convert method

@override String convert(List<int> input)

Converts input and returns the result of the conversion.

Implementation

@override
convert(input) {
  List<int> result = [];
  for (int i = 0; i < input.length; i++) {
    final c1 = input[i];
    List<int>? c2;
    if (c1 <= 0x7F) {
      // ASCII Compatible (partially)
      c2 = utfToShiftJisTable[c1];
    } else if (c1 >= 0xa1 && c1 <= 0xdf) {
      // Half-width Hiragana
      c2 = utfToShiftJisTable[c1];
    } else if (c1 >= 0x81 && c1 <= 0x9f) {
      // JIS X 0208
      c2 = utfToShiftJisTable[(c1 << 8) + input[++i]];
    } else if (c1 >= 0xe0 && c1 <= 0xef) {
      // JIS X 0208
      c2 = utfToShiftJisTable[(c1 << 8) + input[++i]];
    } else {
      // Unknown
    }
    if (c2 != null) {
      result.addAll(c2);
    } else if (_allowMalformed) {
      result.add(unicodeReplacementCharacterRune);
    } else {
      throw FormatException('Unfinished Shift-JIS octet sequence', input, i);
    }
  }
  return utf8.decode(result, allowMalformed: _allowMalformed);
}