verifyBytes method

@override void verifyBytes(Uint8List data)

Check if the Barcode is valid. Throws BarcodeException with a proper message in case of error

Implementation

@override
void verifyBytes(Uint8List data) {
  var text = utf8.decoder.convert(data);

  if (fixedLength != null) {
    text = checkLength(text, maxLength);
  } else {
    if (zeroPrepend && ((text.length % 2 != 0) != addChecksum)) {
      text = '0$text';
    }

    if (addChecksum) {
      text += checkSumModulo10(text);
    }
  }

  if (text.length % 2 != 0) {
    throw BarcodeException(
        '$name barcode can only encode an even number of digits.');
  }

  super.verifyBytes(utf8.encoder.convert(text));
}