encode method

String encode(
  1. String text
)

字符转电码

Implementation

String encode(String text) {
  if (text.trim().isEmpty) return "";
  StringBuffer stringBuffer = StringBuffer();
  String tempText = text.toUpperCase();

  for (int i = 0; i < tempText.length; i++) {
    int codePoint = tempText.codeUnitAt(i); //此处获取的是unitCode值，十进制数值
    String word = "";
    //先判断_alphabets当前字符是否在标准摩尔斯电码表字典中
    if (_alphabets.containsKey(codePoint)) {
      word = _alphabets[codePoint];
    } else {
      //将uniCode十进制值转成二进制值
      word = codePoint.toRadixString(2);
    }
    stringBuffer.write(word.replaceAll('0', _dit).replaceAll('1', _dah));
    stringBuffer.write(_split);
  }
  return stringBuffer.toString();
}