Function decodeUTF16

src/handlers/textEncoding.ts:20–36

(bytes: Uint8Array, littleEndian: boolean)

}

function decodeUTF16(bytes: Uint8Array, littleEndian: boolean) {
  const dv = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
  let out = "";
  for (let i = 0; i + 2 <= dv.byteLength; ) {
    const w1 = dv.getUint16(i, littleEndian);
    i += 2;
    if (w1 >= 0xd800 && w1 <= 0xdbff && i + 2 <= dv.byteLength) {
      const w2 = dv.getUint16(i, littleEndian);
      i += 2;
      const cp = (((w1 - 0xd800) << 10) | (w2 - 0xdc00)) + 0x10000;
      out += String.fromCodePoint(cp);
    } else {
      out += String.fromCharCode(w1);
    }
  }
  return out;
}

function encodeUTF16(str: string, littleEndian: boolean, addBOM = false) {
  // count code units