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CoffeeScript 1.6.2
This commit is contained in:
Jeremy Ashkenas
parent
4f815ea978
commit
a3e8de338a
91 changed files with 8587 additions and 7766 deletions
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@ -92,19 +92,22 @@
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</li>
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</ul>
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<ul class="sections">
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<li id="title">
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<div class="annotation">
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<h1>optparse.coffee</h1>
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</div>
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</li>
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<ul class="sections">
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<li id="title">
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<div class="annotation">
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<h1>optparse.coffee</h1>
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</div>
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</li>
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<li id="section-1">
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<div class="annotation">
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<div class="pilwrap">
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-1">¶</a>
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</div>
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</div>
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<p>A simple <strong>OptionParser</strong> class to parse option flags from the command-line.
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Use it like so:
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@ -113,229 +116,231 @@ Use it like so:
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options = parser.parse process.argv</code></pre>
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<p>The first non-option is considered to be the start of the file (and file
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option) list, and all subsequent arguments are left unparsed.
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</p>
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</div>
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<div class="content"><div class="highlight"><pre><span class="nv">exports.OptionParser = </span><span class="k">class</span> <span class="nx">OptionParser</span></pre></div></div>
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<div class="content"><div class='highlight'><pre>exports.OptionParser = <span class="class"><span class="keyword">class</span> <span class="title">OptionParser</span></span></pre></div></div>
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</li>
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<li id="section-2">
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<div class="annotation">
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<div class="pilwrap">
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<a class="pilcrow" href="#section-2">¶</a>
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</div>
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<p>Initialize with a list of valid options, in the form:
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-2">¶</a>
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</div>
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<p>Initialize with a list of valid options, in the form:
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</p>
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<pre><code>[short-flag, long-flag, description]</code></pre>
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<p>Along with an an optional banner for the usage help.
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</p>
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</div>
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<div class="content"><div class="highlight"><pre> <span class="nv">constructor: </span><span class="nf">(rules, @banner) -></span>
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<span class="vi">@rules = </span><span class="nx">buildRules</span> <span class="nx">rules</span></pre></div></div>
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<div class="content"><div class='highlight'><pre> constructor: (rules, <span class="property">@banner</span>) ->
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<span class="property">@rules</span> = buildRules rules</pre></div></div>
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</li>
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<li id="section-3">
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<div class="annotation">
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<div class="pilwrap">
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<a class="pilcrow" href="#section-3">¶</a>
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</div>
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<p>Parse the list of arguments, populating an <code>options</code> object with all of the
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-3">¶</a>
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</div>
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<p>Parse the list of arguments, populating an <code>options</code> object with all of the
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specified options, and return it. Options after the first non-option
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argument are treated as arguments. <code>options.arguments</code> will be an array
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containing the remaining arguments. This is a simpler API than many option
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parsers that allow you to attach callback actions for every flag. Instead,
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you're responsible for interpreting the options object.
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</p>
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</div>
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<div class="content"><div class="highlight"><pre> <span class="nv">parse: </span><span class="nf">(args) -></span>
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<span class="nv">options = arguments: </span><span class="p">[]</span>
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<span class="nv">skippingArgument = </span><span class="kc">no</span>
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<span class="nv">originalArgs = </span><span class="nx">args</span>
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<span class="nv">args = </span><span class="nx">normalizeArguments</span> <span class="nx">args</span>
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<span class="k">for</span> <span class="nx">arg</span><span class="p">,</span> <span class="nx">i</span> <span class="k">in</span> <span class="nx">args</span>
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<span class="k">if</span> <span class="nx">skippingArgument</span>
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<span class="nv">skippingArgument = </span><span class="kc">no</span>
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<span class="k">continue</span>
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<span class="k">if</span> <span class="nx">arg</span> <span class="o">is</span> <span class="s">'--'</span>
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<span class="nv">pos = </span><span class="nx">originalArgs</span><span class="p">.</span><span class="nx">indexOf</span> <span class="s">'--'</span>
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<span class="nv">options.arguments = </span><span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">concat</span> <span class="nx">originalArgs</span><span class="p">[(</span><span class="nx">pos</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)..]</span>
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<span class="k">break</span>
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<span class="nv">isOption = </span><span class="o">!!</span><span class="p">(</span><span class="nx">arg</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LONG_FLAG</span><span class="p">)</span> <span class="o">or</span> <span class="nx">arg</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">SHORT_FLAG</span><span class="p">))</span></pre></div></div>
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<div class="content"><div class='highlight'><pre> parse: (args) ->
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options = arguments: []
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skippingArgument = <span class="literal">no</span>
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originalArgs = args
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args = normalizeArguments args
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<span class="keyword">for</span> arg, i <span class="keyword">in</span> args
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<span class="keyword">if</span> skippingArgument
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skippingArgument = <span class="literal">no</span>
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<span class="keyword">continue</span>
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<span class="keyword">if</span> arg <span class="keyword">is</span> <span class="string">'--'</span>
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pos = originalArgs.indexOf <span class="string">'--'</span>
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options.arguments = options.arguments.concat originalArgs[(pos + <span class="number">1</span>)..]
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<span class="keyword">break</span>
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isOption = !!(arg.match(LONG_FLAG) <span class="keyword">or</span> arg.match(SHORT_FLAG))</pre></div></div>
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</li>
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<li id="section-4">
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<div class="annotation">
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<div class="pilwrap">
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<a class="pilcrow" href="#section-4">¶</a>
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</div>
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<p>the CS option parser is a little odd; options after the first
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-4">¶</a>
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</div>
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<p>the CS option parser is a little odd; options after the first
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non-option argument are treated as non-option arguments themselves
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</p>
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</div>
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<div class="content"><div class="highlight"><pre> <span class="nv">seenNonOptionArg = </span><span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">length</span> <span class="o">></span> <span class="mi">0</span>
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<span class="k">unless</span> <span class="nx">seenNonOptionArg</span>
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<span class="nv">matchedRule = </span><span class="kc">no</span>
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<span class="k">for</span> <span class="nx">rule</span> <span class="k">in</span> <span class="nx">@rules</span>
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<span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">shortFlag</span> <span class="o">is</span> <span class="nx">arg</span> <span class="o">or</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">longFlag</span> <span class="o">is</span> <span class="nx">arg</span>
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<span class="nv">value = </span><span class="kc">true</span>
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<span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">hasArgument</span>
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<span class="nv">skippingArgument = </span><span class="kc">yes</span>
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<span class="nv">value = </span><span class="nx">args</span><span class="p">[</span><span class="nx">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">]</span>
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<span class="nx">options</span><span class="p">[</span><span class="nx">rule</span><span class="p">.</span><span class="nx">name</span><span class="p">]</span> <span class="o">=</span> <span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">isList</span> <span class="k">then</span> <span class="p">(</span><span class="nx">options</span><span class="p">[</span><span class="nx">rule</span><span class="p">.</span><span class="nx">name</span><span class="p">]</span> <span class="o">or</span> <span class="p">[]).</span><span class="nx">concat</span> <span class="nx">value</span> <span class="k">else</span> <span class="nx">value</span>
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<span class="nv">matchedRule = </span><span class="kc">yes</span>
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<span class="k">break</span>
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<span class="k">throw</span> <span class="k">new</span> <span class="nb">Error</span> <span class="s">"unrecognized option: </span><span class="si">#{</span><span class="nx">arg</span><span class="si">}</span><span class="s">"</span> <span class="k">if</span> <span class="nx">isOption</span> <span class="o">and</span> <span class="o">not</span> <span class="nx">matchedRule</span>
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<span class="k">if</span> <span class="nx">seenNonOptionArg</span> <span class="o">or</span> <span class="o">not</span> <span class="nx">isOption</span>
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<span class="nx">options</span><span class="p">.</span><span class="nx">arguments</span><span class="p">.</span><span class="nx">push</span> <span class="nx">arg</span>
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<span class="nx">options</span></pre></div></div>
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<div class="content"><div class='highlight'><pre> seenNonOptionArg = options.arguments.length > <span class="number">0</span>
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<span class="keyword">unless</span> seenNonOptionArg
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matchedRule = <span class="literal">no</span>
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<span class="keyword">for</span> rule <span class="keyword">in</span> <span class="property">@rules</span>
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<span class="keyword">if</span> rule.shortFlag <span class="keyword">is</span> arg <span class="keyword">or</span> rule.longFlag <span class="keyword">is</span> arg
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value = <span class="literal">true</span>
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<span class="keyword">if</span> rule.hasArgument
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skippingArgument = <span class="literal">yes</span>
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value = args[i + <span class="number">1</span>]
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options[rule.name] = <span class="keyword">if</span> rule.isList <span class="keyword">then</span> (options[rule.name] <span class="keyword">or</span> []).concat value <span class="keyword">else</span> value
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matchedRule = <span class="literal">yes</span>
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<span class="keyword">break</span>
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<span class="keyword">throw</span> <span class="keyword">new</span> Error <span class="string">"unrecognized option: <span class="subst">#{arg}</span>"</span> <span class="keyword">if</span> isOption <span class="keyword">and</span> <span class="keyword">not</span> matchedRule
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<span class="keyword">if</span> seenNonOptionArg <span class="keyword">or</span> <span class="keyword">not</span> isOption
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options.arguments.push arg
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options</pre></div></div>
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</li>
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<li id="section-5">
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<div class="annotation">
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||||
<div class="pilwrap">
|
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<a class="pilcrow" href="#section-5">¶</a>
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</div>
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<p>Return the help text for this <strong>OptionParser</strong>, listing and describing all
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<div class="pilwrap ">
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<a class="pilcrow" href="#section-5">¶</a>
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</div>
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<p>Return the help text for this <strong>OptionParser</strong>, listing and describing all
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of the valid options, for <code>--help</code> and such.
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</p>
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</div>
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<div class="content"><div class="highlight"><pre> <span class="nv">help: </span><span class="nf">-></span>
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<span class="nv">lines = </span><span class="p">[]</span>
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<span class="nx">lines</span><span class="p">.</span><span class="nx">unshift</span> <span class="s">"</span><span class="si">#{</span><span class="nx">@banner</span><span class="si">}</span><span class="s">\n"</span> <span class="k">if</span> <span class="nx">@banner</span>
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<span class="k">for</span> <span class="nx">rule</span> <span class="k">in</span> <span class="nx">@rules</span>
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<span class="nv">spaces = </span><span class="mi">15</span> <span class="o">-</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">longFlag</span><span class="p">.</span><span class="nx">length</span>
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<span class="nv">spaces = </span><span class="k">if</span> <span class="nx">spaces</span> <span class="o">></span> <span class="mi">0</span> <span class="k">then</span> <span class="nb">Array</span><span class="p">(</span><span class="nx">spaces</span> <span class="o">+</span> <span class="mi">1</span><span class="p">).</span><span class="nx">join</span><span class="p">(</span><span class="s">' '</span><span class="p">)</span> <span class="k">else</span> <span class="s">''</span>
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<span class="nv">letPart = </span><span class="k">if</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">shortFlag</span> <span class="k">then</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">shortFlag</span> <span class="o">+</span> <span class="s">', '</span> <span class="k">else</span> <span class="s">' '</span>
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<span class="nx">lines</span><span class="p">.</span><span class="nx">push</span> <span class="s">' '</span> <span class="o">+</span> <span class="nx">letPart</span> <span class="o">+</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">longFlag</span> <span class="o">+</span> <span class="nx">spaces</span> <span class="o">+</span> <span class="nx">rule</span><span class="p">.</span><span class="nx">description</span>
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<span class="s">"\n</span><span class="si">#{</span> <span class="nx">lines</span><span class="p">.</span><span class="nx">join</span><span class="p">(</span><span class="s">'\n'</span><span class="p">)</span> <span class="si">}</span><span class="s">\n"</span></pre></div></div>
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<div class="content"><div class='highlight'><pre> help: ->
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lines = []
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lines.unshift <span class="string">"<span class="subst">#{@banner}</span>\n"</span> <span class="keyword">if</span> <span class="property">@banner</span>
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<span class="keyword">for</span> rule <span class="keyword">in</span> <span class="property">@rules</span>
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spaces = <span class="number">15</span> - rule.longFlag.length
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spaces = <span class="keyword">if</span> spaces > <span class="number">0</span> <span class="keyword">then</span> Array(spaces + <span class="number">1</span>).join(<span class="string">' '</span>) <span class="keyword">else</span> <span class="string">''</span>
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letPart = <span class="keyword">if</span> rule.shortFlag <span class="keyword">then</span> rule.shortFlag + <span class="string">', '</span> <span class="keyword">else</span> <span class="string">' '</span>
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lines.push <span class="string">' '</span> + letPart + rule.longFlag + spaces + rule.description
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<span class="string">"\n<span class="subst">#{ lines.join('\n') }</span>\n"</span></pre></div></div>
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||||
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</li>
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||||
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||||
<li id="section-6">
|
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<div class="annotation">
|
||||
<div class="pilwrap">
|
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<a class="pilcrow" href="#section-6">¶</a>
|
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</div>
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<h2>Helpers</h2>
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<p>Regex matchers for option flags.
|
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</p>
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<div class="pilwrap for-h2">
|
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<a class="pilcrow" href="#section-6">¶</a>
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</div>
|
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<h2>Helpers</h2>
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||||
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</div>
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<div class="content"><div class="highlight"><pre><span class="nv">LONG_FLAG = </span><span class="sr">/^(--\w[\w\-]*)/</span>
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<span class="nv">SHORT_FLAG = </span><span class="sr">/^(-\w)$/</span>
|
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<span class="nv">MULTI_FLAG = </span><span class="sr">/^-(\w{2,})/</span>
|
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<span class="nv">OPTIONAL = </span><span class="sr">/\[(\w+(\*?))\]/</span></pre></div></div>
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</li>
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|
||||
|
||||
|
||||
<li id="section-7">
|
||||
<div class="annotation">
|
||||
<div class="pilwrap">
|
||||
<a class="pilcrow" href="#section-7">¶</a>
|
||||
</div>
|
||||
|
||||
<p>Build and return the list of option rules. If the optional <em>short-flag</em> is
|
||||
unspecified, leave it out by padding with <code>null</code>.
|
||||
|
||||
<div class="pilwrap ">
|
||||
<a class="pilcrow" href="#section-7">¶</a>
|
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</div>
|
||||
<p>Regex matchers for option flags.
|
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</p>
|
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|
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</div>
|
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|
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<div class="content"><div class="highlight"><pre><span class="nv">buildRules = </span><span class="nf">(rules) -></span>
|
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<span class="k">for</span> <span class="nx">tuple</span> <span class="k">in</span> <span class="nx">rules</span>
|
||||
<span class="nx">tuple</span><span class="p">.</span><span class="nx">unshift</span> <span class="kc">null</span> <span class="k">if</span> <span class="nx">tuple</span><span class="p">.</span><span class="nx">length</span> <span class="o"><</span> <span class="mi">3</span>
|
||||
<span class="nx">buildRule</span> <span class="nx">tuple</span><span class="p">...</span></pre></div></div>
|
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<div class="content"><div class='highlight'><pre>LONG_FLAG = <span class="regexp">/^(--\w[\w\-]*)/</span>
|
||||
SHORT_FLAG = <span class="regexp">/^(-\w)$/</span>
|
||||
MULTI_FLAG = <span class="regexp">/^-(\w{2,})/</span>
|
||||
OPTIONAL = <span class="regexp">/\[(\w+(\*?))\]/</span></pre></div></div>
|
||||
|
||||
</li>
|
||||
|
||||
|
||||
|
||||
<li id="section-8">
|
||||
<div class="annotation">
|
||||
<div class="pilwrap">
|
||||
<a class="pilcrow" href="#section-8">¶</a>
|
||||
</div>
|
||||
|
||||
<p>Build a rule from a <code>-o</code> short flag, a <code>--output [DIR]</code> long flag, and the
|
||||
description of what the option does.
|
||||
|
||||
<div class="pilwrap ">
|
||||
<a class="pilcrow" href="#section-8">¶</a>
|
||||
</div>
|
||||
<p>Build and return the list of option rules. If the optional <em>short-flag</em> is
|
||||
unspecified, leave it out by padding with <code>null</code>.
|
||||
</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="content"><div class="highlight"><pre><span class="nv">buildRule = </span><span class="nf">(shortFlag, longFlag, description, options = {}) -></span>
|
||||
<span class="nv">match = </span><span class="nx">longFlag</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">OPTIONAL</span><span class="p">)</span>
|
||||
<span class="nv">longFlag = </span><span class="nx">longFlag</span><span class="p">.</span><span class="nx">match</span><span class="p">(</span><span class="nx">LONG_FLAG</span><span class="p">)[</span><span class="mi">1</span><span class="p">]</span>
|
||||
<span class="p">{</span>
|
||||
<span class="nv">name: </span> <span class="nx">longFlag</span><span class="p">.</span><span class="nx">substr</span> <span class="mi">2</span>
|
||||
<span class="nv">shortFlag: </span> <span class="nx">shortFlag</span>
|
||||
<span class="nv">longFlag: </span> <span class="nx">longFlag</span>
|
||||
<span class="nv">description: </span> <span class="nx">description</span>
|
||||
<span class="nv">hasArgument: </span> <span class="o">!!</span><span class="p">(</span><span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
|
||||
<span class="nv">isList: </span> <span class="o">!!</span><span class="p">(</span><span class="nx">match</span> <span class="o">and</span> <span class="nx">match</span><span class="p">[</span><span class="mi">2</span><span class="p">])</span>
|
||||
<span class="p">}</span></pre></div></div>
|
||||
<div class="content"><div class='highlight'><pre><span class="function"><span class="title">buildRules</span></span> = (rules) ->
|
||||
<span class="keyword">for</span> tuple <span class="keyword">in</span> rules
|
||||
tuple.unshift <span class="literal">null</span> <span class="keyword">if</span> tuple.length < <span class="number">3</span>
|
||||
buildRule tuple...</pre></div></div>
|
||||
|
||||
</li>
|
||||
|
||||
|
||||
|
||||
<li id="section-9">
|
||||
<div class="annotation">
|
||||
<div class="pilwrap">
|
||||
<a class="pilcrow" href="#section-9">¶</a>
|
||||
</div>
|
||||
|
||||
<p>Normalize arguments by expanding merged flags into multiple flags. This allows
|
||||
<div class="pilwrap ">
|
||||
<a class="pilcrow" href="#section-9">¶</a>
|
||||
</div>
|
||||
<p>Build a rule from a <code>-o</code> short flag, a <code>--output [DIR]</code> long flag, and the
|
||||
description of what the option does.
|
||||
</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="content"><div class='highlight'><pre><span class="function"><span class="title">buildRule</span></span> = (shortFlag, longFlag, description, options = {}) ->
|
||||
match = longFlag.match(OPTIONAL)
|
||||
longFlag = longFlag.match(LONG_FLAG)[<span class="number">1</span>]
|
||||
{
|
||||
name: longFlag.substr <span class="number">2</span>
|
||||
shortFlag: shortFlag
|
||||
longFlag: longFlag
|
||||
description: description
|
||||
hasArgument: !!(match <span class="keyword">and</span> match[<span class="number">1</span>])
|
||||
isList: !!(match <span class="keyword">and</span> match[<span class="number">2</span>])
|
||||
}</pre></div></div>
|
||||
|
||||
</li>
|
||||
|
||||
|
||||
<li id="section-10">
|
||||
<div class="annotation">
|
||||
|
||||
<div class="pilwrap ">
|
||||
<a class="pilcrow" href="#section-10">¶</a>
|
||||
</div>
|
||||
<p>Normalize arguments by expanding merged flags into multiple flags. This allows
|
||||
you to have <code>-wl</code> be the same as <code>--watch --lint</code>.
|
||||
</p>
|
||||
|
||||
</div>
|
||||
|
||||
<div class="content"><div class="highlight"><pre><span class="nv">normalizeArguments = </span><span class="nf">(args) -></span>
|
||||
<span class="nv">args = </span><span class="nx">args</span><span class="p">[..]</span>
|
||||
<span class="nv">result = </span><span class="p">[]</span>
|
||||
<span class="k">for</span> <span class="nx">arg</span> <span class="k">in</span> <span class="nx">args</span>
|
||||
<span class="k">if</span> <span class="nv">match = </span><span class="nx">arg</span><span class="p">.</span><span class="nx">match</span> <span class="nx">MULTI_FLAG</span>
|
||||
<span class="nx">result</span><span class="p">.</span><span class="nx">push</span> <span class="s">'-'</span> <span class="o">+</span> <span class="nx">l</span> <span class="k">for</span> <span class="nx">l</span> <span class="k">in</span> <span class="nx">match</span><span class="p">[</span><span class="mi">1</span><span class="p">].</span><span class="nx">split</span> <span class="s">''</span>
|
||||
<span class="k">else</span>
|
||||
<span class="nx">result</span><span class="p">.</span><span class="nx">push</span> <span class="nx">arg</span>
|
||||
<span class="nx">result</span>
|
||||
|
||||
</pre></div></div>
|
||||
<div class="content"><div class='highlight'><pre><span class="function"><span class="title">normalizeArguments</span></span> = (args) ->
|
||||
args = args[..]
|
||||
result = []
|
||||
<span class="keyword">for</span> arg <span class="keyword">in</span> args
|
||||
<span class="keyword">if</span> match = arg.match MULTI_FLAG
|
||||
result.push <span class="string">'-'</span> + l <span class="keyword">for</span> l <span class="keyword">in</span> match[<span class="number">1</span>].split <span class="string">''</span>
|
||||
<span class="keyword">else</span>
|
||||
result.push arg
|
||||
result</pre></div></div>
|
||||
|
||||
</li>
|
||||
|
||||
</ul>
|
||||
</ul>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
|
|
|
|||
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