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  <pre><span class="ruby-comment cmt"># File lib/rack/lobster.rb, line 32</span>
    <span class="ruby-keyword kw">def</span> <span class="ruby-identifier">call</span>(<span class="ruby-identifier">env</span>)
      <span class="ruby-identifier">req</span> = <span class="ruby-constant">Request</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">env</span>)
      <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">req</span>.<span class="ruby-constant">GET</span>[<span class="ruby-value str">&quot;flip&quot;</span>] <span class="ruby-operator">==</span> <span class="ruby-value str">&quot;left&quot;</span>
        <span class="ruby-identifier">lobster</span> = <span class="ruby-constant">LobsterString</span>.<span class="ruby-identifier">split</span>(<span class="ruby-value str">&quot;\n&quot;</span>).<span class="ruby-identifier">map</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">line</span><span class="ruby-operator">|</span>
          <span class="ruby-identifier">line</span>.<span class="ruby-identifier">ljust</span>(<span class="ruby-value">42</span>).<span class="ruby-identifier">reverse</span>.
            <span class="ruby-identifier">gsub</span>(<span class="ruby-value str">'\\'</span>, <span class="ruby-value str">'TEMP'</span>).
            <span class="ruby-identifier">gsub</span>(<span class="ruby-value str">'/'</span>, <span class="ruby-value str">'\\'</span>).
            <span class="ruby-identifier">gsub</span>(<span class="ruby-value str">'TEMP'</span>, <span class="ruby-value str">'/'</span>).
            <span class="ruby-identifier">gsub</span>(<span class="ruby-value str">'{'</span>,<span class="ruby-value str">'}'</span>).
            <span class="ruby-identifier">gsub</span>(<span class="ruby-value str">'('</span>,<span class="ruby-value str">')'</span>)
        <span class="ruby-keyword kw">end</span>.<span class="ruby-identifier">join</span>(<span class="ruby-value str">&quot;\n&quot;</span>)
        <span class="ruby-identifier">href</span> = <span class="ruby-value str">&quot;?flip=right&quot;</span>
      <span class="ruby-keyword kw">elsif</span> <span class="ruby-identifier">req</span>.<span class="ruby-constant">GET</span>[<span class="ruby-value str">&quot;flip&quot;</span>] <span class="ruby-operator">==</span> <span class="ruby-value str">&quot;crash&quot;</span>
        <span class="ruby-identifier">raise</span> <span class="ruby-value str">&quot;Lobster crashed&quot;</span>
      <span class="ruby-keyword kw">else</span>
        <span class="ruby-identifier">lobster</span> = <span class="ruby-constant">LobsterString</span>
        <span class="ruby-identifier">href</span> = <span class="ruby-value str">&quot;?flip=left&quot;</span>
      <span class="ruby-keyword kw">end</span>

      <span class="ruby-identifier">res</span> = <span class="ruby-constant">Response</span>.<span class="ruby-identifier">new</span>
      <span class="ruby-identifier">res</span>.<span class="ruby-identifier">write</span> <span class="ruby-value str">&quot;&lt;title&gt;Lobstericious!&lt;/title&gt;&quot;</span>
      <span class="ruby-identifier">res</span>.<span class="ruby-identifier">write</span> <span class="ruby-value str">&quot;&lt;pre&gt;&quot;</span>
      <span class="ruby-identifier">res</span>.<span class="ruby-identifier">write</span> <span class="ruby-identifier">lobster</span>
      <span class="ruby-identifier">res</span>.<span class="ruby-identifier">write</span> <span class="ruby-value str">&quot;&lt;/pre&gt;&quot;</span>
      <span class="ruby-identifier">res</span>.<span class="ruby-identifier">write</span> <span class="ruby-node">&quot;&lt;p&gt;&lt;a href='#{href}'&gt;flip!&lt;/a&gt;&lt;/p&gt;&quot;</span>
      <span class="ruby-identifier">res</span>.<span class="ruby-identifier">write</span> <span class="ruby-value str">&quot;&lt;p&gt;&lt;a href='?flip=crash'&gt;crash!&lt;/a&gt;&lt;/p&gt;&quot;</span>
      <span class="ruby-identifier">res</span>.<span class="ruby-identifier">finish</span>
    <span class="ruby-keyword kw">end</span></pre>
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