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305 lines
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<head>
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<title>Class: Erubis::Engine</title>
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</head>
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<body>
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<div id="classHeader">
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<table class="header-table">
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<tr class="top-aligned-row">
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<td><strong>Class</strong></td>
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<td class="class-name-in-header">Erubis::Engine</td>
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</tr>
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<tr class="top-aligned-row">
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<td><strong>In:</strong></td>
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<td>
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<a href="../../files/erubis/engine_rb.html">
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erubis/engine.rb
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</a>
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<br />
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</td>
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</tr>
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<tr class="top-aligned-row">
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<td><strong>Parent:</strong></td>
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<td>
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Object
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</td>
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</tr>
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</table>
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</div>
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<!-- banner header -->
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<div id="bodyContent">
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<div id="contextContent">
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<div id="description">
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<p>
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(abstract) abstract engine class. subclass must include evaluator and
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converter module.
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</p>
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</div>
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</div>
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<div id="method-list">
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<h3 class="section-bar">Methods</h3>
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<div class="name-list">
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<a href="#M000210">convert!</a>
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<a href="#M000211">load_file</a>
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<a href="#M000209">new</a>
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<a href="#M000212">process</a>
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<a href="#M000213">process_proc</a>
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</div>
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</div>
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<!-- if method_list -->
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<div id="methods">
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<h3 class="section-bar">Public Class methods</h3>
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<div id="method-M000211" class="method-detail">
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<a name="M000211"></a>
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<div class="method-heading">
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<a href="#M000211" class="method-signature">
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<span class="method-name">load_file</span><span class="method-args">(filename, properties={})</span>
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</a>
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</div>
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<div class="method-description">
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<p>
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load file, write cache file, and return engine object. this method create
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code cache file automatically. cachefile name can be specified with
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properties[:cachename], or filname + ‘cache’ is used as
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default.
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</p>
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000211-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000211-source">
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<pre>
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<span class="ruby-comment cmt"># File erubis/engine.rb, line 48</span>
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<span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">load_file</span>(<span class="ruby-identifier">filename</span>, <span class="ruby-identifier">properties</span>={})
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<span class="ruby-identifier">cachename</span> = <span class="ruby-identifier">properties</span>[<span class="ruby-identifier">:cachename</span>] <span class="ruby-operator">||</span> (<span class="ruby-identifier">filename</span> <span class="ruby-operator">+</span> <span class="ruby-value str">'.cache'</span>)
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<span class="ruby-identifier">properties</span>[<span class="ruby-identifier">:filename</span>] = <span class="ruby-identifier">filename</span>
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<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">test</span>(<span class="ruby-value">?f</span>, <span class="ruby-identifier">cachename</span>) <span class="ruby-operator">&&</span> <span class="ruby-constant">File</span>.<span class="ruby-identifier">mtime</span>(<span class="ruby-identifier">filename</span>) <span class="ruby-operator"><=</span> <span class="ruby-constant">File</span>.<span class="ruby-identifier">mtime</span>(<span class="ruby-identifier">cachename</span>)
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<span class="ruby-identifier">engine</span> = <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">new</span>(<span class="ruby-keyword kw">nil</span>, <span class="ruby-identifier">properties</span>)
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<span class="ruby-identifier">engine</span>.<span class="ruby-identifier">src</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">read</span>(<span class="ruby-identifier">cachename</span>)
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<span class="ruby-keyword kw">else</span>
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<span class="ruby-identifier">input</span> = <span class="ruby-constant">File</span>.<span class="ruby-identifier">open</span>(<span class="ruby-identifier">filename</span>, <span class="ruby-value str">'rb'</span>) {<span class="ruby-operator">|</span><span class="ruby-identifier">f</span><span class="ruby-operator">|</span> <span class="ruby-identifier">f</span>.<span class="ruby-identifier">read</span> }
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<span class="ruby-identifier">engine</span> = <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">input</span>, <span class="ruby-identifier">properties</span>)
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<span class="ruby-constant">File</span>.<span class="ruby-identifier">open</span>(<span class="ruby-identifier">cachename</span>, <span class="ruby-value str">'wb'</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">f</span><span class="ruby-operator">|</span>
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<span class="ruby-identifier">f</span>.<span class="ruby-identifier">flock</span>(<span class="ruby-constant">File</span><span class="ruby-operator">::</span><span class="ruby-constant">LOCK_EX</span>)
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<span class="ruby-identifier">f</span>.<span class="ruby-identifier">write</span>(<span class="ruby-identifier">engine</span>.<span class="ruby-identifier">src</span>)
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<span class="ruby-identifier">f</span>.<span class="ruby-identifier">flush</span>()
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<span class="ruby-keyword kw">end</span>
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<span class="ruby-keyword kw">end</span>
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<span class="ruby-identifier">engine</span>.<span class="ruby-identifier">src</span>.<span class="ruby-identifier">untaint</span> <span class="ruby-comment cmt"># ok?</span>
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<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">engine</span>
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<span class="ruby-keyword kw">end</span>
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</pre>
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</div>
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</div>
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</div>
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<div id="method-M000209" class="method-detail">
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<a name="M000209"></a>
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<div class="method-heading">
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<a href="#M000209" class="method-signature">
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<span class="method-name">new</span><span class="method-args">(input=nil, properties={})</span>
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</a>
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</div>
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<div class="method-description">
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<p>
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include <a href="Evaluator.html">Evaluator</a> include <a
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href="Converter.html">Converter</a> include <a
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href="Generator.html">Generator</a>
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</p>
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000209-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000209-source">
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<pre>
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<span class="ruby-comment cmt"># File erubis/engine.rb, line 25</span>
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<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">input</span>=<span class="ruby-keyword kw">nil</span>, <span class="ruby-identifier">properties</span>={})
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<span class="ruby-comment cmt">#@input = input</span>
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<span class="ruby-identifier">init_generator</span>(<span class="ruby-identifier">properties</span>)
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<span class="ruby-identifier">init_converter</span>(<span class="ruby-identifier">properties</span>)
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<span class="ruby-identifier">init_evaluator</span>(<span class="ruby-identifier">properties</span>)
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<span class="ruby-ivar">@src</span> = <span class="ruby-identifier">convert</span>(<span class="ruby-identifier">input</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">input</span>
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<span class="ruby-keyword kw">end</span>
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</pre>
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</div>
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</div>
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</div>
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<h3 class="section-bar">Public Instance methods</h3>
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<div id="method-M000210" class="method-detail">
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<a name="M000210"></a>
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<div class="method-heading">
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<a href="#M000210" class="method-signature">
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<span class="method-name">convert!</span><span class="method-args">(input)</span>
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</a>
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</div>
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<div class="method-description">
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<p>
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convert input string and set it to @src
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</p>
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000210-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000210-source">
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<pre>
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<span class="ruby-comment cmt"># File erubis/engine.rb, line 37</span>
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<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">convert!</span>(<span class="ruby-identifier">input</span>)
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<span class="ruby-ivar">@src</span> = <span class="ruby-identifier">convert</span>(<span class="ruby-identifier">input</span>)
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<span class="ruby-keyword kw">end</span>
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</pre>
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</div>
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</div>
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</div>
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<div id="method-M000212" class="method-detail">
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<a name="M000212"></a>
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<div class="method-heading">
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<a href="#M000212" class="method-signature">
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<span class="method-name">process</span><span class="method-args">(input, context=nil, filename=nil)</span>
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</a>
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</div>
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<div class="method-description">
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<p>
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helper method to convert and evaluate input text with context object.
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context may be Binding, Hash, or Object.
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</p>
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000212-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000212-source">
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<pre>
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<span class="ruby-comment cmt"># File erubis/engine.rb, line 72</span>
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<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">process</span>(<span class="ruby-identifier">input</span>, <span class="ruby-identifier">context</span>=<span class="ruby-keyword kw">nil</span>, <span class="ruby-identifier">filename</span>=<span class="ruby-keyword kw">nil</span>)
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<span class="ruby-identifier">code</span> = <span class="ruby-identifier">convert</span>(<span class="ruby-identifier">input</span>)
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<span class="ruby-identifier">filename</span> <span class="ruby-operator">||=</span> <span class="ruby-value str">'(erubis)'</span>
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<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">context</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">Binding</span>)
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<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">eval</span>(<span class="ruby-identifier">code</span>, <span class="ruby-identifier">context</span>, <span class="ruby-identifier">filename</span>)
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<span class="ruby-keyword kw">else</span>
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<span class="ruby-identifier">context</span> = <span class="ruby-constant">Context</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">context</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">context</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">Hash</span>)
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<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">context</span>.<span class="ruby-identifier">instance_eval</span>(<span class="ruby-identifier">code</span>, <span class="ruby-identifier">filename</span>)
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<span class="ruby-keyword kw">end</span>
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<span class="ruby-keyword kw">end</span>
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</pre>
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</div>
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</div>
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</div>
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<div id="method-M000213" class="method-detail">
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<a name="M000213"></a>
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<div class="method-heading">
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<a href="#M000213" class="method-signature">
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<span class="method-name">process_proc</span><span class="method-args">(proc_obj, context=nil, filename=nil)</span>
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</a>
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</div>
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<div class="method-description">
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<p>
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helper method evaluate Proc object with contect object. context may be
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Binding, Hash, or Object.
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</p>
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000213-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000213-source">
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<pre>
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<span class="ruby-comment cmt"># File erubis/engine.rb, line 88</span>
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<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">process_proc</span>(<span class="ruby-identifier">proc_obj</span>, <span class="ruby-identifier">context</span>=<span class="ruby-keyword kw">nil</span>, <span class="ruby-identifier">filename</span>=<span class="ruby-keyword kw">nil</span>)
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<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">context</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">Binding</span>)
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<span class="ruby-identifier">filename</span> <span class="ruby-operator">||=</span> <span class="ruby-value str">'(erubis)'</span>
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<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">eval</span>(<span class="ruby-identifier">proc_obj</span>, <span class="ruby-identifier">context</span>, <span class="ruby-identifier">filename</span>)
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<span class="ruby-keyword kw">else</span>
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<span class="ruby-identifier">context</span> = <span class="ruby-constant">Context</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">context</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">context</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-constant">Hash</span>)
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<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">context</span>.<span class="ruby-identifier">instance_eval</span>(<span class="ruby-operator">&</span><span class="ruby-identifier">proc_obj</span>)
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<span class="ruby-keyword kw">end</span>
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<span class="ruby-keyword kw">end</span>
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</pre>
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</div>
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