378 lines
16 KiB
HTML
378 lines
16 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
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<head>
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<title>Class: Rack::File</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta http-equiv="Content-Script-Type" content="text/javascript" />
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<link rel="stylesheet" href="../.././rdoc-style.css" type="text/css" media="screen" />
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<script type="text/javascript">
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// <![CDATA[
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function popupCode( url ) {
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window.open(url, "Code", "resizable=yes,scrollbars=yes,toolbar=no,status=no,height=150,width=400")
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}
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function toggleCode( id ) {
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if ( document.getElementById )
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elem = document.getElementById( id );
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else if ( document.all )
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elem = eval( "document.all." + id );
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else
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return false;
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elemStyle = elem.style;
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if ( elemStyle.display != "block" ) {
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elemStyle.display = "block"
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} else {
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elemStyle.display = "none"
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}
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return true;
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}
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// Make codeblocks hidden by default
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document.writeln( "<style type=\"text/css\">div.method-source-code { display: none }</style>" )
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// ]]>
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</script>
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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">Rack::File</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/lib/rack/file_rb.html">
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lib/rack/file.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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<a href="File.html">Rack::File</a> serves files below the <tt>root</tt>
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given, according to the path info of the <a href="../Rack.html">Rack</a>
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request.
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</p>
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<p>
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Handlers can detect if bodies are a <a href="File.html">Rack::File</a>, and
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use mechanisms like sendfile on the <tt>path</tt>.
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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="#M000206">_call</a>
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<a href="#M000205">call</a>
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<a href="#M000210">each</a>
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<a href="#M000207">forbidden</a>
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<a href="#M000204">new</a>
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<a href="#M000209">not_found</a>
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<a href="#M000208">serving</a>
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</div>
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</div>
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</div>
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<!-- if includes -->
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<div id="section">
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<div id="constants-list">
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<h3 class="section-bar">Constants</h3>
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<div class="name-list">
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<table summary="Constants">
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<tr class="top-aligned-row context-row">
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<td class="context-item-name">F</td>
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<td>=</td>
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<td class="context-item-value">::File</td>
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</tr>
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</table>
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</div>
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</div>
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<div id="attribute-list">
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<h3 class="section-bar">Attributes</h3>
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<div class="name-list">
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<table>
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<tr class="top-aligned-row context-row">
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<td class="context-item-name">path</td>
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<td class="context-item-value"> [RW] </td>
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<td class="context-item-desc"></td>
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</tr>
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<tr class="top-aligned-row context-row">
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<td class="context-item-name">root</td>
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<td class="context-item-value"> [RW] </td>
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<td class="context-item-desc"></td>
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</tr>
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</table>
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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-M000204" class="method-detail">
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<a name="M000204"></a>
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<div class="method-heading">
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<a href="#M000204" class="method-signature">
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<span class="method-name">new</span><span class="method-args">(root)</span>
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</a>
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</div>
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<div class="method-description">
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000204-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000204-source">
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<pre>
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<span class="ruby-comment cmt"># File lib/rack/file.rb, line 15</span>
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15: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">initialize</span>(<span class="ruby-identifier">root</span>)
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16: <span class="ruby-ivar">@root</span> = <span class="ruby-identifier">root</span>
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17: <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-M000206" class="method-detail">
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<a name="M000206"></a>
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<div class="method-heading">
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<a href="#M000206" class="method-signature">
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<span class="method-name">_call</span><span class="method-args">(env)</span>
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</a>
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</div>
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<div class="method-description">
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000206-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000206-source">
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<pre>
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<span class="ruby-comment cmt"># File lib/rack/file.rb, line 25</span>
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25: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">_call</span>(<span class="ruby-identifier">env</span>)
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26: <span class="ruby-ivar">@path_info</span> = <span class="ruby-constant">Utils</span>.<span class="ruby-identifier">unescape</span>(<span class="ruby-identifier">env</span>[<span class="ruby-value str">"PATH_INFO"</span>])
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27: <span class="ruby-keyword kw">return</span> <span class="ruby-identifier">forbidden</span> <span class="ruby-keyword kw">if</span> <span class="ruby-ivar">@path_info</span>.<span class="ruby-identifier">include?</span> <span class="ruby-value str">".."</span>
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28:
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29: <span class="ruby-ivar">@path</span> = <span class="ruby-constant">F</span>.<span class="ruby-identifier">join</span>(<span class="ruby-ivar">@root</span>, <span class="ruby-ivar">@path_info</span>)
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30:
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31: <span class="ruby-keyword kw">begin</span>
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32: <span class="ruby-keyword kw">if</span> <span class="ruby-constant">F</span>.<span class="ruby-identifier">file?</span>(<span class="ruby-ivar">@path</span>) <span class="ruby-operator">&&</span> <span class="ruby-constant">F</span>.<span class="ruby-identifier">readable?</span>(<span class="ruby-ivar">@path</span>)
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33: <span class="ruby-identifier">serving</span>
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34: <span class="ruby-keyword kw">else</span>
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35: <span class="ruby-identifier">raise</span> <span class="ruby-constant">Errno</span><span class="ruby-operator">::</span><span class="ruby-constant">EPERM</span>
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36: <span class="ruby-keyword kw">end</span>
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37: <span class="ruby-keyword kw">rescue</span> <span class="ruby-constant">SystemCallError</span>
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38: <span class="ruby-identifier">not_found</span>
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39: <span class="ruby-keyword kw">end</span>
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40: <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-M000205" class="method-detail">
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<a name="M000205"></a>
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<div class="method-heading">
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<a href="#M000205" class="method-signature">
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<span class="method-name">call</span><span class="method-args">(env)</span>
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</a>
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</div>
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<div class="method-description">
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000205-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000205-source">
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<pre>
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<span class="ruby-comment cmt"># File lib/rack/file.rb, line 19</span>
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19: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
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20: <span class="ruby-identifier">dup</span>.<span class="ruby-identifier">_call</span>(<span class="ruby-identifier">env</span>)
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21: <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-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">each</span><span class="method-args">() {|part| ...}</span>
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</a>
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</div>
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<div class="method-description">
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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 lib/rack/file.rb, line 77</span>
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77: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">each</span>
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78: <span class="ruby-constant">F</span>.<span class="ruby-identifier">open</span>(<span class="ruby-ivar">@path</span>, <span class="ruby-value str">"rb"</span>) { <span class="ruby-operator">|</span><span class="ruby-identifier">file</span><span class="ruby-operator">|</span>
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79: <span class="ruby-keyword kw">while</span> <span class="ruby-identifier">part</span> = <span class="ruby-identifier">file</span>.<span class="ruby-identifier">read</span>(<span class="ruby-value">8192</span>)
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80: <span class="ruby-keyword kw">yield</span> <span class="ruby-identifier">part</span>
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81: <span class="ruby-keyword kw">end</span>
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82: }
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83: <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-M000207" class="method-detail">
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<a name="M000207"></a>
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<div class="method-heading">
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<a href="#M000207" class="method-signature">
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<span class="method-name">forbidden</span><span class="method-args">()</span>
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</a>
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</div>
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<div class="method-description">
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000207-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000207-source">
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<pre>
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<span class="ruby-comment cmt"># File lib/rack/file.rb, line 42</span>
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42: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">forbidden</span>
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43: <span class="ruby-identifier">body</span> = <span class="ruby-value str">"Forbidden\n"</span>
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44: [<span class="ruby-value">403</span>, {<span class="ruby-value str">"Content-Type"</span> =<span class="ruby-operator">></span> <span class="ruby-value str">"text/plain"</span>,
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45: <span class="ruby-value str">"Content-Length"</span> =<span class="ruby-operator">></span> <span class="ruby-identifier">body</span>.<span class="ruby-identifier">size</span>.<span class="ruby-identifier">to_s</span>},
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46: [<span class="ruby-identifier">body</span>]]
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47: <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">not_found</span><span class="method-args">()</span>
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</a>
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</div>
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<div class="method-description">
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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 lib/rack/file.rb, line 70</span>
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70: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">not_found</span>
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71: <span class="ruby-identifier">body</span> = <span class="ruby-node">"File not found: #{@path_info}\n"</span>
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72: [<span class="ruby-value">404</span>, {<span class="ruby-value str">"Content-Type"</span> =<span class="ruby-operator">></span> <span class="ruby-value str">"text/plain"</span>,
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73: <span class="ruby-value str">"Content-Length"</span> =<span class="ruby-operator">></span> <span class="ruby-identifier">body</span>.<span class="ruby-identifier">size</span>.<span class="ruby-identifier">to_s</span>},
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74: [<span class="ruby-identifier">body</span>]]
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75: <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-M000208" class="method-detail">
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<a name="M000208"></a>
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<div class="method-heading">
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<a href="#M000208" class="method-signature">
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<span class="method-name">serving</span><span class="method-args">()</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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NOTE:
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</p>
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<pre>
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We check via File::size? whether this file provides size info
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via stat (e.g. /proc files often don't), otherwise we have to
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figure it out by reading the whole file into memory. And while
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we're at it we also use this as body then.
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</pre>
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<p><a class="source-toggle" href="#"
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onclick="toggleCode('M000208-source');return false;">[Source]</a></p>
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<div class="method-source-code" id="M000208-source">
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<pre>
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<span class="ruby-comment cmt"># File lib/rack/file.rb, line 55</span>
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55: <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">serving</span>
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56: <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">size</span> = <span class="ruby-constant">F</span>.<span class="ruby-identifier">size?</span>(<span class="ruby-ivar">@path</span>)
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57: <span class="ruby-identifier">body</span> = <span class="ruby-keyword kw">self</span>
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58: <span class="ruby-keyword kw">else</span>
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59: <span class="ruby-identifier">body</span> = [<span class="ruby-constant">F</span>.<span class="ruby-identifier">read</span>(<span class="ruby-ivar">@path</span>)]
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60: <span class="ruby-identifier">size</span> = <span class="ruby-identifier">body</span>.<span class="ruby-identifier">first</span>.<span class="ruby-identifier">size</span>
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61: <span class="ruby-keyword kw">end</span>
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62:
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63: [<span class="ruby-value">200</span>, {
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64: <span class="ruby-value str">"Last-Modified"</span> =<span class="ruby-operator">></span> <span class="ruby-constant">F</span>.<span class="ruby-identifier">mtime</span>(<span class="ruby-ivar">@path</span>).<span class="ruby-identifier">httpdate</span>,
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65: <span class="ruby-value str">"Content-Type"</span> =<span class="ruby-operator">></span> <span class="ruby-constant">Mime</span>.<span class="ruby-identifier">mime_type</span>(<span class="ruby-constant">F</span>.<span class="ruby-identifier">extname</span>(<span class="ruby-ivar">@path</span>), <span class="ruby-value str">'text/plain'</span>),
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66: <span class="ruby-value str">"Content-Length"</span> =<span class="ruby-operator">></span> <span class="ruby-identifier">size</span>.<span class="ruby-identifier">to_s</span>
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67: }, <span class="ruby-identifier">body</span>]
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68: <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>
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</div>
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<div id="validator-badges">
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<p><small><a href="http://validator.w3.org/check/referer">[Validate]</a></small></p>
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</div>
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</body>
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</html> |