/*
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* Copyright (c) Microsoft Corporation. All rights reserved.
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* Licensed under the MIT License.
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*/
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/**
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* Class which exposes APIs to encode plaintext to base64 encoded string. See here for implementation details:
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* https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding#Solution_2_%E2%80%93_JavaScript's_UTF-16_%3E_UTF-8_%3E_base64
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*/
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/**
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* Returns URL Safe b64 encoded string from a plaintext string.
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* @param input
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*/
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export function urlEncode(input: string): string {
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return encodeURIComponent(
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base64Encode(input)
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.replace(/=/g, "")
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.replace(/\+/g, "-")
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.replace(/\//g, "_")
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);
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}
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/**
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* Returns URL Safe b64 encoded string from an int8Array.
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* @param inputArr
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*/
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export function urlEncodeArr(inputArr: Uint8Array): string {
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return base64EncArr(inputArr)
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.replace(/=/g, "")
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.replace(/\+/g, "-")
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.replace(/\//g, "_");
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}
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/**
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* Returns b64 encoded string from plaintext string.
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* @param input
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*/
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export function base64Encode(input: string): string {
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return base64EncArr(new TextEncoder().encode(input));
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}
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/**
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* Base64 encode byte array
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* @param aBytes
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*/
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function base64EncArr(aBytes: Uint8Array): string {
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const binString = Array.from(aBytes, (x) => String.fromCodePoint(x)).join(
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""
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);
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return btoa(binString);
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}
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