fit static method

Implementation

static ByteArray fit(dynamic bytes, int length) {
  if (bytes is String) {
    final value = BigInt.parse(bytes);
    final result = Uint8List(length);
    BigInt remaining = value;
    for (int i = 0; i < length; i++) {
      result[i] = (remaining & BigInt.from(0xff)).toInt();
      remaining = remaining >> 8;
    }
    return result;
  } else if (bytes is ByteArray) {
    final result = Uint8List(length);
    final copyLength = bytes.length < length ? bytes.length : length;
    result.setRange(0, copyLength, bytes);
    return result;
  } else {
    throw ArgumentError('Input must be a String or ByteArray');
  }
}