decode static method

String decode(String text)

Implementation

static String decode(String text) {
  var codes = <int>[];
  var bytes = <int>[];
  var len = text.length;
  for (var i = 0; i < len; i++) {
    var codeUnit = text.codeUnitAt(i);
    if (codeUnit == _PERCENT) {
      if (i + 3 > text.length) {
        bytes.add(_PERCENT);
        continue;
      }
      var hexdecoded = _hexCharPairToByte(text, i + 1);
      if (hexdecoded > 0) {
        bytes.add(hexdecoded);
        i += 2;
      } else {
        bytes.add(_PERCENT);
      }
    } else {
      if (bytes.isNotEmpty) {
        codes.addAll(
          const Utf8Decoder(allowMalformed: true).convert(bytes).codeUnits,
        );
        bytes.clear();
      }
      if (codeUnit == _PLUS) {
        codes.add(_SPACE);
      } else {
        codes.add(codeUnit);
      }
    }
  }

  if (bytes.isNotEmpty) {
    codes.addAll(const Utf8Decoder().convert(bytes).codeUnits);
    bytes.clear();
  }
  return String.fromCharCodes(codes);
}