Flutter文字游戏或拼写检查插件scrabble的使用

Flutter文字游戏或拼写检查插件scrabble的使用

简介

Scrabble 提供了一个API和命令行工具，用于查找并计算SOWPODS字典（参见https://en.wikipedia.org/wiki/Collins_Scrabble_Words）中合法的Scrabble单词。

• API 包含以下方法：

  • 查找 合法单词，可能包括通配符’?’。
  • 获取一个字符串的所有合法变位词，可能包括通配符’?’。
  • 获取一个单词的分数。

• 命令行工具提供了从命令行访问API的方法。

安装Scrabble

1. 添加依赖 在你的包的pubspec.yaml文件中添加以下内容：

   dependencies:
     scrabble: ^0.1.0
   

2. 安装依赖 使用命令行安装包：

   $ dart pub get
   

3. 导入库 在Dart代码中导入：

   import 'package:scrabble/scrabble.dart';
   

4. 安装命令行工具 激活命令：

   $ dart pub global activate scrabble
   

   如果这不起作用，你可能需要设置你的路径（请参考https://dart.dev/tools/pub/cmd/pub-global#running-a-script-from-your-path）。

示例

命令行示例

命令行工具有许多选项，如帮助文本所示，运行：

$ dart run scrabble --help
...

此示例查找包含’a’, ‘b’和通配符’?'的三个字母单词。

$ dart run scrabble lookup --expand ab?
Lookup ab? {aba, abb, abo, abs, aby}
Score aba = 5
Score abb = 7
Score abo = 5
Score abs = 5
Score aby = 8

Dart示例

查看example/example.dart：

import 'package:scrabble/scrabble.dart';

void main(List<String> args) {
  final scrabble = Scrabble();
  // 查找参数
  for (var word in args) {
    var matches = scrabble.lookup(word, expand: true);
    printMatches(scrabble, 'Lookup', word, matches);
  }
  // 获取参数的变位词
  for (var word in args) {
    var matches = scrabble.anagram(word, expand: true, sort: true);
    printMatches(scrabble, 'Anagram', word, matches);
  }
}

// 打印匹配项及其得分
void printMatches(
    Scrabble scrabble, String command, String word, Set<String> matches) {
  print('$command $word $matches');
  for (var match in matches) {
    print('Score $match = ${scrabble.score(match)}');
  }
}

运行示例：

$ cd example
$ dart run example.dart abc
Lookup abc {}
Anagram abc {ab, ba, bac, cab}
Score ab = 4
Score ba = 4
Score bac = 7
Score cab = 7
$

Web示例

查看example/web/web.dart。

这是一个修改后的Scrabble示例，参考自https://dart.dev/tutorials/web/low-level-html/add-elements#moving-elements，使用了Scrabble包。

运行示例：

$ cd example
$ webdev serve web
[INFO] There was output on stdout while compiling the build script snapshot, run with `--verbose` to see it (you will ne
[WARNING] Throwing away cached asset graph because the build phases have changed. This most commonly would happen as a result of adding a new dependency or updating your dependencies.
[WARNING] Throwing away cached asset graph because the language version of some package(s) changed. This would most commonly happen when updating dependencies or changing your min sdk constraint.
[INFO] Cleaning up outputs from previous builds. completed, took 614ms
[INFO] There was output on stdout while compiling the build script snapshot, run with `--verbose` to see it (you will ne
[INFO] Building new asset graph completed, took 2.7s
[INFO] Checking for unexpected pre-existing outputs. completed, took 5ms
[INFO] Serving `web` on http://127.0.0.1:8080
[INFO] Generating SDK summary completed, took 8.2s
[WARNING] No actions completed for 15.0s, waiting on:
  - build_web_compilers:sdk_js on asset:build_web_compilers/$package$
  - build_web_compilers:entrypoint on web/web.dart

[INFO] Running build completed, took 42.4s
[INFO] Caching finalized dependency graph completed, took 305ms
[INFO] Succeeded after 42.7s with 879 outputs (2958 actions)
[INFO] ----------------------------------------------------------------------------------------------------------------
[INFO] Injected debugging metadata for entrypoint at http://localhost:8080/web.dart.bootstrap.js

然后打开页面http://127.0.0.1:8080。

包开发

此文档仅用于包的开发，不是使用包所必需的。

包在开发时将明文字典文件（lib/sowpods.txt）转换为压缩字符串缓冲区，使用Dart的builder_runner包和命令：

dart run build_runner build