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  <title>match_types (OpenID::Yadis)</title>
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  <pre><span class="ruby-comment cmt"># File lib/openid/yadis/accept.rb, line 80</span>
    <span class="ruby-keyword kw">def</span> <span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">match_types</span>(<span class="ruby-identifier">accept_types</span>, <span class="ruby-identifier">have_types</span>)
      <span class="ruby-comment cmt"># Given the result of parsing an Accept: header, and the</span>
      <span class="ruby-comment cmt"># available MIME types, return the acceptable types with their</span>
      <span class="ruby-comment cmt"># quality markdowns.</span>
      <span class="ruby-comment cmt">#</span>
      <span class="ruby-comment cmt"># For example:</span>
      <span class="ruby-comment cmt">#</span>
      <span class="ruby-comment cmt"># &gt;&gt;&gt; acceptable = parse_accept_header('text/html, text/plain; q=0.5')</span>
      <span class="ruby-comment cmt"># &gt;&gt;&gt; matchTypes(acceptable, ['text/plain', 'text/html', 'image/jpeg'])</span>
      <span class="ruby-comment cmt"># [('text/html', 1.0), ('text/plain', 0.5)]</span>
      <span class="ruby-comment cmt">#</span>
      <span class="ruby-comment cmt"># Type signature: ([(str, str, float)], [str]) -&gt; [(str, float)]</span>
      <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">accept_types</span>.<span class="ruby-identifier">nil?</span> <span class="ruby-keyword kw">or</span> <span class="ruby-identifier">accept_types</span> <span class="ruby-operator">==</span> []
        <span class="ruby-comment cmt"># Accept all of them</span>
        <span class="ruby-identifier">default</span> = <span class="ruby-value">1</span>
      <span class="ruby-keyword kw">else</span>
        <span class="ruby-identifier">default</span> = <span class="ruby-value">0</span>
      <span class="ruby-keyword kw">end</span>

      <span class="ruby-identifier">match_main</span> = {}
      <span class="ruby-identifier">match_sub</span> = {}
      <span class="ruby-identifier">accept_types</span>.<span class="ruby-identifier">each</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">main</span>, <span class="ruby-identifier">sub</span>, <span class="ruby-identifier">q</span><span class="ruby-operator">|</span>
        <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">main</span> <span class="ruby-operator">==</span> <span class="ruby-value str">'*'</span>
          <span class="ruby-identifier">default</span> = [<span class="ruby-identifier">default</span>, <span class="ruby-identifier">q</span>].<span class="ruby-identifier">max</span>
          <span class="ruby-keyword kw">next</span>
        <span class="ruby-keyword kw">elsif</span> <span class="ruby-identifier">sub</span> <span class="ruby-operator">==</span> <span class="ruby-value str">'*'</span>
          <span class="ruby-identifier">match_main</span>[<span class="ruby-identifier">main</span>] = [<span class="ruby-identifier">match_main</span>.<span class="ruby-identifier">fetch</span>(<span class="ruby-identifier">main</span>, <span class="ruby-value">0</span>), <span class="ruby-identifier">q</span>].<span class="ruby-identifier">max</span>
        <span class="ruby-keyword kw">else</span>
          <span class="ruby-identifier">match_sub</span>[[<span class="ruby-identifier">main</span>, <span class="ruby-identifier">sub</span>]] = [<span class="ruby-identifier">match_sub</span>.<span class="ruby-identifier">fetch</span>([<span class="ruby-identifier">main</span>, <span class="ruby-identifier">sub</span>], <span class="ruby-value">0</span>), <span class="ruby-identifier">q</span>].<span class="ruby-identifier">max</span>
        <span class="ruby-keyword kw">end</span>
      }

      <span class="ruby-identifier">accepted_list</span> = []
      <span class="ruby-identifier">order_maintainer</span> = <span class="ruby-value">0</span>
      <span class="ruby-identifier">have_types</span>.<span class="ruby-identifier">each</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">mtype</span><span class="ruby-operator">|</span>
        <span class="ruby-identifier">main</span>, <span class="ruby-identifier">sub</span> = <span class="ruby-identifier">mtype</span>.<span class="ruby-identifier">split</span>(<span class="ruby-value str">'/'</span>, <span class="ruby-value">2</span>)
        <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">match_sub</span>.<span class="ruby-identifier">member?</span>([<span class="ruby-identifier">main</span>, <span class="ruby-identifier">sub</span>])
          <span class="ruby-identifier">q</span> = <span class="ruby-identifier">match_sub</span>[[<span class="ruby-identifier">main</span>, <span class="ruby-identifier">sub</span>]]
        <span class="ruby-keyword kw">else</span>
          <span class="ruby-identifier">q</span> = <span class="ruby-identifier">match_main</span>.<span class="ruby-identifier">fetch</span>(<span class="ruby-identifier">main</span>, <span class="ruby-identifier">default</span>)
        <span class="ruby-keyword kw">end</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-identifier">accepted_list</span> <span class="ruby-operator">&lt;&lt;</span> [<span class="ruby-value">1</span> <span class="ruby-operator">-</span> <span class="ruby-identifier">q</span>, <span class="ruby-identifier">order_maintainer</span>, <span class="ruby-identifier">q</span>, <span class="ruby-identifier">mtype</span>]
          <span class="ruby-identifier">order_maintainer</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
        <span class="ruby-keyword kw">end</span>
      }

      <span class="ruby-identifier">accepted_list</span>.<span class="ruby-identifier">sort!</span>
      <span class="ruby-keyword kw">return</span> <span class="ruby-identifier">accepted_list</span>.<span class="ruby-identifier">collect</span> { <span class="ruby-operator">|</span><span class="ruby-identifier">_</span>, <span class="ruby-identifier">_</span>, <span class="ruby-identifier">q</span>, <span class="ruby-identifier">mtype</span><span class="ruby-operator">|</span> [<span class="ruby-identifier">mtype</span>, <span class="ruby-identifier">q</span>] }
    <span class="ruby-keyword kw">end</span></pre>
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