简繁体转换

trans_demo.dart

import 'dart:convert';
import 'dart:io';

void main(List<String> arguments) {
  get('卡号登陆舰安理会的', func: TransType.ZH_HANT)
      .then((value) => print(value))
      .catchError((e) => print(e));
}

Future<R> get(
  final String value, {
  final TransType func = TransType.ZH_HANT,
}) async {
  final url = 'https://tool.lu/zhconvert/ajax.html';
  final httpClient = HttpClient();
  final request = await httpClient.postUrl(Uri.parse(url));
  request.headers
      .set(HttpHeaders.contentTypeHeader, 'application/x-www-form-urlencoded');
  request.headers.set(HttpHeaders.refererHeader, 'https://tool.lu/zhconvert/');
  request.headers.set(HttpHeaders.userAgentHeader,
      'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36');
  final encVal = Uri.encodeComponent(value);
  request.add(utf8.encode('code=$encVal&operate=${func.fun}'));
  final response = await request.close();
  if (response.statusCode == 200) {
    final result = await response.transform(utf8.decoder).join();
    final retMap = jsonDecode(result);
    if (retMap['status'] == true) {
      return R.s(retMap['text']);
    } else {
      return R.e(retMap['message']);
    }
  } else {
    return R.e('请求失败');
  }
}

class TransType {
  final String fun;
  final String desc;

  const TransType._(this.fun, this.desc);

  static const ZH_HANS = TransType._('zh-hans', '简体中文');
  static const ZH_HANT = TransType._('zh-hant', '繁體中文');
  static const ZH_CN = TransType._('zh-cn', '大陆简体');
  static const ZH_TW = TransType._('zh-tw', '台灣正體');
  static const ZH_HK = TransType._('zh-hk', '港澳繁體');
}

class R {
  final bool success;
  final String msg;
  final String data;

  @override
  String toString() {
    return 'R{success: $success, msg: $msg, data: $data}';
  }

  const R._(this.success, this.msg, this.data);

  static R s(final String data) {
    return R._(true, 'success', data);
  }

  static R e(final String msg) {
    return R._(true, msg, null);
  }
}