1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<meta name="author" content="韩暮秋">
<meta name="subtitle" content="暮秋小屋">
<meta name="description" content="这里是暮秋小屋,思念和灵感的寄存处">
<meta name="keywords" content="韩暮秋,MuqiuHan,'Muqiu Han', 'muqiu han', muqiuhan">
<title>
.NET AOT 下的 F# 命令行参数解析库选择 |
暮秋小屋
</title>
<link rel="icon" href="/favicon.ico">
<style>
@font-face {
font-family: CarroisSong;
src: url('/fonts/CarroisSong.ttf');
}
</style>
<!-- stylesheets list from _config.yml -->
<link rel="stylesheet" href="/css/style.css">
<!-- scripts list from _config.yml -->
<script
src="/js/menu.js"></script>
<script
src="https://polyfill.alicdn.com/polyfill.js?features=es6"></script>
<script
id="MathJax-script"
async
src="https://lf6-cdn-tos.bytecdntp.com/cdn/expire-1-M/mathjax/3.2.0/es5/tex-mml-chtml.js"></script>
<meta name="generator" content="Hexo 6.3.0"></head>
<body>
<div class="mask-border">
</div>
<div class="wrapper">
<div class="header">
<div class="flex-container">
<div class="header-inner">
<div class="site-brand-container">
<a href="/">
暮秋小屋
</a>
</div>
<div id="menu-btn" class="menu-btn" onclick="toggleMenu()">
菜单
</div>
<nav class="site-nav">
<ul class="menu-list">
<li class="menu-item">
<a href="/">
主页
</a>
</li>
<li class="menu-item">
<a href="/categories/gallery/">
日记本
</a>
</li>
<li class="menu-item">
<a href="/tags/Medicine/">
临床/泛医学
</a>
</li>
<li class="menu-item">
<a href="/tags/Technique/">
计算机/互联网
</a>
</li>
<li class="menu-item">
<a href="/tags/Life/">
生活
</a>
</li>
<li class="menu-item">
<a href="/archives">
全部
</a>
</li>
<li class="menu-item">
<a href="/about">
关于
</a>
</li>
<li class="menu-item search-btn">
<a href="#">Search</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="main">
<div class="flex-container">
<article id="post">
<div class="post-head">
<div class="post-info">
<div class="tag-list">
<span class="post-tag">
<a href="/tags/Technique/">
Technique
</a>
</span>
</div>
<div class="post-title">
.NET AOT 下的 F# 命令行参数解析库选择
</div>
<span class="post-date">
Jun 6, 2024
</span>
</div>
<div class="post-img">
<div class="h-line-primary"></div>
</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>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>
</div>
<script>
window.onload = detectors();
</script>
<div class="post-footer">
<div class="h-line-primary"></div>
<nav class="post-nav">
<div class="prev-item">
<div class="icon arrow-left"></div>
<div class="post-link">
<a href="/2024/06/27/OCaml-News-2024-5/">Prev</a>
</div>
</div>
<div class="next-item">
<div class="icon arrow-right"></div>
<div class="post-link">
<a href="/2024/05/20/Rescript-genType-import-%E9%97%AE%E9%A2%98/">Next</a>
</div>
</div>
</nav>
</div>
<div class="post-comment">
</div>
</article>
</div>
</div>
<div class="footer">
<div class="flex-container">
<div class="footer-text">
韩暮秋 |
希望路过的人可以添点柴火让这里暖和点
</div>
</div>
</div>
</div>
<div class="search-popup">
<div class="search-popup-overlay">
</div>
<div class="search-popup-window" >
<div class="search-header">
<div class="search-input-container">
<input autocomplete="off" autocapitalize="off" maxlength="80"
placeholder="Search Anything" spellcheck="false"
type="search" class="search-input">
</div>
<div class="search-close-btn">
<div class="icon close-btn"></div>
</div>
</div>
<div class="search-result-container">
</div>
</div>
</div>
<script>
const searchConfig = {
path : "/search.xml",
top_n_per_article: "1",
unescape : "false",
trigger: "auto",
preload: "false"
}
</script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/search.js"></script>
<script src="/js/search.js"></script>
</body>
</html>
|