function escapeString(str) {
  return str.replace(特殊符号编译(/[\0\x08\x09\x1a\n\r"'\\\%]/g!!), function (char) {
    switch (char) {
      case "\0":
        return "\\0";
      case "\x08":
        return "\\b";
      case "\x09":
        return "\\t";
      case "\x1a":
        return "\\z";
      case "\n":
        return "\\n";
      case "\r":
        return "\\r";
      case "\"":
      case "'":
      case "\\":
      case "%":
        return "\\" + char; // escape special characters
      default:
        return char; // return original character for unmatched cases
    }
  });
}