getPinyinE static method

String getPinyinE(String str, { String separator = ' ', String defPinyin = ' ', PinyinFormat format = PinyinFormat.WITHOUT_TONE, })

将字符串转换成相应格式的拼音 (不能转换的字拼音默认用' '替代 ) @param str 需要转换的字符串 @param separator 拼音分隔符 def: ' ' @param defPinyin 默认拼音 def: ' ' @param format 拼音格式 def: PinyinFormat.WITHOUT_TONE @return 字符串的拼音(成都 cheng du)

Implementation

static String getPinyinE(
  String str, {
  String separator = ' ',
  String defPinyin = ' ',
  PinyinFormat format = PinyinFormat.WITHOUT_TONE,
}) {
  if (str.isEmpty) return '';
  StringBuffer sb = StringBuffer();
  str = ChineseHelper.convertToSimplifiedChinese(str);
  int strLen = str.length;
  int i = 0;
  while (i < strLen) {
    String subStr = str.substring(i);
    MultiPinyin? node = convertToMultiPinyin(subStr, separator, format);
    if (node == null) {
      String _char = str[i];
      if (ChineseHelper.isChinese(_char)) {
        List<String> pinyinArray = convertToPinyinArray(_char, format);
        if (pinyinArray.isNotEmpty) {
          sb.write(pinyinArray[0]);
        } else {
          sb.write(defPinyin);
          print(
              "### Can't convert to pinyin: $_char , defPinyin: $defPinyin");
        }
      } else {
        sb.write(_char);
      }
      if (i < strLen) {
        sb.write(separator);
      }
      i++;
    } else {
      sb.write(node.pinyin);
      i += node.word!.length;
    }
  }
  String res = sb.toString();
  return ((res.endsWith(separator) && separator != '')
      ? res.substring(0, res.length - 1)
      : res);
}