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Diffstat (limited to '2024/06/06/NET-AOT-下的-F-命令行参数解析库选择')
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diff --git a/2024/06/06/NET-AOT-下的-F-命令行参数解析库选择/index.html b/2024/06/06/NET-AOT-下的-F-命令行参数解析库选择/index.html index 68a607bf..1c605526 100644 --- a/2024/06/06/NET-AOT-下的-F-命令行参数解析库选择/index.html +++ b/2024/06/06/NET-AOT-下的-F-命令行参数解析库选择/index.html @@ -192,9 +192,12 @@ </div> </div> <div class="post-content"> - <p>Argu 不支持 AOT，不过用 F# 的话可以看整个 .NET 的生态，我看了一下 C# 的 CommandLineParser：<br><a target="_blank" rel="noopener" href="https://github.com/commandlineparser">https://github.com/commandlineparser</a></p> -<p>在这个 PR 中支持了 Native AOT<br><a target="_blank" rel="noopener" href="https://github.com/commandlineparser/commandline/pull/913">https://github.com/commandlineparser/commandline/pull/913</a></p> -<p>除此之外，还有一个更加精巧的 F# 库可以用，只有两百多行：<br><a target="_blank" rel="noopener" href="https://github.com/B2R2-org/FsOptParse/">https://github.com/B2R2-org/FsOptParse/</a></p> + <p>Argu 不支持 AOT，不过用 F# 的话可以看整个 .NET 的生态，我看了一下 C# 的 CommandLineParser：<br> +<a target="_blank" rel="noopener" href="https://github.com/commandlineparser">https://github.com/commandlineparser</a></p> +<p>在这个 PR 中支持了 Native AOT<br> +<a target="_blank" rel="noopener" href="https://github.com/commandlineparser/commandline/pull/913">https://github.com/commandlineparser/commandline/pull/913</a></p> +<p>除此之外，还有一个更加精巧的 F# 库可以用，只有两百多行：<br> +<a target="_blank" rel="noopener" href="https://github.com/B2R2-org/FsOptParse/">https://github.com/B2R2-org/FsOptParse/</a></p> <p>AOT 后的大小很可观，并且支持 full trim.</p> <p>用例：</p> <figure class="highlight fsharp"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">(** defines a state to pass to the option parser *)</span></span><br><span class="line"><span class="keyword">type</span> <span class="title class_">opts</span> <span class="operator">=</span></span><br><span class="line"> {</span><br><span class="line"> optX <span class="operator">:</span> <span class="type">int</span>;</span><br><span class="line"> optY <span class="operator">:</span> <span class="type">bool</span>;</span><br><span class="line"> optZ <span class="operator">:</span> <span class="type">string</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"><span class="comment">(** default option state *)</span></span><br><span class="line"><span class="keyword">let</span> defaultOpts <span class="operator">=</span></span><br><span class="line"> {</span><br><span class="line"> optX <span class="operator">=</span> <span class="number">0</span>;</span><br><span class="line"> optY <span class="operator">=</span> <span class="literal">false</span>;</span><br><span class="line"> optZ <span class="operator">=</span> <span class="string">""</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"><span class="comment">(*</span></span><br><span class="line"><span class="comment"> An example command line specification, which is a list of Options.</span></span><br><span class="line"><span class="comment"> Each Option describes a command line option (switch) that is specified with</span></span><br><span class="line"><span class="comment"> either a short (a single-dash option) or long option (a double-dash option).</span></span><br><span class="line"><span class="comment">*)</span></span><br><span class="line"><span class="keyword">let</span> spec <span class="operator">=</span></span><br><span class="line"> [</span><br><span class="line"> <span class="comment">(* This option can be specified with -x <NUM>. There is an extra argument to</span></span><br><span class="line"><span class="comment"> specify a value in integer. *)</span></span><br><span class="line"> Option (<span class="comment">(* description of the option *)</span></span><br><span class="line"> descr<span class="operator">=</span><span class="string">"this is a testing param X"</span>,</span><br><span class="line"> <span class="comment">(* how many extra argument must be provided by a user? *)</span></span><br><span class="line"> extra<span class="operator">=</span><span class="number">1</span>,</span><br><span class="line"> <span class="comment">(* callback sets up the option and returns it *)</span></span><br><span class="line"> callback<span class="operator">=</span>(<span class="keyword">fun</span> opts arg <span class="operator">-></span> {opts <span class="keyword">with</span> optX<span class="operator">=</span>(int) arg.[<span class="number">0</span>]}),</span><br><span class="line"> <span class="comment">(* use a short option style -x *)</span></span><br><span class="line"> short<span class="operator">=</span><span class="string">"-x"</span></span><br><span class="line"> );</span><br><span class="line"></span><br><span class="line"> <span class="comment">(* This option can be specified with -y. There is no extra argument. This</span></span><br><span class="line"><span class="comment"> option just sets a flag, optY. *)</span></span><br><span class="line"> Option (<span class="comment">(* description of the option *)</span></span><br><span class="line"> descr<span class="operator">=</span><span class="string">"this is a testing param Y"</span>,</span><br><span class="line"> <span class="comment">(* set the option to be true *)</span></span><br><span class="line"> callback<span class="operator">=</span>(<span class="keyword">fun</span> opts _ <span class="operator">-></span> {opts <span class="keyword">with</span> optY<span class="operator">=</span><span class="literal">true</span>}),</span><br><span class="line"> <span class="comment">(* use a short option style (-y) *)</span></span><br><span class="line"> short<span class="operator">=</span><span class="string">"-y"</span>,</span><br><span class="line"> <span class="comment">(* also use a long option style (--yoohoo) *)</span></span><br><span class="line"> long<span class="operator">=</span><span class="string">"--yoohoo"</span></span><br><span class="line"> );</span><br><span class="line"></span><br><span class="line"> <span class="comment">(* A dummy option to pretty-print the usage *)</span></span><br><span class="line"> Option (<span class="comment">(* description of the option *)</span></span><br><span class="line"> descr<span class="operator">=</span><span class="string">""</span>,</span><br><span class="line"> dummy<span class="operator">=</span><span class="literal">true</span></span><br><span class="line"> );</span><br><span class="line"> Option (<span class="comment">(* description of the option *)</span></span><br><span class="line"> descr<span class="operator">=</span><span class="string">"[Required Options]"</span>,</span><br><span class="line"> descrColor<span class="operator">=</span>System.ConsoleColor.DarkCyan,</span><br><span class="line"> dummy<span class="operator">=</span><span class="literal">true</span></span><br><span class="line"> );</span><br><span class="line"></span><br><span class="line"> <span class="comment">(* The third option is a required option. In other words, option parsing</span></span><br><span class="line"><span class="comment"> will raise an exception if this option is not given by a user. This</span></span><br><span class="line"><span class="comment"> option takes in an additional integer argument, and set it to the global</span></span><br><span class="line"><span class="comment"> variable z. *)</span></span><br><span class="line"> Option (<span class="comment">(* description of the option *)</span></span><br><span class="line"> descr<span class="operator">=</span><span class="string">"required parameter <STRING> with an integer option"</span>,</span><br><span class="line"> <span class="comment">(* callback to set the optZ value *)</span></span><br><span class="line"> callback<span class="operator">=</span>(<span class="keyword">fun</span> opts arg <span class="operator">-></span> {opts <span class="keyword">with</span> optZ<span class="operator">=</span>arg.[<span class="number">0</span>]}),</span><br><span class="line"> <span class="comment">(* specifying this is a required option *)</span></span><br><span class="line"> required<span class="operator">=</span><span class="literal">true</span>,</span><br><span class="line"> <span class="comment">(* one additional argument to specify an integer value *)</span></span><br><span class="line"> extra<span class="operator">=</span><span class="number">1</span>,</span><br><span class="line"> <span class="comment">(* use only a long option style *)</span></span><br><span class="line"> long<span class="operator">=</span><span class="string">"--req"</span></span><br><span class="line"> );</span><br><span class="line"> ]</span><br><span class="line"></span><br><span class="line"><span class="keyword">let</span> _ <span class="operator">=</span></span><br><span class="line"> <span class="keyword">let</span> prog <span class="operator">=</span> <span class="string">"opttest.fsx"</span></span><br><span class="line"> <span class="keyword">let</span> args <span class="operator">=</span> System.Environment.GetCommandLineArgs ()</span><br><span class="line"> <span class="keyword">let</span> usageGetter () <span class="operator">=</span> <span class="string">"[Usage]\n %p %o"</span></span><br><span class="line"> <span class="keyword">try</span></span><br><span class="line"> <span class="keyword">let</span> left, opts <span class="operator">=</span> optParse spec usageGetter prog args defaultOpts</span><br><span class="line"> <span class="built_in">printfn</span> <span class="string">"Rest args: %A, x: %d, y: %b, z: %s"</span></span><br><span class="line"> left opts.optX opts.optY opts.optZ</span><br><span class="line"> <span class="number">0</span></span><br><span class="line"> <span class="keyword">with</span></span><br><span class="line"> <span class="operator">|</span> SpecErr msg <span class="operator">-></span></span><br><span class="line"> <span class="built_in">eprintfn</span> <span class="string">"Invalid spec: %s"</span> msg</span><br><span class="line"> exit <span class="number">1</span></span><br><span class="line"> <span class="operator">|</span> RuntimeErr msg <span class="operator">-></span></span><br><span class="line"> <span class="built_in">eprintfn</span> <span class="string">"Invalid args given by user: %s"</span> msg</span><br><span class="line"> usagePrint spec prog usageGetter (<span class="keyword">fun</span> () <span class="operator">-></span> exit <span class="number">1</span>)</span><br></pre></td></tr></table></figure> |