decode method

String decode(String morse)

电码转字符

Implementation

String decode(String morse) {
  if (morse.trim().isEmpty) return "";
  List<String> splitList = morse.split(_split);
  StringBuffer textBuffer = StringBuffer();
  for (String s in splitList) {
    try {
      if (s.isNotEmpty) {
        String codePoint = s.replaceAll(_dit, '0').replaceAll(_dah, '1');
        String? word = "";
        //判断_dictionaries字典中是否包含此值
        if (_dictionaries.containsValue(codePoint)) {
          codePoint = _dictionaries[codePoint];
        } else {
          //将二进制转成uniCode值，dart中unitCode值是十进制
          word = int.tryParse(codePoint, radix: 2)?.toRadixString(10);
        }
        //将uniCode码转成对应的字符
        textBuffer.writeCharCode(int.tryParse(word ?? "") ?? 0);
      }
    } catch (e) {
      print("解码错误:$e");
    }
  }
  return textBuffer.toString();
}