src/arrayUtils.js

/**
 * @license
 * Copyright 2017 The Emscripten Authors
 * SPDX-License-Identifier: MIT
 */

/** @type {function(string, boolean=, number=)} */
function intArrayFromString(stringy, dontAddNull, length) {
  var len = length > 0 ? length : lengthBytesUTF8(stringy)+1;
  var u8array = new Array(len);
  var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
  if (dontAddNull) u8array.length = numBytesWritten;
  return u8array;
}

function intArrayToString(array) {
  var ret = [];
  for (var i = 0; i < array.length; i++) {
    var chr = array[i];
    if (chr > 0xFF) {
#if ASSERTIONS
      assert(false, `Character code ${chr} (${String.fromCharCode(chr)}) at offset ${i} not in 0x00-0xFF.`);
#endif
      chr &= 0xFF;
    }
    ret.push(String.fromCharCode(chr));
  }
  return ret.join('');
}