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*/\nfunction identity(input) {\n return input;\n}\n\n/**\n * Fill in an array with a string.\n * @param {String} str the string to use.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to fill in (will be mutated).\n * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated array.\n */\nfunction stringToArrayLike(str, array) {\n for (var i = 0; i < str.length; ++i) {\n array[i] = str.charCodeAt(i) & 0xFF;\n }\n return array;\n}\n\n/**\n * Transform an array-like object to a string.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.\n * @return {String} the result.\n */\nfunction arrayLikeToString(array) {\n // Performances notes :\n // --------------------\n // String.fromCharCode.apply(null, array) is the fastest, see\n // see http://jsperf.com/converting-a-uint8array-to-a-string/2\n // but the stack is limited (and we can get huge arrays !).\n //\n // result += String.fromCharCode(array[i]); generate too many strings !\n //\n // This code is inspired by http://jsperf.com/arraybuffer-to-string-apply-performance/2\n var chunk = 65536;\n var result = [],\n len = array.length,\n type = exports.getTypeOf(array),\n k = 0,\n canUseApply = true;\n try {\n switch(type) {\n case \"uint8array\":\n String.fromCharCode.apply(null, new Uint8Array(0));\n break;\n case \"nodebuffer\":\n String.fromCharCode.apply(null, nodeBuffer(0));\n break;\n }\n } catch(e) {\n canUseApply = false;\n }\n\n // no apply : slow and painful algorithm\n // default browser on android 4.*\n if (!canUseApply) {\n var resultStr = \"\";\n for(var i = 0; i < array.length;i++) {\n resultStr += String.fromCharCode(array[i]);\n }\n return resultStr;\n }\n while (k < len && chunk > 1) {\n try {\n if (type === \"array\" || type === \"nodebuffer\") {\n result.push(String.fromCharCode.apply(null, array.slice(k, Math.min(k + chunk, len))));\n }\n else {\n result.push(String.fromCharCode.apply(null, array.subarray(k, Math.min(k + chunk, len))));\n }\n k += chunk;\n }\n catch (e) {\n chunk = Math.floor(chunk / 2);\n }\n }\n return result.join(\"\");\n}\n\nexports.applyFromCharCode = arrayLikeToString;\n\n\n/**\n * Copy the data from an array-like to an other array-like.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayFrom the origin array.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayTo the destination array which will be mutated.\n * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated destination array.\n */\nfunction arrayLikeToArrayLike(arrayFrom, arrayTo) {\n for (var i = 0; i < arrayFrom.length; i++) {\n arrayTo[i] = arrayFrom[i];\n }\n return arrayTo;\n}\n\n// a matrix containing functions to transform everything into everything.\nvar transform = {};\n\n// string to ?\ntransform[\"string\"] = {\n \"string\": identity,\n \"array\": function(input) {\n return stringToArrayLike(input, new Array(input.length));\n },\n \"arraybuffer\": function(input) {\n return transform[\"string\"][\"uint8array\"](input).buffer;\n },\n \"uint8array\": function(input) {\n return stringToArrayLike(input, new Uint8Array(input.length));\n },\n \"nodebuffer\": function(input) {\n return stringToArrayLike(input, nodeBuffer(input.length));\n }\n};\n\n// array to ?\ntransform[\"array\"] = {\n \"string\": arrayLikeToString,\n \"array\": identity,\n \"arraybuffer\": function(input) {\n return (new Uint8Array(input)).buffer;\n },\n \"uint8array\": function(input) {\n return new Uint8Array(input);\n },\n \"nodebuffer\": function(input) {\n return nodeBuffer(input);\n }\n};\n\n// arraybuffer to ?\ntransform[\"arraybuffer\"] = {\n \"string\": function(input) {\n return arrayLikeToString(new Uint8Array(input));\n },\n \"array\": function(input) {\n return arrayLikeToArrayLike(new Uint8Array(input), new Array(input.byteLength));\n },\n \"arraybuffer\": identity,\n \"uint8array\": function(input) {\n return new Uint8Array(input);\n },\n \"nodebuffer\": function(input) {\n return nodeBuffer(new Uint8Array(input));\n }\n};\n\n// uint8array to ?\ntransform[\"uint8array\"] = {\n \"string\": arrayLikeToString,\n \"array\": function(input) {\n return arrayLikeToArrayLike(input, new Array(input.length));\n },\n \"arraybuffer\": function(input) {\n return input.buffer;\n },\n \"uint8array\": identity,\n \"nodebuffer\": function(input) {\n return nodeBuffer(input);\n }\n};\n\n// nodebuffer to ?\ntransform[\"nodebuffer\"] = {\n \"string\": arrayLikeToString,\n \"array\": function(input) {\n return arrayLikeToArrayLike(input, new Array(input.length));\n },\n \"arraybuffer\": function(input) {\n return transform[\"nodebuffer\"][\"uint8array\"](input).buffer;\n },\n \"uint8array\": function(input) {\n return arrayLikeToArrayLike(input, new Uint8Array(input.length));\n },\n \"nodebuffer\": identity\n};\n\n/**\n * Transform an input into any type.\n * The supported output type are : string, array, uint8array, arraybuffer, nodebuffer.\n * If no output type is specified, the unmodified input will be returned.\n * @param {String} outputType the output type.\n * @param {String|Array|ArrayBuffer|Uint8Array|Buffer} input the input to convert.\n * @throws {Error} an Error if the browser doesn't support the requested output type.\n */\nexports.transformTo = function(outputType, input) {\n if (!input) {\n // undefined, null, etc\n // an empty string won't harm.\n input = \"\";\n }\n if (!outputType) {\n return input;\n }\n exports.checkSupport(outputType);\n var inputType = exports.getTypeOf(input);\n var result = transform[inputType][outputType](input);\n return result;\n};\n\n/**\n * Return the type of the input.\n * The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.\n * @param {Object} input the input to identify.\n * @return {String} the (lowercase) type of the input.\n */\nexports.getTypeOf = function(input) {\n if (typeof input === \"string\") {\n return \"string\";\n }\n if (Object.prototype.toString.call(input) === \"[object Array]\") {\n return \"array\";\n }\n if (support.nodebuffer && nodeBuffer.test(input)) {\n return \"nodebuffer\";\n }\n if (support.uint8array && input instanceof Uint8Array) {\n return \"uint8array\";\n }\n if (support.arraybuffer && input instanceof ArrayBuffer) {\n return \"arraybuffer\";\n }\n};\n\n/**\n * Throw an exception if the type is not supported.\n * @param {String} type the type to check.\n * @throws {Error} an Error if the browser doesn't support the requested type.\n */\nexports.checkSupport = function(type) {\n var supported = support[type.toLowerCase()];\n if (!supported) {\n throw new Error(type + \" is not supported by this browser\");\n }\n};\nexports.MAX_VALUE_16BITS = 65535;\nexports.MAX_VALUE_32BITS = -1; // well, \"\\xFF\\xFF\\xFF\\xFF\\xFF\\xFF\\xFF\\xFF\" is parsed as -1\n\n/**\n * Prettify a string read as binary.\n * @param {string} str the string to prettify.\n * @return {string} a pretty string.\n */\nexports.pretty = function(str) {\n var res = '',\n code, i;\n for (i = 0; i < (str || \"\").length; i++) {\n code = str.charCodeAt(i);\n res += '\\\\x' + (code < 16 ? \"0\" : \"\") + code.toString(16).toUpperCase();\n }\n return res;\n};\n\n/**\n * Find a compression registered in JSZip.\n * @param {string} compressionMethod the method magic to find.\n * @return {Object|null} the JSZip compression object, null if none found.\n */\nexports.findCompression = function(compressionMethod) {\n for (var method in compressions) {\n if (!compressions.hasOwnProperty(method)) {\n continue;\n }\n if (compressions[method].magic === compressionMethod) {\n return compressions[method];\n }\n }\n return null;\n};\n/**\n* Cross-window, cross-Node-context regular expression detection\n* @param {Object} object Anything\n* @return {Boolean} true if the object is a regular expression,\n* false otherwise\n*/\nexports.isRegExp = function (object) {\n return Object.prototype.toString.call(object) === \"[object RegExp]\";\n};\n\n/**\n * Merge the objects passed as parameters into a new one.\n * @private\n * @param {...Object} var_args All objects to merge.\n * @return {Object} a new object with the data of the others.\n */\nexports.extend = function() {\n var result = {}, i, attr;\n for (i = 0; i < arguments.length; i++) { // arguments is not enumerable in some browsers\n for (attr in arguments[i]) {\n if (arguments[i].hasOwnProperty(attr) && typeof result[attr] === \"undefined\") {\n result[attr] = arguments[i][attr];\n }\n }\n }\n return result;\n};\n\n","'use strict';\n\n\nvar TYPED_OK = (typeof Uint8Array !== 'undefined') &&\n (typeof Uint16Array !== 'undefined') &&\n (typeof Int32Array !== 'undefined');\n\nfunction _has(obj, key) {\n return Object.prototype.hasOwnProperty.call(obj, key);\n}\n\nexports.assign = function (obj /*from1, from2, from3, ...*/) {\n var sources = Array.prototype.slice.call(arguments, 1);\n while (sources.length) {\n var source = sources.shift();\n if (!source) { continue; }\n\n if (typeof source !== 'object') {\n throw new TypeError(source + 'must be non-object');\n }\n\n for (var p in source) {\n if (_has(source, p)) {\n obj[p] = source[p];\n }\n }\n }\n\n return obj;\n};\n\n\n// reduce buffer size, avoiding mem copy\nexports.shrinkBuf = function (buf, size) {\n if (buf.length === size) { return buf; }\n if (buf.subarray) { return buf.subarray(0, size); }\n buf.length = size;\n return buf;\n};\n\n\nvar fnTyped = {\n arraySet: function (dest, src, src_offs, len, dest_offs) {\n if (src.subarray && dest.subarray) {\n dest.set(src.subarray(src_offs, src_offs + len), dest_offs);\n return;\n }\n // Fallback to ordinary array\n for (var i = 0; i < len; i++) {\n dest[dest_offs + i] = src[src_offs + i];\n }\n },\n // Join array of chunks to single array.\n flattenChunks: function (chunks) {\n var i, l, len, pos, chunk, result;\n\n // calculate data length\n len = 0;\n for (i = 0, l = chunks.length; i < l; i++) {\n len += chunks[i].length;\n }\n\n // join chunks\n result = new Uint8Array(len);\n pos = 0;\n for (i = 0, l = chunks.length; i < l; i++) {\n chunk = chunks[i];\n result.set(chunk, pos);\n pos += chunk.length;\n }\n\n return result;\n }\n};\n\nvar fnUntyped = {\n arraySet: function (dest, src, src_offs, len, dest_offs) {\n for (var i = 0; i < len; i++) {\n dest[dest_offs + i] = src[src_offs + i];\n }\n },\n // Join array of chunks to single array.\n flattenChunks: function (chunks) {\n return [].concat.apply([], chunks);\n }\n};\n\n\n// Enable/Disable typed arrays use, for testing\n//\nexports.setTyped = function (on) {\n if (on) {\n exports.Buf8 = Uint8Array;\n exports.Buf16 = Uint16Array;\n exports.Buf32 = Int32Array;\n exports.assign(exports, fnTyped);\n } else {\n exports.Buf8 = Array;\n exports.Buf16 = Array;\n exports.Buf32 = Array;\n exports.assign(exports, fnUntyped);\n }\n};\n\nexports.setTyped(TYPED_OK);\n","'use strict';\nexports.base64 = true;\nexports.array = true;\nexports.string = true;\nexports.arraybuffer = typeof ArrayBuffer !== \"undefined\" && typeof Uint8Array !== \"undefined\";\n// contains true if JSZip can read/generate nodejs Buffer, false otherwise.\n// Browserify will provide a Buffer implementation for browsers, which is\n// an augmented Uint8Array (i.e., can be used as either Buffer or U8).\nexports.nodebuffer = typeof Buffer !== \"undefined\";\n// contains true if JSZip can read/generate Uint8Array, false otherwise.\nexports.uint8array = typeof Uint8Array !== \"undefined\";\n\nif (typeof ArrayBuffer === \"undefined\") {\n exports.blob = false;\n}\nelse {\n var buffer = new ArrayBuffer(0);\n try {\n exports.blob = new Blob([buffer], {\n type: \"application/zip\"\n }).size === 0;\n }\n catch (e) {\n try {\n var Builder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder || window.MSBlobBuilder;\n var builder = new Builder();\n builder.append(buffer);\n exports.blob = builder.getBlob('application/zip').size === 0;\n }\n catch (e) {\n exports.blob = false;\n }\n }\n}\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author Feross Aboukhadijeh <http://feross.org>\n * @license MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n * === true Use Uint8Array implementation (fastest)\n * === false Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n * - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n * See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n * - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n * - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n * incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n ? global.TYPED_ARRAY_SUPPORT\n : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n try {\n var arr = new Uint8Array(1)\n arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n return arr.foo() === 42 && // typed array instances can be augmented\n typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n } catch (e) {\n return false\n }\n}\n\nfunction kMaxLength () {\n return Buffer.TYPED_ARRAY_SUPPORT\n ? 0x7fffffff\n : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n if (kMaxLength() < length) {\n throw new RangeError('Invalid typed array length')\n }\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n // Return an augmented `Uint8Array` instance, for best performance\n that = new Uint8Array(length)\n that.__proto__ = Buffer.prototype\n } else {\n // Fallback: Return an object instance of the Buffer class\n if (that === null) {\n that = new Buffer(length)\n }\n that.length = length\n }\n\n return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n return new Buffer(arg, encodingOrOffset, length)\n }\n\n // Common case.\n if (typeof arg === 'number') {\n if (typeof encodingOrOffset === 'string') {\n throw new Error(\n 'If encoding is specified then the first argument must be a string'\n )\n }\n return allocUnsafe(this, arg)\n }\n return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n arr.__proto__ = Buffer.prototype\n return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n if (typeof value === 'number') {\n throw new TypeError('\"value\" argument must not be a number')\n }\n\n if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n return fromArrayBuffer(that, value, encodingOrOffset, length)\n }\n\n if (typeof value === 'string') {\n return fromString(that, value, encodingOrOffset)\n }\n\n return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n Buffer.prototype.__proto__ = Uint8Array.prototype\n Buffer.__proto__ = Uint8Array\n if (typeof Symbol !== 'undefined' && Symbol.species &&\n Buffer[Symbol.species] === Buffer) {\n // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n Object.defineProperty(Buffer, Symbol.species, {\n value: null,\n configurable: true\n })\n }\n}\n\nfunction assertSize (size) {\n if (typeof size !== 'number') {\n throw new TypeError('\"size\" argument must be a number')\n } else if (size < 0) {\n throw new RangeError('\"size\" argument must not be negative')\n }\n}\n\nfunction alloc (that, size, fill, encoding) {\n assertSize(size)\n if (size <= 0) {\n return createBuffer(that, size)\n }\n if (fill !== undefined) {\n // Only pay attention to encoding if it's a string. This\n // prevents accidentally sending in a number that would\n // be interpretted as a start offset.\n return typeof encoding === 'string'\n ? createBuffer(that, size).fill(fill, encoding)\n : createBuffer(that, size).fill(fill)\n }\n return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n assertSize(size)\n that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n if (!Buffer.TYPED_ARRAY_SUPPORT) {\n for (var i = 0; i < size; ++i) {\n that[i] = 0\n }\n }\n return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n if (typeof encoding !== 'string' || encoding === '') {\n encoding = 'utf8'\n }\n\n if (!Buffer.isEncoding(encoding)) {\n throw new TypeError('\"encoding\" must be a valid string encoding')\n }\n\n var length = byteLength(string, encoding) | 0\n that = createBuffer(that, length)\n\n var actual = that.write(string, encoding)\n\n if (actual !== length) {\n // Writing a hex string, for example, that contains invalid characters will\n // cause everything after the first invalid character to be ignored. (e.g.\n // 'abxxcd' will be treated as 'ab')\n that = that.slice(0, actual)\n }\n\n return that\n}\n\nfunction fromArrayLike (that, array) {\n var length = array.length < 0 ? 0 : checked(array.length) | 0\n that = createBuffer(that, length)\n for (var i = 0; i < length; i += 1) {\n that[i] = array[i] & 255\n }\n return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n if (byteOffset < 0 || array.byteLength < byteOffset) {\n throw new RangeError('\\'offset\\' is out of bounds')\n }\n\n if (array.byteLength < byteOffset + (length || 0)) {\n throw new RangeError('\\'length\\' is out of bounds')\n }\n\n if (byteOffset === undefined && length === undefined) {\n array = new Uint8Array(array)\n } else if (length === undefined) {\n array = new Uint8Array(array, byteOffset)\n } else {\n array = new Uint8Array(array, byteOffset, length)\n }\n\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n // Return an augmented `Uint8Array` instance, for best performance\n that = array\n that.__proto__ = Buffer.prototype\n } else {\n // Fallback: Return an object instance of the Buffer class\n that = fromArrayLike(that, array)\n }\n return that\n}\n\nfunction fromObject (that, obj) {\n if (Buffer.isBuffer(obj)) {\n var len = checked(obj.length) | 0\n that = createBuffer(that, len)\n\n if (that.length === 0) {\n return that\n }\n\n obj.copy(that, 0, 0, len)\n return that\n }\n\n if (obj) {\n if ((typeof ArrayBuffer !== 'undefined' &&\n obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n if (typeof obj.length !== 'number' || isnan(obj.length)) {\n return createBuffer(that, 0)\n }\n return fromArrayLike(that, obj)\n }\n\n if (obj.type === 'Buffer' && isArray(obj.data)) {\n return fromArrayLike(that, obj.data)\n }\n }\n\n throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n // Note: cannot use `length < kMaxLength()` here because that fails when\n // length is NaN (which is otherwise coerced to zero.)\n if (length >= kMaxLength()) {\n throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n 'size: 0x' + kMaxLength().toString(16) + ' bytes')\n }\n return length | 0\n}\n\nfunction SlowBuffer (length) {\n if (+length != length) { // eslint-disable-line eqeqeq\n length = 0\n }\n return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n throw new TypeError('Arguments must be Buffers')\n }\n\n if (a === b) return 0\n\n var x = a.length\n var y = b.length\n\n for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n if (a[i] !== b[i]) {\n x = a[i]\n y = b[i]\n break\n }\n }\n\n if (x < y) return -1\n if (y < x) return 1\n return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n switch (String(encoding).toLowerCase()) {\n case 'hex':\n case 'utf8':\n case 'utf-8':\n case 'ascii':\n case 'latin1':\n case 'binary':\n case 'base64':\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return true\n default:\n return false\n }\n}\n\nBuffer.concat = function concat (list, length) {\n if (!isArray(list)) {\n throw new TypeError('\"list\" argument must be an Array of Buffers')\n }\n\n if (list.length === 0) {\n return Buffer.alloc(0)\n }\n\n var i\n if (length === undefined) {\n length = 0\n for (i = 0; i < list.length; ++i) {\n length += list[i].length\n }\n }\n\n var buffer = Buffer.allocUnsafe(length)\n var pos = 0\n for (i = 0; i < list.length; ++i) {\n var buf = list[i]\n if (!Buffer.isBuffer(buf)) {\n throw new TypeError('\"list\" argument must be an Array of Buffers')\n }\n buf.copy(buffer, pos)\n pos += buf.length\n }\n return buffer\n}\n\nfunction byteLength (string, encoding) {\n if (Buffer.isBuffer(string)) {\n return string.length\n }\n if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n return string.byteLength\n }\n if (typeof string !== 'string') {\n string = '' + string\n }\n\n var len = string.length\n if (len === 0) return 0\n\n // Use a for loop to avoid recursion\n var loweredCase = false\n for (;;) {\n switch (encoding) {\n case 'ascii':\n case 'latin1':\n case 'binary':\n return len\n case 'utf8':\n case 'utf-8':\n case undefined:\n return utf8ToBytes(string).length\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return len * 2\n case 'hex':\n return len >>> 1\n case 'base64':\n return base64ToBytes(string).length\n default:\n if (loweredCase) return utf8ToBytes(string).length // assume utf8\n encoding = ('' + encoding).toLowerCase()\n loweredCase = true\n }\n }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n var loweredCase = false\n\n // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n // property of a typed array.\n\n // This behaves neither like String nor Uint8Array in that we set start/end\n // to their upper/lower bounds if the value passed is out of range.\n // undefined is handled specially as per ECMA-262 6th Edition,\n // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n if (start === undefined || start < 0) {\n start = 0\n }\n // Return early if start > this.length. Done here to prevent potential uint32\n // coercion fail below.\n if (start > this.length) {\n return ''\n }\n\n if (end === undefined || end > this.length) {\n end = this.length\n }\n\n if (end <= 0) {\n return ''\n }\n\n // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n end >>>= 0\n start >>>= 0\n\n if (end <= start) {\n return ''\n }\n\n if (!encoding) encoding = 'utf8'\n\n while (true) {\n switch (encoding) {\n case 'hex':\n return hexSlice(this, start, end)\n\n case 'utf8':\n case 'utf-8':\n return utf8Slice(this, start, end)\n\n case 'ascii':\n return asciiSlice(this, start, end)\n\n case 'latin1':\n case 'binary':\n return latin1Slice(this, start, end)\n\n case 'base64':\n return base64Slice(this, start, end)\n\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return utf16leSlice(this, start, end)\n\n default:\n if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n encoding = (encoding + '').toLowerCase()\n loweredCase = true\n }\n }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n var i = b[n]\n b[n] = b[m]\n b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n var len = this.length\n if (len % 2 !== 0) {\n throw new RangeError('Buffer size must be a multiple of 16-bits')\n }\n for (var i = 0; i < len; i += 2) {\n swap(this, i, i + 1)\n }\n return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n var len = this.length\n if (len % 4 !== 0) {\n throw new RangeError('Buffer size must be a multiple of 32-bits')\n }\n for (var i = 0; i < len; i += 4) {\n swap(this, i, i + 3)\n swap(this, i + 1, i + 2)\n }\n return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n var len = this.length\n if (len % 8 !== 0) {\n throw new RangeError('Buffer size must be a multiple of 64-bits')\n }\n for (var i = 0; i < len; i += 8) {\n swap(this, i, i + 7)\n swap(this, i + 1, i + 6)\n swap(this, i + 2, i + 5)\n swap(this, i + 3, i + 4)\n }\n return this\n}\n\nBuffer.prototype.toString = function toString () {\n var length = this.length | 0\n if (length === 0) return ''\n if (arguments.length === 0) return utf8Slice(this, 0, length)\n return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n if (this === b) return true\n return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n var str = ''\n var max = exports.INSPECT_MAX_BYTES\n if (this.length > 0) {\n str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n if (this.length > max) str += ' ... '\n }\n return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n if (!Buffer.isBuffer(target)) {\n throw new TypeError('Argument must be a Buffer')\n }\n\n if (start === undefined) {\n start = 0\n }\n if (end === undefined) {\n end = target ? target.length : 0\n }\n if (thisStart === undefined) {\n thisStart = 0\n }\n if (thisEnd === undefined) {\n thisEnd = this.length\n }\n\n if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n throw new RangeError('out of range index')\n }\n\n if (thisStart >= thisEnd && start >= end) {\n return 0\n }\n if (thisStart >= thisEnd) {\n return -1\n }\n if (start >= end) {\n return 1\n }\n\n start >>>= 0\n end >>>= 0\n thisStart >>>= 0\n thisEnd >>>= 0\n\n if (this === target) return 0\n\n var x = thisEnd - thisStart\n var y = end - start\n var len = Math.min(x, y)\n\n var thisCopy = this.slice(thisStart, thisEnd)\n var targetCopy = target.slice(start, end)\n\n for (var i = 0; i < len; ++i) {\n if (thisCopy[i] !== targetCopy[i]) {\n x = thisCopy[i]\n y = targetCopy[i]\n break\n }\n }\n\n if (x < y) return -1\n if (y < x) return 1\n return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n // Empty buffer means no match\n if (buffer.length === 0) return -1\n\n // Normalize byteOffset\n if (typeof byteOffset === 'string') {\n encoding = byteOffset\n byteOffset = 0\n } else if (byteOffset > 0x7fffffff) {\n byteOffset = 0x7fffffff\n } else if (byteOffset < -0x80000000) {\n byteOffset = -0x80000000\n }\n byteOffset = +byteOffset // Coerce to Number.\n if (isNaN(byteOffset)) {\n // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n byteOffset = dir ? 0 : (buffer.length - 1)\n }\n\n // Normalize byteOffset: negative offsets start from the end of the buffer\n if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n if (byteOffset >= buffer.length) {\n if (dir) return -1\n else byteOffset = buffer.length - 1\n } else if (byteOffset < 0) {\n if (dir) byteOffset = 0\n else return -1\n }\n\n // Normalize val\n if (typeof val === 'string') {\n val = Buffer.from(val, encoding)\n }\n\n // Finally, search either indexOf (if dir is true) or lastIndexOf\n if (Buffer.isBuffer(val)) {\n // Special case: looking for empty string/buffer always fails\n if (val.length === 0) {\n return -1\n }\n return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n } else if (typeof val === 'number') {\n val = val & 0xFF // Search for a byte value [0-255]\n if (Buffer.TYPED_ARRAY_SUPPORT &&\n typeof Uint8Array.prototype.indexOf === 'function') {\n if (dir) {\n return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n } else {\n return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n }\n }\n return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n }\n\n throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n var indexSize = 1\n var arrLength = arr.length\n var valLength = val.length\n\n if (encoding !== undefined) {\n encoding = String(encoding).toLowerCase()\n if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n encoding === 'utf16le' || encoding === 'utf-16le') {\n if (arr.length < 2 || val.length < 2) {\n return -1\n }\n indexSize = 2\n arrLength /= 2\n valLength /= 2\n byteOffset /= 2\n }\n }\n\n function read (buf, i) {\n if (indexSize === 1) {\n return buf[i]\n } else {\n return buf.readUInt16BE(i * indexSize)\n }\n }\n\n var i\n if (dir) {\n var foundIndex = -1\n for (i = byteOffset; i < arrLength; i++) {\n if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n if (foundIndex === -1) foundIndex = i\n if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n } else {\n if (foundIndex !== -1) i -= i - foundIndex\n foundIndex = -1\n }\n }\n } else {\n if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n for (i = byteOffset; i >= 0; i--) {\n var found = true\n for (var j = 0; j < valLength; j++) {\n if (read(arr, i + j) !== read(val, j)) {\n found = false\n break\n }\n }\n if (found) return i\n }\n }\n\n return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n offset = Number(offset) || 0\n var remaining = buf.length - offset\n if (!length) {\n length = remaining\n } else {\n length = Number(length)\n if (length > remaining) {\n length = remaining\n }\n }\n\n // must be an even number of digits\n var strLen = string.length\n if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n if (length > strLen / 2) {\n length = strLen / 2\n }\n for (var i = 0; i < length; ++i) {\n var parsed = parseInt(string.substr(i * 2, 2), 16)\n if (isNaN(parsed)) return i\n buf[offset + i] = parsed\n }\n return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n // Buffer#write(string)\n if (offset === undefined) {\n encoding = 'utf8'\n length = this.length\n offset = 0\n // Buffer#write(string, encoding)\n } else if (length === undefined && typeof offset === 'string') {\n encoding = offset\n length = this.length\n offset = 0\n // Buffer#write(string, offset[, length][, encoding])\n } else if (isFinite(offset)) {\n offset = offset | 0\n if (isFinite(length)) {\n length = length | 0\n if (encoding === undefined) encoding = 'utf8'\n } else {\n encoding = length\n length = undefined\n }\n // legacy write(string, encoding, offset, length) - remove in v0.13\n } else {\n throw new Error(\n 'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n )\n }\n\n var remaining = this.length - offset\n if (length === undefined || length > remaining) length = remaining\n\n if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n throw new RangeError('Attempt to write outside buffer bounds')\n }\n\n if (!encoding) encoding = 'utf8'\n\n var loweredCase = false\n for (;;) {\n switch (encoding) {\n case 'hex':\n return hexWrite(this, string, offset, length)\n\n case 'utf8':\n case 'utf-8':\n return utf8Write(this, string, offset, length)\n\n case 'ascii':\n return asciiWrite(this, string, offset, length)\n\n case 'latin1':\n case 'binary':\n return latin1Write(this, string, offset, length)\n\n case 'base64':\n // Warning: maxLength not taken into account in base64Write\n return base64Write(this, string, offset, length)\n\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return ucs2Write(this, string, offset, length)\n\n default:\n if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n encoding = ('' + encoding).toLowerCase()\n loweredCase = true\n }\n }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n return {\n type: 'Buffer',\n data: Array.prototype.slice.call(this._arr || this, 0)\n }\n}\n\nfunction base64Slice (buf, start, end) {\n if (start === 0 && end === buf.length) {\n return base64.fromByteArray(buf)\n } else {\n return base64.fromByteArray(buf.slice(start, end))\n }\n}\n\nfunction utf8Slice (buf, start, end) {\n end = Math.min(buf.length, end)\n var res = []\n\n var i = start\n while (i < end) {\n var firstByte = buf[i]\n var codePoint = null\n var bytesPerSequence = (firstByte > 0xEF) ? 4\n : (firstByte > 0xDF) ? 3\n : (firstByte > 0xBF) ? 2\n : 1\n\n if (i + bytesPerSequence <= end) {\n var secondByte, thirdByte, fourthByte, tempCodePoint\n\n switch (bytesPerSequence) {\n case 1:\n if (firstByte < 0x80) {\n codePoint = firstByte\n }\n break\n case 2:\n secondByte = buf[i + 1]\n if ((secondByte & 0xC0) === 0x80) {\n tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n if (tempCodePoint > 0x7F) {\n codePoint = tempCodePoint\n }\n }\n break\n case 3:\n secondByte = buf[i + 1]\n thirdByte = buf[i + 2]\n if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n codePoint = tempCodePoint\n }\n }\n break\n case 4:\n secondByte = buf[i + 1]\n thirdByte = buf[i + 2]\n fourthByte = buf[i + 3]\n if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n codePoint = tempCodePoint\n }\n }\n }\n }\n\n if (codePoint === null) {\n // we did not generate a valid codePoint so insert a\n // replacement char (U+FFFD) and advance only 1 byte\n codePoint = 0xFFFD\n bytesPerSequence = 1\n } else if (codePoint > 0xFFFF) {\n // encode to utf16 (surrogate pair dance)\n codePoint -= 0x10000\n res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n codePoint = 0xDC00 | codePoint & 0x3FF\n }\n\n res.push(codePoint)\n i += bytesPerSequence\n }\n\n return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n var len = codePoints.length\n if (len <= MAX_ARGUMENTS_LENGTH) {\n return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n }\n\n // Decode in chunks to avoid \"call stack size exceeded\".\n var res = ''\n var i = 0\n while (i < len) {\n res += String.fromCharCode.apply(\n String,\n codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n )\n }\n return res\n}\n\nfunction asciiSlice (buf, start, end) {\n var ret = ''\n end = Math.min(buf.length, end)\n\n for (var i = start; i < end; ++i) {\n ret += String.fromCharCode(buf[i] & 0x7F)\n }\n return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n var ret = ''\n end = Math.min(buf.length, end)\n\n for (var i = start; i < end; ++i) {\n ret += String.fromCharCode(buf[i])\n }\n return ret\n}\n\nfunction hexSlice (buf, start, end) {\n var len = buf.length\n\n if (!start || start < 0) start = 0\n if (!end || end < 0 || end > len) end = len\n\n var out = ''\n for (var i = start; i < end; ++i) {\n out += toHex(buf[i])\n }\n return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n var bytes = buf.slice(start, end)\n var res = ''\n for (var i = 0; i < bytes.length; i += 2) {\n res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n }\n return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n var len = this.length\n start = ~~start\n end = end === undefined ? len : ~~end\n\n if (start < 0) {\n start += len\n if (start < 0) start = 0\n } else if (start > len) {\n start = len\n }\n\n if (end < 0) {\n end += len\n if (end < 0) end = 0\n } else if (end > len) {\n end = len\n }\n\n if (end < start) end = start\n\n var newBuf\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n newBuf = this.subarray(start, end)\n newBuf.__proto__ = Buffer.prototype\n } else {\n var sliceLen = end - start\n newBuf = new Buffer(sliceLen, undefined)\n for (var i = 0; i < sliceLen; ++i) {\n newBuf[i] = this[i + start]\n }\n }\n\n return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n var val = this[offset]\n var mul = 1\n var i = 0\n while (++i < byteLength && (mul *= 0x100)) {\n val += this[offset + i] * mul\n }\n\n return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) {\n checkOffset(offset, byteLength, this.length)\n }\n\n var val = this[offset + --byteLength]\n var mul = 1\n while (byteLength > 0 && (mul *= 0x100)) {\n val += this[offset + --byteLength] * mul\n }\n\n return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 1, this.length)\n return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return ((this[offset]) |\n (this[offset + 1] << 8) |\n (this[offset + 2] << 16)) +\n (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return (this[offset] * 0x1000000) +\n ((this[offset + 1] << 16) |\n (this[offset + 2] << 8) |\n this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n var val = this[offset]\n var mul = 1\n var i = 0\n while (++i < byteLength && (mul *= 0x100)) {\n val += this[offset + i] * mul\n }\n mul *= 0x80\n\n if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n var i = byteLength\n var mul = 1\n var val = this[offset + --i]\n while (i > 0 && (mul *= 0x100)) {\n val += this[offset + --i] * mul\n }\n mul *= 0x80\n\n if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 1, this.length)\n if (!(this[offset] & 0x80)) return (this[offset])\n return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n var val = this[offset] | (this[offset + 1] << 8)\n return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 2, this.length)\n var val = this[offset + 1] | (this[offset] << 8)\n return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return (this[offset]) |\n (this[offset + 1] << 8) |\n (this[offset + 2] << 16) |\n (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n\n return (this[offset] << 24) |\n (this[offset + 1] << 16) |\n (this[offset + 2] << 8) |\n (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 4, this.length)\n return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 8, this.length)\n return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n if (!noAssert) checkOffset(offset, 8, this.length)\n return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) {\n var maxBytes = Math.pow(2, 8 * byteLength) - 1\n checkInt(this, value, offset, byteLength, maxBytes, 0)\n }\n\n var mul = 1\n var i = 0\n this[offset] = value & 0xFF\n while (++i < byteLength && (mul *= 0x100)) {\n this[offset + i] = (value / mul) & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n byteLength = byteLength | 0\n if (!noAssert) {\n var maxBytes = Math.pow(2, 8 * byteLength) - 1\n checkInt(this, value, offset, byteLength, maxBytes, 0)\n }\n\n var i = byteLength - 1\n var mul = 1\n this[offset + i] = value & 0xFF\n while (--i >= 0 && (mul *= 0x100)) {\n this[offset + i] = (value / mul) & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n this[offset] = (value & 0xff)\n return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n if (value < 0) value = 0xffff + value + 1\n for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n (littleEndian ? i : 1 - i) * 8\n }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value & 0xff)\n this[offset + 1] = (value >>> 8)\n } else {\n objectWriteUInt16(this, value, offset, true)\n }\n return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 8)\n this[offset + 1] = (value & 0xff)\n } else {\n objectWriteUInt16(this, value, offset, false)\n }\n return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n if (value < 0) value = 0xffffffff + value + 1\n for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset + 3] = (value >>> 24)\n this[offset + 2] = (value >>> 16)\n this[offset + 1] = (value >>> 8)\n this[offset] = (value & 0xff)\n } else {\n objectWriteUInt32(this, value, offset, true)\n }\n return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 24)\n this[offset + 1] = (value >>> 16)\n this[offset + 2] = (value >>> 8)\n this[offset + 3] = (value & 0xff)\n } else {\n objectWriteUInt32(this, value, offset, false)\n }\n return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) {\n var limit = Math.pow(2, 8 * byteLength - 1)\n\n checkInt(this, value, offset, byteLength, limit - 1, -limit)\n }\n\n var i = 0\n var mul = 1\n var sub = 0\n this[offset] = value & 0xFF\n while (++i < byteLength && (mul *= 0x100)) {\n if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n sub = 1\n }\n this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) {\n var limit = Math.pow(2, 8 * byteLength - 1)\n\n checkInt(this, value, offset, byteLength, limit - 1, -limit)\n }\n\n var i = byteLength - 1\n var mul = 1\n var sub = 0\n this[offset + i] = value & 0xFF\n while (--i >= 0 && (mul *= 0x100)) {\n if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n sub = 1\n }\n this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n }\n\n return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n if (value < 0) value = 0xff + value + 1\n this[offset] = (value & 0xff)\n return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value & 0xff)\n this[offset + 1] = (value >>> 8)\n } else {\n objectWriteUInt16(this, value, offset, true)\n }\n return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 8)\n this[offset + 1] = (value & 0xff)\n } else {\n objectWriteUInt16(this, value, offset, false)\n }\n return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value & 0xff)\n this[offset + 1] = (value >>> 8)\n this[offset + 2] = (value >>> 16)\n this[offset + 3] = (value >>> 24)\n } else {\n objectWriteUInt32(this, value, offset, true)\n }\n return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n value = +value\n offset = offset | 0\n if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n if (value < 0) value = 0xffffffff + value + 1\n if (Buffer.TYPED_ARRAY_SUPPORT) {\n this[offset] = (value >>> 24)\n this[offset + 1] = (value >>> 16)\n this[offset + 2] = (value >>> 8)\n this[offset + 3] = (value & 0xff)\n } else {\n objectWriteUInt32(this, value, offset, false)\n }\n return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n if (offset + ext > buf.length) throw new RangeError('Index out of range')\n if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n if (!noAssert) {\n checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n }\n ieee754.write(buf, value, offset, littleEndian, 23, 4)\n return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n if (!noAssert) {\n checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n }\n ieee754.write(buf, value, offset, littleEndian, 52, 8)\n return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n if (!start) start = 0\n if (!end && end !== 0) end = this.length\n if (targetStart >= target.length) targetStart = target.length\n if (!targetStart) targetStart = 0\n if (end > 0 && end < start) end = start\n\n // Copy 0 bytes; we're done\n if (end === start) return 0\n if (target.length === 0 || this.length === 0) return 0\n\n // Fatal error conditions\n if (targetStart < 0) {\n throw new RangeError('targetStart out of bounds')\n }\n if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n // Are we oob?\n if (end > this.length) end = this.length\n if (target.length - targetStart < end - start) {\n end = target.length - targetStart + start\n }\n\n var len = end - start\n var i\n\n if (this === target && start < targetStart && targetStart < end) {\n // descending copy from end\n for (i = len - 1; i >= 0; --i) {\n target[i + targetStart] = this[i + start]\n }\n } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n // ascending copy from start\n for (i = 0; i < len; ++i) {\n target[i + targetStart] = this[i + start]\n }\n } else {\n Uint8Array.prototype.set.call(\n target,\n this.subarray(start, start + len),\n targetStart\n )\n }\n\n return len\n}\n\n// Usage:\n// buffer.fill(number[, offset[, end]])\n// buffer.fill(buffer[, offset[, end]])\n// buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n // Handle string cases:\n if (typeof val === 'string') {\n if (typeof start === 'string') {\n encoding = start\n start = 0\n end = this.length\n } else if (typeof end === 'string') {\n encoding = end\n end = this.length\n }\n if (val.length === 1) {\n var code = val.charCodeAt(0)\n if (code < 256) {\n val = code\n }\n }\n if (encoding !== undefined && typeof encoding !== 'string') {\n throw new TypeError('encoding must be a string')\n }\n if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n throw new TypeError('Unknown encoding: ' + encoding)\n }\n } else if (typeof val === 'number') {\n val = val & 255\n }\n\n // Invalid ranges are not set to a default, so can range check early.\n if (start < 0 || this.length < start || this.length < end) {\n throw new RangeError('Out of range index')\n }\n\n if (end <= start) {\n return this\n }\n\n start = start >>> 0\n end = end === undefined ? this.length : end >>> 0\n\n if (!val) val = 0\n\n var i\n if (typeof val === 'number') {\n for (i = start; i < end; ++i) {\n this[i] = val\n }\n } else {\n var bytes = Buffer.isBuffer(val)\n ? val\n : utf8ToBytes(new Buffer(val, encoding).toString())\n var len = bytes.length\n for (i = 0; i < end - start; ++i) {\n this[i + start] = bytes[i % len]\n }\n }\n\n return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n // Node converts strings with length < 2 to ''\n if (str.length < 2) return ''\n // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n while (str.length % 4 !== 0) {\n str = str + '='\n }\n return str\n}\n\nfunction stringtrim (str) {\n if (str.trim) return str.trim()\n return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n if (n < 16) return '0' + n.toString(16)\n return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n units = units || Infinity\n var codePoint\n var length = string.length\n var leadSurrogate = null\n var bytes = []\n\n for (var i = 0; i < length; ++i) {\n codePoint = string.charCodeAt(i)\n\n // is surrogate component\n if (codePoint > 0xD7FF && codePoint < 0xE000) {\n // last char was a lead\n if (!leadSurrogate) {\n // no lead yet\n if (codePoint > 0xDBFF) {\n // unexpected trail\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n continue\n } else if (i + 1 === length) {\n // unpaired lead\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n continue\n }\n\n // valid lead\n leadSurrogate = codePoint\n\n continue\n }\n\n // 2 leads in a row\n if (codePoint < 0xDC00) {\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n leadSurrogate = codePoint\n continue\n }\n\n // valid surrogate pair\n codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n } else if (leadSurrogate) {\n // valid bmp char, but last char was a lead\n if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n }\n\n leadSurrogate = null\n\n // encode utf8\n if (codePoint < 0x80) {\n if ((units -= 1) < 0) break\n bytes.push(codePoint)\n } else if (codePoint < 0x800) {\n if ((units -= 2) < 0) break\n bytes.push(\n codePoint >> 0x6 | 0xC0,\n codePoint & 0x3F | 0x80\n )\n } else if (codePoint < 0x10000) {\n if ((units -= 3) < 0) break\n bytes.push(\n codePoint >> 0xC | 0xE0,\n codePoint >> 0x6 & 0x3F | 0x80,\n codePoint & 0x3F | 0x80\n )\n } else if (codePoint < 0x110000) {\n if ((units -= 4) < 0) break\n bytes.push(\n codePoint >> 0x12 | 0xF0,\n codePoint >> 0xC & 0x3F | 0x80,\n codePoint >> 0x6 & 0x3F | 0x80,\n codePoint & 0x3F | 0x80\n )\n } else {\n throw new Error('Invalid code point')\n }\n }\n\n return bytes\n}\n\nfunction asciiToBytes (str) {\n var byteArray = []\n for (var i = 0; i < str.length; ++i) {\n // Node's code seems to be doing this and not & 0x7F..\n byteArray.push(str.charCodeAt(i) & 0xFF)\n }\n return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n var c, hi, lo\n var byteArray = []\n for (var i = 0; i < str.length; ++i) {\n if ((units -= 2) < 0) break\n\n c = str.charCodeAt(i)\n hi = c >> 8\n lo = c % 256\n byteArray.push(lo)\n byteArray.push(hi)\n }\n\n return byteArray\n}\n\nfunction base64ToBytes (str) {\n return base64.toByteArray(base64clean(str))\n}\n\nfunction blitBuffer (src, dst, offset, length) {\n for (var i = 0; i < length; ++i) {\n if ((i + offset >= dst.length) || (i >= src.length)) break\n dst[i + offset] = src[i]\n }\n return i\n}\n\nfunction isnan (val) {\n return val !== val // eslint-disable-line no-self-compare\n}\n","'use strict';\nvar proj4 = require('proj4');\nif (proj4.default) {\n proj4 = proj4.default;\n}\nvar unzip = require('./unzip');\nvar binaryAjax = require('./binaryajax');\nvar parseShp = require('./parseShp');\nvar parseDbf = require('parsedbf');\nvar Promise = require('lie');\nvar Cache = require('lru-cache');\nvar Buffer = require('buffer').Buffer\nvar cache = new Cache({\n max: 20\n});\n\nfunction toBuffer(b) {\n if (!b) {\n throw new Error('forgot to pass buffer');\n }\n if (Buffer.isBuffer(b)) {\n return b;\n }\n if (b instanceof global.ArrayBuffer) {\n return Buffer.from(b);\n }\n if (b.buffer instanceof global.ArrayBuffer) {\n if (b.BYTES_PER_ELEMENT === 1) {\n return Buffer.from(b);\n }\n return Buffer.from(b.buffer);\n }\n}\n\nfunction shp(base, whiteList) {\n if (typeof base === 'string' && cache.has(base)) {\n return Promise.resolve(cache.get(base));\n }\n return shp.getShapefile(base, whiteList).then(function(resp) {\n if (typeof base === 'string') {\n cache.set(base, resp);\n }\n return resp;\n });\n}\nshp.combine = function(arr) {\n var out = {};\n out.type = 'FeatureCollection';\n out.features = [];\n var i = 0;\n var len = arr[0].length;\n while (i < len) {\n out.features.push({\n 'type': 'Feature',\n 'geometry': arr[0][i],\n 'properties': arr[1][i]\n });\n i++;\n }\n return out;\n};\nshp.parseZip = function(buffer, whiteList) {\n var key;\n buffer = toBuffer(buffer);\n var zip = unzip(buffer);\n var names = [];\n whiteList = whiteList || [];\n for (key in zip) {\n if (key.indexOf('__MACOSX') !== -1) {\n continue;\n }\n if (key.slice(-3).toLowerCase() === 'shp') {\n names.push(key.slice(0, -4));\n zip[key.slice(0, -3) + key.slice(-3).toLowerCase()] = zip[key];\n } else if (key.slice(-3).toLowerCase() === 'prj') {\n zip[key.slice(0, -3) + key.slice(-3).toLowerCase()] = proj4(zip[key]);\n } else if (key.slice(-4).toLowerCase() === 'json' || whiteList.indexOf(key.split('.').pop()) > -1) {\n names.push(key.slice(0, -3) + key.slice(-3).toLowerCase());\n } else if (key.slice(-3).toLowerCase() === 'dbf' || key.slice(-3).toLowerCase() === 'cpg') {\n zip[key.slice(0, -3) + key.slice(-3).toLowerCase()] = zip[key];\n }\n }\n if (!names.length) {\n throw new Error('no layers founds');\n }\n var geojson = names.map(function(name) {\n var parsed, dbf;\n var lastDotIdx = name.lastIndexOf('.');\n if (lastDotIdx > -1 && name.slice(lastDotIdx).indexOf('json') > -1) {\n parsed = JSON.parse(zip[name]);\n parsed.fileName = name.slice(0, lastDotIdx);\n } else if (whiteList.indexOf(name.slice(lastDotIdx + 1)) > -1) {\n parsed = zip[name];\n parsed.fileName = name;\n } else {\n if (zip[name + '.dbf']) {\n dbf = parseDbf(zip[name + '.dbf'], zip[name + '.cpg']);\n }\n parsed = shp.combine([parseShp(zip[name + '.shp'], zip[name + '.prj']), dbf]);\n parsed.fileName = name;\n }\n return parsed;\n });\n if (geojson.length === 1) {\n return geojson[0];\n } else {\n return geojson;\n }\n};\n\nfunction getZip(base, whiteList) {\n return binaryAjax(base).then(function(a) {\n return shp.parseZip(a, whiteList);\n });\n}\nshp.getShapefile = function(base, whiteList) {\n if (typeof base === 'string') {\n if (base.slice(-4).toLowerCase() === '.zip') {\n return getZip(base, whiteList);\n } else {\n return Promise.all([\n Promise.all([\n binaryAjax(base + '.shp'),\n binaryAjax(base + '.prj')\n ]).then(function(args) {\n var prj = false;\n try {\n if (args[1]) {\n prj = proj4(args[1]);\n }\n } catch (e) {\n prj = false;\n }\n return parseShp(args[0], prj);\n }),\n Promise.all([\n binaryAjax(base + '.dbf'),\n binaryAjax(base + '.cpg')\n ]).then(function(args) {\n return parseDbf(args[0], args[1]);\n })\n ]).then(shp.combine);\n }\n } else {\n return new Promise(function(resolve) {\n resolve(shp.parseZip(base));\n });\n }\n};\nshp.parseShp = function(shp, prj) {\n shp = toBuffer(shp);\n if (Buffer.isBuffer(prj)) {\n prj = prj.toString();\n }\n if (typeof prj === 'string') {\n try {\n prj = proj4(prj);\n } catch (e) {\n prj = false;\n }\n }\n return parseShp(shp, prj);\n\n};\nshp.parseDbf = function(dbf, cpg) {\n dbf = toBuffer(dbf);\n return parseDbf(dbf, cpg);\n};\nmodule.exports = shp;\n","var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn this;\n})();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || new Function(\"return this\")();\n} catch (e) {\n\t// This works if the window reference is available\n\tif (typeof window === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n","'use strict';\n// private property\nvar _keyStr = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\";\n\n\n// public method for encoding\nexports.encode = function(input, utf8) {\n var output = \"\";\n var chr1, chr2, chr3, enc1, enc2, enc3, enc4;\n var i = 0;\n\n while (i < input.length) {\n\n chr1 = input.charCodeAt(i++);\n chr2 = input.charCodeAt(i++);\n chr3 = input.charCodeAt(i++);\n\n enc1 = chr1 >> 2;\n enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);\n enc4 = chr3 & 63;\n\n if (isNaN(chr2)) {\n enc3 = enc4 = 64;\n }\n else if (isNaN(chr3)) {\n enc4 = 64;\n }\n\n output = output + _keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4);\n\n }\n\n return output;\n};\n\n// public method for decoding\nexports.decode = function(input, utf8) {\n var output = \"\";\n var chr1, chr2, chr3;\n var enc1, enc2, enc3, enc4;\n var i = 0;\n\n input = input.replace(/[^A-Za-z0-9\\+\\/\\=]/g, \"\");\n\n while (i < input.length) {\n\n enc1 = _keyStr.indexOf(input.charAt(i++));\n enc2 = _keyStr.indexOf(input.charAt(i++));\n enc3 = _keyStr.indexOf(input.charAt(i++));\n enc4 = _keyStr.indexOf(input.charAt(i++));\n\n chr1 = (enc1 << 2) | (enc2 >> 4);\n chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);\n chr3 = ((enc3 & 3) << 6) | enc4;\n\n output = output + String.fromCharCode(chr1);\n\n if (enc3 != 64) {\n output = output + String.fromCharCode(chr2);\n }\n if (enc4 != 64) {\n output = output + String.fromCharCode(chr3);\n }\n\n }\n\n return output;\n\n};\n","'use strict';\nvar support = require('./support');\nvar utils = require('./utils');\nvar crc32 = require('./crc32');\nvar signature = require('./signature');\nvar defaults = require('./defaults');\nvar base64 = require('./base64');\nvar compressions = require('./compressions');\nvar CompressedObject = require('./compressedObject');\nvar nodeBuffer = require('./nodeBuffer');\nvar utf8 = require('./utf8');\nvar StringWriter = require('./stringWriter');\nvar Uint8ArrayWriter = require('./uint8ArrayWriter');\n\n/**\n * Returns the raw data of a ZipObject, decompress the content if necessary.\n * @param {ZipObject} file the file to use.\n * @return {String|ArrayBuffer|Uint8Array|Buffer} the data.\n */\nvar getRawData = function(file) {\n if (file._data instanceof CompressedObject) {\n file._data = file._data.getContent();\n file.options.binary = true;\n file.options.base64 = false;\n\n if (utils.getTypeOf(file._data) === \"uint8array\") {\n var copy = file._data;\n // when reading an arraybuffer, the CompressedObject mechanism will keep it and subarray() a Uint8Array.\n // if we request a file in the same format, we might get the same Uint8Array or its ArrayBuffer (the original zip file).\n file._data = new Uint8Array(copy.length);\n // with an empty Uint8Array, Opera fails with a \"Offset larger than array size\"\n if (copy.length !== 0) {\n file._data.set(copy, 0);\n }\n }\n }\n return file._data;\n};\n\n/**\n * Returns the data of a ZipObject in a binary form. If the content is an unicode string, encode it.\n * @param {ZipObject} file the file to use.\n * @return {String|ArrayBuffer|Uint8Array|Buffer} the data.\n */\nvar getBinaryData = function(file) {\n var result = getRawData(file),\n type = utils.getTypeOf(result);\n if (type === \"string\") {\n if (!file.options.binary) {\n // unicode text !\n // unicode string => binary string is a painful process, check if we can avoid it.\n if (support.nodebuffer) {\n return nodeBuffer(result, \"utf-8\");\n }\n }\n return file.asBinary();\n }\n return result;\n};\n\n/**\n * Transform this._data into a string.\n * @param {function} filter a function String -> String, applied if not null on the result.\n * @return {String} the string representing this._data.\n */\nvar dataToString = function(asUTF8) {\n var result = getRawData(this);\n if (result === null || typeof result === \"undefined\") {\n return \"\";\n }\n // if the data is a base64 string, we decode it before checking the encoding !\n if (this.options.base64) {\n result = base64.decode(result);\n }\n if (asUTF8 && this.options.binary) {\n // JSZip.prototype.utf8decode supports arrays as input\n // skip to array => string step, utf8decode will do it.\n result = out.utf8decode(result);\n }\n else {\n // no utf8 transformation, do the array => string step.\n result = utils.transformTo(\"string\", result);\n }\n\n if (!asUTF8 && !this.options.binary) {\n result = utils.transformTo(\"string\", out.utf8encode(result));\n }\n return result;\n};\n/**\n * A simple object representing a file in the zip file.\n * @constructor\n * @param {string} name the name of the file\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data\n * @param {Object} options the options of the file\n */\nvar ZipObject = function(name, data, options) {\n this.name = name;\n this.dir = options.dir;\n this.date = options.date;\n this.comment = options.comment;\n this.unixPermissions = options.unixPermissions;\n this.dosPermissions = options.dosPermissions;\n\n this._data = data;\n this.options = options;\n\n /*\n * This object contains initial values for dir and date.\n * With them, we can check if the user changed the deprecated metadata in\n * `ZipObject#options` or not.\n */\n this._initialMetadata = {\n dir : options.dir,\n date : options.date\n };\n};\n\nZipObject.prototype = {\n /**\n * Return the content as UTF8 string.\n * @return {string} the UTF8 string.\n */\n asText: function() {\n return dataToString.call(this, true);\n },\n /**\n * Returns the binary content.\n * @return {string} the content as binary.\n */\n asBinary: function() {\n return dataToString.call(this, false);\n },\n /**\n * Returns the content as a nodejs Buffer.\n * @return {Buffer} the content as a Buffer.\n */\n asNodeBuffer: function() {\n var result = getBinaryData(this);\n return utils.transformTo(\"nodebuffer\", result);\n },\n /**\n * Returns the content as an Uint8Array.\n * @return {Uint8Array} the content as an Uint8Array.\n */\n asUint8Array: function() {\n var result = getBinaryData(this);\n return utils.transformTo(\"uint8array\", result);\n },\n /**\n * Returns the content as an ArrayBuffer.\n * @return {ArrayBuffer} the content as an ArrayBufer.\n */\n asArrayBuffer: function() {\n return this.asUint8Array().buffer;\n }\n};\n\n/**\n * Transform an integer into a string in hexadecimal.\n * @private\n * @param {number} dec the number to convert.\n * @param {number} bytes the number of bytes to generate.\n * @returns {string} the result.\n */\nvar decToHex = function(dec, bytes) {\n var hex = \"\",\n i;\n for (i = 0; i < bytes; i++) {\n hex += String.fromCharCode(dec & 0xff);\n dec = dec >>> 8;\n }\n return hex;\n};\n\n/**\n * Transforms the (incomplete) options from the user into the complete\n * set of options to create a file.\n * @private\n * @param {Object} o the options from the user.\n * @return {Object} the complete set of options.\n */\nvar prepareFileAttrs = function(o) {\n o = o || {};\n if (o.base64 === true && (o.binary === null || o.binary === undefined)) {\n o.binary = true;\n }\n o = utils.extend(o, defaults);\n o.date = o.date || new Date();\n if (o.compression !== null) o.compression = o.compression.toUpperCase();\n\n return o;\n};\n\n/**\n * Add a file in the current folder.\n * @private\n * @param {string} name the name of the file\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data of the file\n * @param {Object} o the options of the file\n * @return {Object} the new file.\n */\nvar fileAdd = function(name, data, o) {\n // be sure sub folders exist\n var dataType = utils.getTypeOf(data),\n parent;\n\n o = prepareFileAttrs(o);\n\n if (typeof o.unixPermissions === \"string\") {\n o.unixPermissions = parseInt(o.unixPermissions, 8);\n }\n\n // UNX_IFDIR 0040000 see zipinfo.c\n if (o.unixPermissions && (o.unixPermissions & 0x4000)) {\n o.dir = true;\n }\n // Bit 4 Directory\n if (o.dosPermissions && (o.dosPermissions & 0x0010)) {\n o.dir = true;\n }\n\n if (o.dir) {\n name = forceTrailingSlash(name);\n }\n\n if (o.createFolders && (parent = parentFolder(name))) {\n folderAdd.call(this, parent, true);\n }\n\n if (o.dir || data === null || typeof data === \"undefined\") {\n o.base64 = false;\n o.binary = false;\n data = null;\n dataType = null;\n }\n else if (dataType === \"string\") {\n if (o.binary && !o.base64) {\n // optimizedBinaryString == true means that the file has already been filtered with a 0xFF mask\n if (o.optimizedBinaryString !== true) {\n // this is a string, not in a base64 format.\n // Be sure that this is a correct \"binary string\"\n data = utils.string2binary(data);\n }\n }\n }\n else { // arraybuffer, uint8array, ...\n o.base64 = false;\n o.binary = true;\n\n if (!dataType && !(data instanceof CompressedObject)) {\n throw new Error(\"The data of '\" + name + \"' is in an unsupported format !\");\n }\n\n // special case : it's way easier to work with Uint8Array than with ArrayBuffer\n if (dataType === \"arraybuffer\") {\n data = utils.transformTo(\"uint8array\", data);\n }\n }\n\n var object = new ZipObject(name, data, o);\n this.files[name] = object;\n return object;\n};\n\n/**\n * Find the parent folder of the path.\n * @private\n * @param {string} path the path to use\n * @return {string} the parent folder, or \"\"\n */\nvar parentFolder = function (path) {\n if (path.slice(-1) == '/') {\n path = path.substring(0, path.length - 1);\n }\n var lastSlash = path.lastIndexOf('/');\n return (lastSlash > 0) ? path.substring(0, lastSlash) : \"\";\n};\n\n\n/**\n * Returns the path with a slash at the end.\n * @private\n * @param {String} path the path to check.\n * @return {String} the path with a trailing slash.\n */\nvar forceTrailingSlash = function(path) {\n // Check the name ends with a /\n if (path.slice(-1) != \"/\") {\n path += \"/\"; // IE doesn't like substr(-1)\n }\n return path;\n};\n/**\n * Add a (sub) folder in the current folder.\n * @private\n * @param {string} name the folder's name\n * @param {boolean=} [createFolders] If true, automatically create sub\n * folders. Defaults to false.\n * @return {Object} the new folder.\n */\nvar folderAdd = function(name, createFolders) {\n createFolders = (typeof createFolders !== 'undefined') ? createFolders : false;\n\n name = forceTrailingSlash(name);\n\n // Does this folder already exist?\n if (!this.files[name]) {\n fileAdd.call(this, name, null, {\n dir: true,\n createFolders: createFolders\n });\n }\n return this.files[name];\n};\n\n/**\n * Generate a JSZip.CompressedObject for a given zipOject.\n * @param {ZipObject} file the object to read.\n * @param {JSZip.compression} compression the compression to use.\n * @param {Object} compressionOptions the options to use when compressing.\n * @return {JSZip.CompressedObject} the compressed result.\n */\nvar generateCompressedObjectFrom = function(file, compression, compressionOptions) {\n var result = new CompressedObject(),\n content;\n\n // the data has not been decompressed, we might reuse things !\n if (file._data instanceof CompressedObject) {\n result.uncompressedSize = file._data.uncompressedSize;\n result.crc32 = file._data.crc32;\n\n if (result.uncompressedSize === 0 || file.dir) {\n compression = compressions['STORE'];\n result.compressedContent = \"\";\n result.crc32 = 0;\n }\n else if (file._data.compressionMethod === compression.magic) {\n result.compressedContent = file._data.getCompressedContent();\n }\n else {\n content = file._data.getContent();\n // need to decompress / recompress\n result.compressedContent = compression.compress(utils.transformTo(compression.compressInputType, content), compressionOptions);\n }\n }\n else {\n // have uncompressed data\n content = getBinaryData(file);\n if (!content || content.length === 0 || file.dir) {\n compression = compressions['STORE'];\n content = \"\";\n }\n result.uncompressedSize = content.length;\n result.crc32 = crc32(content);\n result.compressedContent = compression.compress(utils.transformTo(compression.compressInputType, content), compressionOptions);\n }\n\n result.compressedSize = result.compressedContent.length;\n result.compressionMethod = compression.magic;\n\n return result;\n};\n\n\n\n\n/**\n * Generate the UNIX part of the external file attributes.\n * @param {Object} unixPermissions the unix permissions or null.\n * @param {Boolean} isDir true if the entry is a directory, false otherwise.\n * @return {Number} a 32 bit integer.\n *\n * adapted from http://unix.stackexchange.com/questions/14705/the-zip-formats-external-file-attribute :\n *\n * TTTTsstrwxrwxrwx0000000000ADVSHR\n * ^^^^____________________________ file type, see zipinfo.c (UNX_*)\n * ^^^_________________________ setuid, setgid, sticky\n * ^^^^^^^^^________________ permissions\n * ^^^^^^^^^^______ not used ?\n * ^^^^^^ DOS attribute bits : Archive, Directory, Volume label, System file, Hidden, Read only\n */\nvar generateUnixExternalFileAttr = function (unixPermissions, isDir) {\n\n var result = unixPermissions;\n if (!unixPermissions) {\n // I can't use octal values in strict mode, hence the hexa.\n // 040775 => 0x41fd\n // 0100664 => 0x81b4\n result = isDir ? 0x41fd : 0x81b4;\n }\n\n return (result & 0xFFFF) << 16;\n};\n\n/**\n * Generate the DOS part of the external file attributes.\n * @param {Object} dosPermissions the dos permissions or null.\n * @param {Boolean} isDir true if the entry is a directory, false otherwise.\n * @return {Number} a 32 bit integer.\n *\n * Bit 0 Read-Only\n * Bit 1 Hidden\n * Bit 2 System\n * Bit 3 Volume Label\n * Bit 4 Directory\n * Bit 5 Archive\n */\nvar generateDosExternalFileAttr = function (dosPermissions, isDir) {\n\n // the dir flag is already set for compatibility\n\n return (dosPermissions || 0) & 0x3F;\n};\n\n/**\n * Generate the various parts used in the construction of the final zip file.\n * @param {string} name the file name.\n * @param {ZipObject} file the file content.\n * @param {JSZip.CompressedObject} compressedObject the compressed object.\n * @param {number} offset the current offset from the start of the zip file.\n * @param {String} platform let's pretend we are this platform (change platform dependents fields)\n * @param {Function} encodeFileName the function to encode the file name / comment.\n * @return {object} the zip parts.\n */\nvar generateZipParts = function(name, file, compressedObject, offset, platform, encodeFileName) {\n var data = compressedObject.compressedContent,\n useCustomEncoding = encodeFileName !== utf8.utf8encode,\n encodedFileName = utils.transformTo(\"string\", encodeFileName(file.name)),\n utfEncodedFileName = utils.transformTo(\"string\", utf8.utf8encode(file.name)),\n comment = file.comment || \"\",\n encodedComment = utils.transformTo(\"string\", encodeFileName(comment)),\n utfEncodedComment = utils.transformTo(\"string\", utf8.utf8encode(comment)),\n useUTF8ForFileName = utfEncodedFileName.length !== file.name.length,\n useUTF8ForComment = utfEncodedComment.length !== comment.length,\n o = file.options,\n dosTime,\n dosDate,\n extraFields = \"\",\n unicodePathExtraField = \"\",\n unicodeCommentExtraField = \"\",\n dir, date;\n\n\n // handle the deprecated options.dir\n if (file._initialMetadata.dir !== file.dir) {\n dir = file.dir;\n } else {\n dir = o.dir;\n }\n\n // handle the deprecated options.date\n if(file._initialMetadata.date !== file.date) {\n date = file.date;\n } else {\n date = o.date;\n }\n\n var extFileAttr = 0;\n var versionMadeBy = 0;\n if (dir) {\n // dos or unix, we set the dos dir flag\n extFileAttr |= 0x00010;\n }\n if(platform === \"UNIX\") {\n versionMadeBy = 0x031E; // UNIX, version 3.0\n extFileAttr |= generateUnixExternalFileAttr(file.unixPermissions, dir);\n } else { // DOS or other, fallback to DOS\n versionMadeBy = 0x0014; // DOS, version 2.0\n extFileAttr |= generateDosExternalFileAttr(file.dosPermissions, dir);\n }\n\n // date\n // @see http://www.delorie.com/djgpp/doc/rbinter/it/52/13.html\n // @see http://www.delorie.com/djgpp/doc/rbinter/it/65/16.html\n // @see http://www.delorie.com/djgpp/doc/rbinter/it/66/16.html\n\n dosTime = date.getHours();\n dosTime = dosTime << 6;\n dosTime = dosTime | date.getMinutes();\n dosTime = dosTime << 5;\n dosTime = dosTime | date.getSeconds() / 2;\n\n dosDate = date.getFullYear() - 1980;\n dosDate = dosDate << 4;\n dosDate = dosDate | (date.getMonth() + 1);\n dosDate = dosDate << 5;\n dosDate = dosDate | date.getDate();\n\n if (useUTF8ForFileName) {\n // set the unicode path extra field. unzip needs at least one extra\n // field to correctly handle unicode path, so using the path is as good\n // as any other information. This could improve the situation with\n // other archive managers too.\n // This field is usually used without the utf8 flag, with a non\n // unicode path in the header (winrar, winzip). This helps (a bit)\n // with the messy Windows' default compressed folders feature but\n // breaks on p7zip which doesn't seek the unicode path extra field.\n // So for now, UTF-8 everywhere !\n unicodePathExtraField =\n // Version\n decToHex(1, 1) +\n // NameCRC32\n decToHex(crc32(encodedFileName), 4) +\n // UnicodeName\n utfEncodedFileName;\n\n extraFields +=\n // Info-ZIP Unicode Path Extra Field\n \"\\x75\\x70\" +\n // size\n decToHex(unicodePathExtraField.length, 2) +\n // content\n unicodePathExtraField;\n }\n\n if(useUTF8ForComment) {\n\n unicodeCommentExtraField =\n // Version\n decToHex(1, 1) +\n // CommentCRC32\n decToHex(this.crc32(encodedComment), 4) +\n // UnicodeName\n utfEncodedComment;\n\n extraFields +=\n // Info-ZIP Unicode Path Extra Field\n \"\\x75\\x63\" +\n // size\n decToHex(unicodeCommentExtraField.length, 2) +\n // content\n unicodeCommentExtraField;\n }\n\n var header = \"\";\n\n // version needed to extract\n header += \"\\x0A\\x00\";\n // general purpose bit flag\n // set bit 11 if utf8\n header += !useCustomEncoding && (useUTF8ForFileName || useUTF8ForComment) ? \"\\x00\\x08\" : \"\\x00\\x00\";\n // compression method\n header += compressedObject.compressionMethod;\n // last mod file time\n header += decToHex(dosTime, 2);\n // last mod file date\n header += decToHex(dosDate, 2);\n // crc-32\n header += decToHex(compressedObject.crc32, 4);\n // compressed size\n header += decToHex(compressedObject.compressedSize, 4);\n // uncompressed size\n header += decToHex(compressedObject.uncompressedSize, 4);\n // file name length\n header += decToHex(encodedFileName.length, 2);\n // extra field length\n header += decToHex(extraFields.length, 2);\n\n\n var fileRecord = signature.LOCAL_FILE_HEADER + header + encodedFileName + extraFields;\n\n var dirRecord = signature.CENTRAL_FILE_HEADER +\n // version made by (00: DOS)\n decToHex(versionMadeBy, 2) +\n // file header (common to file and central directory)\n header +\n // file comment length\n decToHex(encodedComment.length, 2) +\n // disk number start\n \"\\x00\\x00\" +\n // internal file attributes TODO\n \"\\x00\\x00\" +\n // external file attributes\n decToHex(extFileAttr, 4) +\n // relative offset of local header\n decToHex(offset, 4) +\n // file name\n encodedFileName +\n // extra field\n extraFields +\n // file comment\n encodedComment;\n\n return {\n fileRecord: fileRecord,\n dirRecord: dirRecord,\n compressedObject: compressedObject\n };\n};\n\n\n// return the actual prototype of JSZip\nvar out = {\n /**\n * Read an existing zip and merge the data in the current JSZip object.\n * The implementation is in jszip-load.js, don't forget to include it.\n * @param {String|ArrayBuffer|Uint8Array|Buffer} stream The stream to load\n * @param {Object} options Options for loading the stream.\n * options.base64 : is the stream in base64 ? default : false\n * @return {JSZip} the current JSZip object\n */\n load: function(stream, options) {\n throw new Error(\"Load method is not defined. Is the file jszip-load.js included ?\");\n },\n\n /**\n * Filter nested files/folders with the specified function.\n * @param {Function} search the predicate to use :\n * function (relativePath, file) {...}\n * It takes 2 arguments : the relative path and the file.\n * @return {Array} An array of matching elements.\n */\n filter: function(search) {\n var result = [],\n filename, relativePath, file, fileClone;\n for (filename in this.files) {\n if (!this.files.hasOwnProperty(filename)) {\n continue;\n }\n file = this.files[filename];\n // return a new object, don't let the user mess with our internal objects :)\n fileClone = new ZipObject(file.name, file._data, utils.extend(file.options));\n relativePath = filename.slice(this.root.length, filename.length);\n if (filename.slice(0, this.root.length) === this.root && // the file is in the current root\n search(relativePath, fileClone)) { // and the file matches the function\n result.push(fileClone);\n }\n }\n return result;\n },\n\n /**\n * Add a file to the zip file, or search a file.\n * @param {string|RegExp} name The name of the file to add (if data is defined),\n * the name of the file to find (if no data) or a regex to match files.\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data The file data, either raw or base64 encoded\n * @param {Object} o File options\n * @return {JSZip|Object|Array} this JSZip object (when adding a file),\n * a file (when searching by string) or an array of files (when searching by regex).\n */\n file: function(name, data, o) {\n if (arguments.length === 1) {\n if (utils.isRegExp(name)) {\n var regexp = name;\n return this.filter(function(relativePath, file) {\n return !file.dir && regexp.test(relativePath);\n });\n }\n else { // text\n return this.filter(function(relativePath, file) {\n return !file.dir && relativePath === name;\n })[0] || null;\n }\n }\n else { // more than one argument : we have data !\n name = this.root + name;\n fileAdd.call(this, name, data, o);\n }\n return this;\n },\n\n /**\n * Add a directory to the zip file, or search.\n * @param {String|RegExp} arg The name of the directory to add, or a regex to search folders.\n * @return {JSZip} an object with the new directory as the root, or an array containing matching folders.\n */\n folder: function(arg) {\n if (!arg) {\n return this;\n }\n\n if (utils.isRegExp(arg)) {\n return this.filter(function(relativePath, file) {\n return file.dir && arg.test(relativePath);\n });\n }\n\n // else, name is a new folder\n var name = this.root + arg;\n var newFolder = folderAdd.call(this, name);\n\n // Allow chaining by returning a new object with this folder as the root\n var ret = this.clone();\n ret.root = newFolder.name;\n return ret;\n },\n\n /**\n * Delete a file, or a directory and all sub-files, from the zip\n * @param {string} name the name of the file to delete\n * @return {JSZip} this JSZip object\n */\n remove: function(name) {\n name = this.root + name;\n var file = this.files[name];\n if (!file) {\n // Look for any folders\n if (name.slice(-1) != \"/\") {\n name += \"/\";\n }\n file = this.files[name];\n }\n\n if (file && !file.dir) {\n // file\n delete this.files[name];\n } else {\n // maybe a folder, delete recursively\n var kids = this.filter(function(relativePath, file) {\n return file.name.slice(0, name.length) === name;\n });\n for (var i = 0; i < kids.length; i++) {\n delete this.files[kids[i].name];\n }\n }\n\n return this;\n },\n\n /**\n * Generate the complete zip file\n * @param {Object} options the options to generate the zip file :\n * - base64, (deprecated, use type instead) true to generate base64.\n * - compression, \"STORE\" by default.\n * - type, \"base64\" by default. Values are : string, base64, uint8array, arraybuffer, blob.\n * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the zip file\n */\n generate: function(options) {\n options = utils.extend(options || {}, {\n base64: true,\n compression: \"STORE\",\n compressionOptions : null,\n type: \"base64\",\n platform: \"DOS\",\n comment: null,\n mimeType: 'application/zip',\n encodeFileName: utf8.utf8encode\n });\n\n utils.checkSupport(options.type);\n\n // accept nodejs `process.platform`\n if(\n options.platform === 'darwin' ||\n options.platform === 'freebsd' ||\n options.platform === 'linux' ||\n options.platform === 'sunos'\n ) {\n options.platform = \"UNIX\";\n }\n if (options.platform === 'win32') {\n options.platform = \"DOS\";\n }\n\n var zipData = [],\n localDirLength = 0,\n centralDirLength = 0,\n writer, i,\n encodedComment = utils.transformTo(\"string\", options.encodeFileName(options.comment || this.comment || \"\"));\n\n // first, generate all the zip parts.\n for (var name in this.files) {\n if (!this.files.hasOwnProperty(name)) {\n continue;\n }\n var file = this.files[name];\n\n var compressionName = file.options.compression || options.compression.toUpperCase();\n var compression = compressions[compressionName];\n if (!compression) {\n throw new Error(compressionName + \" is not a valid compression method !\");\n }\n var compressionOptions = file.options.compressionOptions || options.compressionOptions || {};\n\n var compressedObject = generateCompressedObjectFrom.call(this, file, compression, compressionOptions);\n\n var zipPart = generateZipParts.call(this, name, file, compressedObject, localDirLength, options.platform, options.encodeFileName);\n localDirLength += zipPart.fileRecord.length + compressedObject.compressedSize;\n centralDirLength += zipPart.dirRecord.length;\n zipData.push(zipPart);\n }\n\n var dirEnd = \"\";\n\n // end of central dir signature\n dirEnd = signature.CENTRAL_DIRECTORY_END +\n // number of this disk\n \"\\x00\\x00\" +\n // number of the disk with the start of the central directory\n \"\\x00\\x00\" +\n // total number of entries in the central directory on this disk\n decToHex(zipData.length, 2) +\n // total number of entries in the central directory\n decToHex(zipData.length, 2) +\n // size of the central directory 4 bytes\n decToHex(centralDirLength, 4) +\n // offset of start of central directory with respect to the starting disk number\n decToHex(localDirLength, 4) +\n // .ZIP file comment length\n decToHex(encodedComment.length, 2) +\n // .ZIP file comment\n encodedComment;\n\n\n // we have all the parts (and the total length)\n // time to create a writer !\n var typeName = options.type.toLowerCase();\n if(typeName===\"uint8array\"||typeName===\"arraybuffer\"||typeName===\"blob\"||typeName===\"nodebuffer\") {\n writer = new Uint8ArrayWriter(localDirLength + centralDirLength + dirEnd.length);\n }else{\n writer = new StringWriter(localDirLength + centralDirLength + dirEnd.length);\n }\n\n for (i = 0; i < zipData.length; i++) {\n writer.append(zipData[i].fileRecord);\n writer.append(zipData[i].compressedObject.compressedContent);\n }\n for (i = 0; i < zipData.length; i++) {\n writer.append(zipData[i].dirRecord);\n }\n\n writer.append(dirEnd);\n\n var zip = writer.finalize();\n\n\n\n switch(options.type.toLowerCase()) {\n // case \"zip is an Uint8Array\"\n case \"uint8array\" :\n case \"arraybuffer\" :\n case \"nodebuffer\" :\n return utils.transformTo(options.type.toLowerCase(), zip);\n case \"blob\" :\n return utils.arrayBuffer2Blob(utils.transformTo(\"arraybuffer\", zip), options.mimeType);\n // case \"zip is a string\"\n case \"base64\" :\n return (options.base64) ? base64.encode(zip) : zip;\n default : // case \"string\" :\n return zip;\n }\n\n },\n\n /**\n * @deprecated\n * This method will be removed in a future version without replacement.\n */\n crc32: function (input, crc) {\n return crc32(input, crc);\n },\n\n /**\n * @deprecated\n * This method will be removed in a future version without replacement.\n */\n utf8encode: function (string) {\n return utils.transformTo(\"string\", utf8.utf8encode(string));\n },\n\n /**\n * @deprecated\n * This method will be removed in a future version without replacement.\n */\n utf8decode: function (input) {\n return utf8.utf8decode(input);\n }\n};\nmodule.exports = out;\n","'use strict';\nexports.STORE = {\n magic: \"\\x00\\x00\",\n compress: function(content, compressionOptions) {\n return content; // no compression\n },\n uncompress: function(content) {\n return content; // no compression\n },\n compressInputType: null,\n uncompressInputType: null\n};\nexports.DEFLATE = require('./flate');\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nmodule.exports = {\n 2: 'need dictionary', /* Z_NEED_DICT 2 */\n 1: 'stream end', /* Z_STREAM_END 1 */\n 0: '', /* Z_OK 0 */\n '-1': 'file error', /* Z_ERRNO (-1) */\n '-2': 'stream error', /* Z_STREAM_ERROR (-2) */\n '-3': 'data error', /* Z_DATA_ERROR (-3) */\n '-4': 'insufficient memory', /* Z_MEM_ERROR (-4) */\n '-5': 'buffer error', /* Z_BUF_ERROR (-5) */\n '-6': 'incompatible version' /* Z_VERSION_ERROR (-6) */\n};\n","'use strict';\nmodule.exports = function(data, encoding){\n return new Buffer(data, encoding);\n};\nmodule.exports.test = function(b){\n return Buffer.isBuffer(b);\n};\n","'use strict';\n\n// Note: adler32 takes 12% for level 0 and 2% for level 6.\n// It isn't worth it to make additional optimizations as in original.\n// Small size is preferable.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction adler32(adler, buf, len, pos) {\n var s1 = (adler & 0xffff) |0,\n s2 = ((adler >>> 16) & 0xffff) |0,\n n = 0;\n\n while (len !== 0) {\n // Set limit ~ twice less than 5552, to keep\n // s2 in 31-bits, because we force signed ints.\n // in other case %= will fail.\n n = len > 2000 ? 2000 : len;\n len -= n;\n\n do {\n s1 = (s1 + buf[pos++]) |0;\n s2 = (s2 + s1) |0;\n } while (--n);\n\n s1 %= 65521;\n s2 %= 65521;\n }\n\n return (s1 | (s2 << 16)) |0;\n}\n\n\nmodule.exports = adler32;\n","'use strict';\n\n// Note: we can't get significant speed boost here.\n// So write code to minimize size - no pregenerated tables\n// and array tools dependencies.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// Use ordinary array, since untyped makes no boost here\nfunction makeTable() {\n var c, table = [];\n\n for (var n = 0; n < 256; n++) {\n c = n;\n for (var k = 0; k < 8; k++) {\n c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));\n }\n table[n] = c;\n }\n\n return table;\n}\n\n// Create table on load. Just 255 signed longs. Not a problem.\nvar crcTable = makeTable();\n\n\nfunction crc32(crc, buf, len, pos) {\n var t = crcTable,\n end = pos + len;\n\n crc ^= -1;\n\n for (var i = pos; i < end; i++) {\n crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];\n }\n\n return (crc ^ (-1)); // >>> 0;\n}\n\n\nmodule.exports = crc32;\n","// String encode/decode helpers\n'use strict';\n\n\nvar utils = require('./common');\n\n\n// Quick check if we can use fast array to bin string conversion\n//\n// - apply(Array) can fail on Android 2.2\n// - apply(Uint8Array) can fail on iOS 5.1 Safari\n//\nvar STR_APPLY_OK = true;\nvar STR_APPLY_UIA_OK = true;\n\ntry { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; }\ntry { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; }\n\n\n// Table with utf8 lengths (calculated by first byte of sequence)\n// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,\n// because max possible codepoint is 0x10ffff\nvar _utf8len = new utils.Buf8(256);\nfor (var q = 0; q < 256; q++) {\n _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);\n}\n_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start\n\n\n// convert string to array (typed, when possible)\nexports.string2buf = function (str) {\n var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n\n // count binary size\n for (m_pos = 0; m_pos < str_len; m_pos++) {\n c = str.charCodeAt(m_pos);\n if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n c2 = str.charCodeAt(m_pos + 1);\n if ((c2 & 0xfc00) === 0xdc00) {\n c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n m_pos++;\n }\n }\n buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;\n }\n\n // allocate buffer\n buf = new utils.Buf8(buf_len);\n\n // convert\n for (i = 0, m_pos = 0; i < buf_len; m_pos++) {\n c = str.charCodeAt(m_pos);\n if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n c2 = str.charCodeAt(m_pos + 1);\n if ((c2 & 0xfc00) === 0xdc00) {\n c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n m_pos++;\n }\n }\n if (c < 0x80) {\n /* one byte */\n buf[i++] = c;\n } else if (c < 0x800) {\n /* two bytes */\n buf[i++] = 0xC0 | (c >>> 6);\n buf[i++] = 0x80 | (c & 0x3f);\n } else if (c < 0x10000) {\n /* three bytes */\n buf[i++] = 0xE0 | (c >>> 12);\n buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n buf[i++] = 0x80 | (c & 0x3f);\n } else {\n /* four bytes */\n buf[i++] = 0xf0 | (c >>> 18);\n buf[i++] = 0x80 | (c >>> 12 & 0x3f);\n buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n buf[i++] = 0x80 | (c & 0x3f);\n }\n }\n\n return buf;\n};\n\n// Helper (used in 2 places)\nfunction buf2binstring(buf, len) {\n // On Chrome, the arguments in a function call that are allowed is `65534`.\n // If the length of the buffer is smaller than that, we can use this optimization,\n // otherwise we will take a slower path.\n if (len < 65534) {\n if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) {\n return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len));\n }\n }\n\n var result = '';\n for (var i = 0; i < len; i++) {\n result += String.fromCharCode(buf[i]);\n }\n return result;\n}\n\n\n// Convert byte array to binary string\nexports.buf2binstring = function (buf) {\n return buf2binstring(buf, buf.length);\n};\n\n\n// Convert binary string (typed, when possible)\nexports.binstring2buf = function (str) {\n var buf = new utils.Buf8(str.length);\n for (var i = 0, len = buf.length; i < len; i++) {\n buf[i] = str.charCodeAt(i);\n }\n return buf;\n};\n\n\n// convert array to string\nexports.buf2string = function (buf, max) {\n var i, out, c, c_len;\n var len = max || buf.length;\n\n // Reserve max possible length (2 words per char)\n // NB: by unknown reasons, Array is significantly faster for\n // String.fromCharCode.apply than Uint16Array.\n var utf16buf = new Array(len * 2);\n\n for (out = 0, i = 0; i < len;) {\n c = buf[i++];\n // quick process ascii\n if (c < 0x80) { utf16buf[out++] = c; continue; }\n\n c_len = _utf8len[c];\n // skip 5 & 6 byte codes\n if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }\n\n // apply mask on first byte\n c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;\n // join the rest\n while (c_len > 1 && i < len) {\n c = (c << 6) | (buf[i++] & 0x3f);\n c_len--;\n }\n\n // terminated by end of string?\n if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }\n\n if (c < 0x10000) {\n utf16buf[out++] = c;\n } else {\n c -= 0x10000;\n utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);\n utf16buf[out++] = 0xdc00 | (c & 0x3ff);\n }\n }\n\n return buf2binstring(utf16buf, out);\n};\n\n\n// Calculate max possible position in utf8 buffer,\n// that will not break sequence. If that's not possible\n// - (very small limits) return max size as is.\n//\n// buf[] - utf8 bytes array\n// max - length limit (mandatory);\nexports.utf8border = function (buf, max) {\n var pos;\n\n max = max || buf.length;\n if (max > buf.length) { max = buf.length; }\n\n // go back from last position, until start of sequence found\n pos = max - 1;\n while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }\n\n // Very small and broken sequence,\n // return max, because we should return something anyway.\n if (pos < 0) { return max; }\n\n // If we came to start of buffer - that means buffer is too small,\n // return max too.\n if (pos === 0) { return max; }\n\n return (pos + _utf8len[buf[pos]] > max) ? pos : max;\n};\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction ZStream() {\n /* next input byte */\n this.input = null; // JS specific, because we have no pointers\n this.next_in = 0;\n /* number of bytes available at input */\n this.avail_in = 0;\n /* total number of input bytes read so far */\n this.total_in = 0;\n /* next output byte should be put there */\n this.output = null; // JS specific, because we have no pointers\n this.next_out = 0;\n /* remaining free space at output */\n this.avail_out = 0;\n /* total number of bytes output so far */\n this.total_out = 0;\n /* last error message, NULL if no error */\n this.msg = ''/*Z_NULL*/;\n /* not visible by applications */\n this.state = null;\n /* best guess about the data type: binary or text */\n this.data_type = 2/*Z_UNKNOWN*/;\n /* adler32 value of the uncompressed data */\n this.adler = 0;\n}\n\nmodule.exports = ZStream;\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nmodule.exports = {\n\n /* Allowed flush values; see deflate() and inflate() below for details */\n Z_NO_FLUSH: 0,\n Z_PARTIAL_FLUSH: 1,\n Z_SYNC_FLUSH: 2,\n Z_FULL_FLUSH: 3,\n Z_FINISH: 4,\n Z_BLOCK: 5,\n Z_TREES: 6,\n\n /* Return codes for the compression/decompression functions. Negative values\n * are errors, positive values are used for special but normal events.\n */\n Z_OK: 0,\n Z_STREAM_END: 1,\n Z_NEED_DICT: 2,\n Z_ERRNO: -1,\n Z_STREAM_ERROR: -2,\n Z_DATA_ERROR: -3,\n //Z_MEM_ERROR: -4,\n Z_BUF_ERROR: -5,\n //Z_VERSION_ERROR: -6,\n\n /* compression levels */\n Z_NO_COMPRESSION: 0,\n Z_BEST_SPEED: 1,\n Z_BEST_COMPRESSION: 9,\n Z_DEFAULT_COMPRESSION: -1,\n\n\n Z_FILTERED: 1,\n Z_HUFFMAN_ONLY: 2,\n Z_RLE: 3,\n Z_FIXED: 4,\n Z_DEFAULT_STRATEGY: 0,\n\n /* Possible values of the data_type field (though see inflate()) */\n Z_BINARY: 0,\n Z_TEXT: 1,\n //Z_ASCII: 1, // = Z_TEXT (deprecated)\n Z_UNKNOWN: 2,\n\n /* The deflate compression method */\n Z_DEFLATED: 8\n //Z_NULL: null // Use -1 or null inline, depending on var type\n};\n","'use strict';\nexports.LOCAL_FILE_HEADER = \"PK\\x03\\x04\";\nexports.CENTRAL_FILE_HEADER = \"PK\\x01\\x02\";\nexports.CENTRAL_DIRECTORY_END = \"PK\\x05\\x06\";\nexports.ZIP64_CENTRAL_DIRECTORY_LOCATOR = \"PK\\x06\\x07\";\nexports.ZIP64_CENTRAL_DIRECTORY_END = \"PK\\x06\\x06\";\nexports.DATA_DESCRIPTOR = \"PK\\x07\\x08\";\n","'use strict';\nexports.base64 = false;\nexports.binary = false;\nexports.dir = false;\nexports.createFolders = false;\nexports.date = null;\nexports.compression = null;\nexports.compressionOptions = null;\nexports.comment = null;\nexports.unixPermissions = null;\nexports.dosPermissions = null;\n","'use strict';\nfunction CompressedObject() {\n this.compressedSize = 0;\n this.uncompressedSize = 0;\n this.crc32 = 0;\n this.compressionMethod = null;\n this.compressedContent = null;\n}\n\nCompressedObject.prototype = {\n /**\n * Return the decompressed content in an unspecified format.\n * The format will depend on the decompressor.\n * @return {Object} the decompressed content.\n */\n getContent: function() {\n return null; // see implementation\n },\n /**\n * Return the compressed content in an unspecified format.\n * The format will depend on the compressed conten source.\n * @return {Object} the compressed content.\n */\n getCompressedContent: function() {\n return null; // see implementation\n }\n};\nmodule.exports = CompressedObject;\n","'use strict';\n\nvar utils = require('./utils');\nvar support = require('./support');\nvar nodeBuffer = require('./nodeBuffer');\n\n/**\n * The following functions come from pako, from pako/lib/utils/strings\n * released under the MIT license, see pako https://github.com/nodeca/pako/\n */\n\n// Table with utf8 lengths (calculated by first byte of sequence)\n// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,\n// because max possible codepoint is 0x10ffff\nvar _utf8len = new Array(256);\nfor (var i=0; i<256; i++) {\n _utf8len[i] = (i >= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1);\n}\n_utf8len[254]=_utf8len[254]=1; // Invalid sequence start\n\n// convert string to array (typed, when possible)\nvar string2buf = function (str) {\n var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n\n // count binary size\n for (m_pos = 0; m_pos < str_len; m_pos++) {\n c = str.charCodeAt(m_pos);\n if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {\n c2 = str.charCodeAt(m_pos+1);\n if ((c2 & 0xfc00) === 0xdc00) {\n c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n m_pos++;\n }\n }\n buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;\n }\n\n // allocate buffer\n if (support.uint8array) {\n buf = new Uint8Array(buf_len);\n } else {\n buf = new Array(buf_len);\n }\n\n // convert\n for (i=0, m_pos = 0; i < buf_len; m_pos++) {\n c = str.charCodeAt(m_pos);\n if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {\n c2 = str.charCodeAt(m_pos+1);\n if ((c2 & 0xfc00) === 0xdc00) {\n c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n m_pos++;\n }\n }\n if (c < 0x80) {\n /* one byte */\n buf[i++] = c;\n } else if (c < 0x800) {\n /* two bytes */\n buf[i++] = 0xC0 | (c >>> 6);\n buf[i++] = 0x80 | (c & 0x3f);\n } else if (c < 0x10000) {\n /* three bytes */\n buf[i++] = 0xE0 | (c >>> 12);\n buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n buf[i++] = 0x80 | (c & 0x3f);\n } else {\n /* four bytes */\n buf[i++] = 0xf0 | (c >>> 18);\n buf[i++] = 0x80 | (c >>> 12 & 0x3f);\n buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n buf[i++] = 0x80 | (c & 0x3f);\n }\n }\n\n return buf;\n};\n\n// Calculate max possible position in utf8 buffer,\n// that will not break sequence. If that's not possible\n// - (very small limits) return max size as is.\n//\n// buf[] - utf8 bytes array\n// max - length limit (mandatory);\nvar utf8border = function(buf, max) {\n var pos;\n\n max = max || buf.length;\n if (max > buf.length) { max = buf.length; }\n\n // go back from last position, until start of sequence found\n pos = max-1;\n while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }\n\n // Fuckup - very small and broken sequence,\n // return max, because we should return something anyway.\n if (pos < 0) { return max; }\n\n // If we came to start of buffer - that means vuffer is too small,\n // return max too.\n if (pos === 0) { return max; }\n\n return (pos + _utf8len[buf[pos]] > max) ? pos : max;\n};\n\n// convert array to string\nvar buf2string = function (buf) {\n var str, i, out, c, c_len;\n var len = buf.length;\n\n // Reserve max possible length (2 words per char)\n // NB: by unknown reasons, Array is significantly faster for\n // String.fromCharCode.apply than Uint16Array.\n var utf16buf = new Array(len*2);\n\n for (out=0, i=0; i<len;) {\n c = buf[i++];\n // quick process ascii\n if (c < 0x80) { utf16buf[out++] = c; continue; }\n\n c_len = _utf8len[c];\n // skip 5 & 6 byte codes\n if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; }\n\n // apply mask on first byte\n c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;\n // join the rest\n while (c_len > 1 && i < len) {\n c = (c << 6) | (buf[i++] & 0x3f);\n c_len--;\n }\n\n // terminated by end of string?\n if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }\n\n if (c < 0x10000) {\n utf16buf[out++] = c;\n } else {\n c -= 0x10000;\n utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);\n utf16buf[out++] = 0xdc00 | (c & 0x3ff);\n }\n }\n\n // shrinkBuf(utf16buf, out)\n if (utf16buf.length !== out) {\n if(utf16buf.subarray) {\n utf16buf = utf16buf.subarray(0, out);\n } else {\n utf16buf.length = out;\n }\n }\n\n // return String.fromCharCode.apply(null, utf16buf);\n return utils.applyFromCharCode(utf16buf);\n};\n\n\n// That's all for the pako functions.\n\n\n/**\n * Transform a javascript string into an array (typed if possible) of bytes,\n * UTF-8 encoded.\n * @param {String} str the string to encode\n * @return {Array|Uint8Array|Buffer} the UTF-8 encoded string.\n */\nexports.utf8encode = function utf8encode(str) {\n if (support.nodebuffer) {\n return nodeBuffer(str, \"utf-8\");\n }\n\n return string2buf(str);\n};\n\n\n/**\n * Transform a bytes array (or a representation) representing an UTF-8 encoded\n * string into a javascript string.\n * @param {Array|Uint8Array|Buffer} buf the data de decode\n * @return {String} the decoded string.\n */\nexports.utf8decode = function utf8decode(buf) {\n if (support.nodebuffer) {\n return utils.transformTo(\"nodebuffer\", buf).toString(\"utf-8\");\n }\n\n buf = utils.transformTo(support.uint8array ? \"uint8array\" : \"array\", buf);\n\n // return buf2string(buf);\n // Chrome prefers to work with \"small\" chunks of data\n // for the method buf2string.\n // Firefox and Chrome has their own shortcut, IE doesn't seem to really care.\n var result = [], k = 0, len = buf.length, chunk = 65536;\n while (k < len) {\n var nextBoundary = utf8border(buf, Math.min(k + chunk, len));\n if (support.uint8array) {\n result.push(buf2string(buf.subarray(k, nextBoundary)));\n } else {\n result.push(buf2string(buf.slice(k, nextBoundary)));\n }\n k = nextBoundary;\n }\n return result.join(\"\");\n\n};\n// vim: set shiftwidth=4 softtabstop=4:\n","'use strict';\nvar DataReader = require('./dataReader');\nvar utils = require('./utils');\n\nfunction StringReader(data, optimizedBinaryString) {\n this.data = data;\n if (!optimizedBinaryString) {\n this.data = utils.string2binary(this.data);\n }\n this.length = this.data.length;\n this.index = 0;\n this.zero = 0;\n}\nStringReader.prototype = new DataReader();\n/**\n * @see DataReader.byteAt\n */\nStringReader.prototype.byteAt = function(i) {\n return this.data.charCodeAt(this.zero + i);\n};\n/**\n * @see DataReader.lastIndexOfSignature\n */\nStringReader.prototype.lastIndexOfSignature = function(sig) {\n return this.data.lastIndexOf(sig) - this.zero;\n};\n/**\n * @see DataReader.readData\n */\nStringReader.prototype.readData = function(size) {\n this.checkOffset(size);\n // this will work because the constructor applied the \"& 0xff\" mask.\n var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);\n this.index += size;\n return result;\n};\nmodule.exports = StringReader;\n","'use strict';\nvar utils = require('./utils');\n\nfunction DataReader(data) {\n this.data = null; // type : see implementation\n this.length = 0;\n this.index = 0;\n this.zero = 0;\n}\nDataReader.prototype = {\n /**\n * Check that the offset will not go too far.\n * @param {string} offset the additional offset to check.\n * @throws {Error} an Error if the offset is out of bounds.\n */\n checkOffset: function(offset) {\n this.checkIndex(this.index + offset);\n },\n /**\n * Check that the specifed index will not be too far.\n * @param {string} newIndex the index to check.\n * @throws {Error} an Error if the index is out of bounds.\n */\n checkIndex: function(newIndex) {\n if (this.length < this.zero + newIndex || newIndex < 0) {\n throw new Error(\"End of data reached (data length = \" + this.length + \", asked index = \" + (newIndex) + \"). Corrupted zip ?\");\n }\n },\n /**\n * Change the index.\n * @param {number} newIndex The new index.\n * @throws {Error} if the new index is out of the data.\n */\n setIndex: function(newIndex) {\n this.checkIndex(newIndex);\n this.index = newIndex;\n },\n /**\n * Skip the next n bytes.\n * @param {number} n the number of bytes to skip.\n * @throws {Error} if the new index is out of the data.\n */\n skip: function(n) {\n this.setIndex(this.index + n);\n },\n /**\n * Get the byte at the specified index.\n * @param {number} i the index to use.\n * @return {number} a byte.\n */\n byteAt: function(i) {\n // see implementations\n },\n /**\n * Get the next number with a given byte size.\n * @param {number} size the number of bytes to read.\n * @return {number} the corresponding number.\n */\n readInt: function(size) {\n var result = 0,\n i;\n this.checkOffset(size);\n for (i = this.index + size - 1; i >= this.index; i--) {\n result = (result << 8) + this.byteAt(i);\n }\n this.index += size;\n return result;\n },\n /**\n * Get the next string with a given byte size.\n * @param {number} size the number of bytes to read.\n * @return {string} the corresponding string.\n */\n readString: function(size) {\n return utils.transformTo(\"string\", this.readData(size));\n },\n /**\n * Get raw data without conversion, <size> bytes.\n * @param {number} size the number of bytes to read.\n * @return {Object} the raw data, implementation specific.\n */\n readData: function(size) {\n // see implementations\n },\n /**\n * Find the last occurence of a zip signature (4 bytes).\n * @param {string} sig the signature to find.\n * @return {number} the index of the last occurence, -1 if not found.\n */\n lastIndexOfSignature: function(sig) {\n // see implementations\n },\n /**\n * Get the next date.\n * @return {Date} the date.\n */\n readDate: function() {\n var dostime = this.readInt(4);\n return new Date(\n ((dostime >> 25) & 0x7f) + 1980, // year\n ((dostime >> 21) & 0x0f) - 1, // month\n (dostime >> 16) & 0x1f, // day\n (dostime >> 11) & 0x1f, // hour\n (dostime >> 5) & 0x3f, // minute\n (dostime & 0x1f) << 1); // second\n }\n};\nmodule.exports = DataReader;\n","'use strict';\nvar ArrayReader = require('./arrayReader');\n\nfunction Uint8ArrayReader(data) {\n if (data) {\n this.data = data;\n this.length = this.data.length;\n this.index = 0;\n this.zero = 0;\n }\n}\nUint8ArrayReader.prototype = new ArrayReader();\n/**\n * @see DataReader.readData\n */\nUint8ArrayReader.prototype.readData = function(size) {\n this.checkOffset(size);\n if(size === 0) {\n // in IE10, when using subarray(idx, idx), we get the array [0x00] instead of [].\n return new Uint8Array(0);\n }\n var result = this.data.subarray(this.zero + this.index, this.zero + this.index + size);\n this.index += size;\n return result;\n};\nmodule.exports = Uint8ArrayReader;\n","'use strict';\nvar DataReader = require('./dataReader');\n\nfunction ArrayReader(data) {\n if (data) {\n this.data = data;\n this.length = this.data.length;\n this.index = 0;\n this.zero = 0;\n\n for(var i = 0; i < this.data.length; i++) {\n data[i] = data[i] & 0xFF;\n }\n }\n}\nArrayReader.prototype = new DataReader();\n/**\n * @see DataReader.byteAt\n */\nArrayReader.prototype.byteAt = function(i) {\n return this.data[this.zero + i];\n};\n/**\n * @see DataReader.lastIndexOfSignature\n */\nArrayReader.prototype.lastIndexOfSignature = function(sig) {\n var sig0 = sig.charCodeAt(0),\n sig1 = sig.charCodeAt(1),\n sig2 = sig.charCodeAt(2),\n sig3 = sig.charCodeAt(3);\n for (var i = this.length - 4; i >= 0; --i) {\n if (this.data[i] === sig0 && this.data[i + 1] === sig1 && this.data[i + 2] === sig2 && this.data[i + 3] === sig3) {\n return i - this.zero;\n }\n }\n\n return -1;\n};\n/**\n * @see DataReader.readData\n */\nArrayReader.prototype.readData = function(size) {\n this.checkOffset(size);\n if(size === 0) {\n return [];\n }\n var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);\n this.index += size;\n return result;\n};\nmodule.exports = ArrayReader;\n","'use strict';\nvar immediate = require('immediate');\n\n/* istanbul ignore next */\nfunction INTERNAL() {}\n\nvar handlers = {};\n\nvar REJECTED = ['REJECTED'];\nvar FULFILLED = ['FULFILLED'];\nvar PENDING = ['PENDING'];\n\nmodule.exports = Promise;\n\nfunction Promise(resolver) {\n if (typeof resolver !== 'function') {\n throw new TypeError('resolver must be a function');\n }\n this.state = PENDING;\n this.queue = [];\n this.outcome = void 0;\n if (resolver !== INTERNAL) {\n safelyResolveThenable(this, resolver);\n }\n}\n\nPromise.prototype[\"finally\"] = function (callback) {\n if (typeof callback !== 'function') {\n return this;\n }\n var p = this.constructor;\n return this.then(resolve, reject);\n\n function resolve(value) {\n function yes () {\n return value;\n }\n return p.resolve(callback()).then(yes);\n }\n function reject(reason) {\n function no () {\n throw reason;\n }\n return p.resolve(callback()).then(no);\n }\n};\nPromise.prototype[\"catch\"] = function (onRejected) {\n return this.then(null, onRejected);\n};\nPromise.prototype.then = function (onFulfilled, onRejected) {\n if (typeof onFulfilled !== 'function' && this.state === FULFILLED ||\n typeof onRejected !== 'function' && this.state === REJECTED) {\n return this;\n }\n var promise = new this.constructor(INTERNAL);\n if (this.state !== PENDING) {\n var resolver = this.state === FULFILLED ? onFulfilled : onRejected;\n unwrap(promise, resolver, this.outcome);\n } else {\n this.queue.push(new QueueItem(promise, onFulfilled, onRejected));\n }\n\n return promise;\n};\nfunction QueueItem(promise, onFulfilled, onRejected) {\n this.promise = promise;\n if (typeof onFulfilled === 'function') {\n this.onFulfilled = onFulfilled;\n this.callFulfilled = this.otherCallFulfilled;\n }\n if (typeof onRejected === 'function') {\n this.onRejected = onRejected;\n this.callRejected = this.otherCallRejected;\n }\n}\nQueueItem.prototype.callFulfilled = function (value) {\n handlers.resolve(this.promise, value);\n};\nQueueItem.prototype.otherCallFulfilled = function (value) {\n unwrap(this.promise, this.onFulfilled, value);\n};\nQueueItem.prototype.callRejected = function (value) {\n handlers.reject(this.promise, value);\n};\nQueueItem.prototype.otherCallRejected = function (value) {\n unwrap(this.promise, this.onRejected, value);\n};\n\nfunction unwrap(promise, func, value) {\n immediate(function () {\n var returnValue;\n try {\n returnValue = func(value);\n } catch (e) {\n return handlers.reject(promise, e);\n }\n if (returnValue === promise) {\n handlers.reject(promise, new TypeError('Cannot resolve promise with itself'));\n } else {\n handlers.resolve(promise, returnValue);\n }\n });\n}\n\nhandlers.resolve = function (self, value) {\n var result = tryCatch(getThen, value);\n if (result.status === 'error') {\n return handlers.reject(self, result.value);\n }\n var thenable = result.value;\n\n if (thenable) {\n safelyResolveThenable(self, thenable);\n } else {\n self.state = FULFILLED;\n self.outcome = value;\n var i = -1;\n var len = self.queue.length;\n while (++i < len) {\n self.queue[i].callFulfilled(value);\n }\n }\n return self;\n};\nhandlers.reject = function (self, error) {\n self.state = REJECTED;\n self.outcome = error;\n var i = -1;\n var len = self.queue.length;\n while (++i < len) {\n self.queue[i].callRejected(error);\n }\n return self;\n};\n\nfunction getThen(obj) {\n // Make sure we only access the accessor once as required by the spec\n var then = obj && obj.then;\n if (obj && (typeof obj === 'object' || typeof obj === 'function') && typeof then === 'function') {\n return function appyThen() {\n then.apply(obj, arguments);\n };\n }\n}\n\nfunction safelyResolveThenable(self, thenable) {\n // Either fulfill, reject or reject with error\n var called = false;\n function onError(value) {\n if (called) {\n return;\n }\n called = true;\n handlers.reject(self, value);\n }\n\n function onSuccess(value) {\n if (called) {\n return;\n }\n called = true;\n handlers.resolve(self, value);\n }\n\n function tryToUnwrap() {\n thenable(onSuccess, onError);\n }\n\n var result = tryCatch(tryToUnwrap);\n if (result.status === 'error') {\n onError(result.value);\n }\n}\n\nfunction tryCatch(func, value) {\n var out = {};\n try {\n out.value = func(value);\n out.status = 'success';\n } catch (e) {\n out.status = 'error';\n out.value = e;\n }\n return out;\n}\n\nPromise.resolve = resolve;\nfunction resolve(value) {\n if (value instanceof this) {\n return value;\n }\n return handlers.resolve(new this(INTERNAL), value);\n}\n\nPromise.reject = reject;\nfunction reject(reason) {\n var promise = new this(INTERNAL);\n return handlers.reject(promise, reason);\n}\n\nPromise.all = all;\nfunction all(iterable) {\n var self = this;\n if (Object.prototype.toString.call(iterable) !== '[object Array]') {\n return this.reject(new TypeError('must be an array'));\n }\n\n var len = iterable.length;\n var called = false;\n if (!len) {\n return this.resolve([]);\n }\n\n var values = new Array(len);\n var resolved = 0;\n var i = -1;\n var promise = new this(INTERNAL);\n\n while (++i < len) {\n allResolver(iterable[i], i);\n }\n return promise;\n function allResolver(value, i) {\n self.resolve(value).then(resolveFromAll, function (error) {\n if (!called) {\n called = true;\n handlers.reject(promise, error);\n }\n });\n function resolveFromAll(outValue) {\n values[i] = outValue;\n if (++resolved === len && !called) {\n called = true;\n handlers.resolve(promise, values);\n }\n }\n }\n}\n\nPromise.race = race;\nfunction race(iterable) {\n var self = this;\n if (Object.prototype.toString.call(iterable) !== '[object Array]') {\n return this.reject(new TypeError('must be an array'));\n }\n\n var len = iterable.length;\n var called = false;\n if (!len) {\n return this.resolve([]);\n }\n\n var i = -1;\n var promise = new this(INTERNAL);\n\n while (++i < len) {\n resolver(iterable[i]);\n }\n return promise;\n function resolver(value) {\n self.resolve(value).then(function (response) {\n if (!called) {\n called = true;\n handlers.resolve(promise, response);\n }\n }, function (error) {\n if (!called) {\n called = true;\n handlers.reject(promise, error);\n }\n });\n }\n}\n","function _typeof(obj) {\n \"@babel/helpers - typeof\";\n\n return (module.exports = _typeof = \"function\" == typeof Symbol && \"symbol\" == typeof Symbol.iterator ? function (obj) {\n return typeof obj;\n } : function (obj) {\n return obj && \"function\" == typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n }, module.exports.__esModule = true, module.exports[\"default\"] = module.exports), _typeof(obj);\n}\n\nmodule.exports = _typeof, module.exports.__esModule = true, module.exports[\"default\"] = module.exports;","'use strict';\n\nvar JSZip = require('jszip');\nmodule.exports = function(buffer) {\n\tvar zip = new JSZip(buffer);\n\tvar files = zip.file(/.+/);\n\tvar out = {};\n\tfiles.forEach(function(a) {\n\t\tif (a.name.slice(-3).toLowerCase() === 'shp' || a.name.slice(-3).toLowerCase() === 'dbf') {\n\t\t\tout[a.name] = a.asNodeBuffer();\n\t\t}\n\t\telse {\n\t\t\tout[a.name] = a.asText();\n\t\t}\n\t});\n\treturn out;\n};\n","'use strict';\n\nvar base64 = require('./base64');\n\n/**\nUsage:\n zip = new JSZip();\n zip.file(\"hello.txt\", \"Hello, World!\").file(\"tempfile\", \"nothing\");\n zip.folder(\"images\").file(\"smile.gif\", base64Data, {base64: true});\n zip.file(\"Xmas.txt\", \"Ho ho ho !\", {date : new Date(\"December 25, 2007 00:00:01\")});\n zip.remove(\"tempfile\");\n\n base64zip = zip.generate();\n\n**/\n\n/**\n * Representation a of zip file in js\n * @constructor\n * @param {String=|ArrayBuffer=|Uint8Array=} data the data to load, if any (optional).\n * @param {Object=} options the options for creating this objects (optional).\n */\nfunction JSZip(data, options) {\n // if this constructor is used without `new`, it adds `new` before itself:\n if(!(this instanceof JSZip)) return new JSZip(data, options);\n\n // object containing the files :\n // {\n // \"folder/\" : {...},\n // \"folder/data.txt\" : {...}\n // }\n this.files = {};\n\n this.comment = null;\n\n // Where we are in the hierarchy\n this.root = \"\";\n if (data) {\n this.load(data, options);\n }\n this.clone = function() {\n var newObj = new JSZip();\n for (var i in this) {\n if (typeof this[i] !== \"function\") {\n newObj[i] = this[i];\n }\n }\n return newObj;\n };\n}\nJSZip.prototype = require('./object');\nJSZip.prototype.load = require('./load');\nJSZip.support = require('./support');\nJSZip.defaults = require('./defaults');\n\n/**\n * @deprecated\n * This namespace will be removed in a future version without replacement.\n */\nJSZip.utils = require('./deprecatedPublicUtils');\n\nJSZip.base64 = {\n /**\n * @deprecated\n * This method will be removed in a future version without replacement.\n */\n encode : function(input) {\n return base64.encode(input);\n },\n /**\n * @deprecated\n * This method will be removed in a future version without replacement.\n */\n decode : function(input) {\n return base64.decode(input);\n }\n};\nJSZip.compressions = require('./compressions');\nmodule.exports = JSZip;\n","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n lookup[i] = code[i]\n revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n var len = b64.length\n\n if (len % 4 > 0) {\n throw new Error('Invalid string. Length must be a multiple of 4')\n }\n\n // Trim off extra bytes after placeholder bytes are found\n // See: https://github.com/beatgammit/base64-js/issues/42\n var validLen = b64.indexOf('=')\n if (validLen === -1) validLen = len\n\n var placeHoldersLen = validLen === len\n ? 0\n : 4 - (validLen % 4)\n\n return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n var lens = getLens(b64)\n var validLen = lens[0]\n var placeHoldersLen = lens[1]\n return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n var tmp\n var lens = getLens(b64)\n var validLen = lens[0]\n var placeHoldersLen = lens[1]\n\n var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n var curByte = 0\n\n // if there are placeholders, only get up to the last complete 4 chars\n var len = placeHoldersLen > 0\n ? validLen - 4\n : validLen\n\n var i\n for (i = 0; i < len; i += 4) {\n tmp =\n (revLookup[b64.charCodeAt(i)] << 18) |\n (revLookup[b64.charCodeAt(i + 1)] << 12) |\n (revLookup[b64.charCodeAt(i + 2)] << 6) |\n revLookup[b64.charCodeAt(i + 3)]\n arr[curByte++] = (tmp >> 16) & 0xFF\n arr[curByte++] = (tmp >> 8) & 0xFF\n arr[curByte++] = tmp & 0xFF\n }\n\n if (placeHoldersLen === 2) {\n tmp =\n (revLookup[b64.charCodeAt(i)] << 2) |\n (revLookup[b64.charCodeAt(i + 1)] >> 4)\n arr[curByte++] = tmp & 0xFF\n }\n\n if (placeHoldersLen === 1) {\n tmp =\n (revLookup[b64.charCodeAt(i)] << 10) |\n (revLookup[b64.charCodeAt(i + 1)] << 4) |\n (revLookup[b64.charCodeAt(i + 2)] >> 2)\n arr[curByte++] = (tmp >> 8) & 0xFF\n arr[curByte++] = tmp & 0xFF\n }\n\n return arr\n}\n\nfunction tripletToBase64 (num) {\n return lookup[num >> 18 & 0x3F] +\n lookup[num >> 12 & 0x3F] +\n lookup[num >> 6 & 0x3F] +\n lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n var tmp\n var output = []\n for (var i = start; i < end; i += 3) {\n tmp =\n ((uint8[i] << 16) & 0xFF0000) +\n ((uint8[i + 1] << 8) & 0xFF00) +\n (uint8[i + 2] & 0xFF)\n output.push(tripletToBase64(tmp))\n }\n return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n var tmp\n var len = uint8.length\n var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n var parts = []\n var maxChunkLength = 16383 // must be multiple of 3\n\n // go through the array every three bytes, we'll deal with trailing stuff later\n for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))\n }\n\n // pad the end with zeros, but make sure to not forget the extra bytes\n if (extraBytes === 1) {\n tmp = uint8[len - 1]\n parts.push(\n lookup[tmp >> 2] +\n lookup[(tmp << 4) & 0x3F] +\n '=='\n )\n } else if (extraBytes === 2) {\n tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n parts.push(\n lookup[tmp >> 10] +\n lookup[(tmp >> 4) & 0x3F] +\n lookup[(tmp << 2) & 0x3F] +\n '='\n )\n }\n\n return parts.join('')\n}\n","/*! ieee754. BSD-3-Clause License. Feross Aboukhadijeh <https://feross.org/opensource> */\nexports.read = function (buffer, offset, isLE, mLen, nBytes) {\n var e, m\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var nBits = -7\n var i = isLE ? (nBytes - 1) : 0\n var d = isLE ? -1 : 1\n var s = buffer[offset + i]\n\n i += d\n\n e = s & ((1 << (-nBits)) - 1)\n s >>= (-nBits)\n nBits += eLen\n for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n m = e & ((1 << (-nBits)) - 1)\n e >>= (-nBits)\n nBits += mLen\n for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n if (e === 0) {\n e = 1 - eBias\n } else if (e === eMax) {\n return m ? NaN : ((s ? -1 : 1) * Infinity)\n } else {\n m = m + Math.pow(2, mLen)\n e = e - eBias\n }\n return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n var e, m, c\n var eLen = (nBytes * 8) - mLen - 1\n var eMax = (1 << eLen) - 1\n var eBias = eMax >> 1\n var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n var i = isLE ? 0 : (nBytes - 1)\n var d = isLE ? 1 : -1\n var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n value = Math.abs(value)\n\n if (isNaN(value) || value === Infinity) {\n m = isNaN(value) ? 1 : 0\n e = eMax\n } else {\n e = Math.floor(Math.log(value) / Math.LN2)\n if (value * (c = Math.pow(2, -e)) < 1) {\n e--\n c *= 2\n }\n if (e + eBias >= 1) {\n value += rt / c\n } else {\n value += rt * Math.pow(2, 1 - eBias)\n }\n if (value * c >= 2) {\n e++\n c /= 2\n }\n\n if (e + eBias >= eMax) {\n m = 0\n e = eMax\n } else if (e + eBias >= 1) {\n m = ((value * c) - 1) * Math.pow(2, mLen)\n e = e + eBias\n } else {\n m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n e = 0\n }\n }\n\n for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n e = (e << mLen) | m\n eLen += mLen\n for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n buffer[offset + i - d] |= s * 128\n}\n","var toString = {}.toString;\n\nmodule.exports = Array.isArray || function (arr) {\n return toString.call(arr) == '[object Array]';\n};\n","'use strict';\nvar USE_TYPEDARRAY = (typeof Uint8Array !== 'undefined') && (typeof Uint16Array !== 'undefined') && (typeof Uint32Array !== 'undefined');\n\nvar pako = require(\"pako\");\nexports.uncompressInputType = USE_TYPEDARRAY ? \"uint8array\" : \"array\";\nexports.compressInputType = USE_TYPEDARRAY ? \"uint8array\" : \"array\";\n\nexports.magic = \"\\x08\\x00\";\nexports.compress = function(input, compressionOptions) {\n return pako.deflateRaw(input, {\n level : compressionOptions.level || -1 // default compression\n });\n};\nexports.uncompress = function(input) {\n return pako.inflateRaw(input);\n};\n","// Top level file is just a mixin of submodules & constants\n'use strict';\n\nvar assign = require('./lib/utils/common').assign;\n\nvar deflate = require('./lib/deflate');\nvar inflate = require('./lib/inflate');\nvar constants = require('./lib/zlib/constants');\n\nvar pako = {};\n\nassign(pako, deflate, inflate, constants);\n\nmodule.exports = pako;\n","'use strict';\n\n\nvar zlib_deflate = require('./zlib/deflate');\nvar utils = require('./utils/common');\nvar strings = require('./utils/strings');\nvar msg = require('./zlib/messages');\nvar ZStream = require('./zlib/zstream');\n\nvar toString = Object.prototype.toString;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nvar Z_NO_FLUSH = 0;\nvar Z_FINISH = 4;\n\nvar Z_OK = 0;\nvar Z_STREAM_END = 1;\nvar Z_SYNC_FLUSH = 2;\n\nvar Z_DEFAULT_COMPRESSION = -1;\n\nvar Z_DEFAULT_STRATEGY = 0;\n\nvar Z_DEFLATED = 8;\n\n/* ===========================================================================*/\n\n\n/**\n * class Deflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[deflate]],\n * [[deflateRaw]] and [[gzip]].\n **/\n\n/* internal\n * Deflate.chunks -> Array\n *\n * Chunks of output data, if [[Deflate#onData]] not overridden.\n **/\n\n/**\n * Deflate.result -> Uint8Array|Array\n *\n * Compressed result, generated by default [[Deflate#onData]]\n * and [[Deflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Deflate#push]] with `Z_FINISH` / `true` param) or if you\n * push a chunk with explicit flush (call [[Deflate#push]] with\n * `Z_SYNC_FLUSH` param).\n **/\n\n/**\n * Deflate.err -> Number\n *\n * Error code after deflate finished. 0 (Z_OK) on success.\n * You will not need it in real life, because deflate errors\n * are possible only on wrong options or bad `onData` / `onEnd`\n * custom handlers.\n **/\n\n/**\n * Deflate.msg -> String\n *\n * Error message, if [[Deflate.err]] != 0\n **/\n\n\n/**\n * new Deflate(options)\n * - options (Object): zlib deflate options.\n *\n * Creates new deflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `level`\n * - `windowBits`\n * - `memLevel`\n * - `strategy`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw deflate\n * - `gzip` (Boolean) - create gzip wrapper\n * - `to` (String) - if equal to 'string', then result will be \"binary string\"\n * (each char code [0..255])\n * - `header` (Object) - custom header for gzip\n * - `text` (Boolean) - true if compressed data believed to be text\n * - `time` (Number) - modification time, unix timestamp\n * - `os` (Number) - operation system code\n * - `extra` (Array) - array of bytes with extra data (max 65536)\n * - `name` (String) - file name (binary string)\n * - `comment` (String) - comment (binary string)\n * - `hcrc` (Boolean) - true if header crc should be added\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])\n * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * var deflate = new pako.Deflate({ level: 3});\n *\n * deflate.push(chunk1, false);\n * deflate.push(chunk2, true); // true -> last chunk\n *\n * if (deflate.err) { throw new Error(deflate.err); }\n *\n * console.log(deflate.result);\n * ```\n **/\nfunction Deflate(options) {\n if (!(this instanceof Deflate)) return new Deflate(options);\n\n this.options = utils.assign({\n level: Z_DEFAULT_COMPRESSION,\n method: Z_DEFLATED,\n chunkSize: 16384,\n windowBits: 15,\n memLevel: 8,\n strategy: Z_DEFAULT_STRATEGY,\n to: ''\n }, options || {});\n\n var opt = this.options;\n\n if (opt.raw && (opt.windowBits > 0)) {\n opt.windowBits = -opt.windowBits;\n }\n\n else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {\n opt.windowBits += 16;\n }\n\n this.err = 0; // error code, if happens (0 = Z_OK)\n this.msg = ''; // error message\n this.ended = false; // used to avoid multiple onEnd() calls\n this.chunks = []; // chunks of compressed data\n\n this.strm = new ZStream();\n this.strm.avail_out = 0;\n\n var status = zlib_deflate.deflateInit2(\n this.strm,\n opt.level,\n opt.method,\n opt.windowBits,\n opt.memLevel,\n opt.strategy\n );\n\n if (status !== Z_OK) {\n throw new Error(msg[status]);\n }\n\n if (opt.header) {\n zlib_deflate.deflateSetHeader(this.strm, opt.header);\n }\n\n if (opt.dictionary) {\n var dict;\n // Convert data if needed\n if (typeof opt.dictionary === 'string') {\n // If we need to compress text, change encoding to utf8.\n dict = strings.string2buf(opt.dictionary);\n } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {\n dict = new Uint8Array(opt.dictionary);\n } else {\n dict = opt.dictionary;\n }\n\n status = zlib_deflate.deflateSetDictionary(this.strm, dict);\n\n if (status !== Z_OK) {\n throw new Error(msg[status]);\n }\n\n this._dict_set = true;\n }\n}\n\n/**\n * Deflate#push(data[, mode]) -> Boolean\n * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be\n * converted to utf8 byte sequence.\n * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.\n * See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.\n *\n * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with\n * new compressed chunks. Returns `true` on success. The last data block must have\n * mode Z_FINISH (or `true`). That will flush internal pending buffers and call\n * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you\n * can use mode Z_SYNC_FLUSH, keeping the compression context.\n *\n * On fail call [[Deflate#onEnd]] with error code and return false.\n *\n * We strongly recommend to use `Uint8Array` on input for best speed (output\n * array format is detected automatically). Also, don't skip last param and always\n * use the same type in your code (boolean or number). That will improve JS speed.\n *\n * For regular `Array`-s make sure all elements are [0..255].\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true); // push last chunk\n * ```\n **/\nDeflate.prototype.push = function (data, mode) {\n var strm = this.strm;\n var chunkSize = this.options.chunkSize;\n var status, _mode;\n\n if (this.ended) { return false; }\n\n _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH);\n\n // Convert data if needed\n if (typeof data === 'string') {\n // If we need to compress text, change encoding to utf8.\n strm.input = strings.string2buf(data);\n } else if (toString.call(data) === '[object ArrayBuffer]') {\n strm.input = new Uint8Array(data);\n } else {\n strm.input = data;\n }\n\n strm.next_in = 0;\n strm.avail_in = strm.input.length;\n\n do {\n if (strm.avail_out === 0) {\n strm.output = new utils.Buf8(chunkSize);\n strm.next_out = 0;\n strm.avail_out = chunkSize;\n }\n status = zlib_deflate.deflate(strm, _mode); /* no bad return value */\n\n if (status !== Z_STREAM_END && status !== Z_OK) {\n this.onEnd(status);\n this.ended = true;\n return false;\n }\n if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) {\n if (this.options.to === 'string') {\n this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out)));\n } else {\n this.onData(utils.shrinkBuf(strm.output, strm.next_out));\n }\n }\n } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END);\n\n // Finalize on the last chunk.\n if (_mode === Z_FINISH) {\n status = zlib_deflate.deflateEnd(this.strm);\n this.onEnd(status);\n this.ended = true;\n return status === Z_OK;\n }\n\n // callback interim results if Z_SYNC_FLUSH.\n if (_mode === Z_SYNC_FLUSH) {\n this.onEnd(Z_OK);\n strm.avail_out = 0;\n return true;\n }\n\n return true;\n};\n\n\n/**\n * Deflate#onData(chunk) -> Void\n * - chunk (Uint8Array|Array|String): output data. Type of array depends\n * on js engine support. When string output requested, each chunk\n * will be string.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nDeflate.prototype.onData = function (chunk) {\n this.chunks.push(chunk);\n};\n\n\n/**\n * Deflate#onEnd(status) -> Void\n * - status (Number): deflate status. 0 (Z_OK) on success,\n * other if not.\n *\n * Called once after you tell deflate that the input stream is\n * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)\n * or if an error happened. By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nDeflate.prototype.onEnd = function (status) {\n // On success - join\n if (status === Z_OK) {\n if (this.options.to === 'string') {\n this.result = this.chunks.join('');\n } else {\n this.result = utils.flattenChunks(this.chunks);\n }\n }\n this.chunks = [];\n this.err = status;\n this.msg = this.strm.msg;\n};\n\n\n/**\n * deflate(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * Compress `data` with deflate algorithm and `options`.\n *\n * Supported options are:\n *\n * - level\n * - windowBits\n * - memLevel\n * - strategy\n * - dictionary\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n * negative windowBits implicitly.\n * - `to` (String) - if equal to 'string', then result will be \"binary string\"\n * (each char code [0..255])\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n * , data = Uint8Array([1,2,3,4,5,6,7,8,9]);\n *\n * console.log(pako.deflate(data));\n * ```\n **/\nfunction deflate(input, options) {\n var deflator = new Deflate(options);\n\n deflator.push(input, true);\n\n // That will never happens, if you don't cheat with options :)\n if (deflator.err) { throw deflator.msg || msg[deflator.err]; }\n\n return deflator.result;\n}\n\n\n/**\n * deflateRaw(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction deflateRaw(input, options) {\n options = options || {};\n options.raw = true;\n return deflate(input, options);\n}\n\n\n/**\n * gzip(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but create gzip wrapper instead of\n * deflate one.\n **/\nfunction gzip(input, options) {\n options = options || {};\n options.gzip = true;\n return deflate(input, options);\n}\n\n\nexports.Deflate = Deflate;\nexports.deflate = deflate;\nexports.deflateRaw = deflateRaw;\nexports.gzip = gzip;\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar utils = require('../utils/common');\nvar trees = require('./trees');\nvar adler32 = require('./adler32');\nvar crc32 = require('./crc32');\nvar msg = require('./messages');\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n/* Allowed flush values; see deflate() and inflate() below for details */\nvar Z_NO_FLUSH = 0;\nvar Z_PARTIAL_FLUSH = 1;\n//var Z_SYNC_FLUSH = 2;\nvar Z_FULL_FLUSH = 3;\nvar Z_FINISH = 4;\nvar Z_BLOCK = 5;\n//var Z_TREES = 6;\n\n\n/* Return codes for the compression/decompression functions. Negative values\n * are errors, positive values are used for special but normal events.\n */\nvar Z_OK = 0;\nvar Z_STREAM_END = 1;\n//var Z_NEED_DICT = 2;\n//var Z_ERRNO = -1;\nvar Z_STREAM_ERROR = -2;\nvar Z_DATA_ERROR = -3;\n//var Z_MEM_ERROR = -4;\nvar Z_BUF_ERROR = -5;\n//var Z_VERSION_ERROR = -6;\n\n\n/* compression levels */\n//var Z_NO_COMPRESSION = 0;\n//var Z_BEST_SPEED = 1;\n//var Z_BEST_COMPRESSION = 9;\nvar Z_DEFAULT_COMPRESSION = -1;\n\n\nvar Z_FILTERED = 1;\nvar Z_HUFFMAN_ONLY = 2;\nvar Z_RLE = 3;\nvar Z_FIXED = 4;\nvar Z_DEFAULT_STRATEGY = 0;\n\n/* Possible values of the data_type field (though see inflate()) */\n//var Z_BINARY = 0;\n//var Z_TEXT = 1;\n//var Z_ASCII = 1; // = Z_TEXT\nvar Z_UNKNOWN = 2;\n\n\n/* The deflate compression method */\nvar Z_DEFLATED = 8;\n\n/*============================================================================*/\n\n\nvar MAX_MEM_LEVEL = 9;\n/* Maximum value for memLevel in deflateInit2 */\nvar MAX_WBITS = 15;\n/* 32K LZ77 window */\nvar DEF_MEM_LEVEL = 8;\n\n\nvar LENGTH_CODES = 29;\n/* number of length codes, not counting the special END_BLOCK code */\nvar LITERALS = 256;\n/* number of literal bytes 0..255 */\nvar L_CODES = LITERALS + 1 + LENGTH_CODES;\n/* number of Literal or Length codes, including the END_BLOCK code */\nvar D_CODES = 30;\n/* number of distance codes */\nvar BL_CODES = 19;\n/* number of codes used to transfer the bit lengths */\nvar HEAP_SIZE = 2 * L_CODES + 1;\n/* maximum heap size */\nvar MAX_BITS = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nvar MIN_MATCH = 3;\nvar MAX_MATCH = 258;\nvar MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);\n\nvar PRESET_DICT = 0x20;\n\nvar INIT_STATE = 42;\nvar EXTRA_STATE = 69;\nvar NAME_STATE = 73;\nvar COMMENT_STATE = 91;\nvar HCRC_STATE = 103;\nvar BUSY_STATE = 113;\nvar FINISH_STATE = 666;\n\nvar BS_NEED_MORE = 1; /* block not completed, need more input or more output */\nvar BS_BLOCK_DONE = 2; /* block flush performed */\nvar BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */\nvar BS_FINISH_DONE = 4; /* finish done, accept no more input or output */\n\nvar OS_CODE = 0x03; // Unix :) . Don't detect, use this default.\n\nfunction err(strm, errorCode) {\n strm.msg = msg[errorCode];\n return errorCode;\n}\n\nfunction rank(f) {\n return ((f) << 1) - ((f) > 4 ? 9 : 0);\n}\n\nfunction zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }\n\n\n/* =========================================================================\n * Flush as much pending output as possible. All deflate() output goes\n * through this function so some applications may wish to modify it\n * to avoid allocating a large strm->output buffer and copying into it.\n * (See also read_buf()).\n */\nfunction flush_pending(strm) {\n var s = strm.state;\n\n //_tr_flush_bits(s);\n var len = s.pending;\n if (len > strm.avail_out) {\n len = strm.avail_out;\n }\n if (len === 0) { return; }\n\n utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);\n strm.next_out += len;\n s.pending_out += len;\n strm.total_out += len;\n strm.avail_out -= len;\n s.pending -= len;\n if (s.pending === 0) {\n s.pending_out = 0;\n }\n}\n\n\nfunction flush_block_only(s, last) {\n trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);\n s.block_start = s.strstart;\n flush_pending(s.strm);\n}\n\n\nfunction put_byte(s, b) {\n s.pending_buf[s.pending++] = b;\n}\n\n\n/* =========================================================================\n * Put a short in the pending buffer. The 16-bit value is put in MSB order.\n * IN assertion: the stream state is correct and there is enough room in\n * pending_buf.\n */\nfunction putShortMSB(s, b) {\n// put_byte(s, (Byte)(b >> 8));\n// put_byte(s, (Byte)(b & 0xff));\n s.pending_buf[s.pending++] = (b >>> 8) & 0xff;\n s.pending_buf[s.pending++] = b & 0xff;\n}\n\n\n/* ===========================================================================\n * Read a new buffer from the current input stream, update the adler32\n * and total number of bytes read. All deflate() input goes through\n * this function so some applications may wish to modify it to avoid\n * allocating a large strm->input buffer and copying from it.\n * (See also flush_pending()).\n */\nfunction read_buf(strm, buf, start, size) {\n var len = strm.avail_in;\n\n if (len > size) { len = size; }\n if (len === 0) { return 0; }\n\n strm.avail_in -= len;\n\n // zmemcpy(buf, strm->next_in, len);\n utils.arraySet(buf, strm.input, strm.next_in, len, start);\n if (strm.state.wrap === 1) {\n strm.adler = adler32(strm.adler, buf, len, start);\n }\n\n else if (strm.state.wrap === 2) {\n strm.adler = crc32(strm.adler, buf, len, start);\n }\n\n strm.next_in += len;\n strm.total_in += len;\n\n return len;\n}\n\n\n/* ===========================================================================\n * Set match_start to the longest match starting at the given string and\n * return its length. Matches shorter or equal to prev_length are discarded,\n * in which case the result is equal to prev_length and match_start is\n * garbage.\n * IN assertions: cur_match is the head of the hash chain for the current\n * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1\n * OUT assertion: the match length is not greater than s->lookahead.\n */\nfunction longest_match(s, cur_match) {\n var chain_length = s.max_chain_length; /* max hash chain length */\n var scan = s.strstart; /* current string */\n var match; /* matched string */\n var len; /* length of current match */\n var best_len = s.prev_length; /* best match length so far */\n var nice_match = s.nice_match; /* stop if match long enough */\n var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?\n s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;\n\n var _win = s.window; // shortcut\n\n var wmask = s.w_mask;\n var prev = s.prev;\n\n /* Stop when cur_match becomes <= limit. To simplify the code,\n * we prevent matches with the string of window index 0.\n */\n\n var strend = s.strstart + MAX_MATCH;\n var scan_end1 = _win[scan + best_len - 1];\n var scan_end = _win[scan + best_len];\n\n /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.\n * It is easy to get rid of this optimization if necessary.\n */\n // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, \"Code too clever\");\n\n /* Do not waste too much time if we already have a good match: */\n if (s.prev_length >= s.good_match) {\n chain_length >>= 2;\n }\n /* Do not look for matches beyond the end of the input. This is necessary\n * to make deflate deterministic.\n */\n if (nice_match > s.lookahead) { nice_match = s.lookahead; }\n\n // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, \"need lookahead\");\n\n do {\n // Assert(cur_match < s->strstart, \"no future\");\n match = cur_match;\n\n /* Skip to next match if the match length cannot increase\n * or if the match length is less than 2. Note that the checks below\n * for insufficient lookahead only occur occasionally for performance\n * reasons. Therefore uninitialized memory will be accessed, and\n * conditional jumps will be made that depend on those values.\n * However the length of the match is limited to the lookahead, so\n * the output of deflate is not affected by the uninitialized values.\n */\n\n if (_win[match + best_len] !== scan_end ||\n _win[match + best_len - 1] !== scan_end1 ||\n _win[match] !== _win[scan] ||\n _win[++match] !== _win[scan + 1]) {\n continue;\n }\n\n /* The check at best_len-1 can be removed because it will be made\n * again later. (This heuristic is not always a win.)\n * It is not necessary to compare scan[2] and match[2] since they\n * are always equal when the other bytes match, given that\n * the hash keys are equal and that HASH_BITS >= 8.\n */\n scan += 2;\n match++;\n // Assert(*scan == *match, \"match[2]?\");\n\n /* We check for insufficient lookahead only every 8th comparison;\n * the 256th check will be made at strstart+258.\n */\n do {\n /*jshint noempty:false*/\n } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n scan < strend);\n\n // Assert(scan <= s->window+(unsigned)(s->window_size-1), \"wild scan\");\n\n len = MAX_MATCH - (strend - scan);\n scan = strend - MAX_MATCH;\n\n if (len > best_len) {\n s.match_start = cur_match;\n best_len = len;\n if (len >= nice_match) {\n break;\n }\n scan_end1 = _win[scan + best_len - 1];\n scan_end = _win[scan + best_len];\n }\n } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);\n\n if (best_len <= s.lookahead) {\n return best_len;\n }\n return s.lookahead;\n}\n\n\n/* ===========================================================================\n * Fill the window when the lookahead becomes insufficient.\n * Updates strstart and lookahead.\n *\n * IN assertion: lookahead < MIN_LOOKAHEAD\n * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD\n * At least one byte has been read, or avail_in == 0; reads are\n * performed for at least two bytes (required for the zip translate_eol\n * option -- not supported here).\n */\nfunction fill_window(s) {\n var _w_size = s.w_size;\n var p, n, m, more, str;\n\n //Assert(s->lookahead < MIN_LOOKAHEAD, \"already enough lookahead\");\n\n do {\n more = s.window_size - s.lookahead - s.strstart;\n\n // JS ints have 32 bit, block below not needed\n /* Deal with !@#$% 64K limit: */\n //if (sizeof(int) <= 2) {\n // if (more == 0 && s->strstart == 0 && s->lookahead == 0) {\n // more = wsize;\n //\n // } else if (more == (unsigned)(-1)) {\n // /* Very unlikely, but possible on 16 bit machine if\n // * strstart == 0 && lookahead == 1 (input done a byte at time)\n // */\n // more--;\n // }\n //}\n\n\n /* If the window is almost full and there is insufficient lookahead,\n * move the upper half to the lower one to make room in the upper half.\n */\n if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {\n\n utils.arraySet(s.window, s.window, _w_size, _w_size, 0);\n s.match_start -= _w_size;\n s.strstart -= _w_size;\n /* we now have strstart >= MAX_DIST */\n s.block_start -= _w_size;\n\n /* Slide the hash table (could be avoided with 32 bit values\n at the expense of memory usage). We slide even when level == 0\n to keep the hash table consistent if we switch back to level > 0\n later. (Using level 0 permanently is not an optimal usage of\n zlib, so we don't care about this pathological case.)\n */\n\n n = s.hash_size;\n p = n;\n do {\n m = s.head[--p];\n s.head[p] = (m >= _w_size ? m - _w_size : 0);\n } while (--n);\n\n n = _w_size;\n p = n;\n do {\n m = s.prev[--p];\n s.prev[p] = (m >= _w_size ? m - _w_size : 0);\n /* If n is not on any hash chain, prev[n] is garbage but\n * its value will never be used.\n */\n } while (--n);\n\n more += _w_size;\n }\n if (s.strm.avail_in === 0) {\n break;\n }\n\n /* If there was no sliding:\n * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&\n * more == window_size - lookahead - strstart\n * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)\n * => more >= window_size - 2*WSIZE + 2\n * In the BIG_MEM or MMAP case (not yet supported),\n * window_size == input_size + MIN_LOOKAHEAD &&\n * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.\n * Otherwise, window_size == 2*WSIZE so more >= 2.\n * If there was sliding, more >= WSIZE. So in all cases, more >= 2.\n */\n //Assert(more >= 2, \"more < 2\");\n n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);\n s.lookahead += n;\n\n /* Initialize the hash value now that we have some input: */\n if (s.lookahead + s.insert >= MIN_MATCH) {\n str = s.strstart - s.insert;\n s.ins_h = s.window[str];\n\n /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;\n//#if MIN_MATCH != 3\n// Call update_hash() MIN_MATCH-3 more times\n//#endif\n while (s.insert) {\n /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;\n\n s.prev[str & s.w_mask] = s.head[s.ins_h];\n s.head[s.ins_h] = str;\n str++;\n s.insert--;\n if (s.lookahead + s.insert < MIN_MATCH) {\n break;\n }\n }\n }\n /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,\n * but this is not important since only literal bytes will be emitted.\n */\n\n } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);\n\n /* If the WIN_INIT bytes after the end of the current data have never been\n * written, then zero those bytes in order to avoid memory check reports of\n * the use of uninitialized (or uninitialised as Julian writes) bytes by\n * the longest match routines. Update the high water mark for the next\n * time through here. WIN_INIT is set to MAX_MATCH since the longest match\n * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.\n */\n// if (s.high_water < s.window_size) {\n// var curr = s.strstart + s.lookahead;\n// var init = 0;\n//\n// if (s.high_water < curr) {\n// /* Previous high water mark below current data -- zero WIN_INIT\n// * bytes or up to end of window, whichever is less.\n// */\n// init = s.window_size - curr;\n// if (init > WIN_INIT)\n// init = WIN_INIT;\n// zmemzero(s->window + curr, (unsigned)init);\n// s->high_water = curr + init;\n// }\n// else if (s->high_water < (ulg)curr + WIN_INIT) {\n// /* High water mark at or above current data, but below current data\n// * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up\n// * to end of window, whichever is less.\n// */\n// init = (ulg)curr + WIN_INIT - s->high_water;\n// if (init > s->window_size - s->high_water)\n// init = s->window_size - s->high_water;\n// zmemzero(s->window + s->high_water, (unsigned)init);\n// s->high_water += init;\n// }\n// }\n//\n// Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,\n// \"not enough room for search\");\n}\n\n/* ===========================================================================\n * Copy without compression as much as possible from the input stream, return\n * the current block state.\n * This function does not insert new strings in the dictionary since\n * uncompressible data is probably not useful. This function is used\n * only for the level=0 compression option.\n * NOTE: this function should be optimized to avoid extra copying from\n * window to pending_buf.\n */\nfunction deflate_stored(s, flush) {\n /* Stored blocks are limited to 0xffff bytes, pending_buf is limited\n * to pending_buf_size, and each stored block has a 5 byte header:\n */\n var max_block_size = 0xffff;\n\n if (max_block_size > s.pending_buf_size - 5) {\n max_block_size = s.pending_buf_size - 5;\n }\n\n /* Copy as much as possible from input to output: */\n for (;;) {\n /* Fill the window as much as possible: */\n if (s.lookahead <= 1) {\n\n //Assert(s->strstart < s->w_size+MAX_DIST(s) ||\n // s->block_start >= (long)s->w_size, \"slide too late\");\n// if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||\n// s.block_start >= s.w_size)) {\n// throw new Error(\"slide too late\");\n// }\n\n fill_window(s);\n if (s.lookahead === 0 && flush === Z_NO_FLUSH) {\n return BS_NEED_MORE;\n }\n\n if (s.lookahead === 0) {\n break;\n }\n /* flush the current block */\n }\n //Assert(s->block_start >= 0L, \"block gone\");\n// if (s.block_start < 0) throw new Error(\"block gone\");\n\n s.strstart += s.lookahead;\n s.lookahead = 0;\n\n /* Emit a stored block if pending_buf will be full: */\n var max_start = s.block_start + max_block_size;\n\n if (s.strstart === 0 || s.strstart >= max_start) {\n /* strstart == 0 is possible when wraparound on 16-bit machine */\n s.lookahead = s.strstart - max_start;\n s.strstart = max_start;\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n\n\n }\n /* Flush if we may have to slide, otherwise block_start may become\n * negative and the data will be gone:\n */\n if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n }\n\n s.insert = 0;\n\n if (flush === Z_FINISH) {\n /*** FLUSH_BLOCK(s, 1); ***/\n flush_block_only(s, true);\n if (s.strm.avail_out === 0) {\n return BS_FINISH_STARTED;\n }\n /***/\n return BS_FINISH_DONE;\n }\n\n if (s.strstart > s.block_start) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n\n return BS_NEED_MORE;\n}\n\n/* ===========================================================================\n * Compress as much as possible from the input stream, return the current\n * block state.\n * This function does not perform lazy evaluation of matches and inserts\n * new strings in the dictionary only for unmatched strings or for short\n * matches. It is used only for the fast compression options.\n */\nfunction deflate_fast(s, flush) {\n var hash_head; /* head of the hash chain */\n var bflush; /* set if current block must be flushed */\n\n for (;;) {\n /* Make sure that we always have enough lookahead, except\n * at the end of the input file. We need MAX_MATCH bytes\n * for the next match, plus MIN_MATCH bytes to insert the\n * string following the next match.\n */\n if (s.lookahead < MIN_LOOKAHEAD) {\n fill_window(s);\n if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {\n return BS_NEED_MORE;\n }\n if (s.lookahead === 0) {\n break; /* flush the current block */\n }\n }\n\n /* Insert the string window[strstart .. strstart+2] in the\n * dictionary, and set hash_head to the head of the hash chain:\n */\n hash_head = 0/*NIL*/;\n if (s.lookahead >= MIN_MATCH) {\n /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n s.head[s.ins_h] = s.strstart;\n /***/\n }\n\n /* Find the longest match, discarding those <= prev_length.\n * At this point we have always match_length < MIN_MATCH\n */\n if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {\n /* To simplify the code, we prevent matches with the string\n * of window index 0 (in particular we have to avoid a match\n * of the string with itself at the start of the input file).\n */\n s.match_length = longest_match(s, hash_head);\n /* longest_match() sets match_start */\n }\n if (s.match_length >= MIN_MATCH) {\n // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only\n\n /*** _tr_tally_dist(s, s.strstart - s.match_start,\n s.match_length - MIN_MATCH, bflush); ***/\n bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);\n\n s.lookahead -= s.match_length;\n\n /* Insert new strings in the hash table only if the match length\n * is not too large. This saves time but degrades compression.\n */\n if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {\n s.match_length--; /* string at strstart already in table */\n do {\n s.strstart++;\n /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n s.head[s.ins_h] = s.strstart;\n /***/\n /* strstart never exceeds WSIZE-MAX_MATCH, so there are\n * always MIN_MATCH bytes ahead.\n */\n } while (--s.match_length !== 0);\n s.strstart++;\n } else\n {\n s.strstart += s.match_length;\n s.match_length = 0;\n s.ins_h = s.window[s.strstart];\n /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;\n\n//#if MIN_MATCH != 3\n// Call UPDATE_HASH() MIN_MATCH-3 more times\n//#endif\n /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not\n * matter since it will be recomputed at next deflate call.\n */\n }\n } else {\n /* No match, output a literal byte */\n //Tracevv((stderr,\"%c\", s.window[s.strstart]));\n /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n bflush = trees._tr_tally(s, 0, s.window[s.strstart]);\n\n s.lookahead--;\n s.strstart++;\n }\n if (bflush) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n }\n s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);\n if (flush === Z_FINISH) {\n /*** FLUSH_BLOCK(s, 1); ***/\n flush_block_only(s, true);\n if (s.strm.avail_out === 0) {\n return BS_FINISH_STARTED;\n }\n /***/\n return BS_FINISH_DONE;\n }\n if (s.last_lit) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n return BS_BLOCK_DONE;\n}\n\n/* ===========================================================================\n * Same as above, but achieves better compression. We use a lazy\n * evaluation for matches: a match is finally adopted only if there is\n * no better match at the next window position.\n */\nfunction deflate_slow(s, flush) {\n var hash_head; /* head of hash chain */\n var bflush; /* set if current block must be flushed */\n\n var max_insert;\n\n /* Process the input block. */\n for (;;) {\n /* Make sure that we always have enough lookahead, except\n * at the end of the input file. We need MAX_MATCH bytes\n * for the next match, plus MIN_MATCH bytes to insert the\n * string following the next match.\n */\n if (s.lookahead < MIN_LOOKAHEAD) {\n fill_window(s);\n if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {\n return BS_NEED_MORE;\n }\n if (s.lookahead === 0) { break; } /* flush the current block */\n }\n\n /* Insert the string window[strstart .. strstart+2] in the\n * dictionary, and set hash_head to the head of the hash chain:\n */\n hash_head = 0/*NIL*/;\n if (s.lookahead >= MIN_MATCH) {\n /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n s.head[s.ins_h] = s.strstart;\n /***/\n }\n\n /* Find the longest match, discarding those <= prev_length.\n */\n s.prev_length = s.match_length;\n s.prev_match = s.match_start;\n s.match_length = MIN_MATCH - 1;\n\n if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&\n s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {\n /* To simplify the code, we prevent matches with the string\n * of window index 0 (in particular we have to avoid a match\n * of the string with itself at the start of the input file).\n */\n s.match_length = longest_match(s, hash_head);\n /* longest_match() sets match_start */\n\n if (s.match_length <= 5 &&\n (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {\n\n /* If prev_match is also MIN_MATCH, match_start is garbage\n * but we will ignore the current match anyway.\n */\n s.match_length = MIN_MATCH - 1;\n }\n }\n /* If there was a match at the previous step and the current\n * match is not better, output the previous match:\n */\n if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {\n max_insert = s.strstart + s.lookahead - MIN_MATCH;\n /* Do not insert strings in hash table beyond this. */\n\n //check_match(s, s.strstart-1, s.prev_match, s.prev_length);\n\n /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,\n s.prev_length - MIN_MATCH, bflush);***/\n bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);\n /* Insert in hash table all strings up to the end of the match.\n * strstart-1 and strstart are already inserted. If there is not\n * enough lookahead, the last two strings are not inserted in\n * the hash table.\n */\n s.lookahead -= s.prev_length - 1;\n s.prev_length -= 2;\n do {\n if (++s.strstart <= max_insert) {\n /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n s.head[s.ins_h] = s.strstart;\n /***/\n }\n } while (--s.prev_length !== 0);\n s.match_available = 0;\n s.match_length = MIN_MATCH - 1;\n s.strstart++;\n\n if (bflush) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n\n } else if (s.match_available) {\n /* If there was no match at the previous position, output a\n * single literal. If there was a match but the current match\n * is longer, truncate the previous match to a single literal.\n */\n //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);\n\n if (bflush) {\n /*** FLUSH_BLOCK_ONLY(s, 0) ***/\n flush_block_only(s, false);\n /***/\n }\n s.strstart++;\n s.lookahead--;\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n } else {\n /* There is no previous match to compare with, wait for\n * the next step to decide.\n */\n s.match_available = 1;\n s.strstart++;\n s.lookahead--;\n }\n }\n //Assert (flush != Z_NO_FLUSH, \"no flush?\");\n if (s.match_available) {\n //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);\n\n s.match_available = 0;\n }\n s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;\n if (flush === Z_FINISH) {\n /*** FLUSH_BLOCK(s, 1); ***/\n flush_block_only(s, true);\n if (s.strm.avail_out === 0) {\n return BS_FINISH_STARTED;\n }\n /***/\n return BS_FINISH_DONE;\n }\n if (s.last_lit) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n\n return BS_BLOCK_DONE;\n}\n\n\n/* ===========================================================================\n * For Z_RLE, simply look for runs of bytes, generate matches only of distance\n * one. Do not maintain a hash table. (It will be regenerated if this run of\n * deflate switches away from Z_RLE.)\n */\nfunction deflate_rle(s, flush) {\n var bflush; /* set if current block must be flushed */\n var prev; /* byte at distance one to match */\n var scan, strend; /* scan goes up to strend for length of run */\n\n var _win = s.window;\n\n for (;;) {\n /* Make sure that we always have enough lookahead, except\n * at the end of the input file. We need MAX_MATCH bytes\n * for the longest run, plus one for the unrolled loop.\n */\n if (s.lookahead <= MAX_MATCH) {\n fill_window(s);\n if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {\n return BS_NEED_MORE;\n }\n if (s.lookahead === 0) { break; } /* flush the current block */\n }\n\n /* See how many times the previous byte repeats */\n s.match_length = 0;\n if (s.lookahead >= MIN_MATCH && s.strstart > 0) {\n scan = s.strstart - 1;\n prev = _win[scan];\n if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {\n strend = s.strstart + MAX_MATCH;\n do {\n /*jshint noempty:false*/\n } while (prev === _win[++scan] && prev === _win[++scan] &&\n prev === _win[++scan] && prev === _win[++scan] &&\n prev === _win[++scan] && prev === _win[++scan] &&\n prev === _win[++scan] && prev === _win[++scan] &&\n scan < strend);\n s.match_length = MAX_MATCH - (strend - scan);\n if (s.match_length > s.lookahead) {\n s.match_length = s.lookahead;\n }\n }\n //Assert(scan <= s->window+(uInt)(s->window_size-1), \"wild scan\");\n }\n\n /* Emit match if have run of MIN_MATCH or longer, else emit literal */\n if (s.match_length >= MIN_MATCH) {\n //check_match(s, s.strstart, s.strstart - 1, s.match_length);\n\n /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/\n bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);\n\n s.lookahead -= s.match_length;\n s.strstart += s.match_length;\n s.match_length = 0;\n } else {\n /* No match, output a literal byte */\n //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n bflush = trees._tr_tally(s, 0, s.window[s.strstart]);\n\n s.lookahead--;\n s.strstart++;\n }\n if (bflush) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n }\n s.insert = 0;\n if (flush === Z_FINISH) {\n /*** FLUSH_BLOCK(s, 1); ***/\n flush_block_only(s, true);\n if (s.strm.avail_out === 0) {\n return BS_FINISH_STARTED;\n }\n /***/\n return BS_FINISH_DONE;\n }\n if (s.last_lit) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n return BS_BLOCK_DONE;\n}\n\n/* ===========================================================================\n * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table.\n * (It will be regenerated if this run of deflate switches away from Huffman.)\n */\nfunction deflate_huff(s, flush) {\n var bflush; /* set if current block must be flushed */\n\n for (;;) {\n /* Make sure that we have a literal to write. */\n if (s.lookahead === 0) {\n fill_window(s);\n if (s.lookahead === 0) {\n if (flush === Z_NO_FLUSH) {\n return BS_NEED_MORE;\n }\n break; /* flush the current block */\n }\n }\n\n /* Output a literal byte */\n s.match_length = 0;\n //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n bflush = trees._tr_tally(s, 0, s.window[s.strstart]);\n s.lookahead--;\n s.strstart++;\n if (bflush) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n }\n s.insert = 0;\n if (flush === Z_FINISH) {\n /*** FLUSH_BLOCK(s, 1); ***/\n flush_block_only(s, true);\n if (s.strm.avail_out === 0) {\n return BS_FINISH_STARTED;\n }\n /***/\n return BS_FINISH_DONE;\n }\n if (s.last_lit) {\n /*** FLUSH_BLOCK(s, 0); ***/\n flush_block_only(s, false);\n if (s.strm.avail_out === 0) {\n return BS_NEED_MORE;\n }\n /***/\n }\n return BS_BLOCK_DONE;\n}\n\n/* Values for max_lazy_match, good_match and max_chain_length, depending on\n * the desired pack level (0..9). The values given below have been tuned to\n * exclude worst case performance for pathological files. Better values may be\n * found for specific files.\n */\nfunction Config(good_length, max_lazy, nice_length, max_chain, func) {\n this.good_length = good_length;\n this.max_lazy = max_lazy;\n this.nice_length = nice_length;\n this.max_chain = max_chain;\n this.func = func;\n}\n\nvar configuration_table;\n\nconfiguration_table = [\n /* good lazy nice chain */\n new Config(0, 0, 0, 0, deflate_stored), /* 0 store only */\n new Config(4, 4, 8, 4, deflate_fast), /* 1 max speed, no lazy matches */\n new Config(4, 5, 16, 8, deflate_fast), /* 2 */\n new Config(4, 6, 32, 32, deflate_fast), /* 3 */\n\n new Config(4, 4, 16, 16, deflate_slow), /* 4 lazy matches */\n new Config(8, 16, 32, 32, deflate_slow), /* 5 */\n new Config(8, 16, 128, 128, deflate_slow), /* 6 */\n new Config(8, 32, 128, 256, deflate_slow), /* 7 */\n new Config(32, 128, 258, 1024, deflate_slow), /* 8 */\n new Config(32, 258, 258, 4096, deflate_slow) /* 9 max compression */\n];\n\n\n/* ===========================================================================\n * Initialize the \"longest match\" routines for a new zlib stream\n */\nfunction lm_init(s) {\n s.window_size = 2 * s.w_size;\n\n /*** CLEAR_HASH(s); ***/\n zero(s.head); // Fill with NIL (= 0);\n\n /* Set the default configuration parameters:\n */\n s.max_lazy_match = configuration_table[s.level].max_lazy;\n s.good_match = configuration_table[s.level].good_length;\n s.nice_match = configuration_table[s.level].nice_length;\n s.max_chain_length = configuration_table[s.level].max_chain;\n\n s.strstart = 0;\n s.block_start = 0;\n s.lookahead = 0;\n s.insert = 0;\n s.match_length = s.prev_length = MIN_MATCH - 1;\n s.match_available = 0;\n s.ins_h = 0;\n}\n\n\nfunction DeflateState() {\n this.strm = null; /* pointer back to this zlib stream */\n this.status = 0; /* as the name implies */\n this.pending_buf = null; /* output still pending */\n this.pending_buf_size = 0; /* size of pending_buf */\n this.pending_out = 0; /* next pending byte to output to the stream */\n this.pending = 0; /* nb of bytes in the pending buffer */\n this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */\n this.gzhead = null; /* gzip header information to write */\n this.gzindex = 0; /* where in extra, name, or comment */\n this.method = Z_DEFLATED; /* can only be DEFLATED */\n this.last_flush = -1; /* value of flush param for previous deflate call */\n\n this.w_size = 0; /* LZ77 window size (32K by default) */\n this.w_bits = 0; /* log2(w_size) (8..16) */\n this.w_mask = 0; /* w_size - 1 */\n\n this.window = null;\n /* Sliding window. Input bytes are read into the second half of the window,\n * and move to the first half later to keep a dictionary of at least wSize\n * bytes. With this organization, matches are limited to a distance of\n * wSize-MAX_MATCH bytes, but this ensures that IO is always\n * performed with a length multiple of the block size.\n */\n\n this.window_size = 0;\n /* Actual size of window: 2*wSize, except when the user input buffer\n * is directly used as sliding window.\n */\n\n this.prev = null;\n /* Link to older string with same hash index. To limit the size of this\n * array to 64K, this link is maintained only for the last 32K strings.\n * An index in this array is thus a window index modulo 32K.\n */\n\n this.head = null; /* Heads of the hash chains or NIL. */\n\n this.ins_h = 0; /* hash index of string to be inserted */\n this.hash_size = 0; /* number of elements in hash table */\n this.hash_bits = 0; /* log2(hash_size) */\n this.hash_mask = 0; /* hash_size-1 */\n\n this.hash_shift = 0;\n /* Number of bits by which ins_h must be shifted at each input\n * step. It must be such that after MIN_MATCH steps, the oldest\n * byte no longer takes part in the hash key, that is:\n * hash_shift * MIN_MATCH >= hash_bits\n */\n\n this.block_start = 0;\n /* Window position at the beginning of the current output block. Gets\n * negative when the window is moved backwards.\n */\n\n this.match_length = 0; /* length of best match */\n this.prev_match = 0; /* previous match */\n this.match_available = 0; /* set if previous match exists */\n this.strstart = 0; /* start of string to insert */\n this.match_start = 0; /* start of matching string */\n this.lookahead = 0; /* number of valid bytes ahead in window */\n\n this.prev_length = 0;\n /* Length of the best match at previous step. Matches not greater than this\n * are discarded. This is used in the lazy match evaluation.\n */\n\n this.max_chain_length = 0;\n /* To speed up deflation, hash chains are never searched beyond this\n * length. A higher limit improves compression ratio but degrades the\n * speed.\n */\n\n this.max_lazy_match = 0;\n /* Attempt to find a better match only when the current match is strictly\n * smaller than this value. This mechanism is used only for compression\n * levels >= 4.\n */\n // That's alias to max_lazy_match, don't use directly\n //this.max_insert_length = 0;\n /* Insert new strings in the hash table only if the match length is not\n * greater than this length. This saves time but degrades compression.\n * max_insert_length is used only for compression levels <= 3.\n */\n\n this.level = 0; /* compression level (1..9) */\n this.strategy = 0; /* favor or force Huffman coding*/\n\n this.good_match = 0;\n /* Use a faster search when the previous match is longer than this */\n\n this.nice_match = 0; /* Stop searching when current match exceeds this */\n\n /* used by trees.c: */\n\n /* Didn't use ct_data typedef below to suppress compiler warning */\n\n // struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */\n // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */\n // struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */\n\n // Use flat array of DOUBLE size, with interleaved fata,\n // because JS does not support effective\n this.dyn_ltree = new utils.Buf16(HEAP_SIZE * 2);\n this.dyn_dtree = new utils.Buf16((2 * D_CODES + 1) * 2);\n this.bl_tree = new utils.Buf16((2 * BL_CODES + 1) * 2);\n zero(this.dyn_ltree);\n zero(this.dyn_dtree);\n zero(this.bl_tree);\n\n this.l_desc = null; /* desc. for literal tree */\n this.d_desc = null; /* desc. for distance tree */\n this.bl_desc = null; /* desc. for bit length tree */\n\n //ush bl_count[MAX_BITS+1];\n this.bl_count = new utils.Buf16(MAX_BITS + 1);\n /* number of codes at each bit length for an optimal tree */\n\n //int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */\n this.heap = new utils.Buf16(2 * L_CODES + 1); /* heap used to build the Huffman trees */\n zero(this.heap);\n\n this.heap_len = 0; /* number of elements in the heap */\n this.heap_max = 0; /* element of largest frequency */\n /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.\n * The same heap array is used to build all trees.\n */\n\n this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1];\n zero(this.depth);\n /* Depth of each subtree used as tie breaker for trees of equal frequency\n */\n\n this.l_buf = 0; /* buffer index for literals or lengths */\n\n this.lit_bufsize = 0;\n /* Size of match buffer for literals/lengths. There are 4 reasons for\n * limiting lit_bufsize to 64K:\n * - frequencies can be kept in 16 bit counters\n * - if compression is not successful for the first block, all input\n * data is still in the window so we can still emit a stored block even\n * when input comes from standard input. (This can also be done for\n * all blocks if lit_bufsize is not greater than 32K.)\n * - if compression is not successful for a file smaller than 64K, we can\n * even emit a stored file instead of a stored block (saving 5 bytes).\n * This is applicable only for zip (not gzip or zlib).\n * - creating new Huffman trees less frequently may not provide fast\n * adaptation to changes in the input data statistics. (Take for\n * example a binary file with poorly compressible code followed by\n * a highly compressible string table.) Smaller buffer sizes give\n * fast adaptation but have of course the overhead of transmitting\n * trees more frequently.\n * - I can't count above 4\n */\n\n this.last_lit = 0; /* running index in l_buf */\n\n this.d_buf = 0;\n /* Buffer index for distances. To simplify the code, d_buf and l_buf have\n * the same number of elements. To use different lengths, an extra flag\n * array would be necessary.\n */\n\n this.opt_len = 0; /* bit length of current block with optimal trees */\n this.static_len = 0; /* bit length of current block with static trees */\n this.matches = 0; /* number of string matches in current block */\n this.insert = 0; /* bytes at end of window left to insert */\n\n\n this.bi_buf = 0;\n /* Output buffer. bits are inserted starting at the bottom (least\n * significant bits).\n */\n this.bi_valid = 0;\n /* Number of valid bits in bi_buf. All bits above the last valid bit\n * are always zero.\n */\n\n // Used for window memory init. We safely ignore it for JS. That makes\n // sense only for pointers and memory check tools.\n //this.high_water = 0;\n /* High water mark offset in window for initialized bytes -- bytes above\n * this are set to zero in order to avoid memory check warnings when\n * longest match routines access bytes past the input. This is then\n * updated to the new high water mark.\n */\n}\n\n\nfunction deflateResetKeep(strm) {\n var s;\n\n if (!strm || !strm.state) {\n return err(strm, Z_STREAM_ERROR);\n }\n\n strm.total_in = strm.total_out = 0;\n strm.data_type = Z_UNKNOWN;\n\n s = strm.state;\n s.pending = 0;\n s.pending_out = 0;\n\n if (s.wrap < 0) {\n s.wrap = -s.wrap;\n /* was made negative by deflate(..., Z_FINISH); */\n }\n s.status = (s.wrap ? INIT_STATE : BUSY_STATE);\n strm.adler = (s.wrap === 2) ?\n 0 // crc32(0, Z_NULL, 0)\n :\n 1; // adler32(0, Z_NULL, 0)\n s.last_flush = Z_NO_FLUSH;\n trees._tr_init(s);\n return Z_OK;\n}\n\n\nfunction deflateReset(strm) {\n var ret = deflateResetKeep(strm);\n if (ret === Z_OK) {\n lm_init(strm.state);\n }\n return ret;\n}\n\n\nfunction deflateSetHeader(strm, head) {\n if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }\n strm.state.gzhead = head;\n return Z_OK;\n}\n\n\nfunction deflateInit2(strm, level, method, windowBits, memLevel, strategy) {\n if (!strm) { // === Z_NULL\n return Z_STREAM_ERROR;\n }\n var wrap = 1;\n\n if (level === Z_DEFAULT_COMPRESSION) {\n level = 6;\n }\n\n if (windowBits < 0) { /* suppress zlib wrapper */\n wrap = 0;\n windowBits = -windowBits;\n }\n\n else if (windowBits > 15) {\n wrap = 2; /* write gzip wrapper instead */\n windowBits -= 16;\n }\n\n\n if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||\n windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||\n strategy < 0 || strategy > Z_FIXED) {\n return err(strm, Z_STREAM_ERROR);\n }\n\n\n if (windowBits === 8) {\n windowBits = 9;\n }\n /* until 256-byte window bug fixed */\n\n var s = new DeflateState();\n\n strm.state = s;\n s.strm = strm;\n\n s.wrap = wrap;\n s.gzhead = null;\n s.w_bits = windowBits;\n s.w_size = 1 << s.w_bits;\n s.w_mask = s.w_size - 1;\n\n s.hash_bits = memLevel + 7;\n s.hash_size = 1 << s.hash_bits;\n s.hash_mask = s.hash_size - 1;\n s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);\n\n s.window = new utils.Buf8(s.w_size * 2);\n s.head = new utils.Buf16(s.hash_size);\n s.prev = new utils.Buf16(s.w_size);\n\n // Don't need mem init magic for JS.\n //s.high_water = 0; /* nothing written to s->window yet */\n\n s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */\n\n s.pending_buf_size = s.lit_bufsize * 4;\n\n //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);\n //s->pending_buf = (uchf *) overlay;\n s.pending_buf = new utils.Buf8(s.pending_buf_size);\n\n // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)\n //s->d_buf = overlay + s->lit_bufsize/sizeof(ush);\n s.d_buf = 1 * s.lit_bufsize;\n\n //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;\n s.l_buf = (1 + 2) * s.lit_bufsize;\n\n s.level = level;\n s.strategy = strategy;\n s.method = method;\n\n return deflateReset(strm);\n}\n\nfunction deflateInit(strm, level) {\n return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);\n}\n\n\nfunction deflate(strm, flush) {\n var old_flush, s;\n var beg, val; // for gzip header write only\n\n if (!strm || !strm.state ||\n flush > Z_BLOCK || flush < 0) {\n return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;\n }\n\n s = strm.state;\n\n if (!strm.output ||\n (!strm.input && strm.avail_in !== 0) ||\n (s.status === FINISH_STATE && flush !== Z_FINISH)) {\n return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);\n }\n\n s.strm = strm; /* just in case */\n old_flush = s.last_flush;\n s.last_flush = flush;\n\n /* Write the header */\n if (s.status === INIT_STATE) {\n\n if (s.wrap === 2) { // GZIP header\n strm.adler = 0; //crc32(0L, Z_NULL, 0);\n put_byte(s, 31);\n put_byte(s, 139);\n put_byte(s, 8);\n if (!s.gzhead) { // s->gzhead == Z_NULL\n put_byte(s, 0);\n put_byte(s, 0);\n put_byte(s, 0);\n put_byte(s, 0);\n put_byte(s, 0);\n put_byte(s, s.level === 9 ? 2 :\n (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n 4 : 0));\n put_byte(s, OS_CODE);\n s.status = BUSY_STATE;\n }\n else {\n put_byte(s, (s.gzhead.text ? 1 : 0) +\n (s.gzhead.hcrc ? 2 : 0) +\n (!s.gzhead.extra ? 0 : 4) +\n (!s.gzhead.name ? 0 : 8) +\n (!s.gzhead.comment ? 0 : 16)\n );\n put_byte(s, s.gzhead.time & 0xff);\n put_byte(s, (s.gzhead.time >> 8) & 0xff);\n put_byte(s, (s.gzhead.time >> 16) & 0xff);\n put_byte(s, (s.gzhead.time >> 24) & 0xff);\n put_byte(s, s.level === 9 ? 2 :\n (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n 4 : 0));\n put_byte(s, s.gzhead.os & 0xff);\n if (s.gzhead.extra && s.gzhead.extra.length) {\n put_byte(s, s.gzhead.extra.length & 0xff);\n put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);\n }\n if (s.gzhead.hcrc) {\n strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);\n }\n s.gzindex = 0;\n s.status = EXTRA_STATE;\n }\n }\n else // DEFLATE header\n {\n var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;\n var level_flags = -1;\n\n if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {\n level_flags = 0;\n } else if (s.level < 6) {\n level_flags = 1;\n } else if (s.level === 6) {\n level_flags = 2;\n } else {\n level_flags = 3;\n }\n header |= (level_flags << 6);\n if (s.strstart !== 0) { header |= PRESET_DICT; }\n header += 31 - (header % 31);\n\n s.status = BUSY_STATE;\n putShortMSB(s, header);\n\n /* Save the adler32 of the preset dictionary: */\n if (s.strstart !== 0) {\n putShortMSB(s, strm.adler >>> 16);\n putShortMSB(s, strm.adler & 0xffff);\n }\n strm.adler = 1; // adler32(0L, Z_NULL, 0);\n }\n }\n\n//#ifdef GZIP\n if (s.status === EXTRA_STATE) {\n if (s.gzhead.extra/* != Z_NULL*/) {\n beg = s.pending; /* start of bytes to update crc */\n\n while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {\n if (s.pending === s.pending_buf_size) {\n if (s.gzhead.hcrc && s.pending > beg) {\n strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n }\n flush_pending(strm);\n beg = s.pending;\n if (s.pending === s.pending_buf_size) {\n break;\n }\n }\n put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);\n s.gzindex++;\n }\n if (s.gzhead.hcrc && s.pending > beg) {\n strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n }\n if (s.gzindex === s.gzhead.extra.length) {\n s.gzindex = 0;\n s.status = NAME_STATE;\n }\n }\n else {\n s.status = NAME_STATE;\n }\n }\n if (s.status === NAME_STATE) {\n if (s.gzhead.name/* != Z_NULL*/) {\n beg = s.pending; /* start of bytes to update crc */\n //int val;\n\n do {\n if (s.pending === s.pending_buf_size) {\n if (s.gzhead.hcrc && s.pending > beg) {\n strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n }\n flush_pending(strm);\n beg = s.pending;\n if (s.pending === s.pending_buf_size) {\n val = 1;\n break;\n }\n }\n // JS specific: little magic to add zero terminator to end of string\n if (s.gzindex < s.gzhead.name.length) {\n val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;\n } else {\n val = 0;\n }\n put_byte(s, val);\n } while (val !== 0);\n\n if (s.gzhead.hcrc && s.pending > beg) {\n strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n }\n if (val === 0) {\n s.gzindex = 0;\n s.status = COMMENT_STATE;\n }\n }\n else {\n s.status = COMMENT_STATE;\n }\n }\n if (s.status === COMMENT_STATE) {\n if (s.gzhead.comment/* != Z_NULL*/) {\n beg = s.pending; /* start of bytes to update crc */\n //int val;\n\n do {\n if (s.pending === s.pending_buf_size) {\n if (s.gzhead.hcrc && s.pending > beg) {\n strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n }\n flush_pending(strm);\n beg = s.pending;\n if (s.pending === s.pending_buf_size) {\n val = 1;\n break;\n }\n }\n // JS specific: little magic to add zero terminator to end of string\n if (s.gzindex < s.gzhead.comment.length) {\n val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;\n } else {\n val = 0;\n }\n put_byte(s, val);\n } while (val !== 0);\n\n if (s.gzhead.hcrc && s.pending > beg) {\n strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n }\n if (val === 0) {\n s.status = HCRC_STATE;\n }\n }\n else {\n s.status = HCRC_STATE;\n }\n }\n if (s.status === HCRC_STATE) {\n if (s.gzhead.hcrc) {\n if (s.pending + 2 > s.pending_buf_size) {\n flush_pending(strm);\n }\n if (s.pending + 2 <= s.pending_buf_size) {\n put_byte(s, strm.adler & 0xff);\n put_byte(s, (strm.adler >> 8) & 0xff);\n strm.adler = 0; //crc32(0L, Z_NULL, 0);\n s.status = BUSY_STATE;\n }\n }\n else {\n s.status = BUSY_STATE;\n }\n }\n//#endif\n\n /* Flush as much pending output as possible */\n if (s.pending !== 0) {\n flush_pending(strm);\n if (strm.avail_out === 0) {\n /* Since avail_out is 0, deflate will be called again with\n * more output space, but possibly with both pending and\n * avail_in equal to zero. There won't be anything to do,\n * but this is not an error situation so make sure we\n * return OK instead of BUF_ERROR at next call of deflate:\n */\n s.last_flush = -1;\n return Z_OK;\n }\n\n /* Make sure there is something to do and avoid duplicate consecutive\n * flushes. For repeated and useless calls with Z_FINISH, we keep\n * returning Z_STREAM_END instead of Z_BUF_ERROR.\n */\n } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&\n flush !== Z_FINISH) {\n return err(strm, Z_BUF_ERROR);\n }\n\n /* User must not provide more input after the first FINISH: */\n if (s.status === FINISH_STATE && strm.avail_in !== 0) {\n return err(strm, Z_BUF_ERROR);\n }\n\n /* Start a new block or continue the current one.\n */\n if (strm.avail_in !== 0 || s.lookahead !== 0 ||\n (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {\n var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :\n (s.strategy === Z_RLE ? deflate_rle(s, flush) :\n configuration_table[s.level].func(s, flush));\n\n if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {\n s.status = FINISH_STATE;\n }\n if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {\n if (strm.avail_out === 0) {\n s.last_flush = -1;\n /* avoid BUF_ERROR next call, see above */\n }\n return Z_OK;\n /* If flush != Z_NO_FLUSH && avail_out == 0, the next call\n * of deflate should use the same flush parameter to make sure\n * that the flush is complete. So we don't have to output an\n * empty block here, this will be done at next call. This also\n * ensures that for a very small output buffer, we emit at most\n * one empty block.\n */\n }\n if (bstate === BS_BLOCK_DONE) {\n if (flush === Z_PARTIAL_FLUSH) {\n trees._tr_align(s);\n }\n else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */\n\n trees._tr_stored_block(s, 0, 0, false);\n /* For a full flush, this empty block will be recognized\n * as a special marker by inflate_sync().\n */\n if (flush === Z_FULL_FLUSH) {\n /*** CLEAR_HASH(s); ***/ /* forget history */\n zero(s.head); // Fill with NIL (= 0);\n\n if (s.lookahead === 0) {\n s.strstart = 0;\n s.block_start = 0;\n s.insert = 0;\n }\n }\n }\n flush_pending(strm);\n if (strm.avail_out === 0) {\n s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */\n return Z_OK;\n }\n }\n }\n //Assert(strm->avail_out > 0, \"bug2\");\n //if (strm.avail_out <= 0) { throw new Error(\"bug2\");}\n\n if (flush !== Z_FINISH) { return Z_OK; }\n if (s.wrap <= 0) { return Z_STREAM_END; }\n\n /* Write the trailer */\n if (s.wrap === 2) {\n put_byte(s, strm.adler & 0xff);\n put_byte(s, (strm.adler >> 8) & 0xff);\n put_byte(s, (strm.adler >> 16) & 0xff);\n put_byte(s, (strm.adler >> 24) & 0xff);\n put_byte(s, strm.total_in & 0xff);\n put_byte(s, (strm.total_in >> 8) & 0xff);\n put_byte(s, (strm.total_in >> 16) & 0xff);\n put_byte(s, (strm.total_in >> 24) & 0xff);\n }\n else\n {\n putShortMSB(s, strm.adler >>> 16);\n putShortMSB(s, strm.adler & 0xffff);\n }\n\n flush_pending(strm);\n /* If avail_out is zero, the application will call deflate again\n * to flush the rest.\n */\n if (s.wrap > 0) { s.wrap = -s.wrap; }\n /* write the trailer only once! */\n return s.pending !== 0 ? Z_OK : Z_STREAM_END;\n}\n\nfunction deflateEnd(strm) {\n var status;\n\n if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {\n return Z_STREAM_ERROR;\n }\n\n status = strm.state.status;\n if (status !== INIT_STATE &&\n status !== EXTRA_STATE &&\n status !== NAME_STATE &&\n status !== COMMENT_STATE &&\n status !== HCRC_STATE &&\n status !== BUSY_STATE &&\n status !== FINISH_STATE\n ) {\n return err(strm, Z_STREAM_ERROR);\n }\n\n strm.state = null;\n\n return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;\n}\n\n\n/* =========================================================================\n * Initializes the compression dictionary from the given byte\n * sequence without producing any compressed output.\n */\nfunction deflateSetDictionary(strm, dictionary) {\n var dictLength = dictionary.length;\n\n var s;\n var str, n;\n var wrap;\n var avail;\n var next;\n var input;\n var tmpDict;\n\n if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {\n return Z_STREAM_ERROR;\n }\n\n s = strm.state;\n wrap = s.wrap;\n\n if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {\n return Z_STREAM_ERROR;\n }\n\n /* when using zlib wrappers, compute Adler-32 for provided dictionary */\n if (wrap === 1) {\n /* adler32(strm->adler, dictionary, dictLength); */\n strm.adler = adler32(strm.adler, dictionary, dictLength, 0);\n }\n\n s.wrap = 0; /* avoid computing Adler-32 in read_buf */\n\n /* if dictionary would fill window, just replace the history */\n if (dictLength >= s.w_size) {\n if (wrap === 0) { /* already empty otherwise */\n /*** CLEAR_HASH(s); ***/\n zero(s.head); // Fill with NIL (= 0);\n s.strstart = 0;\n s.block_start = 0;\n s.insert = 0;\n }\n /* use the tail */\n // dictionary = dictionary.slice(dictLength - s.w_size);\n tmpDict = new utils.Buf8(s.w_size);\n utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0);\n dictionary = tmpDict;\n dictLength = s.w_size;\n }\n /* insert dictionary into window and hash */\n avail = strm.avail_in;\n next = strm.next_in;\n input = strm.input;\n strm.avail_in = dictLength;\n strm.next_in = 0;\n strm.input = dictionary;\n fill_window(s);\n while (s.lookahead >= MIN_MATCH) {\n str = s.strstart;\n n = s.lookahead - (MIN_MATCH - 1);\n do {\n /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;\n\n s.prev[str & s.w_mask] = s.head[s.ins_h];\n\n s.head[s.ins_h] = str;\n str++;\n } while (--n);\n s.strstart = str;\n s.lookahead = MIN_MATCH - 1;\n fill_window(s);\n }\n s.strstart += s.lookahead;\n s.block_start = s.strstart;\n s.insert = s.lookahead;\n s.lookahead = 0;\n s.match_length = s.prev_length = MIN_MATCH - 1;\n s.match_available = 0;\n strm.next_in = next;\n strm.input = input;\n strm.avail_in = avail;\n s.wrap = wrap;\n return Z_OK;\n}\n\n\nexports.deflateInit = deflateInit;\nexports.deflateInit2 = deflateInit2;\nexports.deflateReset = deflateReset;\nexports.deflateResetKeep = deflateResetKeep;\nexports.deflateSetHeader = deflateSetHeader;\nexports.deflate = deflate;\nexports.deflateEnd = deflateEnd;\nexports.deflateSetDictionary = deflateSetDictionary;\nexports.deflateInfo = 'pako deflate (from Nodeca project)';\n\n/* Not implemented\nexports.deflateBound = deflateBound;\nexports.deflateCopy = deflateCopy;\nexports.deflateParams = deflateParams;\nexports.deflatePending = deflatePending;\nexports.deflatePrime = deflatePrime;\nexports.deflateTune = deflateTune;\n*/\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n/* eslint-disable space-unary-ops */\n\nvar utils = require('../utils/common');\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n//var Z_FILTERED = 1;\n//var Z_HUFFMAN_ONLY = 2;\n//var Z_RLE = 3;\nvar Z_FIXED = 4;\n//var Z_DEFAULT_STRATEGY = 0;\n\n/* Possible values of the data_type field (though see inflate()) */\nvar Z_BINARY = 0;\nvar Z_TEXT = 1;\n//var Z_ASCII = 1; // = Z_TEXT\nvar Z_UNKNOWN = 2;\n\n/*============================================================================*/\n\n\nfunction zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }\n\n// From zutil.h\n\nvar STORED_BLOCK = 0;\nvar STATIC_TREES = 1;\nvar DYN_TREES = 2;\n/* The three kinds of block type */\n\nvar MIN_MATCH = 3;\nvar MAX_MATCH = 258;\n/* The minimum and maximum match lengths */\n\n// From deflate.h\n/* ===========================================================================\n * Internal compression state.\n */\n\nvar LENGTH_CODES = 29;\n/* number of length codes, not counting the special END_BLOCK code */\n\nvar LITERALS = 256;\n/* number of literal bytes 0..255 */\n\nvar L_CODES = LITERALS + 1 + LENGTH_CODES;\n/* number of Literal or Length codes, including the END_BLOCK code */\n\nvar D_CODES = 30;\n/* number of distance codes */\n\nvar BL_CODES = 19;\n/* number of codes used to transfer the bit lengths */\n\nvar HEAP_SIZE = 2 * L_CODES + 1;\n/* maximum heap size */\n\nvar MAX_BITS = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nvar Buf_size = 16;\n/* size of bit buffer in bi_buf */\n\n\n/* ===========================================================================\n * Constants\n */\n\nvar MAX_BL_BITS = 7;\n/* Bit length codes must not exceed MAX_BL_BITS bits */\n\nvar END_BLOCK = 256;\n/* end of block literal code */\n\nvar REP_3_6 = 16;\n/* repeat previous bit length 3-6 times (2 bits of repeat count) */\n\nvar REPZ_3_10 = 17;\n/* repeat a zero length 3-10 times (3 bits of repeat count) */\n\nvar REPZ_11_138 = 18;\n/* repeat a zero length 11-138 times (7 bits of repeat count) */\n\n/* eslint-disable comma-spacing,array-bracket-spacing */\nvar extra_lbits = /* extra bits for each length code */\n [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];\n\nvar extra_dbits = /* extra bits for each distance code */\n [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];\n\nvar extra_blbits = /* extra bits for each bit length code */\n [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];\n\nvar bl_order =\n [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];\n/* eslint-enable comma-spacing,array-bracket-spacing */\n\n/* The lengths of the bit length codes are sent in order of decreasing\n * probability, to avoid transmitting the lengths for unused bit length codes.\n */\n\n/* ===========================================================================\n * Local data. These are initialized only once.\n */\n\n// We pre-fill arrays with 0 to avoid uninitialized gaps\n\nvar DIST_CODE_LEN = 512; /* see definition of array dist_code below */\n\n// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1\nvar static_ltree = new Array((L_CODES + 2) * 2);\nzero(static_ltree);\n/* The static literal tree. Since the bit lengths are imposed, there is no\n * need for the L_CODES extra codes used during heap construction. However\n * The codes 286 and 287 are needed to build a canonical tree (see _tr_init\n * below).\n */\n\nvar static_dtree = new Array(D_CODES * 2);\nzero(static_dtree);\n/* The static distance tree. (Actually a trivial tree since all codes use\n * 5 bits.)\n */\n\nvar _dist_code = new Array(DIST_CODE_LEN);\nzero(_dist_code);\n/* Distance codes. The first 256 values correspond to the distances\n * 3 .. 258, the last 256 values correspond to the top 8 bits of\n * the 15 bit distances.\n */\n\nvar _length_code = new Array(MAX_MATCH - MIN_MATCH + 1);\nzero(_length_code);\n/* length code for each normalized match length (0 == MIN_MATCH) */\n\nvar base_length = new Array(LENGTH_CODES);\nzero(base_length);\n/* First normalized length for each code (0 = MIN_MATCH) */\n\nvar base_dist = new Array(D_CODES);\nzero(base_dist);\n/* First normalized distance for each code (0 = distance of 1) */\n\n\nfunction StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {\n\n this.static_tree = static_tree; /* static tree or NULL */\n this.extra_bits = extra_bits; /* extra bits for each code or NULL */\n this.extra_base = extra_base; /* base index for extra_bits */\n this.elems = elems; /* max number of elements in the tree */\n this.max_length = max_length; /* max bit length for the codes */\n\n // show if `static_tree` has data or dummy - needed for monomorphic objects\n this.has_stree = static_tree && static_tree.length;\n}\n\n\nvar static_l_desc;\nvar static_d_desc;\nvar static_bl_desc;\n\n\nfunction TreeDesc(dyn_tree, stat_desc) {\n this.dyn_tree = dyn_tree; /* the dynamic tree */\n this.max_code = 0; /* largest code with non zero frequency */\n this.stat_desc = stat_desc; /* the corresponding static tree */\n}\n\n\n\nfunction d_code(dist) {\n return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];\n}\n\n\n/* ===========================================================================\n * Output a short LSB first on the stream.\n * IN assertion: there is enough room in pendingBuf.\n */\nfunction put_short(s, w) {\n// put_byte(s, (uch)((w) & 0xff));\n// put_byte(s, (uch)((ush)(w) >> 8));\n s.pending_buf[s.pending++] = (w) & 0xff;\n s.pending_buf[s.pending++] = (w >>> 8) & 0xff;\n}\n\n\n/* ===========================================================================\n * Send a value on a given number of bits.\n * IN assertion: length <= 16 and value fits in length bits.\n */\nfunction send_bits(s, value, length) {\n if (s.bi_valid > (Buf_size - length)) {\n s.bi_buf |= (value << s.bi_valid) & 0xffff;\n put_short(s, s.bi_buf);\n s.bi_buf = value >> (Buf_size - s.bi_valid);\n s.bi_valid += length - Buf_size;\n } else {\n s.bi_buf |= (value << s.bi_valid) & 0xffff;\n s.bi_valid += length;\n }\n}\n\n\nfunction send_code(s, c, tree) {\n send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);\n}\n\n\n/* ===========================================================================\n * Reverse the first len bits of a code, using straightforward code (a faster\n * method would use a table)\n * IN assertion: 1 <= len <= 15\n */\nfunction bi_reverse(code, len) {\n var res = 0;\n do {\n res |= code & 1;\n code >>>= 1;\n res <<= 1;\n } while (--len > 0);\n return res >>> 1;\n}\n\n\n/* ===========================================================================\n * Flush the bit buffer, keeping at most 7 bits in it.\n */\nfunction bi_flush(s) {\n if (s.bi_valid === 16) {\n put_short(s, s.bi_buf);\n s.bi_buf = 0;\n s.bi_valid = 0;\n\n } else if (s.bi_valid >= 8) {\n s.pending_buf[s.pending++] = s.bi_buf & 0xff;\n s.bi_buf >>= 8;\n s.bi_valid -= 8;\n }\n}\n\n\n/* ===========================================================================\n * Compute the optimal bit lengths for a tree and update the total bit length\n * for the current block.\n * IN assertion: the fields freq and dad are set, heap[heap_max] and\n * above are the tree nodes sorted by increasing frequency.\n * OUT assertions: the field len is set to the optimal bit length, the\n * array bl_count contains the frequencies for each bit length.\n * The length opt_len is updated; static_len is also updated if stree is\n * not null.\n */\nfunction gen_bitlen(s, desc)\n// deflate_state *s;\n// tree_desc *desc; /* the tree descriptor */\n{\n var tree = desc.dyn_tree;\n var max_code = desc.max_code;\n var stree = desc.stat_desc.static_tree;\n var has_stree = desc.stat_desc.has_stree;\n var extra = desc.stat_desc.extra_bits;\n var base = desc.stat_desc.extra_base;\n var max_length = desc.stat_desc.max_length;\n var h; /* heap index */\n var n, m; /* iterate over the tree elements */\n var bits; /* bit length */\n var xbits; /* extra bits */\n var f; /* frequency */\n var overflow = 0; /* number of elements with bit length too large */\n\n for (bits = 0; bits <= MAX_BITS; bits++) {\n s.bl_count[bits] = 0;\n }\n\n /* In a first pass, compute the optimal bit lengths (which may\n * overflow in the case of the bit length tree).\n */\n tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */\n\n for (h = s.heap_max + 1; h < HEAP_SIZE; h++) {\n n = s.heap[h];\n bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;\n if (bits > max_length) {\n bits = max_length;\n overflow++;\n }\n tree[n * 2 + 1]/*.Len*/ = bits;\n /* We overwrite tree[n].Dad which is no longer needed */\n\n if (n > max_code) { continue; } /* not a leaf node */\n\n s.bl_count[bits]++;\n xbits = 0;\n if (n >= base) {\n xbits = extra[n - base];\n }\n f = tree[n * 2]/*.Freq*/;\n s.opt_len += f * (bits + xbits);\n if (has_stree) {\n s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);\n }\n }\n if (overflow === 0) { return; }\n\n // Trace((stderr,\"\\nbit length overflow\\n\"));\n /* This happens for example on obj2 and pic of the Calgary corpus */\n\n /* Find the first bit length which could increase: */\n do {\n bits = max_length - 1;\n while (s.bl_count[bits] === 0) { bits--; }\n s.bl_count[bits]--; /* move one leaf down the tree */\n s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */\n s.bl_count[max_length]--;\n /* The brother of the overflow item also moves one step up,\n * but this does not affect bl_count[max_length]\n */\n overflow -= 2;\n } while (overflow > 0);\n\n /* Now recompute all bit lengths, scanning in increasing frequency.\n * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all\n * lengths instead of fixing only the wrong ones. This idea is taken\n * from 'ar' written by Haruhiko Okumura.)\n */\n for (bits = max_length; bits !== 0; bits--) {\n n = s.bl_count[bits];\n while (n !== 0) {\n m = s.heap[--h];\n if (m > max_code) { continue; }\n if (tree[m * 2 + 1]/*.Len*/ !== bits) {\n // Trace((stderr,\"code %d bits %d->%d\\n\", m, tree[m].Len, bits));\n s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;\n tree[m * 2 + 1]/*.Len*/ = bits;\n }\n n--;\n }\n }\n}\n\n\n/* ===========================================================================\n * Generate the codes for a given tree and bit counts (which need not be\n * optimal).\n * IN assertion: the array bl_count contains the bit length statistics for\n * the given tree and the field len is set for all tree elements.\n * OUT assertion: the field code is set for all tree elements of non\n * zero code length.\n */\nfunction gen_codes(tree, max_code, bl_count)\n// ct_data *tree; /* the tree to decorate */\n// int max_code; /* largest code with non zero frequency */\n// ushf *bl_count; /* number of codes at each bit length */\n{\n var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */\n var code = 0; /* running code value */\n var bits; /* bit index */\n var n; /* code index */\n\n /* The distribution counts are first used to generate the code values\n * without bit reversal.\n */\n for (bits = 1; bits <= MAX_BITS; bits++) {\n next_code[bits] = code = (code + bl_count[bits - 1]) << 1;\n }\n /* Check that the bit counts in bl_count are consistent. The last code\n * must be all ones.\n */\n //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,\n // \"inconsistent bit counts\");\n //Tracev((stderr,\"\\ngen_codes: max_code %d \", max_code));\n\n for (n = 0; n <= max_code; n++) {\n var len = tree[n * 2 + 1]/*.Len*/;\n if (len === 0) { continue; }\n /* Now reverse the bits */\n tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);\n\n //Tracecv(tree != static_ltree, (stderr,\"\\nn %3d %c l %2d c %4x (%x) \",\n // n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));\n }\n}\n\n\n/* ===========================================================================\n * Initialize the various 'constant' tables.\n */\nfunction tr_static_init() {\n var n; /* iterates over tree elements */\n var bits; /* bit counter */\n var length; /* length value */\n var code; /* code value */\n var dist; /* distance index */\n var bl_count = new Array(MAX_BITS + 1);\n /* number of codes at each bit length for an optimal tree */\n\n // do check in _tr_init()\n //if (static_init_done) return;\n\n /* For some embedded targets, global variables are not initialized: */\n/*#ifdef NO_INIT_GLOBAL_POINTERS\n static_l_desc.static_tree = static_ltree;\n static_l_desc.extra_bits = extra_lbits;\n static_d_desc.static_tree = static_dtree;\n static_d_desc.extra_bits = extra_dbits;\n static_bl_desc.extra_bits = extra_blbits;\n#endif*/\n\n /* Initialize the mapping length (0..255) -> length code (0..28) */\n length = 0;\n for (code = 0; code < LENGTH_CODES - 1; code++) {\n base_length[code] = length;\n for (n = 0; n < (1 << extra_lbits[code]); n++) {\n _length_code[length++] = code;\n }\n }\n //Assert (length == 256, \"tr_static_init: length != 256\");\n /* Note that the length 255 (match length 258) can be represented\n * in two different ways: code 284 + 5 bits or code 285, so we\n * overwrite length_code[255] to use the best encoding:\n */\n _length_code[length - 1] = code;\n\n /* Initialize the mapping dist (0..32K) -> dist code (0..29) */\n dist = 0;\n for (code = 0; code < 16; code++) {\n base_dist[code] = dist;\n for (n = 0; n < (1 << extra_dbits[code]); n++) {\n _dist_code[dist++] = code;\n }\n }\n //Assert (dist == 256, \"tr_static_init: dist != 256\");\n dist >>= 7; /* from now on, all distances are divided by 128 */\n for (; code < D_CODES; code++) {\n base_dist[code] = dist << 7;\n for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {\n _dist_code[256 + dist++] = code;\n }\n }\n //Assert (dist == 256, \"tr_static_init: 256+dist != 512\");\n\n /* Construct the codes of the static literal tree */\n for (bits = 0; bits <= MAX_BITS; bits++) {\n bl_count[bits] = 0;\n }\n\n n = 0;\n while (n <= 143) {\n static_ltree[n * 2 + 1]/*.Len*/ = 8;\n n++;\n bl_count[8]++;\n }\n while (n <= 255) {\n static_ltree[n * 2 + 1]/*.Len*/ = 9;\n n++;\n bl_count[9]++;\n }\n while (n <= 279) {\n static_ltree[n * 2 + 1]/*.Len*/ = 7;\n n++;\n bl_count[7]++;\n }\n while (n <= 287) {\n static_ltree[n * 2 + 1]/*.Len*/ = 8;\n n++;\n bl_count[8]++;\n }\n /* Codes 286 and 287 do not exist, but we must include them in the\n * tree construction to get a canonical Huffman tree (longest code\n * all ones)\n */\n gen_codes(static_ltree, L_CODES + 1, bl_count);\n\n /* The static distance tree is trivial: */\n for (n = 0; n < D_CODES; n++) {\n static_dtree[n * 2 + 1]/*.Len*/ = 5;\n static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);\n }\n\n // Now data ready and we can init static trees\n static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS);\n static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0, D_CODES, MAX_BITS);\n static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0, BL_CODES, MAX_BL_BITS);\n\n //static_init_done = true;\n}\n\n\n/* ===========================================================================\n * Initialize a new block.\n */\nfunction init_block(s) {\n var n; /* iterates over tree elements */\n\n /* Initialize the trees. */\n for (n = 0; n < L_CODES; n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }\n for (n = 0; n < D_CODES; n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }\n for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }\n\n s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;\n s.opt_len = s.static_len = 0;\n s.last_lit = s.matches = 0;\n}\n\n\n/* ===========================================================================\n * Flush the bit buffer and align the output on a byte boundary\n */\nfunction bi_windup(s)\n{\n if (s.bi_valid > 8) {\n put_short(s, s.bi_buf);\n } else if (s.bi_valid > 0) {\n //put_byte(s, (Byte)s->bi_buf);\n s.pending_buf[s.pending++] = s.bi_buf;\n }\n s.bi_buf = 0;\n s.bi_valid = 0;\n}\n\n/* ===========================================================================\n * Copy a stored block, storing first the length and its\n * one's complement if requested.\n */\nfunction copy_block(s, buf, len, header)\n//DeflateState *s;\n//charf *buf; /* the input data */\n//unsigned len; /* its length */\n//int header; /* true if block header must be written */\n{\n bi_windup(s); /* align on byte boundary */\n\n if (header) {\n put_short(s, len);\n put_short(s, ~len);\n }\n// while (len--) {\n// put_byte(s, *buf++);\n// }\n utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);\n s.pending += len;\n}\n\n/* ===========================================================================\n * Compares to subtrees, using the tree depth as tie breaker when\n * the subtrees have equal frequency. This minimizes the worst case length.\n */\nfunction smaller(tree, n, m, depth) {\n var _n2 = n * 2;\n var _m2 = m * 2;\n return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||\n (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));\n}\n\n/* ===========================================================================\n * Restore the heap property by moving down the tree starting at node k,\n * exchanging a node with the smallest of its two sons if necessary, stopping\n * when the heap property is re-established (each father smaller than its\n * two sons).\n */\nfunction pqdownheap(s, tree, k)\n// deflate_state *s;\n// ct_data *tree; /* the tree to restore */\n// int k; /* node to move down */\n{\n var v = s.heap[k];\n var j = k << 1; /* left son of k */\n while (j <= s.heap_len) {\n /* Set j to the smallest of the two sons: */\n if (j < s.heap_len &&\n smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {\n j++;\n }\n /* Exit if v is smaller than both sons */\n if (smaller(tree, v, s.heap[j], s.depth)) { break; }\n\n /* Exchange v with the smallest son */\n s.heap[k] = s.heap[j];\n k = j;\n\n /* And continue down the tree, setting j to the left son of k */\n j <<= 1;\n }\n s.heap[k] = v;\n}\n\n\n// inlined manually\n// var SMALLEST = 1;\n\n/* ===========================================================================\n * Send the block data compressed using the given Huffman trees\n */\nfunction compress_block(s, ltree, dtree)\n// deflate_state *s;\n// const ct_data *ltree; /* literal tree */\n// const ct_data *dtree; /* distance tree */\n{\n var dist; /* distance of matched string */\n var lc; /* match length or unmatched char (if dist == 0) */\n var lx = 0; /* running index in l_buf */\n var code; /* the code to send */\n var extra; /* number of extra bits to send */\n\n if (s.last_lit !== 0) {\n do {\n dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]);\n lc = s.pending_buf[s.l_buf + lx];\n lx++;\n\n if (dist === 0) {\n send_code(s, lc, ltree); /* send a literal byte */\n //Tracecv(isgraph(lc), (stderr,\" '%c' \", lc));\n } else {\n /* Here, lc is the match length - MIN_MATCH */\n code = _length_code[lc];\n send_code(s, code + LITERALS + 1, ltree); /* send the length code */\n extra = extra_lbits[code];\n if (extra !== 0) {\n lc -= base_length[code];\n send_bits(s, lc, extra); /* send the extra length bits */\n }\n dist--; /* dist is now the match distance - 1 */\n code = d_code(dist);\n //Assert (code < D_CODES, \"bad d_code\");\n\n send_code(s, code, dtree); /* send the distance code */\n extra = extra_dbits[code];\n if (extra !== 0) {\n dist -= base_dist[code];\n send_bits(s, dist, extra); /* send the extra distance bits */\n }\n } /* literal or match pair ? */\n\n /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */\n //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,\n // \"pendingBuf overflow\");\n\n } while (lx < s.last_lit);\n }\n\n send_code(s, END_BLOCK, ltree);\n}\n\n\n/* ===========================================================================\n * Construct one Huffman tree and assigns the code bit strings and lengths.\n * Update the total bit length for the current block.\n * IN assertion: the field freq is set for all tree elements.\n * OUT assertions: the fields len and code are set to the optimal bit length\n * and corresponding code. The length opt_len is updated; static_len is\n * also updated if stree is not null. The field max_code is set.\n */\nfunction build_tree(s, desc)\n// deflate_state *s;\n// tree_desc *desc; /* the tree descriptor */\n{\n var tree = desc.dyn_tree;\n var stree = desc.stat_desc.static_tree;\n var has_stree = desc.stat_desc.has_stree;\n var elems = desc.stat_desc.elems;\n var n, m; /* iterate over heap elements */\n var max_code = -1; /* largest code with non zero frequency */\n var node; /* new node being created */\n\n /* Construct the initial heap, with least frequent element in\n * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].\n * heap[0] is not used.\n */\n s.heap_len = 0;\n s.heap_max = HEAP_SIZE;\n\n for (n = 0; n < elems; n++) {\n if (tree[n * 2]/*.Freq*/ !== 0) {\n s.heap[++s.heap_len] = max_code = n;\n s.depth[n] = 0;\n\n } else {\n tree[n * 2 + 1]/*.Len*/ = 0;\n }\n }\n\n /* The pkzip format requires that at least one distance code exists,\n * and that at least one bit should be sent even if there is only one\n * possible code. So to avoid special checks later on we force at least\n * two codes of non zero frequency.\n */\n while (s.heap_len < 2) {\n node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);\n tree[node * 2]/*.Freq*/ = 1;\n s.depth[node] = 0;\n s.opt_len--;\n\n if (has_stree) {\n s.static_len -= stree[node * 2 + 1]/*.Len*/;\n }\n /* node is 0 or 1 so it does not have extra bits */\n }\n desc.max_code = max_code;\n\n /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,\n * establish sub-heaps of increasing lengths:\n */\n for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }\n\n /* Construct the Huffman tree by repeatedly combining the least two\n * frequent nodes.\n */\n node = elems; /* next internal node of the tree */\n do {\n //pqremove(s, tree, n); /* n = node of least frequency */\n /*** pqremove ***/\n n = s.heap[1/*SMALLEST*/];\n s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];\n pqdownheap(s, tree, 1/*SMALLEST*/);\n /***/\n\n m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */\n\n s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */\n s.heap[--s.heap_max] = m;\n\n /* Create a new node father of n and m */\n tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;\n s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;\n tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;\n\n /* and insert the new node in the heap */\n s.heap[1/*SMALLEST*/] = node++;\n pqdownheap(s, tree, 1/*SMALLEST*/);\n\n } while (s.heap_len >= 2);\n\n s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];\n\n /* At this point, the fields freq and dad are set. We can now\n * generate the bit lengths.\n */\n gen_bitlen(s, desc);\n\n /* The field len is now set, we can generate the bit codes */\n gen_codes(tree, max_code, s.bl_count);\n}\n\n\n/* ===========================================================================\n * Scan a literal or distance tree to determine the frequencies of the codes\n * in the bit length tree.\n */\nfunction scan_tree(s, tree, max_code)\n// deflate_state *s;\n// ct_data *tree; /* the tree to be scanned */\n// int max_code; /* and its largest code of non zero frequency */\n{\n var n; /* iterates over all tree elements */\n var prevlen = -1; /* last emitted length */\n var curlen; /* length of current code */\n\n var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n var count = 0; /* repeat count of the current code */\n var max_count = 7; /* max repeat count */\n var min_count = 4; /* min repeat count */\n\n if (nextlen === 0) {\n max_count = 138;\n min_count = 3;\n }\n tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */\n\n for (n = 0; n <= max_code; n++) {\n curlen = nextlen;\n nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n if (++count < max_count && curlen === nextlen) {\n continue;\n\n } else if (count < min_count) {\n s.bl_tree[curlen * 2]/*.Freq*/ += count;\n\n } else if (curlen !== 0) {\n\n if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }\n s.bl_tree[REP_3_6 * 2]/*.Freq*/++;\n\n } else if (count <= 10) {\n s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;\n\n } else {\n s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;\n }\n\n count = 0;\n prevlen = curlen;\n\n if (nextlen === 0) {\n max_count = 138;\n min_count = 3;\n\n } else if (curlen === nextlen) {\n max_count = 6;\n min_count = 3;\n\n } else {\n max_count = 7;\n min_count = 4;\n }\n }\n}\n\n\n/* ===========================================================================\n * Send a literal or distance tree in compressed form, using the codes in\n * bl_tree.\n */\nfunction send_tree(s, tree, max_code)\n// deflate_state *s;\n// ct_data *tree; /* the tree to be scanned */\n// int max_code; /* and its largest code of non zero frequency */\n{\n var n; /* iterates over all tree elements */\n var prevlen = -1; /* last emitted length */\n var curlen; /* length of current code */\n\n var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n var count = 0; /* repeat count of the current code */\n var max_count = 7; /* max repeat count */\n var min_count = 4; /* min repeat count */\n\n /* tree[max_code+1].Len = -1; */ /* guard already set */\n if (nextlen === 0) {\n max_count = 138;\n min_count = 3;\n }\n\n for (n = 0; n <= max_code; n++) {\n curlen = nextlen;\n nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n if (++count < max_count && curlen === nextlen) {\n continue;\n\n } else if (count < min_count) {\n do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);\n\n } else if (curlen !== 0) {\n if (curlen !== prevlen) {\n send_code(s, curlen, s.bl_tree);\n count--;\n }\n //Assert(count >= 3 && count <= 6, \" 3_6?\");\n send_code(s, REP_3_6, s.bl_tree);\n send_bits(s, count - 3, 2);\n\n } else if (count <= 10) {\n send_code(s, REPZ_3_10, s.bl_tree);\n send_bits(s, count - 3, 3);\n\n } else {\n send_code(s, REPZ_11_138, s.bl_tree);\n send_bits(s, count - 11, 7);\n }\n\n count = 0;\n prevlen = curlen;\n if (nextlen === 0) {\n max_count = 138;\n min_count = 3;\n\n } else if (curlen === nextlen) {\n max_count = 6;\n min_count = 3;\n\n } else {\n max_count = 7;\n min_count = 4;\n }\n }\n}\n\n\n/* ===========================================================================\n * Construct the Huffman tree for the bit lengths and return the index in\n * bl_order of the last bit length code to send.\n */\nfunction build_bl_tree(s) {\n var max_blindex; /* index of last bit length code of non zero freq */\n\n /* Determine the bit length frequencies for literal and distance trees */\n scan_tree(s, s.dyn_ltree, s.l_desc.max_code);\n scan_tree(s, s.dyn_dtree, s.d_desc.max_code);\n\n /* Build the bit length tree: */\n build_tree(s, s.bl_desc);\n /* opt_len now includes the length of the tree representations, except\n * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.\n */\n\n /* Determine the number of bit length codes to send. The pkzip format\n * requires that at least 4 bit length codes be sent. (appnote.txt says\n * 3 but the actual value used is 4.)\n */\n for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) {\n if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {\n break;\n }\n }\n /* Update opt_len to include the bit length tree and counts */\n s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;\n //Tracev((stderr, \"\\ndyn trees: dyn %ld, stat %ld\",\n // s->opt_len, s->static_len));\n\n return max_blindex;\n}\n\n\n/* ===========================================================================\n * Send the header for a block using dynamic Huffman trees: the counts, the\n * lengths of the bit length codes, the literal tree and the distance tree.\n * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.\n */\nfunction send_all_trees(s, lcodes, dcodes, blcodes)\n// deflate_state *s;\n// int lcodes, dcodes, blcodes; /* number of codes for each tree */\n{\n var rank; /* index in bl_order */\n\n //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, \"not enough codes\");\n //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,\n // \"too many codes\");\n //Tracev((stderr, \"\\nbl counts: \"));\n send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */\n send_bits(s, dcodes - 1, 5);\n send_bits(s, blcodes - 4, 4); /* not -3 as stated in appnote.txt */\n for (rank = 0; rank < blcodes; rank++) {\n //Tracev((stderr, \"\\nbl code %2d \", bl_order[rank]));\n send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);\n }\n //Tracev((stderr, \"\\nbl tree: sent %ld\", s->bits_sent));\n\n send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */\n //Tracev((stderr, \"\\nlit tree: sent %ld\", s->bits_sent));\n\n send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */\n //Tracev((stderr, \"\\ndist tree: sent %ld\", s->bits_sent));\n}\n\n\n/* ===========================================================================\n * Check if the data type is TEXT or BINARY, using the following algorithm:\n * - TEXT if the two conditions below are satisfied:\n * a) There are no non-portable control characters belonging to the\n * \"black list\" (0..6, 14..25, 28..31).\n * b) There is at least one printable character belonging to the\n * \"white list\" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).\n * - BINARY otherwise.\n * - The following partially-portable control characters form a\n * \"gray list\" that is ignored in this detection algorithm:\n * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).\n * IN assertion: the fields Freq of dyn_ltree are set.\n */\nfunction detect_data_type(s) {\n /* black_mask is the bit mask of black-listed bytes\n * set bits 0..6, 14..25, and 28..31\n * 0xf3ffc07f = binary 11110011111111111100000001111111\n */\n var black_mask = 0xf3ffc07f;\n var n;\n\n /* Check for non-textual (\"black-listed\") bytes. */\n for (n = 0; n <= 31; n++, black_mask >>>= 1) {\n if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {\n return Z_BINARY;\n }\n }\n\n /* Check for textual (\"white-listed\") bytes. */\n if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||\n s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {\n return Z_TEXT;\n }\n for (n = 32; n < LITERALS; n++) {\n if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {\n return Z_TEXT;\n }\n }\n\n /* There are no \"black-listed\" or \"white-listed\" bytes:\n * this stream either is empty or has tolerated (\"gray-listed\") bytes only.\n */\n return Z_BINARY;\n}\n\n\nvar static_init_done = false;\n\n/* ===========================================================================\n * Initialize the tree data structures for a new zlib stream.\n */\nfunction _tr_init(s)\n{\n\n if (!static_init_done) {\n tr_static_init();\n static_init_done = true;\n }\n\n s.l_desc = new TreeDesc(s.dyn_ltree, static_l_desc);\n s.d_desc = new TreeDesc(s.dyn_dtree, static_d_desc);\n s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);\n\n s.bi_buf = 0;\n s.bi_valid = 0;\n\n /* Initialize the first block of the first file: */\n init_block(s);\n}\n\n\n/* ===========================================================================\n * Send a stored block\n */\nfunction _tr_stored_block(s, buf, stored_len, last)\n//DeflateState *s;\n//charf *buf; /* input block */\n//ulg stored_len; /* length of input block */\n//int last; /* one if this is the last block for a file */\n{\n send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3); /* send block type */\n copy_block(s, buf, stored_len, true); /* with header */\n}\n\n\n/* ===========================================================================\n * Send one empty static block to give enough lookahead for inflate.\n * This takes 10 bits, of which 7 may remain in the bit buffer.\n */\nfunction _tr_align(s) {\n send_bits(s, STATIC_TREES << 1, 3);\n send_code(s, END_BLOCK, static_ltree);\n bi_flush(s);\n}\n\n\n/* ===========================================================================\n * Determine the best encoding for the current block: dynamic trees, static\n * trees or store, and output the encoded block to the zip file.\n */\nfunction _tr_flush_block(s, buf, stored_len, last)\n//DeflateState *s;\n//charf *buf; /* input block, or NULL if too old */\n//ulg stored_len; /* length of input block */\n//int last; /* one if this is the last block for a file */\n{\n var opt_lenb, static_lenb; /* opt_len and static_len in bytes */\n var max_blindex = 0; /* index of last bit length code of non zero freq */\n\n /* Build the Huffman trees unless a stored block is forced */\n if (s.level > 0) {\n\n /* Check if the file is binary or text */\n if (s.strm.data_type === Z_UNKNOWN) {\n s.strm.data_type = detect_data_type(s);\n }\n\n /* Construct the literal and distance trees */\n build_tree(s, s.l_desc);\n // Tracev((stderr, \"\\nlit data: dyn %ld, stat %ld\", s->opt_len,\n // s->static_len));\n\n build_tree(s, s.d_desc);\n // Tracev((stderr, \"\\ndist data: dyn %ld, stat %ld\", s->opt_len,\n // s->static_len));\n /* At this point, opt_len and static_len are the total bit lengths of\n * the compressed block data, excluding the tree representations.\n */\n\n /* Build the bit length tree for the above two trees, and get the index\n * in bl_order of the last bit length code to send.\n */\n max_blindex = build_bl_tree(s);\n\n /* Determine the best encoding. Compute the block lengths in bytes. */\n opt_lenb = (s.opt_len + 3 + 7) >>> 3;\n static_lenb = (s.static_len + 3 + 7) >>> 3;\n\n // Tracev((stderr, \"\\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u \",\n // opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,\n // s->last_lit));\n\n if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }\n\n } else {\n // Assert(buf != (char*)0, \"lost buf\");\n opt_lenb = static_lenb = stored_len + 5; /* force a stored block */\n }\n\n if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {\n /* 4: two words for the lengths */\n\n /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.\n * Otherwise we can't have processed more than WSIZE input bytes since\n * the last block flush, because compression would have been\n * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to\n * transform a block into a stored block.\n */\n _tr_stored_block(s, buf, stored_len, last);\n\n } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {\n\n send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);\n compress_block(s, static_ltree, static_dtree);\n\n } else {\n send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);\n send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);\n compress_block(s, s.dyn_ltree, s.dyn_dtree);\n }\n // Assert (s->compressed_len == s->bits_sent, \"bad compressed size\");\n /* The above check is made mod 2^32, for files larger than 512 MB\n * and uLong implemented on 32 bits.\n */\n init_block(s);\n\n if (last) {\n bi_windup(s);\n }\n // Tracev((stderr,\"\\ncomprlen %lu(%lu) \", s->compressed_len>>3,\n // s->compressed_len-7*last));\n}\n\n/* ===========================================================================\n * Save the match info and tally the frequency counts. Return true if\n * the current block must be flushed.\n */\nfunction _tr_tally(s, dist, lc)\n// deflate_state *s;\n// unsigned dist; /* distance of matched string */\n// unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */\n{\n //var out_length, in_length, dcode;\n\n s.pending_buf[s.d_buf + s.last_lit * 2] = (dist >>> 8) & 0xff;\n s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;\n\n s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;\n s.last_lit++;\n\n if (dist === 0) {\n /* lc is the unmatched char */\n s.dyn_ltree[lc * 2]/*.Freq*/++;\n } else {\n s.matches++;\n /* Here, lc is the match length - MIN_MATCH */\n dist--; /* dist = match distance - 1 */\n //Assert((ush)dist < (ush)MAX_DIST(s) &&\n // (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&\n // (ush)d_code(dist) < (ush)D_CODES, \"_tr_tally: bad match\");\n\n s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++;\n s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;\n }\n\n// (!) This block is disabled in zlib defaults,\n// don't enable it for binary compatibility\n\n//#ifdef TRUNCATE_BLOCK\n// /* Try to guess if it is profitable to stop the current block here */\n// if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {\n// /* Compute an upper bound for the compressed length */\n// out_length = s.last_lit*8;\n// in_length = s.strstart - s.block_start;\n//\n// for (dcode = 0; dcode < D_CODES; dcode++) {\n// out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);\n// }\n// out_length >>>= 3;\n// //Tracev((stderr,\"\\nlast_lit %u, in %ld, out ~%ld(%ld%%) \",\n// // s->last_lit, in_length, out_length,\n// // 100L - out_length*100L/in_length));\n// if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {\n// return true;\n// }\n// }\n//#endif\n\n return (s.last_lit === s.lit_bufsize - 1);\n /* We avoid equality with lit_bufsize because of wraparound at 64K\n * on 16 bit machines and because stored blocks are restricted to\n * 64K-1 bytes.\n */\n}\n\nexports._tr_init = _tr_init;\nexports._tr_stored_block = _tr_stored_block;\nexports._tr_flush_block = _tr_flush_block;\nexports._tr_tally = _tr_tally;\nexports._tr_align = _tr_align;\n","'use strict';\n\n\nvar zlib_inflate = require('./zlib/inflate');\nvar utils = require('./utils/common');\nvar strings = require('./utils/strings');\nvar c = require('./zlib/constants');\nvar msg = require('./zlib/messages');\nvar ZStream = require('./zlib/zstream');\nvar GZheader = require('./zlib/gzheader');\n\nvar toString = Object.prototype.toString;\n\n/**\n * class Inflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[inflate]]\n * and [[inflateRaw]].\n **/\n\n/* internal\n * inflate.chunks -> Array\n *\n * Chunks of output data, if [[Inflate#onData]] not overridden.\n **/\n\n/**\n * Inflate.result -> Uint8Array|Array|String\n *\n * Uncompressed result, generated by default [[Inflate#onData]]\n * and [[Inflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you\n * push a chunk with explicit flush (call [[Inflate#push]] with\n * `Z_SYNC_FLUSH` param).\n **/\n\n/**\n * Inflate.err -> Number\n *\n * Error code after inflate finished. 0 (Z_OK) on success.\n * Should be checked if broken data possible.\n **/\n\n/**\n * Inflate.msg -> String\n *\n * Error message, if [[Inflate.err]] != 0\n **/\n\n\n/**\n * new Inflate(options)\n * - options (Object): zlib inflate options.\n *\n * Creates new inflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `windowBits`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw inflate\n * - `to` (String) - if equal to 'string', then result will be converted\n * from utf8 to utf16 (javascript) string. When string output requested,\n * chunk length can differ from `chunkSize`, depending on content.\n *\n * By default, when no options set, autodetect deflate/gzip data format via\n * wrapper header.\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n * , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])\n * , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * var inflate = new pako.Inflate({ level: 3});\n *\n * inflate.push(chunk1, false);\n * inflate.push(chunk2, true); // true -> last chunk\n *\n * if (inflate.err) { throw new Error(inflate.err); }\n *\n * console.log(inflate.result);\n * ```\n **/\nfunction Inflate(options) {\n if (!(this instanceof Inflate)) return new Inflate(options);\n\n this.options = utils.assign({\n chunkSize: 16384,\n windowBits: 0,\n to: ''\n }, options || {});\n\n var opt = this.options;\n\n // Force window size for `raw` data, if not set directly,\n // because we have no header for autodetect.\n if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {\n opt.windowBits = -opt.windowBits;\n if (opt.windowBits === 0) { opt.windowBits = -15; }\n }\n\n // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate\n if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&\n !(options && options.windowBits)) {\n opt.windowBits += 32;\n }\n\n // Gzip header has no info about windows size, we can do autodetect only\n // for deflate. So, if window size not set, force it to max when gzip possible\n if ((opt.windowBits > 15) && (opt.windowBits < 48)) {\n // bit 3 (16) -> gzipped data\n // bit 4 (32) -> autodetect gzip/deflate\n if ((opt.windowBits & 15) === 0) {\n opt.windowBits |= 15;\n }\n }\n\n this.err = 0; // error code, if happens (0 = Z_OK)\n this.msg = ''; // error message\n this.ended = false; // used to avoid multiple onEnd() calls\n this.chunks = []; // chunks of compressed data\n\n this.strm = new ZStream();\n this.strm.avail_out = 0;\n\n var status = zlib_inflate.inflateInit2(\n this.strm,\n opt.windowBits\n );\n\n if (status !== c.Z_OK) {\n throw new Error(msg[status]);\n }\n\n this.header = new GZheader();\n\n zlib_inflate.inflateGetHeader(this.strm, this.header);\n\n // Setup dictionary\n if (opt.dictionary) {\n // Convert data if needed\n if (typeof opt.dictionary === 'string') {\n opt.dictionary = strings.string2buf(opt.dictionary);\n } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {\n opt.dictionary = new Uint8Array(opt.dictionary);\n }\n if (opt.raw) { //In raw mode we need to set the dictionary early\n status = zlib_inflate.inflateSetDictionary(this.strm, opt.dictionary);\n if (status !== c.Z_OK) {\n throw new Error(msg[status]);\n }\n }\n }\n}\n\n/**\n * Inflate#push(data[, mode]) -> Boolean\n * - data (Uint8Array|Array|ArrayBuffer|String): input data\n * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.\n * See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.\n *\n * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with\n * new output chunks. Returns `true` on success. The last data block must have\n * mode Z_FINISH (or `true`). That will flush internal pending buffers and call\n * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you\n * can use mode Z_SYNC_FLUSH, keeping the decompression context.\n *\n * On fail call [[Inflate#onEnd]] with error code and return false.\n *\n * We strongly recommend to use `Uint8Array` on input for best speed (output\n * format is detected automatically). Also, don't skip last param and always\n * use the same type in your code (boolean or number). That will improve JS speed.\n *\n * For regular `Array`-s make sure all elements are [0..255].\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true); // push last chunk\n * ```\n **/\nInflate.prototype.push = function (data, mode) {\n var strm = this.strm;\n var chunkSize = this.options.chunkSize;\n var dictionary = this.options.dictionary;\n var status, _mode;\n var next_out_utf8, tail, utf8str;\n\n // Flag to properly process Z_BUF_ERROR on testing inflate call\n // when we check that all output data was flushed.\n var allowBufError = false;\n\n if (this.ended) { return false; }\n _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH);\n\n // Convert data if needed\n if (typeof data === 'string') {\n // Only binary strings can be decompressed on practice\n strm.input = strings.binstring2buf(data);\n } else if (toString.call(data) === '[object ArrayBuffer]') {\n strm.input = new Uint8Array(data);\n } else {\n strm.input = data;\n }\n\n strm.next_in = 0;\n strm.avail_in = strm.input.length;\n\n do {\n if (strm.avail_out === 0) {\n strm.output = new utils.Buf8(chunkSize);\n strm.next_out = 0;\n strm.avail_out = chunkSize;\n }\n\n status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH); /* no bad return value */\n\n if (status === c.Z_NEED_DICT && dictionary) {\n status = zlib_inflate.inflateSetDictionary(this.strm, dictionary);\n }\n\n if (status === c.Z_BUF_ERROR && allowBufError === true) {\n status = c.Z_OK;\n allowBufError = false;\n }\n\n if (status !== c.Z_STREAM_END && status !== c.Z_OK) {\n this.onEnd(status);\n this.ended = true;\n return false;\n }\n\n if (strm.next_out) {\n if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) {\n\n if (this.options.to === 'string') {\n\n next_out_utf8 = strings.utf8border(strm.output, strm.next_out);\n\n tail = strm.next_out - next_out_utf8;\n utf8str = strings.buf2string(strm.output, next_out_utf8);\n\n // move tail\n strm.next_out = tail;\n strm.avail_out = chunkSize - tail;\n if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); }\n\n this.onData(utf8str);\n\n } else {\n this.onData(utils.shrinkBuf(strm.output, strm.next_out));\n }\n }\n }\n\n // When no more input data, we should check that internal inflate buffers\n // are flushed. The only way to do it when avail_out = 0 - run one more\n // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR.\n // Here we set flag to process this error properly.\n //\n // NOTE. Deflate does not return error in this case and does not needs such\n // logic.\n if (strm.avail_in === 0 && strm.avail_out === 0) {\n allowBufError = true;\n }\n\n } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END);\n\n if (status === c.Z_STREAM_END) {\n _mode = c.Z_FINISH;\n }\n\n // Finalize on the last chunk.\n if (_mode === c.Z_FINISH) {\n status = zlib_inflate.inflateEnd(this.strm);\n this.onEnd(status);\n this.ended = true;\n return status === c.Z_OK;\n }\n\n // callback interim results if Z_SYNC_FLUSH.\n if (_mode === c.Z_SYNC_FLUSH) {\n this.onEnd(c.Z_OK);\n strm.avail_out = 0;\n return true;\n }\n\n return true;\n};\n\n\n/**\n * Inflate#onData(chunk) -> Void\n * - chunk (Uint8Array|Array|String): output data. Type of array depends\n * on js engine support. When string output requested, each chunk\n * will be string.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nInflate.prototype.onData = function (chunk) {\n this.chunks.push(chunk);\n};\n\n\n/**\n * Inflate#onEnd(status) -> Void\n * - status (Number): inflate status. 0 (Z_OK) on success,\n * other if not.\n *\n * Called either after you tell inflate that the input stream is\n * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)\n * or if an error happened. By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nInflate.prototype.onEnd = function (status) {\n // On success - join\n if (status === c.Z_OK) {\n if (this.options.to === 'string') {\n // Glue & convert here, until we teach pako to send\n // utf8 aligned strings to onData\n this.result = this.chunks.join('');\n } else {\n this.result = utils.flattenChunks(this.chunks);\n }\n }\n this.chunks = [];\n this.err = status;\n this.msg = this.strm.msg;\n};\n\n\n/**\n * inflate(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Decompress `data` with inflate/ungzip and `options`. Autodetect\n * format via wrapper header by default. That's why we don't provide\n * separate `ungzip` method.\n *\n * Supported options are:\n *\n * - windowBits\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n * negative windowBits implicitly.\n * - `to` (String) - if equal to 'string', then result will be converted\n * from utf8 to utf16 (javascript) string. When string output requested,\n * chunk length can differ from `chunkSize`, depending on content.\n *\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n * , input = pako.deflate([1,2,3,4,5,6,7,8,9])\n * , output;\n *\n * try {\n * output = pako.inflate(input);\n * } catch (err)\n * console.log(err);\n * }\n * ```\n **/\nfunction inflate(input, options) {\n var inflator = new Inflate(options);\n\n inflator.push(input, true);\n\n // That will never happens, if you don't cheat with options :)\n if (inflator.err) { throw inflator.msg || msg[inflator.err]; }\n\n return inflator.result;\n}\n\n\n/**\n * inflateRaw(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * The same as [[inflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction inflateRaw(input, options) {\n options = options || {};\n options.raw = true;\n return inflate(input, options);\n}\n\n\n/**\n * ungzip(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Just shortcut to [[inflate]], because it autodetects format\n * by header.content. Done for convenience.\n **/\n\n\nexports.Inflate = Inflate;\nexports.inflate = inflate;\nexports.inflateRaw = inflateRaw;\nexports.ungzip = inflate;\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar utils = require('../utils/common');\nvar adler32 = require('./adler32');\nvar crc32 = require('./crc32');\nvar inflate_fast = require('./inffast');\nvar inflate_table = require('./inftrees');\n\nvar CODES = 0;\nvar LENS = 1;\nvar DISTS = 2;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n/* Allowed flush values; see deflate() and inflate() below for details */\n//var Z_NO_FLUSH = 0;\n//var Z_PARTIAL_FLUSH = 1;\n//var Z_SYNC_FLUSH = 2;\n//var Z_FULL_FLUSH = 3;\nvar Z_FINISH = 4;\nvar Z_BLOCK = 5;\nvar Z_TREES = 6;\n\n\n/* Return codes for the compression/decompression functions. Negative values\n * are errors, positive values are used for special but normal events.\n */\nvar Z_OK = 0;\nvar Z_STREAM_END = 1;\nvar Z_NEED_DICT = 2;\n//var Z_ERRNO = -1;\nvar Z_STREAM_ERROR = -2;\nvar Z_DATA_ERROR = -3;\nvar Z_MEM_ERROR = -4;\nvar Z_BUF_ERROR = -5;\n//var Z_VERSION_ERROR = -6;\n\n/* The deflate compression method */\nvar Z_DEFLATED = 8;\n\n\n/* STATES ====================================================================*/\n/* ===========================================================================*/\n\n\nvar HEAD = 1; /* i: waiting for magic header */\nvar FLAGS = 2; /* i: waiting for method and flags (gzip) */\nvar TIME = 3; /* i: waiting for modification time (gzip) */\nvar OS = 4; /* i: waiting for extra flags and operating system (gzip) */\nvar EXLEN = 5; /* i: waiting for extra length (gzip) */\nvar EXTRA = 6; /* i: waiting for extra bytes (gzip) */\nvar NAME = 7; /* i: waiting for end of file name (gzip) */\nvar COMMENT = 8; /* i: waiting for end of comment (gzip) */\nvar HCRC = 9; /* i: waiting for header crc (gzip) */\nvar DICTID = 10; /* i: waiting for dictionary check value */\nvar DICT = 11; /* waiting for inflateSetDictionary() call */\nvar TYPE = 12; /* i: waiting for type bits, including last-flag bit */\nvar TYPEDO = 13; /* i: same, but skip check to exit inflate on new block */\nvar STORED = 14; /* i: waiting for stored size (length and complement) */\nvar COPY_ = 15; /* i/o: same as COPY below, but only first time in */\nvar COPY = 16; /* i/o: waiting for input or output to copy stored block */\nvar TABLE = 17; /* i: waiting for dynamic block table lengths */\nvar LENLENS = 18; /* i: waiting for code length code lengths */\nvar CODELENS = 19; /* i: waiting for length/lit and distance code lengths */\nvar LEN_ = 20; /* i: same as LEN below, but only first time in */\nvar LEN = 21; /* i: waiting for length/lit/eob code */\nvar LENEXT = 22; /* i: waiting for length extra bits */\nvar DIST = 23; /* i: waiting for distance code */\nvar DISTEXT = 24; /* i: waiting for distance extra bits */\nvar MATCH = 25; /* o: waiting for output space to copy string */\nvar LIT = 26; /* o: waiting for output space to write literal */\nvar CHECK = 27; /* i: waiting for 32-bit check value */\nvar LENGTH = 28; /* i: waiting for 32-bit length (gzip) */\nvar DONE = 29; /* finished check, done -- remain here until reset */\nvar BAD = 30; /* got a data error -- remain here until reset */\nvar MEM = 31; /* got an inflate() memory error -- remain here until reset */\nvar SYNC = 32; /* looking for synchronization bytes to restart inflate() */\n\n/* ===========================================================================*/\n\n\n\nvar ENOUGH_LENS = 852;\nvar ENOUGH_DISTS = 592;\n//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);\n\nvar MAX_WBITS = 15;\n/* 32K LZ77 window */\nvar DEF_WBITS = MAX_WBITS;\n\n\nfunction zswap32(q) {\n return (((q >>> 24) & 0xff) +\n ((q >>> 8) & 0xff00) +\n ((q & 0xff00) << 8) +\n ((q & 0xff) << 24));\n}\n\n\nfunction InflateState() {\n this.mode = 0; /* current inflate mode */\n this.last = false; /* true if processing last block */\n this.wrap = 0; /* bit 0 true for zlib, bit 1 true for gzip */\n this.havedict = false; /* true if dictionary provided */\n this.flags = 0; /* gzip header method and flags (0 if zlib) */\n this.dmax = 0; /* zlib header max distance (INFLATE_STRICT) */\n this.check = 0; /* protected copy of check value */\n this.total = 0; /* protected copy of output count */\n // TODO: may be {}\n this.head = null; /* where to save gzip header information */\n\n /* sliding window */\n this.wbits = 0; /* log base 2 of requested window size */\n this.wsize = 0; /* window size or zero if not using window */\n this.whave = 0; /* valid bytes in the window */\n this.wnext = 0; /* window write index */\n this.window = null; /* allocated sliding window, if needed */\n\n /* bit accumulator */\n this.hold = 0; /* input bit accumulator */\n this.bits = 0; /* number of bits in \"in\" */\n\n /* for string and stored block copying */\n this.length = 0; /* literal or length of data to copy */\n this.offset = 0; /* distance back to copy string from */\n\n /* for table and code decoding */\n this.extra = 0; /* extra bits needed */\n\n /* fixed and dynamic code tables */\n this.lencode = null; /* starting table for length/literal codes */\n this.distcode = null; /* starting table for distance codes */\n this.lenbits = 0; /* index bits for lencode */\n this.distbits = 0; /* index bits for distcode */\n\n /* dynamic table building */\n this.ncode = 0; /* number of code length code lengths */\n this.nlen = 0; /* number of length code lengths */\n this.ndist = 0; /* number of distance code lengths */\n this.have = 0; /* number of code lengths in lens[] */\n this.next = null; /* next available space in codes[] */\n\n this.lens = new utils.Buf16(320); /* temporary storage for code lengths */\n this.work = new utils.Buf16(288); /* work area for code table building */\n\n /*\n because we don't have pointers in js, we use lencode and distcode directly\n as buffers so we don't need codes\n */\n //this.codes = new utils.Buf32(ENOUGH); /* space for code tables */\n this.lendyn = null; /* dynamic table for length/literal codes (JS specific) */\n this.distdyn = null; /* dynamic table for distance codes (JS specific) */\n this.sane = 0; /* if false, allow invalid distance too far */\n this.back = 0; /* bits back of last unprocessed length/lit */\n this.was = 0; /* initial length of match */\n}\n\nfunction inflateResetKeep(strm) {\n var state;\n\n if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n state = strm.state;\n strm.total_in = strm.total_out = state.total = 0;\n strm.msg = ''; /*Z_NULL*/\n if (state.wrap) { /* to support ill-conceived Java test suite */\n strm.adler = state.wrap & 1;\n }\n state.mode = HEAD;\n state.last = 0;\n state.havedict = 0;\n state.dmax = 32768;\n state.head = null/*Z_NULL*/;\n state.hold = 0;\n state.bits = 0;\n //state.lencode = state.distcode = state.next = state.codes;\n state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);\n state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);\n\n state.sane = 1;\n state.back = -1;\n //Tracev((stderr, \"inflate: reset\\n\"));\n return Z_OK;\n}\n\nfunction inflateReset(strm) {\n var state;\n\n if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n state = strm.state;\n state.wsize = 0;\n state.whave = 0;\n state.wnext = 0;\n return inflateResetKeep(strm);\n\n}\n\nfunction inflateReset2(strm, windowBits) {\n var wrap;\n var state;\n\n /* get the state */\n if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n state = strm.state;\n\n /* extract wrap request from windowBits parameter */\n if (windowBits < 0) {\n wrap = 0;\n windowBits = -windowBits;\n }\n else {\n wrap = (windowBits >> 4) + 1;\n if (windowBits < 48) {\n windowBits &= 15;\n }\n }\n\n /* set number of window bits, free window if different */\n if (windowBits && (windowBits < 8 || windowBits > 15)) {\n return Z_STREAM_ERROR;\n }\n if (state.window !== null && state.wbits !== windowBits) {\n state.window = null;\n }\n\n /* update state and reset the rest of it */\n state.wrap = wrap;\n state.wbits = windowBits;\n return inflateReset(strm);\n}\n\nfunction inflateInit2(strm, windowBits) {\n var ret;\n var state;\n\n if (!strm) { return Z_STREAM_ERROR; }\n //strm.msg = Z_NULL; /* in case we return an error */\n\n state = new InflateState();\n\n //if (state === Z_NULL) return Z_MEM_ERROR;\n //Tracev((stderr, \"inflate: allocated\\n\"));\n strm.state = state;\n state.window = null/*Z_NULL*/;\n ret = inflateReset2(strm, windowBits);\n if (ret !== Z_OK) {\n strm.state = null/*Z_NULL*/;\n }\n return ret;\n}\n\nfunction inflateInit(strm) {\n return inflateInit2(strm, DEF_WBITS);\n}\n\n\n/*\n Return state with length and distance decoding tables and index sizes set to\n fixed code decoding. Normally this returns fixed tables from inffixed.h.\n If BUILDFIXED is defined, then instead this routine builds the tables the\n first time it's called, and returns those tables the first time and\n thereafter. This reduces the size of the code by about 2K bytes, in\n exchange for a little execution time. However, BUILDFIXED should not be\n used for threaded applications, since the rewriting of the tables and virgin\n may not be thread-safe.\n */\nvar virgin = true;\n\nvar lenfix, distfix; // We have no pointers in JS, so keep tables separate\n\nfunction fixedtables(state) {\n /* build fixed huffman tables if first call (may not be thread safe) */\n if (virgin) {\n var sym;\n\n lenfix = new utils.Buf32(512);\n distfix = new utils.Buf32(32);\n\n /* literal/length table */\n sym = 0;\n while (sym < 144) { state.lens[sym++] = 8; }\n while (sym < 256) { state.lens[sym++] = 9; }\n while (sym < 280) { state.lens[sym++] = 7; }\n while (sym < 288) { state.lens[sym++] = 8; }\n\n inflate_table(LENS, state.lens, 0, 288, lenfix, 0, state.work, { bits: 9 });\n\n /* distance table */\n sym = 0;\n while (sym < 32) { state.lens[sym++] = 5; }\n\n inflate_table(DISTS, state.lens, 0, 32, distfix, 0, state.work, { bits: 5 });\n\n /* do this just once */\n virgin = false;\n }\n\n state.lencode = lenfix;\n state.lenbits = 9;\n state.distcode = distfix;\n state.distbits = 5;\n}\n\n\n/*\n Update the window with the last wsize (normally 32K) bytes written before\n returning. If window does not exist yet, create it. This is only called\n when a window is already in use, or when output has been written during this\n inflate call, but the end of the deflate stream has not been reached yet.\n It is also called to create a window for dictionary data when a dictionary\n is loaded.\n\n Providing output buffers larger than 32K to inflate() should provide a speed\n advantage, since only the last 32K of output is copied to the sliding window\n upon return from inflate(), and since all distances after the first 32K of\n output will fall in the output data, making match copies simpler and faster.\n The advantage may be dependent on the size of the processor's data caches.\n */\nfunction updatewindow(strm, src, end, copy) {\n var dist;\n var state = strm.state;\n\n /* if it hasn't been done already, allocate space for the window */\n if (state.window === null) {\n state.wsize = 1 << state.wbits;\n state.wnext = 0;\n state.whave = 0;\n\n state.window = new utils.Buf8(state.wsize);\n }\n\n /* copy state->wsize or less output bytes into the circular window */\n if (copy >= state.wsize) {\n utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0);\n state.wnext = 0;\n state.whave = state.wsize;\n }\n else {\n dist = state.wsize - state.wnext;\n if (dist > copy) {\n dist = copy;\n }\n //zmemcpy(state->window + state->wnext, end - copy, dist);\n utils.arraySet(state.window, src, end - copy, dist, state.wnext);\n copy -= dist;\n if (copy) {\n //zmemcpy(state->window, end - copy, copy);\n utils.arraySet(state.window, src, end - copy, copy, 0);\n state.wnext = copy;\n state.whave = state.wsize;\n }\n else {\n state.wnext += dist;\n if (state.wnext === state.wsize) { state.wnext = 0; }\n if (state.whave < state.wsize) { state.whave += dist; }\n }\n }\n return 0;\n}\n\nfunction inflate(strm, flush) {\n var state;\n var input, output; // input/output buffers\n var next; /* next input INDEX */\n var put; /* next output INDEX */\n var have, left; /* available input and output */\n var hold; /* bit buffer */\n var bits; /* bits in bit buffer */\n var _in, _out; /* save starting available input and output */\n var copy; /* number of stored or match bytes to copy */\n var from; /* where to copy match bytes from */\n var from_source;\n var here = 0; /* current decoding table entry */\n var here_bits, here_op, here_val; // paked \"here\" denormalized (JS specific)\n //var last; /* parent table entry */\n var last_bits, last_op, last_val; // paked \"last\" denormalized (JS specific)\n var len; /* length to copy for repeats, bits to drop */\n var ret; /* return code */\n var hbuf = new utils.Buf8(4); /* buffer for gzip header crc calculation */\n var opts;\n\n var n; // temporary var for NEED_BITS\n\n var order = /* permutation of code lengths */\n [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];\n\n\n if (!strm || !strm.state || !strm.output ||\n (!strm.input && strm.avail_in !== 0)) {\n return Z_STREAM_ERROR;\n }\n\n state = strm.state;\n if (state.mode === TYPE) { state.mode = TYPEDO; } /* skip check */\n\n\n //--- LOAD() ---\n put = strm.next_out;\n output = strm.output;\n left = strm.avail_out;\n next = strm.next_in;\n input = strm.input;\n have = strm.avail_in;\n hold = state.hold;\n bits = state.bits;\n //---\n\n _in = have;\n _out = left;\n ret = Z_OK;\n\n inf_leave: // goto emulation\n for (;;) {\n switch (state.mode) {\n case HEAD:\n if (state.wrap === 0) {\n state.mode = TYPEDO;\n break;\n }\n //=== NEEDBITS(16);\n while (bits < 16) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n if ((state.wrap & 2) && hold === 0x8b1f) { /* gzip header */\n state.check = 0/*crc32(0L, Z_NULL, 0)*/;\n //=== CRC2(state.check, hold);\n hbuf[0] = hold & 0xff;\n hbuf[1] = (hold >>> 8) & 0xff;\n state.check = crc32(state.check, hbuf, 2, 0);\n //===//\n\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n state.mode = FLAGS;\n break;\n }\n state.flags = 0; /* expect zlib header */\n if (state.head) {\n state.head.done = false;\n }\n if (!(state.wrap & 1) || /* check if zlib header allowed */\n (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {\n strm.msg = 'incorrect header check';\n state.mode = BAD;\n break;\n }\n if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {\n strm.msg = 'unknown compression method';\n state.mode = BAD;\n break;\n }\n //--- DROPBITS(4) ---//\n hold >>>= 4;\n bits -= 4;\n //---//\n len = (hold & 0x0f)/*BITS(4)*/ + 8;\n if (state.wbits === 0) {\n state.wbits = len;\n }\n else if (len > state.wbits) {\n strm.msg = 'invalid window size';\n state.mode = BAD;\n break;\n }\n state.dmax = 1 << len;\n //Tracev((stderr, \"inflate: zlib header ok\\n\"));\n strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n state.mode = hold & 0x200 ? DICTID : TYPE;\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n break;\n case FLAGS:\n //=== NEEDBITS(16); */\n while (bits < 16) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n state.flags = hold;\n if ((state.flags & 0xff) !== Z_DEFLATED) {\n strm.msg = 'unknown compression method';\n state.mode = BAD;\n break;\n }\n if (state.flags & 0xe000) {\n strm.msg = 'unknown header flags set';\n state.mode = BAD;\n break;\n }\n if (state.head) {\n state.head.text = ((hold >> 8) & 1);\n }\n if (state.flags & 0x0200) {\n //=== CRC2(state.check, hold);\n hbuf[0] = hold & 0xff;\n hbuf[1] = (hold >>> 8) & 0xff;\n state.check = crc32(state.check, hbuf, 2, 0);\n //===//\n }\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n state.mode = TIME;\n /* falls through */\n case TIME:\n //=== NEEDBITS(32); */\n while (bits < 32) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n if (state.head) {\n state.head.time = hold;\n }\n if (state.flags & 0x0200) {\n //=== CRC4(state.check, hold)\n hbuf[0] = hold & 0xff;\n hbuf[1] = (hold >>> 8) & 0xff;\n hbuf[2] = (hold >>> 16) & 0xff;\n hbuf[3] = (hold >>> 24) & 0xff;\n state.check = crc32(state.check, hbuf, 4, 0);\n //===\n }\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n state.mode = OS;\n /* falls through */\n case OS:\n //=== NEEDBITS(16); */\n while (bits < 16) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n if (state.head) {\n state.head.xflags = (hold & 0xff);\n state.head.os = (hold >> 8);\n }\n if (state.flags & 0x0200) {\n //=== CRC2(state.check, hold);\n hbuf[0] = hold & 0xff;\n hbuf[1] = (hold >>> 8) & 0xff;\n state.check = crc32(state.check, hbuf, 2, 0);\n //===//\n }\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n state.mode = EXLEN;\n /* falls through */\n case EXLEN:\n if (state.flags & 0x0400) {\n //=== NEEDBITS(16); */\n while (bits < 16) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n state.length = hold;\n if (state.head) {\n state.head.extra_len = hold;\n }\n if (state.flags & 0x0200) {\n //=== CRC2(state.check, hold);\n hbuf[0] = hold & 0xff;\n hbuf[1] = (hold >>> 8) & 0xff;\n state.check = crc32(state.check, hbuf, 2, 0);\n //===//\n }\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n }\n else if (state.head) {\n state.head.extra = null/*Z_NULL*/;\n }\n state.mode = EXTRA;\n /* falls through */\n case EXTRA:\n if (state.flags & 0x0400) {\n copy = state.length;\n if (copy > have) { copy = have; }\n if (copy) {\n if (state.head) {\n len = state.head.extra_len - state.length;\n if (!state.head.extra) {\n // Use untyped array for more convenient processing later\n state.head.extra = new Array(state.head.extra_len);\n }\n utils.arraySet(\n state.head.extra,\n input,\n next,\n // extra field is limited to 65536 bytes\n // - no need for additional size check\n copy,\n /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/\n len\n );\n //zmemcpy(state.head.extra + len, next,\n // len + copy > state.head.extra_max ?\n // state.head.extra_max - len : copy);\n }\n if (state.flags & 0x0200) {\n state.check = crc32(state.check, input, copy, next);\n }\n have -= copy;\n next += copy;\n state.length -= copy;\n }\n if (state.length) { break inf_leave; }\n }\n state.length = 0;\n state.mode = NAME;\n /* falls through */\n case NAME:\n if (state.flags & 0x0800) {\n if (have === 0) { break inf_leave; }\n copy = 0;\n do {\n // TODO: 2 or 1 bytes?\n len = input[next + copy++];\n /* use constant limit because in js we should not preallocate memory */\n if (state.head && len &&\n (state.length < 65536 /*state.head.name_max*/)) {\n state.head.name += String.fromCharCode(len);\n }\n } while (len && copy < have);\n\n if (state.flags & 0x0200) {\n state.check = crc32(state.check, input, copy, next);\n }\n have -= copy;\n next += copy;\n if (len) { break inf_leave; }\n }\n else if (state.head) {\n state.head.name = null;\n }\n state.length = 0;\n state.mode = COMMENT;\n /* falls through */\n case COMMENT:\n if (state.flags & 0x1000) {\n if (have === 0) { break inf_leave; }\n copy = 0;\n do {\n len = input[next + copy++];\n /* use constant limit because in js we should not preallocate memory */\n if (state.head && len &&\n (state.length < 65536 /*state.head.comm_max*/)) {\n state.head.comment += String.fromCharCode(len);\n }\n } while (len && copy < have);\n if (state.flags & 0x0200) {\n state.check = crc32(state.check, input, copy, next);\n }\n have -= copy;\n next += copy;\n if (len) { break inf_leave; }\n }\n else if (state.head) {\n state.head.comment = null;\n }\n state.mode = HCRC;\n /* falls through */\n case HCRC:\n if (state.flags & 0x0200) {\n //=== NEEDBITS(16); */\n while (bits < 16) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n if (hold !== (state.check & 0xffff)) {\n strm.msg = 'header crc mismatch';\n state.mode = BAD;\n break;\n }\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n }\n if (state.head) {\n state.head.hcrc = ((state.flags >> 9) & 1);\n state.head.done = true;\n }\n strm.adler = state.check = 0;\n state.mode = TYPE;\n break;\n case DICTID:\n //=== NEEDBITS(32); */\n while (bits < 32) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n strm.adler = state.check = zswap32(hold);\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n state.mode = DICT;\n /* falls through */\n case DICT:\n if (state.havedict === 0) {\n //--- RESTORE() ---\n strm.next_out = put;\n strm.avail_out = left;\n strm.next_in = next;\n strm.avail_in = have;\n state.hold = hold;\n state.bits = bits;\n //---\n return Z_NEED_DICT;\n }\n strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n state.mode = TYPE;\n /* falls through */\n case TYPE:\n if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }\n /* falls through */\n case TYPEDO:\n if (state.last) {\n //--- BYTEBITS() ---//\n hold >>>= bits & 7;\n bits -= bits & 7;\n //---//\n state.mode = CHECK;\n break;\n }\n //=== NEEDBITS(3); */\n while (bits < 3) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n state.last = (hold & 0x01)/*BITS(1)*/;\n //--- DROPBITS(1) ---//\n hold >>>= 1;\n bits -= 1;\n //---//\n\n switch ((hold & 0x03)/*BITS(2)*/) {\n case 0: /* stored block */\n //Tracev((stderr, \"inflate: stored block%s\\n\",\n // state.last ? \" (last)\" : \"\"));\n state.mode = STORED;\n break;\n case 1: /* fixed block */\n fixedtables(state);\n //Tracev((stderr, \"inflate: fixed codes block%s\\n\",\n // state.last ? \" (last)\" : \"\"));\n state.mode = LEN_; /* decode codes */\n if (flush === Z_TREES) {\n //--- DROPBITS(2) ---//\n hold >>>= 2;\n bits -= 2;\n //---//\n break inf_leave;\n }\n break;\n case 2: /* dynamic block */\n //Tracev((stderr, \"inflate: dynamic codes block%s\\n\",\n // state.last ? \" (last)\" : \"\"));\n state.mode = TABLE;\n break;\n case 3:\n strm.msg = 'invalid block type';\n state.mode = BAD;\n }\n //--- DROPBITS(2) ---//\n hold >>>= 2;\n bits -= 2;\n //---//\n break;\n case STORED:\n //--- BYTEBITS() ---// /* go to byte boundary */\n hold >>>= bits & 7;\n bits -= bits & 7;\n //---//\n //=== NEEDBITS(32); */\n while (bits < 32) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {\n strm.msg = 'invalid stored block lengths';\n state.mode = BAD;\n break;\n }\n state.length = hold & 0xffff;\n //Tracev((stderr, \"inflate: stored length %u\\n\",\n // state.length));\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n state.mode = COPY_;\n if (flush === Z_TREES) { break inf_leave; }\n /* falls through */\n case COPY_:\n state.mode = COPY;\n /* falls through */\n case COPY:\n copy = state.length;\n if (copy) {\n if (copy > have) { copy = have; }\n if (copy > left) { copy = left; }\n if (copy === 0) { break inf_leave; }\n //--- zmemcpy(put, next, copy); ---\n utils.arraySet(output, input, next, copy, put);\n //---//\n have -= copy;\n next += copy;\n left -= copy;\n put += copy;\n state.length -= copy;\n break;\n }\n //Tracev((stderr, \"inflate: stored end\\n\"));\n state.mode = TYPE;\n break;\n case TABLE:\n //=== NEEDBITS(14); */\n while (bits < 14) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;\n //--- DROPBITS(5) ---//\n hold >>>= 5;\n bits -= 5;\n //---//\n state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;\n //--- DROPBITS(5) ---//\n hold >>>= 5;\n bits -= 5;\n //---//\n state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;\n //--- DROPBITS(4) ---//\n hold >>>= 4;\n bits -= 4;\n //---//\n//#ifndef PKZIP_BUG_WORKAROUND\n if (state.nlen > 286 || state.ndist > 30) {\n strm.msg = 'too many length or distance symbols';\n state.mode = BAD;\n break;\n }\n//#endif\n //Tracev((stderr, \"inflate: table sizes ok\\n\"));\n state.have = 0;\n state.mode = LENLENS;\n /* falls through */\n case LENLENS:\n while (state.have < state.ncode) {\n //=== NEEDBITS(3);\n while (bits < 3) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);\n //--- DROPBITS(3) ---//\n hold >>>= 3;\n bits -= 3;\n //---//\n }\n while (state.have < 19) {\n state.lens[order[state.have++]] = 0;\n }\n // We have separate tables & no pointers. 2 commented lines below not needed.\n //state.next = state.codes;\n //state.lencode = state.next;\n // Switch to use dynamic table\n state.lencode = state.lendyn;\n state.lenbits = 7;\n\n opts = { bits: state.lenbits };\n ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);\n state.lenbits = opts.bits;\n\n if (ret) {\n strm.msg = 'invalid code lengths set';\n state.mode = BAD;\n break;\n }\n //Tracev((stderr, \"inflate: code lengths ok\\n\"));\n state.have = 0;\n state.mode = CODELENS;\n /* falls through */\n case CODELENS:\n while (state.have < state.nlen + state.ndist) {\n for (;;) {\n here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/\n here_bits = here >>> 24;\n here_op = (here >>> 16) & 0xff;\n here_val = here & 0xffff;\n\n if ((here_bits) <= bits) { break; }\n //--- PULLBYTE() ---//\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n //---//\n }\n if (here_val < 16) {\n //--- DROPBITS(here.bits) ---//\n hold >>>= here_bits;\n bits -= here_bits;\n //---//\n state.lens[state.have++] = here_val;\n }\n else {\n if (here_val === 16) {\n //=== NEEDBITS(here.bits + 2);\n n = here_bits + 2;\n while (bits < n) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n //--- DROPBITS(here.bits) ---//\n hold >>>= here_bits;\n bits -= here_bits;\n //---//\n if (state.have === 0) {\n strm.msg = 'invalid bit length repeat';\n state.mode = BAD;\n break;\n }\n len = state.lens[state.have - 1];\n copy = 3 + (hold & 0x03);//BITS(2);\n //--- DROPBITS(2) ---//\n hold >>>= 2;\n bits -= 2;\n //---//\n }\n else if (here_val === 17) {\n //=== NEEDBITS(here.bits + 3);\n n = here_bits + 3;\n while (bits < n) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n //--- DROPBITS(here.bits) ---//\n hold >>>= here_bits;\n bits -= here_bits;\n //---//\n len = 0;\n copy = 3 + (hold & 0x07);//BITS(3);\n //--- DROPBITS(3) ---//\n hold >>>= 3;\n bits -= 3;\n //---//\n }\n else {\n //=== NEEDBITS(here.bits + 7);\n n = here_bits + 7;\n while (bits < n) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n //--- DROPBITS(here.bits) ---//\n hold >>>= here_bits;\n bits -= here_bits;\n //---//\n len = 0;\n copy = 11 + (hold & 0x7f);//BITS(7);\n //--- DROPBITS(7) ---//\n hold >>>= 7;\n bits -= 7;\n //---//\n }\n if (state.have + copy > state.nlen + state.ndist) {\n strm.msg = 'invalid bit length repeat';\n state.mode = BAD;\n break;\n }\n while (copy--) {\n state.lens[state.have++] = len;\n }\n }\n }\n\n /* handle error breaks in while */\n if (state.mode === BAD) { break; }\n\n /* check for end-of-block code (better have one) */\n if (state.lens[256] === 0) {\n strm.msg = 'invalid code -- missing end-of-block';\n state.mode = BAD;\n break;\n }\n\n /* build code tables -- note: do not change the lenbits or distbits\n values here (9 and 6) without reading the comments in inftrees.h\n concerning the ENOUGH constants, which depend on those values */\n state.lenbits = 9;\n\n opts = { bits: state.lenbits };\n ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);\n // We have separate tables & no pointers. 2 commented lines below not needed.\n // state.next_index = opts.table_index;\n state.lenbits = opts.bits;\n // state.lencode = state.next;\n\n if (ret) {\n strm.msg = 'invalid literal/lengths set';\n state.mode = BAD;\n break;\n }\n\n state.distbits = 6;\n //state.distcode.copy(state.codes);\n // Switch to use dynamic table\n state.distcode = state.distdyn;\n opts = { bits: state.distbits };\n ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);\n // We have separate tables & no pointers. 2 commented lines below not needed.\n // state.next_index = opts.table_index;\n state.distbits = opts.bits;\n // state.distcode = state.next;\n\n if (ret) {\n strm.msg = 'invalid distances set';\n state.mode = BAD;\n break;\n }\n //Tracev((stderr, 'inflate: codes ok\\n'));\n state.mode = LEN_;\n if (flush === Z_TREES) { break inf_leave; }\n /* falls through */\n case LEN_:\n state.mode = LEN;\n /* falls through */\n case LEN:\n if (have >= 6 && left >= 258) {\n //--- RESTORE() ---\n strm.next_out = put;\n strm.avail_out = left;\n strm.next_in = next;\n strm.avail_in = have;\n state.hold = hold;\n state.bits = bits;\n //---\n inflate_fast(strm, _out);\n //--- LOAD() ---\n put = strm.next_out;\n output = strm.output;\n left = strm.avail_out;\n next = strm.next_in;\n input = strm.input;\n have = strm.avail_in;\n hold = state.hold;\n bits = state.bits;\n //---\n\n if (state.mode === TYPE) {\n state.back = -1;\n }\n break;\n }\n state.back = 0;\n for (;;) {\n here = state.lencode[hold & ((1 << state.lenbits) - 1)]; /*BITS(state.lenbits)*/\n here_bits = here >>> 24;\n here_op = (here >>> 16) & 0xff;\n here_val = here & 0xffff;\n\n if (here_bits <= bits) { break; }\n //--- PULLBYTE() ---//\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n //---//\n }\n if (here_op && (here_op & 0xf0) === 0) {\n last_bits = here_bits;\n last_op = here_op;\n last_val = here_val;\n for (;;) {\n here = state.lencode[last_val +\n ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n here_bits = here >>> 24;\n here_op = (here >>> 16) & 0xff;\n here_val = here & 0xffff;\n\n if ((last_bits + here_bits) <= bits) { break; }\n //--- PULLBYTE() ---//\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n //---//\n }\n //--- DROPBITS(last.bits) ---//\n hold >>>= last_bits;\n bits -= last_bits;\n //---//\n state.back += last_bits;\n }\n //--- DROPBITS(here.bits) ---//\n hold >>>= here_bits;\n bits -= here_bits;\n //---//\n state.back += here_bits;\n state.length = here_val;\n if (here_op === 0) {\n //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n // \"inflate: literal '%c'\\n\" :\n // \"inflate: literal 0x%02x\\n\", here.val));\n state.mode = LIT;\n break;\n }\n if (here_op & 32) {\n //Tracevv((stderr, \"inflate: end of block\\n\"));\n state.back = -1;\n state.mode = TYPE;\n break;\n }\n if (here_op & 64) {\n strm.msg = 'invalid literal/length code';\n state.mode = BAD;\n break;\n }\n state.extra = here_op & 15;\n state.mode = LENEXT;\n /* falls through */\n case LENEXT:\n if (state.extra) {\n //=== NEEDBITS(state.extra);\n n = state.extra;\n while (bits < n) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n //--- DROPBITS(state.extra) ---//\n hold >>>= state.extra;\n bits -= state.extra;\n //---//\n state.back += state.extra;\n }\n //Tracevv((stderr, \"inflate: length %u\\n\", state.length));\n state.was = state.length;\n state.mode = DIST;\n /* falls through */\n case DIST:\n for (;;) {\n here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/\n here_bits = here >>> 24;\n here_op = (here >>> 16) & 0xff;\n here_val = here & 0xffff;\n\n if ((here_bits) <= bits) { break; }\n //--- PULLBYTE() ---//\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n //---//\n }\n if ((here_op & 0xf0) === 0) {\n last_bits = here_bits;\n last_op = here_op;\n last_val = here_val;\n for (;;) {\n here = state.distcode[last_val +\n ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n here_bits = here >>> 24;\n here_op = (here >>> 16) & 0xff;\n here_val = here & 0xffff;\n\n if ((last_bits + here_bits) <= bits) { break; }\n //--- PULLBYTE() ---//\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n //---//\n }\n //--- DROPBITS(last.bits) ---//\n hold >>>= last_bits;\n bits -= last_bits;\n //---//\n state.back += last_bits;\n }\n //--- DROPBITS(here.bits) ---//\n hold >>>= here_bits;\n bits -= here_bits;\n //---//\n state.back += here_bits;\n if (here_op & 64) {\n strm.msg = 'invalid distance code';\n state.mode = BAD;\n break;\n }\n state.offset = here_val;\n state.extra = (here_op) & 15;\n state.mode = DISTEXT;\n /* falls through */\n case DISTEXT:\n if (state.extra) {\n //=== NEEDBITS(state.extra);\n n = state.extra;\n while (bits < n) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n //--- DROPBITS(state.extra) ---//\n hold >>>= state.extra;\n bits -= state.extra;\n //---//\n state.back += state.extra;\n }\n//#ifdef INFLATE_STRICT\n if (state.offset > state.dmax) {\n strm.msg = 'invalid distance too far back';\n state.mode = BAD;\n break;\n }\n//#endif\n //Tracevv((stderr, \"inflate: distance %u\\n\", state.offset));\n state.mode = MATCH;\n /* falls through */\n case MATCH:\n if (left === 0) { break inf_leave; }\n copy = _out - left;\n if (state.offset > copy) { /* copy from window */\n copy = state.offset - copy;\n if (copy > state.whave) {\n if (state.sane) {\n strm.msg = 'invalid distance too far back';\n state.mode = BAD;\n break;\n }\n// (!) This block is disabled in zlib defaults,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n// Trace((stderr, \"inflate.c too far\\n\"));\n// copy -= state.whave;\n// if (copy > state.length) { copy = state.length; }\n// if (copy > left) { copy = left; }\n// left -= copy;\n// state.length -= copy;\n// do {\n// output[put++] = 0;\n// } while (--copy);\n// if (state.length === 0) { state.mode = LEN; }\n// break;\n//#endif\n }\n if (copy > state.wnext) {\n copy -= state.wnext;\n from = state.wsize - copy;\n }\n else {\n from = state.wnext - copy;\n }\n if (copy > state.length) { copy = state.length; }\n from_source = state.window;\n }\n else { /* copy from output */\n from_source = output;\n from = put - state.offset;\n copy = state.length;\n }\n if (copy > left) { copy = left; }\n left -= copy;\n state.length -= copy;\n do {\n output[put++] = from_source[from++];\n } while (--copy);\n if (state.length === 0) { state.mode = LEN; }\n break;\n case LIT:\n if (left === 0) { break inf_leave; }\n output[put++] = state.length;\n left--;\n state.mode = LEN;\n break;\n case CHECK:\n if (state.wrap) {\n //=== NEEDBITS(32);\n while (bits < 32) {\n if (have === 0) { break inf_leave; }\n have--;\n // Use '|' instead of '+' to make sure that result is signed\n hold |= input[next++] << bits;\n bits += 8;\n }\n //===//\n _out -= left;\n strm.total_out += _out;\n state.total += _out;\n if (_out) {\n strm.adler = state.check =\n /*UPDATE(state.check, put - _out, _out);*/\n (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));\n\n }\n _out = left;\n // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too\n if ((state.flags ? hold : zswap32(hold)) !== state.check) {\n strm.msg = 'incorrect data check';\n state.mode = BAD;\n break;\n }\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n //Tracev((stderr, \"inflate: check matches trailer\\n\"));\n }\n state.mode = LENGTH;\n /* falls through */\n case LENGTH:\n if (state.wrap && state.flags) {\n //=== NEEDBITS(32);\n while (bits < 32) {\n if (have === 0) { break inf_leave; }\n have--;\n hold += input[next++] << bits;\n bits += 8;\n }\n //===//\n if (hold !== (state.total & 0xffffffff)) {\n strm.msg = 'incorrect length check';\n state.mode = BAD;\n break;\n }\n //=== INITBITS();\n hold = 0;\n bits = 0;\n //===//\n //Tracev((stderr, \"inflate: length matches trailer\\n\"));\n }\n state.mode = DONE;\n /* falls through */\n case DONE:\n ret = Z_STREAM_END;\n break inf_leave;\n case BAD:\n ret = Z_DATA_ERROR;\n break inf_leave;\n case MEM:\n return Z_MEM_ERROR;\n case SYNC:\n /* falls through */\n default:\n return Z_STREAM_ERROR;\n }\n }\n\n // inf_leave <- here is real place for \"goto inf_leave\", emulated via \"break inf_leave\"\n\n /*\n Return from inflate(), updating the total counts and the check value.\n If there was no progress during the inflate() call, return a buffer\n error. Call updatewindow() to create and/or update the window state.\n Note: a memory error from inflate() is non-recoverable.\n */\n\n //--- RESTORE() ---\n strm.next_out = put;\n strm.avail_out = left;\n strm.next_in = next;\n strm.avail_in = have;\n state.hold = hold;\n state.bits = bits;\n //---\n\n if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&\n (state.mode < CHECK || flush !== Z_FINISH))) {\n if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {\n state.mode = MEM;\n return Z_MEM_ERROR;\n }\n }\n _in -= strm.avail_in;\n _out -= strm.avail_out;\n strm.total_in += _in;\n strm.total_out += _out;\n state.total += _out;\n if (state.wrap && _out) {\n strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/\n (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));\n }\n strm.data_type = state.bits + (state.last ? 64 : 0) +\n (state.mode === TYPE ? 128 : 0) +\n (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);\n if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {\n ret = Z_BUF_ERROR;\n }\n return ret;\n}\n\nfunction inflateEnd(strm) {\n\n if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {\n return Z_STREAM_ERROR;\n }\n\n var state = strm.state;\n if (state.window) {\n state.window = null;\n }\n strm.state = null;\n return Z_OK;\n}\n\nfunction inflateGetHeader(strm, head) {\n var state;\n\n /* check state */\n if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n state = strm.state;\n if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }\n\n /* save header structure */\n state.head = head;\n head.done = false;\n return Z_OK;\n}\n\nfunction inflateSetDictionary(strm, dictionary) {\n var dictLength = dictionary.length;\n\n var state;\n var dictid;\n var ret;\n\n /* check state */\n if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }\n state = strm.state;\n\n if (state.wrap !== 0 && state.mode !== DICT) {\n return Z_STREAM_ERROR;\n }\n\n /* check for correct dictionary identifier */\n if (state.mode === DICT) {\n dictid = 1; /* adler32(0, null, 0)*/\n /* dictid = adler32(dictid, dictionary, dictLength); */\n dictid = adler32(dictid, dictionary, dictLength, 0);\n if (dictid !== state.check) {\n return Z_DATA_ERROR;\n }\n }\n /* copy dictionary to window using updatewindow(), which will amend the\n existing dictionary if appropriate */\n ret = updatewindow(strm, dictionary, dictLength, dictLength);\n if (ret) {\n state.mode = MEM;\n return Z_MEM_ERROR;\n }\n state.havedict = 1;\n // Tracev((stderr, \"inflate: dictionary set\\n\"));\n return Z_OK;\n}\n\nexports.inflateReset = inflateReset;\nexports.inflateReset2 = inflateReset2;\nexports.inflateResetKeep = inflateResetKeep;\nexports.inflateInit = inflateInit;\nexports.inflateInit2 = inflateInit2;\nexports.inflate = inflate;\nexports.inflateEnd = inflateEnd;\nexports.inflateGetHeader = inflateGetHeader;\nexports.inflateSetDictionary = inflateSetDictionary;\nexports.inflateInfo = 'pako inflate (from Nodeca project)';\n\n/* Not implemented\nexports.inflateCopy = inflateCopy;\nexports.inflateGetDictionary = inflateGetDictionary;\nexports.inflateMark = inflateMark;\nexports.inflatePrime = inflatePrime;\nexports.inflateSync = inflateSync;\nexports.inflateSyncPoint = inflateSyncPoint;\nexports.inflateUndermine = inflateUndermine;\n*/\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// See state defs from inflate.js\nvar BAD = 30; /* got a data error -- remain here until reset */\nvar TYPE = 12; /* i: waiting for type bits, including last-flag bit */\n\n/*\n Decode literal, length, and distance codes and write out the resulting\n literal and match bytes until either not enough input or output is\n available, an end-of-block is encountered, or a data error is encountered.\n When large enough input and output buffers are supplied to inflate(), for\n example, a 16K input buffer and a 64K output buffer, more than 95% of the\n inflate execution time is spent in this routine.\n\n Entry assumptions:\n\n state.mode === LEN\n strm.avail_in >= 6\n strm.avail_out >= 258\n start >= strm.avail_out\n state.bits < 8\n\n On return, state.mode is one of:\n\n LEN -- ran out of enough output space or enough available input\n TYPE -- reached end of block code, inflate() to interpret next block\n BAD -- error in block data\n\n Notes:\n\n - The maximum input bits used by a length/distance pair is 15 bits for the\n length code, 5 bits for the length extra, 15 bits for the distance code,\n and 13 bits for the distance extra. This totals 48 bits, or six bytes.\n Therefore if strm.avail_in >= 6, then there is enough input to avoid\n checking for available input while decoding.\n\n - The maximum bytes that a single length/distance pair can output is 258\n bytes, which is the maximum length that can be coded. inflate_fast()\n requires strm.avail_out >= 258 for each loop to avoid checking for\n output space.\n */\nmodule.exports = function inflate_fast(strm, start) {\n var state;\n var _in; /* local strm.input */\n var last; /* have enough input while in < last */\n var _out; /* local strm.output */\n var beg; /* inflate()'s initial strm.output */\n var end; /* while out < end, enough space available */\n//#ifdef INFLATE_STRICT\n var dmax; /* maximum distance from zlib header */\n//#endif\n var wsize; /* window size or zero if not using window */\n var whave; /* valid bytes in the window */\n var wnext; /* window write index */\n // Use `s_window` instead `window`, avoid conflict with instrumentation tools\n var s_window; /* allocated sliding window, if wsize != 0 */\n var hold; /* local strm.hold */\n var bits; /* local strm.bits */\n var lcode; /* local strm.lencode */\n var dcode; /* local strm.distcode */\n var lmask; /* mask for first level of length codes */\n var dmask; /* mask for first level of distance codes */\n var here; /* retrieved table entry */\n var op; /* code bits, operation, extra bits, or */\n /* window position, window bytes to copy */\n var len; /* match length, unused bytes */\n var dist; /* match distance */\n var from; /* where to copy match from */\n var from_source;\n\n\n var input, output; // JS specific, because we have no pointers\n\n /* copy state to local variables */\n state = strm.state;\n //here = state.here;\n _in = strm.next_in;\n input = strm.input;\n last = _in + (strm.avail_in - 5);\n _out = strm.next_out;\n output = strm.output;\n beg = _out - (start - strm.avail_out);\n end = _out + (strm.avail_out - 257);\n//#ifdef INFLATE_STRICT\n dmax = state.dmax;\n//#endif\n wsize = state.wsize;\n whave = state.whave;\n wnext = state.wnext;\n s_window = state.window;\n hold = state.hold;\n bits = state.bits;\n lcode = state.lencode;\n dcode = state.distcode;\n lmask = (1 << state.lenbits) - 1;\n dmask = (1 << state.distbits) - 1;\n\n\n /* decode literals and length/distances until end-of-block or not enough\n input data or output space */\n\n top:\n do {\n if (bits < 15) {\n hold += input[_in++] << bits;\n bits += 8;\n hold += input[_in++] << bits;\n bits += 8;\n }\n\n here = lcode[hold & lmask];\n\n dolen:\n for (;;) { // Goto emulation\n op = here >>> 24/*here.bits*/;\n hold >>>= op;\n bits -= op;\n op = (here >>> 16) & 0xff/*here.op*/;\n if (op === 0) { /* literal */\n //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n // \"inflate: literal '%c'\\n\" :\n // \"inflate: literal 0x%02x\\n\", here.val));\n output[_out++] = here & 0xffff/*here.val*/;\n }\n else if (op & 16) { /* length base */\n len = here & 0xffff/*here.val*/;\n op &= 15; /* number of extra bits */\n if (op) {\n if (bits < op) {\n hold += input[_in++] << bits;\n bits += 8;\n }\n len += hold & ((1 << op) - 1);\n hold >>>= op;\n bits -= op;\n }\n //Tracevv((stderr, \"inflate: length %u\\n\", len));\n if (bits < 15) {\n hold += input[_in++] << bits;\n bits += 8;\n hold += input[_in++] << bits;\n bits += 8;\n }\n here = dcode[hold & dmask];\n\n dodist:\n for (;;) { // goto emulation\n op = here >>> 24/*here.bits*/;\n hold >>>= op;\n bits -= op;\n op = (here >>> 16) & 0xff/*here.op*/;\n\n if (op & 16) { /* distance base */\n dist = here & 0xffff/*here.val*/;\n op &= 15; /* number of extra bits */\n if (bits < op) {\n hold += input[_in++] << bits;\n bits += 8;\n if (bits < op) {\n hold += input[_in++] << bits;\n bits += 8;\n }\n }\n dist += hold & ((1 << op) - 1);\n//#ifdef INFLATE_STRICT\n if (dist > dmax) {\n strm.msg = 'invalid distance too far back';\n state.mode = BAD;\n break top;\n }\n//#endif\n hold >>>= op;\n bits -= op;\n //Tracevv((stderr, \"inflate: distance %u\\n\", dist));\n op = _out - beg; /* max distance in output */\n if (dist > op) { /* see if copy from window */\n op = dist - op; /* distance back in window */\n if (op > whave) {\n if (state.sane) {\n strm.msg = 'invalid distance too far back';\n state.mode = BAD;\n break top;\n }\n\n// (!) This block is disabled in zlib defaults,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n// if (len <= op - whave) {\n// do {\n// output[_out++] = 0;\n// } while (--len);\n// continue top;\n// }\n// len -= op - whave;\n// do {\n// output[_out++] = 0;\n// } while (--op > whave);\n// if (op === 0) {\n// from = _out - dist;\n// do {\n// output[_out++] = output[from++];\n// } while (--len);\n// continue top;\n// }\n//#endif\n }\n from = 0; // window index\n from_source = s_window;\n if (wnext === 0) { /* very common case */\n from += wsize - op;\n if (op < len) { /* some from window */\n len -= op;\n do {\n output[_out++] = s_window[from++];\n } while (--op);\n from = _out - dist; /* rest from output */\n from_source = output;\n }\n }\n else if (wnext < op) { /* wrap around window */\n from += wsize + wnext - op;\n op -= wnext;\n if (op < len) { /* some from end of window */\n len -= op;\n do {\n output[_out++] = s_window[from++];\n } while (--op);\n from = 0;\n if (wnext < len) { /* some from start of window */\n op = wnext;\n len -= op;\n do {\n output[_out++] = s_window[from++];\n } while (--op);\n from = _out - dist; /* rest from output */\n from_source = output;\n }\n }\n }\n else { /* contiguous in window */\n from += wnext - op;\n if (op < len) { /* some from window */\n len -= op;\n do {\n output[_out++] = s_window[from++];\n } while (--op);\n from = _out - dist; /* rest from output */\n from_source = output;\n }\n }\n while (len > 2) {\n output[_out++] = from_source[from++];\n output[_out++] = from_source[from++];\n output[_out++] = from_source[from++];\n len -= 3;\n }\n if (len) {\n output[_out++] = from_source[from++];\n if (len > 1) {\n output[_out++] = from_source[from++];\n }\n }\n }\n else {\n from = _out - dist; /* copy direct from output */\n do { /* minimum length is three */\n output[_out++] = output[from++];\n output[_out++] = output[from++];\n output[_out++] = output[from++];\n len -= 3;\n } while (len > 2);\n if (len) {\n output[_out++] = output[from++];\n if (len > 1) {\n output[_out++] = output[from++];\n }\n }\n }\n }\n else if ((op & 64) === 0) { /* 2nd level distance code */\n here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n continue dodist;\n }\n else {\n strm.msg = 'invalid distance code';\n state.mode = BAD;\n break top;\n }\n\n break; // need to emulate goto via \"continue\"\n }\n }\n else if ((op & 64) === 0) { /* 2nd level length code */\n here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n continue dolen;\n }\n else if (op & 32) { /* end-of-block */\n //Tracevv((stderr, \"inflate: end of block\\n\"));\n state.mode = TYPE;\n break top;\n }\n else {\n strm.msg = 'invalid literal/length code';\n state.mode = BAD;\n break top;\n }\n\n break; // need to emulate goto via \"continue\"\n }\n } while (_in < last && _out < end);\n\n /* return unused bytes (on entry, bits < 8, so in won't go too far back) */\n len = bits >> 3;\n _in -= len;\n bits -= len << 3;\n hold &= (1 << bits) - 1;\n\n /* update state and return */\n strm.next_in = _in;\n strm.next_out = _out;\n strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));\n strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));\n state.hold = hold;\n state.bits = bits;\n return;\n};\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar utils = require('../utils/common');\n\nvar MAXBITS = 15;\nvar ENOUGH_LENS = 852;\nvar ENOUGH_DISTS = 592;\n//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);\n\nvar CODES = 0;\nvar LENS = 1;\nvar DISTS = 2;\n\nvar lbase = [ /* Length codes 257..285 base */\n 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,\n 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0\n];\n\nvar lext = [ /* Length codes 257..285 extra */\n 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,\n 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78\n];\n\nvar dbase = [ /* Distance codes 0..29 base */\n 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,\n 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,\n 8193, 12289, 16385, 24577, 0, 0\n];\n\nvar dext = [ /* Distance codes 0..29 extra */\n 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,\n 23, 23, 24, 24, 25, 25, 26, 26, 27, 27,\n 28, 28, 29, 29, 64, 64\n];\n\nmodule.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)\n{\n var bits = opts.bits;\n //here = opts.here; /* table entry for duplication */\n\n var len = 0; /* a code's length in bits */\n var sym = 0; /* index of code symbols */\n var min = 0, max = 0; /* minimum and maximum code lengths */\n var root = 0; /* number of index bits for root table */\n var curr = 0; /* number of index bits for current table */\n var drop = 0; /* code bits to drop for sub-table */\n var left = 0; /* number of prefix codes available */\n var used = 0; /* code entries in table used */\n var huff = 0; /* Huffman code */\n var incr; /* for incrementing code, index */\n var fill; /* index for replicating entries */\n var low; /* low bits for current root entry */\n var mask; /* mask for low root bits */\n var next; /* next available space in table */\n var base = null; /* base value table to use */\n var base_index = 0;\n// var shoextra; /* extra bits table to use */\n var end; /* use base and extra for symbol > end */\n var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1]; /* number of codes of each length */\n var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1]; /* offsets in table for each length */\n var extra = null;\n var extra_index = 0;\n\n var here_bits, here_op, here_val;\n\n /*\n Process a set of code lengths to create a canonical Huffman code. The\n code lengths are lens[0..codes-1]. Each length corresponds to the\n symbols 0..codes-1. The Huffman code is generated by first sorting the\n symbols by length from short to long, and retaining the symbol order\n for codes with equal lengths. Then the code starts with all zero bits\n for the first code of the shortest length, and the codes are integer\n increments for the same length, and zeros are appended as the length\n increases. For the deflate format, these bits are stored backwards\n from their more natural integer increment ordering, and so when the\n decoding tables are built in the large loop below, the integer codes\n are incremented backwards.\n\n This routine assumes, but does not check, that all of the entries in\n lens[] are in the range 0..MAXBITS. The caller must assure this.\n 1..MAXBITS is interpreted as that code length. zero means that that\n symbol does not occur in this code.\n\n The codes are sorted by computing a count of codes for each length,\n creating from that a table of starting indices for each length in the\n sorted table, and then entering the symbols in order in the sorted\n table. The sorted table is work[], with that space being provided by\n the caller.\n\n The length counts are used for other purposes as well, i.e. finding\n the minimum and maximum length codes, determining if there are any\n codes at all, checking for a valid set of lengths, and looking ahead\n at length counts to determine sub-table sizes when building the\n decoding tables.\n */\n\n /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */\n for (len = 0; len <= MAXBITS; len++) {\n count[len] = 0;\n }\n for (sym = 0; sym < codes; sym++) {\n count[lens[lens_index + sym]]++;\n }\n\n /* bound code lengths, force root to be within code lengths */\n root = bits;\n for (max = MAXBITS; max >= 1; max--) {\n if (count[max] !== 0) { break; }\n }\n if (root > max) {\n root = max;\n }\n if (max === 0) { /* no symbols to code at all */\n //table.op[opts.table_index] = 64; //here.op = (var char)64; /* invalid code marker */\n //table.bits[opts.table_index] = 1; //here.bits = (var char)1;\n //table.val[opts.table_index++] = 0; //here.val = (var short)0;\n table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n\n //table.op[opts.table_index] = 64;\n //table.bits[opts.table_index] = 1;\n //table.val[opts.table_index++] = 0;\n table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n opts.bits = 1;\n return 0; /* no symbols, but wait for decoding to report error */\n }\n for (min = 1; min < max; min++) {\n if (count[min] !== 0) { break; }\n }\n if (root < min) {\n root = min;\n }\n\n /* check for an over-subscribed or incomplete set of lengths */\n left = 1;\n for (len = 1; len <= MAXBITS; len++) {\n left <<= 1;\n left -= count[len];\n if (left < 0) {\n return -1;\n } /* over-subscribed */\n }\n if (left > 0 && (type === CODES || max !== 1)) {\n return -1; /* incomplete set */\n }\n\n /* generate offsets into symbol table for each length for sorting */\n offs[1] = 0;\n for (len = 1; len < MAXBITS; len++) {\n offs[len + 1] = offs[len] + count[len];\n }\n\n /* sort symbols by length, by symbol order within each length */\n for (sym = 0; sym < codes; sym++) {\n if (lens[lens_index + sym] !== 0) {\n work[offs[lens[lens_index + sym]]++] = sym;\n }\n }\n\n /*\n Create and fill in decoding tables. In this loop, the table being\n filled is at next and has curr index bits. The code being used is huff\n with length len. That code is converted to an index by dropping drop\n bits off of the bottom. For codes where len is less than drop + curr,\n those top drop + curr - len bits are incremented through all values to\n fill the table with replicated entries.\n\n root is the number of index bits for the root table. When len exceeds\n root, sub-tables are created pointed to by the root entry with an index\n of the low root bits of huff. This is saved in low to check for when a\n new sub-table should be started. drop is zero when the root table is\n being filled, and drop is root when sub-tables are being filled.\n\n When a new sub-table is needed, it is necessary to look ahead in the\n code lengths to determine what size sub-table is needed. The length\n counts are used for this, and so count[] is decremented as codes are\n entered in the tables.\n\n used keeps track of how many table entries have been allocated from the\n provided *table space. It is checked for LENS and DIST tables against\n the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in\n the initial root table size constants. See the comments in inftrees.h\n for more information.\n\n sym increments through all symbols, and the loop terminates when\n all codes of length max, i.e. all codes, have been processed. This\n routine permits incomplete codes, so another loop after this one fills\n in the rest of the decoding tables with invalid code markers.\n */\n\n /* set up for code type */\n // poor man optimization - use if-else instead of switch,\n // to avoid deopts in old v8\n if (type === CODES) {\n base = extra = work; /* dummy value--not used */\n end = 19;\n\n } else if (type === LENS) {\n base = lbase;\n base_index -= 257;\n extra = lext;\n extra_index -= 257;\n end = 256;\n\n } else { /* DISTS */\n base = dbase;\n extra = dext;\n end = -1;\n }\n\n /* initialize opts for loop */\n huff = 0; /* starting code */\n sym = 0; /* starting code symbol */\n len = min; /* starting code length */\n next = table_index; /* current table to fill in */\n curr = root; /* current table index bits */\n drop = 0; /* current bits to drop from code for index */\n low = -1; /* trigger new sub-table when len > root */\n used = 1 << root; /* use root table entries */\n mask = used - 1; /* mask for comparing low */\n\n /* check available table space */\n if ((type === LENS && used > ENOUGH_LENS) ||\n (type === DISTS && used > ENOUGH_DISTS)) {\n return 1;\n }\n\n /* process all codes and make table entries */\n for (;;) {\n /* create table entry */\n here_bits = len - drop;\n if (work[sym] < end) {\n here_op = 0;\n here_val = work[sym];\n }\n else if (work[sym] > end) {\n here_op = extra[extra_index + work[sym]];\n here_val = base[base_index + work[sym]];\n }\n else {\n here_op = 32 + 64; /* end of block */\n here_val = 0;\n }\n\n /* replicate for those indices with low len bits equal to huff */\n incr = 1 << (len - drop);\n fill = 1 << curr;\n min = fill; /* save offset to next table */\n do {\n fill -= incr;\n table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;\n } while (fill !== 0);\n\n /* backwards increment the len-bit code huff */\n incr = 1 << (len - 1);\n while (huff & incr) {\n incr >>= 1;\n }\n if (incr !== 0) {\n huff &= incr - 1;\n huff += incr;\n } else {\n huff = 0;\n }\n\n /* go to next symbol, update count, len */\n sym++;\n if (--count[len] === 0) {\n if (len === max) { break; }\n len = lens[lens_index + work[sym]];\n }\n\n /* create new sub-table if needed */\n if (len > root && (huff & mask) !== low) {\n /* if first time, transition to sub-tables */\n if (drop === 0) {\n drop = root;\n }\n\n /* increment past last table */\n next += min; /* here min is 1 << curr */\n\n /* determine length of next table */\n curr = len - drop;\n left = 1 << curr;\n while (curr + drop < max) {\n left -= count[curr + drop];\n if (left <= 0) { break; }\n curr++;\n left <<= 1;\n }\n\n /* check for enough space */\n used += 1 << curr;\n if ((type === LENS && used > ENOUGH_LENS) ||\n (type === DISTS && used > ENOUGH_DISTS)) {\n return 1;\n }\n\n /* point entry in root table to sub-table */\n low = huff & mask;\n /*table.op[low] = curr;\n table.bits[low] = root;\n table.val[low] = next - opts.table_index;*/\n table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;\n }\n }\n\n /* fill in remaining table entry if code is incomplete (guaranteed to have\n at most one remaining entry, since if the code is incomplete, the\n maximum code length that was allowed to get this far is one bit) */\n if (huff !== 0) {\n //table.op[next + huff] = 64; /* invalid code marker */\n //table.bits[next + huff] = len - drop;\n //table.val[next + huff] = 0;\n table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;\n }\n\n /* set return parameters */\n //opts.table_index += used;\n opts.bits = root;\n return 0;\n};\n","'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n// claim that you wrote the original software. If you use this software\n// in a product, an acknowledgment in the product documentation would be\n// appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n// misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction GZheader() {\n /* true if compressed data believed to be text */\n this.text = 0;\n /* modification time */\n this.time = 0;\n /* extra flags (not used when writing a gzip file) */\n this.xflags = 0;\n /* operating system */\n this.os = 0;\n /* pointer to extra field or Z_NULL if none */\n this.extra = null;\n /* extra field length (valid if extra != Z_NULL) */\n this.extra_len = 0; // Actually, we don't need it in JS,\n // but leave for few code modifications\n\n //\n // Setup limits is not necessary because in js we should not preallocate memory\n // for inflate use constant limit in 65536 bytes\n //\n\n /* space at extra (only when reading header) */\n // this.extra_max = 0;\n /* pointer to zero-terminated file name or Z_NULL */\n this.name = '';\n /* space at name (only when reading header) */\n // this.name_max = 0;\n /* pointer to zero-terminated comment or Z_NULL */\n this.comment = '';\n /* space at comment (only when reading header) */\n // this.comm_max = 0;\n /* true if there was or will be a header crc */\n this.hcrc = 0;\n /* true when done reading gzip header (not used when writing a gzip file) */\n this.done = false;\n}\n\nmodule.exports = GZheader;\n","'use strict';\n\nvar utils = require('./utils');\n\nvar table = [\n 0x00000000, 0x77073096, 0xEE0E612C, 0x990951BA,\n 0x076DC419, 0x706AF48F, 0xE963A535, 0x9E6495A3,\n 0x0EDB8832, 0x79DCB8A4, 0xE0D5E91E, 0x97D2D988,\n 0x09B64C2B, 0x7EB17CBD, 0xE7B82D07, 0x90BF1D91,\n 0x1DB71064, 0x6AB020F2, 0xF3B97148, 0x84BE41DE,\n 0x1ADAD47D, 0x6DDDE4EB, 0xF4D4B551, 0x83D385C7,\n 0x136C9856, 0x646BA8C0, 0xFD62F97A, 0x8A65C9EC,\n 0x14015C4F, 0x63066CD9, 0xFA0F3D63, 0x8D080DF5,\n 0x3B6E20C8, 0x4C69105E, 0xD56041E4, 0xA2677172,\n 0x3C03E4D1, 0x4B04D447, 0xD20D85FD, 0xA50AB56B,\n 0x35B5A8FA, 0x42B2986C, 0xDBBBC9D6, 0xACBCF940,\n 0x32D86CE3, 0x45DF5C75, 0xDCD60DCF, 0xABD13D59,\n 0x26D930AC, 0x51DE003A, 0xC8D75180, 0xBFD06116,\n 0x21B4F4B5, 0x56B3C423, 0xCFBA9599, 0xB8BDA50F,\n 0x2802B89E, 0x5F058808, 0xC60CD9B2, 0xB10BE924,\n 0x2F6F7C87, 0x58684C11, 0xC1611DAB, 0xB6662D3D,\n 0x76DC4190, 0x01DB7106, 0x98D220BC, 0xEFD5102A,\n 0x71B18589, 0x06B6B51F, 0x9FBFE4A5, 0xE8B8D433,\n 0x7807C9A2, 0x0F00F934, 0x9609A88E, 0xE10E9818,\n 0x7F6A0DBB, 0x086D3D2D, 0x91646C97, 0xE6635C01,\n 0x6B6B51F4, 0x1C6C6162, 0x856530D8, 0xF262004E,\n 0x6C0695ED, 0x1B01A57B, 0x8208F4C1, 0xF50FC457,\n 0x65B0D9C6, 0x12B7E950, 0x8BBEB8EA, 0xFCB9887C,\n 0x62DD1DDF, 0x15DA2D49, 0x8CD37CF3, 0xFBD44C65,\n 0x4DB26158, 0x3AB551CE, 0xA3BC0074, 0xD4BB30E2,\n 0x4ADFA541, 0x3DD895D7, 0xA4D1C46D, 0xD3D6F4FB,\n 0x4369E96A, 0x346ED9FC, 0xAD678846, 0xDA60B8D0,\n 0x44042D73, 0x33031DE5, 0xAA0A4C5F, 0xDD0D7CC9,\n 0x5005713C, 0x270241AA, 0xBE0B1010, 0xC90C2086,\n 0x5768B525, 0x206F85B3, 0xB966D409, 0xCE61E49F,\n 0x5EDEF90E, 0x29D9C998, 0xB0D09822, 0xC7D7A8B4,\n 0x59B33D17, 0x2EB40D81, 0xB7BD5C3B, 0xC0BA6CAD,\n 0xEDB88320, 0x9ABFB3B6, 0x03B6E20C, 0x74B1D29A,\n 0xEAD54739, 0x9DD277AF, 0x04DB2615, 0x73DC1683,\n 0xE3630B12, 0x94643B84, 0x0D6D6A3E, 0x7A6A5AA8,\n 0xE40ECF0B, 0x9309FF9D, 0x0A00AE27, 0x7D079EB1,\n 0xF00F9344, 0x8708A3D2, 0x1E01F268, 0x6906C2FE,\n 0xF762575D, 0x806567CB, 0x196C3671, 0x6E6B06E7,\n 0xFED41B76, 0x89D32BE0, 0x10DA7A5A, 0x67DD4ACC,\n 0xF9B9DF6F, 0x8EBEEFF9, 0x17B7BE43, 0x60B08ED5,\n 0xD6D6A3E8, 0xA1D1937E, 0x38D8C2C4, 0x4FDFF252,\n 0xD1BB67F1, 0xA6BC5767, 0x3FB506DD, 0x48B2364B,\n 0xD80D2BDA, 0xAF0A1B4C, 0x36034AF6, 0x41047A60,\n 0xDF60EFC3, 0xA867DF55, 0x316E8EEF, 0x4669BE79,\n 0xCB61B38C, 0xBC66831A, 0x256FD2A0, 0x5268E236,\n 0xCC0C7795, 0xBB0B4703, 0x220216B9, 0x5505262F,\n 0xC5BA3BBE, 0xB2BD0B28, 0x2BB45A92, 0x5CB36A04,\n 0xC2D7FFA7, 0xB5D0CF31, 0x2CD99E8B, 0x5BDEAE1D,\n 0x9B64C2B0, 0xEC63F226, 0x756AA39C, 0x026D930A,\n 0x9C0906A9, 0xEB0E363F, 0x72076785, 0x05005713,\n 0x95BF4A82, 0xE2B87A14, 0x7BB12BAE, 0x0CB61B38,\n 0x92D28E9B, 0xE5D5BE0D, 0x7CDCEFB7, 0x0BDBDF21,\n 0x86D3D2D4, 0xF1D4E242, 0x68DDB3F8, 0x1FDA836E,\n 0x81BE16CD, 0xF6B9265B, 0x6FB077E1, 0x18B74777,\n 0x88085AE6, 0xFF0F6A70, 0x66063BCA, 0x11010B5C,\n 0x8F659EFF, 0xF862AE69, 0x616BFFD3, 0x166CCF45,\n 0xA00AE278, 0xD70DD2EE, 0x4E048354, 0x3903B3C2,\n 0xA7672661, 0xD06016F7, 0x4969474D, 0x3E6E77DB,\n 0xAED16A4A, 0xD9D65ADC, 0x40DF0B66, 0x37D83BF0,\n 0xA9BCAE53, 0xDEBB9EC5, 0x47B2CF7F, 0x30B5FFE9,\n 0xBDBDF21C, 0xCABAC28A, 0x53B39330, 0x24B4A3A6,\n 0xBAD03605, 0xCDD70693, 0x54DE5729, 0x23D967BF,\n 0xB3667A2E, 0xC4614AB8, 0x5D681B02, 0x2A6F2B94,\n 0xB40BBE37, 0xC30C8EA1, 0x5A05DF1B, 0x2D02EF8D\n];\n\n/**\n *\n * Javascript crc32\n * http://www.webtoolkit.info/\n *\n */\nmodule.exports = function crc32(input, crc) {\n if (typeof input === \"undefined\" || !input.length) {\n return 0;\n }\n\n var isArray = utils.getTypeOf(input) !== \"string\";\n\n if (typeof(crc) == \"undefined\") {\n crc = 0;\n }\n var x = 0;\n var y = 0;\n var b = 0;\n\n crc = crc ^ (-1);\n for (var i = 0, iTop = input.length; i < iTop; i++) {\n b = isArray ? input[i] : input.charCodeAt(i);\n y = (crc ^ b) & 0xFF;\n x = table[y];\n crc = (crc >>> 8) ^ x;\n }\n\n return crc ^ (-1);\n};\n// vim: set shiftwidth=4 softtabstop=4:\n","'use strict';\n\nvar utils = require('./utils');\n\n/**\n * An object to write any content to a string.\n * @constructor\n */\nvar StringWriter = function() {\n this.data = [];\n};\nStringWriter.prototype = {\n /**\n * Append any content to the current string.\n * @param {Object} input the content to add.\n */\n append: function(input) {\n input = utils.transformTo(\"string\", input);\n this.data.push(input);\n },\n /**\n * Finalize the construction an return the result.\n * @return {string} the generated string.\n */\n finalize: function() {\n return this.data.join(\"\");\n }\n};\n\nmodule.exports = StringWriter;\n","'use strict';\n\nvar utils = require('./utils');\n\n/**\n * An object to write any content to an Uint8Array.\n * @constructor\n * @param {number} length The length of the array.\n */\nvar Uint8ArrayWriter = function(length) {\n this.data = new Uint8Array(length);\n this.index = 0;\n};\nUint8ArrayWriter.prototype = {\n /**\n * Append any content to the current array.\n * @param {Object} input the content to add.\n */\n append: function(input) {\n if (input.length !== 0) {\n // with an empty Uint8Array, Opera fails with a \"Offset larger than array size\"\n input = utils.transformTo(\"uint8array\", input);\n this.data.set(input, this.index);\n this.index += input.length;\n }\n },\n /**\n * Finalize the construction an return the result.\n * @return {Uint8Array} the generated array.\n */\n finalize: function() {\n return this.data;\n }\n};\n\nmodule.exports = Uint8ArrayWriter;\n","'use strict';\nvar base64 = require('./base64');\nvar utf8 = require('./utf8');\nvar utils = require('./utils');\nvar ZipEntries = require('./zipEntries');\nmodule.exports = function(data, options) {\n var files, zipEntries, i, input;\n options = utils.extend(options || {}, {\n base64: false,\n checkCRC32: false,\n optimizedBinaryString : false,\n createFolders: false,\n decodeFileName: utf8.utf8decode\n });\n if (options.base64) {\n data = base64.decode(data);\n }\n\n zipEntries = new ZipEntries(data, options);\n files = zipEntries.files;\n for (i = 0; i < files.length; i++) {\n input = files[i];\n this.file(input.fileNameStr, input.decompressed, {\n binary: true,\n optimizedBinaryString: true,\n date: input.date,\n dir: input.dir,\n comment : input.fileCommentStr.length ? input.fileCommentStr : null,\n unixPermissions : input.unixPermissions,\n dosPermissions : input.dosPermissions,\n createFolders: options.createFolders\n });\n }\n if (zipEntries.zipComment.length) {\n this.comment = zipEntries.zipComment;\n }\n\n return this;\n};\n","'use strict';\nvar StringReader = require('./stringReader');\nvar NodeBufferReader = require('./nodeBufferReader');\nvar Uint8ArrayReader = require('./uint8ArrayReader');\nvar ArrayReader = require('./arrayReader');\nvar utils = require('./utils');\nvar sig = require('./signature');\nvar ZipEntry = require('./zipEntry');\nvar support = require('./support');\nvar jszipProto = require('./object');\n// class ZipEntries {{{\n/**\n * All the entries in the zip file.\n * @constructor\n * @param {String|ArrayBuffer|Uint8Array} data the binary stream to load.\n * @param {Object} loadOptions Options for loading the stream.\n */\nfunction ZipEntries(data, loadOptions) {\n this.files = [];\n this.loadOptions = loadOptions;\n if (data) {\n this.load(data);\n }\n}\nZipEntries.prototype = {\n /**\n * Check that the reader is on the speficied signature.\n * @param {string} expectedSignature the expected signature.\n * @throws {Error} if it is an other signature.\n */\n checkSignature: function(expectedSignature) {\n var signature = this.reader.readString(4);\n if (signature !== expectedSignature) {\n throw new Error(\"Corrupted zip or bug : unexpected signature \" + \"(\" + utils.pretty(signature) + \", expected \" + utils.pretty(expectedSignature) + \")\");\n }\n },\n /**\n * Check if the given signature is at the given index.\n * @param {number} askedIndex the index to check.\n * @param {string} expectedSignature the signature to expect.\n * @return {boolean} true if the signature is here, false otherwise.\n */\n isSignature: function(askedIndex, expectedSignature) {\n var currentIndex = this.reader.index;\n this.reader.setIndex(askedIndex);\n var signature = this.reader.readString(4);\n var result = signature === expectedSignature;\n this.reader.setIndex(currentIndex);\n return result;\n },\n /**\n * Read the end of the central directory.\n */\n readBlockEndOfCentral: function() {\n this.diskNumber = this.reader.readInt(2);\n this.diskWithCentralDirStart = this.reader.readInt(2);\n this.centralDirRecordsOnThisDisk = this.reader.readInt(2);\n this.centralDirRecords = this.reader.readInt(2);\n this.centralDirSize = this.reader.readInt(4);\n this.centralDirOffset = this.reader.readInt(4);\n\n this.zipCommentLength = this.reader.readInt(2);\n // warning : the encoding depends of the system locale\n // On a linux machine with LANG=en_US.utf8, this field is utf8 encoded.\n // On a windows machine, this field is encoded with the localized windows code page.\n var zipComment = this.reader.readData(this.zipCommentLength);\n var decodeParamType = support.uint8array ? \"uint8array\" : \"array\";\n // To get consistent behavior with the generation part, we will assume that\n // this is utf8 encoded unless specified otherwise.\n var decodeContent = utils.transformTo(decodeParamType, zipComment);\n this.zipComment = this.loadOptions.decodeFileName(decodeContent);\n },\n /**\n * Read the end of the Zip 64 central directory.\n * Not merged with the method readEndOfCentral :\n * The end of central can coexist with its Zip64 brother,\n * I don't want to read the wrong number of bytes !\n */\n readBlockZip64EndOfCentral: function() {\n this.zip64EndOfCentralSize = this.reader.readInt(8);\n this.versionMadeBy = this.reader.readString(2);\n this.versionNeeded = this.reader.readInt(2);\n this.diskNumber = this.reader.readInt(4);\n this.diskWithCentralDirStart = this.reader.readInt(4);\n this.centralDirRecordsOnThisDisk = this.reader.readInt(8);\n this.centralDirRecords = this.reader.readInt(8);\n this.centralDirSize = this.reader.readInt(8);\n this.centralDirOffset = this.reader.readInt(8);\n\n this.zip64ExtensibleData = {};\n var extraDataSize = this.zip64EndOfCentralSize - 44,\n index = 0,\n extraFieldId,\n extraFieldLength,\n extraFieldValue;\n while (index < extraDataSize) {\n extraFieldId = this.reader.readInt(2);\n extraFieldLength = this.reader.readInt(4);\n extraFieldValue = this.reader.readString(extraFieldLength);\n this.zip64ExtensibleData[extraFieldId] = {\n id: extraFieldId,\n length: extraFieldLength,\n value: extraFieldValue\n };\n }\n },\n /**\n * Read the end of the Zip 64 central directory locator.\n */\n readBlockZip64EndOfCentralLocator: function() {\n this.diskWithZip64CentralDirStart = this.reader.readInt(4);\n this.relativeOffsetEndOfZip64CentralDir = this.reader.readInt(8);\n this.disksCount = this.reader.readInt(4);\n if (this.disksCount > 1) {\n throw new Error(\"Multi-volumes zip are not supported\");\n }\n },\n /**\n * Read the local files, based on the offset read in the central part.\n */\n readLocalFiles: function() {\n var i, file;\n for (i = 0; i < this.files.length; i++) {\n file = this.files[i];\n this.reader.setIndex(file.localHeaderOffset);\n this.checkSignature(sig.LOCAL_FILE_HEADER);\n file.readLocalPart(this.reader);\n file.handleUTF8();\n file.processAttributes();\n }\n },\n /**\n * Read the central directory.\n */\n readCentralDir: function() {\n var file;\n\n this.reader.setIndex(this.centralDirOffset);\n while (this.reader.readString(4) === sig.CENTRAL_FILE_HEADER) {\n file = new ZipEntry({\n zip64: this.zip64\n }, this.loadOptions);\n file.readCentralPart(this.reader);\n this.files.push(file);\n }\n\n if (this.centralDirRecords !== this.files.length) {\n if (this.centralDirRecords !== 0 && this.files.length === 0) {\n // We expected some records but couldn't find ANY.\n // This is really suspicious, as if something went wrong.\n throw new Error(\"Corrupted zip or bug: expected \" + this.centralDirRecords + \" records in central dir, got \" + this.files.length);\n } else {\n // We found some records but not all.\n // Something is wrong but we got something for the user: no error here.\n // console.warn(\"expected\", this.centralDirRecords, \"records in central dir, got\", this.files.length);\n }\n }\n },\n /**\n * Read the end of central directory.\n */\n readEndOfCentral: function() {\n var offset = this.reader.lastIndexOfSignature(sig.CENTRAL_DIRECTORY_END);\n if (offset < 0) {\n // Check if the content is a truncated zip or complete garbage.\n // A \"LOCAL_FILE_HEADER\" is not required at the beginning (auto\n // extractible zip for example) but it can give a good hint.\n // If an ajax request was used without responseType, we will also\n // get unreadable data.\n var isGarbage = !this.isSignature(0, sig.LOCAL_FILE_HEADER);\n\n if (isGarbage) {\n throw new Error(\"Can't find end of central directory : is this a zip file ? \" +\n \"If it is, see http://stuk.github.io/jszip/documentation/howto/read_zip.html\");\n } else {\n throw new Error(\"Corrupted zip : can't find end of central directory\");\n }\n }\n this.reader.setIndex(offset);\n var endOfCentralDirOffset = offset;\n this.checkSignature(sig.CENTRAL_DIRECTORY_END);\n this.readBlockEndOfCentral();\n\n\n /* extract from the zip spec :\n 4) If one of the fields in the end of central directory\n record is too small to hold required data, the field\n should be set to -1 (0xFFFF or 0xFFFFFFFF) and the\n ZIP64 format record should be created.\n 5) The end of central directory record and the\n Zip64 end of central directory locator record must\n reside on the same disk when splitting or spanning\n an archive.\n */\n if (this.diskNumber === utils.MAX_VALUE_16BITS || this.diskWithCentralDirStart === utils.MAX_VALUE_16BITS || this.centralDirRecordsOnThisDisk === utils.MAX_VALUE_16BITS || this.centralDirRecords === utils.MAX_VALUE_16BITS || this.centralDirSize === utils.MAX_VALUE_32BITS || this.centralDirOffset === utils.MAX_VALUE_32BITS) {\n this.zip64 = true;\n\n /*\n Warning : the zip64 extension is supported, but ONLY if the 64bits integer read from\n the zip file can fit into a 32bits integer. This cannot be solved : Javascript represents\n all numbers as 64-bit double precision IEEE 754 floating point numbers.\n So, we have 53bits for integers and bitwise operations treat everything as 32bits.\n see https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Bitwise_Operators\n and http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf section 8.5\n */\n\n // should look for a zip64 EOCD locator\n offset = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);\n if (offset < 0) {\n throw new Error(\"Corrupted zip : can't find the ZIP64 end of central directory locator\");\n }\n this.reader.setIndex(offset);\n this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);\n this.readBlockZip64EndOfCentralLocator();\n\n // now the zip64 EOCD record\n if (!this.isSignature(this.relativeOffsetEndOfZip64CentralDir, sig.ZIP64_CENTRAL_DIRECTORY_END)) {\n // console.warn(\"ZIP64 end of central directory not where expected.\");\n this.relativeOffsetEndOfZip64CentralDir = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);\n if (this.relativeOffsetEndOfZip64CentralDir < 0) {\n throw new Error(\"Corrupted zip : can't find the ZIP64 end of central directory\");\n }\n }\n this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir);\n this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);\n this.readBlockZip64EndOfCentral();\n }\n\n var expectedEndOfCentralDirOffset = this.centralDirOffset + this.centralDirSize;\n if (this.zip64) {\n expectedEndOfCentralDirOffset += 20; // end of central dir 64 locator\n expectedEndOfCentralDirOffset += 12 /* should not include the leading 12 bytes */ + this.zip64EndOfCentralSize;\n }\n\n var extraBytes = endOfCentralDirOffset - expectedEndOfCentralDirOffset;\n\n if (extraBytes > 0) {\n // console.warn(extraBytes, \"extra bytes at beginning or within zipfile\");\n if (this.isSignature(endOfCentralDirOffset, sig.CENTRAL_FILE_HEADER)) {\n // The offsets seem wrong, but we have something at the specified offset.\n // So… we keep it.\n } else {\n // the offset is wrong, update the \"zero\" of the reader\n // this happens if data has been prepended (crx files for example)\n this.reader.zero = extraBytes;\n }\n } else if (extraBytes < 0) {\n throw new Error(\"Corrupted zip: missing \" + Math.abs(extraBytes) + \" bytes.\");\n }\n },\n prepareReader: function(data) {\n var type = utils.getTypeOf(data);\n utils.checkSupport(type);\n if (type === \"string\" && !support.uint8array) {\n this.reader = new StringReader(data, this.loadOptions.optimizedBinaryString);\n }\n else if (type === \"nodebuffer\") {\n this.reader = new NodeBufferReader(data);\n }\n else if (support.uint8array) {\n this.reader = new Uint8ArrayReader(utils.transformTo(\"uint8array\", data));\n } else if (support.array) {\n this.reader = new ArrayReader(utils.transformTo(\"array\", data));\n } else {\n throw new Error(\"Unexpected error: unsupported type '\" + type + \"'\");\n }\n },\n /**\n * Read a zip file and create ZipEntries.\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data the binary string representing a zip file.\n */\n load: function(data) {\n this.prepareReader(data);\n this.readEndOfCentral();\n this.readCentralDir();\n this.readLocalFiles();\n }\n};\n// }}} end of ZipEntries\nmodule.exports = ZipEntries;\n","'use strict';\nvar Uint8ArrayReader = require('./uint8ArrayReader');\n\nfunction NodeBufferReader(data) {\n this.data = data;\n this.length = this.data.length;\n this.index = 0;\n this.zero = 0;\n}\nNodeBufferReader.prototype = new Uint8ArrayReader();\n\n/**\n * @see DataReader.readData\n */\nNodeBufferReader.prototype.readData = function(size) {\n this.checkOffset(size);\n var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);\n this.index += size;\n return result;\n};\nmodule.exports = NodeBufferReader;\n","'use strict';\nvar StringReader = require('./stringReader');\nvar utils = require('./utils');\nvar CompressedObject = require('./compressedObject');\nvar jszipProto = require('./object');\nvar support = require('./support');\n\nvar MADE_BY_DOS = 0x00;\nvar MADE_BY_UNIX = 0x03;\n\n// class ZipEntry {{{\n/**\n * An entry in the zip file.\n * @constructor\n * @param {Object} options Options of the current file.\n * @param {Object} loadOptions Options for loading the stream.\n */\nfunction ZipEntry(options, loadOptions) {\n this.options = options;\n this.loadOptions = loadOptions;\n}\nZipEntry.prototype = {\n /**\n * say if the file is encrypted.\n * @return {boolean} true if the file is encrypted, false otherwise.\n */\n isEncrypted: function() {\n // bit 1 is set\n return (this.bitFlag & 0x0001) === 0x0001;\n },\n /**\n * say if the file has utf-8 filename/comment.\n * @return {boolean} true if the filename/comment is in utf-8, false otherwise.\n */\n useUTF8: function() {\n // bit 11 is set\n return (this.bitFlag & 0x0800) === 0x0800;\n },\n /**\n * Prepare the function used to generate the compressed content from this ZipFile.\n * @param {DataReader} reader the reader to use.\n * @param {number} from the offset from where we should read the data.\n * @param {number} length the length of the data to read.\n * @return {Function} the callback to get the compressed content (the type depends of the DataReader class).\n */\n prepareCompressedContent: function(reader, from, length) {\n return function() {\n var previousIndex = reader.index;\n reader.setIndex(from);\n var compressedFileData = reader.readData(length);\n reader.setIndex(previousIndex);\n\n return compressedFileData;\n };\n },\n /**\n * Prepare the function used to generate the uncompressed content from this ZipFile.\n * @param {DataReader} reader the reader to use.\n * @param {number} from the offset from where we should read the data.\n * @param {number} length the length of the data to read.\n * @param {JSZip.compression} compression the compression used on this file.\n * @param {number} uncompressedSize the uncompressed size to expect.\n * @return {Function} the callback to get the uncompressed content (the type depends of the DataReader class).\n */\n prepareContent: function(reader, from, length, compression, uncompressedSize) {\n return function() {\n\n var compressedFileData = utils.transformTo(compression.uncompressInputType, this.getCompressedContent());\n var uncompressedFileData = compression.uncompress(compressedFileData);\n\n if (uncompressedFileData.length !== uncompressedSize) {\n throw new Error(\"Bug : uncompressed data size mismatch\");\n }\n\n return uncompressedFileData;\n };\n },\n /**\n * Read the local part of a zip file and add the info in this object.\n * @param {DataReader} reader the reader to use.\n */\n readLocalPart: function(reader) {\n var compression, localExtraFieldsLength;\n\n // we already know everything from the central dir !\n // If the central dir data are false, we are doomed.\n // On the bright side, the local part is scary : zip64, data descriptors, both, etc.\n // The less data we get here, the more reliable this should be.\n // Let's skip the whole header and dash to the data !\n reader.skip(22);\n // in some zip created on windows, the filename stored in the central dir contains \\ instead of /.\n // Strangely, the filename here is OK.\n // I would love to treat these zip files as corrupted (see http://www.info-zip.org/FAQ.html#backslashes\n // or APPNOTE#4.4.17.1, \"All slashes MUST be forward slashes '/'\") but there are a lot of bad zip generators...\n // Search \"unzip mismatching \"local\" filename continuing with \"central\" filename version\" on\n // the internet.\n //\n // I think I see the logic here : the central directory is used to display\n // content and the local directory is used to extract the files. Mixing / and \\\n // may be used to display \\ to windows users and use / when extracting the files.\n // Unfortunately, this lead also to some issues : http://seclists.org/fulldisclosure/2009/Sep/394\n this.fileNameLength = reader.readInt(2);\n localExtraFieldsLength = reader.readInt(2); // can't be sure this will be the same as the central dir\n this.fileName = reader.readData(this.fileNameLength);\n reader.skip(localExtraFieldsLength);\n\n if (this.compressedSize == -1 || this.uncompressedSize == -1) {\n throw new Error(\"Bug or corrupted zip : didn't get enough informations from the central directory \" + \"(compressedSize == -1 || uncompressedSize == -1)\");\n }\n\n compression = utils.findCompression(this.compressionMethod);\n if (compression === null) { // no compression found\n throw new Error(\"Corrupted zip : compression \" + utils.pretty(this.compressionMethod) + \" unknown (inner file : \" + utils.transformTo(\"string\", this.fileName) + \")\");\n }\n this.decompressed = new CompressedObject();\n this.decompressed.compressedSize = this.compressedSize;\n this.decompressed.uncompressedSize = this.uncompressedSize;\n this.decompressed.crc32 = this.crc32;\n this.decompressed.compressionMethod = this.compressionMethod;\n this.decompressed.getCompressedContent = this.prepareCompressedContent(reader, reader.index, this.compressedSize, compression);\n this.decompressed.getContent = this.prepareContent(reader, reader.index, this.compressedSize, compression, this.uncompressedSize);\n\n // we need to compute the crc32...\n if (this.loadOptions.checkCRC32) {\n this.decompressed = utils.transformTo(\"string\", this.decompressed.getContent());\n if (jszipProto.crc32(this.decompressed) !== this.crc32) {\n throw new Error(\"Corrupted zip : CRC32 mismatch\");\n }\n }\n },\n\n /**\n * Read the central part of a zip file and add the info in this object.\n * @param {DataReader} reader the reader to use.\n */\n readCentralPart: function(reader) {\n this.versionMadeBy = reader.readInt(2);\n this.versionNeeded = reader.readInt(2);\n this.bitFlag = reader.readInt(2);\n this.compressionMethod = reader.readString(2);\n this.date = reader.readDate();\n this.crc32 = reader.readInt(4);\n this.compressedSize = reader.readInt(4);\n this.uncompressedSize = reader.readInt(4);\n this.fileNameLength = reader.readInt(2);\n this.extraFieldsLength = reader.readInt(2);\n this.fileCommentLength = reader.readInt(2);\n this.diskNumberStart = reader.readInt(2);\n this.internalFileAttributes = reader.readInt(2);\n this.externalFileAttributes = reader.readInt(4);\n this.localHeaderOffset = reader.readInt(4);\n\n if (this.isEncrypted()) {\n throw new Error(\"Encrypted zip are not supported\");\n }\n\n this.fileName = reader.readData(this.fileNameLength);\n this.readExtraFields(reader);\n this.parseZIP64ExtraField(reader);\n this.fileComment = reader.readData(this.fileCommentLength);\n },\n\n /**\n * Parse the external file attributes and get the unix/dos permissions.\n */\n processAttributes: function () {\n this.unixPermissions = null;\n this.dosPermissions = null;\n var madeBy = this.versionMadeBy >> 8;\n\n // Check if we have the DOS directory flag set.\n // We look for it in the DOS and UNIX permissions\n // but some unknown platform could set it as a compatibility flag.\n this.dir = this.externalFileAttributes & 0x0010 ? true : false;\n\n if(madeBy === MADE_BY_DOS) {\n // first 6 bits (0 to 5)\n this.dosPermissions = this.externalFileAttributes & 0x3F;\n }\n\n if(madeBy === MADE_BY_UNIX) {\n this.unixPermissions = (this.externalFileAttributes >> 16) & 0xFFFF;\n // the octal permissions are in (this.unixPermissions & 0x01FF).toString(8);\n }\n\n // fail safe : if the name ends with a / it probably means a folder\n if (!this.dir && this.fileNameStr.slice(-1) === '/') {\n this.dir = true;\n }\n },\n\n /**\n * Parse the ZIP64 extra field and merge the info in the current ZipEntry.\n * @param {DataReader} reader the reader to use.\n */\n parseZIP64ExtraField: function(reader) {\n\n if (!this.extraFields[0x0001]) {\n return;\n }\n\n // should be something, preparing the extra reader\n var extraReader = new StringReader(this.extraFields[0x0001].value);\n\n // I really hope that these 64bits integer can fit in 32 bits integer, because js\n // won't let us have more.\n if (this.uncompressedSize === utils.MAX_VALUE_32BITS) {\n this.uncompressedSize = extraReader.readInt(8);\n }\n if (this.compressedSize === utils.MAX_VALUE_32BITS) {\n this.compressedSize = extraReader.readInt(8);\n }\n if (this.localHeaderOffset === utils.MAX_VALUE_32BITS) {\n this.localHeaderOffset = extraReader.readInt(8);\n }\n if (this.diskNumberStart === utils.MAX_VALUE_32BITS) {\n this.diskNumberStart = extraReader.readInt(4);\n }\n },\n /**\n * Read the central part of a zip file and add the info in this object.\n * @param {DataReader} reader the reader to use.\n */\n readExtraFields: function(reader) {\n var start = reader.index,\n extraFieldId,\n extraFieldLength,\n extraFieldValue;\n\n this.extraFields = this.extraFields || {};\n\n while (reader.index < start + this.extraFieldsLength) {\n extraFieldId = reader.readInt(2);\n extraFieldLength = reader.readInt(2);\n extraFieldValue = reader.readString(extraFieldLength);\n\n this.extraFields[extraFieldId] = {\n id: extraFieldId,\n length: extraFieldLength,\n value: extraFieldValue\n };\n }\n },\n /**\n * Apply an UTF8 transformation if needed.\n */\n handleUTF8: function() {\n var decodeParamType = support.uint8array ? \"uint8array\" : \"array\";\n if (this.useUTF8()) {\n this.fileNameStr = jszipProto.utf8decode(this.fileName);\n this.fileCommentStr = jszipProto.utf8decode(this.fileComment);\n } else {\n var upath = this.findExtraFieldUnicodePath();\n if (upath !== null) {\n this.fileNameStr = upath;\n } else {\n var fileNameByteArray = utils.transformTo(decodeParamType, this.fileName);\n this.fileNameStr = this.loadOptions.decodeFileName(fileNameByteArray);\n }\n\n var ucomment = this.findExtraFieldUnicodeComment();\n if (ucomment !== null) {\n this.fileCommentStr = ucomment;\n } else {\n var commentByteArray = utils.transformTo(decodeParamType, this.fileComment);\n this.fileCommentStr = this.loadOptions.decodeFileName(commentByteArray);\n }\n }\n },\n\n /**\n * Find the unicode path declared in the extra field, if any.\n * @return {String} the unicode path, null otherwise.\n */\n findExtraFieldUnicodePath: function() {\n var upathField = this.extraFields[0x7075];\n if (upathField) {\n var extraReader = new StringReader(upathField.value);\n\n // wrong version\n if (extraReader.readInt(1) !== 1) {\n return null;\n }\n\n // the crc of the filename changed, this field is out of date.\n if (jszipProto.crc32(this.fileName) !== extraReader.readInt(4)) {\n return null;\n }\n\n return jszipProto.utf8decode(extraReader.readString(upathField.length - 5));\n }\n return null;\n },\n\n /**\n * Find the unicode comment declared in the extra field, if any.\n * @return {String} the unicode comment, null otherwise.\n */\n findExtraFieldUnicodeComment: function() {\n var ucommentField = this.extraFields[0x6375];\n if (ucommentField) {\n var extraReader = new StringReader(ucommentField.value);\n\n // wrong version\n if (extraReader.readInt(1) !== 1) {\n return null;\n }\n\n // the crc of the comment changed, this field is out of date.\n if (jszipProto.crc32(this.fileComment) !== extraReader.readInt(4)) {\n return null;\n }\n\n return jszipProto.utf8decode(extraReader.readString(ucommentField.length - 5));\n }\n return null;\n }\n};\nmodule.exports = ZipEntry;\n","'use strict';\nvar utils = require('./utils');\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.string2binary = function(str) {\n return utils.string2binary(str);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.string2Uint8Array = function(str) {\n return utils.transformTo(\"uint8array\", str);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.uint8Array2String = function(array) {\n return utils.transformTo(\"string\", array);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.string2Blob = function(str) {\n var buffer = utils.transformTo(\"arraybuffer\", str);\n return utils.arrayBuffer2Blob(buffer);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.arrayBuffer2Blob = function(buffer) {\n return utils.arrayBuffer2Blob(buffer);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.transformTo = function(outputType, input) {\n return utils.transformTo(outputType, input);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.getTypeOf = function(input) {\n return utils.getTypeOf(input);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.checkSupport = function(type) {\n return utils.checkSupport(type);\n};\n\n/**\n * @deprecated\n * This value will be removed in a future version without replacement.\n */\nexports.MAX_VALUE_16BITS = utils.MAX_VALUE_16BITS;\n\n/**\n * @deprecated\n * This value will be removed in a future version without replacement.\n */\nexports.MAX_VALUE_32BITS = utils.MAX_VALUE_32BITS;\n\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.pretty = function(str) {\n return utils.pretty(str);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.findCompression = function(compressionMethod) {\n return utils.findCompression(compressionMethod);\n};\n\n/**\n * @deprecated\n * This function will be removed in a future version without replacement.\n */\nexports.isRegExp = function (object) {\n return utils.isRegExp(object);\n};\n\n","'use strict';\nvar fallback = require('./binaryajax-browser');\nvar Buffer = require('buffer').Buffer\nmodule.exports = async function binaryAjax(url){\n if (!global.fetch) {\n return fallback(url)\n }\n var type = url.slice(-3).toLowerCase();\n var isOptionalTxt = type==='prj' || type === 'cpg';\n try {\n var resp = await fetch(url)\n if (resp.status > 399) {\n throw new Error(resp.statusText);\n }\n if (isOptionalTxt) {\n return resp.text();\n }\n var resp = await resp.arrayBuffer();\n return Buffer.from(resp);\n } catch (e) {\n \tif(isOptionalTxt){\n return false;\n }\n throw e;\n }\n}\n","'use strict';\nvar Promise = require('lie');\nvar Buffer = require('buffer').Buffer\nmodule.exports = binaryAjax;\nfunction binaryAjax(url){\n\treturn new Promise(function(resolve,reject){\n\t\tvar type = url.slice(-3);\n\t\tvar ajax = new XMLHttpRequest();\n\t\tajax.open('GET',url,true);\n\t\tif(type !== 'prj' && type !== 'cpg'){\n\t\t\tajax.responseType='arraybuffer';\n\t\t}\n\t\tajax.addEventListener('load', function (){\n\t\t\tif(ajax.status>399){\n\t\t\t\tif(type==='prj' || type === 'cpg'){\n\t\t\t\t\treturn resolve(false);\n\t\t\t\t}else{\n\t\t\t\t\treturn reject(new Error(ajax.status));\n\t\t\t\t}\n\t\t\t}\n\t\t\tif(type !== 'prj' && type !== 'cpg'){\n\t\t\t\treturn resolve(Buffer.from(ajax.response));\n\t\t\t} else {\n\t\t\t\treturn resolve(ajax.response);\n\t\t\t}\n\t\t}, false);\n\t\tajax.send();\n\t});\n}\n","'use strict';\nvar Mutation = global.MutationObserver || global.WebKitMutationObserver;\n\nvar scheduleDrain;\n\n{\n if (Mutation) {\n var called = 0;\n var observer = new Mutation(nextTick);\n var element = global.document.createTextNode('');\n observer.observe(element, {\n characterData: true\n });\n scheduleDrain = function () {\n element.data = (called = ++called % 2);\n };\n } else if (!global.setImmediate && typeof global.MessageChannel !== 'undefined') {\n var channel = new global.MessageChannel();\n channel.port1.onmessage = nextTick;\n scheduleDrain = function () {\n channel.port2.postMessage(0);\n };\n } else if ('document' in global && 'onreadystatechange' in global.document.createElement('script')) {\n scheduleDrain = function () {\n\n // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted\n // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.\n var scriptEl = global.document.createElement('script');\n scriptEl.onreadystatechange = function () {\n nextTick();\n\n scriptEl.onreadystatechange = null;\n scriptEl.parentNode.removeChild(scriptEl);\n scriptEl = null;\n };\n global.document.documentElement.appendChild(scriptEl);\n };\n } else {\n scheduleDrain = function () {\n setTimeout(nextTick, 0);\n };\n }\n}\n\nvar draining;\nvar queue = [];\n//named nextTick for less confusing stack traces\nfunction nextTick() {\n draining = true;\n var i, oldQueue;\n var len = queue.length;\n while (len) {\n oldQueue = queue;\n queue = [];\n i = -1;\n while (++i < len) {\n oldQueue[i]();\n }\n len = queue.length;\n }\n draining = false;\n}\n\nmodule.exports = immediate;\nfunction immediate(task) {\n if (queue.push(task) === 1 && !draining) {\n scheduleDrain();\n }\n}\n","'use strict';\n\nfunction isClockWise(array) {\n var sum = 0;\n var i = 1;\n var len = array.length;\n var prev, cur;\n while (i < len) {\n prev = cur || array[0];\n cur = array[i];\n sum += ((cur[0] - prev[0]) * (cur[1] + prev[1]));\n i++;\n }\n return sum > 0;\n}\n\nfunction polyReduce(a, b) {\n if (isClockWise(b) || !a.length) {\n a.push([b]);\n } else {\n a[a.length - 1].push(b);\n }\n return a;\n}\nParseShp.prototype.parsePoint = function(data) {\n return {\n 'type': 'Point',\n 'coordinates': this.parseCoord(data, 0)\n };\n};\nParseShp.prototype.parseZPoint = function(data) {\n var pointXY = this.parsePoint(data);\n pointXY.coordinates.push(data.readDoubleLE(16));\n return pointXY;\n};\nParseShp.prototype.parsePointArray = function(data, offset, num) {\n var out = [];\n var done = 0;\n while (done < num) {\n out.push(this.parseCoord(data, offset));\n offset += 16;\n done++;\n }\n return out;\n};\nParseShp.prototype.parseZPointArray = function(data, zOffset, num, coordinates) {\n var i = 0;\n while (i < num) {\n coordinates[i].push(data.readDoubleLE(zOffset));\n i++;\n zOffset += 8;\n }\n return coordinates;\n};\nParseShp.prototype.parseArrayGroup = function(data, offset, partOffset, num, tot) {\n var out = [];\n var done = 0;\n var curNum, nextNum = 0,\n pointNumber;\n while (done < num) {\n done++;\n partOffset += 4;\n curNum = nextNum;\n if (done === num) {\n nextNum = tot;\n } else {\n nextNum = data.readInt32LE(partOffset);\n }\n pointNumber = nextNum - curNum;\n if (!pointNumber) {\n continue;\n }\n out.push(this.parsePointArray(data, offset, pointNumber));\n offset += (pointNumber << 4);\n }\n return out;\n};\nParseShp.prototype.parseZArrayGroup = function(data, zOffset, num, coordinates) {\n var i = 0;\n while (i < num) {\n coordinates[i] = this.parseZPointArray(data, zOffset, coordinates[i].length, coordinates[i]);\n zOffset += (coordinates[i].length << 3);\n i++;\n }\n return coordinates;\n};\nParseShp.prototype.parseMultiPoint = function(data) {\n var out = {};\n var mins = this.parseCoord(data, 0);\n var maxs = this.parseCoord(data, 16);\n out.bbox = [\n mins[0],\n mins[1],\n maxs[0],\n maxs[1]\n ];\n var num = data.readInt32LE(32, true);\n var offset = 36;\n if (num === 1) {\n out.type = 'Point';\n out.coordinates = this.parseCoord(data, offset);\n } else {\n out.type = 'MultiPoint';\n out.coordinates = this.parsePointArray(data, offset, num);\n }\n return out;\n};\nParseShp.prototype.parseZMultiPoint = function(data) {\n var geoJson = this.parseMultiPoint(data);\n var num;\n if (geoJson.type === 'Point') {\n geoJson.coordinates.push(data.readDoubleLE(72));\n return geoJson;\n } else {\n num = geoJson.coordinates.length;\n }\n var zOffset = 52 + (num << 4);\n geoJson.coordinates = this.parseZPointArray(data, zOffset, num, geoJson.coordinates);\n return geoJson;\n};\nParseShp.prototype.parsePolyline = function(data) {\n var out = {};\n var mins = this.parseCoord(data, 0);\n var maxs = this.parseCoord(data, 16);\n out.bbox = [\n mins[0],\n mins[1],\n maxs[0],\n maxs[1]\n ];\n var numParts = data.readInt32LE(32);\n var num = data.readInt32LE(36);\n var offset, partOffset;\n if (numParts === 1) {\n out.type = 'LineString';\n offset = 44;\n out.coordinates = this.parsePointArray(data, offset, num);\n } else {\n out.type = 'MultiLineString';\n offset = 40 + (numParts << 2);\n partOffset = 40;\n out.coordinates = this.parseArrayGroup(data, offset, partOffset, numParts, num);\n }\n return out;\n};\nParseShp.prototype.parseZPolyline = function(data) {\n var geoJson = this.parsePolyline(data);\n var num = geoJson.coordinates.length;\n var zOffset;\n if (geoJson.type === 'LineString') {\n zOffset = 60 + (num << 4);\n geoJson.coordinates = this.parseZPointArray(data, zOffset, num, geoJson.coordinates);\n return geoJson;\n } else {\n var totalPoints = geoJson.coordinates.reduce(function(a, v) {\n return a + v.length;\n }, 0);\n zOffset = 56 + (totalPoints << 4) + (num << 2);\n geoJson.coordinates = this.parseZArrayGroup(data, zOffset, num, geoJson.coordinates);\n return geoJson;\n }\n};\nParseShp.prototype.polyFuncs = function(out) {\n if (out.type === 'LineString') {\n out.type = 'Polygon';\n out.coordinates = [out.coordinates];\n return out;\n } else {\n out.coordinates = out.coordinates.reduce(polyReduce, []);\n if (out.coordinates.length === 1) {\n out.type = 'Polygon';\n out.coordinates = out.coordinates[0];\n return out;\n } else {\n out.type = 'MultiPolygon';\n return out;\n }\n }\n};\nParseShp.prototype.parsePolygon = function(data) {\n return this.polyFuncs(this.parsePolyline(data));\n};\nParseShp.prototype.parseZPolygon = function(data) {\n return this.polyFuncs(this.parseZPolyline(data));\n};\nvar shpFuncObj = {\n 1: 'parsePoint',\n 3: 'parsePolyline',\n 5: 'parsePolygon',\n 8: 'parseMultiPoint',\n 11: 'parseZPoint',\n 13: 'parseZPolyline',\n 15: 'parseZPolygon',\n 18: 'parseZMultiPoint'\n};\n\n\n\nfunction makeParseCoord(trans) {\n if (trans) {\n return function(data, offset) {\n return trans.inverse([data.readDoubleLE(offset), data.readDoubleLE(offset + 8)]);\n };\n } else {\n return function(data, offset) {\n return [data.readDoubleLE(offset), data.readDoubleLE(offset + 8)];\n };\n }\n}\n\nfunction ParseShp(buffer, trans) {\n if (!(this instanceof ParseShp)) {\n return new ParseShp(buffer, trans);\n }\n this.buffer = buffer;\n this.shpFuncs(trans);\n this.rows = this.getRows();\n}\nParseShp.prototype.shpFuncs = function(tran) {\n var num = this.getShpCode();\n if (num > 20) {\n num -= 20;\n }\n if (!(num in shpFuncObj)) {\n throw new Error('I don\\'t know that shp type');\n }\n this.parseFunc = this[shpFuncObj[num]];\n this.parseCoord = makeParseCoord(tran);\n};\nParseShp.prototype.getShpCode = function() {\n return this.parseHeader().shpCode;\n};\nParseShp.prototype.parseHeader = function() {\n var view = this.buffer.slice(0, 100);\n return {\n length: view.readInt32BE(6 << 2),\n version: view.readInt32LE(7 << 2),\n shpCode: view.readInt32LE(8 << 2),\n bbox: [\n view.readDoubleLE(9 << 2),\n view.readDoubleLE(11 << 2),\n view.readDoubleLE(13 << 2),\n view.readDoubleLE(13 << 2)\n ]\n };\n};\nParseShp.prototype.getRows = function() {\n var offset = 100;\n var len = this.buffer.byteLength;\n var out = [];\n var current;\n while (offset < len) {\n current = this.getRow(offset);\n offset += 8;\n offset += current.len;\n if (current.type) {\n out.push(this.parseFunc(current.data));\n } else {\n out.push(null);\n }\n }\n return out;\n};\nParseShp.prototype.getRow = function(offset) {\n var view = this.buffer.slice(offset, offset + 12);\n var len = view.readInt32BE(4) << 1;\n var data = this.buffer.slice(offset + 12, offset + len + 8);\n\n return {\n id: view.readInt32BE(0),\n len: len,\n data: data,\n type: view.readInt32LE(8)\n };\n};\nmodule.exports = function(buffer, trans) {\n return new ParseShp(buffer, trans).rows;\n};\n","var createDecoder = require('./decoder');\nfunction dbfHeader(data) {\n var out = {};\n out.lastUpdated = new Date(data.readUInt8(1) + 1900, data.readUInt8(2), data.readUInt8(3));\n out.records = data.readUInt32LE(4);\n out.headerLen = data.readUInt16LE(8);\n out.recLen = data.readUInt16LE(10);\n return out;\n}\n\nfunction dbfRowHeader(data, headerLen, decoder) {\n var out = [];\n var offset = 32;\n while (offset < headerLen) {\n out.push({\n name: decoder(data.slice(offset, offset + 11)),\n dataType: String.fromCharCode(data.readUInt8(offset + 11)),\n len: data.readUInt8(offset + 16),\n decimal: data.readUInt8(offset + 17)\n });\n if (data.readUInt8(offset + 32) === 13) {\n break;\n } else {\n offset += 32;\n }\n }\n return out;\n}\n\nfunction rowFuncs(buffer, offset, len, type, decoder) {\n var data = buffer.slice(offset, offset + len);\n var textData = decoder(data);\n switch (type) {\n case 'N':\n case 'F':\n case 'O':\n return parseFloat(textData, 10);\n case 'D':\n return new Date(textData.slice(0, 4), parseInt(textData.slice(4, 6), 10) - 1, textData.slice(6, 8));\n case 'L':\n return textData.toLowerCase() === 'y' || textData.toLowerCase() === 't';\n default:\n return textData;\n }\n}\n\nfunction parseRow(buffer, offset, rowHeaders, decoder) {\n var out = {};\n var i = 0;\n var len = rowHeaders.length;\n var field;\n var header;\n while (i < len) {\n header = rowHeaders[i];\n field = rowFuncs(buffer, offset, header.len, header.dataType, decoder);\n offset += header.len;\n if (typeof field !== 'undefined') {\n out[header.name] = field;\n }\n i++;\n }\n return out;\n}\n\nmodule.exports = function(buffer, encoding) {\n var decoder = createDecoder(encoding);\n var header = dbfHeader(buffer);\n var rowHeaders = dbfRowHeader(buffer, header.headerLen - 1, decoder);\n\n var offset = ((rowHeaders.length + 1) << 5) + 2;\n var recLen = header.recLen;\n var records = header.records;\n var out = [];\n while (records) {\n out.push(parseRow(buffer, offset, rowHeaders, decoder));\n offset += recLen;\n records--;\n }\n return out;\n};\n","require('text-encoding-polyfill');\nvar StringDecoder = require('string_decoder').StringDecoder;\nfunction defaultDecoder(data) {\n var decoder = new StringDecoder();\n var out = decoder.write(data) + decoder.end();\n return out.replace(/\\0/g, '').trim();\n}\nmodule.exports = createDecoder;\nvar regex = /^(?:ANSI\\s)?(\\d+)$/m;\nfunction createDecoder(encoding, second) {\n if (!encoding) {\n return defaultDecoder;\n }\n try {\n new TextDecoder(encoding.trim());\n } catch(e) {\n var match = regex.exec(encoding);\n if (match && !second) {\n return createDecoder('windows-' + match[1], true);\n } else {\n return defaultDecoder;\n }\n }\n return browserDecoder;\n function browserDecoder(buffer) {\n var decoder = new TextDecoder(encoding);\n var out = decoder.decode(buffer, {\n stream: true\n }) + decoder.decode();\n return out.replace(/\\0/g, '').trim();\n }\n}\n","// This is free and unencumbered software released into the public domain.\n// See LICENSE.md for more information.\n\nmodule.exports = require(\"./lib/encoding.js\");\n","// This is free and unencumbered software released into the public domain.\n// See LICENSE.md for more information.\n\n/**\n * @fileoverview Global |this| required for resolving indexes in node.\n * @suppress {globalThis}\n */\n(function(global) {\n 'use strict';\n\n // If we're in node require encoding-indexes and attach it to the global.\n if (typeof module !== \"undefined\" && module.exports &&\n !global[\"encoding-indexes\"]) {\n require(\"./encoding-indexes.js\");\n }\n\n //\n // Utilities\n //\n\n /**\n * @param {number} a The number to test.\n * @param {number} min The minimum value in the range, inclusive.\n * @param {number} max The maximum value in the range, inclusive.\n * @return {boolean} True if a >= min and a <= max.\n */\n function inRange(a, min, max) {\n return min <= a && a <= max;\n }\n\n /**\n * @param {!Array.<*>} array The array to check.\n * @param {*} item The item to look for in the array.\n * @return {boolean} True if the item appears in the array.\n */\n function includes(array, item) {\n return array.indexOf(item) !== -1;\n }\n\n var floor = Math.floor;\n\n /**\n * @param {*} o\n * @return {Object}\n */\n function ToDictionary(o) {\n if (o === undefined) return {};\n if (o === Object(o)) return o;\n throw TypeError('Could not convert argument to dictionary');\n }\n\n /**\n * @param {string} string Input string of UTF-16 code units.\n * @return {!Array.<number>} Code points.\n */\n function stringToCodePoints(string) {\n // https://heycam.github.io/webidl/#dfn-obtain-unicode\n\n // 1. Let S be the DOMString value.\n var s = String(string);\n\n // 2. Let n be the length of S.\n var n = s.length;\n\n // 3. Initialize i to 0.\n var i = 0;\n\n // 4. Initialize U to be an empty sequence of Unicode characters.\n var u = [];\n\n // 5. While i < n:\n while (i < n) {\n\n // 1. Let c be the code unit in S at index i.\n var c = s.charCodeAt(i);\n\n // 2. Depending on the value of c:\n\n // c < 0xD800 or c > 0xDFFF\n if (c < 0xD800 || c > 0xDFFF) {\n // Append to U the Unicode character with code point c.\n u.push(c);\n }\n\n // 0xDC00 ≤ c ≤ 0xDFFF\n else if (0xDC00 <= c && c <= 0xDFFF) {\n // Append to U a U+FFFD REPLACEMENT CHARACTER.\n u.push(0xFFFD);\n }\n\n // 0xD800 ≤ c ≤ 0xDBFF\n else if (0xD800 <= c && c <= 0xDBFF) {\n // 1. If i = n−1, then append to U a U+FFFD REPLACEMENT\n // CHARACTER.\n if (i === n - 1) {\n u.push(0xFFFD);\n }\n // 2. Otherwise, i < n−1:\n else {\n // 1. Let d be the code unit in S at index i+1.\n var d = s.charCodeAt(i + 1);\n\n // 2. If 0xDC00 ≤ d ≤ 0xDFFF, then:\n if (0xDC00 <= d && d <= 0xDFFF) {\n // 1. Let a be c & 0x3FF.\n var a = c & 0x3FF;\n\n // 2. Let b be d & 0x3FF.\n var b = d & 0x3FF;\n\n // 3. Append to U the Unicode character with code point\n // 2^16+2^10*a+b.\n u.push(0x10000 + (a << 10) + b);\n\n // 4. Set i to i+1.\n i += 1;\n }\n\n // 3. Otherwise, d < 0xDC00 or d > 0xDFFF. Append to U a\n // U+FFFD REPLACEMENT CHARACTER.\n else {\n u.push(0xFFFD);\n }\n }\n }\n\n // 3. Set i to i+1.\n i += 1;\n }\n\n // 6. Return U.\n return u;\n }\n\n /**\n * @param {!Array.<number>} code_points Array of code points.\n * @return {string} string String of UTF-16 code units.\n */\n function codePointsToString(code_points) {\n var s = '';\n for (var i = 0; i < code_points.length; ++i) {\n var cp = code_points[i];\n if (cp <= 0xFFFF) {\n s += String.fromCharCode(cp);\n } else {\n cp -= 0x10000;\n s += String.fromCharCode((cp >> 10) + 0xD800,\n (cp & 0x3FF) + 0xDC00);\n }\n }\n return s;\n }\n\n\n //\n // Implementation of Encoding specification\n // https://encoding.spec.whatwg.org/\n //\n\n //\n // 4. Terminology\n //\n\n /**\n * An ASCII byte is a byte in the range 0x00 to 0x7F, inclusive.\n * @param {number} a The number to test.\n * @return {boolean} True if a is in the range 0x00 to 0x7F, inclusive.\n */\n function isASCIIByte(a) {\n return 0x00 <= a && a <= 0x7F;\n }\n\n /**\n * An ASCII code point is a code point in the range U+0000 to\n * U+007F, inclusive.\n */\n var isASCIICodePoint = isASCIIByte;\n\n\n /**\n * End-of-stream is a special token that signifies no more tokens\n * are in the stream.\n * @const\n */ var end_of_stream = -1;\n\n /**\n * A stream represents an ordered sequence of tokens.\n *\n * @constructor\n * @param {!(Array.<number>|Uint8Array)} tokens Array of tokens that provide\n * the stream.\n */\n function Stream(tokens) {\n /** @type {!Array.<number>} */\n this.tokens = [].slice.call(tokens);\n // Reversed as push/pop is more efficient than shift/unshift.\n this.tokens.reverse();\n }\n\n Stream.prototype = {\n /**\n * @return {boolean} True if end-of-stream has been hit.\n */\n endOfStream: function() {\n return !this.tokens.length;\n },\n\n /**\n * When a token is read from a stream, the first token in the\n * stream must be returned and subsequently removed, and\n * end-of-stream must be returned otherwise.\n *\n * @return {number} Get the next token from the stream, or\n * end_of_stream.\n */\n read: function() {\n if (!this.tokens.length)\n return end_of_stream;\n return this.tokens.pop();\n },\n\n /**\n * When one or more tokens are prepended to a stream, those tokens\n * must be inserted, in given order, before the first token in the\n * stream.\n *\n * @param {(number|!Array.<number>)} token The token(s) to prepend to the\n * stream.\n */\n prepend: function(token) {\n if (Array.isArray(token)) {\n var tokens = /**@type {!Array.<number>}*/(token);\n while (tokens.length)\n this.tokens.push(tokens.pop());\n } else {\n this.tokens.push(token);\n }\n },\n\n /**\n * When one or more tokens are pushed to a stream, those tokens\n * must be inserted, in given order, after the last token in the\n * stream.\n *\n * @param {(number|!Array.<number>)} token The tokens(s) to push to the\n * stream.\n */\n push: function(token) {\n if (Array.isArray(token)) {\n var tokens = /**@type {!Array.<number>}*/(token);\n while (tokens.length)\n this.tokens.unshift(tokens.shift());\n } else {\n this.tokens.unshift(token);\n }\n }\n };\n\n //\n // 5. Encodings\n //\n\n // 5.1 Encoders and decoders\n\n /** @const */\n var finished = -1;\n\n /**\n * @param {boolean} fatal If true, decoding errors raise an exception.\n * @param {number=} opt_code_point Override the standard fallback code point.\n * @return {number} The code point to insert on a decoding error.\n */\n function decoderError(fatal, opt_code_point) {\n if (fatal)\n throw TypeError('Decoder error');\n return opt_code_point || 0xFFFD;\n }\n\n /**\n * @param {number} code_point The code point that could not be encoded.\n * @return {number} Always throws, no value is actually returned.\n */\n function encoderError(code_point) {\n throw TypeError('The code point ' + code_point + ' could not be encoded.');\n }\n\n /** @interface */\n function Decoder() {}\n Decoder.prototype = {\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point, or |finished|.\n */\n handler: function(stream, bite) {}\n };\n\n /** @interface */\n function Encoder() {}\n Encoder.prototype = {\n /**\n * @param {Stream} stream The stream of code points being encoded.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit, or |finished|.\n */\n handler: function(stream, code_point) {}\n };\n\n // 5.2 Names and labels\n\n // TODO: Define @typedef for Encoding: {name:string,labels:Array.<string>}\n // https://github.com/google/closure-compiler/issues/247\n\n /**\n * @param {string} label The encoding label.\n * @return {?{name:string,labels:Array.<string>}}\n */\n function getEncoding(label) {\n // 1. Remove any leading and trailing ASCII whitespace from label.\n label = String(label).trim().toLowerCase();\n\n // 2. If label is an ASCII case-insensitive match for any of the\n // labels listed in the table below, return the corresponding\n // encoding, and failure otherwise.\n if (Object.prototype.hasOwnProperty.call(label_to_encoding, label)) {\n return label_to_encoding[label];\n }\n return null;\n }\n\n /**\n * Encodings table: https://encoding.spec.whatwg.org/encodings.json\n * @const\n * @type {!Array.<{\n * heading: string,\n * encodings: Array.<{name:string,labels:Array.<string>}>\n * }>}\n */\n var encodings = [\n {\n \"encodings\": [\n {\n \"labels\": [\n \"unicode-1-1-utf-8\",\n \"utf-8\",\n \"utf8\"\n ],\n \"name\": \"UTF-8\"\n }\n ],\n \"heading\": \"The Encoding\"\n },\n {\n \"encodings\": [\n {\n \"labels\": [\n \"866\",\n \"cp866\",\n \"csibm866\",\n \"ibm866\"\n ],\n \"name\": \"IBM866\"\n },\n {\n \"labels\": [\n \"csisolatin2\",\n \"iso-8859-2\",\n \"iso-ir-101\",\n \"iso8859-2\",\n \"iso88592\",\n \"iso_8859-2\",\n \"iso_8859-2:1987\",\n \"l2\",\n \"latin2\"\n ],\n \"name\": \"ISO-8859-2\"\n },\n {\n \"labels\": [\n \"csisolatin3\",\n \"iso-8859-3\",\n \"iso-ir-109\",\n \"iso8859-3\",\n \"iso88593\",\n \"iso_8859-3\",\n \"iso_8859-3:1988\",\n \"l3\",\n \"latin3\"\n ],\n \"name\": \"ISO-8859-3\"\n },\n {\n \"labels\": [\n \"csisolatin4\",\n \"iso-8859-4\",\n \"iso-ir-110\",\n \"iso8859-4\",\n \"iso88594\",\n \"iso_8859-4\",\n \"iso_8859-4:1988\",\n \"l4\",\n \"latin4\"\n ],\n \"name\": \"ISO-8859-4\"\n },\n {\n \"labels\": [\n \"csisolatincyrillic\",\n \"cyrillic\",\n \"iso-8859-5\",\n \"iso-ir-144\",\n \"iso8859-5\",\n \"iso88595\",\n \"iso_8859-5\",\n \"iso_8859-5:1988\"\n ],\n \"name\": \"ISO-8859-5\"\n },\n {\n \"labels\": [\n \"arabic\",\n \"asmo-708\",\n \"csiso88596e\",\n \"csiso88596i\",\n \"csisolatinarabic\",\n \"ecma-114\",\n \"iso-8859-6\",\n \"iso-8859-6-e\",\n \"iso-8859-6-i\",\n \"iso-ir-127\",\n \"iso8859-6\",\n \"iso88596\",\n \"iso_8859-6\",\n \"iso_8859-6:1987\"\n ],\n \"name\": \"ISO-8859-6\"\n },\n {\n \"labels\": [\n \"csisolatingreek\",\n \"ecma-118\",\n \"elot_928\",\n \"greek\",\n \"greek8\",\n \"iso-8859-7\",\n \"iso-ir-126\",\n \"iso8859-7\",\n \"iso88597\",\n \"iso_8859-7\",\n \"iso_8859-7:1987\",\n \"sun_eu_greek\"\n ],\n \"name\": \"ISO-8859-7\"\n },\n {\n \"labels\": [\n \"csiso88598e\",\n \"csisolatinhebrew\",\n \"hebrew\",\n \"iso-8859-8\",\n \"iso-8859-8-e\",\n \"iso-ir-138\",\n \"iso8859-8\",\n \"iso88598\",\n \"iso_8859-8\",\n \"iso_8859-8:1988\",\n \"visual\"\n ],\n \"name\": \"ISO-8859-8\"\n },\n {\n \"labels\": [\n \"csiso88598i\",\n \"iso-8859-8-i\",\n \"logical\"\n ],\n \"name\": \"ISO-8859-8-I\"\n },\n {\n \"labels\": [\n \"csisolatin6\",\n \"iso-8859-10\",\n \"iso-ir-157\",\n \"iso8859-10\",\n \"iso885910\",\n \"l6\",\n \"latin6\"\n ],\n \"name\": \"ISO-8859-10\"\n },\n {\n \"labels\": [\n \"iso-8859-13\",\n \"iso8859-13\",\n \"iso885913\"\n ],\n \"name\": \"ISO-8859-13\"\n },\n {\n \"labels\": [\n \"iso-8859-14\",\n \"iso8859-14\",\n \"iso885914\"\n ],\n \"name\": \"ISO-8859-14\"\n },\n {\n \"labels\": [\n \"csisolatin9\",\n \"iso-8859-15\",\n \"iso8859-15\",\n \"iso885915\",\n \"iso_8859-15\",\n \"l9\"\n ],\n \"name\": \"ISO-8859-15\"\n },\n {\n \"labels\": [\n \"iso-8859-16\"\n ],\n \"name\": \"ISO-8859-16\"\n },\n {\n \"labels\": [\n \"cskoi8r\",\n \"koi\",\n \"koi8\",\n \"koi8-r\",\n \"koi8_r\"\n ],\n \"name\": \"KOI8-R\"\n },\n {\n \"labels\": [\n \"koi8-ru\",\n \"koi8-u\"\n ],\n \"name\": \"KOI8-U\"\n },\n {\n \"labels\": [\n \"csmacintosh\",\n \"mac\",\n \"macintosh\",\n \"x-mac-roman\"\n ],\n \"name\": \"macintosh\"\n },\n {\n \"labels\": [\n \"dos-874\",\n \"iso-8859-11\",\n \"iso8859-11\",\n \"iso885911\",\n \"tis-620\",\n \"windows-874\"\n ],\n \"name\": \"windows-874\"\n },\n {\n \"labels\": [\n \"cp1250\",\n \"windows-1250\",\n \"x-cp1250\"\n ],\n \"name\": \"windows-1250\"\n },\n {\n \"labels\": [\n \"cp1251\",\n \"windows-1251\",\n \"x-cp1251\"\n ],\n \"name\": \"windows-1251\"\n },\n {\n \"labels\": [\n \"ansi_x3.4-1968\",\n \"ascii\",\n \"cp1252\",\n \"cp819\",\n \"csisolatin1\",\n \"ibm819\",\n \"iso-8859-1\",\n \"iso-ir-100\",\n \"iso8859-1\",\n \"iso88591\",\n \"iso_8859-1\",\n \"iso_8859-1:1987\",\n \"l1\",\n \"latin1\",\n \"us-ascii\",\n \"windows-1252\",\n \"x-cp1252\"\n ],\n \"name\": \"windows-1252\"\n },\n {\n \"labels\": [\n \"cp1253\",\n \"windows-1253\",\n \"x-cp1253\"\n ],\n \"name\": \"windows-1253\"\n },\n {\n \"labels\": [\n \"cp1254\",\n \"csisolatin5\",\n \"iso-8859-9\",\n \"iso-ir-148\",\n \"iso8859-9\",\n \"iso88599\",\n \"iso_8859-9\",\n \"iso_8859-9:1989\",\n \"l5\",\n \"latin5\",\n \"windows-1254\",\n \"x-cp1254\"\n ],\n \"name\": \"windows-1254\"\n },\n {\n \"labels\": [\n \"cp1255\",\n \"windows-1255\",\n \"x-cp1255\"\n ],\n \"name\": \"windows-1255\"\n },\n {\n \"labels\": [\n \"cp1256\",\n \"windows-1256\",\n \"x-cp1256\"\n ],\n \"name\": \"windows-1256\"\n },\n {\n \"labels\": [\n \"cp1257\",\n \"windows-1257\",\n \"x-cp1257\"\n ],\n \"name\": \"windows-1257\"\n },\n {\n \"labels\": [\n \"cp1258\",\n \"windows-1258\",\n \"x-cp1258\"\n ],\n \"name\": \"windows-1258\"\n },\n {\n \"labels\": [\n \"x-mac-cyrillic\",\n \"x-mac-ukrainian\"\n ],\n \"name\": \"x-mac-cyrillic\"\n }\n ],\n \"heading\": \"Legacy single-byte encodings\"\n },\n {\n \"encodings\": [\n {\n \"labels\": [\n \"chinese\",\n \"csgb2312\",\n \"csiso58gb231280\",\n \"gb2312\",\n \"gb_2312\",\n \"gb_2312-80\",\n \"gbk\",\n \"iso-ir-58\",\n \"x-gbk\"\n ],\n \"name\": \"GBK\"\n },\n {\n \"labels\": [\n \"gb18030\"\n ],\n \"name\": \"gb18030\"\n }\n ],\n \"heading\": \"Legacy multi-byte Chinese (simplified) encodings\"\n },\n {\n \"encodings\": [\n {\n \"labels\": [\n \"big5\",\n \"big5-hkscs\",\n \"cn-big5\",\n \"csbig5\",\n \"x-x-big5\"\n ],\n \"name\": \"Big5\"\n }\n ],\n \"heading\": \"Legacy multi-byte Chinese (traditional) encodings\"\n },\n {\n \"encodings\": [\n {\n \"labels\": [\n \"cseucpkdfmtjapanese\",\n \"euc-jp\",\n \"x-euc-jp\"\n ],\n \"name\": \"EUC-JP\"\n },\n {\n \"labels\": [\n \"csiso2022jp\",\n \"iso-2022-jp\"\n ],\n \"name\": \"ISO-2022-JP\"\n },\n {\n \"labels\": [\n \"csshiftjis\",\n \"ms932\",\n \"ms_kanji\",\n \"shift-jis\",\n \"shift_jis\",\n \"sjis\",\n \"windows-31j\",\n \"x-sjis\"\n ],\n \"name\": \"Shift_JIS\"\n }\n ],\n \"heading\": \"Legacy multi-byte Japanese encodings\"\n },\n {\n \"encodings\": [\n {\n \"labels\": [\n \"cseuckr\",\n \"csksc56011987\",\n \"euc-kr\",\n \"iso-ir-149\",\n \"korean\",\n \"ks_c_5601-1987\",\n \"ks_c_5601-1989\",\n \"ksc5601\",\n \"ksc_5601\",\n \"windows-949\"\n ],\n \"name\": \"EUC-KR\"\n }\n ],\n \"heading\": \"Legacy multi-byte Korean encodings\"\n },\n {\n \"encodings\": [\n {\n \"labels\": [\n \"csiso2022kr\",\n \"hz-gb-2312\",\n \"iso-2022-cn\",\n \"iso-2022-cn-ext\",\n \"iso-2022-kr\"\n ],\n \"name\": \"replacement\"\n },\n {\n \"labels\": [\n \"utf-16be\"\n ],\n \"name\": \"UTF-16BE\"\n },\n {\n \"labels\": [\n \"utf-16\",\n \"utf-16le\"\n ],\n \"name\": \"UTF-16LE\"\n },\n {\n \"labels\": [\n \"x-user-defined\"\n ],\n \"name\": \"x-user-defined\"\n }\n ],\n \"heading\": \"Legacy miscellaneous encodings\"\n }\n ];\n\n // Label to encoding registry.\n /** @type {Object.<string,{name:string,labels:Array.<string>}>} */\n var label_to_encoding = {};\n encodings.forEach(function(category) {\n category.encodings.forEach(function(encoding) {\n encoding.labels.forEach(function(label) {\n label_to_encoding[label] = encoding;\n });\n });\n });\n\n // Registry of of encoder/decoder factories, by encoding name.\n /** @type {Object.<string, function({fatal:boolean}): Encoder>} */\n var encoders = {};\n /** @type {Object.<string, function({fatal:boolean}): Decoder>} */\n var decoders = {};\n\n //\n // 6. Indexes\n //\n\n /**\n * @param {number} pointer The |pointer| to search for.\n * @param {(!Array.<?number>|undefined)} index The |index| to search within.\n * @return {?number} The code point corresponding to |pointer| in |index|,\n * or null if |code point| is not in |index|.\n */\n function indexCodePointFor(pointer, index) {\n if (!index) return null;\n return index[pointer] || null;\n }\n\n /**\n * @param {number} code_point The |code point| to search for.\n * @param {!Array.<?number>} index The |index| to search within.\n * @return {?number} The first pointer corresponding to |code point| in\n * |index|, or null if |code point| is not in |index|.\n */\n function indexPointerFor(code_point, index) {\n var pointer = index.indexOf(code_point);\n return pointer === -1 ? null : pointer;\n }\n\n /**\n * @param {string} name Name of the index.\n * @return {(!Array.<number>|!Array.<Array.<number>>)}\n * */\n function index(name) {\n if (!('encoding-indexes' in global)) {\n throw Error(\"Indexes missing.\" +\n \" Did you forget to include encoding-indexes.js first?\");\n }\n return global['encoding-indexes'][name];\n }\n\n /**\n * @param {number} pointer The |pointer| to search for in the gb18030 index.\n * @return {?number} The code point corresponding to |pointer| in |index|,\n * or null if |code point| is not in the gb18030 index.\n */\n function indexGB18030RangesCodePointFor(pointer) {\n // 1. If pointer is greater than 39419 and less than 189000, or\n // pointer is greater than 1237575, return null.\n if ((pointer > 39419 && pointer < 189000) || (pointer > 1237575))\n return null;\n\n // 2. If pointer is 7457, return code point U+E7C7.\n if (pointer === 7457) return 0xE7C7;\n\n // 3. Let offset be the last pointer in index gb18030 ranges that\n // is equal to or less than pointer and let code point offset be\n // its corresponding code point.\n var offset = 0;\n var code_point_offset = 0;\n var idx = index('gb18030-ranges');\n var i;\n for (i = 0; i < idx.length; ++i) {\n /** @type {!Array.<number>} */\n var entry = idx[i];\n if (entry[0] <= pointer) {\n offset = entry[0];\n code_point_offset = entry[1];\n } else {\n break;\n }\n }\n\n // 4. Return a code point whose value is code point offset +\n // pointer − offset.\n return code_point_offset + pointer - offset;\n }\n\n /**\n * @param {number} code_point The |code point| to locate in the gb18030 index.\n * @return {number} The first pointer corresponding to |code point| in the\n * gb18030 index.\n */\n function indexGB18030RangesPointerFor(code_point) {\n // 1. If code point is U+E7C7, return pointer 7457.\n if (code_point === 0xE7C7) return 7457;\n\n // 2. Let offset be the last code point in index gb18030 ranges\n // that is equal to or less than code point and let pointer offset\n // be its corresponding pointer.\n var offset = 0;\n var pointer_offset = 0;\n var idx = index('gb18030-ranges');\n var i;\n for (i = 0; i < idx.length; ++i) {\n /** @type {!Array.<number>} */\n var entry = idx[i];\n if (entry[1] <= code_point) {\n offset = entry[1];\n pointer_offset = entry[0];\n } else {\n break;\n }\n }\n\n // 3. Return a pointer whose value is pointer offset + code point\n // − offset.\n return pointer_offset + code_point - offset;\n }\n\n /**\n * @param {number} code_point The |code_point| to search for in the Shift_JIS\n * index.\n * @return {?number} The code point corresponding to |pointer| in |index|,\n * or null if |code point| is not in the Shift_JIS index.\n */\n function indexShiftJISPointerFor(code_point) {\n // 1. Let index be index jis0208 excluding all entries whose\n // pointer is in the range 8272 to 8835, inclusive.\n shift_jis_index = shift_jis_index ||\n index('jis0208').map(function(code_point, pointer) {\n return inRange(pointer, 8272, 8835) ? null : code_point;\n });\n var index_ = shift_jis_index;\n\n // 2. Return the index pointer for code point in index.\n return index_.indexOf(code_point);\n }\n var shift_jis_index;\n\n /**\n * @param {number} code_point The |code_point| to search for in the big5\n * index.\n * @return {?number} The code point corresponding to |pointer| in |index|,\n * or null if |code point| is not in the big5 index.\n */\n function indexBig5PointerFor(code_point) {\n // 1. Let index be index Big5 excluding all entries whose pointer\n big5_index_no_hkscs = big5_index_no_hkscs ||\n index('big5').map(function(code_point, pointer) {\n return (pointer < (0xA1 - 0x81) * 157) ? null : code_point;\n });\n var index_ = big5_index_no_hkscs;\n\n // 2. If code point is U+2550, U+255E, U+2561, U+256A, U+5341, or\n // U+5345, return the last pointer corresponding to code point in\n // index.\n if (code_point === 0x2550 || code_point === 0x255E ||\n code_point === 0x2561 || code_point === 0x256A ||\n code_point === 0x5341 || code_point === 0x5345) {\n return index_.lastIndexOf(code_point);\n }\n\n // 3. Return the index pointer for code point in index.\n return indexPointerFor(code_point, index_);\n }\n var big5_index_no_hkscs;\n\n //\n // 8. API\n //\n\n /** @const */ var DEFAULT_ENCODING = 'utf-8';\n\n // 8.1 Interface TextDecoder\n\n /**\n * @constructor\n * @param {string=} label The label of the encoding;\n * defaults to 'utf-8'.\n * @param {Object=} options\n */\n function TextDecoder(label, options) {\n // Web IDL conventions\n if (!(this instanceof TextDecoder))\n throw TypeError('Called as a function. Did you forget \\'new\\'?');\n label = label !== undefined ? String(label) : DEFAULT_ENCODING;\n options = ToDictionary(options);\n\n // A TextDecoder object has an associated encoding, decoder,\n // stream, ignore BOM flag (initially unset), BOM seen flag\n // (initially unset), error mode (initially replacement), and do\n // not flush flag (initially unset).\n\n /** @private */\n this._encoding = null;\n /** @private @type {?Decoder} */\n this._decoder = null;\n /** @private @type {boolean} */\n this._ignoreBOM = false;\n /** @private @type {boolean} */\n this._BOMseen = false;\n /** @private @type {string} */\n this._error_mode = 'replacement';\n /** @private @type {boolean} */\n this._do_not_flush = false;\n\n\n // 1. Let encoding be the result of getting an encoding from\n // label.\n var encoding = getEncoding(label);\n\n // 2. If encoding is failure or replacement, throw a RangeError.\n if (encoding === null || encoding.name === 'replacement')\n throw RangeError('Unknown encoding: ' + label);\n if (!decoders[encoding.name]) {\n throw Error('Decoder not present.' +\n ' Did you forget to include encoding-indexes.js first?');\n }\n\n // 3. Let dec be a new TextDecoder object.\n var dec = this;\n\n // 4. Set dec's encoding to encoding.\n dec._encoding = encoding;\n\n // 5. If options's fatal member is true, set dec's error mode to\n // fatal.\n if (Boolean(options['fatal']))\n dec._error_mode = 'fatal';\n\n // 6. If options's ignoreBOM member is true, set dec's ignore BOM\n // flag.\n if (Boolean(options['ignoreBOM']))\n dec._ignoreBOM = true;\n\n // For pre-ES5 runtimes:\n if (!Object.defineProperty) {\n this.encoding = dec._encoding.name.toLowerCase();\n this.fatal = dec._error_mode === 'fatal';\n this.ignoreBOM = dec._ignoreBOM;\n }\n\n // 7. Return dec.\n return dec;\n }\n\n if (Object.defineProperty) {\n // The encoding attribute's getter must return encoding's name.\n Object.defineProperty(TextDecoder.prototype, 'encoding', {\n /** @this {TextDecoder} */\n get: function() { return this._encoding.name.toLowerCase(); }\n });\n\n // The fatal attribute's getter must return true if error mode\n // is fatal, and false otherwise.\n Object.defineProperty(TextDecoder.prototype, 'fatal', {\n /** @this {TextDecoder} */\n get: function() { return this._error_mode === 'fatal'; }\n });\n\n // The ignoreBOM attribute's getter must return true if ignore\n // BOM flag is set, and false otherwise.\n Object.defineProperty(TextDecoder.prototype, 'ignoreBOM', {\n /** @this {TextDecoder} */\n get: function() { return this._ignoreBOM; }\n });\n }\n\n /**\n * @param {BufferSource=} input The buffer of bytes to decode.\n * @param {Object=} options\n * @return {string} The decoded string.\n */\n TextDecoder.prototype.decode = function decode(input, options) {\n var bytes;\n if (typeof input === 'object' && input instanceof ArrayBuffer) {\n bytes = new Uint8Array(input);\n } else if (typeof input === 'object' && 'buffer' in input &&\n input.buffer instanceof ArrayBuffer) {\n bytes = new Uint8Array(input.buffer,\n input.byteOffset,\n input.byteLength);\n } else {\n bytes = new Uint8Array(0);\n }\n\n options = ToDictionary(options);\n\n // 1. If the do not flush flag is unset, set decoder to a new\n // encoding's decoder, set stream to a new stream, and unset the\n // BOM seen flag.\n if (!this._do_not_flush) {\n this._decoder = decoders[this._encoding.name]({\n fatal: this._error_mode === 'fatal'});\n this._BOMseen = false;\n }\n\n // 2. If options's stream is true, set the do not flush flag, and\n // unset the do not flush flag otherwise.\n this._do_not_flush = Boolean(options['stream']);\n\n // 3. If input is given, push a copy of input to stream.\n // TODO: Align with spec algorithm - maintain stream on instance.\n var input_stream = new Stream(bytes);\n\n // 4. Let output be a new stream.\n var output = [];\n\n /** @type {?(number|!Array.<number>)} */\n var result;\n\n // 5. While true:\n while (true) {\n // 1. Let token be the result of reading from stream.\n var token = input_stream.read();\n\n // 2. If token is end-of-stream and the do not flush flag is\n // set, return output, serialized.\n // TODO: Align with spec algorithm.\n if (token === end_of_stream)\n break;\n\n // 3. Otherwise, run these subsubsteps:\n\n // 1. Let result be the result of processing token for decoder,\n // stream, output, and error mode.\n result = this._decoder.handler(input_stream, token);\n\n // 2. If result is finished, return output, serialized.\n if (result === finished)\n break;\n\n if (result !== null) {\n if (Array.isArray(result))\n output.push.apply(output, /**@type {!Array.<number>}*/(result));\n else\n output.push(result);\n }\n\n // 3. Otherwise, if result is error, throw a TypeError.\n // (Thrown in handler)\n\n // 4. Otherwise, do nothing.\n }\n // TODO: Align with spec algorithm.\n if (!this._do_not_flush) {\n do {\n result = this._decoder.handler(input_stream, input_stream.read());\n if (result === finished)\n break;\n if (result === null)\n continue;\n if (Array.isArray(result))\n output.push.apply(output, /**@type {!Array.<number>}*/(result));\n else\n output.push(result);\n } while (!input_stream.endOfStream());\n this._decoder = null;\n }\n\n // A TextDecoder object also has an associated serialize stream\n // algorithm...\n /**\n * @param {!Array.<number>} stream\n * @return {string}\n * @this {TextDecoder}\n */\n function serializeStream(stream) {\n // 1. Let token be the result of reading from stream.\n // (Done in-place on array, rather than as a stream)\n\n // 2. If encoding is UTF-8, UTF-16BE, or UTF-16LE, and ignore\n // BOM flag and BOM seen flag are unset, run these subsubsteps:\n if (includes(['UTF-8', 'UTF-16LE', 'UTF-16BE'], this._encoding.name) &&\n !this._ignoreBOM && !this._BOMseen) {\n if (stream.length > 0 && stream[0] === 0xFEFF) {\n // 1. If token is U+FEFF, set BOM seen flag.\n this._BOMseen = true;\n stream.shift();\n } else if (stream.length > 0) {\n // 2. Otherwise, if token is not end-of-stream, set BOM seen\n // flag and append token to stream.\n this._BOMseen = true;\n } else {\n // 3. Otherwise, if token is not end-of-stream, append token\n // to output.\n // (no-op)\n }\n }\n // 4. Otherwise, return output.\n return codePointsToString(stream);\n }\n\n return serializeStream.call(this, output);\n };\n\n // 8.2 Interface TextEncoder\n\n /**\n * @constructor\n * @param {string=} label The label of the encoding. NONSTANDARD.\n * @param {Object=} options NONSTANDARD.\n */\n function TextEncoder(label, options) {\n // Web IDL conventions\n if (!(this instanceof TextEncoder))\n throw TypeError('Called as a function. Did you forget \\'new\\'?');\n options = ToDictionary(options);\n\n // A TextEncoder object has an associated encoding and encoder.\n\n /** @private */\n this._encoding = null;\n /** @private @type {?Encoder} */\n this._encoder = null;\n\n // Non-standard\n /** @private @type {boolean} */\n this._do_not_flush = false;\n /** @private @type {string} */\n this._fatal = Boolean(options['fatal']) ? 'fatal' : 'replacement';\n\n // 1. Let enc be a new TextEncoder object.\n var enc = this;\n\n // 2. Set enc's encoding to UTF-8's encoder.\n if (Boolean(options['NONSTANDARD_allowLegacyEncoding'])) {\n // NONSTANDARD behavior.\n label = label !== undefined ? String(label) : DEFAULT_ENCODING;\n var encoding = getEncoding(label);\n if (encoding === null || encoding.name === 'replacement')\n throw RangeError('Unknown encoding: ' + label);\n if (!encoders[encoding.name]) {\n throw Error('Encoder not present.' +\n ' Did you forget to include encoding-indexes.js first?');\n }\n enc._encoding = encoding;\n } else {\n // Standard behavior.\n enc._encoding = getEncoding('utf-8');\n\n if (label !== undefined && 'console' in global) {\n console.warn('TextEncoder constructor called with encoding label, '\n + 'which is ignored.');\n }\n }\n\n // For pre-ES5 runtimes:\n if (!Object.defineProperty)\n this.encoding = enc._encoding.name.toLowerCase();\n\n // 3. Return enc.\n return enc;\n }\n\n if (Object.defineProperty) {\n // The encoding attribute's getter must return encoding's name.\n Object.defineProperty(TextEncoder.prototype, 'encoding', {\n /** @this {TextEncoder} */\n get: function() { return this._encoding.name.toLowerCase(); }\n });\n }\n\n /**\n * @param {string=} opt_string The string to encode.\n * @param {Object=} options\n * @return {!Uint8Array} Encoded bytes, as a Uint8Array.\n */\n TextEncoder.prototype.encode = function encode(opt_string, options) {\n opt_string = opt_string === undefined ? '' : String(opt_string);\n options = ToDictionary(options);\n\n // NOTE: This option is nonstandard. None of the encodings\n // permitted for encoding (i.e. UTF-8, UTF-16) are stateful when\n // the input is a USVString so streaming is not necessary.\n if (!this._do_not_flush)\n this._encoder = encoders[this._encoding.name]({\n fatal: this._fatal === 'fatal'});\n this._do_not_flush = Boolean(options['stream']);\n\n // 1. Convert input to a stream.\n var input = new Stream(stringToCodePoints(opt_string));\n\n // 2. Let output be a new stream\n var output = [];\n\n /** @type {?(number|!Array.<number>)} */\n var result;\n // 3. While true, run these substeps:\n while (true) {\n // 1. Let token be the result of reading from input.\n var token = input.read();\n if (token === end_of_stream)\n break;\n // 2. Let result be the result of processing token for encoder,\n // input, output.\n result = this._encoder.handler(input, token);\n if (result === finished)\n break;\n if (Array.isArray(result))\n output.push.apply(output, /**@type {!Array.<number>}*/(result));\n else\n output.push(result);\n }\n // TODO: Align with spec algorithm.\n if (!this._do_not_flush) {\n while (true) {\n result = this._encoder.handler(input, input.read());\n if (result === finished)\n break;\n if (Array.isArray(result))\n output.push.apply(output, /**@type {!Array.<number>}*/(result));\n else\n output.push(result);\n }\n this._encoder = null;\n }\n // 3. If result is finished, convert output into a byte sequence,\n // and then return a Uint8Array object wrapping an ArrayBuffer\n // containing output.\n return new Uint8Array(output);\n };\n\n\n //\n // 9. The encoding\n //\n\n // 9.1 utf-8\n\n // 9.1.1 utf-8 decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function UTF8Decoder(options) {\n var fatal = options.fatal;\n\n // utf-8's decoder's has an associated utf-8 code point, utf-8\n // bytes seen, and utf-8 bytes needed (all initially 0), a utf-8\n // lower boundary (initially 0x80), and a utf-8 upper boundary\n // (initially 0xBF).\n var /** @type {number} */ utf8_code_point = 0,\n /** @type {number} */ utf8_bytes_seen = 0,\n /** @type {number} */ utf8_bytes_needed = 0,\n /** @type {number} */ utf8_lower_boundary = 0x80,\n /** @type {number} */ utf8_upper_boundary = 0xBF;\n\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream and utf-8 bytes needed is not 0,\n // set utf-8 bytes needed to 0 and return error.\n if (bite === end_of_stream && utf8_bytes_needed !== 0) {\n utf8_bytes_needed = 0;\n return decoderError(fatal);\n }\n\n // 2. If byte is end-of-stream, return finished.\n if (bite === end_of_stream)\n return finished;\n\n // 3. If utf-8 bytes needed is 0, based on byte:\n if (utf8_bytes_needed === 0) {\n\n // 0x00 to 0x7F\n if (inRange(bite, 0x00, 0x7F)) {\n // Return a code point whose value is byte.\n return bite;\n }\n\n // 0xC2 to 0xDF\n else if (inRange(bite, 0xC2, 0xDF)) {\n // 1. Set utf-8 bytes needed to 1.\n utf8_bytes_needed = 1;\n\n // 2. Set UTF-8 code point to byte & 0x1F.\n utf8_code_point = bite & 0x1F;\n }\n\n // 0xE0 to 0xEF\n else if (inRange(bite, 0xE0, 0xEF)) {\n // 1. If byte is 0xE0, set utf-8 lower boundary to 0xA0.\n if (bite === 0xE0)\n utf8_lower_boundary = 0xA0;\n // 2. If byte is 0xED, set utf-8 upper boundary to 0x9F.\n if (bite === 0xED)\n utf8_upper_boundary = 0x9F;\n // 3. Set utf-8 bytes needed to 2.\n utf8_bytes_needed = 2;\n // 4. Set UTF-8 code point to byte & 0xF.\n utf8_code_point = bite & 0xF;\n }\n\n // 0xF0 to 0xF4\n else if (inRange(bite, 0xF0, 0xF4)) {\n // 1. If byte is 0xF0, set utf-8 lower boundary to 0x90.\n if (bite === 0xF0)\n utf8_lower_boundary = 0x90;\n // 2. If byte is 0xF4, set utf-8 upper boundary to 0x8F.\n if (bite === 0xF4)\n utf8_upper_boundary = 0x8F;\n // 3. Set utf-8 bytes needed to 3.\n utf8_bytes_needed = 3;\n // 4. Set UTF-8 code point to byte & 0x7.\n utf8_code_point = bite & 0x7;\n }\n\n // Otherwise\n else {\n // Return error.\n return decoderError(fatal);\n }\n\n // Return continue.\n return null;\n }\n\n // 4. If byte is not in the range utf-8 lower boundary to utf-8\n // upper boundary, inclusive, run these substeps:\n if (!inRange(bite, utf8_lower_boundary, utf8_upper_boundary)) {\n\n // 1. Set utf-8 code point, utf-8 bytes needed, and utf-8\n // bytes seen to 0, set utf-8 lower boundary to 0x80, and set\n // utf-8 upper boundary to 0xBF.\n utf8_code_point = utf8_bytes_needed = utf8_bytes_seen = 0;\n utf8_lower_boundary = 0x80;\n utf8_upper_boundary = 0xBF;\n\n // 2. Prepend byte to stream.\n stream.prepend(bite);\n\n // 3. Return error.\n return decoderError(fatal);\n }\n\n // 5. Set utf-8 lower boundary to 0x80 and utf-8 upper boundary\n // to 0xBF.\n utf8_lower_boundary = 0x80;\n utf8_upper_boundary = 0xBF;\n\n // 6. Set UTF-8 code point to (UTF-8 code point << 6) | (byte &\n // 0x3F)\n utf8_code_point = (utf8_code_point << 6) | (bite & 0x3F);\n\n // 7. Increase utf-8 bytes seen by one.\n utf8_bytes_seen += 1;\n\n // 8. If utf-8 bytes seen is not equal to utf-8 bytes needed,\n // continue.\n if (utf8_bytes_seen !== utf8_bytes_needed)\n return null;\n\n // 9. Let code point be utf-8 code point.\n var code_point = utf8_code_point;\n\n // 10. Set utf-8 code point, utf-8 bytes needed, and utf-8 bytes\n // seen to 0.\n utf8_code_point = utf8_bytes_needed = utf8_bytes_seen = 0;\n\n // 11. Return a code point whose value is code point.\n return code_point;\n };\n }\n\n // 9.1.2 utf-8 encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n */\n function UTF8Encoder(options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point, return a byte whose\n // value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 3. Set count and offset based on the range code point is in:\n var count, offset;\n // U+0080 to U+07FF, inclusive:\n if (inRange(code_point, 0x0080, 0x07FF)) {\n // 1 and 0xC0\n count = 1;\n offset = 0xC0;\n }\n // U+0800 to U+FFFF, inclusive:\n else if (inRange(code_point, 0x0800, 0xFFFF)) {\n // 2 and 0xE0\n count = 2;\n offset = 0xE0;\n }\n // U+10000 to U+10FFFF, inclusive:\n else if (inRange(code_point, 0x10000, 0x10FFFF)) {\n // 3 and 0xF0\n count = 3;\n offset = 0xF0;\n }\n\n // 4. Let bytes be a byte sequence whose first byte is (code\n // point >> (6 × count)) + offset.\n var bytes = [(code_point >> (6 * count)) + offset];\n\n // 5. Run these substeps while count is greater than 0:\n while (count > 0) {\n\n // 1. Set temp to code point >> (6 × (count − 1)).\n var temp = code_point >> (6 * (count - 1));\n\n // 2. Append to bytes 0x80 | (temp & 0x3F).\n bytes.push(0x80 | (temp & 0x3F));\n\n // 3. Decrease count by one.\n count -= 1;\n }\n\n // 6. Return bytes bytes, in order.\n return bytes;\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['UTF-8'] = function(options) {\n return new UTF8Encoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['UTF-8'] = function(options) {\n return new UTF8Decoder(options);\n };\n\n //\n // 10. Legacy single-byte encodings\n //\n\n // 10.1 single-byte decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {!Array.<number>} index The encoding index.\n * @param {{fatal: boolean}} options\n */\n function SingleByteDecoder(index, options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream, return finished.\n if (bite === end_of_stream)\n return finished;\n\n // 2. If byte is an ASCII byte, return a code point whose value\n // is byte.\n if (isASCIIByte(bite))\n return bite;\n\n // 3. Let code point be the index code point for byte − 0x80 in\n // index single-byte.\n var code_point = index[bite - 0x80];\n\n // 4. If code point is null, return error.\n if (code_point === null)\n return decoderError(fatal);\n\n // 5. Return a code point whose value is code point.\n return code_point;\n };\n }\n\n // 10.2 single-byte encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {!Array.<?number>} index The encoding index.\n * @param {{fatal: boolean}} options\n */\n function SingleByteEncoder(index, options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point, return a byte whose\n // value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 3. Let pointer be the index pointer for code point in index\n // single-byte.\n var pointer = indexPointerFor(code_point, index);\n\n // 4. If pointer is null, return error with code point.\n if (pointer === null)\n encoderError(code_point);\n\n // 5. Return a byte whose value is pointer + 0x80.\n return pointer + 0x80;\n };\n }\n\n (function() {\n if (!('encoding-indexes' in global))\n return;\n encodings.forEach(function(category) {\n if (category.heading !== 'Legacy single-byte encodings')\n return;\n category.encodings.forEach(function(encoding) {\n var name = encoding.name;\n var idx = index(name.toLowerCase());\n /** @param {{fatal: boolean}} options */\n decoders[name] = function(options) {\n return new SingleByteDecoder(idx, options);\n };\n /** @param {{fatal: boolean}} options */\n encoders[name] = function(options) {\n return new SingleByteEncoder(idx, options);\n };\n });\n });\n }());\n\n //\n // 11. Legacy multi-byte Chinese (simplified) encodings\n //\n\n // 11.1 gbk\n\n // 11.1.1 gbk decoder\n // gbk's decoder is gb18030's decoder.\n /** @param {{fatal: boolean}} options */\n decoders['GBK'] = function(options) {\n return new GB18030Decoder(options);\n };\n\n // 11.1.2 gbk encoder\n // gbk's encoder is gb18030's encoder with its gbk flag set.\n /** @param {{fatal: boolean}} options */\n encoders['GBK'] = function(options) {\n return new GB18030Encoder(options, true);\n };\n\n // 11.2 gb18030\n\n // 11.2.1 gb18030 decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function GB18030Decoder(options) {\n var fatal = options.fatal;\n // gb18030's decoder has an associated gb18030 first, gb18030\n // second, and gb18030 third (all initially 0x00).\n var /** @type {number} */ gb18030_first = 0x00,\n /** @type {number} */ gb18030_second = 0x00,\n /** @type {number} */ gb18030_third = 0x00;\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream and gb18030 first, gb18030\n // second, and gb18030 third are 0x00, return finished.\n if (bite === end_of_stream && gb18030_first === 0x00 &&\n gb18030_second === 0x00 && gb18030_third === 0x00) {\n return finished;\n }\n // 2. If byte is end-of-stream, and gb18030 first, gb18030\n // second, or gb18030 third is not 0x00, set gb18030 first,\n // gb18030 second, and gb18030 third to 0x00, and return error.\n if (bite === end_of_stream &&\n (gb18030_first !== 0x00 || gb18030_second !== 0x00 ||\n gb18030_third !== 0x00)) {\n gb18030_first = 0x00;\n gb18030_second = 0x00;\n gb18030_third = 0x00;\n decoderError(fatal);\n }\n var code_point;\n // 3. If gb18030 third is not 0x00, run these substeps:\n if (gb18030_third !== 0x00) {\n // 1. Let code point be null.\n code_point = null;\n // 2. If byte is in the range 0x30 to 0x39, inclusive, set\n // code point to the index gb18030 ranges code point for\n // (((gb18030 first − 0x81) × 10 + gb18030 second − 0x30) ×\n // 126 + gb18030 third − 0x81) × 10 + byte − 0x30.\n if (inRange(bite, 0x30, 0x39)) {\n code_point = indexGB18030RangesCodePointFor(\n (((gb18030_first - 0x81) * 10 + gb18030_second - 0x30) * 126 +\n gb18030_third - 0x81) * 10 + bite - 0x30);\n }\n\n // 3. Let buffer be a byte sequence consisting of gb18030\n // second, gb18030 third, and byte, in order.\n var buffer = [gb18030_second, gb18030_third, bite];\n\n // 4. Set gb18030 first, gb18030 second, and gb18030 third to\n // 0x00.\n gb18030_first = 0x00;\n gb18030_second = 0x00;\n gb18030_third = 0x00;\n\n // 5. If code point is null, prepend buffer to stream and\n // return error.\n if (code_point === null) {\n stream.prepend(buffer);\n return decoderError(fatal);\n }\n\n // 6. Return a code point whose value is code point.\n return code_point;\n }\n\n // 4. If gb18030 second is not 0x00, run these substeps:\n if (gb18030_second !== 0x00) {\n\n // 1. If byte is in the range 0x81 to 0xFE, inclusive, set\n // gb18030 third to byte and return continue.\n if (inRange(bite, 0x81, 0xFE)) {\n gb18030_third = bite;\n return null;\n }\n\n // 2. Prepend gb18030 second followed by byte to stream, set\n // gb18030 first and gb18030 second to 0x00, and return error.\n stream.prepend([gb18030_second, bite]);\n gb18030_first = 0x00;\n gb18030_second = 0x00;\n return decoderError(fatal);\n }\n\n // 5. If gb18030 first is not 0x00, run these substeps:\n if (gb18030_first !== 0x00) {\n\n // 1. If byte is in the range 0x30 to 0x39, inclusive, set\n // gb18030 second to byte and return continue.\n if (inRange(bite, 0x30, 0x39)) {\n gb18030_second = bite;\n return null;\n }\n\n // 2. Let lead be gb18030 first, let pointer be null, and set\n // gb18030 first to 0x00.\n var lead = gb18030_first;\n var pointer = null;\n gb18030_first = 0x00;\n\n // 3. Let offset be 0x40 if byte is less than 0x7F and 0x41\n // otherwise.\n var offset = bite < 0x7F ? 0x40 : 0x41;\n\n // 4. If byte is in the range 0x40 to 0x7E, inclusive, or 0x80\n // to 0xFE, inclusive, set pointer to (lead − 0x81) × 190 +\n // (byte − offset).\n if (inRange(bite, 0x40, 0x7E) || inRange(bite, 0x80, 0xFE))\n pointer = (lead - 0x81) * 190 + (bite - offset);\n\n // 5. Let code point be null if pointer is null and the index\n // code point for pointer in index gb18030 otherwise.\n code_point = pointer === null ? null :\n indexCodePointFor(pointer, index('gb18030'));\n\n // 6. If code point is null and byte is an ASCII byte, prepend\n // byte to stream.\n if (code_point === null && isASCIIByte(bite))\n stream.prepend(bite);\n\n // 7. If code point is null, return error.\n if (code_point === null)\n return decoderError(fatal);\n\n // 8. Return a code point whose value is code point.\n return code_point;\n }\n\n // 6. If byte is an ASCII byte, return a code point whose value\n // is byte.\n if (isASCIIByte(bite))\n return bite;\n\n // 7. If byte is 0x80, return code point U+20AC.\n if (bite === 0x80)\n return 0x20AC;\n\n // 8. If byte is in the range 0x81 to 0xFE, inclusive, set\n // gb18030 first to byte and return continue.\n if (inRange(bite, 0x81, 0xFE)) {\n gb18030_first = bite;\n return null;\n }\n\n // 9. Return error.\n return decoderError(fatal);\n };\n }\n\n // 11.2.2 gb18030 encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n * @param {boolean=} gbk_flag\n */\n function GB18030Encoder(options, gbk_flag) {\n var fatal = options.fatal;\n // gb18030's decoder has an associated gbk flag (initially unset).\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point, return a byte whose\n // value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 3. If code point is U+E5E5, return error with code point.\n if (code_point === 0xE5E5)\n return encoderError(code_point);\n\n // 4. If the gbk flag is set and code point is U+20AC, return\n // byte 0x80.\n if (gbk_flag && code_point === 0x20AC)\n return 0x80;\n\n // 5. Let pointer be the index pointer for code point in index\n // gb18030.\n var pointer = indexPointerFor(code_point, index('gb18030'));\n\n // 6. If pointer is not null, run these substeps:\n if (pointer !== null) {\n\n // 1. Let lead be floor(pointer / 190) + 0x81.\n var lead = floor(pointer / 190) + 0x81;\n\n // 2. Let trail be pointer % 190.\n var trail = pointer % 190;\n\n // 3. Let offset be 0x40 if trail is less than 0x3F and 0x41 otherwise.\n var offset = trail < 0x3F ? 0x40 : 0x41;\n\n // 4. Return two bytes whose values are lead and trail + offset.\n return [lead, trail + offset];\n }\n\n // 7. If gbk flag is set, return error with code point.\n if (gbk_flag)\n return encoderError(code_point);\n\n // 8. Set pointer to the index gb18030 ranges pointer for code\n // point.\n pointer = indexGB18030RangesPointerFor(code_point);\n\n // 9. Let byte1 be floor(pointer / 10 / 126 / 10).\n var byte1 = floor(pointer / 10 / 126 / 10);\n\n // 10. Set pointer to pointer − byte1 × 10 × 126 × 10.\n pointer = pointer - byte1 * 10 * 126 * 10;\n\n // 11. Let byte2 be floor(pointer / 10 / 126).\n var byte2 = floor(pointer / 10 / 126);\n\n // 12. Set pointer to pointer − byte2 × 10 × 126.\n pointer = pointer - byte2 * 10 * 126;\n\n // 13. Let byte3 be floor(pointer / 10).\n var byte3 = floor(pointer / 10);\n\n // 14. Let byte4 be pointer − byte3 × 10.\n var byte4 = pointer - byte3 * 10;\n\n // 15. Return four bytes whose values are byte1 + 0x81, byte2 +\n // 0x30, byte3 + 0x81, byte4 + 0x30.\n return [byte1 + 0x81,\n byte2 + 0x30,\n byte3 + 0x81,\n byte4 + 0x30];\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['gb18030'] = function(options) {\n return new GB18030Encoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['gb18030'] = function(options) {\n return new GB18030Decoder(options);\n };\n\n\n //\n // 12. Legacy multi-byte Chinese (traditional) encodings\n //\n\n // 12.1 Big5\n\n // 12.1.1 Big5 decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function Big5Decoder(options) {\n var fatal = options.fatal;\n // Big5's decoder has an associated Big5 lead (initially 0x00).\n var /** @type {number} */ Big5_lead = 0x00;\n\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream and Big5 lead is not 0x00, set\n // Big5 lead to 0x00 and return error.\n if (bite === end_of_stream && Big5_lead !== 0x00) {\n Big5_lead = 0x00;\n return decoderError(fatal);\n }\n\n // 2. If byte is end-of-stream and Big5 lead is 0x00, return\n // finished.\n if (bite === end_of_stream && Big5_lead === 0x00)\n return finished;\n\n // 3. If Big5 lead is not 0x00, let lead be Big5 lead, let\n // pointer be null, set Big5 lead to 0x00, and then run these\n // substeps:\n if (Big5_lead !== 0x00) {\n var lead = Big5_lead;\n var pointer = null;\n Big5_lead = 0x00;\n\n // 1. Let offset be 0x40 if byte is less than 0x7F and 0x62\n // otherwise.\n var offset = bite < 0x7F ? 0x40 : 0x62;\n\n // 2. If byte is in the range 0x40 to 0x7E, inclusive, or 0xA1\n // to 0xFE, inclusive, set pointer to (lead − 0x81) × 157 +\n // (byte − offset).\n if (inRange(bite, 0x40, 0x7E) || inRange(bite, 0xA1, 0xFE))\n pointer = (lead - 0x81) * 157 + (bite - offset);\n\n // 3. If there is a row in the table below whose first column\n // is pointer, return the two code points listed in its second\n // column\n // Pointer | Code points\n // --------+--------------\n // 1133 | U+00CA U+0304\n // 1135 | U+00CA U+030C\n // 1164 | U+00EA U+0304\n // 1166 | U+00EA U+030C\n switch (pointer) {\n case 1133: return [0x00CA, 0x0304];\n case 1135: return [0x00CA, 0x030C];\n case 1164: return [0x00EA, 0x0304];\n case 1166: return [0x00EA, 0x030C];\n }\n\n // 4. Let code point be null if pointer is null and the index\n // code point for pointer in index Big5 otherwise.\n var code_point = (pointer === null) ? null :\n indexCodePointFor(pointer, index('big5'));\n\n // 5. If code point is null and byte is an ASCII byte, prepend\n // byte to stream.\n if (code_point === null && isASCIIByte(bite))\n stream.prepend(bite);\n\n // 6. If code point is null, return error.\n if (code_point === null)\n return decoderError(fatal);\n\n // 7. Return a code point whose value is code point.\n return code_point;\n }\n\n // 4. If byte is an ASCII byte, return a code point whose value\n // is byte.\n if (isASCIIByte(bite))\n return bite;\n\n // 5. If byte is in the range 0x81 to 0xFE, inclusive, set Big5\n // lead to byte and return continue.\n if (inRange(bite, 0x81, 0xFE)) {\n Big5_lead = bite;\n return null;\n }\n\n // 6. Return error.\n return decoderError(fatal);\n };\n }\n\n // 12.1.2 Big5 encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n */\n function Big5Encoder(options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point, return a byte whose\n // value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 3. Let pointer be the index Big5 pointer for code point.\n var pointer = indexBig5PointerFor(code_point);\n\n // 4. If pointer is null, return error with code point.\n if (pointer === null)\n return encoderError(code_point);\n\n // 5. Let lead be floor(pointer / 157) + 0x81.\n var lead = floor(pointer / 157) + 0x81;\n\n // 6. If lead is less than 0xA1, return error with code point.\n if (lead < 0xA1)\n return encoderError(code_point);\n\n // 7. Let trail be pointer % 157.\n var trail = pointer % 157;\n\n // 8. Let offset be 0x40 if trail is less than 0x3F and 0x62\n // otherwise.\n var offset = trail < 0x3F ? 0x40 : 0x62;\n\n // Return two bytes whose values are lead and trail + offset.\n return [lead, trail + offset];\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['Big5'] = function(options) {\n return new Big5Encoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['Big5'] = function(options) {\n return new Big5Decoder(options);\n };\n\n\n //\n // 13. Legacy multi-byte Japanese encodings\n //\n\n // 13.1 euc-jp\n\n // 13.1.1 euc-jp decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function EUCJPDecoder(options) {\n var fatal = options.fatal;\n\n // euc-jp's decoder has an associated euc-jp jis0212 flag\n // (initially unset) and euc-jp lead (initially 0x00).\n var /** @type {boolean} */ eucjp_jis0212_flag = false,\n /** @type {number} */ eucjp_lead = 0x00;\n\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream and euc-jp lead is not 0x00, set\n // euc-jp lead to 0x00, and return error.\n if (bite === end_of_stream && eucjp_lead !== 0x00) {\n eucjp_lead = 0x00;\n return decoderError(fatal);\n }\n\n // 2. If byte is end-of-stream and euc-jp lead is 0x00, return\n // finished.\n if (bite === end_of_stream && eucjp_lead === 0x00)\n return finished;\n\n // 3. If euc-jp lead is 0x8E and byte is in the range 0xA1 to\n // 0xDF, inclusive, set euc-jp lead to 0x00 and return a code\n // point whose value is 0xFF61 − 0xA1 + byte.\n if (eucjp_lead === 0x8E && inRange(bite, 0xA1, 0xDF)) {\n eucjp_lead = 0x00;\n return 0xFF61 - 0xA1 + bite;\n }\n\n // 4. If euc-jp lead is 0x8F and byte is in the range 0xA1 to\n // 0xFE, inclusive, set the euc-jp jis0212 flag, set euc-jp lead\n // to byte, and return continue.\n if (eucjp_lead === 0x8F && inRange(bite, 0xA1, 0xFE)) {\n eucjp_jis0212_flag = true;\n eucjp_lead = bite;\n return null;\n }\n\n // 5. If euc-jp lead is not 0x00, let lead be euc-jp lead, set\n // euc-jp lead to 0x00, and run these substeps:\n if (eucjp_lead !== 0x00) {\n var lead = eucjp_lead;\n eucjp_lead = 0x00;\n\n // 1. Let code point be null.\n var code_point = null;\n\n // 2. If lead and byte are both in the range 0xA1 to 0xFE,\n // inclusive, set code point to the index code point for (lead\n // − 0xA1) × 94 + byte − 0xA1 in index jis0208 if the euc-jp\n // jis0212 flag is unset and in index jis0212 otherwise.\n if (inRange(lead, 0xA1, 0xFE) && inRange(bite, 0xA1, 0xFE)) {\n code_point = indexCodePointFor(\n (lead - 0xA1) * 94 + (bite - 0xA1),\n index(!eucjp_jis0212_flag ? 'jis0208' : 'jis0212'));\n }\n\n // 3. Unset the euc-jp jis0212 flag.\n eucjp_jis0212_flag = false;\n\n // 4. If byte is not in the range 0xA1 to 0xFE, inclusive,\n // prepend byte to stream.\n if (!inRange(bite, 0xA1, 0xFE))\n stream.prepend(bite);\n\n // 5. If code point is null, return error.\n if (code_point === null)\n return decoderError(fatal);\n\n // 6. Return a code point whose value is code point.\n return code_point;\n }\n\n // 6. If byte is an ASCII byte, return a code point whose value\n // is byte.\n if (isASCIIByte(bite))\n return bite;\n\n // 7. If byte is 0x8E, 0x8F, or in the range 0xA1 to 0xFE,\n // inclusive, set euc-jp lead to byte and return continue.\n if (bite === 0x8E || bite === 0x8F || inRange(bite, 0xA1, 0xFE)) {\n eucjp_lead = bite;\n return null;\n }\n\n // 8. Return error.\n return decoderError(fatal);\n };\n }\n\n // 13.1.2 euc-jp encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n */\n function EUCJPEncoder(options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point, return a byte whose\n // value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 3. If code point is U+00A5, return byte 0x5C.\n if (code_point === 0x00A5)\n return 0x5C;\n\n // 4. If code point is U+203E, return byte 0x7E.\n if (code_point === 0x203E)\n return 0x7E;\n\n // 5. If code point is in the range U+FF61 to U+FF9F, inclusive,\n // return two bytes whose values are 0x8E and code point −\n // 0xFF61 + 0xA1.\n if (inRange(code_point, 0xFF61, 0xFF9F))\n return [0x8E, code_point - 0xFF61 + 0xA1];\n\n // 6. If code point is U+2212, set it to U+FF0D.\n if (code_point === 0x2212)\n code_point = 0xFF0D;\n\n // 7. Let pointer be the index pointer for code point in index\n // jis0208.\n var pointer = indexPointerFor(code_point, index('jis0208'));\n\n // 8. If pointer is null, return error with code point.\n if (pointer === null)\n return encoderError(code_point);\n\n // 9. Let lead be floor(pointer / 94) + 0xA1.\n var lead = floor(pointer / 94) + 0xA1;\n\n // 10. Let trail be pointer % 94 + 0xA1.\n var trail = pointer % 94 + 0xA1;\n\n // 11. Return two bytes whose values are lead and trail.\n return [lead, trail];\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['EUC-JP'] = function(options) {\n return new EUCJPEncoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['EUC-JP'] = function(options) {\n return new EUCJPDecoder(options);\n };\n\n // 13.2 iso-2022-jp\n\n // 13.2.1 iso-2022-jp decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function ISO2022JPDecoder(options) {\n var fatal = options.fatal;\n /** @enum */\n var states = {\n ASCII: 0,\n Roman: 1,\n Katakana: 2,\n LeadByte: 3,\n TrailByte: 4,\n EscapeStart: 5,\n Escape: 6\n };\n // iso-2022-jp's decoder has an associated iso-2022-jp decoder\n // state (initially ASCII), iso-2022-jp decoder output state\n // (initially ASCII), iso-2022-jp lead (initially 0x00), and\n // iso-2022-jp output flag (initially unset).\n var /** @type {number} */ iso2022jp_decoder_state = states.ASCII,\n /** @type {number} */ iso2022jp_decoder_output_state = states.ASCII,\n /** @type {number} */ iso2022jp_lead = 0x00,\n /** @type {boolean} */ iso2022jp_output_flag = false;\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // switching on iso-2022-jp decoder state:\n switch (iso2022jp_decoder_state) {\n default:\n case states.ASCII:\n // ASCII\n // Based on byte:\n\n // 0x1B\n if (bite === 0x1B) {\n // Set iso-2022-jp decoder state to escape start and return\n // continue.\n iso2022jp_decoder_state = states.EscapeStart;\n return null;\n }\n\n // 0x00 to 0x7F, excluding 0x0E, 0x0F, and 0x1B\n if (inRange(bite, 0x00, 0x7F) && bite !== 0x0E\n && bite !== 0x0F && bite !== 0x1B) {\n // Unset the iso-2022-jp output flag and return a code point\n // whose value is byte.\n iso2022jp_output_flag = false;\n return bite;\n }\n\n // end-of-stream\n if (bite === end_of_stream) {\n // Return finished.\n return finished;\n }\n\n // Otherwise\n // Unset the iso-2022-jp output flag and return error.\n iso2022jp_output_flag = false;\n return decoderError(fatal);\n\n case states.Roman:\n // Roman\n // Based on byte:\n\n // 0x1B\n if (bite === 0x1B) {\n // Set iso-2022-jp decoder state to escape start and return\n // continue.\n iso2022jp_decoder_state = states.EscapeStart;\n return null;\n }\n\n // 0x5C\n if (bite === 0x5C) {\n // Unset the iso-2022-jp output flag and return code point\n // U+00A5.\n iso2022jp_output_flag = false;\n return 0x00A5;\n }\n\n // 0x7E\n if (bite === 0x7E) {\n // Unset the iso-2022-jp output flag and return code point\n // U+203E.\n iso2022jp_output_flag = false;\n return 0x203E;\n }\n\n // 0x00 to 0x7F, excluding 0x0E, 0x0F, 0x1B, 0x5C, and 0x7E\n if (inRange(bite, 0x00, 0x7F) && bite !== 0x0E && bite !== 0x0F\n && bite !== 0x1B && bite !== 0x5C && bite !== 0x7E) {\n // Unset the iso-2022-jp output flag and return a code point\n // whose value is byte.\n iso2022jp_output_flag = false;\n return bite;\n }\n\n // end-of-stream\n if (bite === end_of_stream) {\n // Return finished.\n return finished;\n }\n\n // Otherwise\n // Unset the iso-2022-jp output flag and return error.\n iso2022jp_output_flag = false;\n return decoderError(fatal);\n\n case states.Katakana:\n // Katakana\n // Based on byte:\n\n // 0x1B\n if (bite === 0x1B) {\n // Set iso-2022-jp decoder state to escape start and return\n // continue.\n iso2022jp_decoder_state = states.EscapeStart;\n return null;\n }\n\n // 0x21 to 0x5F\n if (inRange(bite, 0x21, 0x5F)) {\n // Unset the iso-2022-jp output flag and return a code point\n // whose value is 0xFF61 − 0x21 + byte.\n iso2022jp_output_flag = false;\n return 0xFF61 - 0x21 + bite;\n }\n\n // end-of-stream\n if (bite === end_of_stream) {\n // Return finished.\n return finished;\n }\n\n // Otherwise\n // Unset the iso-2022-jp output flag and return error.\n iso2022jp_output_flag = false;\n return decoderError(fatal);\n\n case states.LeadByte:\n // Lead byte\n // Based on byte:\n\n // 0x1B\n if (bite === 0x1B) {\n // Set iso-2022-jp decoder state to escape start and return\n // continue.\n iso2022jp_decoder_state = states.EscapeStart;\n return null;\n }\n\n // 0x21 to 0x7E\n if (inRange(bite, 0x21, 0x7E)) {\n // Unset the iso-2022-jp output flag, set iso-2022-jp lead\n // to byte, iso-2022-jp decoder state to trail byte, and\n // return continue.\n iso2022jp_output_flag = false;\n iso2022jp_lead = bite;\n iso2022jp_decoder_state = states.TrailByte;\n return null;\n }\n\n // end-of-stream\n if (bite === end_of_stream) {\n // Return finished.\n return finished;\n }\n\n // Otherwise\n // Unset the iso-2022-jp output flag and return error.\n iso2022jp_output_flag = false;\n return decoderError(fatal);\n\n case states.TrailByte:\n // Trail byte\n // Based on byte:\n\n // 0x1B\n if (bite === 0x1B) {\n // Set iso-2022-jp decoder state to escape start and return\n // continue.\n iso2022jp_decoder_state = states.EscapeStart;\n return decoderError(fatal);\n }\n\n // 0x21 to 0x7E\n if (inRange(bite, 0x21, 0x7E)) {\n // 1. Set the iso-2022-jp decoder state to lead byte.\n iso2022jp_decoder_state = states.LeadByte;\n\n // 2. Let pointer be (iso-2022-jp lead − 0x21) × 94 + byte − 0x21.\n var pointer = (iso2022jp_lead - 0x21) * 94 + bite - 0x21;\n\n // 3. Let code point be the index code point for pointer in\n // index jis0208.\n var code_point = indexCodePointFor(pointer, index('jis0208'));\n\n // 4. If code point is null, return error.\n if (code_point === null)\n return decoderError(fatal);\n\n // 5. Return a code point whose value is code point.\n return code_point;\n }\n\n // end-of-stream\n if (bite === end_of_stream) {\n // Set the iso-2022-jp decoder state to lead byte, prepend\n // byte to stream, and return error.\n iso2022jp_decoder_state = states.LeadByte;\n stream.prepend(bite);\n return decoderError(fatal);\n }\n\n // Otherwise\n // Set iso-2022-jp decoder state to lead byte and return\n // error.\n iso2022jp_decoder_state = states.LeadByte;\n return decoderError(fatal);\n\n case states.EscapeStart:\n // Escape start\n\n // 1. If byte is either 0x24 or 0x28, set iso-2022-jp lead to\n // byte, iso-2022-jp decoder state to escape, and return\n // continue.\n if (bite === 0x24 || bite === 0x28) {\n iso2022jp_lead = bite;\n iso2022jp_decoder_state = states.Escape;\n return null;\n }\n\n // 2. Prepend byte to stream.\n stream.prepend(bite);\n\n // 3. Unset the iso-2022-jp output flag, set iso-2022-jp\n // decoder state to iso-2022-jp decoder output state, and\n // return error.\n iso2022jp_output_flag = false;\n iso2022jp_decoder_state = iso2022jp_decoder_output_state;\n return decoderError(fatal);\n\n case states.Escape:\n // Escape\n\n // 1. Let lead be iso-2022-jp lead and set iso-2022-jp lead to\n // 0x00.\n var lead = iso2022jp_lead;\n iso2022jp_lead = 0x00;\n\n // 2. Let state be null.\n var state = null;\n\n // 3. If lead is 0x28 and byte is 0x42, set state to ASCII.\n if (lead === 0x28 && bite === 0x42)\n state = states.ASCII;\n\n // 4. If lead is 0x28 and byte is 0x4A, set state to Roman.\n if (lead === 0x28 && bite === 0x4A)\n state = states.Roman;\n\n // 5. If lead is 0x28 and byte is 0x49, set state to Katakana.\n if (lead === 0x28 && bite === 0x49)\n state = states.Katakana;\n\n // 6. If lead is 0x24 and byte is either 0x40 or 0x42, set\n // state to lead byte.\n if (lead === 0x24 && (bite === 0x40 || bite === 0x42))\n state = states.LeadByte;\n\n // 7. If state is non-null, run these substeps:\n if (state !== null) {\n // 1. Set iso-2022-jp decoder state and iso-2022-jp decoder\n // output state to states.\n iso2022jp_decoder_state = iso2022jp_decoder_state = state;\n\n // 2. Let output flag be the iso-2022-jp output flag.\n var output_flag = iso2022jp_output_flag;\n\n // 3. Set the iso-2022-jp output flag.\n iso2022jp_output_flag = true;\n\n // 4. Return continue, if output flag is unset, and error\n // otherwise.\n return !output_flag ? null : decoderError(fatal);\n }\n\n // 8. Prepend lead and byte to stream.\n stream.prepend([lead, bite]);\n\n // 9. Unset the iso-2022-jp output flag, set iso-2022-jp\n // decoder state to iso-2022-jp decoder output state and\n // return error.\n iso2022jp_output_flag = false;\n iso2022jp_decoder_state = iso2022jp_decoder_output_state;\n return decoderError(fatal);\n }\n };\n }\n\n // 13.2.2 iso-2022-jp encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n */\n function ISO2022JPEncoder(options) {\n var fatal = options.fatal;\n // iso-2022-jp's encoder has an associated iso-2022-jp encoder\n // state which is one of ASCII, Roman, and jis0208 (initially\n // ASCII).\n /** @enum */\n var states = {\n ASCII: 0,\n Roman: 1,\n jis0208: 2\n };\n var /** @type {number} */ iso2022jp_state = states.ASCII;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream and iso-2022-jp encoder\n // state is not ASCII, prepend code point to stream, set\n // iso-2022-jp encoder state to ASCII, and return three bytes\n // 0x1B 0x28 0x42.\n if (code_point === end_of_stream &&\n iso2022jp_state !== states.ASCII) {\n stream.prepend(code_point);\n iso2022jp_state = states.ASCII;\n return [0x1B, 0x28, 0x42];\n }\n\n // 2. If code point is end-of-stream and iso-2022-jp encoder\n // state is ASCII, return finished.\n if (code_point === end_of_stream && iso2022jp_state === states.ASCII)\n return finished;\n\n // 3. If ISO-2022-JP encoder state is ASCII or Roman, and code\n // point is U+000E, U+000F, or U+001B, return error with U+FFFD.\n if ((iso2022jp_state === states.ASCII ||\n iso2022jp_state === states.Roman) &&\n (code_point === 0x000E || code_point === 0x000F ||\n code_point === 0x001B)) {\n return encoderError(0xFFFD);\n }\n\n // 4. If iso-2022-jp encoder state is ASCII and code point is an\n // ASCII code point, return a byte whose value is code point.\n if (iso2022jp_state === states.ASCII &&\n isASCIICodePoint(code_point))\n return code_point;\n\n // 5. If iso-2022-jp encoder state is Roman and code point is an\n // ASCII code point, excluding U+005C and U+007E, or is U+00A5\n // or U+203E, run these substeps:\n if (iso2022jp_state === states.Roman &&\n ((isASCIICodePoint(code_point) &&\n code_point !== 0x005C && code_point !== 0x007E) ||\n (code_point == 0x00A5 || code_point == 0x203E))) {\n\n // 1. If code point is an ASCII code point, return a byte\n // whose value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 2. If code point is U+00A5, return byte 0x5C.\n if (code_point === 0x00A5)\n return 0x5C;\n\n // 3. If code point is U+203E, return byte 0x7E.\n if (code_point === 0x203E)\n return 0x7E;\n }\n\n // 6. If code point is an ASCII code point, and iso-2022-jp\n // encoder state is not ASCII, prepend code point to stream, set\n // iso-2022-jp encoder state to ASCII, and return three bytes\n // 0x1B 0x28 0x42.\n if (isASCIICodePoint(code_point) &&\n iso2022jp_state !== states.ASCII) {\n stream.prepend(code_point);\n iso2022jp_state = states.ASCII;\n return [0x1B, 0x28, 0x42];\n }\n\n // 7. If code point is either U+00A5 or U+203E, and iso-2022-jp\n // encoder state is not Roman, prepend code point to stream, set\n // iso-2022-jp encoder state to Roman, and return three bytes\n // 0x1B 0x28 0x4A.\n if ((code_point === 0x00A5 || code_point === 0x203E) &&\n iso2022jp_state !== states.Roman) {\n stream.prepend(code_point);\n iso2022jp_state = states.Roman;\n return [0x1B, 0x28, 0x4A];\n }\n\n // 8. If code point is U+2212, set it to U+FF0D.\n if (code_point === 0x2212)\n code_point = 0xFF0D;\n\n // 9. Let pointer be the index pointer for code point in index\n // jis0208.\n var pointer = indexPointerFor(code_point, index('jis0208'));\n\n // 10. If pointer is null, return error with code point.\n if (pointer === null)\n return encoderError(code_point);\n\n // 11. If iso-2022-jp encoder state is not jis0208, prepend code\n // point to stream, set iso-2022-jp encoder state to jis0208,\n // and return three bytes 0x1B 0x24 0x42.\n if (iso2022jp_state !== states.jis0208) {\n stream.prepend(code_point);\n iso2022jp_state = states.jis0208;\n return [0x1B, 0x24, 0x42];\n }\n\n // 12. Let lead be floor(pointer / 94) + 0x21.\n var lead = floor(pointer / 94) + 0x21;\n\n // 13. Let trail be pointer % 94 + 0x21.\n var trail = pointer % 94 + 0x21;\n\n // 14. Return two bytes whose values are lead and trail.\n return [lead, trail];\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['ISO-2022-JP'] = function(options) {\n return new ISO2022JPEncoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['ISO-2022-JP'] = function(options) {\n return new ISO2022JPDecoder(options);\n };\n\n // 13.3 Shift_JIS\n\n // 13.3.1 Shift_JIS decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function ShiftJISDecoder(options) {\n var fatal = options.fatal;\n // Shift_JIS's decoder has an associated Shift_JIS lead (initially\n // 0x00).\n var /** @type {number} */ Shift_JIS_lead = 0x00;\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream and Shift_JIS lead is not 0x00,\n // set Shift_JIS lead to 0x00 and return error.\n if (bite === end_of_stream && Shift_JIS_lead !== 0x00) {\n Shift_JIS_lead = 0x00;\n return decoderError(fatal);\n }\n\n // 2. If byte is end-of-stream and Shift_JIS lead is 0x00,\n // return finished.\n if (bite === end_of_stream && Shift_JIS_lead === 0x00)\n return finished;\n\n // 3. If Shift_JIS lead is not 0x00, let lead be Shift_JIS lead,\n // let pointer be null, set Shift_JIS lead to 0x00, and then run\n // these substeps:\n if (Shift_JIS_lead !== 0x00) {\n var lead = Shift_JIS_lead;\n var pointer = null;\n Shift_JIS_lead = 0x00;\n\n // 1. Let offset be 0x40, if byte is less than 0x7F, and 0x41\n // otherwise.\n var offset = (bite < 0x7F) ? 0x40 : 0x41;\n\n // 2. Let lead offset be 0x81, if lead is less than 0xA0, and\n // 0xC1 otherwise.\n var lead_offset = (lead < 0xA0) ? 0x81 : 0xC1;\n\n // 3. If byte is in the range 0x40 to 0x7E, inclusive, or 0x80\n // to 0xFC, inclusive, set pointer to (lead − lead offset) ×\n // 188 + byte − offset.\n if (inRange(bite, 0x40, 0x7E) || inRange(bite, 0x80, 0xFC))\n pointer = (lead - lead_offset) * 188 + bite - offset;\n\n // 4. If pointer is in the range 8836 to 10715, inclusive,\n // return a code point whose value is 0xE000 − 8836 + pointer.\n if (inRange(pointer, 8836, 10715))\n return 0xE000 - 8836 + pointer;\n\n // 5. Let code point be null, if pointer is null, and the\n // index code point for pointer in index jis0208 otherwise.\n var code_point = (pointer === null) ? null :\n indexCodePointFor(pointer, index('jis0208'));\n\n // 6. If code point is null and byte is an ASCII byte, prepend\n // byte to stream.\n if (code_point === null && isASCIIByte(bite))\n stream.prepend(bite);\n\n // 7. If code point is null, return error.\n if (code_point === null)\n return decoderError(fatal);\n\n // 8. Return a code point whose value is code point.\n return code_point;\n }\n\n // 4. If byte is an ASCII byte or 0x80, return a code point\n // whose value is byte.\n if (isASCIIByte(bite) || bite === 0x80)\n return bite;\n\n // 5. If byte is in the range 0xA1 to 0xDF, inclusive, return a\n // code point whose value is 0xFF61 − 0xA1 + byte.\n if (inRange(bite, 0xA1, 0xDF))\n return 0xFF61 - 0xA1 + bite;\n\n // 6. If byte is in the range 0x81 to 0x9F, inclusive, or 0xE0\n // to 0xFC, inclusive, set Shift_JIS lead to byte and return\n // continue.\n if (inRange(bite, 0x81, 0x9F) || inRange(bite, 0xE0, 0xFC)) {\n Shift_JIS_lead = bite;\n return null;\n }\n\n // 7. Return error.\n return decoderError(fatal);\n };\n }\n\n // 13.3.2 Shift_JIS encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n */\n function ShiftJISEncoder(options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point or U+0080, return a\n // byte whose value is code point.\n if (isASCIICodePoint(code_point) || code_point === 0x0080)\n return code_point;\n\n // 3. If code point is U+00A5, return byte 0x5C.\n if (code_point === 0x00A5)\n return 0x5C;\n\n // 4. If code point is U+203E, return byte 0x7E.\n if (code_point === 0x203E)\n return 0x7E;\n\n // 5. If code point is in the range U+FF61 to U+FF9F, inclusive,\n // return a byte whose value is code point − 0xFF61 + 0xA1.\n if (inRange(code_point, 0xFF61, 0xFF9F))\n return code_point - 0xFF61 + 0xA1;\n\n // 6. If code point is U+2212, set it to U+FF0D.\n if (code_point === 0x2212)\n code_point = 0xFF0D;\n\n // 7. Let pointer be the index Shift_JIS pointer for code point.\n var pointer = indexShiftJISPointerFor(code_point);\n\n // 8. If pointer is null, return error with code point.\n if (pointer === null)\n return encoderError(code_point);\n\n // 9. Let lead be floor(pointer / 188).\n var lead = floor(pointer / 188);\n\n // 10. Let lead offset be 0x81, if lead is less than 0x1F, and\n // 0xC1 otherwise.\n var lead_offset = (lead < 0x1F) ? 0x81 : 0xC1;\n\n // 11. Let trail be pointer % 188.\n var trail = pointer % 188;\n\n // 12. Let offset be 0x40, if trail is less than 0x3F, and 0x41\n // otherwise.\n var offset = (trail < 0x3F) ? 0x40 : 0x41;\n\n // 13. Return two bytes whose values are lead + lead offset and\n // trail + offset.\n return [lead + lead_offset, trail + offset];\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['Shift_JIS'] = function(options) {\n return new ShiftJISEncoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['Shift_JIS'] = function(options) {\n return new ShiftJISDecoder(options);\n };\n\n //\n // 14. Legacy multi-byte Korean encodings\n //\n\n // 14.1 euc-kr\n\n // 14.1.1 euc-kr decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function EUCKRDecoder(options) {\n var fatal = options.fatal;\n\n // euc-kr's decoder has an associated euc-kr lead (initially 0x00).\n var /** @type {number} */ euckr_lead = 0x00;\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream and euc-kr lead is not 0x00, set\n // euc-kr lead to 0x00 and return error.\n if (bite === end_of_stream && euckr_lead !== 0) {\n euckr_lead = 0x00;\n return decoderError(fatal);\n }\n\n // 2. If byte is end-of-stream and euc-kr lead is 0x00, return\n // finished.\n if (bite === end_of_stream && euckr_lead === 0)\n return finished;\n\n // 3. If euc-kr lead is not 0x00, let lead be euc-kr lead, let\n // pointer be null, set euc-kr lead to 0x00, and then run these\n // substeps:\n if (euckr_lead !== 0x00) {\n var lead = euckr_lead;\n var pointer = null;\n euckr_lead = 0x00;\n\n // 1. If byte is in the range 0x41 to 0xFE, inclusive, set\n // pointer to (lead − 0x81) × 190 + (byte − 0x41).\n if (inRange(bite, 0x41, 0xFE))\n pointer = (lead - 0x81) * 190 + (bite - 0x41);\n\n // 2. Let code point be null, if pointer is null, and the\n // index code point for pointer in index euc-kr otherwise.\n var code_point = (pointer === null)\n ? null : indexCodePointFor(pointer, index('euc-kr'));\n\n // 3. If code point is null and byte is an ASCII byte, prepend\n // byte to stream.\n if (pointer === null && isASCIIByte(bite))\n stream.prepend(bite);\n\n // 4. If code point is null, return error.\n if (code_point === null)\n return decoderError(fatal);\n\n // 5. Return a code point whose value is code point.\n return code_point;\n }\n\n // 4. If byte is an ASCII byte, return a code point whose value\n // is byte.\n if (isASCIIByte(bite))\n return bite;\n\n // 5. If byte is in the range 0x81 to 0xFE, inclusive, set\n // euc-kr lead to byte and return continue.\n if (inRange(bite, 0x81, 0xFE)) {\n euckr_lead = bite;\n return null;\n }\n\n // 6. Return error.\n return decoderError(fatal);\n };\n }\n\n // 14.1.2 euc-kr encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n */\n function EUCKREncoder(options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point, return a byte whose\n // value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 3. Let pointer be the index pointer for code point in index\n // euc-kr.\n var pointer = indexPointerFor(code_point, index('euc-kr'));\n\n // 4. If pointer is null, return error with code point.\n if (pointer === null)\n return encoderError(code_point);\n\n // 5. Let lead be floor(pointer / 190) + 0x81.\n var lead = floor(pointer / 190) + 0x81;\n\n // 6. Let trail be pointer % 190 + 0x41.\n var trail = (pointer % 190) + 0x41;\n\n // 7. Return two bytes whose values are lead and trail.\n return [lead, trail];\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['EUC-KR'] = function(options) {\n return new EUCKREncoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['EUC-KR'] = function(options) {\n return new EUCKRDecoder(options);\n };\n\n\n //\n // 15. Legacy miscellaneous encodings\n //\n\n // 15.1 replacement\n\n // Not needed - API throws RangeError\n\n // 15.2 Common infrastructure for utf-16be and utf-16le\n\n /**\n * @param {number} code_unit\n * @param {boolean} utf16be\n * @return {!Array.<number>} bytes\n */\n function convertCodeUnitToBytes(code_unit, utf16be) {\n // 1. Let byte1 be code unit >> 8.\n var byte1 = code_unit >> 8;\n\n // 2. Let byte2 be code unit & 0x00FF.\n var byte2 = code_unit & 0x00FF;\n\n // 3. Then return the bytes in order:\n // utf-16be flag is set: byte1, then byte2.\n if (utf16be)\n return [byte1, byte2];\n // utf-16be flag is unset: byte2, then byte1.\n return [byte2, byte1];\n }\n\n // 15.2.1 shared utf-16 decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {boolean} utf16_be True if big-endian, false if little-endian.\n * @param {{fatal: boolean}} options\n */\n function UTF16Decoder(utf16_be, options) {\n var fatal = options.fatal;\n var /** @type {?number} */ utf16_lead_byte = null,\n /** @type {?number} */ utf16_lead_surrogate = null;\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream and either utf-16 lead byte or\n // utf-16 lead surrogate is not null, set utf-16 lead byte and\n // utf-16 lead surrogate to null, and return error.\n if (bite === end_of_stream && (utf16_lead_byte !== null ||\n utf16_lead_surrogate !== null)) {\n return decoderError(fatal);\n }\n\n // 2. If byte is end-of-stream and utf-16 lead byte and utf-16\n // lead surrogate are null, return finished.\n if (bite === end_of_stream && utf16_lead_byte === null &&\n utf16_lead_surrogate === null) {\n return finished;\n }\n\n // 3. If utf-16 lead byte is null, set utf-16 lead byte to byte\n // and return continue.\n if (utf16_lead_byte === null) {\n utf16_lead_byte = bite;\n return null;\n }\n\n // 4. Let code unit be the result of:\n var code_unit;\n if (utf16_be) {\n // utf-16be decoder flag is set\n // (utf-16 lead byte << 8) + byte.\n code_unit = (utf16_lead_byte << 8) + bite;\n } else {\n // utf-16be decoder flag is unset\n // (byte << 8) + utf-16 lead byte.\n code_unit = (bite << 8) + utf16_lead_byte;\n }\n // Then set utf-16 lead byte to null.\n utf16_lead_byte = null;\n\n // 5. If utf-16 lead surrogate is not null, let lead surrogate\n // be utf-16 lead surrogate, set utf-16 lead surrogate to null,\n // and then run these substeps:\n if (utf16_lead_surrogate !== null) {\n var lead_surrogate = utf16_lead_surrogate;\n utf16_lead_surrogate = null;\n\n // 1. If code unit is in the range U+DC00 to U+DFFF,\n // inclusive, return a code point whose value is 0x10000 +\n // ((lead surrogate − 0xD800) << 10) + (code unit − 0xDC00).\n if (inRange(code_unit, 0xDC00, 0xDFFF)) {\n return 0x10000 + (lead_surrogate - 0xD800) * 0x400 +\n (code_unit - 0xDC00);\n }\n\n // 2. Prepend the sequence resulting of converting code unit\n // to bytes using utf-16be decoder flag to stream and return\n // error.\n stream.prepend(convertCodeUnitToBytes(code_unit, utf16_be));\n return decoderError(fatal);\n }\n\n // 6. If code unit is in the range U+D800 to U+DBFF, inclusive,\n // set utf-16 lead surrogate to code unit and return continue.\n if (inRange(code_unit, 0xD800, 0xDBFF)) {\n utf16_lead_surrogate = code_unit;\n return null;\n }\n\n // 7. If code unit is in the range U+DC00 to U+DFFF, inclusive,\n // return error.\n if (inRange(code_unit, 0xDC00, 0xDFFF))\n return decoderError(fatal);\n\n // 8. Return code point code unit.\n return code_unit;\n };\n }\n\n // 15.2.2 shared utf-16 encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {boolean} utf16_be True if big-endian, false if little-endian.\n * @param {{fatal: boolean}} options\n */\n function UTF16Encoder(utf16_be, options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1. If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is in the range U+0000 to U+FFFF, inclusive,\n // return the sequence resulting of converting code point to\n // bytes using utf-16be encoder flag.\n if (inRange(code_point, 0x0000, 0xFFFF))\n return convertCodeUnitToBytes(code_point, utf16_be);\n\n // 3. Let lead be ((code point − 0x10000) >> 10) + 0xD800,\n // converted to bytes using utf-16be encoder flag.\n var lead = convertCodeUnitToBytes(\n ((code_point - 0x10000) >> 10) + 0xD800, utf16_be);\n\n // 4. Let trail be ((code point − 0x10000) & 0x3FF) + 0xDC00,\n // converted to bytes using utf-16be encoder flag.\n var trail = convertCodeUnitToBytes(\n ((code_point - 0x10000) & 0x3FF) + 0xDC00, utf16_be);\n\n // 5. Return a byte sequence of lead followed by trail.\n return lead.concat(trail);\n };\n }\n\n // 15.3 utf-16be\n // 15.3.1 utf-16be decoder\n /** @param {{fatal: boolean}} options */\n encoders['UTF-16BE'] = function(options) {\n return new UTF16Encoder(true, options);\n };\n // 15.3.2 utf-16be encoder\n /** @param {{fatal: boolean}} options */\n decoders['UTF-16BE'] = function(options) {\n return new UTF16Decoder(true, options);\n };\n\n // 15.4 utf-16le\n // 15.4.1 utf-16le decoder\n /** @param {{fatal: boolean}} options */\n encoders['UTF-16LE'] = function(options) {\n return new UTF16Encoder(false, options);\n };\n // 15.4.2 utf-16le encoder\n /** @param {{fatal: boolean}} options */\n decoders['UTF-16LE'] = function(options) {\n return new UTF16Decoder(false, options);\n };\n\n // 15.5 x-user-defined\n\n // 15.5.1 x-user-defined decoder\n /**\n * @constructor\n * @implements {Decoder}\n * @param {{fatal: boolean}} options\n */\n function XUserDefinedDecoder(options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream The stream of bytes being decoded.\n * @param {number} bite The next byte read from the stream.\n * @return {?(number|!Array.<number>)} The next code point(s)\n * decoded, or null if not enough data exists in the input\n * stream to decode a complete code point.\n */\n this.handler = function(stream, bite) {\n // 1. If byte is end-of-stream, return finished.\n if (bite === end_of_stream)\n return finished;\n\n // 2. If byte is an ASCII byte, return a code point whose value\n // is byte.\n if (isASCIIByte(bite))\n return bite;\n\n // 3. Return a code point whose value is 0xF780 + byte − 0x80.\n return 0xF780 + bite - 0x80;\n };\n }\n\n // 15.5.2 x-user-defined encoder\n /**\n * @constructor\n * @implements {Encoder}\n * @param {{fatal: boolean}} options\n */\n function XUserDefinedEncoder(options) {\n var fatal = options.fatal;\n /**\n * @param {Stream} stream Input stream.\n * @param {number} code_point Next code point read from the stream.\n * @return {(number|!Array.<number>)} Byte(s) to emit.\n */\n this.handler = function(stream, code_point) {\n // 1.If code point is end-of-stream, return finished.\n if (code_point === end_of_stream)\n return finished;\n\n // 2. If code point is an ASCII code point, return a byte whose\n // value is code point.\n if (isASCIICodePoint(code_point))\n return code_point;\n\n // 3. If code point is in the range U+F780 to U+F7FF, inclusive,\n // return a byte whose value is code point − 0xF780 + 0x80.\n if (inRange(code_point, 0xF780, 0xF7FF))\n return code_point - 0xF780 + 0x80;\n\n // 4. Return error with code point.\n return encoderError(code_point);\n };\n }\n\n /** @param {{fatal: boolean}} options */\n encoders['x-user-defined'] = function(options) {\n return new XUserDefinedEncoder(options);\n };\n /** @param {{fatal: boolean}} options */\n decoders['x-user-defined'] = function(options) {\n return new XUserDefinedDecoder(options);\n };\n\n if (!global['TextEncoder'])\n global['TextEncoder'] = TextEncoder;\n if (!global['TextDecoder'])\n global['TextDecoder'] = TextDecoder;\n\n if (typeof module !== \"undefined\" && module.exports) {\n module.exports = {\n TextEncoder: global['TextEncoder'],\n TextDecoder: global['TextDecoder'],\n EncodingIndexes: global[\"encoding-indexes\"]\n };\n }\n\n// For strict environments where `this` inside the global scope\n// is `undefined`, take a pure object instead\n}(this || {}));\n","/* (ignored) */","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\n/*</replacement>*/\n\nvar isEncoding = Buffer.isEncoding || function (encoding) {\n encoding = '' + encoding;\n switch (encoding && encoding.toLowerCase()) {\n case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':\n return true;\n default:\n return false;\n }\n};\n\nfunction _normalizeEncoding(enc) {\n if (!enc) return 'utf8';\n var retried;\n while (true) {\n switch (enc) {\n case 'utf8':\n case 'utf-8':\n return 'utf8';\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return 'utf16le';\n case 'latin1':\n case 'binary':\n return 'latin1';\n case 'base64':\n case 'ascii':\n case 'hex':\n return enc;\n default:\n if (retried) return; // undefined\n enc = ('' + enc).toLowerCase();\n retried = true;\n }\n }\n};\n\n// Do not cache `Buffer.isEncoding` when checking encoding names as some\n// modules monkey-patch it to support additional encodings\nfunction normalizeEncoding(enc) {\n var nenc = _normalizeEncoding(enc);\n if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);\n return nenc || enc;\n}\n\n// StringDecoder provides an interface for efficiently splitting a series of\n// buffers into a series of JS strings without breaking apart multi-byte\n// characters.\nexports.StringDecoder = StringDecoder;\nfunction StringDecoder(encoding) {\n this.encoding = normalizeEncoding(encoding);\n var nb;\n switch (this.encoding) {\n case 'utf16le':\n this.text = utf16Text;\n this.end = utf16End;\n nb = 4;\n break;\n case 'utf8':\n this.fillLast = utf8FillLast;\n nb = 4;\n break;\n case 'base64':\n this.text = base64Text;\n this.end = base64End;\n nb = 3;\n break;\n default:\n this.write = simpleWrite;\n this.end = simpleEnd;\n return;\n }\n this.lastNeed = 0;\n this.lastTotal = 0;\n this.lastChar = Buffer.allocUnsafe(nb);\n}\n\nStringDecoder.prototype.write = function (buf) {\n if (buf.length === 0) return '';\n var r;\n var i;\n if (this.lastNeed) {\n r = this.fillLast(buf);\n if (r === undefined) return '';\n i = this.lastNeed;\n this.lastNeed = 0;\n } else {\n i = 0;\n }\n if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);\n return r || '';\n};\n\nStringDecoder.prototype.end = utf8End;\n\n// Returns only complete characters in a Buffer\nStringDecoder.prototype.text = utf8Text;\n\n// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer\nStringDecoder.prototype.fillLast = function (buf) {\n if (this.lastNeed <= buf.length) {\n buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);\n return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n }\n buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);\n this.lastNeed -= buf.length;\n};\n\n// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a\n// continuation byte. If an invalid byte is detected, -2 is returned.\nfunction utf8CheckByte(byte) {\n if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;\n return byte >> 6 === 0x02 ? -1 : -2;\n}\n\n// Checks at most 3 bytes at the end of a Buffer in order to detect an\n// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)\n// needed to complete the UTF-8 character (if applicable) are returned.\nfunction utf8CheckIncomplete(self, buf, i) {\n var j = buf.length - 1;\n if (j < i) return 0;\n var nb = utf8CheckByte(buf[j]);\n if (nb >= 0) {\n if (nb > 0) self.lastNeed = nb - 1;\n return nb;\n }\n if (--j < i || nb === -2) return 0;\n nb = utf8CheckByte(buf[j]);\n if (nb >= 0) {\n if (nb > 0) self.lastNeed = nb - 2;\n return nb;\n }\n if (--j < i || nb === -2) return 0;\n nb = utf8CheckByte(buf[j]);\n if (nb >= 0) {\n if (nb > 0) {\n if (nb === 2) nb = 0;else self.lastNeed = nb - 3;\n }\n return nb;\n }\n return 0;\n}\n\n// Validates as many continuation bytes for a multi-byte UTF-8 character as\n// needed or are available. If we see a non-continuation byte where we expect\n// one, we \"replace\" the validated continuation bytes we've seen so far with\n// a single UTF-8 replacement character ('\\ufffd'), to match v8's UTF-8 decoding\n// behavior. The continuation byte check is included three times in the case\n// where all of the continuation bytes for a character exist in the same buffer.\n// It is also done this way as a slight performance increase instead of using a\n// loop.\nfunction utf8CheckExtraBytes(self, buf, p) {\n if ((buf[0] & 0xC0) !== 0x80) {\n self.lastNeed = 0;\n return '\\ufffd';\n }\n if (self.lastNeed > 1 && buf.length > 1) {\n if ((buf[1] & 0xC0) !== 0x80) {\n self.lastNeed = 1;\n return '\\ufffd';\n }\n if (self.lastNeed > 2 && buf.length > 2) {\n if ((buf[2] & 0xC0) !== 0x80) {\n self.lastNeed = 2;\n return '\\ufffd';\n }\n }\n }\n}\n\n// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.\nfunction utf8FillLast(buf) {\n var p = this.lastTotal - this.lastNeed;\n var r = utf8CheckExtraBytes(this, buf, p);\n if (r !== undefined) return r;\n if (this.lastNeed <= buf.length) {\n buf.copy(this.lastChar, p, 0, this.lastNeed);\n return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n }\n buf.copy(this.lastChar, p, 0, buf.length);\n this.lastNeed -= buf.length;\n}\n\n// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a\n// partial character, the character's bytes are buffered until the required\n// number of bytes are available.\nfunction utf8Text(buf, i) {\n var total = utf8CheckIncomplete(this, buf, i);\n if (!this.lastNeed) return buf.toString('utf8', i);\n this.lastTotal = total;\n var end = buf.length - (total - this.lastNeed);\n buf.copy(this.lastChar, 0, end);\n return buf.toString('utf8', i, end);\n}\n\n// For UTF-8, a replacement character is added when ending on a partial\n// character.\nfunction utf8End(buf) {\n var r = buf && buf.length ? this.write(buf) : '';\n if (this.lastNeed) return r + '\\ufffd';\n return r;\n}\n\n// UTF-16LE typically needs two bytes per character, but even if we have an even\n// number of bytes available, we need to check if we end on a leading/high\n// surrogate. In that case, we need to wait for the next two bytes in order to\n// decode the last character properly.\nfunction utf16Text(buf, i) {\n if ((buf.length - i) % 2 === 0) {\n var r = buf.toString('utf16le', i);\n if (r) {\n var c = r.charCodeAt(r.length - 1);\n if (c >= 0xD800 && c <= 0xDBFF) {\n this.lastNeed = 2;\n this.lastTotal = 4;\n this.lastChar[0] = buf[buf.length - 2];\n this.lastChar[1] = buf[buf.length - 1];\n return r.slice(0, -1);\n }\n }\n return r;\n }\n this.lastNeed = 1;\n this.lastTotal = 2;\n this.lastChar[0] = buf[buf.length - 1];\n return buf.toString('utf16le', i, buf.length - 1);\n}\n\n// For UTF-16LE we do not explicitly append special replacement characters if we\n// end on a partial character, we simply let v8 handle that.\nfunction utf16End(buf) {\n var r = buf && buf.length ? this.write(buf) : '';\n if (this.lastNeed) {\n var end = this.lastTotal - this.lastNeed;\n return r + this.lastChar.toString('utf16le', 0, end);\n }\n return r;\n}\n\nfunction base64Text(buf, i) {\n var n = (buf.length - i) % 3;\n if (n === 0) return buf.toString('base64', i);\n this.lastNeed = 3 - n;\n this.lastTotal = 3;\n if (n === 1) {\n this.lastChar[0] = buf[buf.length - 1];\n } else {\n this.lastChar[0] = buf[buf.length - 2];\n this.lastChar[1] = buf[buf.length - 1];\n }\n return buf.toString('base64', i, buf.length - n);\n}\n\nfunction base64End(buf) {\n var r = buf && buf.length ? this.write(buf) : '';\n if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);\n return r;\n}\n\n// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)\nfunction simpleWrite(buf) {\n return buf.toString(this.encoding);\n}\n\nfunction simpleEnd(buf) {\n return buf && buf.length ? this.write(buf) : '';\n}","/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */\n/* eslint-disable node/no-deprecated-api */\nvar buffer = require('buffer')\nvar Buffer = buffer.Buffer\n\n// alternative to using Object.keys for old browsers\nfunction copyProps (src, dst) {\n for (var key in src) {\n dst[key] = src[key]\n }\n}\nif (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {\n module.exports = buffer\n} else {\n // Copy properties from require('buffer')\n copyProps(buffer, exports)\n exports.Buffer = SafeBuffer\n}\n\nfunction SafeBuffer (arg, encodingOrOffset, length) {\n return Buffer(arg, encodingOrOffset, length)\n}\n\nSafeBuffer.prototype = Object.create(Buffer.prototype)\n\n// Copy static methods from Buffer\ncopyProps(Buffer, SafeBuffer)\n\nSafeBuffer.from = function (arg, encodingOrOffset, length) {\n if (typeof arg === 'number') {\n throw new TypeError('Argument must not be a number')\n }\n return Buffer(arg, encodingOrOffset, length)\n}\n\nSafeBuffer.alloc = function (size, fill, encoding) {\n if (typeof size !== 'number') {\n throw new TypeError('Argument must be a number')\n }\n var buf = Buffer(size)\n if (fill !== undefined) {\n if (typeof encoding === 'string') {\n buf.fill(fill, encoding)\n } else {\n buf.fill(fill)\n }\n } else {\n buf.fill(0)\n }\n return buf\n}\n\nSafeBuffer.allocUnsafe = function (size) {\n if (typeof size !== 'number') {\n throw new TypeError('Argument must be a number')\n }\n return Buffer(size)\n}\n\nSafeBuffer.allocUnsafeSlow = function (size) {\n if (typeof size !== 'number') {\n throw new TypeError('Argument must be a number')\n }\n return buffer.SlowBuffer(size)\n}\n",";(function () { // closure for web browsers\n\nif (typeof module === 'object' && module.exports) {\n module.exports = LRUCache\n} else {\n // just set the global for non-node platforms.\n this.LRUCache = LRUCache\n}\n\nfunction hOP (obj, key) {\n return Object.prototype.hasOwnProperty.call(obj, key)\n}\n\nfunction naiveLength () { return 1 }\n\nvar didTypeWarning = false\nfunction typeCheckKey(key) {\n if (!didTypeWarning && typeof key !== 'string' && typeof key !== 'number') {\n didTypeWarning = true\n console.error(new TypeError(\"LRU: key must be a string or number. Almost certainly a bug! \" + typeof key).stack)\n }\n}\n\nfunction LRUCache (options) {\n if (!(this instanceof LRUCache))\n return new LRUCache(options)\n\n if (typeof options === 'number')\n options = { max: options }\n\n if (!options)\n options = {}\n\n this._max = options.max\n // Kind of weird to have a default max of Infinity, but oh well.\n if (!this._max || !(typeof this._max === \"number\") || this._max <= 0 )\n this._max = Infinity\n\n this._lengthCalculator = options.length || naiveLength\n if (typeof this._lengthCalculator !== \"function\")\n this._lengthCalculator = naiveLength\n\n this._allowStale = options.stale || false\n this._maxAge = options.maxAge || null\n this._dispose = options.dispose\n this.reset()\n}\n\n// resize the cache when the max changes.\nObject.defineProperty(LRUCache.prototype, \"max\",\n { set : function (mL) {\n if (!mL || !(typeof mL === \"number\") || mL <= 0 ) mL = Infinity\n this._max = mL\n if (this._length > this._max) trim(this)\n }\n , get : function () { return this._max }\n , enumerable : true\n })\n\n// resize the cache when the lengthCalculator changes.\nObject.defineProperty(LRUCache.prototype, \"lengthCalculator\",\n { set : function (lC) {\n if (typeof lC !== \"function\") {\n this._lengthCalculator = naiveLength\n this._length = this._itemCount\n for (var key in this._cache) {\n this._cache[key].length = 1\n }\n } else {\n this._lengthCalculator = lC\n this._length = 0\n for (var key in this._cache) {\n this._cache[key].length = this._lengthCalculator(this._cache[key].value)\n this._length += this._cache[key].length\n }\n }\n\n if (this._length > this._max) trim(this)\n }\n , get : function () { return this._lengthCalculator }\n , enumerable : true\n })\n\nObject.defineProperty(LRUCache.prototype, \"length\",\n { get : function () { return this._length }\n , enumerable : true\n })\n\n\nObject.defineProperty(LRUCache.prototype, \"itemCount\",\n { get : function () { return this._itemCount }\n , enumerable : true\n })\n\nLRUCache.prototype.forEach = function (fn, thisp) {\n thisp = thisp || this\n var i = 0\n var itemCount = this._itemCount\n\n for (var k = this._mru - 1; k >= 0 && i < itemCount; k--) if (this._lruList[k]) {\n i++\n var hit = this._lruList[k]\n if (isStale(this, hit)) {\n del(this, hit)\n if (!this._allowStale) hit = undefined\n }\n if (hit) {\n fn.call(thisp, hit.value, hit.key, this)\n }\n }\n}\n\nLRUCache.prototype.keys = function () {\n var keys = new Array(this._itemCount)\n var i = 0\n for (var k = this._mru - 1; k >= 0 && i < this._itemCount; k--) if (this._lruList[k]) {\n var hit = this._lruList[k]\n keys[i++] = hit.key\n }\n return keys\n}\n\nLRUCache.prototype.values = function () {\n var values = new Array(this._itemCount)\n var i = 0\n for (var k = this._mru - 1; k >= 0 && i < this._itemCount; k--) if (this._lruList[k]) {\n var hit = this._lruList[k]\n values[i++] = hit.value\n }\n return values\n}\n\nLRUCache.prototype.reset = function () {\n if (this._dispose && this._cache) {\n for (var k in this._cache) {\n this._dispose(k, this._cache[k].value)\n }\n }\n\n this._cache = Object.create(null) // hash of items by key\n this._lruList = Object.create(null) // list of items in order of use recency\n this._mru = 0 // most recently used\n this._lru = 0 // least recently used\n this._length = 0 // number of items in the list\n this._itemCount = 0\n}\n\nLRUCache.prototype.dump = function () {\n var arr = []\n var i = 0\n\n for (var k = this._mru - 1; k >= 0 && i < this._itemCount; k--) if (this._lruList[k]) {\n var hit = this._lruList[k]\n if (!isStale(this, hit)) {\n //Do not store staled hits\n ++i\n arr.push({\n k: hit.key,\n v: hit.value,\n e: hit.now + (hit.maxAge || 0)\n });\n }\n }\n //arr has the most read first\n return arr\n}\n\nLRUCache.prototype.dumpLru = function () {\n return this._lruList\n}\n\nLRUCache.prototype.set = function (key, value, maxAge) {\n maxAge = maxAge || this._maxAge\n typeCheckKey(key)\n\n var now = maxAge ? Date.now() : 0\n var len = this._lengthCalculator(value)\n\n if (hOP(this._cache, key)) {\n if (len > this._max) {\n del(this, this._cache[key])\n return false\n }\n // dispose of the old one before overwriting\n if (this._dispose)\n this._dispose(key, this._cache[key].value)\n\n this._cache[key].now = now\n this._cache[key].maxAge = maxAge\n this._cache[key].value = value\n this._length += (len - this._cache[key].length)\n this._cache[key].length = len\n this.get(key)\n\n if (this._length > this._max)\n trim(this)\n\n return true\n }\n\n var hit = new Entry(key, value, this._mru++, len, now, maxAge)\n\n // oversized objects fall out of cache automatically.\n if (hit.length > this._max) {\n if (this._dispose) this._dispose(key, value)\n return false\n }\n\n this._length += hit.length\n this._lruList[hit.lu] = this._cache[key] = hit\n this._itemCount ++\n\n if (this._length > this._max)\n trim(this)\n\n return true\n}\n\nLRUCache.prototype.has = function (key) {\n typeCheckKey(key)\n if (!hOP(this._cache, key)) return false\n var hit = this._cache[key]\n if (isStale(this, hit)) {\n return false\n }\n return true\n}\n\nLRUCache.prototype.get = function (key) {\n typeCheckKey(key)\n return get(this, key, true)\n}\n\nLRUCache.prototype.peek = function (key) {\n typeCheckKey(key)\n return get(this, key, false)\n}\n\nLRUCache.prototype.pop = function () {\n var hit = this._lruList[this._lru]\n del(this, hit)\n return hit || null\n}\n\nLRUCache.prototype.del = function (key) {\n typeCheckKey(key)\n del(this, this._cache[key])\n}\n\nLRUCache.prototype.load = function (arr) {\n //reset the cache\n this.reset();\n\n var now = Date.now()\n //A previous serialized cache has the most recent items first\n for (var l = arr.length - 1; l >= 0; l-- ) {\n var hit = arr[l]\n typeCheckKey(hit.k)\n var expiresAt = hit.e || 0\n if (expiresAt === 0) {\n //the item was created without expiration in a non aged cache\n this.set(hit.k, hit.v)\n } else {\n var maxAge = expiresAt - now\n //dont add already expired items\n if (maxAge > 0) this.set(hit.k, hit.v, maxAge)\n }\n }\n}\n\nfunction get (self, key, doUse) {\n typeCheckKey(key)\n var hit = self._cache[key]\n if (hit) {\n if (isStale(self, hit)) {\n del(self, hit)\n if (!self._allowStale) hit = undefined\n } else {\n if (doUse) use(self, hit)\n }\n if (hit) hit = hit.value\n }\n return hit\n}\n\nfunction isStale(self, hit) {\n if (!hit || (!hit.maxAge && !self._maxAge)) return false\n var stale = false;\n var diff = Date.now() - hit.now\n if (hit.maxAge) {\n stale = diff > hit.maxAge\n } else {\n stale = self._maxAge && (diff > self._maxAge)\n }\n return stale;\n}\n\nfunction use (self, hit) {\n shiftLU(self, hit)\n hit.lu = self._mru ++\n self._lruList[hit.lu] = hit\n}\n\nfunction trim (self) {\n while (self._lru < self._mru && self._length > self._max)\n del(self, self._lruList[self._lru])\n}\n\nfunction shiftLU (self, hit) {\n delete self._lruList[ hit.lu ]\n while (self._lru < self._mru && !self._lruList[self._lru]) self._lru ++\n}\n\nfunction del (self, hit) {\n if (hit) {\n if (self._dispose) self._dispose(hit.key, hit.value)\n self._length -= hit.length\n self._itemCount --\n delete self._cache[ hit.key ]\n shiftLU(self, hit)\n }\n}\n\n// classy, since V8 prefers predictable objects.\nfunction Entry (key, value, lu, length, now, maxAge) {\n this.key = key\n this.value = value\n this.lu = lu\n this.length = length\n this.now = now\n if (maxAge) this.maxAge = maxAge\n}\n\n})()\n","export default function(defs) {\n defs('EPSG:4326', \"+title=WGS 84 (long/lat) +proj=longlat +ellps=WGS84 +datum=WGS84 +units=degrees\");\n defs('EPSG:4269', \"+title=NAD83 (long/lat) +proj=longlat +a=6378137.0 +b=6356752.31414036 +ellps=GRS80 +datum=NAD83 +units=degrees\");\n defs('EPSG:3857', \"+title=WGS 84 / Pseudo-Mercator +proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs\");\n\n defs.WGS84 = defs['EPSG:4326'];\n defs['EPSG:3785'] = defs['EPSG:3857']; // maintain backward compat, official code is 3857\n defs.GOOGLE = defs['EPSG:3857'];\n defs['EPSG:900913'] = defs['EPSG:3857'];\n defs['EPSG:102113'] = defs['EPSG:3857'];\n}\n","export var PJD_3PARAM = 1;\nexport var PJD_7PARAM = 2;\nexport var PJD_GRIDSHIFT = 3;\nexport var PJD_WGS84 = 4; // WGS84 or equivalent\nexport var PJD_NODATUM = 5; // WGS84 or equivalent\nexport var SRS_WGS84_SEMIMAJOR = 6378137.0; // only used in grid shift transforms\nexport var SRS_WGS84_SEMIMINOR = 6356752.314; // only used in grid shift transforms\nexport var SRS_WGS84_ESQUARED = 0.0066943799901413165; // only used in grid shift transforms\nexport var SEC_TO_RAD = 4.84813681109535993589914102357e-6;\nexport var HALF_PI = Math.PI/2;\n// ellipoid pj_set_ell.c\nexport var SIXTH = 0.1666666666666666667;\n/* 1/6 */\nexport var RA4 = 0.04722222222222222222;\n/* 17/360 */\nexport var RA6 = 0.02215608465608465608;\nexport var EPSLN = 1.0e-10;\n// you'd think you could use Number.EPSILON above but that makes\n// Mollweide get into an infinate loop.\n\nexport var D2R = 0.01745329251994329577;\nexport var R2D = 57.29577951308232088;\nexport var FORTPI = Math.PI/4;\nexport var TWO_PI = Math.PI * 2;\n// SPI is slightly greater than Math.PI, so values that exceed the -180..180\n// degree range by a tiny amount don't get wrapped. This prevents points that\n// have drifted from their original location along the 180th meridian (due to\n// floating point error) from changing their sign.\nexport var SPI = 3.14159265359;\n","var exports = {};\nexport {exports as default};\n\nexports.greenwich = 0.0; //\"0dE\",\nexports.lisbon = -9.131906111111; //\"9d07'54.862\\\"W\",\nexports.paris = 2.337229166667; //\"2d20'14.025\\\"E\",\nexports.bogota = -74.080916666667; //\"74d04'51.3\\\"W\",\nexports.madrid = -3.687938888889; //\"3d41'16.58\\\"W\",\nexports.rome = 12.452333333333; //\"12d27'8.4\\\"E\",\nexports.bern = 7.439583333333; //\"7d26'22.5\\\"E\",\nexports.jakarta = 106.807719444444; //\"106d48'27.79\\\"E\",\nexports.ferro = -17.666666666667; //\"17d40'W\",\nexports.brussels = 4.367975; //\"4d22'4.71\\\"E\",\nexports.stockholm = 18.058277777778; //\"18d3'29.8\\\"E\",\nexports.athens = 23.7163375; //\"23d42'58.815\\\"E\",\nexports.oslo = 10.722916666667; //\"10d43'22.5\\\"E\"\n","export default {\n ft: {to_meter: 0.3048},\n 'us-ft': {to_meter: 1200 / 3937}\n};\n","var ignoredChar = /[\\s_\\-\\/\\(\\)]/g;\nexport default function match(obj, key) {\n if (obj[key]) {\n return obj[key];\n }\n var keys = Object.keys(obj);\n var lkey = key.toLowerCase().replace(ignoredChar, '');\n var i = -1;\n var testkey, processedKey;\n while (++i < keys.length) {\n testkey = keys[i];\n processedKey = testkey.toLowerCase().replace(ignoredChar, '');\n if (processedKey === lkey) {\n return obj[testkey];\n }\n }\n}\n","import {D2R} from './constants/values';\nimport PrimeMeridian from './constants/PrimeMeridian';\nimport units from './constants/units';\nimport match from './match';\n\nexport default function(defData) {\n var self = {};\n var paramObj = defData.split('+').map(function(v) {\n return v.trim();\n }).filter(function(a) {\n return a;\n }).reduce(function(p, a) {\n var split = a.split('=');\n split.push(true);\n p[split[0].toLowerCase()] = split[1];\n return p;\n }, {});\n var paramName, paramVal, paramOutname;\n var params = {\n proj: 'projName',\n datum: 'datumCode',\n rf: function(v) {\n self.rf = parseFloat(v);\n },\n lat_0: function(v) {\n self.lat0 = v * D2R;\n },\n lat_1: function(v) {\n self.lat1 = v * D2R;\n },\n lat_2: function(v) {\n self.lat2 = v * D2R;\n },\n lat_ts: function(v) {\n self.lat_ts = v * D2R;\n },\n lon_0: function(v) {\n self.long0 = v * D2R;\n },\n lon_1: function(v) {\n self.long1 = v * D2R;\n },\n lon_2: function(v) {\n self.long2 = v * D2R;\n },\n alpha: function(v) {\n self.alpha = parseFloat(v) * D2R;\n },\n gamma: function(v) {\n self.rectified_grid_angle = parseFloat(v);\n },\n lonc: function(v) {\n self.longc = v * D2R;\n },\n x_0: function(v) {\n self.x0 = parseFloat(v);\n },\n y_0: function(v) {\n self.y0 = parseFloat(v);\n },\n k_0: function(v) {\n self.k0 = parseFloat(v);\n },\n k: function(v) {\n self.k0 = parseFloat(v);\n },\n a: function(v) {\n self.a = parseFloat(v);\n },\n b: function(v) {\n self.b = parseFloat(v);\n },\n r_a: function() {\n self.R_A = true;\n },\n zone: function(v) {\n self.zone = parseInt(v, 10);\n },\n south: function() {\n self.utmSouth = true;\n },\n towgs84: function(v) {\n self.datum_params = v.split(\",\").map(function(a) {\n return parseFloat(a);\n });\n },\n to_meter: function(v) {\n self.to_meter = parseFloat(v);\n },\n units: function(v) {\n self.units = v;\n var unit = match(units, v);\n if (unit) {\n self.to_meter = unit.to_meter;\n }\n },\n from_greenwich: function(v) {\n self.from_greenwich = v * D2R;\n },\n pm: function(v) {\n var pm = match(PrimeMeridian, v);\n self.from_greenwich = (pm ? pm : parseFloat(v)) * D2R;\n },\n nadgrids: function(v) {\n if (v === '@null') {\n self.datumCode = 'none';\n }\n else {\n self.nadgrids = v;\n }\n },\n axis: function(v) {\n var legalAxis = \"ewnsud\";\n if (v.length === 3 && legalAxis.indexOf(v.substr(0, 1)) !== -1 && legalAxis.indexOf(v.substr(1, 1)) !== -1 && legalAxis.indexOf(v.substr(2, 1)) !== -1) {\n self.axis = v;\n }\n },\n approx: function() {\n self.approx = true;\n }\n };\n for (paramName in paramObj) {\n paramVal = paramObj[paramName];\n if (paramName in params) {\n paramOutname = params[paramName];\n if (typeof paramOutname === 'function') {\n paramOutname(paramVal);\n }\n else {\n self[paramOutname] = paramVal;\n }\n }\n else {\n self[paramName] = paramVal;\n }\n }\n if(typeof self.datumCode === 'string' && self.datumCode !== \"WGS84\"){\n self.datumCode = self.datumCode.toLowerCase();\n }\n return self;\n}\n","export default parseString;\n\nvar NEUTRAL = 1;\nvar KEYWORD = 2;\nvar NUMBER = 3;\nvar QUOTED = 4;\nvar AFTERQUOTE = 5;\nvar ENDED = -1;\nvar whitespace = /\\s/;\nvar latin = /[A-Za-z]/;\nvar keyword = /[A-Za-z84_]/;\nvar endThings = /[,\\]]/;\nvar digets = /[\\d\\.E\\-\\+]/;\n// const ignoredChar = /[\\s_\\-\\/\\(\\)]/g;\nfunction Parser(text) {\n if (typeof text !== 'string') {\n throw new Error('not a string');\n }\n this.text = text.trim();\n this.level = 0;\n this.place = 0;\n this.root = null;\n this.stack = [];\n this.currentObject = null;\n this.state = NEUTRAL;\n}\nParser.prototype.readCharicter = function() {\n var char = this.text[this.place++];\n if (this.state !== QUOTED) {\n while (whitespace.test(char)) {\n if (this.place >= this.text.length) {\n return;\n }\n char = this.text[this.place++];\n }\n }\n switch (this.state) {\n case NEUTRAL:\n return this.neutral(char);\n case KEYWORD:\n return this.keyword(char)\n case QUOTED:\n return this.quoted(char);\n case AFTERQUOTE:\n return this.afterquote(char);\n case NUMBER:\n return this.number(char);\n case ENDED:\n return;\n }\n};\nParser.prototype.afterquote = function(char) {\n if (char === '\"') {\n this.word += '\"';\n this.state = QUOTED;\n return;\n }\n if (endThings.test(char)) {\n this.word = this.word.trim();\n this.afterItem(char);\n return;\n }\n throw new Error('havn\\'t handled \"' +char + '\" in afterquote yet, index ' + this.place);\n};\nParser.prototype.afterItem = function(char) {\n if (char === ',') {\n if (this.word !== null) {\n this.currentObject.push(this.word);\n }\n this.word = null;\n this.state = NEUTRAL;\n return;\n }\n if (char === ']') {\n this.level--;\n if (this.word !== null) {\n this.currentObject.push(this.word);\n this.word = null;\n }\n this.state = NEUTRAL;\n this.currentObject = this.stack.pop();\n if (!this.currentObject) {\n this.state = ENDED;\n }\n\n return;\n }\n};\nParser.prototype.number = function(char) {\n if (digets.test(char)) {\n this.word += char;\n return;\n }\n if (endThings.test(char)) {\n this.word = parseFloat(this.word);\n this.afterItem(char);\n return;\n }\n throw new Error('havn\\'t handled \"' +char + '\" in number yet, index ' + this.place);\n};\nParser.prototype.quoted = function(char) {\n if (char === '\"') {\n this.state = AFTERQUOTE;\n return;\n }\n this.word += char;\n return;\n};\nParser.prototype.keyword = function(char) {\n if (keyword.test(char)) {\n this.word += char;\n return;\n }\n if (char === '[') {\n var newObjects = [];\n newObjects.push(this.word);\n this.level++;\n if (this.root === null) {\n this.root = newObjects;\n } else {\n this.currentObject.push(newObjects);\n }\n this.stack.push(this.currentObject);\n this.currentObject = newObjects;\n this.state = NEUTRAL;\n return;\n }\n if (endThings.test(char)) {\n this.afterItem(char);\n return;\n }\n throw new Error('havn\\'t handled \"' +char + '\" in keyword yet, index ' + this.place);\n};\nParser.prototype.neutral = function(char) {\n if (latin.test(char)) {\n this.word = char;\n this.state = KEYWORD;\n return;\n }\n if (char === '\"') {\n this.word = '';\n this.state = QUOTED;\n return;\n }\n if (digets.test(char)) {\n this.word = char;\n this.state = NUMBER;\n return;\n }\n if (endThings.test(char)) {\n this.afterItem(char);\n return;\n }\n throw new Error('havn\\'t handled \"' +char + '\" in neutral yet, index ' + this.place);\n};\nParser.prototype.output = function() {\n while (this.place < this.text.length) {\n this.readCharicter();\n }\n if (this.state === ENDED) {\n return this.root;\n }\n throw new Error('unable to parse string \"' +this.text + '\". State is ' + this.state);\n};\n\nfunction parseString(txt) {\n var parser = new Parser(txt);\n return parser.output();\n}\n","\n\nfunction mapit(obj, key, value) {\n if (Array.isArray(key)) {\n value.unshift(key);\n key = null;\n }\n var thing = key ? {} : obj;\n\n var out = value.reduce(function(newObj, item) {\n sExpr(item, newObj);\n return newObj\n }, thing);\n if (key) {\n obj[key] = out;\n }\n}\n\nexport function sExpr(v, obj) {\n if (!Array.isArray(v)) {\n obj[v] = true;\n return;\n }\n var key = v.shift();\n if (key === 'PARAMETER') {\n key = v.shift();\n }\n if (v.length === 1) {\n if (Array.isArray(v[0])) {\n obj[key] = {};\n sExpr(v[0], obj[key]);\n return;\n }\n obj[key] = v[0];\n return;\n }\n if (!v.length) {\n obj[key] = true;\n return;\n }\n if (key === 'TOWGS84') {\n obj[key] = v;\n return;\n }\n if (key === 'AXIS') {\n if (!(key in obj)) {\n obj[key] = [];\n }\n obj[key].push(v);\n return;\n }\n if (!Array.isArray(key)) {\n obj[key] = {};\n }\n\n var i;\n switch (key) {\n case 'UNIT':\n case 'PRIMEM':\n case 'VERT_DATUM':\n obj[key] = {\n name: v[0].toLowerCase(),\n convert: v[1]\n };\n if (v.length === 3) {\n sExpr(v[2], obj[key]);\n }\n return;\n case 'SPHEROID':\n case 'ELLIPSOID':\n obj[key] = {\n name: v[0],\n a: v[1],\n rf: v[2]\n };\n if (v.length === 4) {\n sExpr(v[3], obj[key]);\n }\n return;\n case 'PROJECTEDCRS':\n case 'PROJCRS':\n case 'GEOGCS':\n case 'GEOCCS':\n case 'PROJCS':\n case 'LOCAL_CS':\n case 'GEODCRS':\n case 'GEODETICCRS':\n case 'GEODETICDATUM':\n case 'EDATUM':\n case 'ENGINEERINGDATUM':\n case 'VERT_CS':\n case 'VERTCRS':\n case 'VERTICALCRS':\n case 'COMPD_CS':\n case 'COMPOUNDCRS':\n case 'ENGINEERINGCRS':\n case 'ENGCRS':\n case 'FITTED_CS':\n case 'LOCAL_DATUM':\n case 'DATUM':\n v[0] = ['name', v[0]];\n mapit(obj, key, v);\n return;\n default:\n i = -1;\n while (++i < v.length) {\n if (!Array.isArray(v[i])) {\n return sExpr(v, obj[key]);\n }\n }\n return mapit(obj, key, v);\n }\n}\n","var D2R = 0.01745329251994329577;\nimport parser from './parser';\nimport {sExpr} from './process';\n\n\n\nfunction rename(obj, params) {\n var outName = params[0];\n var inName = params[1];\n if (!(outName in obj) && (inName in obj)) {\n obj[outName] = obj[inName];\n if (params.length === 3) {\n obj[outName] = params[2](obj[outName]);\n }\n }\n}\n\nfunction d2r(input) {\n return input * D2R;\n}\n\nfunction cleanWKT(wkt) {\n if (wkt.type === 'GEOGCS') {\n wkt.projName = 'longlat';\n } else if (wkt.type === 'LOCAL_CS') {\n wkt.projName = 'identity';\n wkt.local = true;\n } else {\n if (typeof wkt.PROJECTION === 'object') {\n wkt.projName = Object.keys(wkt.PROJECTION)[0];\n } else {\n wkt.projName = wkt.PROJECTION;\n }\n }\n if (wkt.AXIS) {\n var axisOrder = '';\n for (var i = 0, ii = wkt.AXIS.length; i < ii; ++i) {\n var axis = [wkt.AXIS[i][0].toLowerCase(), wkt.AXIS[i][1].toLowerCase()];\n if (axis[0].indexOf('north') !== -1 || ((axis[0] === 'y' || axis[0] === 'lat') && axis[1] === 'north')) {\n axisOrder += 'n';\n } else if (axis[0].indexOf('south') !== -1 || ((axis[0] === 'y' || axis[0] === 'lat') && axis[1] === 'south')) {\n axisOrder += 's';\n } else if (axis[0].indexOf('east') !== -1 || ((axis[0] === 'x' || axis[0] === 'lon') && axis[1] === 'east')) {\n axisOrder += 'e';\n } else if (axis[0].indexOf('west') !== -1 || ((axis[0] === 'x' || axis[0] === 'lon') && axis[1] === 'west')) {\n axisOrder += 'w';\n }\n }\n if (axisOrder.length === 2) {\n axisOrder += 'u';\n }\n if (axisOrder.length === 3) {\n wkt.axis = axisOrder;\n }\n }\n if (wkt.UNIT) {\n wkt.units = wkt.UNIT.name.toLowerCase();\n if (wkt.units === 'metre') {\n wkt.units = 'meter';\n }\n if (wkt.UNIT.convert) {\n if (wkt.type === 'GEOGCS') {\n if (wkt.DATUM && wkt.DATUM.SPHEROID) {\n wkt.to_meter = wkt.UNIT.convert*wkt.DATUM.SPHEROID.a;\n }\n } else {\n wkt.to_meter = wkt.UNIT.convert;\n }\n }\n }\n var geogcs = wkt.GEOGCS;\n if (wkt.type === 'GEOGCS') {\n geogcs = wkt;\n }\n if (geogcs) {\n //if(wkt.GEOGCS.PRIMEM&&wkt.GEOGCS.PRIMEM.convert){\n // wkt.from_greenwich=wkt.GEOGCS.PRIMEM.convert*D2R;\n //}\n if (geogcs.DATUM) {\n wkt.datumCode = geogcs.DATUM.name.toLowerCase();\n } else {\n wkt.datumCode = geogcs.name.toLowerCase();\n }\n if (wkt.datumCode.slice(0, 2) === 'd_') {\n wkt.datumCode = wkt.datumCode.slice(2);\n }\n if (wkt.datumCode === 'new_zealand_geodetic_datum_1949' || wkt.datumCode === 'new_zealand_1949') {\n wkt.datumCode = 'nzgd49';\n }\n if (wkt.datumCode === 'wgs_1984' || wkt.datumCode === 'world_geodetic_system_1984') {\n if (wkt.PROJECTION === 'Mercator_Auxiliary_Sphere') {\n wkt.sphere = true;\n }\n wkt.datumCode = 'wgs84';\n }\n if (wkt.datumCode.slice(-6) === '_ferro') {\n wkt.datumCode = wkt.datumCode.slice(0, - 6);\n }\n if (wkt.datumCode.slice(-8) === '_jakarta') {\n wkt.datumCode = wkt.datumCode.slice(0, - 8);\n }\n if (~wkt.datumCode.indexOf('belge')) {\n wkt.datumCode = 'rnb72';\n }\n if (geogcs.DATUM && geogcs.DATUM.SPHEROID) {\n wkt.ellps = geogcs.DATUM.SPHEROID.name.replace('_19', '').replace(/[Cc]larke\\_18/, 'clrk');\n if (wkt.ellps.toLowerCase().slice(0, 13) === 'international') {\n wkt.ellps = 'intl';\n }\n\n wkt.a = geogcs.DATUM.SPHEROID.a;\n wkt.rf = parseFloat(geogcs.DATUM.SPHEROID.rf, 10);\n }\n\n if (geogcs.DATUM && geogcs.DATUM.TOWGS84) {\n wkt.datum_params = geogcs.DATUM.TOWGS84;\n }\n if (~wkt.datumCode.indexOf('osgb_1936')) {\n wkt.datumCode = 'osgb36';\n }\n if (~wkt.datumCode.indexOf('osni_1952')) {\n wkt.datumCode = 'osni52';\n }\n if (~wkt.datumCode.indexOf('tm65')\n || ~wkt.datumCode.indexOf('geodetic_datum_of_1965')) {\n wkt.datumCode = 'ire65';\n }\n if (wkt.datumCode === 'ch1903+') {\n wkt.datumCode = 'ch1903';\n }\n if (~wkt.datumCode.indexOf('israel')) {\n wkt.datumCode = 'isr93';\n }\n }\n if (wkt.b && !isFinite(wkt.b)) {\n wkt.b = wkt.a;\n }\n\n function toMeter(input) {\n var ratio = wkt.to_meter || 1;\n return input * ratio;\n }\n var renamer = function(a) {\n return rename(wkt, a);\n };\n var list = [\n ['standard_parallel_1', 'Standard_Parallel_1'],\n ['standard_parallel_1', 'Latitude of 1st standard parallel'],\n ['standard_parallel_2', 'Standard_Parallel_2'],\n ['standard_parallel_2', 'Latitude of 2nd standard parallel'],\n ['false_easting', 'False_Easting'],\n ['false_easting', 'False easting'],\n ['false-easting', 'Easting at false origin'],\n ['false_northing', 'False_Northing'],\n ['false_northing', 'False northing'],\n ['false_northing', 'Northing at false origin'],\n ['central_meridian', 'Central_Meridian'],\n ['central_meridian', 'Longitude of natural origin'],\n ['central_meridian', 'Longitude of false origin'],\n ['latitude_of_origin', 'Latitude_Of_Origin'],\n ['latitude_of_origin', 'Central_Parallel'],\n ['latitude_of_origin', 'Latitude of natural origin'],\n ['latitude_of_origin', 'Latitude of false origin'],\n ['scale_factor', 'Scale_Factor'],\n ['k0', 'scale_factor'],\n ['latitude_of_center', 'Latitude_Of_Center'],\n ['latitude_of_center', 'Latitude_of_center'],\n ['lat0', 'latitude_of_center', d2r],\n ['longitude_of_center', 'Longitude_Of_Center'],\n ['longitude_of_center', 'Longitude_of_center'],\n ['longc', 'longitude_of_center', d2r],\n ['x0', 'false_easting', toMeter],\n ['y0', 'false_northing', toMeter],\n ['long0', 'central_meridian', d2r],\n ['lat0', 'latitude_of_origin', d2r],\n ['lat0', 'standard_parallel_1', d2r],\n ['lat1', 'standard_parallel_1', d2r],\n ['lat2', 'standard_parallel_2', d2r],\n ['azimuth', 'Azimuth'],\n ['alpha', 'azimuth', d2r],\n ['srsCode', 'name']\n ];\n list.forEach(renamer);\n if (!wkt.long0 && wkt.longc && (wkt.projName === 'Albers_Conic_Equal_Area' || wkt.projName === 'Lambert_Azimuthal_Equal_Area')) {\n wkt.long0 = wkt.longc;\n }\n if (!wkt.lat_ts && wkt.lat1 && (wkt.projName === 'Stereographic_South_Pole' || wkt.projName === 'Polar Stereographic (variant B)')) {\n wkt.lat0 = d2r(wkt.lat1 > 0 ? 90 : -90);\n wkt.lat_ts = wkt.lat1;\n }\n}\nexport default function(wkt) {\n var lisp = parser(wkt);\n var type = lisp.shift();\n var name = lisp.shift();\n lisp.unshift(['name', name]);\n lisp.unshift(['type', type]);\n var obj = {};\n sExpr(lisp, obj);\n cleanWKT(obj);\n return obj;\n}\n","import globals from './global';\nimport parseProj from './projString';\nimport wkt from 'wkt-parser';\n\nfunction defs(name) {\n /*global console*/\n var that = this;\n if (arguments.length === 2) {\n var def = arguments[1];\n if (typeof def === 'string') {\n if (def.charAt(0) === '+') {\n defs[name] = parseProj(arguments[1]);\n }\n else {\n defs[name] = wkt(arguments[1]);\n }\n } else {\n defs[name] = def;\n }\n }\n else if (arguments.length === 1) {\n if (Array.isArray(name)) {\n return name.map(function(v) {\n if (Array.isArray(v)) {\n defs.apply(that, v);\n }\n else {\n defs(v);\n }\n });\n }\n else if (typeof name === 'string') {\n if (name in defs) {\n return defs[name];\n }\n }\n else if ('EPSG' in name) {\n defs['EPSG:' + name.EPSG] = name;\n }\n else if ('ESRI' in name) {\n defs['ESRI:' + name.ESRI] = name;\n }\n else if ('IAU2000' in name) {\n defs['IAU2000:' + name.IAU2000] = name;\n }\n else {\n console.log(name);\n }\n return;\n }\n\n\n}\nglobals(defs);\nexport default defs;\n","import defs from './defs';\nimport wkt from 'wkt-parser';\nimport projStr from './projString';\nimport match from './match';\nfunction testObj(code){\n return typeof code === 'string';\n}\nfunction testDef(code){\n return code in defs;\n}\nvar codeWords = ['PROJECTEDCRS', 'PROJCRS', 'GEOGCS','GEOCCS','PROJCS','LOCAL_CS', 'GEODCRS', 'GEODETICCRS', 'GEODETICDATUM', 'ENGCRS', 'ENGINEERINGCRS'];\nfunction testWKT(code){\n return codeWords.some(function (word) {\n return code.indexOf(word) > -1;\n });\n}\nvar codes = ['3857', '900913', '3785', '102113'];\nfunction checkMercator(item) {\n var auth = match(item, 'authority');\n if (!auth) {\n return;\n }\n var code = match(auth, 'epsg');\n return code && codes.indexOf(code) > -1;\n}\nfunction checkProjStr(item) {\n var ext = match(item, 'extension');\n if (!ext) {\n return;\n }\n return match(ext, 'proj4');\n}\nfunction testProj(code){\n return code[0] === '+';\n}\nfunction parse(code){\n if (testObj(code)) {\n //check to see if this is a WKT string\n if (testDef(code)) {\n return defs[code];\n }\n if (testWKT(code)) {\n var out = wkt(code);\n // test of spetial case, due to this being a very common and often malformed\n if (checkMercator(out)) {\n return defs['EPSG:3857'];\n }\n var maybeProjStr = checkProjStr(out);\n if (maybeProjStr) {\n return projStr(maybeProjStr);\n }\n return out;\n }\n if (testProj(code)) {\n return projStr(code);\n }\n }else{\n return code;\n }\n}\n\nexport default parse;\n","export default function(destination, source) {\n destination = destination || {};\n var value, property;\n if (!source) {\n return destination;\n }\n for (property in source) {\n value = source[property];\n if (value !== undefined) {\n destination[property] = value;\n }\n }\n return destination;\n}\n","export default function(eccent, sinphi, cosphi) {\n var con = eccent * sinphi;\n return cosphi / (Math.sqrt(1 - con * con));\n}","export default function(x) {\n return x<0 ? -1 : 1;\n}","\nimport {TWO_PI, SPI} from '../constants/values';\nimport sign from './sign';\n\nexport default function(x) {\n return (Math.abs(x) <= SPI) ? x : (x - (sign(x) * TWO_PI));\n}\n","import {HALF_PI} from '../constants/values';\n\nexport default function(eccent, phi, sinphi) {\n var con = eccent * sinphi;\n var com = 0.5 * eccent;\n con = Math.pow(((1 - con) / (1 + con)), com);\n return (Math.tan(0.5 * (HALF_PI - phi)) / con);\n}\n","import {HALF_PI} from '../constants/values';\n\nexport default function(eccent, ts) {\n var eccnth = 0.5 * eccent;\n var con, dphi;\n var phi = HALF_PI - 2 * Math.atan(ts);\n for (var i = 0; i <= 15; i++) {\n con = eccent * Math.sin(phi);\n dphi = HALF_PI - 2 * Math.atan(ts * (Math.pow(((1 - con) / (1 + con)), eccnth))) - phi;\n phi += dphi;\n if (Math.abs(dphi) <= 0.0000000001) {\n return phi;\n }\n }\n //console.log(\"phi2z has NoConvergence\");\n return -9999;\n}\n","import msfnz from '../common/msfnz';\n\nimport adjust_lon from '../common/adjust_lon';\nimport tsfnz from '../common/tsfnz';\nimport phi2z from '../common/phi2z';\nimport {FORTPI, R2D, EPSLN, HALF_PI} from '../constants/values';\nexport function init() {\n var con = this.b / this.a;\n this.es = 1 - con * con;\n if(!('x0' in this)){\n this.x0 = 0;\n }\n if(!('y0' in this)){\n this.y0 = 0;\n }\n this.e = Math.sqrt(this.es);\n if (this.lat_ts) {\n if (this.sphere) {\n this.k0 = Math.cos(this.lat_ts);\n }\n else {\n this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));\n }\n }\n else {\n if (!this.k0) {\n if (this.k) {\n this.k0 = this.k;\n }\n else {\n this.k0 = 1;\n }\n }\n }\n}\n\n/* Mercator forward equations--mapping lat,long to x,y\n --------------------------------------------------*/\n\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n // convert to radians\n if (lat * R2D > 90 && lat * R2D < -90 && lon * R2D > 180 && lon * R2D < -180) {\n return null;\n }\n\n var x, y;\n if (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN) {\n return null;\n }\n else {\n if (this.sphere) {\n x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);\n y = this.y0 + this.a * this.k0 * Math.log(Math.tan(FORTPI + 0.5 * lat));\n }\n else {\n var sinphi = Math.sin(lat);\n var ts = tsfnz(this.e, lat, sinphi);\n x = this.x0 + this.a * this.k0 * adjust_lon(lon - this.long0);\n y = this.y0 - this.a * this.k0 * Math.log(ts);\n }\n p.x = x;\n p.y = y;\n return p;\n }\n}\n\n/* Mercator inverse equations--mapping x,y to lat/long\n --------------------------------------------------*/\nexport function inverse(p) {\n\n var x = p.x - this.x0;\n var y = p.y - this.y0;\n var lon, lat;\n\n if (this.sphere) {\n lat = HALF_PI - 2 * Math.atan(Math.exp(-y / (this.a * this.k0)));\n }\n else {\n var ts = Math.exp(-y / (this.a * this.k0));\n lat = phi2z(this.e, ts);\n if (lat === -9999) {\n return null;\n }\n }\n lon = adjust_lon(this.long0 + x / (this.a * this.k0));\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"Mercator\", \"Popular Visualisation Pseudo Mercator\", \"Mercator_1SP\", \"Mercator_Auxiliary_Sphere\", \"merc\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","export function init() {\n //no-op for longlat\n}\n\nfunction identity(pt) {\n return pt;\n}\nexport {identity as forward};\nexport {identity as inverse};\nexport var names = [\"longlat\", \"identity\"];\nexport default {\n init: init,\n forward: identity,\n inverse: identity,\n names: names\n};\n","import merc from \"./projections/merc\";\nimport longlat from \"./projections/longlat\";\nvar projs = [merc, longlat];\nvar names = {};\nvar projStore = [];\n\nfunction add(proj, i) {\n var len = projStore.length;\n if (!proj.names) {\n console.log(i);\n return true;\n }\n projStore[len] = proj;\n proj.names.forEach(function(n) {\n names[n.toLowerCase()] = len;\n });\n return this;\n}\n\nexport {add};\n\nexport function get(name) {\n if (!name) {\n return false;\n }\n var n = name.toLowerCase();\n if (typeof names[n] !== 'undefined' && projStore[names[n]]) {\n return projStore[names[n]];\n }\n}\n\nexport function start() {\n projs.forEach(add);\n}\nexport default {\n start: start,\n add: add,\n get: get\n};\n","var exports = {};\nexport {exports as default};\nexports.MERIT = {\n a: 6378137.0,\n rf: 298.257,\n ellipseName: \"MERIT 1983\"\n};\n\nexports.SGS85 = {\n a: 6378136.0,\n rf: 298.257,\n ellipseName: \"Soviet Geodetic System 85\"\n};\n\nexports.GRS80 = {\n a: 6378137.0,\n rf: 298.257222101,\n ellipseName: \"GRS 1980(IUGG, 1980)\"\n};\n\nexports.IAU76 = {\n a: 6378140.0,\n rf: 298.257,\n ellipseName: \"IAU 1976\"\n};\n\nexports.airy = {\n a: 6377563.396,\n b: 6356256.910,\n ellipseName: \"Airy 1830\"\n};\n\nexports.APL4 = {\n a: 6378137,\n rf: 298.25,\n ellipseName: \"Appl. Physics. 1965\"\n};\n\nexports.NWL9D = {\n a: 6378145.0,\n rf: 298.25,\n ellipseName: \"Naval Weapons Lab., 1965\"\n};\n\nexports.mod_airy = {\n a: 6377340.189,\n b: 6356034.446,\n ellipseName: \"Modified Airy\"\n};\n\nexports.andrae = {\n a: 6377104.43,\n rf: 300.0,\n ellipseName: \"Andrae 1876 (Den., Iclnd.)\"\n};\n\nexports.aust_SA = {\n a: 6378160.0,\n rf: 298.25,\n ellipseName: \"Australian Natl & S. Amer. 1969\"\n};\n\nexports.GRS67 = {\n a: 6378160.0,\n rf: 298.2471674270,\n ellipseName: \"GRS 67(IUGG 1967)\"\n};\n\nexports.bessel = {\n a: 6377397.155,\n rf: 299.1528128,\n ellipseName: \"Bessel 1841\"\n};\n\nexports.bess_nam = {\n a: 6377483.865,\n rf: 299.1528128,\n ellipseName: \"Bessel 1841 (Namibia)\"\n};\n\nexports.clrk66 = {\n a: 6378206.4,\n b: 6356583.8,\n ellipseName: \"Clarke 1866\"\n};\n\nexports.clrk80 = {\n a: 6378249.145,\n rf: 293.4663,\n ellipseName: \"Clarke 1880 mod.\"\n};\n\nexports.clrk58 = {\n a: 6378293.645208759,\n rf: 294.2606763692654,\n ellipseName: \"Clarke 1858\"\n};\n\nexports.CPM = {\n a: 6375738.7,\n rf: 334.29,\n ellipseName: \"Comm. des Poids et Mesures 1799\"\n};\n\nexports.delmbr = {\n a: 6376428.0,\n rf: 311.5,\n ellipseName: \"Delambre 1810 (Belgium)\"\n};\n\nexports.engelis = {\n a: 6378136.05,\n rf: 298.2566,\n ellipseName: \"Engelis 1985\"\n};\n\nexports.evrst30 = {\n a: 6377276.345,\n rf: 300.8017,\n ellipseName: \"Everest 1830\"\n};\n\nexports.evrst48 = {\n a: 6377304.063,\n rf: 300.8017,\n ellipseName: \"Everest 1948\"\n};\n\nexports.evrst56 = {\n a: 6377301.243,\n rf: 300.8017,\n ellipseName: \"Everest 1956\"\n};\n\nexports.evrst69 = {\n a: 6377295.664,\n rf: 300.8017,\n ellipseName: \"Everest 1969\"\n};\n\nexports.evrstSS = {\n a: 6377298.556,\n rf: 300.8017,\n ellipseName: \"Everest (Sabah & Sarawak)\"\n};\n\nexports.fschr60 = {\n a: 6378166.0,\n rf: 298.3,\n ellipseName: \"Fischer (Mercury Datum) 1960\"\n};\n\nexports.fschr60m = {\n a: 6378155.0,\n rf: 298.3,\n ellipseName: \"Fischer 1960\"\n};\n\nexports.fschr68 = {\n a: 6378150.0,\n rf: 298.3,\n ellipseName: \"Fischer 1968\"\n};\n\nexports.helmert = {\n a: 6378200.0,\n rf: 298.3,\n ellipseName: \"Helmert 1906\"\n};\n\nexports.hough = {\n a: 6378270.0,\n rf: 297.0,\n ellipseName: \"Hough\"\n};\n\nexports.intl = {\n a: 6378388.0,\n rf: 297.0,\n ellipseName: \"International 1909 (Hayford)\"\n};\n\nexports.kaula = {\n a: 6378163.0,\n rf: 298.24,\n ellipseName: \"Kaula 1961\"\n};\n\nexports.lerch = {\n a: 6378139.0,\n rf: 298.257,\n ellipseName: \"Lerch 1979\"\n};\n\nexports.mprts = {\n a: 6397300.0,\n rf: 191.0,\n ellipseName: \"Maupertius 1738\"\n};\n\nexports.new_intl = {\n a: 6378157.5,\n b: 6356772.2,\n ellipseName: \"New International 1967\"\n};\n\nexports.plessis = {\n a: 6376523.0,\n rf: 6355863.0,\n ellipseName: \"Plessis 1817 (France)\"\n};\n\nexports.krass = {\n a: 6378245.0,\n rf: 298.3,\n ellipseName: \"Krassovsky, 1942\"\n};\n\nexports.SEasia = {\n a: 6378155.0,\n b: 6356773.3205,\n ellipseName: \"Southeast Asia\"\n};\n\nexports.walbeck = {\n a: 6376896.0,\n b: 6355834.8467,\n ellipseName: \"Walbeck\"\n};\n\nexports.WGS60 = {\n a: 6378165.0,\n rf: 298.3,\n ellipseName: \"WGS 60\"\n};\n\nexports.WGS66 = {\n a: 6378145.0,\n rf: 298.25,\n ellipseName: \"WGS 66\"\n};\n\nexports.WGS7 = {\n a: 6378135.0,\n rf: 298.26,\n ellipseName: \"WGS 72\"\n};\n\nexport var WGS84 = exports.WGS84 = {\n a: 6378137.0,\n rf: 298.257223563,\n ellipseName: \"WGS 84\"\n};\n\nexports.sphere = {\n a: 6370997.0,\n b: 6370997.0,\n ellipseName: \"Normal Sphere (r=6370997)\"\n};\n","import {SIXTH, RA4, RA6, EPSLN} from './constants/values';\nimport {default as Ellipsoid, WGS84} from './constants/Ellipsoid';\nimport match from './match';\n\nexport function eccentricity(a, b, rf, R_A) {\n var a2 = a * a; // used in geocentric\n var b2 = b * b; // used in geocentric\n var es = (a2 - b2) / a2; // e ^ 2\n var e = 0;\n if (R_A) {\n a *= 1 - es * (SIXTH + es * (RA4 + es * RA6));\n a2 = a * a;\n es = 0;\n } else {\n e = Math.sqrt(es); // eccentricity\n }\n var ep2 = (a2 - b2) / b2; // used in geocentric\n return {\n es: es,\n e: e,\n ep2: ep2\n };\n}\nexport function sphere(a, b, rf, ellps, sphere) {\n if (!a) { // do we have an ellipsoid?\n var ellipse = match(Ellipsoid, ellps);\n if (!ellipse) {\n ellipse = WGS84;\n }\n a = ellipse.a;\n b = ellipse.b;\n rf = ellipse.rf;\n }\n\n if (rf && !b) {\n b = (1.0 - 1.0 / rf) * a;\n }\n if (rf === 0 || Math.abs(a - b) < EPSLN) {\n sphere = true;\n b = a;\n }\n return {\n a: a,\n b: b,\n rf: rf,\n sphere: sphere\n };\n}\n","var exports = {};\nexport {exports as default};\nexports.wgs84 = {\n towgs84: \"0,0,0\",\n ellipse: \"WGS84\",\n datumName: \"WGS84\"\n};\n\nexports.ch1903 = {\n towgs84: \"674.374,15.056,405.346\",\n ellipse: \"bessel\",\n datumName: \"swiss\"\n};\n\nexports.ggrs87 = {\n towgs84: \"-199.87,74.79,246.62\",\n ellipse: \"GRS80\",\n datumName: \"Greek_Geodetic_Reference_System_1987\"\n};\n\nexports.nad83 = {\n towgs84: \"0,0,0\",\n ellipse: \"GRS80\",\n datumName: \"North_American_Datum_1983\"\n};\n\nexports.nad27 = {\n nadgrids: \"@conus,@alaska,@ntv2_0.gsb,@ntv1_can.dat\",\n ellipse: \"clrk66\",\n datumName: \"North_American_Datum_1927\"\n};\n\nexports.potsdam = {\n towgs84: \"598.1,73.7,418.2,0.202,0.045,-2.455,6.7\",\n ellipse: \"bessel\",\n datumName: \"Potsdam Rauenberg 1950 DHDN\"\n};\n\nexports.carthage = {\n towgs84: \"-263.0,6.0,431.0\",\n ellipse: \"clark80\",\n datumName: \"Carthage 1934 Tunisia\"\n};\n\nexports.hermannskogel = {\n towgs84: \"577.326,90.129,463.919,5.137,1.474,5.297,2.4232\",\n ellipse: \"bessel\",\n datumName: \"Hermannskogel\"\n};\n\nexports.osni52 = {\n towgs84: \"482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15\",\n ellipse: \"airy\",\n datumName: \"Irish National\"\n};\n\nexports.ire65 = {\n towgs84: \"482.530,-130.596,564.557,-1.042,-0.214,-0.631,8.15\",\n ellipse: \"mod_airy\",\n datumName: \"Ireland 1965\"\n};\n\nexports.rassadiran = {\n towgs84: \"-133.63,-157.5,-158.62\",\n ellipse: \"intl\",\n datumName: \"Rassadiran\"\n};\n\nexports.nzgd49 = {\n towgs84: \"59.47,-5.04,187.44,0.47,-0.1,1.024,-4.5993\",\n ellipse: \"intl\",\n datumName: \"New Zealand Geodetic Datum 1949\"\n};\n\nexports.osgb36 = {\n towgs84: \"446.448,-125.157,542.060,0.1502,0.2470,0.8421,-20.4894\",\n ellipse: \"airy\",\n datumName: \"Airy 1830\"\n};\n\nexports.s_jtsk = {\n towgs84: \"589,76,480\",\n ellipse: 'bessel',\n datumName: 'S-JTSK (Ferro)'\n};\n\nexports.beduaram = {\n towgs84: '-106,-87,188',\n ellipse: 'clrk80',\n datumName: 'Beduaram'\n};\n\nexports.gunung_segara = {\n towgs84: '-403,684,41',\n ellipse: 'bessel',\n datumName: 'Gunung Segara Jakarta'\n};\n\nexports.rnb72 = {\n towgs84: \"106.869,-52.2978,103.724,-0.33657,0.456955,-1.84218,1\",\n ellipse: \"intl\",\n datumName: \"Reseau National Belge 1972\"\n};\n","import {PJD_3PARAM, PJD_7PARAM, PJD_GRIDSHIFT, PJD_WGS84, PJD_NODATUM, SEC_TO_RAD} from './constants/values';\n\nfunction datum(datumCode, datum_params, a, b, es, ep2, nadgrids) {\n var out = {};\n\n if (datumCode === undefined || datumCode === 'none') {\n out.datum_type = PJD_NODATUM;\n } else {\n out.datum_type = PJD_WGS84;\n }\n\n if (datum_params) {\n out.datum_params = datum_params.map(parseFloat);\n if (out.datum_params[0] !== 0 || out.datum_params[1] !== 0 || out.datum_params[2] !== 0) {\n out.datum_type = PJD_3PARAM;\n }\n if (out.datum_params.length > 3) {\n if (out.datum_params[3] !== 0 || out.datum_params[4] !== 0 || out.datum_params[5] !== 0 || out.datum_params[6] !== 0) {\n out.datum_type = PJD_7PARAM;\n out.datum_params[3] *= SEC_TO_RAD;\n out.datum_params[4] *= SEC_TO_RAD;\n out.datum_params[5] *= SEC_TO_RAD;\n out.datum_params[6] = (out.datum_params[6] / 1000000.0) + 1.0;\n }\n }\n }\n\n if (nadgrids) {\n out.datum_type = PJD_GRIDSHIFT;\n out.grids = nadgrids;\n }\n out.a = a; //datum object also uses these values\n out.b = b;\n out.es = es;\n out.ep2 = ep2;\n return out;\n}\n\nexport default datum;\n","/**\n * Resources for details of NTv2 file formats:\n * - https://web.archive.org/web/20140127204822if_/http://www.mgs.gov.on.ca:80/stdprodconsume/groups/content/@mgs/@iandit/documents/resourcelist/stel02_047447.pdf\n * - http://mimaka.com/help/gs/html/004_NTV2%20Data%20Format.htm\n */\n\nvar loadedNadgrids = {};\n\n/**\n * Load a binary NTv2 file (.gsb) to a key that can be used in a proj string like +nadgrids=<key>. Pass the NTv2 file\n * as an ArrayBuffer.\n */\nexport default function nadgrid(key, data) {\n var view = new DataView(data);\n var isLittleEndian = detectLittleEndian(view);\n var header = readHeader(view, isLittleEndian);\n if (header.nSubgrids > 1) {\n console.log('Only single NTv2 subgrids are currently supported, subsequent sub grids are ignored');\n }\n var subgrids = readSubgrids(view, header, isLittleEndian);\n var nadgrid = {header: header, subgrids: subgrids};\n loadedNadgrids[key] = nadgrid;\n return nadgrid;\n}\n\n/**\n * Given a proj4 value for nadgrids, return an array of loaded grids\n */\nexport function getNadgrids(nadgrids) {\n // Format details: http://proj.maptools.org/gen_parms.html\n if (nadgrids === undefined) { return null; }\n var grids = nadgrids.split(',');\n return grids.map(parseNadgridString);\n}\n\nfunction parseNadgridString(value) {\n if (value.length === 0) {\n return null;\n }\n var optional = value[0] === '@';\n if (optional) {\n value = value.slice(1);\n }\n if (value === 'null') {\n return {name: 'null', mandatory: !optional, grid: null, isNull: true};\n }\n return {\n name: value,\n mandatory: !optional,\n grid: loadedNadgrids[value] || null,\n isNull: false\n };\n}\n\nfunction secondsToRadians(seconds) {\n return (seconds / 3600) * Math.PI / 180;\n}\n\nfunction detectLittleEndian(view) {\n var nFields = view.getInt32(8, false);\n if (nFields === 11) {\n return false;\n }\n nFields = view.getInt32(8, true);\n if (nFields !== 11) {\n console.warn('Failed to detect nadgrid endian-ness, defaulting to little-endian');\n }\n return true;\n}\n\nfunction readHeader(view, isLittleEndian) {\n return {\n nFields: view.getInt32(8, isLittleEndian),\n nSubgridFields: view.getInt32(24, isLittleEndian),\n nSubgrids: view.getInt32(40, isLittleEndian),\n shiftType: decodeString(view, 56, 56 + 8).trim(),\n fromSemiMajorAxis: view.getFloat64(120, isLittleEndian),\n fromSemiMinorAxis: view.getFloat64(136, isLittleEndian),\n toSemiMajorAxis: view.getFloat64(152, isLittleEndian),\n toSemiMinorAxis: view.getFloat64(168, isLittleEndian),\n };\n}\n\nfunction decodeString(view, start, end) {\n return String.fromCharCode.apply(null, new Uint8Array(view.buffer.slice(start, end)));\n}\n\nfunction readSubgrids(view, header, isLittleEndian) {\n var gridOffset = 176;\n var grids = [];\n for (var i = 0; i < header.nSubgrids; i++) {\n var subHeader = readGridHeader(view, gridOffset, isLittleEndian);\n var nodes = readGridNodes(view, gridOffset, subHeader, isLittleEndian);\n var lngColumnCount = Math.round(\n 1 + (subHeader.upperLongitude - subHeader.lowerLongitude) / subHeader.longitudeInterval);\n var latColumnCount = Math.round(\n 1 + (subHeader.upperLatitude - subHeader.lowerLatitude) / subHeader.latitudeInterval);\n // Proj4 operates on radians whereas the coordinates are in seconds in the grid\n grids.push({\n ll: [secondsToRadians(subHeader.lowerLongitude), secondsToRadians(subHeader.lowerLatitude)],\n del: [secondsToRadians(subHeader.longitudeInterval), secondsToRadians(subHeader.latitudeInterval)],\n lim: [lngColumnCount, latColumnCount],\n count: subHeader.gridNodeCount,\n cvs: mapNodes(nodes)\n });\n }\n return grids;\n}\n\nfunction mapNodes(nodes) {\n return nodes.map(function (r) {return [secondsToRadians(r.longitudeShift), secondsToRadians(r.latitudeShift)];});\n}\n\nfunction readGridHeader(view, offset, isLittleEndian) {\n return {\n name: decodeString(view, offset + 8, offset + 16).trim(),\n parent: decodeString(view, offset + 24, offset + 24 + 8).trim(),\n lowerLatitude: view.getFloat64(offset + 72, isLittleEndian),\n upperLatitude: view.getFloat64(offset + 88, isLittleEndian),\n lowerLongitude: view.getFloat64(offset + 104, isLittleEndian),\n upperLongitude: view.getFloat64(offset + 120, isLittleEndian),\n latitudeInterval: view.getFloat64(offset + 136, isLittleEndian),\n longitudeInterval: view.getFloat64(offset + 152, isLittleEndian),\n gridNodeCount: view.getInt32(offset + 168, isLittleEndian)\n };\n}\n\nfunction readGridNodes(view, offset, gridHeader, isLittleEndian) {\n var nodesOffset = offset + 176;\n var gridRecordLength = 16;\n var gridShiftRecords = [];\n for (var i = 0; i < gridHeader.gridNodeCount; i++) {\n var record = {\n latitudeShift: view.getFloat32(nodesOffset + i * gridRecordLength, isLittleEndian),\n longitudeShift: view.getFloat32(nodesOffset + i * gridRecordLength + 4, isLittleEndian),\n latitudeAccuracy: view.getFloat32(nodesOffset + i * gridRecordLength + 8, isLittleEndian),\n longitudeAccuracy: view.getFloat32(nodesOffset + i * gridRecordLength + 12, isLittleEndian),\n };\n gridShiftRecords.push(record);\n }\n return gridShiftRecords;\n}\n","import parseCode from './parseCode';\nimport extend from './extend';\nimport projections from './projections';\nimport {sphere as dc_sphere, eccentricity as dc_eccentricity} from './deriveConstants';\nimport Datum from './constants/Datum';\nimport datum from './datum';\nimport match from './match';\nimport {getNadgrids} from \"./nadgrid\";\n\nfunction Projection(srsCode,callback) {\n if (!(this instanceof Projection)) {\n return new Projection(srsCode);\n }\n callback = callback || function(error){\n if(error){\n throw error;\n }\n };\n var json = parseCode(srsCode);\n if(typeof json !== 'object'){\n callback(srsCode);\n return;\n }\n var ourProj = Projection.projections.get(json.projName);\n if(!ourProj){\n callback(srsCode);\n return;\n }\n if (json.datumCode && json.datumCode !== 'none') {\n var datumDef = match(Datum, json.datumCode);\n if (datumDef) {\n json.datum_params = json.datum_params || (datumDef.towgs84 ? datumDef.towgs84.split(',') : null);\n json.ellps = datumDef.ellipse;\n json.datumName = datumDef.datumName ? datumDef.datumName : json.datumCode;\n }\n }\n json.k0 = json.k0 || 1.0;\n json.axis = json.axis || 'enu';\n json.ellps = json.ellps || 'wgs84';\n json.lat1 = json.lat1 || json.lat0; // Lambert_Conformal_Conic_1SP, for example, needs this\n\n var sphere_ = dc_sphere(json.a, json.b, json.rf, json.ellps, json.sphere);\n var ecc = dc_eccentricity(sphere_.a, sphere_.b, sphere_.rf, json.R_A);\n var nadgrids = getNadgrids(json.nadgrids);\n var datumObj = json.datum || datum(json.datumCode, json.datum_params, sphere_.a, sphere_.b, ecc.es, ecc.ep2,\n nadgrids);\n\n extend(this, json); // transfer everything over from the projection because we don't know what we'll need\n extend(this, ourProj); // transfer all the methods from the projection\n\n // copy the 4 things over we calculated in deriveConstants.sphere\n this.a = sphere_.a;\n this.b = sphere_.b;\n this.rf = sphere_.rf;\n this.sphere = sphere_.sphere;\n\n // copy the 3 things we calculated in deriveConstants.eccentricity\n this.es = ecc.es;\n this.e = ecc.e;\n this.ep2 = ecc.ep2;\n\n // add in the datum object\n this.datum = datumObj;\n\n // init the projection\n this.init();\n\n // legecy callback from back in the day when it went to spatialreference.org\n callback(null, this);\n\n}\nProjection.projections = projections;\nProjection.projections.start();\nexport default Projection;\n","'use strict';\nimport {PJD_3PARAM, PJD_7PARAM, HALF_PI} from './constants/values';\nexport function compareDatums(source, dest) {\n if (source.datum_type !== dest.datum_type) {\n return false; // false, datums are not equal\n } else if (source.a !== dest.a || Math.abs(source.es - dest.es) > 0.000000000050) {\n // the tolerance for es is to ensure that GRS80 and WGS84\n // are considered identical\n return false;\n } else if (source.datum_type === PJD_3PARAM) {\n return (source.datum_params[0] === dest.datum_params[0] && source.datum_params[1] === dest.datum_params[1] && source.datum_params[2] === dest.datum_params[2]);\n } else if (source.datum_type === PJD_7PARAM) {\n return (source.datum_params[0] === dest.datum_params[0] && source.datum_params[1] === dest.datum_params[1] && source.datum_params[2] === dest.datum_params[2] && source.datum_params[3] === dest.datum_params[3] && source.datum_params[4] === dest.datum_params[4] && source.datum_params[5] === dest.datum_params[5] && source.datum_params[6] === dest.datum_params[6]);\n } else {\n return true; // datums are equal\n }\n} // cs_compare_datums()\n\n/*\n * The function Convert_Geodetic_To_Geocentric converts geodetic coordinates\n * (latitude, longitude, and height) to geocentric coordinates (X, Y, Z),\n * according to the current ellipsoid parameters.\n *\n * Latitude : Geodetic latitude in radians (input)\n * Longitude : Geodetic longitude in radians (input)\n * Height : Geodetic height, in meters (input)\n * X : Calculated Geocentric X coordinate, in meters (output)\n * Y : Calculated Geocentric Y coordinate, in meters (output)\n * Z : Calculated Geocentric Z coordinate, in meters (output)\n *\n */\nexport function geodeticToGeocentric(p, es, a) {\n var Longitude = p.x;\n var Latitude = p.y;\n var Height = p.z ? p.z : 0; //Z value not always supplied\n\n var Rn; /* Earth radius at location */\n var Sin_Lat; /* Math.sin(Latitude) */\n var Sin2_Lat; /* Square of Math.sin(Latitude) */\n var Cos_Lat; /* Math.cos(Latitude) */\n\n /*\n ** Don't blow up if Latitude is just a little out of the value\n ** range as it may just be a rounding issue. Also removed longitude\n ** test, it should be wrapped by Math.cos() and Math.sin(). NFW for PROJ.4, Sep/2001.\n */\n if (Latitude < -HALF_PI && Latitude > -1.001 * HALF_PI) {\n Latitude = -HALF_PI;\n } else if (Latitude > HALF_PI && Latitude < 1.001 * HALF_PI) {\n Latitude = HALF_PI;\n } else if (Latitude < -HALF_PI) {\n /* Latitude out of range */\n //..reportError('geocent:lat out of range:' + Latitude);\n return { x: -Infinity, y: -Infinity, z: p.z };\n } else if (Latitude > HALF_PI) {\n /* Latitude out of range */\n return { x: Infinity, y: Infinity, z: p.z };\n }\n\n if (Longitude > Math.PI) {\n Longitude -= (2 * Math.PI);\n }\n Sin_Lat = Math.sin(Latitude);\n Cos_Lat = Math.cos(Latitude);\n Sin2_Lat = Sin_Lat * Sin_Lat;\n Rn = a / (Math.sqrt(1.0e0 - es * Sin2_Lat));\n return {\n x: (Rn + Height) * Cos_Lat * Math.cos(Longitude),\n y: (Rn + Height) * Cos_Lat * Math.sin(Longitude),\n z: ((Rn * (1 - es)) + Height) * Sin_Lat\n };\n} // cs_geodetic_to_geocentric()\n\nexport function geocentricToGeodetic(p, es, a, b) {\n /* local defintions and variables */\n /* end-criterium of loop, accuracy of sin(Latitude) */\n var genau = 1e-12;\n var genau2 = (genau * genau);\n var maxiter = 30;\n\n var P; /* distance between semi-minor axis and location */\n var RR; /* distance between center and location */\n var CT; /* sin of geocentric latitude */\n var ST; /* cos of geocentric latitude */\n var RX;\n var RK;\n var RN; /* Earth radius at location */\n var CPHI0; /* cos of start or old geodetic latitude in iterations */\n var SPHI0; /* sin of start or old geodetic latitude in iterations */\n var CPHI; /* cos of searched geodetic latitude */\n var SPHI; /* sin of searched geodetic latitude */\n var SDPHI; /* end-criterium: addition-theorem of sin(Latitude(iter)-Latitude(iter-1)) */\n var iter; /* # of continous iteration, max. 30 is always enough (s.a.) */\n\n var X = p.x;\n var Y = p.y;\n var Z = p.z ? p.z : 0.0; //Z value not always supplied\n var Longitude;\n var Latitude;\n var Height;\n\n P = Math.sqrt(X * X + Y * Y);\n RR = Math.sqrt(X * X + Y * Y + Z * Z);\n\n /* special cases for latitude and longitude */\n if (P / a < genau) {\n\n /* special case, if P=0. (X=0., Y=0.) */\n Longitude = 0.0;\n\n /* if (X,Y,Z)=(0.,0.,0.) then Height becomes semi-minor axis\n * of ellipsoid (=center of mass), Latitude becomes PI/2 */\n if (RR / a < genau) {\n Latitude = HALF_PI;\n Height = -b;\n return {\n x: p.x,\n y: p.y,\n z: p.z\n };\n }\n } else {\n /* ellipsoidal (geodetic) longitude\n * interval: -PI < Longitude <= +PI */\n Longitude = Math.atan2(Y, X);\n }\n\n /* --------------------------------------------------------------\n * Following iterative algorithm was developped by\n * \"Institut for Erdmessung\", University of Hannover, July 1988.\n * Internet: www.ife.uni-hannover.de\n * Iterative computation of CPHI,SPHI and Height.\n * Iteration of CPHI and SPHI to 10**-12 radian resp.\n * 2*10**-7 arcsec.\n * --------------------------------------------------------------\n */\n CT = Z / RR;\n ST = P / RR;\n RX = 1.0 / Math.sqrt(1.0 - es * (2.0 - es) * ST * ST);\n CPHI0 = ST * (1.0 - es) * RX;\n SPHI0 = CT * RX;\n iter = 0;\n\n /* loop to find sin(Latitude) resp. Latitude\n * until |sin(Latitude(iter)-Latitude(iter-1))| < genau */\n do {\n iter++;\n RN = a / Math.sqrt(1.0 - es * SPHI0 * SPHI0);\n\n /* ellipsoidal (geodetic) height */\n Height = P * CPHI0 + Z * SPHI0 - RN * (1.0 - es * SPHI0 * SPHI0);\n\n RK = es * RN / (RN + Height);\n RX = 1.0 / Math.sqrt(1.0 - RK * (2.0 - RK) * ST * ST);\n CPHI = ST * (1.0 - RK) * RX;\n SPHI = CT * RX;\n SDPHI = SPHI * CPHI0 - CPHI * SPHI0;\n CPHI0 = CPHI;\n SPHI0 = SPHI;\n }\n while (SDPHI * SDPHI > genau2 && iter < maxiter);\n\n /* ellipsoidal (geodetic) latitude */\n Latitude = Math.atan(SPHI / Math.abs(CPHI));\n return {\n x: Longitude,\n y: Latitude,\n z: Height\n };\n} // cs_geocentric_to_geodetic()\n\n/****************************************************************/\n// pj_geocentic_to_wgs84( p )\n// p = point to transform in geocentric coordinates (x,y,z)\n\n\n/** point object, nothing fancy, just allows values to be\n passed back and forth by reference rather than by value.\n Other point classes may be used as long as they have\n x and y properties, which will get modified in the transform method.\n*/\nexport function geocentricToWgs84(p, datum_type, datum_params) {\n\n if (datum_type === PJD_3PARAM) {\n // if( x[io] === HUGE_VAL )\n // continue;\n return {\n x: p.x + datum_params[0],\n y: p.y + datum_params[1],\n z: p.z + datum_params[2],\n };\n } else if (datum_type === PJD_7PARAM) {\n var Dx_BF = datum_params[0];\n var Dy_BF = datum_params[1];\n var Dz_BF = datum_params[2];\n var Rx_BF = datum_params[3];\n var Ry_BF = datum_params[4];\n var Rz_BF = datum_params[5];\n var M_BF = datum_params[6];\n // if( x[io] === HUGE_VAL )\n // continue;\n return {\n x: M_BF * (p.x - Rz_BF * p.y + Ry_BF * p.z) + Dx_BF,\n y: M_BF * (Rz_BF * p.x + p.y - Rx_BF * p.z) + Dy_BF,\n z: M_BF * (-Ry_BF * p.x + Rx_BF * p.y + p.z) + Dz_BF\n };\n }\n} // cs_geocentric_to_wgs84\n\n/****************************************************************/\n// pj_geocentic_from_wgs84()\n// coordinate system definition,\n// point to transform in geocentric coordinates (x,y,z)\nexport function geocentricFromWgs84(p, datum_type, datum_params) {\n\n if (datum_type === PJD_3PARAM) {\n //if( x[io] === HUGE_VAL )\n // continue;\n return {\n x: p.x - datum_params[0],\n y: p.y - datum_params[1],\n z: p.z - datum_params[2],\n };\n\n } else if (datum_type === PJD_7PARAM) {\n var Dx_BF = datum_params[0];\n var Dy_BF = datum_params[1];\n var Dz_BF = datum_params[2];\n var Rx_BF = datum_params[3];\n var Ry_BF = datum_params[4];\n var Rz_BF = datum_params[5];\n var M_BF = datum_params[6];\n var x_tmp = (p.x - Dx_BF) / M_BF;\n var y_tmp = (p.y - Dy_BF) / M_BF;\n var z_tmp = (p.z - Dz_BF) / M_BF;\n //if( x[io] === HUGE_VAL )\n // continue;\n\n return {\n x: x_tmp + Rz_BF * y_tmp - Ry_BF * z_tmp,\n y: -Rz_BF * x_tmp + y_tmp + Rx_BF * z_tmp,\n z: Ry_BF * x_tmp - Rx_BF * y_tmp + z_tmp\n };\n } //cs_geocentric_from_wgs84()\n}\n","import {\n PJD_3PARAM,\n PJD_7PARAM,\n PJD_GRIDSHIFT,\n PJD_NODATUM,\n R2D,\n SRS_WGS84_ESQUARED,\n SRS_WGS84_SEMIMAJOR, SRS_WGS84_SEMIMINOR\n} from './constants/values';\n\nimport {geodeticToGeocentric, geocentricToGeodetic, geocentricToWgs84, geocentricFromWgs84, compareDatums} from './datumUtils';\nimport adjust_lon from \"./common/adjust_lon\";\nfunction checkParams(type) {\n return (type === PJD_3PARAM || type === PJD_7PARAM);\n}\n\nexport default function(source, dest, point) {\n // Short cut if the datums are identical.\n if (compareDatums(source, dest)) {\n return point; // in this case, zero is sucess,\n // whereas cs_compare_datums returns 1 to indicate TRUE\n // confusing, should fix this\n }\n\n // Explicitly skip datum transform by setting 'datum=none' as parameter for either source or dest\n if (source.datum_type === PJD_NODATUM || dest.datum_type === PJD_NODATUM) {\n return point;\n }\n\n // If this datum requires grid shifts, then apply it to geodetic coordinates.\n var source_a = source.a;\n var source_es = source.es;\n if (source.datum_type === PJD_GRIDSHIFT) {\n var gridShiftCode = applyGridShift(source, false, point);\n if (gridShiftCode !== 0) {\n return undefined;\n }\n source_a = SRS_WGS84_SEMIMAJOR;\n source_es = SRS_WGS84_ESQUARED;\n }\n\n var dest_a = dest.a;\n var dest_b = dest.b;\n var dest_es = dest.es;\n if (dest.datum_type === PJD_GRIDSHIFT) {\n dest_a = SRS_WGS84_SEMIMAJOR;\n dest_b = SRS_WGS84_SEMIMINOR;\n dest_es = SRS_WGS84_ESQUARED;\n }\n\n // Do we need to go through geocentric coordinates?\n if (source_es === dest_es && source_a === dest_a && !checkParams(source.datum_type) && !checkParams(dest.datum_type)) {\n return point;\n }\n\n // Convert to geocentric coordinates.\n point = geodeticToGeocentric(point, source_es, source_a);\n // Convert between datums\n if (checkParams(source.datum_type)) {\n point = geocentricToWgs84(point, source.datum_type, source.datum_params);\n }\n if (checkParams(dest.datum_type)) {\n point = geocentricFromWgs84(point, dest.datum_type, dest.datum_params);\n }\n point = geocentricToGeodetic(point, dest_es, dest_a, dest_b);\n\n if (dest.datum_type === PJD_GRIDSHIFT) {\n var destGridShiftResult = applyGridShift(dest, true, point);\n if (destGridShiftResult !== 0) {\n return undefined;\n }\n }\n\n return point;\n}\n\nexport function applyGridShift(source, inverse, point) {\n if (source.grids === null || source.grids.length === 0) {\n console.log('Grid shift grids not found');\n return -1;\n }\n var input = {x: -point.x, y: point.y};\n var output = {x: Number.NaN, y: Number.NaN};\n var onlyMandatoryGrids = false;\n var attemptedGrids = [];\n for (var i = 0; i < source.grids.length; i++) {\n var grid = source.grids[i];\n attemptedGrids.push(grid.name);\n if (grid.isNull) {\n output = input;\n break;\n }\n onlyMandatoryGrids = grid.mandatory;\n if (grid.grid === null) {\n if (grid.mandatory) {\n console.log(\"Unable to find mandatory grid '\" + grid.name + \"'\");\n return -1;\n }\n continue;\n }\n var subgrid = grid.grid.subgrids[0];\n // skip tables that don't match our point at all\n var epsilon = (Math.abs(subgrid.del[1]) + Math.abs(subgrid.del[0])) / 10000.0;\n var minX = subgrid.ll[0] - epsilon;\n var minY = subgrid.ll[1] - epsilon;\n var maxX = subgrid.ll[0] + (subgrid.lim[0] - 1) * subgrid.del[0] + epsilon;\n var maxY = subgrid.ll[1] + (subgrid.lim[1] - 1) * subgrid.del[1] + epsilon;\n if (minY > input.y || minX > input.x || maxY < input.y || maxX < input.x ) {\n continue;\n }\n output = applySubgridShift(input, inverse, subgrid);\n if (!isNaN(output.x)) {\n break;\n }\n }\n if (isNaN(output.x)) {\n console.log(\"Failed to find a grid shift table for location '\"+\n -input.x * R2D + \" \" + input.y * R2D + \" tried: '\" + attemptedGrids + \"'\");\n return -1;\n }\n point.x = -output.x;\n point.y = output.y;\n return 0;\n}\n\nfunction applySubgridShift(pin, inverse, ct) {\n var val = {x: Number.NaN, y: Number.NaN};\n if (isNaN(pin.x)) { return val; }\n var tb = {x: pin.x, y: pin.y};\n tb.x -= ct.ll[0];\n tb.y -= ct.ll[1];\n tb.x = adjust_lon(tb.x - Math.PI) + Math.PI;\n var t = nadInterpolate(tb, ct);\n if (inverse) {\n if (isNaN(t.x)) {\n return val;\n }\n t.x = tb.x - t.x;\n t.y = tb.y - t.y;\n var i = 9, tol = 1e-12;\n var dif, del;\n do {\n del = nadInterpolate(t, ct);\n if (isNaN(del.x)) {\n console.log(\"Inverse grid shift iteration failed, presumably at grid edge. Using first approximation.\");\n break;\n }\n dif = {x: tb.x - (del.x + t.x), y: tb.y - (del.y + t.y)};\n t.x += dif.x;\n t.y += dif.y;\n } while (i-- && Math.abs(dif.x) > tol && Math.abs(dif.y) > tol);\n if (i < 0) {\n console.log(\"Inverse grid shift iterator failed to converge.\");\n return val;\n }\n val.x = adjust_lon(t.x + ct.ll[0]);\n val.y = t.y + ct.ll[1];\n } else {\n if (!isNaN(t.x)) {\n val.x = pin.x + t.x;\n val.y = pin.y + t.y;\n }\n }\n return val;\n}\n\nfunction nadInterpolate(pin, ct) {\n var t = {x: pin.x / ct.del[0], y: pin.y / ct.del[1]};\n var indx = {x: Math.floor(t.x), y: Math.floor(t.y)};\n var frct = {x: t.x - 1.0 * indx.x, y: t.y - 1.0 * indx.y};\n var val= {x: Number.NaN, y: Number.NaN};\n var inx;\n if (indx.x < 0 || indx.x >= ct.lim[0]) {\n return val;\n }\n if (indx.y < 0 || indx.y >= ct.lim[1]) {\n return val;\n }\n inx = (indx.y * ct.lim[0]) + indx.x;\n var f00 = {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};\n inx++;\n var f10= {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};\n inx += ct.lim[0];\n var f11 = {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};\n inx--;\n var f01 = {x: ct.cvs[inx][0], y: ct.cvs[inx][1]};\n var m11 = frct.x * frct.y, m10 = frct.x * (1.0 - frct.y),\n m00 = (1.0 - frct.x) * (1.0 - frct.y), m01 = (1.0 - frct.x) * frct.y;\n val.x = (m00 * f00.x + m10 * f10.x + m01 * f01.x + m11 * f11.x);\n val.y = (m00 * f00.y + m10 * f10.y + m01 * f01.y + m11 * f11.y);\n return val;\n}\n","export default function(crs, denorm, point) {\n var xin = point.x,\n yin = point.y,\n zin = point.z || 0.0;\n var v, t, i;\n var out = {};\n for (i = 0; i < 3; i++) {\n if (denorm && i === 2 && point.z === undefined) {\n continue;\n }\n if (i === 0) {\n v = xin;\n if (\"ew\".indexOf(crs.axis[i]) !== -1) {\n t = 'x';\n } else {\n t = 'y';\n }\n\n }\n else if (i === 1) {\n v = yin;\n if (\"ns\".indexOf(crs.axis[i]) !== -1) {\n t = 'y';\n } else {\n t = 'x';\n }\n }\n else {\n v = zin;\n t = 'z';\n }\n switch (crs.axis[i]) {\n case 'e':\n out[t] = v;\n break;\n case 'w':\n out[t] = -v;\n break;\n case 'n':\n out[t] = v;\n break;\n case 's':\n out[t] = -v;\n break;\n case 'u':\n if (point[t] !== undefined) {\n out.z = v;\n }\n break;\n case 'd':\n if (point[t] !== undefined) {\n out.z = -v;\n }\n break;\n default:\n //console.log(\"ERROR: unknow axis (\"+crs.axis[i]+\") - check definition of \"+crs.projName);\n return null;\n }\n }\n return out;\n}\n","export default function (array){\n var out = {\n x: array[0],\n y: array[1]\n };\n if (array.length>2) {\n out.z = array[2];\n }\n if (array.length>3) {\n out.m = array[3];\n }\n return out;\n}","export default function (point) {\n checkCoord(point.x);\n checkCoord(point.y);\n}\nfunction checkCoord(num) {\n if (typeof Number.isFinite === 'function') {\n if (Number.isFinite(num)) {\n return;\n }\n throw new TypeError('coordinates must be finite numbers');\n }\n if (typeof num !== 'number' || num !== num || !isFinite(num)) {\n throw new TypeError('coordinates must be finite numbers');\n }\n}\n","import {D2R, R2D, PJD_3PARAM, PJD_7PARAM} from './constants/values';\nimport datum_transform from './datum_transform';\nimport adjust_axis from './adjust_axis';\nimport proj from './Proj';\nimport toPoint from './common/toPoint';\nimport checkSanity from './checkSanity';\n\nfunction checkNotWGS(source, dest) {\n return ((source.datum.datum_type === PJD_3PARAM || source.datum.datum_type === PJD_7PARAM) && dest.datumCode !== 'WGS84') || ((dest.datum.datum_type === PJD_3PARAM || dest.datum.datum_type === PJD_7PARAM) && source.datumCode !== 'WGS84');\n}\n\nexport default function transform(source, dest, point, enforceAxis) {\n var wgs84;\n if (Array.isArray(point)) {\n point = toPoint(point);\n }\n checkSanity(point);\n // Workaround for datum shifts towgs84, if either source or destination projection is not wgs84\n if (source.datum && dest.datum && checkNotWGS(source, dest)) {\n wgs84 = new proj('WGS84');\n point = transform(source, wgs84, point, enforceAxis);\n source = wgs84;\n }\n // DGR, 2010/11/12\n if (enforceAxis && source.axis !== 'enu') {\n point = adjust_axis(source, false, point);\n }\n // Transform source points to long/lat, if they aren't already.\n if (source.projName === 'longlat') {\n point = {\n x: point.x * D2R,\n y: point.y * D2R,\n z: point.z || 0\n };\n } else {\n if (source.to_meter) {\n point = {\n x: point.x * source.to_meter,\n y: point.y * source.to_meter,\n z: point.z || 0\n };\n }\n point = source.inverse(point); // Convert Cartesian to longlat\n if (!point) {\n return;\n }\n }\n // Adjust for the prime meridian if necessary\n if (source.from_greenwich) {\n point.x += source.from_greenwich;\n }\n\n // Convert datums if needed, and if possible.\n point = datum_transform(source.datum, dest.datum, point);\n if (!point) {\n return;\n }\n\n // Adjust for the prime meridian if necessary\n if (dest.from_greenwich) {\n point = {\n x: point.x - dest.from_greenwich,\n y: point.y,\n z: point.z || 0\n };\n }\n\n if (dest.projName === 'longlat') {\n // convert radians to decimal degrees\n point = {\n x: point.x * R2D,\n y: point.y * R2D,\n z: point.z || 0\n };\n } else { // else project\n point = dest.forward(point);\n if (dest.to_meter) {\n point = {\n x: point.x / dest.to_meter,\n y: point.y / dest.to_meter,\n z: point.z || 0\n };\n }\n }\n\n // DGR, 2010/11/12\n if (enforceAxis && dest.axis !== 'enu') {\n return adjust_axis(dest, true, point);\n }\n\n return point;\n}\n","import proj from './Proj';\nimport transform from './transform';\nvar wgs84 = proj('WGS84');\n\nfunction transformer(from, to, coords, enforceAxis) {\n var transformedArray, out, keys;\n if (Array.isArray(coords)) {\n transformedArray = transform(from, to, coords, enforceAxis) || {x: NaN, y: NaN};\n if (coords.length > 2) {\n if ((typeof from.name !== 'undefined' && from.name === 'geocent') || (typeof to.name !== 'undefined' && to.name === 'geocent')) {\n if (typeof transformedArray.z === 'number') {\n return [transformedArray.x, transformedArray.y, transformedArray.z].concat(coords.splice(3));\n } else {\n return [transformedArray.x, transformedArray.y, coords[2]].concat(coords.splice(3));\n }\n } else {\n return [transformedArray.x, transformedArray.y].concat(coords.splice(2));\n }\n } else {\n return [transformedArray.x, transformedArray.y];\n }\n } else {\n out = transform(from, to, coords, enforceAxis);\n keys = Object.keys(coords);\n if (keys.length === 2) {\n return out;\n }\n keys.forEach(function (key) {\n if ((typeof from.name !== 'undefined' && from.name === 'geocent') || (typeof to.name !== 'undefined' && to.name === 'geocent')) {\n if (key === 'x' || key === 'y' || key === 'z') {\n return;\n }\n } else {\n if (key === 'x' || key === 'y') {\n return;\n }\n }\n out[key] = coords[key];\n });\n return out;\n }\n}\n\nfunction checkProj(item) {\n if (item instanceof proj) {\n return item;\n }\n if (item.oProj) {\n return item.oProj;\n }\n return proj(item);\n}\n\nfunction proj4(fromProj, toProj, coord) {\n fromProj = checkProj(fromProj);\n var single = false;\n var obj;\n if (typeof toProj === 'undefined') {\n toProj = fromProj;\n fromProj = wgs84;\n single = true;\n } else if (typeof toProj.x !== 'undefined' || Array.isArray(toProj)) {\n coord = toProj;\n toProj = fromProj;\n fromProj = wgs84;\n single = true;\n }\n toProj = checkProj(toProj);\n if (coord) {\n return transformer(fromProj, toProj, coord);\n } else {\n obj = {\n forward: function (coords, enforceAxis) {\n return transformer(fromProj, toProj, coords, enforceAxis);\n },\n inverse: function (coords, enforceAxis) {\n return transformer(toProj, fromProj, coords, enforceAxis);\n }\n };\n if (single) {\n obj.oProj = toProj;\n }\n return obj;\n }\n}\nexport default proj4;","\n\n\n/**\n * UTM zones are grouped, and assigned to one of a group of 6\n * sets.\n *\n * {int} @private\n */\nvar NUM_100K_SETS = 6;\n\n/**\n * The column letters (for easting) of the lower left value, per\n * set.\n *\n * {string} @private\n */\nvar SET_ORIGIN_COLUMN_LETTERS = 'AJSAJS';\n\n/**\n * The row letters (for northing) of the lower left value, per\n * set.\n *\n * {string} @private\n */\nvar SET_ORIGIN_ROW_LETTERS = 'AFAFAF';\n\nvar A = 65; // A\nvar I = 73; // I\nvar O = 79; // O\nvar V = 86; // V\nvar Z = 90; // Z\nexport default {\n forward: forward,\n inverse: inverse,\n toPoint: toPoint\n};\n/**\n * Conversion of lat/lon to MGRS.\n *\n * @param {object} ll Object literal with lat and lon properties on a\n * WGS84 ellipsoid.\n * @param {int} accuracy Accuracy in digits (5 for 1 m, 4 for 10 m, 3 for\n * 100 m, 2 for 1000 m or 1 for 10000 m). Optional, default is 5.\n * @return {string} the MGRS string for the given location and accuracy.\n */\nexport function forward(ll, accuracy) {\n accuracy = accuracy || 5; // default accuracy 1m\n return encode(LLtoUTM({\n lat: ll[1],\n lon: ll[0]\n }), accuracy);\n};\n\n/**\n * Conversion of MGRS to lat/lon.\n *\n * @param {string} mgrs MGRS string.\n * @return {array} An array with left (longitude), bottom (latitude), right\n * (longitude) and top (latitude) values in WGS84, representing the\n * bounding box for the provided MGRS reference.\n */\nexport function inverse(mgrs) {\n var bbox = UTMtoLL(decode(mgrs.toUpperCase()));\n if (bbox.lat && bbox.lon) {\n return [bbox.lon, bbox.lat, bbox.lon, bbox.lat];\n }\n return [bbox.left, bbox.bottom, bbox.right, bbox.top];\n};\n\nexport function toPoint(mgrs) {\n var bbox = UTMtoLL(decode(mgrs.toUpperCase()));\n if (bbox.lat && bbox.lon) {\n return [bbox.lon, bbox.lat];\n }\n return [(bbox.left + bbox.right) / 2, (bbox.top + bbox.bottom) / 2];\n};\n/**\n * Conversion from degrees to radians.\n *\n * @private\n * @param {number} deg the angle in degrees.\n * @return {number} the angle in radians.\n */\nfunction degToRad(deg) {\n return (deg * (Math.PI / 180.0));\n}\n\n/**\n * Conversion from radians to degrees.\n *\n * @private\n * @param {number} rad the angle in radians.\n * @return {number} the angle in degrees.\n */\nfunction radToDeg(rad) {\n return (180.0 * (rad / Math.PI));\n}\n\n/**\n * Converts a set of Longitude and Latitude co-ordinates to UTM\n * using the WGS84 ellipsoid.\n *\n * @private\n * @param {object} ll Object literal with lat and lon properties\n * representing the WGS84 coordinate to be converted.\n * @return {object} Object literal containing the UTM value with easting,\n * northing, zoneNumber and zoneLetter properties, and an optional\n * accuracy property in digits. Returns null if the conversion failed.\n */\nfunction LLtoUTM(ll) {\n var Lat = ll.lat;\n var Long = ll.lon;\n var a = 6378137.0; //ellip.radius;\n var eccSquared = 0.00669438; //ellip.eccsq;\n var k0 = 0.9996;\n var LongOrigin;\n var eccPrimeSquared;\n var N, T, C, A, M;\n var LatRad = degToRad(Lat);\n var LongRad = degToRad(Long);\n var LongOriginRad;\n var ZoneNumber;\n // (int)\n ZoneNumber = Math.floor((Long + 180) / 6) + 1;\n\n //Make sure the longitude 180.00 is in Zone 60\n if (Long === 180) {\n ZoneNumber = 60;\n }\n\n // Special zone for Norway\n if (Lat >= 56.0 && Lat < 64.0 && Long >= 3.0 && Long < 12.0) {\n ZoneNumber = 32;\n }\n\n // Special zones for Svalbard\n if (Lat >= 72.0 && Lat < 84.0) {\n if (Long >= 0.0 && Long < 9.0) {\n ZoneNumber = 31;\n }\n else if (Long >= 9.0 && Long < 21.0) {\n ZoneNumber = 33;\n }\n else if (Long >= 21.0 && Long < 33.0) {\n ZoneNumber = 35;\n }\n else if (Long >= 33.0 && Long < 42.0) {\n ZoneNumber = 37;\n }\n }\n\n LongOrigin = (ZoneNumber - 1) * 6 - 180 + 3; //+3 puts origin\n // in middle of\n // zone\n LongOriginRad = degToRad(LongOrigin);\n\n eccPrimeSquared = (eccSquared) / (1 - eccSquared);\n\n N = a / Math.sqrt(1 - eccSquared * Math.sin(LatRad) * Math.sin(LatRad));\n T = Math.tan(LatRad) * Math.tan(LatRad);\n C = eccPrimeSquared * Math.cos(LatRad) * Math.cos(LatRad);\n A = Math.cos(LatRad) * (LongRad - LongOriginRad);\n\n M = a * ((1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256) * LatRad - (3 * eccSquared / 8 + 3 * eccSquared * eccSquared / 32 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(2 * LatRad) + (15 * eccSquared * eccSquared / 256 + 45 * eccSquared * eccSquared * eccSquared / 1024) * Math.sin(4 * LatRad) - (35 * eccSquared * eccSquared * eccSquared / 3072) * Math.sin(6 * LatRad));\n\n var UTMEasting = (k0 * N * (A + (1 - T + C) * A * A * A / 6.0 + (5 - 18 * T + T * T + 72 * C - 58 * eccPrimeSquared) * A * A * A * A * A / 120.0) + 500000.0);\n\n var UTMNorthing = (k0 * (M + N * Math.tan(LatRad) * (A * A / 2 + (5 - T + 9 * C + 4 * C * C) * A * A * A * A / 24.0 + (61 - 58 * T + T * T + 600 * C - 330 * eccPrimeSquared) * A * A * A * A * A * A / 720.0)));\n if (Lat < 0.0) {\n UTMNorthing += 10000000.0; //10000000 meter offset for\n // southern hemisphere\n }\n\n return {\n northing: Math.round(UTMNorthing),\n easting: Math.round(UTMEasting),\n zoneNumber: ZoneNumber,\n zoneLetter: getLetterDesignator(Lat)\n };\n}\n\n/**\n * Converts UTM coords to lat/long, using the WGS84 ellipsoid. This is a convenience\n * class where the Zone can be specified as a single string eg.\"60N\" which\n * is then broken down into the ZoneNumber and ZoneLetter.\n *\n * @private\n * @param {object} utm An object literal with northing, easting, zoneNumber\n * and zoneLetter properties. If an optional accuracy property is\n * provided (in meters), a bounding box will be returned instead of\n * latitude and longitude.\n * @return {object} An object literal containing either lat and lon values\n * (if no accuracy was provided), or top, right, bottom and left values\n * for the bounding box calculated according to the provided accuracy.\n * Returns null if the conversion failed.\n */\nfunction UTMtoLL(utm) {\n\n var UTMNorthing = utm.northing;\n var UTMEasting = utm.easting;\n var zoneLetter = utm.zoneLetter;\n var zoneNumber = utm.zoneNumber;\n // check the ZoneNummber is valid\n if (zoneNumber < 0 || zoneNumber > 60) {\n return null;\n }\n\n var k0 = 0.9996;\n var a = 6378137.0; //ellip.radius;\n var eccSquared = 0.00669438; //ellip.eccsq;\n var eccPrimeSquared;\n var e1 = (1 - Math.sqrt(1 - eccSquared)) / (1 + Math.sqrt(1 - eccSquared));\n var N1, T1, C1, R1, D, M;\n var LongOrigin;\n var mu, phi1Rad;\n\n // remove 500,000 meter offset for longitude\n var x = UTMEasting - 500000.0;\n var y = UTMNorthing;\n\n // We must know somehow if we are in the Northern or Southern\n // hemisphere, this is the only time we use the letter So even\n // if the Zone letter isn't exactly correct it should indicate\n // the hemisphere correctly\n if (zoneLetter < 'N') {\n y -= 10000000.0; // remove 10,000,000 meter offset used\n // for southern hemisphere\n }\n\n // There are 60 zones with zone 1 being at West -180 to -174\n LongOrigin = (zoneNumber - 1) * 6 - 180 + 3; // +3 puts origin\n // in middle of\n // zone\n\n eccPrimeSquared = (eccSquared) / (1 - eccSquared);\n\n M = y / k0;\n mu = M / (a * (1 - eccSquared / 4 - 3 * eccSquared * eccSquared / 64 - 5 * eccSquared * eccSquared * eccSquared / 256));\n\n phi1Rad = mu + (3 * e1 / 2 - 27 * e1 * e1 * e1 / 32) * Math.sin(2 * mu) + (21 * e1 * e1 / 16 - 55 * e1 * e1 * e1 * e1 / 32) * Math.sin(4 * mu) + (151 * e1 * e1 * e1 / 96) * Math.sin(6 * mu);\n // double phi1 = ProjMath.radToDeg(phi1Rad);\n\n N1 = a / Math.sqrt(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad));\n T1 = Math.tan(phi1Rad) * Math.tan(phi1Rad);\n C1 = eccPrimeSquared * Math.cos(phi1Rad) * Math.cos(phi1Rad);\n R1 = a * (1 - eccSquared) / Math.pow(1 - eccSquared * Math.sin(phi1Rad) * Math.sin(phi1Rad), 1.5);\n D = x / (N1 * k0);\n\n var lat = phi1Rad - (N1 * Math.tan(phi1Rad) / R1) * (D * D / 2 - (5 + 3 * T1 + 10 * C1 - 4 * C1 * C1 - 9 * eccPrimeSquared) * D * D * D * D / 24 + (61 + 90 * T1 + 298 * C1 + 45 * T1 * T1 - 252 * eccPrimeSquared - 3 * C1 * C1) * D * D * D * D * D * D / 720);\n lat = radToDeg(lat);\n\n var lon = (D - (1 + 2 * T1 + C1) * D * D * D / 6 + (5 - 2 * C1 + 28 * T1 - 3 * C1 * C1 + 8 * eccPrimeSquared + 24 * T1 * T1) * D * D * D * D * D / 120) / Math.cos(phi1Rad);\n lon = LongOrigin + radToDeg(lon);\n\n var result;\n if (utm.accuracy) {\n var topRight = UTMtoLL({\n northing: utm.northing + utm.accuracy,\n easting: utm.easting + utm.accuracy,\n zoneLetter: utm.zoneLetter,\n zoneNumber: utm.zoneNumber\n });\n result = {\n top: topRight.lat,\n right: topRight.lon,\n bottom: lat,\n left: lon\n };\n }\n else {\n result = {\n lat: lat,\n lon: lon\n };\n }\n return result;\n}\n\n/**\n * Calculates the MGRS letter designator for the given latitude.\n *\n * @private\n * @param {number} lat The latitude in WGS84 to get the letter designator\n * for.\n * @return {char} The letter designator.\n */\nfunction getLetterDesignator(lat) {\n //This is here as an error flag to show that the Latitude is\n //outside MGRS limits\n var LetterDesignator = 'Z';\n\n if ((84 >= lat) && (lat >= 72)) {\n LetterDesignator = 'X';\n }\n else if ((72 > lat) && (lat >= 64)) {\n LetterDesignator = 'W';\n }\n else if ((64 > lat) && (lat >= 56)) {\n LetterDesignator = 'V';\n }\n else if ((56 > lat) && (lat >= 48)) {\n LetterDesignator = 'U';\n }\n else if ((48 > lat) && (lat >= 40)) {\n LetterDesignator = 'T';\n }\n else if ((40 > lat) && (lat >= 32)) {\n LetterDesignator = 'S';\n }\n else if ((32 > lat) && (lat >= 24)) {\n LetterDesignator = 'R';\n }\n else if ((24 > lat) && (lat >= 16)) {\n LetterDesignator = 'Q';\n }\n else if ((16 > lat) && (lat >= 8)) {\n LetterDesignator = 'P';\n }\n else if ((8 > lat) && (lat >= 0)) {\n LetterDesignator = 'N';\n }\n else if ((0 > lat) && (lat >= -8)) {\n LetterDesignator = 'M';\n }\n else if ((-8 > lat) && (lat >= -16)) {\n LetterDesignator = 'L';\n }\n else if ((-16 > lat) && (lat >= -24)) {\n LetterDesignator = 'K';\n }\n else if ((-24 > lat) && (lat >= -32)) {\n LetterDesignator = 'J';\n }\n else if ((-32 > lat) && (lat >= -40)) {\n LetterDesignator = 'H';\n }\n else if ((-40 > lat) && (lat >= -48)) {\n LetterDesignator = 'G';\n }\n else if ((-48 > lat) && (lat >= -56)) {\n LetterDesignator = 'F';\n }\n else if ((-56 > lat) && (lat >= -64)) {\n LetterDesignator = 'E';\n }\n else if ((-64 > lat) && (lat >= -72)) {\n LetterDesignator = 'D';\n }\n else if ((-72 > lat) && (lat >= -80)) {\n LetterDesignator = 'C';\n }\n return LetterDesignator;\n}\n\n/**\n * Encodes a UTM location as MGRS string.\n *\n * @private\n * @param {object} utm An object literal with easting, northing,\n * zoneLetter, zoneNumber\n * @param {number} accuracy Accuracy in digits (1-5).\n * @return {string} MGRS string for the given UTM location.\n */\nfunction encode(utm, accuracy) {\n // prepend with leading zeroes\n var seasting = \"00000\" + utm.easting,\n snorthing = \"00000\" + utm.northing;\n\n return utm.zoneNumber + utm.zoneLetter + get100kID(utm.easting, utm.northing, utm.zoneNumber) + seasting.substr(seasting.length - 5, accuracy) + snorthing.substr(snorthing.length - 5, accuracy);\n}\n\n/**\n * Get the two letter 100k designator for a given UTM easting,\n * northing and zone number value.\n *\n * @private\n * @param {number} easting\n * @param {number} northing\n * @param {number} zoneNumber\n * @return the two letter 100k designator for the given UTM location.\n */\nfunction get100kID(easting, northing, zoneNumber) {\n var setParm = get100kSetForZone(zoneNumber);\n var setColumn = Math.floor(easting / 100000);\n var setRow = Math.floor(northing / 100000) % 20;\n return getLetter100kID(setColumn, setRow, setParm);\n}\n\n/**\n * Given a UTM zone number, figure out the MGRS 100K set it is in.\n *\n * @private\n * @param {number} i An UTM zone number.\n * @return {number} the 100k set the UTM zone is in.\n */\nfunction get100kSetForZone(i) {\n var setParm = i % NUM_100K_SETS;\n if (setParm === 0) {\n setParm = NUM_100K_SETS;\n }\n\n return setParm;\n}\n\n/**\n * Get the two-letter MGRS 100k designator given information\n * translated from the UTM northing, easting and zone number.\n *\n * @private\n * @param {number} column the column index as it relates to the MGRS\n * 100k set spreadsheet, created from the UTM easting.\n * Values are 1-8.\n * @param {number} row the row index as it relates to the MGRS 100k set\n * spreadsheet, created from the UTM northing value. Values\n * are from 0-19.\n * @param {number} parm the set block, as it relates to the MGRS 100k set\n * spreadsheet, created from the UTM zone. Values are from\n * 1-60.\n * @return two letter MGRS 100k code.\n */\nfunction getLetter100kID(column, row, parm) {\n // colOrigin and rowOrigin are the letters at the origin of the set\n var index = parm - 1;\n var colOrigin = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(index);\n var rowOrigin = SET_ORIGIN_ROW_LETTERS.charCodeAt(index);\n\n // colInt and rowInt are the letters to build to return\n var colInt = colOrigin + column - 1;\n var rowInt = rowOrigin + row;\n var rollover = false;\n\n if (colInt > Z) {\n colInt = colInt - Z + A - 1;\n rollover = true;\n }\n\n if (colInt === I || (colOrigin < I && colInt > I) || ((colInt > I || colOrigin < I) && rollover)) {\n colInt++;\n }\n\n if (colInt === O || (colOrigin < O && colInt > O) || ((colInt > O || colOrigin < O) && rollover)) {\n colInt++;\n\n if (colInt === I) {\n colInt++;\n }\n }\n\n if (colInt > Z) {\n colInt = colInt - Z + A - 1;\n }\n\n if (rowInt > V) {\n rowInt = rowInt - V + A - 1;\n rollover = true;\n }\n else {\n rollover = false;\n }\n\n if (((rowInt === I) || ((rowOrigin < I) && (rowInt > I))) || (((rowInt > I) || (rowOrigin < I)) && rollover)) {\n rowInt++;\n }\n\n if (((rowInt === O) || ((rowOrigin < O) && (rowInt > O))) || (((rowInt > O) || (rowOrigin < O)) && rollover)) {\n rowInt++;\n\n if (rowInt === I) {\n rowInt++;\n }\n }\n\n if (rowInt > V) {\n rowInt = rowInt - V + A - 1;\n }\n\n var twoLetter = String.fromCharCode(colInt) + String.fromCharCode(rowInt);\n return twoLetter;\n}\n\n/**\n * Decode the UTM parameters from a MGRS string.\n *\n * @private\n * @param {string} mgrsString an UPPERCASE coordinate string is expected.\n * @return {object} An object literal with easting, northing, zoneLetter,\n * zoneNumber and accuracy (in meters) properties.\n */\nfunction decode(mgrsString) {\n\n if (mgrsString && mgrsString.length === 0) {\n throw (\"MGRSPoint coverting from nothing\");\n }\n\n var length = mgrsString.length;\n\n var hunK = null;\n var sb = \"\";\n var testChar;\n var i = 0;\n\n // get Zone number\n while (!(/[A-Z]/).test(testChar = mgrsString.charAt(i))) {\n if (i >= 2) {\n throw (\"MGRSPoint bad conversion from: \" + mgrsString);\n }\n sb += testChar;\n i++;\n }\n\n var zoneNumber = parseInt(sb, 10);\n\n if (i === 0 || i + 3 > length) {\n // A good MGRS string has to be 4-5 digits long,\n // ##AAA/#AAA at least.\n throw (\"MGRSPoint bad conversion from: \" + mgrsString);\n }\n\n var zoneLetter = mgrsString.charAt(i++);\n\n // Should we check the zone letter here? Why not.\n if (zoneLetter <= 'A' || zoneLetter === 'B' || zoneLetter === 'Y' || zoneLetter >= 'Z' || zoneLetter === 'I' || zoneLetter === 'O') {\n throw (\"MGRSPoint zone letter \" + zoneLetter + \" not handled: \" + mgrsString);\n }\n\n hunK = mgrsString.substring(i, i += 2);\n\n var set = get100kSetForZone(zoneNumber);\n\n var east100k = getEastingFromChar(hunK.charAt(0), set);\n var north100k = getNorthingFromChar(hunK.charAt(1), set);\n\n // We have a bug where the northing may be 2000000 too low.\n // How\n // do we know when to roll over?\n\n while (north100k < getMinNorthing(zoneLetter)) {\n north100k += 2000000;\n }\n\n // calculate the char index for easting/northing separator\n var remainder = length - i;\n\n if (remainder % 2 !== 0) {\n throw (\"MGRSPoint has to have an even number \\nof digits after the zone letter and two 100km letters - front \\nhalf for easting meters, second half for \\nnorthing meters\" + mgrsString);\n }\n\n var sep = remainder / 2;\n\n var sepEasting = 0.0;\n var sepNorthing = 0.0;\n var accuracyBonus, sepEastingString, sepNorthingString, easting, northing;\n if (sep > 0) {\n accuracyBonus = 100000.0 / Math.pow(10, sep);\n sepEastingString = mgrsString.substring(i, i + sep);\n sepEasting = parseFloat(sepEastingString) * accuracyBonus;\n sepNorthingString = mgrsString.substring(i + sep);\n sepNorthing = parseFloat(sepNorthingString) * accuracyBonus;\n }\n\n easting = sepEasting + east100k;\n northing = sepNorthing + north100k;\n\n return {\n easting: easting,\n northing: northing,\n zoneLetter: zoneLetter,\n zoneNumber: zoneNumber,\n accuracy: accuracyBonus\n };\n}\n\n/**\n * Given the first letter from a two-letter MGRS 100k zone, and given the\n * MGRS table set for the zone number, figure out the easting value that\n * should be added to the other, secondary easting value.\n *\n * @private\n * @param {char} e The first letter from a two-letter MGRS 100´k zone.\n * @param {number} set The MGRS table set for the zone number.\n * @return {number} The easting value for the given letter and set.\n */\nfunction getEastingFromChar(e, set) {\n // colOrigin is the letter at the origin of the set for the\n // column\n var curCol = SET_ORIGIN_COLUMN_LETTERS.charCodeAt(set - 1);\n var eastingValue = 100000.0;\n var rewindMarker = false;\n\n while (curCol !== e.charCodeAt(0)) {\n curCol++;\n if (curCol === I) {\n curCol++;\n }\n if (curCol === O) {\n curCol++;\n }\n if (curCol > Z) {\n if (rewindMarker) {\n throw (\"Bad character: \" + e);\n }\n curCol = A;\n rewindMarker = true;\n }\n eastingValue += 100000.0;\n }\n\n return eastingValue;\n}\n\n/**\n * Given the second letter from a two-letter MGRS 100k zone, and given the\n * MGRS table set for the zone number, figure out the northing value that\n * should be added to the other, secondary northing value. You have to\n * remember that Northings are determined from the equator, and the vertical\n * cycle of letters mean a 2000000 additional northing meters. This happens\n * approx. every 18 degrees of latitude. This method does *NOT* count any\n * additional northings. You have to figure out how many 2000000 meters need\n * to be added for the zone letter of the MGRS coordinate.\n *\n * @private\n * @param {char} n Second letter of the MGRS 100k zone\n * @param {number} set The MGRS table set number, which is dependent on the\n * UTM zone number.\n * @return {number} The northing value for the given letter and set.\n */\nfunction getNorthingFromChar(n, set) {\n\n if (n > 'V') {\n throw (\"MGRSPoint given invalid Northing \" + n);\n }\n\n // rowOrigin is the letter at the origin of the set for the\n // column\n var curRow = SET_ORIGIN_ROW_LETTERS.charCodeAt(set - 1);\n var northingValue = 0.0;\n var rewindMarker = false;\n\n while (curRow !== n.charCodeAt(0)) {\n curRow++;\n if (curRow === I) {\n curRow++;\n }\n if (curRow === O) {\n curRow++;\n }\n // fixing a bug making whole application hang in this loop\n // when 'n' is a wrong character\n if (curRow > V) {\n if (rewindMarker) { // making sure that this loop ends\n throw (\"Bad character: \" + n);\n }\n curRow = A;\n rewindMarker = true;\n }\n northingValue += 100000.0;\n }\n\n return northingValue;\n}\n\n/**\n * The function getMinNorthing returns the minimum northing value of a MGRS\n * zone.\n *\n * Ported from Geotrans' c Lattitude_Band_Value structure table.\n *\n * @private\n * @param {char} zoneLetter The MGRS zone to get the min northing for.\n * @return {number}\n */\nfunction getMinNorthing(zoneLetter) {\n var northing;\n switch (zoneLetter) {\n case 'C':\n northing = 1100000.0;\n break;\n case 'D':\n northing = 2000000.0;\n break;\n case 'E':\n northing = 2800000.0;\n break;\n case 'F':\n northing = 3700000.0;\n break;\n case 'G':\n northing = 4600000.0;\n break;\n case 'H':\n northing = 5500000.0;\n break;\n case 'J':\n northing = 6400000.0;\n break;\n case 'K':\n northing = 7300000.0;\n break;\n case 'L':\n northing = 8200000.0;\n break;\n case 'M':\n northing = 9100000.0;\n break;\n case 'N':\n northing = 0.0;\n break;\n case 'P':\n northing = 800000.0;\n break;\n case 'Q':\n northing = 1700000.0;\n break;\n case 'R':\n northing = 2600000.0;\n break;\n case 'S':\n northing = 3500000.0;\n break;\n case 'T':\n northing = 4400000.0;\n break;\n case 'U':\n northing = 5300000.0;\n break;\n case 'V':\n northing = 6200000.0;\n break;\n case 'W':\n northing = 7000000.0;\n break;\n case 'X':\n northing = 7900000.0;\n break;\n default:\n northing = -1.0;\n }\n if (northing >= 0.0) {\n return northing;\n }\n else {\n throw (\"Invalid zone letter: \" + zoneLetter);\n }\n\n}\n","import {toPoint, forward} from 'mgrs';\n\nfunction Point(x, y, z) {\n if (!(this instanceof Point)) {\n return new Point(x, y, z);\n }\n if (Array.isArray(x)) {\n this.x = x[0];\n this.y = x[1];\n this.z = x[2] || 0.0;\n } else if(typeof x === 'object') {\n this.x = x.x;\n this.y = x.y;\n this.z = x.z || 0.0;\n } else if (typeof x === 'string' && typeof y === 'undefined') {\n var coords = x.split(',');\n this.x = parseFloat(coords[0], 10);\n this.y = parseFloat(coords[1], 10);\n this.z = parseFloat(coords[2], 10) || 0.0;\n } else {\n this.x = x;\n this.y = y;\n this.z = z || 0.0;\n }\n console.warn('proj4.Point will be removed in version 3, use proj4.toPoint');\n}\n\nPoint.fromMGRS = function(mgrsStr) {\n return new Point(toPoint(mgrsStr));\n};\nPoint.prototype.toMGRS = function(accuracy) {\n return forward([this.x, this.y], accuracy);\n};\nexport default Point;\n","var C00 = 1;\nvar C02 = 0.25;\nvar C04 = 0.046875;\nvar C06 = 0.01953125;\nvar C08 = 0.01068115234375;\nvar C22 = 0.75;\nvar C44 = 0.46875;\nvar C46 = 0.01302083333333333333;\nvar C48 = 0.00712076822916666666;\nvar C66 = 0.36458333333333333333;\nvar C68 = 0.00569661458333333333;\nvar C88 = 0.3076171875;\n\nexport default function(es) {\n var en = [];\n en[0] = C00 - es * (C02 + es * (C04 + es * (C06 + es * C08)));\n en[1] = es * (C22 - es * (C04 + es * (C06 + es * C08)));\n var t = es * es;\n en[2] = t * (C44 - es * (C46 + es * C48));\n t *= es;\n en[3] = t * (C66 - es * C68);\n en[4] = t * es * C88;\n return en;\n}","export default function(phi, sphi, cphi, en) {\n cphi *= sphi;\n sphi *= sphi;\n return (en[0] * phi - cphi * (en[1] + sphi * (en[2] + sphi * (en[3] + sphi * en[4]))));\n}","import pj_mlfn from \"./pj_mlfn\";\nimport {EPSLN} from '../constants/values';\n\nvar MAX_ITER = 20;\n\nexport default function(arg, es, en) {\n var k = 1 / (1 - es);\n var phi = arg;\n for (var i = MAX_ITER; i; --i) { /* rarely goes over 2 iterations */\n var s = Math.sin(phi);\n var t = 1 - es * s * s;\n //t = this.pj_mlfn(phi, s, Math.cos(phi), en) - arg;\n //phi -= t * (t * Math.sqrt(t)) * k;\n t = (pj_mlfn(phi, s, Math.cos(phi), en) - arg) * (t * Math.sqrt(t)) * k;\n phi -= t;\n if (Math.abs(t) < EPSLN) {\n return phi;\n }\n }\n //..reportError(\"cass:pj_inv_mlfn: Convergence error\");\n return phi;\n}\n","// Heavily based on this tmerc projection implementation\n// https://github.com/mbloch/mapshaper-proj/blob/master/src/projections/tmerc.js\n\nimport pj_enfn from '../common/pj_enfn';\nimport pj_mlfn from '../common/pj_mlfn';\nimport pj_inv_mlfn from '../common/pj_inv_mlfn';\nimport adjust_lon from '../common/adjust_lon';\n\nimport {EPSLN, HALF_PI} from '../constants/values';\nimport sign from '../common/sign';\n\nexport function init() {\n this.x0 = this.x0 !== undefined ? this.x0 : 0;\n this.y0 = this.y0 !== undefined ? this.y0 : 0;\n this.long0 = this.long0 !== undefined ? this.long0 : 0;\n this.lat0 = this.lat0 !== undefined ? this.lat0 : 0;\n\n if (this.es) {\n this.en = pj_enfn(this.es);\n this.ml0 = pj_mlfn(this.lat0, Math.sin(this.lat0), Math.cos(this.lat0), this.en);\n }\n}\n\n/**\n Transverse Mercator Forward - long/lat to x/y\n long/lat in radians\n */\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n\n var delta_lon = adjust_lon(lon - this.long0);\n var con;\n var x, y;\n var sin_phi = Math.sin(lat);\n var cos_phi = Math.cos(lat);\n\n if (!this.es) {\n var b = cos_phi * Math.sin(delta_lon);\n\n if ((Math.abs(Math.abs(b) - 1)) < EPSLN) {\n return (93);\n }\n else {\n x = 0.5 * this.a * this.k0 * Math.log((1 + b) / (1 - b)) + this.x0;\n y = cos_phi * Math.cos(delta_lon) / Math.sqrt(1 - Math.pow(b, 2));\n b = Math.abs(y);\n\n if (b >= 1) {\n if ((b - 1) > EPSLN) {\n return (93);\n }\n else {\n y = 0;\n }\n }\n else {\n y = Math.acos(y);\n }\n\n if (lat < 0) {\n y = -y;\n }\n\n y = this.a * this.k0 * (y - this.lat0) + this.y0;\n }\n }\n else {\n var al = cos_phi * delta_lon;\n var als = Math.pow(al, 2);\n var c = this.ep2 * Math.pow(cos_phi, 2);\n var cs = Math.pow(c, 2);\n var tq = Math.abs(cos_phi) > EPSLN ? Math.tan(lat) : 0;\n var t = Math.pow(tq, 2);\n var ts = Math.pow(t, 2);\n con = 1 - this.es * Math.pow(sin_phi, 2);\n al = al / Math.sqrt(con);\n var ml = pj_mlfn(lat, sin_phi, cos_phi, this.en);\n\n x = this.a * (this.k0 * al * (1 +\n als / 6 * (1 - t + c +\n als / 20 * (5 - 18 * t + ts + 14 * c - 58 * t * c +\n als / 42 * (61 + 179 * ts - ts * t - 479 * t))))) +\n this.x0;\n\n y = this.a * (this.k0 * (ml - this.ml0 +\n sin_phi * delta_lon * al / 2 * (1 +\n als / 12 * (5 - t + 9 * c + 4 * cs +\n als / 30 * (61 + ts - 58 * t + 270 * c - 330 * t * c +\n als / 56 * (1385 + 543 * ts - ts * t - 3111 * t)))))) +\n this.y0;\n }\n\n p.x = x;\n p.y = y;\n\n return p;\n}\n\n/**\n Transverse Mercator Inverse - x/y to long/lat\n */\nexport function inverse(p) {\n var con, phi;\n var lat, lon;\n var x = (p.x - this.x0) * (1 / this.a);\n var y = (p.y - this.y0) * (1 / this.a);\n\n if (!this.es) {\n var f = Math.exp(x / this.k0);\n var g = 0.5 * (f - 1 / f);\n var temp = this.lat0 + y / this.k0;\n var h = Math.cos(temp);\n con = Math.sqrt((1 - Math.pow(h, 2)) / (1 + Math.pow(g, 2)));\n lat = Math.asin(con);\n\n if (y < 0) {\n lat = -lat;\n }\n\n if ((g === 0) && (h === 0)) {\n lon = 0;\n }\n else {\n lon = adjust_lon(Math.atan2(g, h) + this.long0);\n }\n }\n else { // ellipsoidal form\n con = this.ml0 + y / this.k0;\n phi = pj_inv_mlfn(con, this.es, this.en);\n\n if (Math.abs(phi) < HALF_PI) {\n var sin_phi = Math.sin(phi);\n var cos_phi = Math.cos(phi);\n var tan_phi = Math.abs(cos_phi) > EPSLN ? Math.tan(phi) : 0;\n var c = this.ep2 * Math.pow(cos_phi, 2);\n var cs = Math.pow(c, 2);\n var t = Math.pow(tan_phi, 2);\n var ts = Math.pow(t, 2);\n con = 1 - this.es * Math.pow(sin_phi, 2);\n var d = x * Math.sqrt(con) / this.k0;\n var ds = Math.pow(d, 2);\n con = con * tan_phi;\n\n lat = phi - (con * ds / (1 - this.es)) * 0.5 * (1 -\n ds / 12 * (5 + 3 * t - 9 * c * t + c - 4 * cs -\n ds / 30 * (61 + 90 * t - 252 * c * t + 45 * ts + 46 * c -\n ds / 56 * (1385 + 3633 * t + 4095 * ts + 1574 * ts * t))));\n\n lon = adjust_lon(this.long0 + (d * (1 -\n ds / 6 * (1 + 2 * t + c -\n ds / 20 * (5 + 28 * t + 24 * ts + 8 * c * t + 6 * c -\n ds / 42 * (61 + 662 * t + 1320 * ts + 720 * ts * t)))) / cos_phi));\n }\n else {\n lat = HALF_PI * sign(y);\n lon = 0;\n }\n }\n\n p.x = lon;\n p.y = lat;\n\n return p;\n}\n\nexport var names = [\"Fast_Transverse_Mercator\", \"Fast Transverse Mercator\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","export default function(x) {\n var r = Math.exp(x);\n r = (r - 1 / r) / 2;\n return r;\n}","export default function(x, y) {\n x = Math.abs(x);\n y = Math.abs(y);\n var a = Math.max(x, y);\n var b = Math.min(x, y) / (a ? a : 1);\n\n return a * Math.sqrt(1 + Math.pow(b, 2));\n}\n","export default function(x) {\n var y = 1 + x;\n var z = y - 1;\n\n return z === 0 ? x : x * Math.log(y) / z;\n}\n","import hypot from './hypot';\nimport log1py from './log1py';\n\nexport default function(x) {\n var y = Math.abs(x);\n y = log1py(y * (1 + y / (hypot(1, y) + 1)));\n\n return x < 0 ? -y : y;\n}\n","export default function(pp, B) {\n var cos_2B = 2 * Math.cos(2 * B);\n var i = pp.length - 1;\n var h1 = pp[i];\n var h2 = 0;\n var h;\n\n while (--i >= 0) {\n h = -h2 + cos_2B * h1 + pp[i];\n h2 = h1;\n h1 = h;\n }\n\n return (B + h * Math.sin(2 * B));\n}\n","export default function(pp, arg_r) {\n var r = 2 * Math.cos(arg_r);\n var i = pp.length - 1;\n var hr1 = pp[i];\n var hr2 = 0;\n var hr;\n\n while (--i >= 0) {\n hr = -hr2 + r * hr1 + pp[i];\n hr2 = hr1;\n hr1 = hr;\n }\n\n return Math.sin(arg_r) * hr;\n}\n","export default function(x) {\n var r = Math.exp(x);\n r = (r + 1 / r) / 2;\n return r;\n}","import sinh from './sinh';\nimport cosh from './cosh';\n\nexport default function(pp, arg_r, arg_i) {\n var sin_arg_r = Math.sin(arg_r);\n var cos_arg_r = Math.cos(arg_r);\n var sinh_arg_i = sinh(arg_i);\n var cosh_arg_i = cosh(arg_i);\n var r = 2 * cos_arg_r * cosh_arg_i;\n var i = -2 * sin_arg_r * sinh_arg_i;\n var j = pp.length - 1;\n var hr = pp[j];\n var hi1 = 0;\n var hr1 = 0;\n var hi = 0;\n var hr2;\n var hi2;\n\n while (--j >= 0) {\n hr2 = hr1;\n hi2 = hi1;\n hr1 = hr;\n hi1 = hi;\n hr = -hr2 + r * hr1 - i * hi1 + pp[j];\n hi = -hi2 + i * hr1 + r * hi1;\n }\n\n r = sin_arg_r * cosh_arg_i;\n i = cos_arg_r * sinh_arg_i;\n\n return [r * hr - i * hi, r * hi + i * hr];\n}\n","// Heavily based on this etmerc projection implementation\n// https://github.com/mbloch/mapshaper-proj/blob/master/src/projections/etmerc.js\n\nimport tmerc from '../projections/tmerc';\nimport sinh from '../common/sinh';\nimport hypot from '../common/hypot';\nimport asinhy from '../common/asinhy';\nimport gatg from '../common/gatg';\nimport clens from '../common/clens';\nimport clens_cmplx from '../common/clens_cmplx';\nimport adjust_lon from '../common/adjust_lon';\n\nexport function init() {\n if (!this.approx && (isNaN(this.es) || this.es <= 0)) {\n throw new Error('Incorrect elliptical usage. Try using the +approx option in the proj string, or PROJECTION[\"Fast_Transverse_Mercator\"] in the WKT.');\n }\n if (this.approx) {\n // When '+approx' is set, use tmerc instead\n tmerc.init.apply(this);\n this.forward = tmerc.forward;\n this.inverse = tmerc.inverse;\n }\n\n this.x0 = this.x0 !== undefined ? this.x0 : 0;\n this.y0 = this.y0 !== undefined ? this.y0 : 0;\n this.long0 = this.long0 !== undefined ? this.long0 : 0;\n this.lat0 = this.lat0 !== undefined ? this.lat0 : 0;\n\n this.cgb = [];\n this.cbg = [];\n this.utg = [];\n this.gtu = [];\n\n var f = this.es / (1 + Math.sqrt(1 - this.es));\n var n = f / (2 - f);\n var np = n;\n\n this.cgb[0] = n * (2 + n * (-2 / 3 + n * (-2 + n * (116 / 45 + n * (26 / 45 + n * (-2854 / 675 ))))));\n this.cbg[0] = n * (-2 + n * ( 2 / 3 + n * ( 4 / 3 + n * (-82 / 45 + n * (32 / 45 + n * (4642 / 4725))))));\n\n np = np * n;\n this.cgb[1] = np * (7 / 3 + n * (-8 / 5 + n * (-227 / 45 + n * (2704 / 315 + n * (2323 / 945)))));\n this.cbg[1] = np * (5 / 3 + n * (-16 / 15 + n * ( -13 / 9 + n * (904 / 315 + n * (-1522 / 945)))));\n\n np = np * n;\n this.cgb[2] = np * (56 / 15 + n * (-136 / 35 + n * (-1262 / 105 + n * (73814 / 2835))));\n this.cbg[2] = np * (-26 / 15 + n * (34 / 21 + n * (8 / 5 + n * (-12686 / 2835))));\n\n np = np * n;\n this.cgb[3] = np * (4279 / 630 + n * (-332 / 35 + n * (-399572 / 14175)));\n this.cbg[3] = np * (1237 / 630 + n * (-12 / 5 + n * ( -24832 / 14175)));\n\n np = np * n;\n this.cgb[4] = np * (4174 / 315 + n * (-144838 / 6237));\n this.cbg[4] = np * (-734 / 315 + n * (109598 / 31185));\n\n np = np * n;\n this.cgb[5] = np * (601676 / 22275);\n this.cbg[5] = np * (444337 / 155925);\n\n np = Math.pow(n, 2);\n this.Qn = this.k0 / (1 + n) * (1 + np * (1 / 4 + np * (1 / 64 + np / 256)));\n\n this.utg[0] = n * (-0.5 + n * ( 2 / 3 + n * (-37 / 96 + n * ( 1 / 360 + n * (81 / 512 + n * (-96199 / 604800))))));\n this.gtu[0] = n * (0.5 + n * (-2 / 3 + n * (5 / 16 + n * (41 / 180 + n * (-127 / 288 + n * (7891 / 37800))))));\n\n this.utg[1] = np * (-1 / 48 + n * (-1 / 15 + n * (437 / 1440 + n * (-46 / 105 + n * (1118711 / 3870720)))));\n this.gtu[1] = np * (13 / 48 + n * (-3 / 5 + n * (557 / 1440 + n * (281 / 630 + n * (-1983433 / 1935360)))));\n\n np = np * n;\n this.utg[2] = np * (-17 / 480 + n * (37 / 840 + n * (209 / 4480 + n * (-5569 / 90720 ))));\n this.gtu[2] = np * (61 / 240 + n * (-103 / 140 + n * (15061 / 26880 + n * (167603 / 181440))));\n\n np = np * n;\n this.utg[3] = np * (-4397 / 161280 + n * (11 / 504 + n * (830251 / 7257600)));\n this.gtu[3] = np * (49561 / 161280 + n * (-179 / 168 + n * (6601661 / 7257600)));\n\n np = np * n;\n this.utg[4] = np * (-4583 / 161280 + n * (108847 / 3991680));\n this.gtu[4] = np * (34729 / 80640 + n * (-3418889 / 1995840));\n\n np = np * n;\n this.utg[5] = np * (-20648693 / 638668800);\n this.gtu[5] = np * (212378941 / 319334400);\n\n var Z = gatg(this.cbg, this.lat0);\n this.Zb = -this.Qn * (Z + clens(this.gtu, 2 * Z));\n}\n\nexport function forward(p) {\n var Ce = adjust_lon(p.x - this.long0);\n var Cn = p.y;\n\n Cn = gatg(this.cbg, Cn);\n var sin_Cn = Math.sin(Cn);\n var cos_Cn = Math.cos(Cn);\n var sin_Ce = Math.sin(Ce);\n var cos_Ce = Math.cos(Ce);\n\n Cn = Math.atan2(sin_Cn, cos_Ce * cos_Cn);\n Ce = Math.atan2(sin_Ce * cos_Cn, hypot(sin_Cn, cos_Cn * cos_Ce));\n Ce = asinhy(Math.tan(Ce));\n\n var tmp = clens_cmplx(this.gtu, 2 * Cn, 2 * Ce);\n\n Cn = Cn + tmp[0];\n Ce = Ce + tmp[1];\n\n var x;\n var y;\n\n if (Math.abs(Ce) <= 2.623395162778) {\n x = this.a * (this.Qn * Ce) + this.x0;\n y = this.a * (this.Qn * Cn + this.Zb) + this.y0;\n }\n else {\n x = Infinity;\n y = Infinity;\n }\n\n p.x = x;\n p.y = y;\n\n return p;\n}\n\nexport function inverse(p) {\n var Ce = (p.x - this.x0) * (1 / this.a);\n var Cn = (p.y - this.y0) * (1 / this.a);\n\n Cn = (Cn - this.Zb) / this.Qn;\n Ce = Ce / this.Qn;\n\n var lon;\n var lat;\n\n if (Math.abs(Ce) <= 2.623395162778) {\n var tmp = clens_cmplx(this.utg, 2 * Cn, 2 * Ce);\n\n Cn = Cn + tmp[0];\n Ce = Ce + tmp[1];\n Ce = Math.atan(sinh(Ce));\n\n var sin_Cn = Math.sin(Cn);\n var cos_Cn = Math.cos(Cn);\n var sin_Ce = Math.sin(Ce);\n var cos_Ce = Math.cos(Ce);\n\n Cn = Math.atan2(sin_Cn * cos_Ce, hypot(sin_Ce, cos_Ce * cos_Cn));\n Ce = Math.atan2(sin_Ce, cos_Ce * cos_Cn);\n\n lon = adjust_lon(Ce + this.long0);\n lat = gatg(this.cgb, Cn);\n }\n else {\n lon = Infinity;\n lat = Infinity;\n }\n\n p.x = lon;\n p.y = lat;\n\n return p;\n}\n\nexport var names = [\"Extended_Transverse_Mercator\", \"Extended Transverse Mercator\", \"etmerc\", \"Transverse_Mercator\", \"Transverse Mercator\", \"tmerc\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from './adjust_lon';\n\nexport default function(zone, lon) {\n if (zone === undefined) {\n zone = Math.floor((adjust_lon(lon) + Math.PI) * 30 / Math.PI) + 1;\n\n if (zone < 0) {\n return 0;\n } else if (zone > 60) {\n return 60;\n }\n }\n return zone;\n}\n","import adjust_zone from '../common/adjust_zone';\nimport etmerc from './etmerc';\nexport var dependsOn = 'etmerc';\nimport {D2R} from '../constants/values';\n\n\nexport function init() {\n var zone = adjust_zone(this.zone, this.long0);\n if (zone === undefined) {\n throw new Error('unknown utm zone');\n }\n this.lat0 = 0;\n this.long0 = ((6 * Math.abs(zone)) - 183) * D2R;\n this.x0 = 500000;\n this.y0 = this.utmSouth ? 10000000 : 0;\n this.k0 = 0.9996;\n\n etmerc.init.apply(this);\n this.forward = etmerc.forward;\n this.inverse = etmerc.inverse;\n}\n\nexport var names = [\"Universal Transverse Mercator System\", \"utm\"];\nexport default {\n init: init,\n names: names,\n dependsOn: dependsOn\n};\n","export default function(esinp, exp) {\n return (Math.pow((1 - esinp) / (1 + esinp), exp));\n}","import srat from '../common/srat';\nvar MAX_ITER = 20;\nimport {HALF_PI, FORTPI} from '../constants/values';\n\nexport function init() {\n var sphi = Math.sin(this.lat0);\n var cphi = Math.cos(this.lat0);\n cphi *= cphi;\n this.rc = Math.sqrt(1 - this.es) / (1 - this.es * sphi * sphi);\n this.C = Math.sqrt(1 + this.es * cphi * cphi / (1 - this.es));\n this.phic0 = Math.asin(sphi / this.C);\n this.ratexp = 0.5 * this.C * this.e;\n this.K = Math.tan(0.5 * this.phic0 + FORTPI) / (Math.pow(Math.tan(0.5 * this.lat0 + FORTPI), this.C) * srat(this.e * sphi, this.ratexp));\n}\n\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n\n p.y = 2 * Math.atan(this.K * Math.pow(Math.tan(0.5 * lat + FORTPI), this.C) * srat(this.e * Math.sin(lat), this.ratexp)) - HALF_PI;\n p.x = this.C * lon;\n return p;\n}\n\nexport function inverse(p) {\n var DEL_TOL = 1e-14;\n var lon = p.x / this.C;\n var lat = p.y;\n var num = Math.pow(Math.tan(0.5 * lat + FORTPI) / this.K, 1 / this.C);\n for (var i = MAX_ITER; i > 0; --i) {\n lat = 2 * Math.atan(num * srat(this.e * Math.sin(p.y), - 0.5 * this.e)) - HALF_PI;\n if (Math.abs(lat - p.y) < DEL_TOL) {\n break;\n }\n p.y = lat;\n }\n /* convergence failed */\n if (!i) {\n return null;\n }\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"gauss\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import gauss from './gauss';\nimport adjust_lon from '../common/adjust_lon';\n\nexport function init() {\n gauss.init.apply(this);\n if (!this.rc) {\n return;\n }\n this.sinc0 = Math.sin(this.phic0);\n this.cosc0 = Math.cos(this.phic0);\n this.R2 = 2 * this.rc;\n if (!this.title) {\n this.title = \"Oblique Stereographic Alternative\";\n }\n}\n\nexport function forward(p) {\n var sinc, cosc, cosl, k;\n p.x = adjust_lon(p.x - this.long0);\n gauss.forward.apply(this, [p]);\n sinc = Math.sin(p.y);\n cosc = Math.cos(p.y);\n cosl = Math.cos(p.x);\n k = this.k0 * this.R2 / (1 + this.sinc0 * sinc + this.cosc0 * cosc * cosl);\n p.x = k * cosc * Math.sin(p.x);\n p.y = k * (this.cosc0 * sinc - this.sinc0 * cosc * cosl);\n p.x = this.a * p.x + this.x0;\n p.y = this.a * p.y + this.y0;\n return p;\n}\n\nexport function inverse(p) {\n var sinc, cosc, lon, lat, rho;\n p.x = (p.x - this.x0) / this.a;\n p.y = (p.y - this.y0) / this.a;\n\n p.x /= this.k0;\n p.y /= this.k0;\n if ((rho = Math.sqrt(p.x * p.x + p.y * p.y))) {\n var c = 2 * Math.atan2(rho, this.R2);\n sinc = Math.sin(c);\n cosc = Math.cos(c);\n lat = Math.asin(cosc * this.sinc0 + p.y * sinc * this.cosc0 / rho);\n lon = Math.atan2(p.x * sinc, rho * this.cosc0 * cosc - p.y * this.sinc0 * sinc);\n }\n else {\n lat = this.phic0;\n lon = 0;\n }\n\n p.x = lon;\n p.y = lat;\n gauss.inverse.apply(this, [p]);\n p.x = adjust_lon(p.x + this.long0);\n return p;\n}\n\nexport var names = [\"Stereographic_North_Pole\", \"Oblique_Stereographic\", \"Polar_Stereographic\", \"sterea\",\"Oblique Stereographic Alternative\",\"Double_Stereographic\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import {EPSLN, HALF_PI} from '../constants/values';\n\nimport sign from '../common/sign';\nimport msfnz from '../common/msfnz';\nimport tsfnz from '../common/tsfnz';\nimport phi2z from '../common/phi2z';\nimport adjust_lon from '../common/adjust_lon';\n\nexport function ssfn_(phit, sinphi, eccen) {\n sinphi *= eccen;\n return (Math.tan(0.5 * (HALF_PI + phit)) * Math.pow((1 - sinphi) / (1 + sinphi), 0.5 * eccen));\n}\n\nexport function init() {\n this.coslat0 = Math.cos(this.lat0);\n this.sinlat0 = Math.sin(this.lat0);\n if (this.sphere) {\n if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) {\n this.k0 = 0.5 * (1 + sign(this.lat0) * Math.sin(this.lat_ts));\n }\n }\n else {\n if (Math.abs(this.coslat0) <= EPSLN) {\n if (this.lat0 > 0) {\n //North pole\n //trace('stere:north pole');\n this.con = 1;\n }\n else {\n //South pole\n //trace('stere:south pole');\n this.con = -1;\n }\n }\n this.cons = Math.sqrt(Math.pow(1 + this.e, 1 + this.e) * Math.pow(1 - this.e, 1 - this.e));\n if (this.k0 === 1 && !isNaN(this.lat_ts) && Math.abs(this.coslat0) <= EPSLN) {\n this.k0 = 0.5 * this.cons * msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts)) / tsfnz(this.e, this.con * this.lat_ts, this.con * Math.sin(this.lat_ts));\n }\n this.ms1 = msfnz(this.e, this.sinlat0, this.coslat0);\n this.X0 = 2 * Math.atan(this.ssfn_(this.lat0, this.sinlat0, this.e)) - HALF_PI;\n this.cosX0 = Math.cos(this.X0);\n this.sinX0 = Math.sin(this.X0);\n }\n}\n\n// Stereographic forward equations--mapping lat,long to x,y\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n var sinlat = Math.sin(lat);\n var coslat = Math.cos(lat);\n var A, X, sinX, cosX, ts, rh;\n var dlon = adjust_lon(lon - this.long0);\n\n if (Math.abs(Math.abs(lon - this.long0) - Math.PI) <= EPSLN && Math.abs(lat + this.lat0) <= EPSLN) {\n //case of the origine point\n //trace('stere:this is the origin point');\n p.x = NaN;\n p.y = NaN;\n return p;\n }\n if (this.sphere) {\n //trace('stere:sphere case');\n A = 2 * this.k0 / (1 + this.sinlat0 * sinlat + this.coslat0 * coslat * Math.cos(dlon));\n p.x = this.a * A * coslat * Math.sin(dlon) + this.x0;\n p.y = this.a * A * (this.coslat0 * sinlat - this.sinlat0 * coslat * Math.cos(dlon)) + this.y0;\n return p;\n }\n else {\n X = 2 * Math.atan(this.ssfn_(lat, sinlat, this.e)) - HALF_PI;\n cosX = Math.cos(X);\n sinX = Math.sin(X);\n if (Math.abs(this.coslat0) <= EPSLN) {\n ts = tsfnz(this.e, lat * this.con, this.con * sinlat);\n rh = 2 * this.a * this.k0 * ts / this.cons;\n p.x = this.x0 + rh * Math.sin(lon - this.long0);\n p.y = this.y0 - this.con * rh * Math.cos(lon - this.long0);\n //trace(p.toString());\n return p;\n }\n else if (Math.abs(this.sinlat0) < EPSLN) {\n //Eq\n //trace('stere:equateur');\n A = 2 * this.a * this.k0 / (1 + cosX * Math.cos(dlon));\n p.y = A * sinX;\n }\n else {\n //other case\n //trace('stere:normal case');\n A = 2 * this.a * this.k0 * this.ms1 / (this.cosX0 * (1 + this.sinX0 * sinX + this.cosX0 * cosX * Math.cos(dlon)));\n p.y = A * (this.cosX0 * sinX - this.sinX0 * cosX * Math.cos(dlon)) + this.y0;\n }\n p.x = A * cosX * Math.sin(dlon) + this.x0;\n }\n //trace(p.toString());\n return p;\n}\n\n//* Stereographic inverse equations--mapping x,y to lat/long\nexport function inverse(p) {\n p.x -= this.x0;\n p.y -= this.y0;\n var lon, lat, ts, ce, Chi;\n var rh = Math.sqrt(p.x * p.x + p.y * p.y);\n if (this.sphere) {\n var c = 2 * Math.atan(rh / (2 * this.a * this.k0));\n lon = this.long0;\n lat = this.lat0;\n if (rh <= EPSLN) {\n p.x = lon;\n p.y = lat;\n return p;\n }\n lat = Math.asin(Math.cos(c) * this.sinlat0 + p.y * Math.sin(c) * this.coslat0 / rh);\n if (Math.abs(this.coslat0) < EPSLN) {\n if (this.lat0 > 0) {\n lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));\n }\n else {\n lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));\n }\n }\n else {\n lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(c), rh * this.coslat0 * Math.cos(c) - p.y * this.sinlat0 * Math.sin(c)));\n }\n p.x = lon;\n p.y = lat;\n return p;\n }\n else {\n if (Math.abs(this.coslat0) <= EPSLN) {\n if (rh <= EPSLN) {\n lat = this.lat0;\n lon = this.long0;\n p.x = lon;\n p.y = lat;\n //trace(p.toString());\n return p;\n }\n p.x *= this.con;\n p.y *= this.con;\n ts = rh * this.cons / (2 * this.a * this.k0);\n lat = this.con * phi2z(this.e, ts);\n lon = this.con * adjust_lon(this.con * this.long0 + Math.atan2(p.x, - 1 * p.y));\n }\n else {\n ce = 2 * Math.atan(rh * this.cosX0 / (2 * this.a * this.k0 * this.ms1));\n lon = this.long0;\n if (rh <= EPSLN) {\n Chi = this.X0;\n }\n else {\n Chi = Math.asin(Math.cos(ce) * this.sinX0 + p.y * Math.sin(ce) * this.cosX0 / rh);\n lon = adjust_lon(this.long0 + Math.atan2(p.x * Math.sin(ce), rh * this.cosX0 * Math.cos(ce) - p.y * this.sinX0 * Math.sin(ce)));\n }\n lat = -1 * phi2z(this.e, Math.tan(0.5 * (HALF_PI + Chi)));\n }\n }\n p.x = lon;\n p.y = lat;\n\n //trace(p.toString());\n return p;\n\n}\n\nexport var names = [\"stere\", \"Stereographic_South_Pole\", \"Polar Stereographic (variant B)\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names,\n ssfn_: ssfn_\n};\n","/*\n references:\n Formules et constantes pour le Calcul pour la\n projection cylindrique conforme à axe oblique et pour la transformation entre\n des systèmes de référence.\n http://www.swisstopo.admin.ch/internet/swisstopo/fr/home/topics/survey/sys/refsys/switzerland.parsysrelated1.31216.downloadList.77004.DownloadFile.tmp/swissprojectionfr.pdf\n */\n\nexport function init() {\n var phy0 = this.lat0;\n this.lambda0 = this.long0;\n var sinPhy0 = Math.sin(phy0);\n var semiMajorAxis = this.a;\n var invF = this.rf;\n var flattening = 1 / invF;\n var e2 = 2 * flattening - Math.pow(flattening, 2);\n var e = this.e = Math.sqrt(e2);\n this.R = this.k0 * semiMajorAxis * Math.sqrt(1 - e2) / (1 - e2 * Math.pow(sinPhy0, 2));\n this.alpha = Math.sqrt(1 + e2 / (1 - e2) * Math.pow(Math.cos(phy0), 4));\n this.b0 = Math.asin(sinPhy0 / this.alpha);\n var k1 = Math.log(Math.tan(Math.PI / 4 + this.b0 / 2));\n var k2 = Math.log(Math.tan(Math.PI / 4 + phy0 / 2));\n var k3 = Math.log((1 + e * sinPhy0) / (1 - e * sinPhy0));\n this.K = k1 - this.alpha * k2 + this.alpha * e / 2 * k3;\n}\n\nexport function forward(p) {\n var Sa1 = Math.log(Math.tan(Math.PI / 4 - p.y / 2));\n var Sa2 = this.e / 2 * Math.log((1 + this.e * Math.sin(p.y)) / (1 - this.e * Math.sin(p.y)));\n var S = -this.alpha * (Sa1 + Sa2) + this.K;\n\n // spheric latitude\n var b = 2 * (Math.atan(Math.exp(S)) - Math.PI / 4);\n\n // spheric longitude\n var I = this.alpha * (p.x - this.lambda0);\n\n // psoeudo equatorial rotation\n var rotI = Math.atan(Math.sin(I) / (Math.sin(this.b0) * Math.tan(b) + Math.cos(this.b0) * Math.cos(I)));\n\n var rotB = Math.asin(Math.cos(this.b0) * Math.sin(b) - Math.sin(this.b0) * Math.cos(b) * Math.cos(I));\n\n p.y = this.R / 2 * Math.log((1 + Math.sin(rotB)) / (1 - Math.sin(rotB))) + this.y0;\n p.x = this.R * rotI + this.x0;\n return p;\n}\n\nexport function inverse(p) {\n var Y = p.x - this.x0;\n var X = p.y - this.y0;\n\n var rotI = Y / this.R;\n var rotB = 2 * (Math.atan(Math.exp(X / this.R)) - Math.PI / 4);\n\n var b = Math.asin(Math.cos(this.b0) * Math.sin(rotB) + Math.sin(this.b0) * Math.cos(rotB) * Math.cos(rotI));\n var I = Math.atan(Math.sin(rotI) / (Math.cos(this.b0) * Math.cos(rotI) - Math.sin(this.b0) * Math.tan(rotB)));\n\n var lambda = this.lambda0 + I / this.alpha;\n\n var S = 0;\n var phy = b;\n var prevPhy = -1000;\n var iteration = 0;\n while (Math.abs(phy - prevPhy) > 0.0000001) {\n if (++iteration > 20) {\n //...reportError(\"omercFwdInfinity\");\n return;\n }\n //S = Math.log(Math.tan(Math.PI / 4 + phy / 2));\n S = 1 / this.alpha * (Math.log(Math.tan(Math.PI / 4 + b / 2)) - this.K) + this.e * Math.log(Math.tan(Math.PI / 4 + Math.asin(this.e * Math.sin(phy)) / 2));\n prevPhy = phy;\n phy = 2 * Math.atan(Math.exp(S)) - Math.PI / 2;\n }\n\n p.x = lambda;\n p.y = phy;\n return p;\n}\n\nexport var names = [\"somerc\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import tsfnz from '../common/tsfnz';\nimport adjust_lon from '../common/adjust_lon';\nimport phi2z from '../common/phi2z';\nimport { D2R, EPSLN, HALF_PI, TWO_PI, FORTPI } from '../constants/values';\n\nvar TOL = 1e-7;\n\nfunction isTypeA(P) {\n var typeAProjections = ['Hotine_Oblique_Mercator','Hotine_Oblique_Mercator_Azimuth_Natural_Origin'];\n var projectionName = typeof P.PROJECTION === \"object\" ? Object.keys(P.PROJECTION)[0] : P.PROJECTION;\n \n return 'no_uoff' in P || 'no_off' in P || typeAProjections.indexOf(projectionName) !== -1;\n}\n\n\n/* Initialize the Oblique Mercator projection\n ------------------------------------------*/\nexport function init() { \n var con, com, cosph0, D, F, H, L, sinph0, p, J, gamma = 0,\n gamma0, lamc = 0, lam1 = 0, lam2 = 0, phi1 = 0, phi2 = 0, alpha_c = 0, AB;\n \n // only Type A uses the no_off or no_uoff property\n // https://github.com/OSGeo/proj.4/issues/104\n this.no_off = isTypeA(this);\n this.no_rot = 'no_rot' in this;\n \n var alp = false;\n if (\"alpha\" in this) {\n alp = true;\n }\n\n var gam = false;\n if (\"rectified_grid_angle\" in this) {\n gam = true;\n }\n\n if (alp) {\n alpha_c = this.alpha;\n }\n \n if (gam) {\n gamma = (this.rectified_grid_angle * D2R);\n }\n \n if (alp || gam) {\n lamc = this.longc;\n } else {\n lam1 = this.long1;\n phi1 = this.lat1;\n lam2 = this.long2;\n phi2 = this.lat2;\n \n if (Math.abs(phi1 - phi2) <= TOL || (con = Math.abs(phi1)) <= TOL ||\n Math.abs(con - HALF_PI) <= TOL || Math.abs(Math.abs(this.lat0) - HALF_PI) <= TOL ||\n Math.abs(Math.abs(phi2) - HALF_PI) <= TOL) {\n throw new Error();\n }\n }\n \n var one_es = 1.0 - this.es;\n com = Math.sqrt(one_es);\n \n if (Math.abs(this.lat0) > EPSLN) {\n sinph0 = Math.sin(this.lat0);\n cosph0 = Math.cos(this.lat0);\n con = 1 - this.es * sinph0 * sinph0;\n this.B = cosph0 * cosph0;\n this.B = Math.sqrt(1 + this.es * this.B * this.B / one_es);\n this.A = this.B * this.k0 * com / con;\n D = this.B * com / (cosph0 * Math.sqrt(con));\n F = D * D -1;\n \n if (F <= 0) {\n F = 0;\n } else {\n F = Math.sqrt(F);\n if (this.lat0 < 0) {\n F = -F;\n }\n }\n \n this.E = F += D;\n this.E *= Math.pow(tsfnz(this.e, this.lat0, sinph0), this.B);\n } else {\n this.B = 1 / com;\n this.A = this.k0;\n this.E = D = F = 1;\n }\n \n if (alp || gam) {\n if (alp) {\n gamma0 = Math.asin(Math.sin(alpha_c) / D);\n if (!gam) {\n gamma = alpha_c;\n }\n } else {\n gamma0 = gamma;\n alpha_c = Math.asin(D * Math.sin(gamma0));\n }\n this.lam0 = lamc - Math.asin(0.5 * (F - 1 / F) * Math.tan(gamma0)) / this.B;\n } else {\n H = Math.pow(tsfnz(this.e, phi1, Math.sin(phi1)), this.B);\n L = Math.pow(tsfnz(this.e, phi2, Math.sin(phi2)), this.B);\n F = this.E / H;\n p = (L - H) / (L + H);\n J = this.E * this.E;\n J = (J - L * H) / (J + L * H);\n con = lam1 - lam2;\n \n if (con < -Math.pi) {\n lam2 -=TWO_PI;\n } else if (con > Math.pi) {\n lam2 += TWO_PI;\n }\n \n this.lam0 = adjust_lon(0.5 * (lam1 + lam2) - Math.atan(J * Math.tan(0.5 * this.B * (lam1 - lam2)) / p) / this.B);\n gamma0 = Math.atan(2 * Math.sin(this.B * adjust_lon(lam1 - this.lam0)) / (F - 1 / F));\n gamma = alpha_c = Math.asin(D * Math.sin(gamma0));\n }\n \n this.singam = Math.sin(gamma0);\n this.cosgam = Math.cos(gamma0);\n this.sinrot = Math.sin(gamma);\n this.cosrot = Math.cos(gamma);\n \n this.rB = 1 / this.B;\n this.ArB = this.A * this.rB;\n this.BrA = 1 / this.ArB;\n AB = this.A * this.B;\n \n if (this.no_off) {\n this.u_0 = 0;\n } else {\n this.u_0 = Math.abs(this.ArB * Math.atan(Math.sqrt(D * D - 1) / Math.cos(alpha_c)));\n \n if (this.lat0 < 0) {\n this.u_0 = - this.u_0;\n } \n }\n \n F = 0.5 * gamma0;\n this.v_pole_n = this.ArB * Math.log(Math.tan(FORTPI - F));\n this.v_pole_s = this.ArB * Math.log(Math.tan(FORTPI + F));\n}\n\n\n/* Oblique Mercator forward equations--mapping lat,long to x,y\n ----------------------------------------------------------*/\nexport function forward(p) {\n var coords = {};\n var S, T, U, V, W, temp, u, v;\n p.x = p.x - this.lam0;\n \n if (Math.abs(Math.abs(p.y) - HALF_PI) > EPSLN) {\n W = this.E / Math.pow(tsfnz(this.e, p.y, Math.sin(p.y)), this.B);\n \n temp = 1 / W;\n S = 0.5 * (W - temp);\n T = 0.5 * (W + temp);\n V = Math.sin(this.B * p.x);\n U = (S * this.singam - V * this.cosgam) / T;\n \n if (Math.abs(Math.abs(U) - 1.0) < EPSLN) {\n throw new Error();\n }\n \n v = 0.5 * this.ArB * Math.log((1 - U)/(1 + U));\n temp = Math.cos(this.B * p.x);\n \n if (Math.abs(temp) < TOL) {\n u = this.A * p.x;\n } else {\n u = this.ArB * Math.atan2((S * this.cosgam + V * this.singam), temp);\n } \n } else {\n v = p.y > 0 ? this.v_pole_n : this.v_pole_s;\n u = this.ArB * p.y;\n }\n \n if (this.no_rot) {\n coords.x = u;\n coords.y = v;\n } else {\n u -= this.u_0;\n coords.x = v * this.cosrot + u * this.sinrot;\n coords.y = u * this.cosrot - v * this.sinrot;\n }\n \n coords.x = (this.a * coords.x + this.x0);\n coords.y = (this.a * coords.y + this.y0);\n \n return coords;\n}\n\nexport function inverse(p) {\n var u, v, Qp, Sp, Tp, Vp, Up;\n var coords = {};\n \n p.x = (p.x - this.x0) * (1.0 / this.a);\n p.y = (p.y - this.y0) * (1.0 / this.a);\n\n if (this.no_rot) {\n v = p.y;\n u = p.x;\n } else {\n v = p.x * this.cosrot - p.y * this.sinrot;\n u = p.y * this.cosrot + p.x * this.sinrot + this.u_0;\n }\n \n Qp = Math.exp(-this.BrA * v);\n Sp = 0.5 * (Qp - 1 / Qp);\n Tp = 0.5 * (Qp + 1 / Qp);\n Vp = Math.sin(this.BrA * u);\n Up = (Vp * this.cosgam + Sp * this.singam) / Tp;\n \n if (Math.abs(Math.abs(Up) - 1) < EPSLN) {\n coords.x = 0;\n coords.y = Up < 0 ? -HALF_PI : HALF_PI;\n } else {\n coords.y = this.E / Math.sqrt((1 + Up) / (1 - Up));\n coords.y = phi2z(this.e, Math.pow(coords.y, 1 / this.B));\n \n if (coords.y === Infinity) {\n throw new Error();\n }\n \n coords.x = -this.rB * Math.atan2((Sp * this.cosgam - Vp * this.singam), Math.cos(this.BrA * u));\n }\n \n coords.x += this.lam0;\n \n return coords;\n}\n\nexport var names = [\"Hotine_Oblique_Mercator\", \"Hotine Oblique Mercator\", \"Hotine_Oblique_Mercator_Azimuth_Natural_Origin\", \"Hotine_Oblique_Mercator_Two_Point_Natural_Origin\", \"Hotine_Oblique_Mercator_Azimuth_Center\", \"Oblique_Mercator\", \"omerc\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import msfnz from '../common/msfnz';\nimport tsfnz from '../common/tsfnz';\nimport sign from '../common/sign';\nimport adjust_lon from '../common/adjust_lon';\nimport phi2z from '../common/phi2z';\nimport {HALF_PI, EPSLN} from '../constants/values';\nexport function init() {\n \n //double lat0; /* the reference latitude */\n //double long0; /* the reference longitude */\n //double lat1; /* first standard parallel */\n //double lat2; /* second standard parallel */\n //double r_maj; /* major axis */\n //double r_min; /* minor axis */\n //double false_east; /* x offset in meters */\n //double false_north; /* y offset in meters */\n \n //the above value can be set with proj4.defs\n //example: proj4.defs(\"EPSG:2154\",\"+proj=lcc +lat_1=49 +lat_2=44 +lat_0=46.5 +lon_0=3 +x_0=700000 +y_0=6600000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs\");\n\n if (!this.lat2) {\n this.lat2 = this.lat1;\n } //if lat2 is not defined\n if (!this.k0) {\n this.k0 = 1;\n }\n this.x0 = this.x0 || 0;\n this.y0 = this.y0 || 0;\n // Standard Parallels cannot be equal and on opposite sides of the equator\n if (Math.abs(this.lat1 + this.lat2) < EPSLN) {\n return;\n }\n\n var temp = this.b / this.a;\n this.e = Math.sqrt(1 - temp * temp);\n\n var sin1 = Math.sin(this.lat1);\n var cos1 = Math.cos(this.lat1);\n var ms1 = msfnz(this.e, sin1, cos1);\n var ts1 = tsfnz(this.e, this.lat1, sin1);\n\n var sin2 = Math.sin(this.lat2);\n var cos2 = Math.cos(this.lat2);\n var ms2 = msfnz(this.e, sin2, cos2);\n var ts2 = tsfnz(this.e, this.lat2, sin2);\n\n var ts0 = tsfnz(this.e, this.lat0, Math.sin(this.lat0));\n\n if (Math.abs(this.lat1 - this.lat2) > EPSLN) {\n this.ns = Math.log(ms1 / ms2) / Math.log(ts1 / ts2);\n }\n else {\n this.ns = sin1;\n }\n if (isNaN(this.ns)) {\n this.ns = sin1;\n }\n this.f0 = ms1 / (this.ns * Math.pow(ts1, this.ns));\n this.rh = this.a * this.f0 * Math.pow(ts0, this.ns);\n if (!this.title) {\n this.title = \"Lambert Conformal Conic\";\n }\n}\n\n// Lambert Conformal conic forward equations--mapping lat,long to x,y\n// -----------------------------------------------------------------\nexport function forward(p) {\n\n var lon = p.x;\n var lat = p.y;\n\n // singular cases :\n if (Math.abs(2 * Math.abs(lat) - Math.PI) <= EPSLN) {\n lat = sign(lat) * (HALF_PI - 2 * EPSLN);\n }\n\n var con = Math.abs(Math.abs(lat) - HALF_PI);\n var ts, rh1;\n if (con > EPSLN) {\n ts = tsfnz(this.e, lat, Math.sin(lat));\n rh1 = this.a * this.f0 * Math.pow(ts, this.ns);\n }\n else {\n con = lat * this.ns;\n if (con <= 0) {\n return null;\n }\n rh1 = 0;\n }\n var theta = this.ns * adjust_lon(lon - this.long0);\n p.x = this.k0 * (rh1 * Math.sin(theta)) + this.x0;\n p.y = this.k0 * (this.rh - rh1 * Math.cos(theta)) + this.y0;\n\n return p;\n}\n\n// Lambert Conformal Conic inverse equations--mapping x,y to lat/long\n// -----------------------------------------------------------------\nexport function inverse(p) {\n\n var rh1, con, ts;\n var lat, lon;\n var x = (p.x - this.x0) / this.k0;\n var y = (this.rh - (p.y - this.y0) / this.k0);\n if (this.ns > 0) {\n rh1 = Math.sqrt(x * x + y * y);\n con = 1;\n }\n else {\n rh1 = -Math.sqrt(x * x + y * y);\n con = -1;\n }\n var theta = 0;\n if (rh1 !== 0) {\n theta = Math.atan2((con * x), (con * y));\n }\n if ((rh1 !== 0) || (this.ns > 0)) {\n con = 1 / this.ns;\n ts = Math.pow((rh1 / (this.a * this.f0)), con);\n lat = phi2z(this.e, ts);\n if (lat === -9999) {\n return null;\n }\n }\n else {\n lat = -HALF_PI;\n }\n lon = adjust_lon(theta / this.ns + this.long0);\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\n \"Lambert Tangential Conformal Conic Projection\",\n \"Lambert_Conformal_Conic\",\n \"Lambert_Conformal_Conic_1SP\",\n \"Lambert_Conformal_Conic_2SP\",\n \"lcc\",\n \"Lambert Conic Conformal (1SP)\",\n \"Lambert Conic Conformal (2SP)\"\n];\n\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\n\nexport function init() {\n this.a = 6377397.155;\n this.es = 0.006674372230614;\n this.e = Math.sqrt(this.es);\n if (!this.lat0) {\n this.lat0 = 0.863937979737193;\n }\n if (!this.long0) {\n this.long0 = 0.7417649320975901 - 0.308341501185665;\n }\n /* if scale not set default to 0.9999 */\n if (!this.k0) {\n this.k0 = 0.9999;\n }\n this.s45 = 0.785398163397448; /* 45 */\n this.s90 = 2 * this.s45;\n this.fi0 = this.lat0;\n this.e2 = this.es;\n this.e = Math.sqrt(this.e2);\n this.alfa = Math.sqrt(1 + (this.e2 * Math.pow(Math.cos(this.fi0), 4)) / (1 - this.e2));\n this.uq = 1.04216856380474;\n this.u0 = Math.asin(Math.sin(this.fi0) / this.alfa);\n this.g = Math.pow((1 + this.e * Math.sin(this.fi0)) / (1 - this.e * Math.sin(this.fi0)), this.alfa * this.e / 2);\n this.k = Math.tan(this.u0 / 2 + this.s45) / Math.pow(Math.tan(this.fi0 / 2 + this.s45), this.alfa) * this.g;\n this.k1 = this.k0;\n this.n0 = this.a * Math.sqrt(1 - this.e2) / (1 - this.e2 * Math.pow(Math.sin(this.fi0), 2));\n this.s0 = 1.37008346281555;\n this.n = Math.sin(this.s0);\n this.ro0 = this.k1 * this.n0 / Math.tan(this.s0);\n this.ad = this.s90 - this.uq;\n}\n\n/* ellipsoid */\n/* calculate xy from lat/lon */\n/* Constants, identical to inverse transform function */\nexport function forward(p) {\n var gfi, u, deltav, s, d, eps, ro;\n var lon = p.x;\n var lat = p.y;\n var delta_lon = adjust_lon(lon - this.long0);\n /* Transformation */\n gfi = Math.pow(((1 + this.e * Math.sin(lat)) / (1 - this.e * Math.sin(lat))), (this.alfa * this.e / 2));\n u = 2 * (Math.atan(this.k * Math.pow(Math.tan(lat / 2 + this.s45), this.alfa) / gfi) - this.s45);\n deltav = -delta_lon * this.alfa;\n s = Math.asin(Math.cos(this.ad) * Math.sin(u) + Math.sin(this.ad) * Math.cos(u) * Math.cos(deltav));\n d = Math.asin(Math.cos(u) * Math.sin(deltav) / Math.cos(s));\n eps = this.n * d;\n ro = this.ro0 * Math.pow(Math.tan(this.s0 / 2 + this.s45), this.n) / Math.pow(Math.tan(s / 2 + this.s45), this.n);\n p.y = ro * Math.cos(eps) / 1;\n p.x = ro * Math.sin(eps) / 1;\n\n if (!this.czech) {\n p.y *= -1;\n p.x *= -1;\n }\n return (p);\n}\n\n/* calculate lat/lon from xy */\nexport function inverse(p) {\n var u, deltav, s, d, eps, ro, fi1;\n var ok;\n\n /* Transformation */\n /* revert y, x*/\n var tmp = p.x;\n p.x = p.y;\n p.y = tmp;\n if (!this.czech) {\n p.y *= -1;\n p.x *= -1;\n }\n ro = Math.sqrt(p.x * p.x + p.y * p.y);\n eps = Math.atan2(p.y, p.x);\n d = eps / Math.sin(this.s0);\n s = 2 * (Math.atan(Math.pow(this.ro0 / ro, 1 / this.n) * Math.tan(this.s0 / 2 + this.s45)) - this.s45);\n u = Math.asin(Math.cos(this.ad) * Math.sin(s) - Math.sin(this.ad) * Math.cos(s) * Math.cos(d));\n deltav = Math.asin(Math.cos(s) * Math.sin(d) / Math.cos(u));\n p.x = this.long0 - deltav / this.alfa;\n fi1 = u;\n ok = 0;\n var iter = 0;\n do {\n p.y = 2 * (Math.atan(Math.pow(this.k, - 1 / this.alfa) * Math.pow(Math.tan(u / 2 + this.s45), 1 / this.alfa) * Math.pow((1 + this.e * Math.sin(fi1)) / (1 - this.e * Math.sin(fi1)), this.e / 2)) - this.s45);\n if (Math.abs(fi1 - p.y) < 0.0000000001) {\n ok = 1;\n }\n fi1 = p.y;\n iter += 1;\n } while (ok === 0 && iter < 15);\n if (iter >= 15) {\n return null;\n }\n\n return (p);\n}\n\nexport var names = [\"Krovak\", \"krovak\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","export default function(e0, e1, e2, e3, phi) {\n return (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi));\n}","export default function(x) {\n return (1 - 0.25 * x * (1 + x / 16 * (3 + 1.25 * x)));\n}","export default function(x) {\n return (0.375 * x * (1 + 0.25 * x * (1 + 0.46875 * x)));\n}","export default function(x) {\n return (0.05859375 * x * x * (1 + 0.75 * x));\n}","export default function(x) {\n return (x * x * x * (35 / 3072));\n}","export default function(a, e, sinphi) {\n var temp = e * sinphi;\n return a / Math.sqrt(1 - temp * temp);\n}","import {HALF_PI} from '../constants/values';\nimport sign from './sign';\n\nexport default function(x) {\n return (Math.abs(x) < HALF_PI) ? x : (x - (sign(x) * Math.PI));\n}\n","export default function(ml, e0, e1, e2, e3) {\n var phi;\n var dphi;\n\n phi = ml / e0;\n for (var i = 0; i < 15; i++) {\n dphi = (ml - (e0 * phi - e1 * Math.sin(2 * phi) + e2 * Math.sin(4 * phi) - e3 * Math.sin(6 * phi))) / (e0 - 2 * e1 * Math.cos(2 * phi) + 4 * e2 * Math.cos(4 * phi) - 6 * e3 * Math.cos(6 * phi));\n phi += dphi;\n if (Math.abs(dphi) <= 0.0000000001) {\n return phi;\n }\n }\n\n //..reportError(\"IMLFN-CONV:Latitude failed to converge after 15 iterations\");\n return NaN;\n}","import mlfn from '../common/mlfn';\nimport e0fn from '../common/e0fn';\nimport e1fn from '../common/e1fn';\nimport e2fn from '../common/e2fn';\nimport e3fn from '../common/e3fn';\nimport gN from '../common/gN';\nimport adjust_lon from '../common/adjust_lon';\nimport adjust_lat from '../common/adjust_lat';\nimport imlfn from '../common/imlfn';\nimport {HALF_PI, EPSLN} from '../constants/values';\n\nexport function init() {\n if (!this.sphere) {\n this.e0 = e0fn(this.es);\n this.e1 = e1fn(this.es);\n this.e2 = e2fn(this.es);\n this.e3 = e3fn(this.es);\n this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);\n }\n}\n\n/* Cassini forward equations--mapping lat,long to x,y\n -----------------------------------------------------------------------*/\nexport function forward(p) {\n\n /* Forward equations\n -----------------*/\n var x, y;\n var lam = p.x;\n var phi = p.y;\n lam = adjust_lon(lam - this.long0);\n\n if (this.sphere) {\n x = this.a * Math.asin(Math.cos(phi) * Math.sin(lam));\n y = this.a * (Math.atan2(Math.tan(phi), Math.cos(lam)) - this.lat0);\n }\n else {\n //ellipsoid\n var sinphi = Math.sin(phi);\n var cosphi = Math.cos(phi);\n var nl = gN(this.a, this.e, sinphi);\n var tl = Math.tan(phi) * Math.tan(phi);\n var al = lam * Math.cos(phi);\n var asq = al * al;\n var cl = this.es * cosphi * cosphi / (1 - this.es);\n var ml = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);\n\n x = nl * al * (1 - asq * tl * (1 / 6 - (8 - tl + 8 * cl) * asq / 120));\n y = ml - this.ml0 + nl * sinphi / cosphi * asq * (0.5 + (5 - tl + 6 * cl) * asq / 24);\n\n\n }\n\n p.x = x + this.x0;\n p.y = y + this.y0;\n return p;\n}\n\n/* Inverse equations\n -----------------*/\nexport function inverse(p) {\n p.x -= this.x0;\n p.y -= this.y0;\n var x = p.x / this.a;\n var y = p.y / this.a;\n var phi, lam;\n\n if (this.sphere) {\n var dd = y + this.lat0;\n phi = Math.asin(Math.sin(dd) * Math.cos(x));\n lam = Math.atan2(Math.tan(x), Math.cos(dd));\n }\n else {\n /* ellipsoid */\n var ml1 = this.ml0 / this.a + y;\n var phi1 = imlfn(ml1, this.e0, this.e1, this.e2, this.e3);\n if (Math.abs(Math.abs(phi1) - HALF_PI) <= EPSLN) {\n p.x = this.long0;\n p.y = HALF_PI;\n if (y < 0) {\n p.y *= -1;\n }\n return p;\n }\n var nl1 = gN(this.a, this.e, Math.sin(phi1));\n\n var rl1 = nl1 * nl1 * nl1 / this.a / this.a * (1 - this.es);\n var tl1 = Math.pow(Math.tan(phi1), 2);\n var dl = x * this.a / nl1;\n var dsq = dl * dl;\n phi = phi1 - nl1 * Math.tan(phi1) / rl1 * dl * dl * (0.5 - (1 + 3 * tl1) * dl * dl / 24);\n lam = dl * (1 - dsq * (tl1 / 3 + (1 + 3 * tl1) * tl1 * dsq / 15)) / Math.cos(phi1);\n\n }\n\n p.x = adjust_lon(lam + this.long0);\n p.y = adjust_lat(phi);\n return p;\n\n}\n\nexport var names = [\"Cassini\", \"Cassini_Soldner\", \"cass\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","export default function(eccent, sinphi) {\n var con;\n if (eccent > 1.0e-7) {\n con = eccent * sinphi;\n return ((1 - eccent * eccent) * (sinphi / (1 - con * con) - (0.5 / eccent) * Math.log((1 - con) / (1 + con))));\n }\n else {\n return (2 * sinphi);\n }\n}","\nimport {HALF_PI, EPSLN, FORTPI} from '../constants/values';\n\nimport qsfnz from '../common/qsfnz';\nimport adjust_lon from '../common/adjust_lon';\n\n/*\n reference\n \"New Equal-Area Map Projections for Noncircular Regions\", John P. Snyder,\n The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.\n */\n\nexport var S_POLE = 1;\n\nexport var N_POLE = 2;\nexport var EQUIT = 3;\nexport var OBLIQ = 4;\n\n/* Initialize the Lambert Azimuthal Equal Area projection\n ------------------------------------------------------*/\nexport function init() {\n var t = Math.abs(this.lat0);\n if (Math.abs(t - HALF_PI) < EPSLN) {\n this.mode = this.lat0 < 0 ? this.S_POLE : this.N_POLE;\n }\n else if (Math.abs(t) < EPSLN) {\n this.mode = this.EQUIT;\n }\n else {\n this.mode = this.OBLIQ;\n }\n if (this.es > 0) {\n var sinphi;\n\n this.qp = qsfnz(this.e, 1);\n this.mmf = 0.5 / (1 - this.es);\n this.apa = authset(this.es);\n switch (this.mode) {\n case this.N_POLE:\n this.dd = 1;\n break;\n case this.S_POLE:\n this.dd = 1;\n break;\n case this.EQUIT:\n this.rq = Math.sqrt(0.5 * this.qp);\n this.dd = 1 / this.rq;\n this.xmf = 1;\n this.ymf = 0.5 * this.qp;\n break;\n case this.OBLIQ:\n this.rq = Math.sqrt(0.5 * this.qp);\n sinphi = Math.sin(this.lat0);\n this.sinb1 = qsfnz(this.e, sinphi) / this.qp;\n this.cosb1 = Math.sqrt(1 - this.sinb1 * this.sinb1);\n this.dd = Math.cos(this.lat0) / (Math.sqrt(1 - this.es * sinphi * sinphi) * this.rq * this.cosb1);\n this.ymf = (this.xmf = this.rq) / this.dd;\n this.xmf *= this.dd;\n break;\n }\n }\n else {\n if (this.mode === this.OBLIQ) {\n this.sinph0 = Math.sin(this.lat0);\n this.cosph0 = Math.cos(this.lat0);\n }\n }\n}\n\n/* Lambert Azimuthal Equal Area forward equations--mapping lat,long to x,y\n -----------------------------------------------------------------------*/\nexport function forward(p) {\n\n /* Forward equations\n -----------------*/\n var x, y, coslam, sinlam, sinphi, q, sinb, cosb, b, cosphi;\n var lam = p.x;\n var phi = p.y;\n\n lam = adjust_lon(lam - this.long0);\n if (this.sphere) {\n sinphi = Math.sin(phi);\n cosphi = Math.cos(phi);\n coslam = Math.cos(lam);\n if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {\n y = (this.mode === this.EQUIT) ? 1 + cosphi * coslam : 1 + this.sinph0 * sinphi + this.cosph0 * cosphi * coslam;\n if (y <= EPSLN) {\n return null;\n }\n y = Math.sqrt(2 / y);\n x = y * cosphi * Math.sin(lam);\n y *= (this.mode === this.EQUIT) ? sinphi : this.cosph0 * sinphi - this.sinph0 * cosphi * coslam;\n }\n else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {\n if (this.mode === this.N_POLE) {\n coslam = -coslam;\n }\n if (Math.abs(phi + this.lat0) < EPSLN) {\n return null;\n }\n y = FORTPI - phi * 0.5;\n y = 2 * ((this.mode === this.S_POLE) ? Math.cos(y) : Math.sin(y));\n x = y * Math.sin(lam);\n y *= coslam;\n }\n }\n else {\n sinb = 0;\n cosb = 0;\n b = 0;\n coslam = Math.cos(lam);\n sinlam = Math.sin(lam);\n sinphi = Math.sin(phi);\n q = qsfnz(this.e, sinphi);\n if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {\n sinb = q / this.qp;\n cosb = Math.sqrt(1 - sinb * sinb);\n }\n switch (this.mode) {\n case this.OBLIQ:\n b = 1 + this.sinb1 * sinb + this.cosb1 * cosb * coslam;\n break;\n case this.EQUIT:\n b = 1 + cosb * coslam;\n break;\n case this.N_POLE:\n b = HALF_PI + phi;\n q = this.qp - q;\n break;\n case this.S_POLE:\n b = phi - HALF_PI;\n q = this.qp + q;\n break;\n }\n if (Math.abs(b) < EPSLN) {\n return null;\n }\n switch (this.mode) {\n case this.OBLIQ:\n case this.EQUIT:\n b = Math.sqrt(2 / b);\n if (this.mode === this.OBLIQ) {\n y = this.ymf * b * (this.cosb1 * sinb - this.sinb1 * cosb * coslam);\n }\n else {\n y = (b = Math.sqrt(2 / (1 + cosb * coslam))) * sinb * this.ymf;\n }\n x = this.xmf * b * cosb * sinlam;\n break;\n case this.N_POLE:\n case this.S_POLE:\n if (q >= 0) {\n x = (b = Math.sqrt(q)) * sinlam;\n y = coslam * ((this.mode === this.S_POLE) ? b : -b);\n }\n else {\n x = y = 0;\n }\n break;\n }\n }\n\n p.x = this.a * x + this.x0;\n p.y = this.a * y + this.y0;\n return p;\n}\n\n/* Inverse equations\n -----------------*/\nexport function inverse(p) {\n p.x -= this.x0;\n p.y -= this.y0;\n var x = p.x / this.a;\n var y = p.y / this.a;\n var lam, phi, cCe, sCe, q, rho, ab;\n if (this.sphere) {\n var cosz = 0,\n rh, sinz = 0;\n\n rh = Math.sqrt(x * x + y * y);\n phi = rh * 0.5;\n if (phi > 1) {\n return null;\n }\n phi = 2 * Math.asin(phi);\n if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {\n sinz = Math.sin(phi);\n cosz = Math.cos(phi);\n }\n switch (this.mode) {\n case this.EQUIT:\n phi = (Math.abs(rh) <= EPSLN) ? 0 : Math.asin(y * sinz / rh);\n x *= sinz;\n y = cosz * rh;\n break;\n case this.OBLIQ:\n phi = (Math.abs(rh) <= EPSLN) ? this.lat0 : Math.asin(cosz * this.sinph0 + y * sinz * this.cosph0 / rh);\n x *= sinz * this.cosph0;\n y = (cosz - Math.sin(phi) * this.sinph0) * rh;\n break;\n case this.N_POLE:\n y = -y;\n phi = HALF_PI - phi;\n break;\n case this.S_POLE:\n phi -= HALF_PI;\n break;\n }\n lam = (y === 0 && (this.mode === this.EQUIT || this.mode === this.OBLIQ)) ? 0 : Math.atan2(x, y);\n }\n else {\n ab = 0;\n if (this.mode === this.OBLIQ || this.mode === this.EQUIT) {\n x /= this.dd;\n y *= this.dd;\n rho = Math.sqrt(x * x + y * y);\n if (rho < EPSLN) {\n p.x = this.long0;\n p.y = this.lat0;\n return p;\n }\n sCe = 2 * Math.asin(0.5 * rho / this.rq);\n cCe = Math.cos(sCe);\n x *= (sCe = Math.sin(sCe));\n if (this.mode === this.OBLIQ) {\n ab = cCe * this.sinb1 + y * sCe * this.cosb1 / rho;\n q = this.qp * ab;\n y = rho * this.cosb1 * cCe - y * this.sinb1 * sCe;\n }\n else {\n ab = y * sCe / rho;\n q = this.qp * ab;\n y = rho * cCe;\n }\n }\n else if (this.mode === this.N_POLE || this.mode === this.S_POLE) {\n if (this.mode === this.N_POLE) {\n y = -y;\n }\n q = (x * x + y * y);\n if (!q) {\n p.x = this.long0;\n p.y = this.lat0;\n return p;\n }\n ab = 1 - q / this.qp;\n if (this.mode === this.S_POLE) {\n ab = -ab;\n }\n }\n lam = Math.atan2(x, y);\n phi = authlat(Math.asin(ab), this.apa);\n }\n\n p.x = adjust_lon(this.long0 + lam);\n p.y = phi;\n return p;\n}\n\n/* determine latitude from authalic latitude */\nvar P00 = 0.33333333333333333333;\n\nvar P01 = 0.17222222222222222222;\nvar P02 = 0.10257936507936507936;\nvar P10 = 0.06388888888888888888;\nvar P11 = 0.06640211640211640211;\nvar P20 = 0.01641501294219154443;\n\nfunction authset(es) {\n var t;\n var APA = [];\n APA[0] = es * P00;\n t = es * es;\n APA[0] += t * P01;\n APA[1] = t * P10;\n t *= es;\n APA[0] += t * P02;\n APA[1] += t * P11;\n APA[2] = t * P20;\n return APA;\n}\n\nfunction authlat(beta, APA) {\n var t = beta + beta;\n return (beta + APA[0] * Math.sin(t) + APA[1] * Math.sin(t + t) + APA[2] * Math.sin(t + t + t));\n}\n\nexport var names = [\"Lambert Azimuthal Equal Area\", \"Lambert_Azimuthal_Equal_Area\", \"laea\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names,\n S_POLE: S_POLE,\n N_POLE: N_POLE,\n EQUIT: EQUIT,\n OBLIQ: OBLIQ\n};\n","export default function(x) {\n if (Math.abs(x) > 1) {\n x = (x > 1) ? 1 : -1;\n }\n return Math.asin(x);\n}","import msfnz from '../common/msfnz';\nimport qsfnz from '../common/qsfnz';\nimport adjust_lon from '../common/adjust_lon';\nimport asinz from '../common/asinz';\nimport {EPSLN} from '../constants/values';\n\nexport function init() {\n\n if (Math.abs(this.lat1 + this.lat2) < EPSLN) {\n return;\n }\n this.temp = this.b / this.a;\n this.es = 1 - Math.pow(this.temp, 2);\n this.e3 = Math.sqrt(this.es);\n\n this.sin_po = Math.sin(this.lat1);\n this.cos_po = Math.cos(this.lat1);\n this.t1 = this.sin_po;\n this.con = this.sin_po;\n this.ms1 = msfnz(this.e3, this.sin_po, this.cos_po);\n this.qs1 = qsfnz(this.e3, this.sin_po, this.cos_po);\n\n this.sin_po = Math.sin(this.lat2);\n this.cos_po = Math.cos(this.lat2);\n this.t2 = this.sin_po;\n this.ms2 = msfnz(this.e3, this.sin_po, this.cos_po);\n this.qs2 = qsfnz(this.e3, this.sin_po, this.cos_po);\n\n this.sin_po = Math.sin(this.lat0);\n this.cos_po = Math.cos(this.lat0);\n this.t3 = this.sin_po;\n this.qs0 = qsfnz(this.e3, this.sin_po, this.cos_po);\n\n if (Math.abs(this.lat1 - this.lat2) > EPSLN) {\n this.ns0 = (this.ms1 * this.ms1 - this.ms2 * this.ms2) / (this.qs2 - this.qs1);\n }\n else {\n this.ns0 = this.con;\n }\n this.c = this.ms1 * this.ms1 + this.ns0 * this.qs1;\n this.rh = this.a * Math.sqrt(this.c - this.ns0 * this.qs0) / this.ns0;\n}\n\n/* Albers Conical Equal Area forward equations--mapping lat,long to x,y\n -------------------------------------------------------------------*/\nexport function forward(p) {\n\n var lon = p.x;\n var lat = p.y;\n\n this.sin_phi = Math.sin(lat);\n this.cos_phi = Math.cos(lat);\n\n var qs = qsfnz(this.e3, this.sin_phi, this.cos_phi);\n var rh1 = this.a * Math.sqrt(this.c - this.ns0 * qs) / this.ns0;\n var theta = this.ns0 * adjust_lon(lon - this.long0);\n var x = rh1 * Math.sin(theta) + this.x0;\n var y = this.rh - rh1 * Math.cos(theta) + this.y0;\n\n p.x = x;\n p.y = y;\n return p;\n}\n\nexport function inverse(p) {\n var rh1, qs, con, theta, lon, lat;\n\n p.x -= this.x0;\n p.y = this.rh - p.y + this.y0;\n if (this.ns0 >= 0) {\n rh1 = Math.sqrt(p.x * p.x + p.y * p.y);\n con = 1;\n }\n else {\n rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);\n con = -1;\n }\n theta = 0;\n if (rh1 !== 0) {\n theta = Math.atan2(con * p.x, con * p.y);\n }\n con = rh1 * this.ns0 / this.a;\n if (this.sphere) {\n lat = Math.asin((this.c - con * con) / (2 * this.ns0));\n }\n else {\n qs = (this.c - con * con) / this.ns0;\n lat = this.phi1z(this.e3, qs);\n }\n\n lon = adjust_lon(theta / this.ns0 + this.long0);\n p.x = lon;\n p.y = lat;\n return p;\n}\n\n/* Function to compute phi1, the latitude for the inverse of the\n Albers Conical Equal-Area projection.\n-------------------------------------------*/\nexport function phi1z(eccent, qs) {\n var sinphi, cosphi, con, com, dphi;\n var phi = asinz(0.5 * qs);\n if (eccent < EPSLN) {\n return phi;\n }\n\n var eccnts = eccent * eccent;\n for (var i = 1; i <= 25; i++) {\n sinphi = Math.sin(phi);\n cosphi = Math.cos(phi);\n con = eccent * sinphi;\n com = 1 - con * con;\n dphi = 0.5 * com * com / cosphi * (qs / (1 - eccnts) - sinphi / com + 0.5 / eccent * Math.log((1 - con) / (1 + con)));\n phi = phi + dphi;\n if (Math.abs(dphi) <= 1e-7) {\n return phi;\n }\n }\n return null;\n}\n\nexport var names = [\"Albers_Conic_Equal_Area\", \"Albers\", \"aea\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names,\n phi1z: phi1z\n};\n","import adjust_lon from '../common/adjust_lon';\nimport asinz from '../common/asinz';\nimport {EPSLN} from '../constants/values';\n\n/*\n reference:\n Wolfram Mathworld \"Gnomonic Projection\"\n http://mathworld.wolfram.com/GnomonicProjection.html\n Accessed: 12th November 2009\n */\nexport function init() {\n\n /* Place parameters in static storage for common use\n -------------------------------------------------*/\n this.sin_p14 = Math.sin(this.lat0);\n this.cos_p14 = Math.cos(this.lat0);\n // Approximation for projecting points to the horizon (infinity)\n this.infinity_dist = 1000 * this.a;\n this.rc = 1;\n}\n\n/* Gnomonic forward equations--mapping lat,long to x,y\n ---------------------------------------------------*/\nexport function forward(p) {\n var sinphi, cosphi; /* sin and cos value */\n var dlon; /* delta longitude value */\n var coslon; /* cos of longitude */\n var ksp; /* scale factor */\n var g;\n var x, y;\n var lon = p.x;\n var lat = p.y;\n /* Forward equations\n -----------------*/\n dlon = adjust_lon(lon - this.long0);\n\n sinphi = Math.sin(lat);\n cosphi = Math.cos(lat);\n\n coslon = Math.cos(dlon);\n g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;\n ksp = 1;\n if ((g > 0) || (Math.abs(g) <= EPSLN)) {\n x = this.x0 + this.a * ksp * cosphi * Math.sin(dlon) / g;\n y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon) / g;\n }\n else {\n\n // Point is in the opposing hemisphere and is unprojectable\n // We still need to return a reasonable point, so we project\n // to infinity, on a bearing\n // equivalent to the northern hemisphere equivalent\n // This is a reasonable approximation for short shapes and lines that\n // straddle the horizon.\n\n x = this.x0 + this.infinity_dist * cosphi * Math.sin(dlon);\n y = this.y0 + this.infinity_dist * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);\n\n }\n p.x = x;\n p.y = y;\n return p;\n}\n\nexport function inverse(p) {\n var rh; /* Rho */\n var sinc, cosc;\n var c;\n var lon, lat;\n\n /* Inverse equations\n -----------------*/\n p.x = (p.x - this.x0) / this.a;\n p.y = (p.y - this.y0) / this.a;\n\n p.x /= this.k0;\n p.y /= this.k0;\n\n if ((rh = Math.sqrt(p.x * p.x + p.y * p.y))) {\n c = Math.atan2(rh, this.rc);\n sinc = Math.sin(c);\n cosc = Math.cos(c);\n\n lat = asinz(cosc * this.sin_p14 + (p.y * sinc * this.cos_p14) / rh);\n lon = Math.atan2(p.x * sinc, rh * this.cos_p14 * cosc - p.y * this.sin_p14 * sinc);\n lon = adjust_lon(this.long0 + lon);\n }\n else {\n lat = this.phic0;\n lon = 0;\n }\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"gnom\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import {HALF_PI} from '../constants/values';\n\nexport default function(eccent, q) {\n var temp = 1 - (1 - eccent * eccent) / (2 * eccent) * Math.log((1 - eccent) / (1 + eccent));\n if (Math.abs(Math.abs(q) - temp) < 1.0E-6) {\n if (q < 0) {\n return (-1 * HALF_PI);\n }\n else {\n return HALF_PI;\n }\n }\n //var phi = 0.5* q/(1-eccent*eccent);\n var phi = Math.asin(0.5 * q);\n var dphi;\n var sin_phi;\n var cos_phi;\n var con;\n for (var i = 0; i < 30; i++) {\n sin_phi = Math.sin(phi);\n cos_phi = Math.cos(phi);\n con = eccent * sin_phi;\n dphi = Math.pow(1 - con * con, 2) / (2 * cos_phi) * (q / (1 - eccent * eccent) - sin_phi / (1 - con * con) + 0.5 / eccent * Math.log((1 - con) / (1 + con)));\n phi += dphi;\n if (Math.abs(dphi) <= 0.0000000001) {\n return phi;\n }\n }\n\n //console.log(\"IQSFN-CONV:Latitude failed to converge after 30 iterations\");\n return NaN;\n}\n","import adjust_lon from '../common/adjust_lon';\nimport qsfnz from '../common/qsfnz';\nimport msfnz from '../common/msfnz';\nimport iqsfnz from '../common/iqsfnz';\n\n/*\n reference:\n \"Cartographic Projection Procedures for the UNIX Environment-\n A User's Manual\" by Gerald I. Evenden,\n USGS Open File Report 90-284and Release 4 Interim Reports (2003)\n*/\nexport function init() {\n //no-op\n if (!this.sphere) {\n this.k0 = msfnz(this.e, Math.sin(this.lat_ts), Math.cos(this.lat_ts));\n }\n}\n\n/* Cylindrical Equal Area forward equations--mapping lat,long to x,y\n ------------------------------------------------------------*/\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n var x, y;\n /* Forward equations\n -----------------*/\n var dlon = adjust_lon(lon - this.long0);\n if (this.sphere) {\n x = this.x0 + this.a * dlon * Math.cos(this.lat_ts);\n y = this.y0 + this.a * Math.sin(lat) / Math.cos(this.lat_ts);\n }\n else {\n var qs = qsfnz(this.e, Math.sin(lat));\n x = this.x0 + this.a * this.k0 * dlon;\n y = this.y0 + this.a * qs * 0.5 / this.k0;\n }\n\n p.x = x;\n p.y = y;\n return p;\n}\n\n/* Cylindrical Equal Area inverse equations--mapping x,y to lat/long\n ------------------------------------------------------------*/\nexport function inverse(p) {\n p.x -= this.x0;\n p.y -= this.y0;\n var lon, lat;\n\n if (this.sphere) {\n lon = adjust_lon(this.long0 + (p.x / this.a) / Math.cos(this.lat_ts));\n lat = Math.asin((p.y / this.a) * Math.cos(this.lat_ts));\n }\n else {\n lat = iqsfnz(this.e, 2 * p.y * this.k0 / this.a);\n lon = adjust_lon(this.long0 + p.x / (this.a * this.k0));\n }\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"cea\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\nimport adjust_lat from '../common/adjust_lat';\n\nexport function init() {\n\n this.x0 = this.x0 || 0;\n this.y0 = this.y0 || 0;\n this.lat0 = this.lat0 || 0;\n this.long0 = this.long0 || 0;\n this.lat_ts = this.lat_ts || 0;\n this.title = this.title || \"Equidistant Cylindrical (Plate Carre)\";\n\n this.rc = Math.cos(this.lat_ts);\n}\n\n// forward equations--mapping lat,long to x,y\n// -----------------------------------------------------------------\nexport function forward(p) {\n\n var lon = p.x;\n var lat = p.y;\n\n var dlon = adjust_lon(lon - this.long0);\n var dlat = adjust_lat(lat - this.lat0);\n p.x = this.x0 + (this.a * dlon * this.rc);\n p.y = this.y0 + (this.a * dlat);\n return p;\n}\n\n// inverse equations--mapping x,y to lat/long\n// -----------------------------------------------------------------\nexport function inverse(p) {\n\n var x = p.x;\n var y = p.y;\n\n p.x = adjust_lon(this.long0 + ((x - this.x0) / (this.a * this.rc)));\n p.y = adjust_lat(this.lat0 + ((y - this.y0) / (this.a)));\n return p;\n}\n\nexport var names = [\"Equirectangular\", \"Equidistant_Cylindrical\", \"eqc\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import e0fn from '../common/e0fn';\nimport e1fn from '../common/e1fn';\nimport e2fn from '../common/e2fn';\nimport e3fn from '../common/e3fn';\nimport adjust_lon from '../common/adjust_lon';\nimport adjust_lat from '../common/adjust_lat';\nimport mlfn from '../common/mlfn';\nimport {EPSLN} from '../constants/values';\n\nimport gN from '../common/gN';\nvar MAX_ITER = 20;\n\nexport function init() {\n /* Place parameters in static storage for common use\n -------------------------------------------------*/\n this.temp = this.b / this.a;\n this.es = 1 - Math.pow(this.temp, 2); // devait etre dans tmerc.js mais n y est pas donc je commente sinon retour de valeurs nulles\n this.e = Math.sqrt(this.es);\n this.e0 = e0fn(this.es);\n this.e1 = e1fn(this.es);\n this.e2 = e2fn(this.es);\n this.e3 = e3fn(this.es);\n this.ml0 = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0); //si que des zeros le calcul ne se fait pas\n}\n\n/* Polyconic forward equations--mapping lat,long to x,y\n ---------------------------------------------------*/\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n var x, y, el;\n var dlon = adjust_lon(lon - this.long0);\n el = dlon * Math.sin(lat);\n if (this.sphere) {\n if (Math.abs(lat) <= EPSLN) {\n x = this.a * dlon;\n y = -1 * this.a * this.lat0;\n }\n else {\n x = this.a * Math.sin(el) / Math.tan(lat);\n y = this.a * (adjust_lat(lat - this.lat0) + (1 - Math.cos(el)) / Math.tan(lat));\n }\n }\n else {\n if (Math.abs(lat) <= EPSLN) {\n x = this.a * dlon;\n y = -1 * this.ml0;\n }\n else {\n var nl = gN(this.a, this.e, Math.sin(lat)) / Math.tan(lat);\n x = nl * Math.sin(el);\n y = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, lat) - this.ml0 + nl * (1 - Math.cos(el));\n }\n\n }\n p.x = x + this.x0;\n p.y = y + this.y0;\n return p;\n}\n\n/* Inverse equations\n -----------------*/\nexport function inverse(p) {\n var lon, lat, x, y, i;\n var al, bl;\n var phi, dphi;\n x = p.x - this.x0;\n y = p.y - this.y0;\n\n if (this.sphere) {\n if (Math.abs(y + this.a * this.lat0) <= EPSLN) {\n lon = adjust_lon(x / this.a + this.long0);\n lat = 0;\n }\n else {\n al = this.lat0 + y / this.a;\n bl = x * x / this.a / this.a + al * al;\n phi = al;\n var tanphi;\n for (i = MAX_ITER; i; --i) {\n tanphi = Math.tan(phi);\n dphi = -1 * (al * (phi * tanphi + 1) - phi - 0.5 * (phi * phi + bl) * tanphi) / ((phi - al) / tanphi - 1);\n phi += dphi;\n if (Math.abs(dphi) <= EPSLN) {\n lat = phi;\n break;\n }\n }\n lon = adjust_lon(this.long0 + (Math.asin(x * Math.tan(phi) / this.a)) / Math.sin(lat));\n }\n }\n else {\n if (Math.abs(y + this.ml0) <= EPSLN) {\n lat = 0;\n lon = adjust_lon(this.long0 + x / this.a);\n }\n else {\n\n al = (this.ml0 + y) / this.a;\n bl = x * x / this.a / this.a + al * al;\n phi = al;\n var cl, mln, mlnp, ma;\n var con;\n for (i = MAX_ITER; i; --i) {\n con = this.e * Math.sin(phi);\n cl = Math.sqrt(1 - con * con) * Math.tan(phi);\n mln = this.a * mlfn(this.e0, this.e1, this.e2, this.e3, phi);\n mlnp = this.e0 - 2 * this.e1 * Math.cos(2 * phi) + 4 * this.e2 * Math.cos(4 * phi) - 6 * this.e3 * Math.cos(6 * phi);\n ma = mln / this.a;\n dphi = (al * (cl * ma + 1) - ma - 0.5 * cl * (ma * ma + bl)) / (this.es * Math.sin(2 * phi) * (ma * ma + bl - 2 * al * ma) / (4 * cl) + (al - ma) * (cl * mlnp - 2 / Math.sin(2 * phi)) - mlnp);\n phi -= dphi;\n if (Math.abs(dphi) <= EPSLN) {\n lat = phi;\n break;\n }\n }\n\n //lat=phi4z(this.e,this.e0,this.e1,this.e2,this.e3,al,bl,0,0);\n cl = Math.sqrt(1 - this.es * Math.pow(Math.sin(lat), 2)) * Math.tan(lat);\n lon = adjust_lon(this.long0 + Math.asin(x * cl / this.a) / Math.sin(lat));\n }\n }\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"Polyconic\", \"poly\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import {SEC_TO_RAD} from '../constants/values';\n\n/*\n reference\n Department of Land and Survey Technical Circular 1973/32\n http://www.linz.govt.nz/docs/miscellaneous/nz-map-definition.pdf\n OSG Technical Report 4.1\n http://www.linz.govt.nz/docs/miscellaneous/nzmg.pdf\n */\n\n/**\n * iterations: Number of iterations to refine inverse transform.\n * 0 -> km accuracy\n * 1 -> m accuracy -- suitable for most mapping applications\n * 2 -> mm accuracy\n */\nexport var iterations = 1;\n\nexport function init() {\n this.A = [];\n this.A[1] = 0.6399175073;\n this.A[2] = -0.1358797613;\n this.A[3] = 0.063294409;\n this.A[4] = -0.02526853;\n this.A[5] = 0.0117879;\n this.A[6] = -0.0055161;\n this.A[7] = 0.0026906;\n this.A[8] = -0.001333;\n this.A[9] = 0.00067;\n this.A[10] = -0.00034;\n\n this.B_re = [];\n this.B_im = [];\n this.B_re[1] = 0.7557853228;\n this.B_im[1] = 0;\n this.B_re[2] = 0.249204646;\n this.B_im[2] = 0.003371507;\n this.B_re[3] = -0.001541739;\n this.B_im[3] = 0.041058560;\n this.B_re[4] = -0.10162907;\n this.B_im[4] = 0.01727609;\n this.B_re[5] = -0.26623489;\n this.B_im[5] = -0.36249218;\n this.B_re[6] = -0.6870983;\n this.B_im[6] = -1.1651967;\n\n this.C_re = [];\n this.C_im = [];\n this.C_re[1] = 1.3231270439;\n this.C_im[1] = 0;\n this.C_re[2] = -0.577245789;\n this.C_im[2] = -0.007809598;\n this.C_re[3] = 0.508307513;\n this.C_im[3] = -0.112208952;\n this.C_re[4] = -0.15094762;\n this.C_im[4] = 0.18200602;\n this.C_re[5] = 1.01418179;\n this.C_im[5] = 1.64497696;\n this.C_re[6] = 1.9660549;\n this.C_im[6] = 2.5127645;\n\n this.D = [];\n this.D[1] = 1.5627014243;\n this.D[2] = 0.5185406398;\n this.D[3] = -0.03333098;\n this.D[4] = -0.1052906;\n this.D[5] = -0.0368594;\n this.D[6] = 0.007317;\n this.D[7] = 0.01220;\n this.D[8] = 0.00394;\n this.D[9] = -0.0013;\n}\n\n/**\n New Zealand Map Grid Forward - long/lat to x/y\n long/lat in radians\n */\nexport function forward(p) {\n var n;\n var lon = p.x;\n var lat = p.y;\n\n var delta_lat = lat - this.lat0;\n var delta_lon = lon - this.long0;\n\n // 1. Calculate d_phi and d_psi ... // and d_lambda\n // For this algorithm, delta_latitude is in seconds of arc x 10-5, so we need to scale to those units. Longitude is radians.\n var d_phi = delta_lat / SEC_TO_RAD * 1E-5;\n var d_lambda = delta_lon;\n var d_phi_n = 1; // d_phi^0\n\n var d_psi = 0;\n for (n = 1; n <= 10; n++) {\n d_phi_n = d_phi_n * d_phi;\n d_psi = d_psi + this.A[n] * d_phi_n;\n }\n\n // 2. Calculate theta\n var th_re = d_psi;\n var th_im = d_lambda;\n\n // 3. Calculate z\n var th_n_re = 1;\n var th_n_im = 0; // theta^0\n var th_n_re1;\n var th_n_im1;\n\n var z_re = 0;\n var z_im = 0;\n for (n = 1; n <= 6; n++) {\n th_n_re1 = th_n_re * th_re - th_n_im * th_im;\n th_n_im1 = th_n_im * th_re + th_n_re * th_im;\n th_n_re = th_n_re1;\n th_n_im = th_n_im1;\n z_re = z_re + this.B_re[n] * th_n_re - this.B_im[n] * th_n_im;\n z_im = z_im + this.B_im[n] * th_n_re + this.B_re[n] * th_n_im;\n }\n\n // 4. Calculate easting and northing\n p.x = (z_im * this.a) + this.x0;\n p.y = (z_re * this.a) + this.y0;\n\n return p;\n}\n\n/**\n New Zealand Map Grid Inverse - x/y to long/lat\n */\nexport function inverse(p) {\n var n;\n var x = p.x;\n var y = p.y;\n\n var delta_x = x - this.x0;\n var delta_y = y - this.y0;\n\n // 1. Calculate z\n var z_re = delta_y / this.a;\n var z_im = delta_x / this.a;\n\n // 2a. Calculate theta - first approximation gives km accuracy\n var z_n_re = 1;\n var z_n_im = 0; // z^0\n var z_n_re1;\n var z_n_im1;\n\n var th_re = 0;\n var th_im = 0;\n for (n = 1; n <= 6; n++) {\n z_n_re1 = z_n_re * z_re - z_n_im * z_im;\n z_n_im1 = z_n_im * z_re + z_n_re * z_im;\n z_n_re = z_n_re1;\n z_n_im = z_n_im1;\n th_re = th_re + this.C_re[n] * z_n_re - this.C_im[n] * z_n_im;\n th_im = th_im + this.C_im[n] * z_n_re + this.C_re[n] * z_n_im;\n }\n\n // 2b. Iterate to refine the accuracy of the calculation\n // 0 iterations gives km accuracy\n // 1 iteration gives m accuracy -- good enough for most mapping applications\n // 2 iterations bives mm accuracy\n for (var i = 0; i < this.iterations; i++) {\n var th_n_re = th_re;\n var th_n_im = th_im;\n var th_n_re1;\n var th_n_im1;\n\n var num_re = z_re;\n var num_im = z_im;\n for (n = 2; n <= 6; n++) {\n th_n_re1 = th_n_re * th_re - th_n_im * th_im;\n th_n_im1 = th_n_im * th_re + th_n_re * th_im;\n th_n_re = th_n_re1;\n th_n_im = th_n_im1;\n num_re = num_re + (n - 1) * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);\n num_im = num_im + (n - 1) * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);\n }\n\n th_n_re = 1;\n th_n_im = 0;\n var den_re = this.B_re[1];\n var den_im = this.B_im[1];\n for (n = 2; n <= 6; n++) {\n th_n_re1 = th_n_re * th_re - th_n_im * th_im;\n th_n_im1 = th_n_im * th_re + th_n_re * th_im;\n th_n_re = th_n_re1;\n th_n_im = th_n_im1;\n den_re = den_re + n * (this.B_re[n] * th_n_re - this.B_im[n] * th_n_im);\n den_im = den_im + n * (this.B_im[n] * th_n_re + this.B_re[n] * th_n_im);\n }\n\n // Complex division\n var den2 = den_re * den_re + den_im * den_im;\n th_re = (num_re * den_re + num_im * den_im) / den2;\n th_im = (num_im * den_re - num_re * den_im) / den2;\n }\n\n // 3. Calculate d_phi ... // and d_lambda\n var d_psi = th_re;\n var d_lambda = th_im;\n var d_psi_n = 1; // d_psi^0\n\n var d_phi = 0;\n for (n = 1; n <= 9; n++) {\n d_psi_n = d_psi_n * d_psi;\n d_phi = d_phi + this.D[n] * d_psi_n;\n }\n\n // 4. Calculate latitude and longitude\n // d_phi is calcuated in second of arc * 10^-5, so we need to scale back to radians. d_lambda is in radians.\n var lat = this.lat0 + (d_phi * SEC_TO_RAD * 1E5);\n var lon = this.long0 + d_lambda;\n\n p.x = lon;\n p.y = lat;\n\n return p;\n}\n\nexport var names = [\"New_Zealand_Map_Grid\", \"nzmg\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\n\n/*\n reference\n \"New Equal-Area Map Projections for Noncircular Regions\", John P. Snyder,\n The American Cartographer, Vol 15, No. 4, October 1988, pp. 341-355.\n */\n\n\n/* Initialize the Miller Cylindrical projection\n -------------------------------------------*/\nexport function init() {\n //no-op\n}\n\n/* Miller Cylindrical forward equations--mapping lat,long to x,y\n ------------------------------------------------------------*/\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n /* Forward equations\n -----------------*/\n var dlon = adjust_lon(lon - this.long0);\n var x = this.x0 + this.a * dlon;\n var y = this.y0 + this.a * Math.log(Math.tan((Math.PI / 4) + (lat / 2.5))) * 1.25;\n\n p.x = x;\n p.y = y;\n return p;\n}\n\n/* Miller Cylindrical inverse equations--mapping x,y to lat/long\n ------------------------------------------------------------*/\nexport function inverse(p) {\n p.x -= this.x0;\n p.y -= this.y0;\n\n var lon = adjust_lon(this.long0 + p.x / this.a);\n var lat = 2.5 * (Math.atan(Math.exp(0.8 * p.y / this.a)) - Math.PI / 4);\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"Miller_Cylindrical\", \"mill\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\nimport adjust_lat from '../common/adjust_lat';\nimport pj_enfn from '../common/pj_enfn';\nvar MAX_ITER = 20;\nimport pj_mlfn from '../common/pj_mlfn';\nimport pj_inv_mlfn from '../common/pj_inv_mlfn';\nimport {EPSLN, HALF_PI} from '../constants/values';\n\nimport asinz from '../common/asinz';\n\n\nexport function init() {\n /* Place parameters in static storage for common use\n -------------------------------------------------*/\n\n\n if (!this.sphere) {\n this.en = pj_enfn(this.es);\n }\n else {\n this.n = 1;\n this.m = 0;\n this.es = 0;\n this.C_y = Math.sqrt((this.m + 1) / this.n);\n this.C_x = this.C_y / (this.m + 1);\n }\n\n}\n\n/* Sinusoidal forward equations--mapping lat,long to x,y\n -----------------------------------------------------*/\nexport function forward(p) {\n var x, y;\n var lon = p.x;\n var lat = p.y;\n /* Forward equations\n -----------------*/\n lon = adjust_lon(lon - this.long0);\n\n if (this.sphere) {\n if (!this.m) {\n lat = this.n !== 1 ? Math.asin(this.n * Math.sin(lat)) : lat;\n }\n else {\n var k = this.n * Math.sin(lat);\n for (var i = MAX_ITER; i; --i) {\n var V = (this.m * lat + Math.sin(lat) - k) / (this.m + Math.cos(lat));\n lat -= V;\n if (Math.abs(V) < EPSLN) {\n break;\n }\n }\n }\n x = this.a * this.C_x * lon * (this.m + Math.cos(lat));\n y = this.a * this.C_y * lat;\n\n }\n else {\n\n var s = Math.sin(lat);\n var c = Math.cos(lat);\n y = this.a * pj_mlfn(lat, s, c, this.en);\n x = this.a * lon * c / Math.sqrt(1 - this.es * s * s);\n }\n\n p.x = x;\n p.y = y;\n return p;\n}\n\nexport function inverse(p) {\n var lat, temp, lon, s;\n\n p.x -= this.x0;\n lon = p.x / this.a;\n p.y -= this.y0;\n lat = p.y / this.a;\n\n if (this.sphere) {\n lat /= this.C_y;\n lon = lon / (this.C_x * (this.m + Math.cos(lat)));\n if (this.m) {\n lat = asinz((this.m * lat + Math.sin(lat)) / this.n);\n }\n else if (this.n !== 1) {\n lat = asinz(Math.sin(lat) / this.n);\n }\n lon = adjust_lon(lon + this.long0);\n lat = adjust_lat(lat);\n }\n else {\n lat = pj_inv_mlfn(p.y / this.a, this.es, this.en);\n s = Math.abs(lat);\n if (s < HALF_PI) {\n s = Math.sin(lat);\n temp = this.long0 + p.x * Math.sqrt(1 - this.es * s * s) / (this.a * Math.cos(lat));\n //temp = this.long0 + p.x / (this.a * Math.cos(lat));\n lon = adjust_lon(temp);\n }\n else if ((s - EPSLN) < HALF_PI) {\n lon = this.long0;\n }\n }\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"Sinusoidal\", \"sinu\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\nexport function init() {}\nimport {EPSLN} from '../constants/values';\n/* Mollweide forward equations--mapping lat,long to x,y\n ----------------------------------------------------*/\nexport function forward(p) {\n\n /* Forward equations\n -----------------*/\n var lon = p.x;\n var lat = p.y;\n\n var delta_lon = adjust_lon(lon - this.long0);\n var theta = lat;\n var con = Math.PI * Math.sin(lat);\n\n /* Iterate using the Newton-Raphson method to find theta\n -----------------------------------------------------*/\n while (true) {\n var delta_theta = -(theta + Math.sin(theta) - con) / (1 + Math.cos(theta));\n theta += delta_theta;\n if (Math.abs(delta_theta) < EPSLN) {\n break;\n }\n }\n theta /= 2;\n\n /* If the latitude is 90 deg, force the x coordinate to be \"0 + false easting\"\n this is done here because of precision problems with \"cos(theta)\"\n --------------------------------------------------------------------------*/\n if (Math.PI / 2 - Math.abs(lat) < EPSLN) {\n delta_lon = 0;\n }\n var x = 0.900316316158 * this.a * delta_lon * Math.cos(theta) + this.x0;\n var y = 1.4142135623731 * this.a * Math.sin(theta) + this.y0;\n\n p.x = x;\n p.y = y;\n return p;\n}\n\nexport function inverse(p) {\n var theta;\n var arg;\n\n /* Inverse equations\n -----------------*/\n p.x -= this.x0;\n p.y -= this.y0;\n arg = p.y / (1.4142135623731 * this.a);\n\n /* Because of division by zero problems, 'arg' can not be 1. Therefore\n a number very close to one is used instead.\n -------------------------------------------------------------------*/\n if (Math.abs(arg) > 0.999999999999) {\n arg = 0.999999999999;\n }\n theta = Math.asin(arg);\n var lon = adjust_lon(this.long0 + (p.x / (0.900316316158 * this.a * Math.cos(theta))));\n if (lon < (-Math.PI)) {\n lon = -Math.PI;\n }\n if (lon > Math.PI) {\n lon = Math.PI;\n }\n arg = (2 * theta + Math.sin(2 * theta)) / Math.PI;\n if (Math.abs(arg) > 1) {\n arg = 1;\n }\n var lat = Math.asin(arg);\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"Mollweide\", \"moll\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import e0fn from '../common/e0fn';\nimport e1fn from '../common/e1fn';\nimport e2fn from '../common/e2fn';\nimport e3fn from '../common/e3fn';\nimport msfnz from '../common/msfnz';\nimport mlfn from '../common/mlfn';\nimport adjust_lon from '../common/adjust_lon';\nimport adjust_lat from '../common/adjust_lat';\nimport imlfn from '../common/imlfn';\nimport {EPSLN} from '../constants/values';\n\nexport function init() {\n\n /* Place parameters in static storage for common use\n -------------------------------------------------*/\n // Standard Parallels cannot be equal and on opposite sides of the equator\n if (Math.abs(this.lat1 + this.lat2) < EPSLN) {\n return;\n }\n this.lat2 = this.lat2 || this.lat1;\n this.temp = this.b / this.a;\n this.es = 1 - Math.pow(this.temp, 2);\n this.e = Math.sqrt(this.es);\n this.e0 = e0fn(this.es);\n this.e1 = e1fn(this.es);\n this.e2 = e2fn(this.es);\n this.e3 = e3fn(this.es);\n\n this.sinphi = Math.sin(this.lat1);\n this.cosphi = Math.cos(this.lat1);\n\n this.ms1 = msfnz(this.e, this.sinphi, this.cosphi);\n this.ml1 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat1);\n\n if (Math.abs(this.lat1 - this.lat2) < EPSLN) {\n this.ns = this.sinphi;\n }\n else {\n this.sinphi = Math.sin(this.lat2);\n this.cosphi = Math.cos(this.lat2);\n this.ms2 = msfnz(this.e, this.sinphi, this.cosphi);\n this.ml2 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat2);\n this.ns = (this.ms1 - this.ms2) / (this.ml2 - this.ml1);\n }\n this.g = this.ml1 + this.ms1 / this.ns;\n this.ml0 = mlfn(this.e0, this.e1, this.e2, this.e3, this.lat0);\n this.rh = this.a * (this.g - this.ml0);\n}\n\n/* Equidistant Conic forward equations--mapping lat,long to x,y\n -----------------------------------------------------------*/\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n var rh1;\n\n /* Forward equations\n -----------------*/\n if (this.sphere) {\n rh1 = this.a * (this.g - lat);\n }\n else {\n var ml = mlfn(this.e0, this.e1, this.e2, this.e3, lat);\n rh1 = this.a * (this.g - ml);\n }\n var theta = this.ns * adjust_lon(lon - this.long0);\n var x = this.x0 + rh1 * Math.sin(theta);\n var y = this.y0 + this.rh - rh1 * Math.cos(theta);\n p.x = x;\n p.y = y;\n return p;\n}\n\n/* Inverse equations\n -----------------*/\nexport function inverse(p) {\n p.x -= this.x0;\n p.y = this.rh - p.y + this.y0;\n var con, rh1, lat, lon;\n if (this.ns >= 0) {\n rh1 = Math.sqrt(p.x * p.x + p.y * p.y);\n con = 1;\n }\n else {\n rh1 = -Math.sqrt(p.x * p.x + p.y * p.y);\n con = -1;\n }\n var theta = 0;\n if (rh1 !== 0) {\n theta = Math.atan2(con * p.x, con * p.y);\n }\n\n if (this.sphere) {\n lon = adjust_lon(this.long0 + theta / this.ns);\n lat = adjust_lat(this.g - rh1 / this.a);\n p.x = lon;\n p.y = lat;\n return p;\n }\n else {\n var ml = this.g - rh1 / this.a;\n lat = imlfn(ml, this.e0, this.e1, this.e2, this.e3);\n lon = adjust_lon(this.long0 + theta / this.ns);\n p.x = lon;\n p.y = lat;\n return p;\n }\n\n}\n\nexport var names = [\"Equidistant_Conic\", \"eqdc\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\n\nimport {HALF_PI, EPSLN} from '../constants/values';\n\nimport asinz from '../common/asinz';\n\n/* Initialize the Van Der Grinten projection\n ----------------------------------------*/\nexport function init() {\n //this.R = 6370997; //Radius of earth\n this.R = this.a;\n}\n\nexport function forward(p) {\n\n var lon = p.x;\n var lat = p.y;\n\n /* Forward equations\n -----------------*/\n var dlon = adjust_lon(lon - this.long0);\n var x, y;\n\n if (Math.abs(lat) <= EPSLN) {\n x = this.x0 + this.R * dlon;\n y = this.y0;\n }\n var theta = asinz(2 * Math.abs(lat / Math.PI));\n if ((Math.abs(dlon) <= EPSLN) || (Math.abs(Math.abs(lat) - HALF_PI) <= EPSLN)) {\n x = this.x0;\n if (lat >= 0) {\n y = this.y0 + Math.PI * this.R * Math.tan(0.5 * theta);\n }\n else {\n y = this.y0 + Math.PI * this.R * -Math.tan(0.5 * theta);\n }\n // return(OK);\n }\n var al = 0.5 * Math.abs((Math.PI / dlon) - (dlon / Math.PI));\n var asq = al * al;\n var sinth = Math.sin(theta);\n var costh = Math.cos(theta);\n\n var g = costh / (sinth + costh - 1);\n var gsq = g * g;\n var m = g * (2 / sinth - 1);\n var msq = m * m;\n var con = Math.PI * this.R * (al * (g - msq) + Math.sqrt(asq * (g - msq) * (g - msq) - (msq + asq) * (gsq - msq))) / (msq + asq);\n if (dlon < 0) {\n con = -con;\n }\n x = this.x0 + con;\n //con = Math.abs(con / (Math.PI * this.R));\n var q = asq + g;\n con = Math.PI * this.R * (m * q - al * Math.sqrt((msq + asq) * (asq + 1) - q * q)) / (msq + asq);\n if (lat >= 0) {\n //y = this.y0 + Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);\n y = this.y0 + con;\n }\n else {\n //y = this.y0 - Math.PI * this.R * Math.sqrt(1 - con * con - 2 * al * con);\n y = this.y0 - con;\n }\n p.x = x;\n p.y = y;\n return p;\n}\n\n/* Van Der Grinten inverse equations--mapping x,y to lat/long\n ---------------------------------------------------------*/\nexport function inverse(p) {\n var lon, lat;\n var xx, yy, xys, c1, c2, c3;\n var a1;\n var m1;\n var con;\n var th1;\n var d;\n\n /* inverse equations\n -----------------*/\n p.x -= this.x0;\n p.y -= this.y0;\n con = Math.PI * this.R;\n xx = p.x / con;\n yy = p.y / con;\n xys = xx * xx + yy * yy;\n c1 = -Math.abs(yy) * (1 + xys);\n c2 = c1 - 2 * yy * yy + xx * xx;\n c3 = -2 * c1 + 1 + 2 * yy * yy + xys * xys;\n d = yy * yy / c3 + (2 * c2 * c2 * c2 / c3 / c3 / c3 - 9 * c1 * c2 / c3 / c3) / 27;\n a1 = (c1 - c2 * c2 / 3 / c3) / c3;\n m1 = 2 * Math.sqrt(-a1 / 3);\n con = ((3 * d) / a1) / m1;\n if (Math.abs(con) > 1) {\n if (con >= 0) {\n con = 1;\n }\n else {\n con = -1;\n }\n }\n th1 = Math.acos(con) / 3;\n if (p.y >= 0) {\n lat = (-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;\n }\n else {\n lat = -(-m1 * Math.cos(th1 + Math.PI / 3) - c2 / 3 / c3) * Math.PI;\n }\n\n if (Math.abs(xx) < EPSLN) {\n lon = this.long0;\n }\n else {\n lon = adjust_lon(this.long0 + Math.PI * (xys - 1 + Math.sqrt(1 + 2 * (xx * xx - yy * yy) + xys * xys)) / 2 / xx);\n }\n\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"Van_der_Grinten_I\", \"VanDerGrinten\", \"vandg\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\nimport {HALF_PI, EPSLN} from '../constants/values';\n\nimport mlfn from '../common/mlfn';\nimport e0fn from '../common/e0fn';\nimport e1fn from '../common/e1fn';\nimport e2fn from '../common/e2fn';\nimport e3fn from '../common/e3fn';\nimport gN from '../common/gN';\nimport asinz from '../common/asinz';\nimport imlfn from '../common/imlfn';\n\n\n\nexport function init() {\n this.sin_p12 = Math.sin(this.lat0);\n this.cos_p12 = Math.cos(this.lat0);\n}\n\nexport function forward(p) {\n var lon = p.x;\n var lat = p.y;\n var sinphi = Math.sin(p.y);\n var cosphi = Math.cos(p.y);\n var dlon = adjust_lon(lon - this.long0);\n var e0, e1, e2, e3, Mlp, Ml, tanphi, Nl1, Nl, psi, Az, G, H, GH, Hs, c, kp, cos_c, s, s2, s3, s4, s5;\n if (this.sphere) {\n if (Math.abs(this.sin_p12 - 1) <= EPSLN) {\n //North Pole case\n p.x = this.x0 + this.a * (HALF_PI - lat) * Math.sin(dlon);\n p.y = this.y0 - this.a * (HALF_PI - lat) * Math.cos(dlon);\n return p;\n }\n else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {\n //South Pole case\n p.x = this.x0 + this.a * (HALF_PI + lat) * Math.sin(dlon);\n p.y = this.y0 + this.a * (HALF_PI + lat) * Math.cos(dlon);\n return p;\n }\n else {\n //default case\n cos_c = this.sin_p12 * sinphi + this.cos_p12 * cosphi * Math.cos(dlon);\n c = Math.acos(cos_c);\n kp = c ? c / Math.sin(c) : 1;\n p.x = this.x0 + this.a * kp * cosphi * Math.sin(dlon);\n p.y = this.y0 + this.a * kp * (this.cos_p12 * sinphi - this.sin_p12 * cosphi * Math.cos(dlon));\n return p;\n }\n }\n else {\n e0 = e0fn(this.es);\n e1 = e1fn(this.es);\n e2 = e2fn(this.es);\n e3 = e3fn(this.es);\n if (Math.abs(this.sin_p12 - 1) <= EPSLN) {\n //North Pole case\n Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);\n Ml = this.a * mlfn(e0, e1, e2, e3, lat);\n p.x = this.x0 + (Mlp - Ml) * Math.sin(dlon);\n p.y = this.y0 - (Mlp - Ml) * Math.cos(dlon);\n return p;\n }\n else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {\n //South Pole case\n Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);\n Ml = this.a * mlfn(e0, e1, e2, e3, lat);\n p.x = this.x0 + (Mlp + Ml) * Math.sin(dlon);\n p.y = this.y0 + (Mlp + Ml) * Math.cos(dlon);\n return p;\n }\n else {\n //Default case\n tanphi = sinphi / cosphi;\n Nl1 = gN(this.a, this.e, this.sin_p12);\n Nl = gN(this.a, this.e, sinphi);\n psi = Math.atan((1 - this.es) * tanphi + this.es * Nl1 * this.sin_p12 / (Nl * cosphi));\n Az = Math.atan2(Math.sin(dlon), this.cos_p12 * Math.tan(psi) - this.sin_p12 * Math.cos(dlon));\n if (Az === 0) {\n s = Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));\n }\n else if (Math.abs(Math.abs(Az) - Math.PI) <= EPSLN) {\n s = -Math.asin(this.cos_p12 * Math.sin(psi) - this.sin_p12 * Math.cos(psi));\n }\n else {\n s = Math.asin(Math.sin(dlon) * Math.cos(psi) / Math.sin(Az));\n }\n G = this.e * this.sin_p12 / Math.sqrt(1 - this.es);\n H = this.e * this.cos_p12 * Math.cos(Az) / Math.sqrt(1 - this.es);\n GH = G * H;\n Hs = H * H;\n s2 = s * s;\n s3 = s2 * s;\n s4 = s3 * s;\n s5 = s4 * s;\n c = Nl1 * s * (1 - s2 * Hs * (1 - Hs) / 6 + s3 / 8 * GH * (1 - 2 * Hs) + s4 / 120 * (Hs * (4 - 7 * Hs) - 3 * G * G * (1 - 7 * Hs)) - s5 / 48 * GH);\n p.x = this.x0 + c * Math.sin(Az);\n p.y = this.y0 + c * Math.cos(Az);\n return p;\n }\n }\n\n\n}\n\nexport function inverse(p) {\n p.x -= this.x0;\n p.y -= this.y0;\n var rh, z, sinz, cosz, lon, lat, con, e0, e1, e2, e3, Mlp, M, N1, psi, Az, cosAz, tmp, A, B, D, Ee, F, sinpsi;\n if (this.sphere) {\n rh = Math.sqrt(p.x * p.x + p.y * p.y);\n if (rh > (2 * HALF_PI * this.a)) {\n return;\n }\n z = rh / this.a;\n\n sinz = Math.sin(z);\n cosz = Math.cos(z);\n\n lon = this.long0;\n if (Math.abs(rh) <= EPSLN) {\n lat = this.lat0;\n }\n else {\n lat = asinz(cosz * this.sin_p12 + (p.y * sinz * this.cos_p12) / rh);\n con = Math.abs(this.lat0) - HALF_PI;\n if (Math.abs(con) <= EPSLN) {\n if (this.lat0 >= 0) {\n lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y));\n }\n else {\n lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y));\n }\n }\n else {\n /*con = cosz - this.sin_p12 * Math.sin(lat);\n if ((Math.abs(con) < EPSLN) && (Math.abs(p.x) < EPSLN)) {\n //no-op, just keep the lon value as is\n } else {\n var temp = Math.atan2((p.x * sinz * this.cos_p12), (con * rh));\n lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz * this.cos_p12), (con * rh)));\n }*/\n lon = adjust_lon(this.long0 + Math.atan2(p.x * sinz, rh * this.cos_p12 * cosz - p.y * this.sin_p12 * sinz));\n }\n }\n\n p.x = lon;\n p.y = lat;\n return p;\n }\n else {\n e0 = e0fn(this.es);\n e1 = e1fn(this.es);\n e2 = e2fn(this.es);\n e3 = e3fn(this.es);\n if (Math.abs(this.sin_p12 - 1) <= EPSLN) {\n //North pole case\n Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);\n rh = Math.sqrt(p.x * p.x + p.y * p.y);\n M = Mlp - rh;\n lat = imlfn(M / this.a, e0, e1, e2, e3);\n lon = adjust_lon(this.long0 + Math.atan2(p.x, - 1 * p.y));\n p.x = lon;\n p.y = lat;\n return p;\n }\n else if (Math.abs(this.sin_p12 + 1) <= EPSLN) {\n //South pole case\n Mlp = this.a * mlfn(e0, e1, e2, e3, HALF_PI);\n rh = Math.sqrt(p.x * p.x + p.y * p.y);\n M = rh - Mlp;\n\n lat = imlfn(M / this.a, e0, e1, e2, e3);\n lon = adjust_lon(this.long0 + Math.atan2(p.x, p.y));\n p.x = lon;\n p.y = lat;\n return p;\n }\n else {\n //default case\n rh = Math.sqrt(p.x * p.x + p.y * p.y);\n Az = Math.atan2(p.x, p.y);\n N1 = gN(this.a, this.e, this.sin_p12);\n cosAz = Math.cos(Az);\n tmp = this.e * this.cos_p12 * cosAz;\n A = -tmp * tmp / (1 - this.es);\n B = 3 * this.es * (1 - A) * this.sin_p12 * this.cos_p12 * cosAz / (1 - this.es);\n D = rh / N1;\n Ee = D - A * (1 + A) * Math.pow(D, 3) / 6 - B * (1 + 3 * A) * Math.pow(D, 4) / 24;\n F = 1 - A * Ee * Ee / 2 - D * Ee * Ee * Ee / 6;\n psi = Math.asin(this.sin_p12 * Math.cos(Ee) + this.cos_p12 * Math.sin(Ee) * cosAz);\n lon = adjust_lon(this.long0 + Math.asin(Math.sin(Az) * Math.sin(Ee) / Math.cos(psi)));\n sinpsi = Math.sin(psi);\n lat = Math.atan2((sinpsi - this.es * F * this.sin_p12) * Math.tan(psi), sinpsi * (1 - this.es));\n p.x = lon;\n p.y = lat;\n return p;\n }\n }\n\n}\n\nexport var names = [\"Azimuthal_Equidistant\", \"aeqd\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import adjust_lon from '../common/adjust_lon';\nimport asinz from '../common/asinz';\nimport {EPSLN, HALF_PI} from '../constants/values';\n\nexport function init() {\n //double temp; /* temporary variable */\n\n /* Place parameters in static storage for common use\n -------------------------------------------------*/\n this.sin_p14 = Math.sin(this.lat0);\n this.cos_p14 = Math.cos(this.lat0);\n}\n\n/* Orthographic forward equations--mapping lat,long to x,y\n ---------------------------------------------------*/\nexport function forward(p) {\n var sinphi, cosphi; /* sin and cos value */\n var dlon; /* delta longitude value */\n var coslon; /* cos of longitude */\n var ksp; /* scale factor */\n var g, x, y;\n var lon = p.x;\n var lat = p.y;\n /* Forward equations\n -----------------*/\n dlon = adjust_lon(lon - this.long0);\n\n sinphi = Math.sin(lat);\n cosphi = Math.cos(lat);\n\n coslon = Math.cos(dlon);\n g = this.sin_p14 * sinphi + this.cos_p14 * cosphi * coslon;\n ksp = 1;\n if ((g > 0) || (Math.abs(g) <= EPSLN)) {\n x = this.a * ksp * cosphi * Math.sin(dlon);\n y = this.y0 + this.a * ksp * (this.cos_p14 * sinphi - this.sin_p14 * cosphi * coslon);\n }\n p.x = x;\n p.y = y;\n return p;\n}\n\nexport function inverse(p) {\n var rh; /* height above ellipsoid */\n var z; /* angle */\n var sinz, cosz; /* sin of z and cos of z */\n var con;\n var lon, lat;\n /* Inverse equations\n -----------------*/\n p.x -= this.x0;\n p.y -= this.y0;\n rh = Math.sqrt(p.x * p.x + p.y * p.y);\n z = asinz(rh / this.a);\n\n sinz = Math.sin(z);\n cosz = Math.cos(z);\n\n lon = this.long0;\n if (Math.abs(rh) <= EPSLN) {\n lat = this.lat0;\n p.x = lon;\n p.y = lat;\n return p;\n }\n lat = asinz(cosz * this.sin_p14 + (p.y * sinz * this.cos_p14) / rh);\n con = Math.abs(this.lat0) - HALF_PI;\n if (Math.abs(con) <= EPSLN) {\n if (this.lat0 >= 0) {\n lon = adjust_lon(this.long0 + Math.atan2(p.x, - p.y));\n }\n else {\n lon = adjust_lon(this.long0 - Math.atan2(-p.x, p.y));\n }\n p.x = lon;\n p.y = lat;\n return p;\n }\n lon = adjust_lon(this.long0 + Math.atan2((p.x * sinz), rh * this.cos_p14 * cosz - p.y * this.sin_p14 * sinz));\n p.x = lon;\n p.y = lat;\n return p;\n}\n\nexport var names = [\"ortho\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","// QSC projection rewritten from the original PROJ4\n// https://github.com/OSGeo/proj.4/blob/master/src/PJ_qsc.c\n\nimport {EPSLN, TWO_PI, SPI, HALF_PI, FORTPI} from '../constants/values';\n\n/* constants */\nvar FACE_ENUM = {\n FRONT: 1,\n RIGHT: 2,\n BACK: 3,\n LEFT: 4,\n TOP: 5,\n BOTTOM: 6\n};\n\nvar AREA_ENUM = {\n AREA_0: 1,\n AREA_1: 2,\n AREA_2: 3,\n AREA_3: 4\n};\n\nexport function init() {\n\n this.x0 = this.x0 || 0;\n this.y0 = this.y0 || 0;\n this.lat0 = this.lat0 || 0;\n this.long0 = this.long0 || 0;\n this.lat_ts = this.lat_ts || 0;\n this.title = this.title || \"Quadrilateralized Spherical Cube\";\n\n /* Determine the cube face from the center of projection. */\n if (this.lat0 >= HALF_PI - FORTPI / 2.0) {\n this.face = FACE_ENUM.TOP;\n } else if (this.lat0 <= -(HALF_PI - FORTPI / 2.0)) {\n this.face = FACE_ENUM.BOTTOM;\n } else if (Math.abs(this.long0) <= FORTPI) {\n this.face = FACE_ENUM.FRONT;\n } else if (Math.abs(this.long0) <= HALF_PI + FORTPI) {\n this.face = this.long0 > 0.0 ? FACE_ENUM.RIGHT : FACE_ENUM.LEFT;\n } else {\n this.face = FACE_ENUM.BACK;\n }\n\n /* Fill in useful values for the ellipsoid <-> sphere shift\n * described in [LK12]. */\n if (this.es !== 0) {\n this.one_minus_f = 1 - (this.a - this.b) / this.a;\n this.one_minus_f_squared = this.one_minus_f * this.one_minus_f;\n }\n}\n\n// QSC forward equations--mapping lat,long to x,y\n// -----------------------------------------------------------------\nexport function forward(p) {\n var xy = {x: 0, y: 0};\n var lat, lon;\n var theta, phi;\n var t, mu;\n /* nu; */\n var area = {value: 0};\n\n // move lon according to projection's lon\n p.x -= this.long0;\n\n /* Convert the geodetic latitude to a geocentric latitude.\n * This corresponds to the shift from the ellipsoid to the sphere\n * described in [LK12]. */\n if (this.es !== 0) {//if (P->es != 0) {\n lat = Math.atan(this.one_minus_f_squared * Math.tan(p.y));\n } else {\n lat = p.y;\n }\n\n /* Convert the input lat, lon into theta, phi as used by QSC.\n * This depends on the cube face and the area on it.\n * For the top and bottom face, we can compute theta and phi\n * directly from phi, lam. For the other faces, we must use\n * unit sphere cartesian coordinates as an intermediate step. */\n lon = p.x; //lon = lp.lam;\n if (this.face === FACE_ENUM.TOP) {\n phi = HALF_PI - lat;\n if (lon >= FORTPI && lon <= HALF_PI + FORTPI) {\n area.value = AREA_ENUM.AREA_0;\n theta = lon - HALF_PI;\n } else if (lon > HALF_PI + FORTPI || lon <= -(HALF_PI + FORTPI)) {\n area.value = AREA_ENUM.AREA_1;\n theta = (lon > 0.0 ? lon - SPI : lon + SPI);\n } else if (lon > -(HALF_PI + FORTPI) && lon <= -FORTPI) {\n area.value = AREA_ENUM.AREA_2;\n theta = lon + HALF_PI;\n } else {\n area.value = AREA_ENUM.AREA_3;\n theta = lon;\n }\n } else if (this.face === FACE_ENUM.BOTTOM) {\n phi = HALF_PI + lat;\n if (lon >= FORTPI && lon <= HALF_PI + FORTPI) {\n area.value = AREA_ENUM.AREA_0;\n theta = -lon + HALF_PI;\n } else if (lon < FORTPI && lon >= -FORTPI) {\n area.value = AREA_ENUM.AREA_1;\n theta = -lon;\n } else if (lon < -FORTPI && lon >= -(HALF_PI + FORTPI)) {\n area.value = AREA_ENUM.AREA_2;\n theta = -lon - HALF_PI;\n } else {\n area.value = AREA_ENUM.AREA_3;\n theta = (lon > 0.0 ? -lon + SPI : -lon - SPI);\n }\n } else {\n var q, r, s;\n var sinlat, coslat;\n var sinlon, coslon;\n\n if (this.face === FACE_ENUM.RIGHT) {\n lon = qsc_shift_lon_origin(lon, +HALF_PI);\n } else if (this.face === FACE_ENUM.BACK) {\n lon = qsc_shift_lon_origin(lon, +SPI);\n } else if (this.face === FACE_ENUM.LEFT) {\n lon = qsc_shift_lon_origin(lon, -HALF_PI);\n }\n sinlat = Math.sin(lat);\n coslat = Math.cos(lat);\n sinlon = Math.sin(lon);\n coslon = Math.cos(lon);\n q = coslat * coslon;\n r = coslat * sinlon;\n s = sinlat;\n\n if (this.face === FACE_ENUM.FRONT) {\n phi = Math.acos(q);\n theta = qsc_fwd_equat_face_theta(phi, s, r, area);\n } else if (this.face === FACE_ENUM.RIGHT) {\n phi = Math.acos(r);\n theta = qsc_fwd_equat_face_theta(phi, s, -q, area);\n } else if (this.face === FACE_ENUM.BACK) {\n phi = Math.acos(-q);\n theta = qsc_fwd_equat_face_theta(phi, s, -r, area);\n } else if (this.face === FACE_ENUM.LEFT) {\n phi = Math.acos(-r);\n theta = qsc_fwd_equat_face_theta(phi, s, q, area);\n } else {\n /* Impossible */\n phi = theta = 0;\n area.value = AREA_ENUM.AREA_0;\n }\n }\n\n /* Compute mu and nu for the area of definition.\n * For mu, see Eq. (3-21) in [OL76], but note the typos:\n * compare with Eq. (3-14). For nu, see Eq. (3-38). */\n mu = Math.atan((12 / SPI) * (theta + Math.acos(Math.sin(theta) * Math.cos(FORTPI)) - HALF_PI));\n t = Math.sqrt((1 - Math.cos(phi)) / (Math.cos(mu) * Math.cos(mu)) / (1 - Math.cos(Math.atan(1 / Math.cos(theta)))));\n\n /* Apply the result to the real area. */\n if (area.value === AREA_ENUM.AREA_1) {\n mu += HALF_PI;\n } else if (area.value === AREA_ENUM.AREA_2) {\n mu += SPI;\n } else if (area.value === AREA_ENUM.AREA_3) {\n mu += 1.5 * SPI;\n }\n\n /* Now compute x, y from mu and nu */\n xy.x = t * Math.cos(mu);\n xy.y = t * Math.sin(mu);\n xy.x = xy.x * this.a + this.x0;\n xy.y = xy.y * this.a + this.y0;\n\n p.x = xy.x;\n p.y = xy.y;\n return p;\n}\n\n// QSC inverse equations--mapping x,y to lat/long\n// -----------------------------------------------------------------\nexport function inverse(p) {\n var lp = {lam: 0, phi: 0};\n var mu, nu, cosmu, tannu;\n var tantheta, theta, cosphi, phi;\n var t;\n var area = {value: 0};\n\n /* de-offset */\n p.x = (p.x - this.x0) / this.a;\n p.y = (p.y - this.y0) / this.a;\n\n /* Convert the input x, y to the mu and nu angles as used by QSC.\n * This depends on the area of the cube face. */\n nu = Math.atan(Math.sqrt(p.x * p.x + p.y * p.y));\n mu = Math.atan2(p.y, p.x);\n if (p.x >= 0.0 && p.x >= Math.abs(p.y)) {\n area.value = AREA_ENUM.AREA_0;\n } else if (p.y >= 0.0 && p.y >= Math.abs(p.x)) {\n area.value = AREA_ENUM.AREA_1;\n mu -= HALF_PI;\n } else if (p.x < 0.0 && -p.x >= Math.abs(p.y)) {\n area.value = AREA_ENUM.AREA_2;\n mu = (mu < 0.0 ? mu + SPI : mu - SPI);\n } else {\n area.value = AREA_ENUM.AREA_3;\n mu += HALF_PI;\n }\n\n /* Compute phi and theta for the area of definition.\n * The inverse projection is not described in the original paper, but some\n * good hints can be found here (as of 2011-12-14):\n * http://fits.gsfc.nasa.gov/fitsbits/saf.93/saf.9302\n * (search for \"Message-Id: <9302181759.AA25477 at fits.cv.nrao.edu>\") */\n t = (SPI / 12) * Math.tan(mu);\n tantheta = Math.sin(t) / (Math.cos(t) - (1 / Math.sqrt(2)));\n theta = Math.atan(tantheta);\n cosmu = Math.cos(mu);\n tannu = Math.tan(nu);\n cosphi = 1 - cosmu * cosmu * tannu * tannu * (1 - Math.cos(Math.atan(1 / Math.cos(theta))));\n if (cosphi < -1) {\n cosphi = -1;\n } else if (cosphi > +1) {\n cosphi = +1;\n }\n\n /* Apply the result to the real area on the cube face.\n * For the top and bottom face, we can compute phi and lam directly.\n * For the other faces, we must use unit sphere cartesian coordinates\n * as an intermediate step. */\n if (this.face === FACE_ENUM.TOP) {\n phi = Math.acos(cosphi);\n lp.phi = HALF_PI - phi;\n if (area.value === AREA_ENUM.AREA_0) {\n lp.lam = theta + HALF_PI;\n } else if (area.value === AREA_ENUM.AREA_1) {\n lp.lam = (theta < 0.0 ? theta + SPI : theta - SPI);\n } else if (area.value === AREA_ENUM.AREA_2) {\n lp.lam = theta - HALF_PI;\n } else /* area.value == AREA_ENUM.AREA_3 */ {\n lp.lam = theta;\n }\n } else if (this.face === FACE_ENUM.BOTTOM) {\n phi = Math.acos(cosphi);\n lp.phi = phi - HALF_PI;\n if (area.value === AREA_ENUM.AREA_0) {\n lp.lam = -theta + HALF_PI;\n } else if (area.value === AREA_ENUM.AREA_1) {\n lp.lam = -theta;\n } else if (area.value === AREA_ENUM.AREA_2) {\n lp.lam = -theta - HALF_PI;\n } else /* area.value == AREA_ENUM.AREA_3 */ {\n lp.lam = (theta < 0.0 ? -theta - SPI : -theta + SPI);\n }\n } else {\n /* Compute phi and lam via cartesian unit sphere coordinates. */\n var q, r, s;\n q = cosphi;\n t = q * q;\n if (t >= 1) {\n s = 0;\n } else {\n s = Math.sqrt(1 - t) * Math.sin(theta);\n }\n t += s * s;\n if (t >= 1) {\n r = 0;\n } else {\n r = Math.sqrt(1 - t);\n }\n /* Rotate q,r,s into the correct area. */\n if (area.value === AREA_ENUM.AREA_1) {\n t = r;\n r = -s;\n s = t;\n } else if (area.value === AREA_ENUM.AREA_2) {\n r = -r;\n s = -s;\n } else if (area.value === AREA_ENUM.AREA_3) {\n t = r;\n r = s;\n s = -t;\n }\n /* Rotate q,r,s into the correct cube face. */\n if (this.face === FACE_ENUM.RIGHT) {\n t = q;\n q = -r;\n r = t;\n } else if (this.face === FACE_ENUM.BACK) {\n q = -q;\n r = -r;\n } else if (this.face === FACE_ENUM.LEFT) {\n t = q;\n q = r;\n r = -t;\n }\n /* Now compute phi and lam from the unit sphere coordinates. */\n lp.phi = Math.acos(-s) - HALF_PI;\n lp.lam = Math.atan2(r, q);\n if (this.face === FACE_ENUM.RIGHT) {\n lp.lam = qsc_shift_lon_origin(lp.lam, -HALF_PI);\n } else if (this.face === FACE_ENUM.BACK) {\n lp.lam = qsc_shift_lon_origin(lp.lam, -SPI);\n } else if (this.face === FACE_ENUM.LEFT) {\n lp.lam = qsc_shift_lon_origin(lp.lam, +HALF_PI);\n }\n }\n\n /* Apply the shift from the sphere to the ellipsoid as described\n * in [LK12]. */\n if (this.es !== 0) {\n var invert_sign;\n var tanphi, xa;\n invert_sign = (lp.phi < 0 ? 1 : 0);\n tanphi = Math.tan(lp.phi);\n xa = this.b / Math.sqrt(tanphi * tanphi + this.one_minus_f_squared);\n lp.phi = Math.atan(Math.sqrt(this.a * this.a - xa * xa) / (this.one_minus_f * xa));\n if (invert_sign) {\n lp.phi = -lp.phi;\n }\n }\n\n lp.lam += this.long0;\n p.x = lp.lam;\n p.y = lp.phi;\n return p;\n}\n\n/* Helper function for forward projection: compute the theta angle\n * and determine the area number. */\nfunction qsc_fwd_equat_face_theta(phi, y, x, area) {\n var theta;\n if (phi < EPSLN) {\n area.value = AREA_ENUM.AREA_0;\n theta = 0.0;\n } else {\n theta = Math.atan2(y, x);\n if (Math.abs(theta) <= FORTPI) {\n area.value = AREA_ENUM.AREA_0;\n } else if (theta > FORTPI && theta <= HALF_PI + FORTPI) {\n area.value = AREA_ENUM.AREA_1;\n theta -= HALF_PI;\n } else if (theta > HALF_PI + FORTPI || theta <= -(HALF_PI + FORTPI)) {\n area.value = AREA_ENUM.AREA_2;\n theta = (theta >= 0.0 ? theta - SPI : theta + SPI);\n } else {\n area.value = AREA_ENUM.AREA_3;\n theta += HALF_PI;\n }\n }\n return theta;\n}\n\n/* Helper function: shift the longitude. */\nfunction qsc_shift_lon_origin(lon, offset) {\n var slon = lon + offset;\n if (slon < -SPI) {\n slon += TWO_PI;\n } else if (slon > +SPI) {\n slon -= TWO_PI;\n }\n return slon;\n}\n\nexport var names = [\"Quadrilateralized Spherical Cube\", \"Quadrilateralized_Spherical_Cube\", \"qsc\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n\n","// Robinson projection\n// Based on https://github.com/OSGeo/proj.4/blob/master/src/PJ_robin.c\n// Polynomial coeficients from http://article.gmane.org/gmane.comp.gis.proj-4.devel/6039\n\nimport {HALF_PI, D2R, R2D, EPSLN} from '../constants/values';\nimport adjust_lon from '../common/adjust_lon';\n\nvar COEFS_X = [\n [1.0000, 2.2199e-17, -7.15515e-05, 3.1103e-06],\n [0.9986, -0.000482243, -2.4897e-05, -1.3309e-06],\n [0.9954, -0.00083103, -4.48605e-05, -9.86701e-07],\n [0.9900, -0.00135364, -5.9661e-05, 3.6777e-06],\n [0.9822, -0.00167442, -4.49547e-06, -5.72411e-06],\n [0.9730, -0.00214868, -9.03571e-05, 1.8736e-08],\n [0.9600, -0.00305085, -9.00761e-05, 1.64917e-06],\n [0.9427, -0.00382792, -6.53386e-05, -2.6154e-06],\n [0.9216, -0.00467746, -0.00010457, 4.81243e-06],\n [0.8962, -0.00536223, -3.23831e-05, -5.43432e-06],\n [0.8679, -0.00609363, -0.000113898, 3.32484e-06],\n [0.8350, -0.00698325, -6.40253e-05, 9.34959e-07],\n [0.7986, -0.00755338, -5.00009e-05, 9.35324e-07],\n [0.7597, -0.00798324, -3.5971e-05, -2.27626e-06],\n [0.7186, -0.00851367, -7.01149e-05, -8.6303e-06],\n [0.6732, -0.00986209, -0.000199569, 1.91974e-05],\n [0.6213, -0.010418, 8.83923e-05, 6.24051e-06],\n [0.5722, -0.00906601, 0.000182, 6.24051e-06],\n [0.5322, -0.00677797, 0.000275608, 6.24051e-06]\n];\n\nvar COEFS_Y = [\n [-5.20417e-18, 0.0124, 1.21431e-18, -8.45284e-11],\n [0.0620, 0.0124, -1.26793e-09, 4.22642e-10],\n [0.1240, 0.0124, 5.07171e-09, -1.60604e-09],\n [0.1860, 0.0123999, -1.90189e-08, 6.00152e-09],\n [0.2480, 0.0124002, 7.10039e-08, -2.24e-08],\n [0.3100, 0.0123992, -2.64997e-07, 8.35986e-08],\n [0.3720, 0.0124029, 9.88983e-07, -3.11994e-07],\n [0.4340, 0.0123893, -3.69093e-06, -4.35621e-07],\n [0.4958, 0.0123198, -1.02252e-05, -3.45523e-07],\n [0.5571, 0.0121916, -1.54081e-05, -5.82288e-07],\n [0.6176, 0.0119938, -2.41424e-05, -5.25327e-07],\n [0.6769, 0.011713, -3.20223e-05, -5.16405e-07],\n [0.7346, 0.0113541, -3.97684e-05, -6.09052e-07],\n [0.7903, 0.0109107, -4.89042e-05, -1.04739e-06],\n [0.8435, 0.0103431, -6.4615e-05, -1.40374e-09],\n [0.8936, 0.00969686, -6.4636e-05, -8.547e-06],\n [0.9394, 0.00840947, -0.000192841, -4.2106e-06],\n [0.9761, 0.00616527, -0.000256, -4.2106e-06],\n [1.0000, 0.00328947, -0.000319159, -4.2106e-06]\n];\n\nvar FXC = 0.8487;\nvar FYC = 1.3523;\nvar C1 = R2D/5; // rad to 5-degree interval\nvar RC1 = 1/C1;\nvar NODES = 18;\n\nvar poly3_val = function(coefs, x) {\n return coefs[0] + x * (coefs[1] + x * (coefs[2] + x * coefs[3]));\n};\n\nvar poly3_der = function(coefs, x) {\n return coefs[1] + x * (2 * coefs[2] + x * 3 * coefs[3]);\n};\n\nfunction newton_rapshon(f_df, start, max_err, iters) {\n var x = start;\n for (; iters; --iters) {\n var upd = f_df(x);\n x -= upd;\n if (Math.abs(upd) < max_err) {\n break;\n }\n }\n return x;\n}\n\nexport function init() {\n this.x0 = this.x0 || 0;\n this.y0 = this.y0 || 0;\n this.long0 = this.long0 || 0;\n this.es = 0;\n this.title = this.title || \"Robinson\";\n}\n\nexport function forward(ll) {\n var lon = adjust_lon(ll.x - this.long0);\n\n var dphi = Math.abs(ll.y);\n var i = Math.floor(dphi * C1);\n if (i < 0) {\n i = 0;\n } else if (i >= NODES) {\n i = NODES - 1;\n }\n dphi = R2D * (dphi - RC1 * i);\n var xy = {\n x: poly3_val(COEFS_X[i], dphi) * lon,\n y: poly3_val(COEFS_Y[i], dphi)\n };\n if (ll.y < 0) {\n xy.y = -xy.y;\n }\n\n xy.x = xy.x * this.a * FXC + this.x0;\n xy.y = xy.y * this.a * FYC + this.y0;\n return xy;\n}\n\nexport function inverse(xy) {\n var ll = {\n x: (xy.x - this.x0) / (this.a * FXC),\n y: Math.abs(xy.y - this.y0) / (this.a * FYC)\n };\n\n if (ll.y >= 1) { // pathologic case\n ll.x /= COEFS_X[NODES][0];\n ll.y = xy.y < 0 ? -HALF_PI : HALF_PI;\n } else {\n // find table interval\n var i = Math.floor(ll.y * NODES);\n if (i < 0) {\n i = 0;\n } else if (i >= NODES) {\n i = NODES - 1;\n }\n for (;;) {\n if (COEFS_Y[i][0] > ll.y) {\n --i;\n } else if (COEFS_Y[i+1][0] <= ll.y) {\n ++i;\n } else {\n break;\n }\n }\n // linear interpolation in 5 degree interval\n var coefs = COEFS_Y[i];\n var t = 5 * (ll.y - coefs[0]) / (COEFS_Y[i+1][0] - coefs[0]);\n // find t so that poly3_val(coefs, t) = ll.y\n t = newton_rapshon(function(x) {\n return (poly3_val(coefs, x) - ll.y) / poly3_der(coefs, x);\n }, t, EPSLN, 100);\n\n ll.x /= poly3_val(COEFS_X[i], t);\n ll.y = (5 * i + t) * D2R;\n if (xy.y < 0) {\n ll.y = -ll.y;\n }\n }\n\n ll.x = adjust_lon(ll.x + this.long0);\n return ll;\n}\n\nexport var names = [\"Robinson\", \"robin\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import {\n geodeticToGeocentric,\n geocentricToGeodetic\n} from '../datumUtils';\n\nexport function init() {\n this.name = 'geocent';\n\n}\n\nexport function forward(p) {\n var point = geodeticToGeocentric(p, this.es, this.a);\n return point;\n}\n\nexport function inverse(p) {\n var point = geocentricToGeodetic(p, this.es, this.a, this.b);\n return point;\n}\n\nexport var names = [\"Geocentric\", 'geocentric', \"geocent\", \"Geocent\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};","\nvar mode = {\n N_POLE: 0,\n S_POLE: 1,\n EQUIT: 2,\n OBLIQ: 3\n};\n\nimport { D2R, HALF_PI, EPSLN } from \"../constants/values\";\nimport hypot from \"../common/hypot\";\n\nvar params = {\n h: { def: 100000, num: true }, // default is Karman line, no default in PROJ.7\n azi: { def: 0, num: true, degrees: true }, // default is North\n tilt: { def: 0, num: true, degrees: true }, // default is Nadir\n long0: { def: 0, num: true }, // default is Greenwich, conversion to rad is automatic\n lat0: { def: 0, num: true } // default is Equator, conversion to rad is automatic\n};\n\nexport function init() {\n Object.keys(params).forEach(function (p) {\n if (typeof this[p] === \"undefined\") {\n this[p] = params[p].def;\n } else if (params[p].num && isNaN(this[p])) {\n throw new Error(\"Invalid parameter value, must be numeric \" + p + \" = \" + this[p]);\n } else if (params[p].num) {\n this[p] = parseFloat(this[p]);\n }\n if (params[p].degrees) {\n this[p] = this[p] * D2R;\n }\n }.bind(this));\n\n if (Math.abs((Math.abs(this.lat0) - HALF_PI)) < EPSLN) {\n this.mode = this.lat0 < 0 ? mode.S_POLE : mode.N_POLE;\n } else if (Math.abs(this.lat0) < EPSLN) {\n this.mode = mode.EQUIT;\n } else {\n this.mode = mode.OBLIQ;\n this.sinph0 = Math.sin(this.lat0);\n this.cosph0 = Math.cos(this.lat0);\n }\n\n this.pn1 = this.h / this.a; // Normalize relative to the Earth's radius\n\n if (this.pn1 <= 0 || this.pn1 > 1e10) {\n throw new Error(\"Invalid height\");\n }\n \n this.p = 1 + this.pn1;\n this.rp = 1 / this.p;\n this.h1 = 1 / this.pn1;\n this.pfact = (this.p + 1) * this.h1;\n this.es = 0;\n\n var omega = this.tilt;\n var gamma = this.azi;\n this.cg = Math.cos(gamma);\n this.sg = Math.sin(gamma);\n this.cw = Math.cos(omega);\n this.sw = Math.sin(omega);\n}\n\nexport function forward(p) {\n p.x -= this.long0;\n var sinphi = Math.sin(p.y);\n var cosphi = Math.cos(p.y);\n var coslam = Math.cos(p.x);\n var x, y;\n switch (this.mode) {\n case mode.OBLIQ:\n y = this.sinph0 * sinphi + this.cosph0 * cosphi * coslam;\n break;\n case mode.EQUIT:\n y = cosphi * coslam;\n break;\n case mode.S_POLE:\n y = -sinphi;\n break;\n case mode.N_POLE:\n y = sinphi;\n break;\n }\n y = this.pn1 / (this.p - y);\n x = y * cosphi * Math.sin(p.x);\n\n switch (this.mode) {\n case mode.OBLIQ:\n y *= this.cosph0 * sinphi - this.sinph0 * cosphi * coslam;\n break;\n case mode.EQUIT:\n y *= sinphi;\n break;\n case mode.N_POLE:\n y *= -(cosphi * coslam);\n break;\n case mode.S_POLE:\n y *= cosphi * coslam;\n break;\n }\n\n // Tilt \n var yt, ba;\n yt = y * this.cg + x * this.sg;\n ba = 1 / (yt * this.sw * this.h1 + this.cw);\n x = (x * this.cg - y * this.sg) * this.cw * ba;\n y = yt * ba;\n\n p.x = x * this.a;\n p.y = y * this.a;\n return p;\n}\n\nexport function inverse(p) {\n p.x /= this.a;\n p.y /= this.a;\n var r = { x: p.x, y: p.y };\n\n // Un-Tilt\n var bm, bq, yt;\n yt = 1 / (this.pn1 - p.y * this.sw);\n bm = this.pn1 * p.x * yt;\n bq = this.pn1 * p.y * this.cw * yt;\n p.x = bm * this.cg + bq * this.sg;\n p.y = bq * this.cg - bm * this.sg;\n\n var rh = hypot(p.x, p.y);\n if (Math.abs(rh) < EPSLN) {\n r.x = 0;\n r.y = p.y;\n } else {\n var cosz, sinz;\n sinz = 1 - rh * rh * this.pfact;\n sinz = (this.p - Math.sqrt(sinz)) / (this.pn1 / rh + rh / this.pn1);\n cosz = Math.sqrt(1 - sinz * sinz);\n switch (this.mode) {\n case mode.OBLIQ:\n r.y = Math.asin(cosz * this.sinph0 + p.y * sinz * this.cosph0 / rh);\n p.y = (cosz - this.sinph0 * Math.sin(r.y)) * rh;\n p.x *= sinz * this.cosph0;\n break;\n case mode.EQUIT:\n r.y = Math.asin(p.y * sinz / rh);\n p.y = cosz * rh;\n p.x *= sinz;\n break;\n case mode.N_POLE:\n r.y = Math.asin(cosz);\n p.y = -p.y;\n break;\n case mode.S_POLE:\n r.y = -Math.asin(cosz);\n break;\n }\n r.x = Math.atan2(p.x, p.y);\n }\n\n p.x = r.x + this.long0;\n p.y = r.y;\n return p;\n}\n\nexport var names = [\"Tilted_Perspective\", \"tpers\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names\n};\n","import hypot from '../common/hypot';\n\nexport function init() {\n this.flip_axis = (this.sweep === 'x' ? 1 : 0);\n this.h = Number(this.h);\n this.radius_g_1 = this.h / this.a;\n\n if (this.radius_g_1 <= 0 || this.radius_g_1 > 1e10) {\n throw new Error();\n }\n\n this.radius_g = 1.0 + this.radius_g_1;\n this.C = this.radius_g * this.radius_g - 1.0;\n\n if (this.es !== 0.0) {\n var one_es = 1.0 - this.es;\n var rone_es = 1 / one_es;\n\n this.radius_p = Math.sqrt(one_es);\n this.radius_p2 = one_es;\n this.radius_p_inv2 = rone_es;\n\n this.shape = 'ellipse'; // Use as a condition in the forward and inverse functions.\n } else {\n this.radius_p = 1.0;\n this.radius_p2 = 1.0;\n this.radius_p_inv2 = 1.0;\n\n this.shape = 'sphere'; // Use as a condition in the forward and inverse functions.\n }\n\n if (!this.title) {\n this.title = \"Geostationary Satellite View\";\n }\n}\n\nfunction forward(p) {\n var lon = p.x;\n var lat = p.y;\n var tmp, v_x, v_y, v_z;\n lon = lon - this.long0;\n\n if (this.shape === 'ellipse') {\n lat = Math.atan(this.radius_p2 * Math.tan(lat));\n var r = this.radius_p / hypot(this.radius_p * Math.cos(lat), Math.sin(lat));\n\n v_x = r * Math.cos(lon) * Math.cos(lat);\n v_y = r * Math.sin(lon) * Math.cos(lat);\n v_z = r * Math.sin(lat);\n\n if (((this.radius_g - v_x) * v_x - v_y * v_y - v_z * v_z * this.radius_p_inv2) < 0.0) {\n p.x = Number.NaN;\n p.y = Number.NaN;\n return p;\n }\n\n tmp = this.radius_g - v_x;\n if (this.flip_axis) {\n p.x = this.radius_g_1 * Math.atan(v_y / hypot(v_z, tmp));\n p.y = this.radius_g_1 * Math.atan(v_z / tmp);\n } else {\n p.x = this.radius_g_1 * Math.atan(v_y / tmp);\n p.y = this.radius_g_1 * Math.atan(v_z / hypot(v_y, tmp));\n }\n } else if (this.shape === 'sphere') {\n tmp = Math.cos(lat);\n v_x = Math.cos(lon) * tmp;\n v_y = Math.sin(lon) * tmp;\n v_z = Math.sin(lat);\n tmp = this.radius_g - v_x;\n\n if (this.flip_axis) {\n p.x = this.radius_g_1 * Math.atan(v_y / hypot(v_z, tmp));\n p.y = this.radius_g_1 * Math.atan(v_z / tmp);\n } else {\n p.x = this.radius_g_1 * Math.atan(v_y / tmp);\n p.y = this.radius_g_1 * Math.atan(v_z / hypot(v_y, tmp));\n }\n }\n p.x = p.x * this.a;\n p.y = p.y * this.a;\n return p;\n}\n\nfunction inverse(p) {\n var v_x = -1.0;\n var v_y = 0.0;\n var v_z = 0.0;\n var a, b, det, k;\n\n p.x = p.x / this.a;\n p.y = p.y / this.a;\n\n if (this.shape === 'ellipse') {\n if (this.flip_axis) {\n v_z = Math.tan(p.y / this.radius_g_1);\n v_y = Math.tan(p.x / this.radius_g_1) * hypot(1.0, v_z);\n } else {\n v_y = Math.tan(p.x / this.radius_g_1);\n v_z = Math.tan(p.y / this.radius_g_1) * hypot(1.0, v_y);\n }\n\n var v_zp = v_z / this.radius_p;\n a = v_y * v_y + v_zp * v_zp + v_x * v_x;\n b = 2 * this.radius_g * v_x;\n det = (b * b) - 4 * a * this.C;\n\n if (det < 0.0) {\n p.x = Number.NaN;\n p.y = Number.NaN;\n return p;\n }\n\n k = (-b - Math.sqrt(det)) / (2.0 * a);\n v_x = this.radius_g + k * v_x;\n v_y *= k;\n v_z *= k;\n\n p.x = Math.atan2(v_y, v_x);\n p.y = Math.atan(v_z * Math.cos(p.x) / v_x);\n p.y = Math.atan(this.radius_p_inv2 * Math.tan(p.y));\n } else if (this.shape === 'sphere') {\n if (this.flip_axis) {\n v_z = Math.tan(p.y / this.radius_g_1);\n v_y = Math.tan(p.x / this.radius_g_1) * Math.sqrt(1.0 + v_z * v_z);\n } else {\n v_y = Math.tan(p.x / this.radius_g_1);\n v_z = Math.tan(p.y / this.radius_g_1) * Math.sqrt(1.0 + v_y * v_y);\n }\n\n a = v_y * v_y + v_z * v_z + v_x * v_x;\n b = 2 * this.radius_g * v_x;\n det = (b * b) - 4 * a * this.C;\n if (det < 0.0) {\n p.x = Number.NaN;\n p.y = Number.NaN;\n return p;\n }\n\n k = (-b - Math.sqrt(det)) / (2.0 * a);\n v_x = this.radius_g + k * v_x;\n v_y *= k;\n v_z *= k;\n\n p.x = Math.atan2(v_y, v_x);\n p.y = Math.atan(v_z * Math.cos(p.x) / v_x);\n }\n p.x = p.x + this.long0;\n return p;\n}\n\nexport var names = [\"Geostationary Satellite View\", \"Geostationary_Satellite\", \"geos\"];\nexport default {\n init: init,\n forward: forward,\n inverse: inverse,\n names: names,\n};\n\n","import tmerc from './lib/projections/tmerc';\nimport etmerc from './lib/projections/etmerc';\nimport utm from './lib/projections/utm';\nimport sterea from './lib/projections/sterea';\nimport stere from './lib/projections/stere';\nimport somerc from './lib/projections/somerc';\nimport omerc from './lib/projections/omerc';\nimport lcc from './lib/projections/lcc';\nimport krovak from './lib/projections/krovak';\nimport cass from './lib/projections/cass';\nimport laea from './lib/projections/laea';\nimport aea from './lib/projections/aea';\nimport gnom from './lib/projections/gnom';\nimport cea from './lib/projections/cea';\nimport eqc from './lib/projections/eqc';\nimport poly from './lib/projections/poly';\nimport nzmg from './lib/projections/nzmg';\nimport mill from './lib/projections/mill';\nimport sinu from './lib/projections/sinu';\nimport moll from './lib/projections/moll';\nimport eqdc from './lib/projections/eqdc';\nimport vandg from './lib/projections/vandg';\nimport aeqd from './lib/projections/aeqd';\nimport ortho from './lib/projections/ortho';\nimport qsc from './lib/projections/qsc';\nimport robin from './lib/projections/robin';\nimport geocent from './lib/projections/geocent';\nimport tpers from './lib/projections/tpers';\nimport geos from './lib/projections/geos';\nexport default function(proj4){\n proj4.Proj.projections.add(tmerc);\n proj4.Proj.projections.add(etmerc);\n proj4.Proj.projections.add(utm);\n proj4.Proj.projections.add(sterea);\n proj4.Proj.projections.add(stere);\n proj4.Proj.projections.add(somerc);\n proj4.Proj.projections.add(omerc);\n proj4.Proj.projections.add(lcc);\n proj4.Proj.projections.add(krovak);\n proj4.Proj.projections.add(cass);\n proj4.Proj.projections.add(laea);\n proj4.Proj.projections.add(aea);\n proj4.Proj.projections.add(gnom);\n proj4.Proj.projections.add(cea);\n proj4.Proj.projections.add(eqc);\n proj4.Proj.projections.add(poly);\n proj4.Proj.projections.add(nzmg);\n proj4.Proj.projections.add(mill);\n proj4.Proj.projections.add(sinu);\n proj4.Proj.projections.add(moll);\n proj4.Proj.projections.add(eqdc);\n proj4.Proj.projections.add(vandg);\n proj4.Proj.projections.add(aeqd);\n proj4.Proj.projections.add(ortho);\n proj4.Proj.projections.add(qsc);\n proj4.Proj.projections.add(robin);\n proj4.Proj.projections.add(geocent);\n proj4.Proj.projections.add(tpers);\n proj4.Proj.projections.add(geos);\n}","import proj4 from './core';\nimport Proj from \"./Proj\";\nimport Point from \"./Point\";\nimport common from \"./common/toPoint\";\nimport defs from \"./defs\";\nimport nadgrid from \"./nadgrid\";\nimport transform from \"./transform\";\nimport mgrs from \"mgrs\";\nimport includedProjections from \"../projs\";\n\nproj4.defaultDatum = 'WGS84'; //default datum\nproj4.Proj = Proj;\nproj4.WGS84 = new proj4.Proj('WGS84');\nproj4.Point = Point;\nproj4.toPoint = common;\nproj4.defs = defs;\nproj4.nadgrid = nadgrid;\nproj4.transform = transform;\nproj4.mgrs = mgrs;\nproj4.version = '__VERSION__';\nincludedProjections(proj4);\nexport default proj4;\n","import * as Cesium from \"mars3d-cesium\";\n\nfunction getColor(color) {\n if (typeof color == \"string\") {\n color = Cesium.Color.fromCssColorString(color);\n } else if (Array.isArray(color)) {\n color = Cesium.Color.fromBytes(color[0], color[1], color[2], color[3]);\n }\n return color;\n}\n\n/**\n *@param {Object} options 样式参数\n *@param {Cesium.Color|String}[options.outlineColor=Cesium.Color.YELLOW] 线或边颜色，仅线、面数据有效。\n *@param {Cesium.Color|String}[options.fillColor=Cesium.Color.fromBytes(0, 255, 255, 30)] 填充颜色，仅面数据有效。\n *@param {Cesium.Color|String}[options.backgroundColor] 背景色\n *@param {Number}[options.lineWidth=1.5] 线宽，仅线数据有效。\n *@param {Boolean}[options.outline=true] 是否显示边，仅面数据有效。\n *@param {Boolean}[options.fill=true] 是否填充，仅面数据有效。\n *@param {Cesium.Color|String}[options.fontColor=Cesium.Color.BLACK] 注记文本颜色\n *@param {Number}[options.fontSize=16] 注记文本字体大小，仅在数据有点时有效。\n *@param {String}[options.fontFamily=\"宋体\"] 注记文本字体名称，仅在数据有点时有效。\n *@param {Boolean}[options.labelStroke] 是否显示注记文本轮廓线，仅在数据有点时有效。\n *@param {String}[options.labelStrokeWidth=1] 注记文本轮廓线宽，仅在数据有点时有效。\n *@param {Cesium.Color|String}[options.labelStrokeColor] 注记文本轮廓线颜色，仅在数据有点时有效。\n *\n *@param {Number}[options.pointSize=4] 注记点大小，仅在数据有点时有效。\n *@param {Cesium.Color|String}[options.pointColor=Cesium.Color.YELLOW] 注记点颜色，仅在数据有点时有效。\n *@param {String}[options.labelPropertyName='NAME'] 注记文本属性名称，仅在数据有点时有效。\n *@param {String}[options.makerImage=undefined] 注记点图标，如果设置点图标，则其他点样式参数无效，仅在数据有点时有效。\n *@param {Number}[options.ringRadius=2] 注记点样式为Ring时，圆心点大小（半径），仅在数据有点时有效。\n *@param {String}[options.pointStyle='Ring'] 注记点样式，仅在数据有点时有效。'Solid'为实心圆,'Ring'为带圆心的圆形,'Circle'为空心圆\n *@param {Number}[options.circleLineWidth=2] 注记点样式为Circle时，圆形线宽\n *@param {Boolean}[options.showMarker=true] 是否显示注记点，仅在数据有点时有效。\n *@param {Boolean}[options.showLabel=true] 是否显示文本，仅在数据有点时有效。\n *@param {Boolean}[options.showCenterLabel=true] 是否显示文本，仅对线和面数据有效。\n *@param {String}[options.centerLabelPropertyName] 几何中心注记文本属性名称，仅对线和面数据有效。\n *@param {Number}[options.labelOffsetX=10] 标注文本x方向偏移量，仅在数据有点时有效。以屏幕为参考，左上角为0，向右为正，单位为像素\n *@param {Number}[options.labelOffsetY=5] 标注文本y方向偏移量，仅在数据有点时有效。以屏幕为参考，左上角为0，向下为正，单位为像素\n *@param {Array.<Number>}[options.lineDash=undefined] 虚线样式，不设置则为实线\n *@param {String}[options.lineCap=\"butt\"] 设置线条末端线帽的样式。 butt——默认。向线条的每个末端添加平直的边缘；round——向线条的每个末端添加圆形线帽；square——向线条的每个末端添加正方形线帽。\n *@param {String}[options.shadowColor=undefined] 设置用于阴影的颜色\n *@param {Number}[options.shadowBlur=undefined] 设置用于阴影的模糊级别\n *@param {Number}[options.shadowOffsetX=undefined] 设置阴影距形状的水平距离\n *@param {Number}[options.shadowOffsetY=undefined] 设置阴影距形状的垂直距离\n *@param {String}[options.lineJoin=\"miter\"] 设置当两条线交汇时所创建边角的类型。bevel——斜角；round——创建圆角；miter——默认。创建尖角。\n *@param {Number}[options.miterLimit=10] 设置最大斜接长度。\n *@memberof Cesium\n *@constructor\n */\nexport function VectorStyle(options) {\n //*@param {Number}[options.lineOffset=undefined] 双线样式参数，两线间距，单位为米(m)。不设置则为单线\n\n if (typeof document == \"undefined\") {\n return options;\n }\n options = Cesium.defaultValue(options, {});\n this.fillColor = Cesium.defaultValue(getColor(options.fillColor), getColor([0, 255, 255, 30]));\n\n this.fill = Cesium.defaultValue(options.fill, true);\n\n this.labelStroke = options.labelStroke;\n this.labelStrokeWidth = Cesium.defaultValue(options.labelStrokeWidth, 1);\n this.labelStrokeColor = Cesium.defaultValue(getColor(options.labelStrokeColor), getColor([160, 99, 57]));\n\n //线样式\n this.outlineColor = Cesium.defaultValue(getColor(options.outlineColor), getColor(\"yellow\"));\n\n this.backgroundColor = getColor(options.backgroundColor);\n\n this.lineWidth = Cesium.defaultValue(options.lineWidth, 1.5);\n this.outline = Cesium.defaultValue(options.outline, true);\n\n //注记样式\n this.fontColor = getColor(Cesium.defaultValue(options.fontColor, \"black\"));\n\n this.fontSize = Cesium.defaultValue(options.fontSize, 16);\n this.fontFamily = Cesium.defaultValue(options.fontFamily, \"宋体\");\n this.pointSize = Cesium.defaultValue(options.pointSize, 4);\n this.pointColor = getColor(Cesium.defaultValue(options.pointColor, \"yellow\"));\n\n this.pointStyle = Cesium.defaultValue(options.pointStyle, \"Ring\"); //'Solid','Ring','Circle'\n this.labelPropertyName = Cesium.defaultValue(options.labelPropertyName, \"NAME\");\n this.ringRadius = Cesium.defaultValue(options.ringRadius, 2);\n this.circleLineWidth = Cesium.defaultValue(options.circleLineWidth, 2);\n if (Cesium.defined(options.showMaker)) {\n this.showMarker = Cesium.defaultValue(options.showMaker, true);\n }\n if (Cesium.defined(options.showMarker)) {\n this.showMarker = Cesium.defaultValue(options.showMarker, true);\n }\n\n this.showLabel = Cesium.defaultValue(options.showLabel, true);\n\n this.showCenterLabel = Cesium.defaultValue(options.showCenterLabel, false);\n this.centerLabelPropertyName = options.centerLabelPropertyName;\n\n this.labelOffsetX = Cesium.defaultValue(options.labelOffsetX, 0);\n this.labelOffsetY = Cesium.defaultValue(options.labelOffsetY, 0);\n this.markerImage = options.markerImage;\n\n this.lineDash = options.lineDash;\n //this.lineOffset = options.lineOffset;\n this.lineCap = Cesium.defaultValue(options.lineCap, \"butt\");\n this.lineJoin = Cesium.defaultValue(options.lineJoin, \"miter\");\n this.shadowColor = getColor(options.shadowColor);\n\n this.shadowBlur = options.shadowBlur;\n this.shadowOffsetX = options.shadowOffsetX;\n this.shadowOffsetY = options.shadowOffsetY;\n this.miterLimit = Cesium.defaultValue(options.miterLimit, 10);\n\n this.markerImageEl = null;\n let makerImagePromise = null;\n let deferred = Cesium.defer();\n this.readyPromise = deferred.promise;\n let that = this;\n if (typeof this.markerImage == \"string\") {\n let image = new Image();\n image.onload = function () {\n that.markerImageEl = this;\n deferred.resolve(true);\n };\n image.onerror = function (err) {\n deferred.reject(err);\n };\n image.src = this.markerImage;\n } else {\n if (this.markerImage instanceof Image || this.markerImage instanceof HTMLCanvasElement) {\n this.markerImageEl = this.markerImage;\n }\n setTimeout(function () {\n deferred.resolve(true);\n }, 10);\n }\n}\n\nVectorStyle.prototype.clone = function () {\n let style = new VectorStyle();\n for (let i in this) {\n if (this.hasOwnProperty(i)) {\n if (typeof Cesium != \"undefined\" && this[i] instanceof Cesium.Color) {\n style[i] = Cesium.Color.clone(this[i]);\n } else {\n style[i] = this[i];\n }\n }\n }\n return style;\n};\n\n/**\n *\n *@type {Cesium.VectorStyle}\n */\nVectorStyle.Default = new VectorStyle();\n","export function GetExtension(fname) {\n let start = fname.lastIndexOf(\".\");\n if (start >= 0) {\n return fname.substring(start, fname.length);\n }\n return \"\";\n}\n\nexport function GetFileName(fname) {\n let start = fname.lastIndexOf(\"/\");\n if (start < 0) {\n return fname;\n }\n return fname.substring(start + 1, fname.length);\n}\n\nexport function GetDirectoryName(fname) {\n let start = fname.lastIndexOf(\"/\");\n if (start < 0) {\n return \"\";\n }\n return fname.substring(0, start);\n}\n\nexport function Combine(dir, fname) {\n return dir + fname;\n}\nexport function ChangeExtension(fname, newExt) {\n return fname.replace(GetExtension(fname), newExt);\n}\n","export function LonLatProjection(width, height) {\n let imageSize = { width: width, height: height };\n function getBoundingRect(regions) {\n let LIMIT = Number.MAX_VALUE;\n let min, max;\n let boundingRect = { xMin: LIMIT, yMin: LIMIT, xMax: -LIMIT, yMax: -LIMIT };\n\n for (let i = 0, L = regions.length; i < L; i++) {\n let rect = regions[i].getBoundingRect();\n\n min = { x: rect.xMin, y: rect.yMin };\n max = { x: rect.xMax, y: rect.yMax };\n\n boundingRect.xMin = boundingRect.xMin < min.x ? boundingRect.xMin : min.x;\n boundingRect.yMin = boundingRect.yMin < min.y ? boundingRect.yMin : min.y;\n boundingRect.xMax = boundingRect.xMax > max.x ? boundingRect.xMax : max.x;\n boundingRect.yMax = boundingRect.yMax > max.y ? boundingRect.yMax : max.y;\n }\n\n return boundingRect;\n }\n\n function project(coordinate, boundingRect) {\n let width = boundingRect.xMax - boundingRect.xMin;\n let height = boundingRect.yMin - boundingRect.yMax;\n let distanceX = Math.abs(coordinate[0] - boundingRect.xMin);\n let distanceY = coordinate[1] - boundingRect.yMax;\n\n let percentX = distanceX / width;\n let percentY = distanceY / height;\n\n let px = percentX * imageSize.width,\n py = percentY * imageSize.height;\n return { x: px, y: py };\n }\n\n function unproject(pt, boundingRect) {\n let width = boundingRect.xMax - boundingRect.xMin;\n let height = boundingRect.yMin - boundingRect.yMax;\n let lon = (pt.x / imageSize.width) * width,\n lat = (pt.y / imageSize.height) * height;\n return [lon, lat];\n }\n\n this.project = project;\n this.unproject = unproject;\n this.getBoundingRect = getBoundingRect;\n}\n","let Point = function (x, y) {\n return { x: x, y: y };\n};\n\nexport function drawRoundedRect(rect, r, ctx) {\n let ptA = Point(rect.x + r, rect.y);\n let ptB = Point(rect.x + rect.width, rect.y);\n let ptC = Point(rect.x + rect.width, rect.y + rect.height);\n let ptD = Point(rect.x, rect.y + rect.height);\n let ptE = Point(rect.x, rect.y);\n\n ctx.beginPath();\n\n ctx.moveTo(ptA.x, ptA.y);\n ctx.arcTo(ptB.x, ptB.y, ptC.x, ptC.y, r);\n ctx.arcTo(ptC.x, ptC.y, ptD.x, ptD.y, r);\n ctx.arcTo(ptD.x, ptD.y, ptE.x, ptE.y, r);\n ctx.arcTo(ptE.x, ptE.y, ptA.x, ptA.y, r);\n\n ctx.fill();\n ctx.stroke();\n}\n","import { drawRoundedRect } from \"./drawRoundedRect\";\nimport { writeTextToCanvas } from \"mars3d-cesium\";\n\n/**\n* Writes the given text into a new canvas. The canvas will be sized to fit the text.\n* If text is blank, returns undefined.\n* - 依赖Cesium.writeTextToCanvas\n* @memberof Cesium.Util\n* @method\n* @name drawText\n* @param {String} text The text to write.\n* @param {Object} [options] Object with the following properties:\n* @param {String} [options.font='10px sans-serif'] The CSS font to use.\n* @param {String} [options.textBaseline='bottom'] The baseline of the text.\n* @param {Boolean} [options.fill=true] Whether to fill the text.\n* @param {Boolean} [options.stroke=false] Whether to stroke the text.\n* @param {Color} [options.fillColor=Cesium.Color.WHITE] The fill color.\n* @param {Color} [options.strokeColor=Cesium.Color.BLACK] The stroke color.\n* @param {Number} [options.strokeWidth=1] The stroke width.\n* @param {Color} [options.backgroundColor=Cesium.Color.TRANSPARENT] The background color of the canvas.\n* @param {Number} [options.padding=0] The pixel size of the padding to add around the text.\n* @returns {Canvas} A new canvas with the given text drawn into it. The dimensions object\n* from measureText will also be added to the returned canvas. If text is\n* blank, returns undefined.\n*@example\n var opts={\n font:'10px sans-serif',\n textBaseline:'bottom',\n fill:true,\n stroke:false,\n strokeWidth:1,\n fillColor:Cesium.Color.WHITE,\n strokeColor:Cesium.Color.BLACK,\n backgroundColor:Cesium.Color.TRANSPARENT,\n padding:0\n };\n var textCanvas=drawText('hello world',opts)\n*\n*/\nexport function drawText(text, options) {\n options = options\n ? options\n : {\n font: \"20px sans-serif\",\n };\n let backcolor = options.backgroundColor;\n let padding = options.padding ? options.padding : 0;\n delete options.backgroundColor;\n delete options.padding;\n\n let lines = text.split(/[\\r]?\\n+/);\n let lineImgs = [];\n let w = 0,\n h = 0;\n for (let i = 0; i < lines.length; i++) {\n let tempCv = writeTextToCanvas(lines[i], options);\n if (tempCv) {\n lineImgs.push(tempCv);\n h += tempCv.height;\n w = Math.max(w, tempCv.width);\n }\n }\n options.backgroundColor = backcolor;\n options.padding = padding;\n\n let cv = options.canvas;\n if (!cv) {\n w += padding * 2;\n h += padding * 2.25;\n cv = document.createElement(\"canvas\");\n cv.width = w;\n cv.height = h;\n }\n\n let ctx = cv.getContext(\"2d\");\n if (backcolor) {\n ctx.fillStyle = backcolor.toCssColorString();\n } else {\n ctx.fillStyle = undefined;\n }\n\n if (options.border) {\n ctx.lineWidth = options.borderWidth;\n ctx.strokeStyle = options.borderColor.toCssColorString();\n }\n\n if (!options.borderRadius) {\n if (backcolor) {\n ctx.fillRect(0, 0, cv.width, cv.height);\n }\n\n if (options.border) {\n ctx.strokeRect(0, 0, cv.width, cv.height);\n }\n } else {\n drawRoundedRect(\n {\n x: 0,\n y: 0,\n width: cv.width,\n height: cv.height,\n },\n options.borderRadius,\n ctx\n );\n }\n\n delete ctx.strokeStyle;\n delete ctx.fillStyle;\n let y = 0;\n for (let i = 0; i < lineImgs.length; i++) {\n ctx.drawImage(lineImgs[i], 0 + padding, y + padding);\n y += lineImgs[i].height;\n }\n return cv;\n}\n","import * as turf from \"@turf/turf\";\n\nfunction pointToPolygonDistance(pt, polygon, options) {\n let line = turf.polygonToLine(polygon);\n if (line.type == \"Feature\") {\n if (line.geometry.type == \"LineString\") {\n return turf.pointToLineDistance(pt, line, options);\n } else {\n return pointToMultiLineDistance(pt, line, options);\n }\n } else if (line.type == \"FeatureCollection\") {\n let dist = Number.MAX_VALUE;\n let fcs = line;\n turf.featureEach(fcs, function (fc) {\n let geometry = fc.geometry;\n if (!geometry) {\n return;\n }\n if (geometry.type == \"LineString\") {\n dist = Math.min(turf.pointToLineDistance(pt, line, options), dist);\n } else {\n dist = Math.min(pointToMultiLineDistance(pt, line, options), dist);\n }\n });\n if (dist == Number.MAX_VALUE) {\n return undefined;\n }\n return dist;\n }\n}\n\nfunction pointToMultiPolygonDistance(pt, multiPolygon, options) {\n let coordinates = turf.getCoords(multiPolygon);\n let lineString = null;\n let dist = Number.MAX_VALUE;\n coordinates.forEach(function (polygonCoords) {\n let polygon = turf.polygon(polygonCoords);\n let timepDist = pointToPolygonDistance(pt, polygon, options);\n dist = Math.min(timepDist, dist);\n });\n coordinates = [];\n if (dist == Number.MAX_VALUE) {\n return undefined;\n }\n\n return dist;\n}\n\nfunction pointToMultiLineDistance(pt, multiLineString, options) {\n let coordinates = turf.getCoords(multiLineString);\n let lineString = null;\n let dist = Number.MAX_VALUE;\n coordinates.forEach(function (lineCoords) {\n lineString = turf.lineString(lineCoords);\n let timepDist = turf.pointToLineDistance(pt, lineString, options);\n dist = Math.min(timepDist, dist);\n });\n coordinates = [];\n if (dist == Number.MAX_VALUE) {\n return undefined;\n }\n\n return dist;\n}\n\nexport function pointToFeatureDistance(pt, fc, options) {\n let dist = undefined;\n switch (fc.geometry.type) {\n case \"Point\":\n dist = turf.distance(pt, fc, options);\n break;\n case \"MultiPoint\":\n {\n let coordinates = turf.getCoords(fc);\n let pts = [];\n coordinates.forEach(function (coord) {\n pts.push(turf.point(coord));\n });\n pts = turf.featureCollection(pts);\n let nearest = turf.nearestPoint(pt, pts);\n pts = [];\n dist = nearest.properties.distanceToPoint;\n }\n break;\n case \"LineString\":\n dist = turf.pointToLineDistance(pt, fc, options);\n break;\n case \"MultiLineString\":\n dist = pointToMultiLineDistance(pt, fc, options);\n break;\n case \"Polygon\":\n dist = pointToPolygonDistance(pt, fc, options);\n break;\n case \"MultiPolygon\":\n dist = pointToMultiPolygonDistance(pt, fc, options);\n break;\n default:\n break;\n }\n return dist;\n}\n","export function readAsArrayBuffer(file) {\n return new Promise((resolve, reject) => {\n let fr = new FileReader();\n fr.onload = function (e) {\n resolve(e.target.result);\n };\n fr.onerror = function (e) {\n reject(e.error);\n };\n fr.readAsArrayBuffer(file);\n });\n}\n","export function readAsText(file, encoding) {\n return new Promise((resolve, reject) => {\n let fr = new FileReader();\n fr.onload = function (e) {\n resolve(e.target.result);\n };\n fr.onerror = function (e) {\n reject(e.error);\n };\n fr.readAsText(file, encoding);\n });\n}\n","import * as Cesium from \"mars3d-cesium\";\nimport shp from \"shpjs/lib/index.js\";\nimport * as Path from \"./Path\";\nimport { readAsArrayBuffer } from \"./readAsArrayBuffer\";\nimport { readAsText } from \"./readAsText\";\n\nexport function groupFiles(files) {\n let group = {};\n for (let i = 0; i < files.length; i++) {\n let name = Path.ChangeExtension(files[i].name, \"\");\n if (!group[name]) {\n group[name] = [];\n }\n group[name].push(files[i]);\n }\n return group;\n}\n\nexport function loadShp(base, whiteList) {\n return shp(base, whiteList);\n}\n\nexport function parseShpFiles(files, encoding) {\n if (!files || files.length > 0) {\n let df = Cesium.defer();\n let promise = df.promise;\n let shpFile, dbfFile, prjFile;\n\n for (let i = 0; i < files.length; i++) {\n if (files[i].name.toLocaleLowerCase().indexOf(\".shp\") > 0) {\n shpFile = files[i];\n }\n if (files[i].name.toLocaleLowerCase().indexOf(\".prj\") > 0) {\n prjFile = files[i];\n }\n if (files[i].name.toLocaleLowerCase().indexOf(\".dbf\") > 0) {\n dbfFile = files[i];\n }\n }\n\n if (!shpFile || !prjFile || !dbfFile) {\n df.reject(new Error(\"打开文件失败,请通过ctrl+同时选择shp、prj、dbf三个文件\"));\n return promise;\n }\n readAsArrayBuffer(shpFile)\n .then(function (shpBuffer) {\n readAsText(prjFile, encoding)\n .then(function (prjBuffer) {\n readAsArrayBuffer(dbfFile)\n .then(function (dbfBuffer) {\n let parsed = shp.combine([shp.parseShp(shpBuffer, prjBuffer), shp.parseDbf(dbfBuffer, encoding)]);\n parsed.fileName = shpFile.name.toLocaleLowerCase();\n\n df.resolve(parsed);\n })\n .catch(function (err) {\n df.reject(err);\n });\n })\n .catch(function (err) {\n df.reject(err);\n });\n })\n .catch(function (err) {\n df.reject(err);\n });\n\n return promise;\n } else {\n throw new Error(\"文件列表不能为空\");\n }\n}\n\nexport function isShpLocalFiles(files) {\n let isFile = files.length >= 3;\n if (!isFile) {\n return false;\n }\n let shpFile, dbfFile, prjFile;\n for (let i = 0; i < files.length; i++) {\n let file = files[i];\n if (!(file instanceof File || (file instanceof Blob && file.name))) {\n return false;\n }\n if (files[i].name.toLocaleLowerCase().indexOf(\".shp\") > 0) {\n shpFile = files[i];\n }\n if (files[i].name.toLocaleLowerCase().indexOf(\".prj\") > 0) {\n prjFile = files[i];\n }\n if (files[i].name.toLocaleLowerCase().indexOf(\".dbf\") > 0) {\n dbfFile = files[i];\n }\n }\n if (!shpFile || !prjFile || !dbfFile) {\n return false;\n }\n return true;\n}\n","import * as Cesium from \"mars3d-cesium\";\nimport * as turf from \"@turf/turf\";\nimport * as Path from \"./core/Path\";\n\nimport { LonLatProjection } from \"./core/LonLatProjection\";\nimport { drawText } from \"./core/drawText\";\nimport { pointToFeatureDistance } from \"./core/pointToFeatureDistance\";\nimport { isShpLocalFiles, loadShp, parseShpFiles } from \"./core/shp\";\nimport { VectorStyle } from \"./VectorStyle\";\n\nexport function VectorTileImageryProvider(options = {}) {\n if (!Cesium.defined(options.source)) {\n return;\n }\n\n this.options = options;\n\n let ext = null;\n let isLocalShpFile = false;\n if (typeof options.source == \"string\") {\n let source = options.source.toLowerCase();\n ext = Path.GetExtension(source);\n if (ext !== \".shp\" && ext !== \".json\" && ext !== \".geojson\" && ext !== \".topojson\") {\n throw new Error(\"The data options.source provider is not supported.\");\n }\n } else if (options.source.type && options.source.type == \"FeatureCollection\") {\n //\n } else if (isShpLocalFiles(options.source)) {\n isLocalShpFile = true;\n } else {\n throw new Error(\"The data options.source provider is not supported.\");\n }\n\n this._rectangle = options.rectangle;\n this._tilingScheme = new Cesium.GeographicTilingScheme({ ellipsoid: options.ellipsoid });\n this._tileWidth = Cesium.defaultValue(options.tileWidth, 256);\n this._tileHeight = Cesium.defaultValue(options.tileHeight, 256);\n\n this._url = options.source;\n this._fileExtension = ext;\n\n this._removeDuplicate = Cesium.defaultValue(options.removeDuplicate, true);\n this._allowPick = Cesium.defaultValue(options.allowPick, false);\n this._simplifyTolerance = Cesium.defaultValue(options.simplifyTolerance, 0.01);\n this._simplify = Cesium.defaultValue(options.simplify, false);\n //this._multipleTask = Cesium.defaultValue(options.multipleTask, true);\n //this._taskWaitTime = Cesium.defaultValue(options.taskWaitTime, 10);\n this._maximumLevel = Cesium.defaultValue(options.maximumLevel, 22);\n this._minimumLevel = Cesium.defaultValue(options.minimumLevel, 3);\n this._showMaximumLevel = Cesium.defaultValue(options.showMaximumLevel, true);\n this._makerImage = options.markerImage;\n this._tileCacheSize = Cesium.defaultValue(options.tileCacheSize, 200);\n if (typeof options.defaultStyle == \"object\" && !(options.defaultStyle instanceof VectorStyle)) {\n options.defaultStyle = new VectorStyle(options.defaultStyle);\n }\n this._defaultStyle = Cesium.defaultValue(options.defaultStyle, VectorStyle.Default.clone());\n this._styleFilter = typeof options.styleFilter == \"function\" ? options.styleFilter : undefined;\n this.clustering = options.clustering;\n\n this._errorEvent = new Cesium.Event();\n this._featuresPicked = new Cesium.Event();\n\n this._readyPromise = Cesium.defer();\n this._ready = false;\n this._state = VectorTileImageryProvider.State.READY;\n\n this._cache = {};\n this._count = 0;\n this.zIndex = options.zIndex;\n this._bbox = null;\n /**\n * 如果需要支持可以点击拾取要素进行要素查询则存储原始的geojson\n * @private\n */\n this._geoJSON = null;\n let that = this;\n let promises = [];\n if (typeof this._makerImage == \"string\") {\n promises.push(\n new Promise((resolve, reject) => {\n let image = new Image();\n image.onload = function () {\n resolve(this);\n that._makerImageEl = this;\n };\n image.onerror = function (err) {\n resolve(err);\n };\n image.src = this._makerImage;\n })\n );\n }\n\n let shpDf = Cesium.defer();\n promises.push(shpDf.promise);\n this._state = VectorTileImageryProvider.State.SHPLOADING;\n if (ext) {\n switch (ext) {\n case \".shp\":\n {\n let url = this._url;\n let ext = Path.GetExtension(url);\n url = url.replace(ext, \"\");\n loadShp(url).then(onSuccess, function (err) {\n console.log(\"load shp file error：\" + err);\n that.readyPromise.reject(err);\n });\n }\n break;\n case \".json\":\n case \".geojson\":\n case \".topojson\":\n Cesium.Resource.fetchJson(this._url)\n .then(function (geojson) {\n onSuccess(geojson);\n })\n .catch(function (err) {\n console.log(err);\n });\n break;\n default:\n throw new Error(\"The file options.source provider is not supported.\");\n }\n } else {\n if (isLocalShpFile) {\n let prms = parseShpFiles(that._url, that.options.encoding || \"gbk\");\n if (prms) {\n prms.then(onSuccess).catch(function (err) {\n this._readyPromise.reject(err);\n });\n } else {\n this._readyPromise.reject(new Error(\"The file options.source provider is not supported.\"));\n }\n } else {\n setTimeout(function () {\n if (Array.isArray(that._url)) {\n this._readyPromise.reject(new Error(\"The data options.source provide is not supported.\"));\n } else {\n onSuccess(that._url);\n }\n }, 10);\n }\n }\n\n this._lineGeoJSON = null;\n this._outlineGeoJSON = null;\n this._pointGeoJSON = null;\n this._polygonJSON = null;\n this._onlyPoint = false;\n this._lineOnly = false;\n this._polygonOnly = false;\n\n function onSuccess(geoJSON) {\n if (that._allowPick) {\n that._geoJSON = geoJSON;\n }\n let tolerance = that._simplifyTolerance;\n let lines = [],\n outlines = [],\n points = [],\n polygons = [];\n let onlyPoint = true,\n lineOnly = true,\n polygonOnly = true;\n let simplified;\n\n function groupByCenterLabelPropertyName(geoJSON, centerLabelPropertyName) {\n let dic = {};\n turf.featureEach(geoJSON, function (fc) {\n let geometry = fc.geometry;\n if (geometry) {\n return;\n }\n\n if (\n (geometry.type == \"Polygon\" || geometry.type == \"MultiPolygon\") &&\n that._defaultStyle.showCenterLabel &&\n that._defaultStyle.centerLabelPropertyName &&\n fc.properties.hasOwnProperty(centerLabelPropertyName)\n ) {\n if (!dic[fc.properties[centerLabelPropertyName]]) {\n dic[fc.properties[centerLabelPropertyName]] = [];\n }\n dic[fc.properties[centerLabelPropertyName]].push(fc);\n }\n });\n let keys = Object.keys(dic);\n for (let i = 0; i < keys.length; i++) {\n let fc = dic[keys[i]][0];\n let fcs = turf.featureCollection(dic[keys[i]]);\n let center = turf.center(fcs);\n points.push(center);\n center.properties = fc.properties;\n delete dic[keys[i]];\n }\n }\n\n if (that._defaultStyle.showCenterLabel && that._defaultStyle.centerLabelPropertyName) {\n that._defaultStyle.showLabel = true;\n that._defaultStyle.labelPropertyName = that._defaultStyle.centerLabelPropertyName;\n\n groupByCenterLabelPropertyName(geoJSON, that._defaultStyle.centerLabelPropertyName);\n }\n\n turf.featureEach(geoJSON, function (fc) {\n let geometry = fc.geometry;\n if (!geometry) {\n return;\n }\n if (geometry.type == \"MultiPolygon\") {\n let polygonCoords = turf.getCoords(fc);\n polygonCoords.forEach(function (coords) {\n geoJSON.features.push(turf.polygon(coords, fc.properties));\n });\n polygonCoords = [];\n }\n });\n\n for (let i = 0; i < geoJSON.features.length; i++) {\n let feature = geoJSON.features[i];\n if (!feature) {\n continue;\n }\n let geometry = feature.geometry;\n if (!geometry) {\n continue;\n }\n if (geometry.type == \"MultiPolygon\") {\n geoJSON.features.splice(i, 1);\n }\n }\n if (that._removeDuplicate) {\n geoJSON = turf.removeDuplicate(geoJSON);\n }\n\n turf.featureEach(geoJSON, function (feature, index) {\n let geometry = feature.geometry;\n if (!geometry) {\n return;\n }\n if (geometry.type == \"Point\" || geometry.type == \"MultiPoint\") {\n points.push(feature);\n lineOnly = false;\n polygonOnly = false;\n } else if (\n that._defaultStyle.showCenterLabel &&\n that._defaultStyle.centerLabelPropertyName &&\n geometry.type !== \"Polygon\" &&\n geometry.type !== \"MultiPolygon\"\n ) {\n that._defaultStyle.showLabel = true;\n that._defaultStyle.labelPropertyName = that._defaultStyle.centerLabelPropertyName;\n let center = turf.centerOfMass(feature);\n points.push(center);\n center.properties = feature.properties;\n }\n\n if (geometry.type == \"Polygon\" || geometry.type == \"MultiPolygon\") {\n let lineString = turf.polygonToLineString(feature);\n if (lineString) {\n if (lineString.type == \"FeatureCollection\") {\n outlines = outlines.concat(lineString.features);\n } else if (lineString.type == \"Feature\") {\n outlines = outlines.concat(lineString);\n }\n }\n\n onlyPoint = false;\n lineOnly = false;\n\n if (that._simplify) {\n simplified = turf.simplify(feature, {\n tolerance: tolerance,\n highQuality: false,\n });\n polygons.push(simplified);\n\n simplified = null;\n } else {\n polygons.push(feature);\n }\n }\n if (geometry.type == \"MultiLineString\" || geometry.type == \"LineString\") {\n if (that._simplify) {\n simplified = turf.simplify(feature, { tolerance: tolerance, highQuality: false });\n lines.push(simplified);\n\n simplified = null;\n } else {\n lines.push(feature);\n }\n onlyPoint = false;\n polygonOnly = false;\n }\n });\n\n if (lines.length > 0) {\n that._lineGeoJSON = turf.featureCollection(lines);\n lines = null;\n }\n\n if (outlines.length > 0) {\n outlines.forEach(function (outline) {\n outline.properties._outline = true;\n });\n that._outlineGeoJSON = turf.featureCollection(outlines);\n outlines = null;\n }\n\n if (points.length > 0) {\n that._pointGeoJSON = turf.featureCollection(points);\n points = null;\n }\n\n if (polygons.length > 0) {\n that._polygonJSON = turf.featureCollection(polygons);\n polygons = null;\n }\n\n that._lineOnly = lineOnly;\n that._polygonOnly = polygonOnly;\n that._onlyPoint = onlyPoint;\n that._state = VectorTileImageryProvider.State.LOADED;\n let bbox = turf.bbox(geoJSON);\n if (bbox[0] == bbox[2]) {\n bbox[0] = bbox[0] - 0.1;\n bbox[2] = bbox[2] + 0.1;\n }\n if (bbox[1] == bbox[3]) {\n bbox[1] = bbox[1] - 0.1;\n bbox[3] = bbox[3] + 0.1;\n }\n // that.rectangle = Cesium.Cesium.Rectangle.fromDegrees(that._bbox[0], that._bbox[1], that._bbox[2], that._bbox[3]);\n that._bbox = Cesium.Rectangle.fromDegrees(bbox[0], bbox[1], bbox[2], bbox[3]);\n if (!that._rectangle) {\n that._rectangle = that._bbox;\n }\n geoJSON = null;\n shpDf.resolve(that);\n }\n\n Promise.all(promises)\n .then(function () {\n that._ready = that._state == VectorTileImageryProvider.State.LOADED;\n that._createCanvas();\n VectorTileImageryProvider.instanceCount++;\n that._readyPromise.resolve(true);\n that._state = VectorTileImageryProvider.State.COMPELTED;\n })\n .catch(function (err) {\n that._readyPromise.reject(err);\n });\n}\n\n/**\n *样式设置函数\n *@callback Cesium.VectorTileImageryProvider~StyleFilterCallback\n *@param {Geojson.Feature}feature 当前要素（用Geojson.Feature存储）\n *@param {Cesium.VectorStyle}style 即将应用与当前要素的样式，可以通过修改该参数中的各样式设置选项来针对当前要素进行特殊的样式设置。\n *修改后只对当前要素有效，不会修改MeteoLib.Scene.VectorTileImageryProvider的默认样式\n *@param {Number}x\n *@param {Number}y\n *@param {Number}level\n */\n\n/**\n *聚类函数\n *@callback Cesium.VectorTileImageryProvider~clusteringCallback\n *@param {Array<Feature<Point|MultiPoint>>}features\n * @param {CanvasRenderingContext2D}context\n * @param {CanvasRenderingContext2D}tileBBox\n *@param {Number}x\n *@param {Number}y\n *@param {Number}level\n */\n\nVectorTileImageryProvider.instanceCount = 0;\nVectorTileImageryProvider._currentTaskCount = 0;\nVectorTileImageryProvider._maxTaskCount = 3;\nVectorTileImageryProvider.State = {\n READY: 0,\n SHPLOADING: 1,\n CLIPPING: 3,\n GEOJSONDRAWING: 4,\n COMPELTED: 5,\n};\n\nObject.defineProperties(VectorTileImageryProvider.prototype, {\n /**\n *\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Cesium.VectorTileImageryProvider~StyleFilterCallback}\n */\n styleFilter: {\n get: function () {\n return this._styleFilter;\n },\n set: function (val) {\n this._styleFilter = val;\n },\n },\n /**\n *\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Cesium.VectorStyle}\n * @readonly\n */\n defaultStyle: {\n get: function () {\n return this._defaultStyle;\n },\n },\n /**\n * Gets the proxy used by this provider.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Proxy}\n * @readonly\n */\n proxy: {\n get: function () {\n return undefined;\n },\n },\n\n /**\n * Gets the width of each tile, in pixels. This function should\n * not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Number}\n * @readonly\n */\n tileWidth: {\n get: function () {\n return this._tileWidth;\n },\n },\n\n /**\n * Gets the height of each tile, in pixels. This function should\n * not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Number}\n * @readonly\n */\n tileHeight: {\n get: function () {\n return this._tileHeight;\n },\n },\n\n /**\n * Gets the maximum level-of-detail that can be requested. This function should\n * not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Number}\n * @readonly\n */\n maximumLevel: {\n get: function () {\n return this._showMaximumLevel ? this._maximumLevel : 22;\n },\n },\n\n /**\n * Gets the minimum level-of-detail that can be requested. This function should\n * not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Number}\n * @readonly\n */\n minimumLevel: {\n get: function () {\n //if (this._minimumLevel <5) {\n // return this._minimumLevel;\n //}\n return 0;\n },\n },\n\n /**\n * Gets the tiling scheme used by this provider. This function should\n * not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {TilingScheme}\n * @readonly\n */\n tilingScheme: {\n get: function () {\n return this._tilingScheme;\n },\n },\n\n /**\n * Gets the rectangle, in radians, of the imagery provided by this instance. This function should\n * not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Cesium.Rectangle}\n * @readonly\n */\n rectangle: {\n get: function () {\n return this._rectangle; //_tilingScheme.rectangle;\n },\n },\n\n /**\n * Gets the tile discard policy. If not undefined, the discard policy is responsible\n * for filtering out \"missing\" tiles via its shouldDiscardImage function. If this function\n * returns undefined, no tiles are filtered. This function should\n * not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {TileDiscardPolicy}\n * @readonly\n */\n tileDiscardPolicy: {\n get: function () {\n return undefined;\n },\n },\n\n /**\n * Gets an event that is raised when the imagery provider encounters an asynchronous error. By subscribing\n * to the event, you will be notified of the error and can potentially recover from it. Event listeners\n * are passed an instance of {@link TileProviderError}.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Event}\n * @readonly\n */\n errorEvent: {\n get: function () {\n return this._errorEvent;\n },\n },\n /**\n * 要素查询有结果时，即要素被点击时触发该事件\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Event}\n * @readonly\n */\n featuresPicked: {\n get: function () {\n return this._featuresPicked;\n },\n },\n /**\n * Gets a value indicating whether or not the provider is ready for use.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Boolean}\n * @readonly\n */\n ready: {\n get: function () {\n return this._ready;\n },\n },\n\n /**\n * Gets a promise that resolves to true when the provider is ready for use.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Promise.<Boolean>}\n * @readonly\n */\n readyPromise: {\n get: function () {\n return this._readyPromise.promise;\n },\n },\n\n /**\n * Gets the credit to display when this imagery provider is active. Typically this is used to credit\n * the source of the imagery. This function should not be called before {@link Cesium.VectorTileImageryProvider#ready} returns true.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Credit}\n * @readonly\n */\n credit: {\n get: function () {\n return undefined;\n },\n },\n\n /**\n * Gets a value indicating whether or not the images provided by this imagery provider\n * include an alpha channel. If this property is false, an alpha channel, if present, will\n * be ignored. If this property is true, any images without an alpha channel will be treated\n * as if their alpha is 1.0 everywhere. When this property is false, memory usage\n * and texture upload time are reduced.\n * @memberof Cesium.VectorTileImageryProvider.prototype\n * @type {Boolean}\n * @readonly\n */\n hasAlphaChannel: {\n get: function () {\n return true;\n },\n },\n});\n\nVectorTileImageryProvider.prototype._createCanvas = function () {\n this._canvas = document.createElement(\"canvas\");\n this._canvas.width = this._tileWidth;\n this._canvas.height = this._tileHeight;\n this._context = this._canvas.getContext(\"2d\");\n if (this._defaultStyle.backgroundColor) {\n if (this._defaultStyle.backgroundColor instanceof Cesium.Color) {\n this._context.fillStyle = this._defaultStyle.backgroundColor.toCssColorString();\n } else {\n this._context.fillStyle = this._defaultStyle.backgroundColor;\n }\n this._context.fillRect(0, 0, this._canvas.width, this._canvas.height);\n }\n\n this._context.lineWidth = this._defaultStyle.lineWidth;\n if (this._defaultStyle.outlineColor instanceof Cesium.Color) {\n this._context.strokeStyle = this._defaultStyle.outlineColor.toCssColorString(); // \"rgb(255,255,0)\";\n } else {\n this._context.strokeStyle = this._defaultStyle.outlineColor; // \"rgb(255,255,0)\";\n }\n\n if (this._defaultStyle.fillColor instanceof Cesium.Color) {\n this._context.fillStyle = this._defaultStyle.fillColor.toCssColorString(); // \"rgba(0,255,255,0.0)\";\n } else {\n this._context.fillStyle = this._defaultStyle.fillColor; // \"rgba(0,255,255,0.0)\";\n }\n};\n\n//用当前瓦片（Tile）矩形裁剪geojson并返回裁剪结果\nVectorTileImageryProvider.prototype._clipGeojson = function (rectangle) {\n // let that = this;\n let bbox = [\n Cesium.Math.toDegrees(rectangle.west),\n Cesium.Math.toDegrees(rectangle.south),\n Cesium.Math.toDegrees(rectangle.east),\n Cesium.Math.toDegrees(rectangle.north),\n ];\n // let polygonBBox = turf.bboxPolygon(bbox);\n // turf.polygon([[\n // [bbox[0], bbox[1]],//sw\n // [bbox[2], bbox[1]],//se\n // [bbox[2], bbox[3]],//ne\n // [bbox[0], bbox[3]],//nw\n // [bbox[0], bbox[1]],//sw\n //]]);\n let pointsBBox = [\n [bbox[0], bbox[1]],\n [bbox[2], bbox[1]],\n [bbox[2], bbox[3]],\n [bbox[0], bbox[3]],\n [bbox[0], bbox[1]],\n ];\n for (let i = 0; i < pointsBBox.length; i++) {\n let point = turf.point(pointsBBox[i]);\n pointsBBox[i] = point;\n }\n pointsBBox = turf.featureCollection(pointsBBox);\n\n let features = [];\n if (this._pointGeoJSON) {\n //为了避免出现在边界的文字只画到一半，同时把周边切片包含的点也放在本切片绘制\n let lonW = (bbox[2] - bbox[0]) / 2,\n latH = (bbox[3] - bbox[1]) / 2;\n let polygonBBox4Points = turf.bboxPolygon([bbox[0] - lonW, bbox[1] - latH, bbox[2] + lonW, bbox[3] + latH]);\n let fcBBox = turf.featureCollection([polygonBBox4Points]);\n let pts = turf.within(this._pointGeoJSON, fcBBox);\n features = features.concat(pts.features);\n }\n let canClipGeojsons = [];\n\n if (this._polygonJSON) {\n canClipGeojsons.push(this._polygonJSON);\n }\n if (this._lineGeoJSON) {\n canClipGeojsons.push(this._lineGeoJSON);\n }\n if (this._outlineGeoJSON) {\n canClipGeojsons.push(this._outlineGeoJSON);\n }\n\n let clipped;\n function clippedExists() {\n let clippedCoords = turf.getCoords(clipped);\n let exists = false;\n for (let i = 0; i < features.length; i++) {\n let keys1 = Object.keys(clipped.properties);\n let keys2 = Object.keys(features[i].properties);\n\n if (keys1.length != keys2.length) {\n break;\n }\n let kEquals = true;\n for (let k_i = 0; k_i < keys1.length; k_i++) {\n if (keys1[k_i] != keys2[k_i]) {\n kEquals = false;\n break;\n }\n }\n if (!kEquals) {\n break;\n }\n kEquals = true;\n for (let k_i = 0; k_i < keys1.length; k_i++) {\n if (clipped.properties[keys1[k_i]] != features[i].properties[keys1[k_i]]) {\n kEquals = false;\n break;\n }\n }\n if (!kEquals) {\n break;\n }\n\n let tempCoords = turf.getCoords(features[i]);\n\n if (clippedCoords.length && clippedCoords.length == tempCoords.length) {\n let equals = true;\n for (let j = 0; j < clippedCoords.length; j++) {\n let c1 = clippedCoords[j],\n c2 = tempCoords[j];\n if (!Array.isArray(c1[0])) {\n try {\n equals = c1[0] == c2[0] && c1[1] == c2[1];\n } catch (e) {\n console.log(e);\n }\n } else if (c1.length == c2.length) {\n for (let k = 0; k < c1.length; k++) {\n if (c1[k][0] != c2[k][0] || c1[k][1] != c2[k][1]) {\n equals = false;\n break;\n }\n }\n } else {\n equals = false;\n break;\n }\n if (equals) {\n break;\n }\n }\n if (equals) {\n exists = true;\n break;\n }\n }\n }\n\n return exists;\n }\n\n canClipGeojsons.forEach(function (geojson) {\n turf.featureEach(geojson, function (currentFeature, currentIndex) {\n if (!currentFeature.geometry) {\n return;\n }\n\n clipped = null;\n try {\n //if (currentFeature.geometry.type == \"Polygon\"\n // || currentFeature.geometry.type == \"MultiPolygon\") {\n // //let fcs = turf.featureCollection([currentFeature]);\n // //if (!turf.within(pointsBBox, fcs))\n // clipped = turf.intersect(currentFeature, polygonBBox);\n // //else\n // // clipped = polygonBBox;\n // //fcs = null;\n //}\n if (!clipped) {\n clipped = turf.bboxClip(currentFeature, bbox);\n }\n if (clipped && clipped.geometry.coordinates.length > 0) {\n let empty = true;\n for (let i = 0; i < clipped.geometry.coordinates.length; i++) {\n if (clipped.geometry.coordinates[i].length > 0) {\n empty = false;\n break;\n }\n }\n if (!empty) {\n // if (!clippedExists()) {\n features.push(clipped);\n //}\n } else {\n //clipped = turf.intersect(currentFeature, polygonBBox);\n //if (clipped) {\n // features.push(clipped);\n //}\n //let fcs = turf.featureCollection([currentFeature]);\n //if (turf.within(pointsBBox, fcs)) {\n // features.push(polygonBBox);\n //}\n //fcs = null;\n }\n }\n } catch (e) {\n let coordinates = [];\n currentFeature.geometry.coordinates.forEach(function (contour) {\n if (contour.length > 3) {\n coordinates.push(contour);\n }\n });\n currentFeature.geometry.coordinates = coordinates;\n try {\n clipped = turf.bboxClip(currentFeature, bbox);\n if (clipped && clipped.geometry.coordinates.length > 0) {\n //if (!clippedExists()) {\n features.push(clipped);\n //}\n }\n } catch (error) {\n console.error(error);\n }\n }\n });\n });\n clipped = null;\n if (features.length > 0) {\n features = turf.featureCollection(features);\n return features;\n }\n return null;\n};\n\n//挖孔\nfunction createHoles(context, projection, boundingRect, x, y, holes) {\n let tileCanvas = context.canvas;\n let imgData = context.getImageData(0, 0, tileCanvas.width, tileCanvas.height);\n\n let holeMaskCanvas = document.createElement(\"canvas\");\n holeMaskCanvas.width = tileCanvas.width;\n holeMaskCanvas.height = tileCanvas.height;\n let holeMaskCtx = holeMaskCanvas.getContext(\"2d\");\n\n let mask = [];\n holes.map(function (hole) {\n holeMaskCtx.clearRect(0, 0, holeMaskCanvas.width, holeMaskCanvas.height);\n holeMaskCtx.beginPath();\n let pointIndex = 0;\n hole.map(function (coordinate) {\n let pt = projection.project(coordinate, boundingRect);\n if (pointIndex == 0) {\n holeMaskCtx.moveTo(x + pt.x, y + pt.y);\n } else {\n holeMaskCtx.lineTo(x + pt.x, y + pt.y);\n }\n pointIndex++;\n });\n holeMaskCtx.closePath();\n\n holeMaskCtx.fillStyle = \"rgba(255,255,255,1)\";\n holeMaskCtx.fill();\n mask = holeMaskCtx.getImageData(0, 0, holeMaskCanvas.width, holeMaskCanvas.height).data;\n for (let i = 3; i < mask.length; i += 4) {\n if (mask[i] > 0) {\n imgData.data[i] = 0;\n }\n }\n });\n context.putImageData(imgData, 0, 0);\n}\n\n//绘制多边形（面或线）\nfunction drawContours(context, projection, boundingRect, x, y, contours, fill, stroke, style) {\n let count = 0;\n let holes = [];\n contours.map(function (contour) {\n if (!fill || count <= 0) {\n let pointIndex = 0;\n context.beginPath();\n contour.map(function (coordinate) {\n let pt = projection.project(coordinate, boundingRect);\n if (pointIndex == 0) {\n context.moveTo(x + pt.x, y + pt.y);\n } else {\n context.lineTo(x + pt.x, y + pt.y);\n }\n pointIndex++;\n });\n\n if (fill) {\n context.closePath();\n context.fill(); //context.stroke();\n }\n if (stroke) {\n context.stroke();\n }\n } else {\n holes.push(contour);\n }\n count++;\n });\n if (fill) {\n return holes;\n } else {\n holes = null;\n }\n}\n\n//画点\nfunction drawMarker(context, projection, boundingRect, x, y, pointFeature, fill, stroke, labelPropertyName, makerStyle) {\n if (typeof labelPropertyName == \"undefined\") {\n labelPropertyName = \"NAME\";\n }\n\n let style = Object.assign(\n {\n pointSize: 3,\n fontSize: 9,\n fontFamily: \"courier\",\n color: \"rgb(0,0,0)\",\n backgroundColor: \"rgb(255,0,0)\",\n pointStyle: \"Solid\", //'Solid','Ring','Circle'\n ringRadius: 2,\n circleLineWidth: 1,\n showMarker: true,\n showLabel: true,\n labelOffsetX: 0.0,\n labelOffsetY: 0.0,\n markerSymbol: undefined,\n },\n makerStyle\n );\n\n context.font = style.fontSize + \"px \" + style.fontFamily + \" bold\";\n\n let coordinate = pointFeature.geometry.coordinates;\n\n let percentX = (coordinate[0] - boundingRect.xMin) / (boundingRect.xMax - boundingRect.xMin);\n let percentY = (coordinate[1] - boundingRect.yMax) / (boundingRect.yMin - boundingRect.yMax);\n\n let pt = { x: percentX * context.canvas.width, y: percentY * context.canvas.height };\n\n if (style.showMarker || style.showMarker) {\n let px = pt.x + x,\n py = pt.y + y;\n\n if (style.markerSymbol && (style.markerSymbol instanceof Image || style.markerSymbol instanceof HTMLCanvasElement)) {\n let textHeight = style.markerSymbol.height;\n let textWidth = style.markerSymbol.width;\n px -= textWidth / 2;\n py -= textHeight / 2;\n if (style.markerSymbol.width && style.markerSymbol.height) {\n context.drawImage(style.markerSymbol, px, py);\n }\n } else {\n px -= style.pointSize;\n py -= style.pointSize;\n context.fillStyle = style.backgroundColor;\n context.beginPath();\n context.arc(px, py, style.pointSize, 0, Math.PI * 2);\n if (style.pointStyle == \"Solid\") {\n context.fill();\n } else if (style.pointStyle == \"Circle\") {\n context.lineWidth = style.circleLineWidth;\n context.strokeStyle = style.backgroundColor;\n context.stroke();\n } else if (style.pointStyle == \"Ring\") {\n context.strokeStyle = style.backgroundColor;\n context.stroke();\n context.beginPath();\n context.arc(px, py, style.ringRadius, 0, Math.PI * 2);\n context.closePath();\n context.fill();\n }\n }\n }\n if (style.showLabel) {\n let text = pointFeature.properties[labelPropertyName];\n if (text) {\n if (typeof text != \"string\") {\n text = text.toString();\n }\n context.fillStyle = style.color;\n let px = pt.x + x + style.labelOffsetX; //+ 4,\n let py = pt.y + y + style.labelOffsetY; // + style.fontSize / 2;\n\n text = text.trim();\n let textImg = drawText(text, {\n fill: true,\n font: style.fontSize + \"px \" + style.fontFamily,\n stroke: style.labelStroke,\n strokeWidth: style.labelStrokeWidth,\n strokeColor: typeof style.labelStrokeColor == \"string\" ? Cesium.Color.fromCssColorString(style.labelStrokeColor) : style.labelStrokeColor,\n fillColor: Cesium.Color.fromCssColorString(style.color),\n });\n\n let textHeight = textImg.height;\n let textWidth = textImg.width;\n px -= textWidth / 2 + style.pointSize;\n py -= textHeight / 2 + style.pointSize;\n if (textImg.width && textImg.height) {\n context.drawImage(textImg, px, py);\n }\n }\n }\n context.restore();\n}\n\nVectorTileImageryProvider.prototype._drawGeojson = function (context, x, y, geojson, boundingRect, width, height, fill, stroke, row, col, level) {\n let that = this;\n if (typeof fill == \"undefined\") {\n fill = true;\n }\n if (typeof stroke == \"undefined\") {\n stroke = true;\n }\n if (!fill && !stroke) {\n return undefined;\n }\n if (typeof width == \"undefined\") {\n width = context.canvas.width - x;\n }\n if (typeof height == \"undefined\") {\n height = context.canvas.height - y;\n }\n\n let projection = new LonLatProjection(width, height);\n\n let style = this._defaultStyle;\n\n let makerStyle = {\n labelStroke: style.labelStroke,\n labelStrokeWidth: style.labelStrokeWidth,\n labelStrokeColor: style.labelStrokeColor,\n pointSize: style.pointSize,\n fontSize: style.fontSize,\n fontFamily: style.fontFamily,\n color: style.fontColor instanceof Cesium.Color ? style.fontColor.toCssColorString() : style.fontColor,\n backgroundColor: style.pointColor instanceof Cesium.Color ? style.pointColor.toCssColorString() : style.pointColor,\n pointStyle: style.pointStyle, //'Solid','Ring','Circle'\n ringRadius: style.ringRadius,\n circleLineWidth: style.circleLineWidth,\n showMarker: style.showMarker,\n showLabel: style.showLabel,\n labelOffsetX: style.labelOffsetX,\n labelOffsetY: style.labelOffsetY,\n markerSymbol: style.markerImage instanceof Image || style.markerImage instanceof HTMLCanvasElement ? style.markerImage : style.markerImageEl,\n };\n let holes = [];\n if (that._styleFilter) {\n turf.featureEach(geojson, function (currentFeature, currentFeatureIndex) {\n if (that._styleFilter) {\n style = that._defaultStyle.clone();\n that._styleFilter(currentFeature, style, row, col, level);\n currentFeature.style = style;\n }\n });\n geojson.features.sort(function (a, b) {\n if (a.style && a.style.lineDash) {\n return 1;\n }\n if (b.style && b.style.lineDash) {\n return -1;\n }\n return 0;\n });\n }\n\n function drawFeature(currentFeature, currentFeatureIndex) {\n if (that._styleFilter) {\n style = currentFeature.style;\n if (style.show == false) {\n return;\n }\n\n makerStyle = {\n labelStroke: style.labelStroke,\n labelStrokeWidth: style.labelStrokeWidth,\n labelStrokeColor: style.labelStrokeColor,\n pointSize: style.pointSize,\n fontSize: style.fontSize,\n fontFamily: style.fontFamily,\n color: style.fontColor instanceof Cesium.Color ? style.fontColor.toCssColorString() : style.fontColor,\n backgroundColor: style.pointColor instanceof Cesium.Color ? style.pointColor.toCssColorString() : style.pointColor,\n pointStyle: style.pointStyle, //'Solid','Ring','Circle'\n ringRadius: style.ringRadius,\n circleLineWidth: style.circleLineWidth,\n showMarker: style.showMarker,\n showLabel: style.showLabel,\n labelOffsetX: style.labelOffsetX,\n labelOffsetY: style.labelOffsetY,\n markerSymbol: style.markerImage instanceof Image || style.markerImage instanceof HTMLCanvasElement ? style.markerImage : style.markerImageEl,\n };\n } else {\n style = that._defaultStyle;\n }\n\n context.lineWidth = style.lineWidth;\n\n if (style.outlineColor instanceof Cesium.Color) {\n context.strokeStyle = style.outlineColor.toCssColorString(); // \"rgb(255,255,0)\";\n } else {\n context.strokeStyle = style.outlineColor; // \"rgb(255,255,0)\";\n }\n\n if (style.fillColor instanceof Cesium.Color) {\n context.fillStyle = style.fillColor.toCssColorString(); // \"rgba(0,255,255,0.0)\";\n } else {\n context.fillStyle = style.fillColor; // \"rgba(0,255,255,0.0)\";\n }\n\n if (style.lineDash) {\n context.setLineDash(style.lineDash);\n }\n\n context.lineCap = style.lineCap;\n if (style.shadowColor && style.shadowColor instanceof Cesium.Color) {\n context.shadowColor = style.shadowColor.toCssColorString();\n } else {\n context.shadowColor = style.shadowColor;\n }\n context.shadowBlur = style.shadowBlur;\n context.shadowOffsetX = style.shadowOffsetX;\n context.shadowOffsetY = style.shadowOffsetY;\n context.miterLimit = style.miterLimit;\n context.lineJoin = style.lineJoin;\n\n let geometry = currentFeature.geometry;\n\n if (geometry.type == \"Point\") {\n drawMarker(context, projection, boundingRect, x, y, currentFeature, fill, stroke, style.labelPropertyName, makerStyle);\n } else if (geometry.type == \"Polygon\" && style.fill) {\n let contours = turf.getCoords(currentFeature);\n let tempHoles = drawContours(context, projection, boundingRect, x, y, contours, true, false, style);\n if (tempHoles) {\n tempHoles.map(function (hole) {\n hole.style = style;\n holes.push(hole);\n });\n }\n //drawContours(context, projection, boundingRect, x, y, contours, true, false, style);\n } else if (geometry.type == \"MultiPolygon\" && style.fill) {\n let polygons;\n try {\n polygons = turf.getCoords(currentFeature);\n polygons.map(function (contours) {\n let tempHoles = drawContours(context, projection, boundingRect, x, y, contours, true, false, style);\n if (tempHoles) {\n tempHoles.map(function (hole) {\n hole.style = style;\n holes.push(hole);\n });\n }\n });\n } catch (e) {\n // console.log(e);\n }\n } else if (geometry.type == \"MultiLineString\") {\n if (currentFeature.properties._outline && !style.outline) {\n //\n } else {\n let contours = turf.getCoords(currentFeature);\n drawContours(context, projection, boundingRect, x, y, contours, false, true, style);\n contours = null;\n }\n } else if (geometry.type == \"LineString\") {\n if (currentFeature.properties._outline && !style.outline) {\n //\n } else {\n let contour = turf.getCoords(currentFeature);\n let contours = [contour];\n drawContours(context, projection, boundingRect, x, y, contours, false, true, style);\n contour = null;\n contours = null;\n }\n }\n }\n\n turf.featureEach(geojson, function (fc, idx) {\n let geometry = fc.geometry;\n if (!geometry) {\n return;\n }\n\n if (geometry.type == \"Polygon\" || geometry.type == \"MultiPolygon\") {\n drawFeature(fc, idx);\n }\n });\n if (holes && holes.length) {\n createHoles(context, projection, boundingRect, x, y, holes);\n }\n turf.featureEach(geojson, function (fc, idx) {\n let geometry = fc.geometry;\n if (!geometry) {\n return;\n }\n\n if (geometry.type == \"LineString\" || geometry.type == \"MultiLineString\") {\n drawFeature(fc, idx);\n }\n });\n\n let pointFcs = [];\n turf.featureEach(geojson, function (fc, idx) {\n let geometry = fc.geometry;\n if (!geometry) {\n return;\n }\n if (geometry.type == \"Point\" || geometry.type == \"MultiPoint\") {\n if (typeof that.clustering !== \"function\") {\n drawFeature(fc, idx);\n } else {\n pointFcs.push(fc);\n }\n }\n });\n\n let tileBBox = [boundingRect.xMin, boundingRect.yMin, boundingRect.xMax, boundingRect.yMax];\n if (typeof that.clustering == \"function\") {\n pointFcs = that.clustering(pointFcs, context, tileBBox, row, col, level);\n }\n if (pointFcs && pointFcs.length) {\n pointFcs.forEach(function (fc, idx) {\n drawFeature(fc, idx);\n });\n }\n};\n\n//判断点和绘制符号后的矩形区域是否跨瓦片\nVectorTileImageryProvider.pointIsCrossTile = function pointIsCrossTile(context, tileBBox, pointFeature, outDrawBBox) {\n if (outDrawBBox) {\n outDrawBBox.splice(0, outDrawBBox.length);\n }\n if (!pointFeature.properties) {\n return true;\n }\n if (!pointFeature.properties.symbol) {\n return true;\n }\n let symbol = pointFeature.properties.symbol;\n let coordinate = pointFeature.geometry.coordinates;\n\n let percentX = (coordinate[0] - tileBBox[0]) / (tileBBox[2] - tileBBox[0]);\n let percentY = (coordinate[1] - tileBBox[3]) / (tileBBox[1] - tileBBox[3]);\n\n let x = percentX * context.canvas.width,\n y = percentY * context.canvas.height;\n let minX = x - symbol.width / 2.0,\n maxX = x + symbol.width / 2.0;\n let minY = y - symbol.height / 2.0,\n maxY = y + symbol.height / 2.0;\n if (minX < 0 || maxX > context.canvas.width) {\n return true;\n }\n if (minY < 0 || maxY > context.canvas.height) {\n return true;\n }\n outDrawBBox[0] = minX;\n outDrawBBox[1] = minY;\n outDrawBBox[2] = maxX;\n outDrawBBox[3] = maxY;\n return false;\n};\n\n//同步导出瓦片\nVectorTileImageryProvider.prototype.requestImageSync = function (x, y, level) {\n let that = this;\n let cacheId = x + \",\" + y + \",\" + level;\n\n if (that.cache && that.cache[cacheId]) {\n return that.cache[cacheId];\n }\n let rectangle = this._tilingScheme.tileXYToRectangle(x, y, level);\n let boundingRect = {\n xMin: Cesium.Math.toDegrees(rectangle.west),\n yMin: Cesium.Math.toDegrees(rectangle.south),\n xMax: Cesium.Math.toDegrees(rectangle.east),\n yMax: Cesium.Math.toDegrees(rectangle.north),\n };\n\n let clippedGeojson = that._clipGeojson(rectangle);\n\n if (!clippedGeojson) {\n if (that._onlyPoint || (that._polygonOnly && that._defaultStyle.fill)) {\n return getEmpty(that._defaultStyle.backgroundColor);\n } else {\n return undefined;\n }\n } else {\n that._createCanvas();\n if (!that._defaultStyle.backgroundColor) {\n that._context.clearRect(0, 0, that._canvas.width, that._canvas.height);\n }\n that._drawGeojson(that._context, 0, 0, clippedGeojson, boundingRect, that._tileWidth, that._tileHeight, that._fill, that._outline, x, y, level);\n return that._canvas;\n }\n};\n\nVectorTileImageryProvider.prototype._createTileImage = function (x, y, level, rectangle, defer) {\n let that = this;\n let cacheId = x + \",\" + y + \",\" + level;\n\n let boundingRect = {\n xMin: Cesium.Math.toDegrees(rectangle.west),\n yMin: Cesium.Math.toDegrees(rectangle.south),\n xMax: Cesium.Math.toDegrees(rectangle.east),\n yMax: Cesium.Math.toDegrees(rectangle.north),\n };\n this._state = VectorTileImageryProvider.State.CLIPPING;\n requestAnimationFrame(function () {\n let clippedGeojson = that._clipGeojson(rectangle);\n\n if (!clippedGeojson) {\n if (that._onlyPoint) {\n defer.resolve(getEmpty(that._defaultStyle.backgroundColor));\n } else {\n defer.resolve(undefined);\n }\n that._state = VectorTileImageryProvider.State.COMPELTED;\n VectorTileImageryProvider._currentTaskCount--;\n } else {\n Cesium.requestAnimationFrame(function () {\n that._state = VectorTileImageryProvider.State.GEOJSONDRAWING;\n that._createCanvas();\n if (!that._defaultStyle.backgroundColor) {\n that._context.clearRect(0, 0, that._canvas.width, that._canvas.height);\n }\n\n //if (level < 8) {\n // let v = 1.5 / Math.pow(2, (level + 0));\n // try {\n // clippedGeojson = turf.simplify(clippedGeojson, v);\n // } catch (e) {\n\n // }\n\n //}\n\n that._drawGeojson(\n that._context,\n 0,\n 0,\n clippedGeojson,\n boundingRect,\n that._tileWidth,\n that._tileHeight,\n that._fill,\n that._outline,\n x,\n y,\n level\n );\n\n that.cache[cacheId] = that._canvas;\n that.cache[cacheId].srcJson = clippedGeojson;\n that.cacheCount++;\n VectorTileImageryProvider._currentTaskCount--;\n\n defer.resolve(that._canvas);\n\n Cesium.requestAnimationFrame(function () {\n that._state = VectorTileImageryProvider.State.COMPELTED;\n });\n });\n }\n });\n};\n\nVectorTileImageryProvider.prototype.clearCache = function () {\n let provider = this;\n for (let cacheId in provider.cache) {\n if (provider.cache.hasOwnProperty(cacheId)) {\n provider.cache[cacheId].srcJson = null;\n delete provider.cache[cacheId];\n }\n }\n provider.cache = {};\n provider.cacheCount = 0;\n};\n\nVectorTileImageryProvider.prototype._getTileImage = function (x, y, level, rectangle) {\n let defer = Cesium.defer();\n let that = this;\n\n //从缓存中查询\n let cacheId = x + \",\" + y + \",\" + level;\n if (!that.cacheCount) {\n that.cacheCount = 0;\n }\n if (!that.cache || that.cacheCount > that._tileCacheSize) {\n for (let cacheId in that.cache) {\n if (that.cache.hasOwnProperty(cacheId)) {\n that.cache[cacheId].srcJson = null;\n delete that.cache[cacheId];\n }\n }\n that.cache = {};\n that.cacheCount = 0;\n }\n if (that.cache[cacheId]) {\n return that.cache[cacheId];\n }\n\n //处理并发\n if (VectorTileImageryProvider._maxTaskCount < VectorTileImageryProvider._currentTaskCount) {\n return undefined;\n }\n VectorTileImageryProvider._currentTaskCount++;\n that._state = VectorTileImageryProvider.State.READY;\n setTimeout(function () {\n return that._createTileImage(x, y, level, rectangle, defer);\n }, 1);\n return defer.promise;\n};\n\nlet emptycv;\nfunction getEmpty(bgColor) {\n if (!emptycv) {\n emptycv = document.createElement(\"canvas\");\n emptycv.width = 256;\n emptycv.height = 256;\n }\n if (bgColor) {\n let ctx = emptycv.getContext(\"2d\");\n\n if (bgColor instanceof Cesium.Color) {\n ctx.fillStyle = bgColor.toCssColorString();\n } else {\n ctx.fillStyle = bgColor;\n }\n\n ctx.fillRect(0, 0, emptycv.width, emptycv.height);\n } else {\n let ctx = emptycv.getContext(\"2d\");\n ctx.clearRect(0, 0, emptycv.width, emptycv.height);\n }\n return emptycv;\n}\n\nVectorTileImageryProvider.prototype.requestImage = function (x, y, level, distance) {\n if (!this._ready || this._state != VectorTileImageryProvider.State.COMPELTED) {\n return undefined;\n }\n if (level < this._minimumLevel) {\n this._createCanvas();\n this._context.clearRect(0, 0, this._tileWidth, this._tileHeight);\n return this._canvas;\n } else if (level > this._maximumLevel) {\n return getEmpty(this._defaultStyle.backgroundColor);\n }\n let rectangle = this.tilingScheme.tileXYToRectangle(x, y, level);\n return this._getTileImage(x, y, level, rectangle);\n};\n\n//合并图层并出图\nVectorTileImageryProvider.compose = function (vectorTileImageryProviders, rectangle, level, tileWidth, tileHeight) {\n tileWidth = tileWidth ? tileWidth : 256;\n tileHeight = tileHeight ? tileHeight : 256;\n\n vectorTileImageryProviders.sort(function (a, b) {\n if (!Cesium.defined(a.zIndex)) {\n return -1;\n }\n if (!Cesium.defined(b.zIndex)) {\n return 1;\n }\n return a.zIndex - b.zIndex;\n });\n\n let tilingScheme = new Cesium.GeographicTilingScheme();\n\n let nw = Cesium.Rectangle.northwest(rectangle);\n let se = Cesium.Rectangle.southeast(rectangle);\n let lt = tilingScheme.positionToTileXY(nw, level);\n let rb = tilingScheme.positionToTileXY(se, level);\n\n let w = (rb.x - lt.x + 1) * tileWidth,\n h = (rb.y - lt.y + 1) * tileHeight;\n let cv = document.createElement(\"canvas\");\n cv.width = w;\n cv.height = h;\n let context = cv.getContext(\"2d\");\n for (let li = 0; li < vectorTileImageryProviders.length; li++) {\n for (let x = lt.x, i = 0; x <= rb.x; x++, i++) {\n for (let y = lt.y, j = 0; y <= rb.y; y++, j++) {\n let px = i * tileWidth,\n py = j * tileHeight;\n let provider = vectorTileImageryProviders[li];\n\n try {\n let image = provider.requestImageSync(x, y, level);\n if (image && image.width && image.height) {\n context.drawImage(image, px, py, tileWidth, tileHeight);\n }\n } catch (e) {\n console.error(e);\n }\n }\n }\n }\n\n return cv;\n};\n\n//重写此函数，实现：要素被点击时准备好并返回要素查询结果信息。\n// VectorTileImageryProvider.prototype.prepareFeatureInfo = function (feature, x, y, level, longitude, latitude) {\n// return undefined;\n// };\n\nlet scratchRect = new Cesium.Rectangle();\n\n//实现Cesium.ImageryProvidery要素查询（拾取）接口，除了返回结果可以在Cesium内置的InfoBox显示之外，还触发featuresPicked事件。\nVectorTileImageryProvider.prototype.pickFeatures = function (x, y, level, longitude, latitude) {\n let that = this;\n let pickedFeatures = [];\n if (!this._allowPick || !this._geoJSON) {\n that._featuresPicked.raiseEvent(that, undefined);\n return pickedFeatures;\n }\n this.tilingScheme.tileXYToRectangle(x, y, level, scratchRect);\n let res = turf.radiansToLength(scratchRect.width / 256, \"kilometers\"); //分辨率，单位公里，即当前视图下一个像素点边长所表示距离\n\n let pt = turf.point([Cesium.Math.toDegrees(longitude), Cesium.Math.toDegrees(latitude)]);\n\n let style = this.defaultStyle;\n\n turf.featureEach(this._geoJSON, function (fc) {\n let srcFc = fc;\n let found = false;\n let geometry = fc.geometry;\n if (!geometry) {\n return;\n }\n\n if (style.fill && (geometry.type == \"Polygon\" || geometry.type == \"MultiPolygon\")) {\n if (turf.booleanPointInPolygon(pt, fc)) {\n found = true;\n }\n } else {\n let dist = pointToFeatureDistance(pt, fc, { units: \"kilometers\" });\n\n if (\n (style.outline && (geometry.type == \"Polygon\" || geometry.type == \"MultiPolygon\")) ||\n geometry.type == \"LineString\" ||\n geometry.type == \"MultiLineString\"\n ) {\n found = dist <= res * 2.0;\n } else if (style.showMarker && (geometry.type == \"Point\" || geometry.type == \"MultiPoint\")) {\n switch (style.pointStyle) {\n case \"Solid\":\n found = dist <= style.pointSize * 2.0;\n break;\n case \"Ring\":\n case \"Circle\":\n found = dist <= (style.circleLineWidth + style.ringRadius) * 2.0;\n break;\n default:\n break;\n }\n }\n }\n\n if (found) {\n //查找成功\n let fcInfo = new Cesium.ImageryLayerFeatureInfo();\n fcInfo.data = srcFc;\n fcInfo.description = JSON.stringify(srcFc.properties, null, 2);\n if (style.labelPropertyName) {\n fcInfo.name = srcFc.properties[style.labelPropertyName];\n } else if (style.centerLabelPropertyName) {\n fcInfo.name = srcFc.properties[style.centerLabelPropertyName];\n }\n\n let srcGeometry = srcFc.geometry;\n if (srcGeometry.type == \"Point\" || srcGeometry.type == \"MultiPoint\") {\n fcInfo.position = new Cesium.Cartographic(longitude, latitude);\n } else {\n let centroidPt = turf.centroid(srcFc);\n let coord = turf.getCoords(centroidPt);\n fcInfo.position = Cesium.Cartographic.fromDegrees(coord[0], coord[1]);\n }\n pickedFeatures.push(fcInfo);\n }\n });\n\n if (pickedFeatures.length) {\n let df = Cesium.defer();\n let startTime = new Date();\n\n Promise.all(pickedFeatures)\n .then(function (pickedFeatures) {\n let timespan = new Date() - startTime;\n if (timespan < 100) {\n setTimeout(function () {\n that._featuresPicked.raiseEvent(that, pickedFeatures);\n df.resolve(pickedFeatures);\n }, 100);\n } else {\n that._featuresPicked.raiseEvent(that, pickedFeatures);\n df.resolve(pickedFeatures);\n }\n })\n .catch(function (err) {\n console.error(err);\n that._featuresPicked.raiseEvent(that, undefined);\n });\n return df.promise;\n } else {\n that._featuresPicked.raiseEvent(that, undefined);\n return pickedFeatures;\n }\n};\n\nVectorTileImageryProvider.prototype.destroy = function () {\n for (let key in this) {\n if (this.hasOwnProperty(key)) {\n delete this[key];\n }\n }\n};\n","export { VectorStyle } from \"./VectorStyle\";\nexport { VectorTileImageryProvider } from \"./VectorTileImageryProvider\";\n"],"sourceRoot":""}
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