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<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <head> <title>select_best_encoding (lib/rack/utils.rb)</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <link rel="stylesheet" href="../../../.././rdoc-style.css" type="text/css" media="screen" /> </head> <body class="standalone-code"> <pre><span class="ruby-comment cmt"># File lib/rack/utils.rb, line 246</span> <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">select_best_encoding</span>(<span class="ruby-identifier">available_encodings</span>, <span class="ruby-identifier">accept_encoding</span>) <span class="ruby-comment cmt"># http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html</span> <span class="ruby-identifier">expanded_accept_encoding</span> = <span class="ruby-identifier">accept_encoding</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">m</span>, <span class="ruby-identifier">q</span><span class="ruby-operator">|</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">m</span> <span class="ruby-operator">==</span> <span class="ruby-value str">"*"</span> (<span class="ruby-identifier">available_encodings</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">accept_encoding</span>.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">m2</span>, <span class="ruby-identifier">_</span><span class="ruby-operator">|</span> <span class="ruby-identifier">m2</span> }).<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">m2</span><span class="ruby-operator">|</span> [<span class="ruby-identifier">m2</span>, <span class="ruby-identifier">q</span>] } <span class="ruby-keyword kw">else</span> [[<span class="ruby-identifier">m</span>, <span class="ruby-identifier">q</span>]] <span class="ruby-keyword kw">end</span> }.<span class="ruby-identifier">inject</span>([]) { <span class="ruby-operator">|</span><span class="ruby-identifier">mem</span>, <span class="ruby-identifier">list</span><span class="ruby-operator">|</span> <span class="ruby-identifier">mem</span> <span class="ruby-operator">+</span> <span class="ruby-identifier">list</span> } <span class="ruby-identifier">encoding_candidates</span> = <span class="ruby-identifier">expanded_accept_encoding</span>.<span class="ruby-identifier">sort_by</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">_</span>, <span class="ruby-identifier">q</span><span class="ruby-operator">|</span> <span class="ruby-operator">-</span><span class="ruby-identifier">q</span> }.<span class="ruby-identifier">map</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">m</span>, <span class="ruby-identifier">_</span><span class="ruby-operator">|</span> <span class="ruby-identifier">m</span> } <span class="ruby-keyword kw">unless</span> <span class="ruby-identifier">encoding_candidates</span>.<span class="ruby-identifier">include?</span>(<span class="ruby-value str">"identity"</span>) <span class="ruby-identifier">encoding_candidates</span>.<span class="ruby-identifier">push</span>(<span class="ruby-value str">"identity"</span>) <span class="ruby-keyword kw">end</span> <span class="ruby-identifier">expanded_accept_encoding</span>.<span class="ruby-identifier">each</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">m</span>, <span class="ruby-identifier">q</span><span class="ruby-operator">|</span> <span class="ruby-identifier">encoding_candidates</span>.<span class="ruby-identifier">delete</span>(<span class="ruby-identifier">m</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">q</span> <span class="ruby-operator">==</span> <span class="ruby-value">0</span><span class="ruby-value">.0</span> } <span class="ruby-keyword kw">return</span> (<span class="ruby-identifier">encoding_candidates</span> <span class="ruby-operator">&</span> <span class="ruby-identifier">available_encodings</span>)[<span class="ruby-value">0</span>] <span class="ruby-keyword kw">end</span></pre> </body> </html>
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