package nodomain.freeyourgadget.gadgetbridge.test;
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import java.io.FilterInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import androidx.annotation.NonNull;
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class HexToBinaryInputStream extends FilterInputStream {
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HexToBinaryInputStream(InputStream in) {
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super(in);
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}
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@Override
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public int read() throws IOException {
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int value;
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StringBuilder buffer = new StringBuilder(4);
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loop:
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while (true) {
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value = super.read();
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switch (value) {
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case -1:
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case ' ':
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case '\r':
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case '\n':
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break loop;
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default:
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buffer.append((char) value);
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}
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}
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if (buffer.length() > 0) {
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return Integer.decode(buffer.toString());
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}
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return -1;
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}
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@Override
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public int read(@NonNull byte[] b, int off, int len) throws IOException {
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if (off < 0 || len < 0 || len > b.length - off) {
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throw new IndexOutOfBoundsException();
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}
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for (int i = 0; i < len; i++) {
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int value = read();
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if (value == -1) {
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return i;
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}
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b[off + i] = (byte) value;
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}
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return len;
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}
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}
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