40 lines
No EOL
3.8 KiB
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40 lines
No EOL
3.8 KiB
HTML
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<title>read_binary_int (CFPropertyList::Binary)</title>
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<pre><span class="ruby-comment cmt"># File rbBinaryCFPropertyList.rb, line 130</span>
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<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">read_binary_int</span>(<span class="ruby-identifier">fname</span>,<span class="ruby-identifier">fd</span>,<span class="ruby-identifier">length</span>)
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<span class="ruby-identifier">raise</span> <span class="ruby-constant">CFFormatError</span>.<span class="ruby-identifier">new</span>(<span class="ruby-node">"Integer greater than 8 bytes: #{length}"</span>) <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">length</span> <span class="ruby-operator">></span> <span class="ruby-value">3</span>
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<span class="ruby-identifier">nbytes</span> = <span class="ruby-value">1</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">length</span>
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<span class="ruby-identifier">val</span> = <span class="ruby-keyword kw">nil</span>
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<span class="ruby-identifier">buff</span> = <span class="ruby-identifier">fd</span>.<span class="ruby-identifier">read</span>(<span class="ruby-identifier">nbytes</span>)
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<span class="ruby-keyword kw">case</span> <span class="ruby-identifier">length</span>
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<span class="ruby-keyword kw">when</span> <span class="ruby-value">0</span> <span class="ruby-keyword kw">then</span>
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<span class="ruby-identifier">val</span> = <span class="ruby-identifier">buff</span>.<span class="ruby-identifier">unpack</span>(<span class="ruby-value str">"C"</span>)
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<span class="ruby-identifier">val</span> = <span class="ruby-identifier">val</span>[<span class="ruby-value">0</span>]
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<span class="ruby-keyword kw">when</span> <span class="ruby-value">1</span> <span class="ruby-keyword kw">then</span>
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<span class="ruby-identifier">val</span> = <span class="ruby-identifier">buff</span>.<span class="ruby-identifier">unpack</span>(<span class="ruby-value str">"n"</span>)
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<span class="ruby-identifier">val</span> = <span class="ruby-identifier">val</span>[<span class="ruby-value">0</span>]
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<span class="ruby-keyword kw">when</span> <span class="ruby-value">2</span> <span class="ruby-keyword kw">then</span>
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<span class="ruby-identifier">val</span> = <span class="ruby-identifier">buff</span>.<span class="ruby-identifier">unpack</span>(<span class="ruby-value str">"N"</span>)
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<span class="ruby-identifier">val</span> = <span class="ruby-identifier">val</span>[<span class="ruby-value">0</span>]
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<span class="ruby-keyword kw">when</span> <span class="ruby-value">3</span>
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<span class="ruby-identifier">hiword</span>,<span class="ruby-identifier">loword</span> = <span class="ruby-identifier">buff</span>.<span class="ruby-identifier">unpack</span>(<span class="ruby-value str">"NN"</span>)
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<span class="ruby-identifier">val</span> = <span class="ruby-identifier">hiword</span> <span class="ruby-operator"><<</span> <span class="ruby-value">32</span> <span class="ruby-operator">|</span> <span class="ruby-identifier">loword</span>
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<span class="ruby-keyword kw">end</span>
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<span class="ruby-keyword kw">return</span> <span class="ruby-constant">CFInteger</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">val</span>);
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<span class="ruby-keyword kw">end</span></pre>
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