isValidIP method

bool isValidIP()

判断字符串是否为合法的IP地址（支持IPv4和IPv6）

Implementation

bool isValidIP() {
  // IPv4正则表达式
  final ipv4Pattern = RegExp(
    r'^(\d{1,3}\.){3}\d{1,3}$',
  );

  // IPv6正则表达式
  final ipv6Pattern = RegExp(
    r'^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$',
  );

  // 检查是否为IPv4地址
  if (ipv4Pattern.hasMatch(this)) {
    final parts = split('.');
    for (final part in parts) {
      final number = int.parse(part);
      if (number < 0 || number > 255) {
        return false;
      }
    }
    return true;
  }

  // 检查是否为IPv6地址
  if (ipv6Pattern.hasMatch(this)) {
    return true;
  }

  return false;
}