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plistifier/lib/cfpropertylist/doc/classes/CFPropertyList/Binary.src/M000019.html
Jeena Paradies 2bba8c5fee first commit
2010-06-12 17:59:50 +02:00

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<title>to_str (CFPropertyList::Binary)</title>
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<pre><span class="ruby-comment cmt"># File rbBinaryCFPropertyList.rb, line 65</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">to_str</span>(<span class="ruby-identifier">opts</span>={})
<span class="ruby-ivar">@unique_table</span> = {}
<span class="ruby-ivar">@count_objects</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@string_size</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@int_size</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@misc_size</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@object_refs</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@written_object_count</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@object_table</span> = []
<span class="ruby-ivar">@object_ref_size</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@offsets</span> = []
<span class="ruby-identifier">binary_str</span> = <span class="ruby-value str">&quot;bplist00&quot;</span>
<span class="ruby-identifier">unique_and_count_values</span>(<span class="ruby-identifier">opts</span>[<span class="ruby-identifier">:root</span>])
<span class="ruby-ivar">@count_objects</span> <span class="ruby-operator">+=</span> <span class="ruby-ivar">@unique_table</span>.<span class="ruby-identifier">count</span>
<span class="ruby-ivar">@object_ref_size</span> = <span class="ruby-constant">Binary</span>.<span class="ruby-identifier">bytes_needed</span>(<span class="ruby-ivar">@count_objects</span>)
<span class="ruby-identifier">file_size</span> = <span class="ruby-ivar">@string_size</span> <span class="ruby-operator">+</span> <span class="ruby-ivar">@int_size</span> <span class="ruby-operator">+</span> <span class="ruby-ivar">@misc_size</span> <span class="ruby-operator">+</span> <span class="ruby-ivar">@object_refs</span> <span class="ruby-operator">*</span> <span class="ruby-ivar">@object_ref_size</span> <span class="ruby-operator">+</span> <span class="ruby-value">40</span>
<span class="ruby-identifier">offset_size</span> = <span class="ruby-constant">Binary</span>.<span class="ruby-identifier">bytes_needed</span>(<span class="ruby-identifier">file_size</span>)
<span class="ruby-identifier">table_offset</span> = <span class="ruby-identifier">file_size</span> <span class="ruby-operator">-</span> <span class="ruby-value">32</span>
<span class="ruby-ivar">@object_table</span> = []
<span class="ruby-ivar">@written_object_count</span> = <span class="ruby-value">0</span>
<span class="ruby-ivar">@unique_table</span> = {} <span class="ruby-comment cmt"># we needed it to calculate several values, but now we need an empty table</span>
<span class="ruby-identifier">opts</span>[<span class="ruby-identifier">:root</span>].<span class="ruby-identifier">to_binary</span>(<span class="ruby-keyword kw">self</span>)
<span class="ruby-identifier">object_offset</span> = <span class="ruby-value">8</span>
<span class="ruby-identifier">offsets</span> = []
<span class="ruby-value">0</span>.<span class="ruby-identifier">upto</span>(<span class="ruby-ivar">@object_table</span>.<span class="ruby-identifier">count</span><span class="ruby-operator">-</span><span class="ruby-value">1</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">i</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">binary_str</span> <span class="ruby-operator">+=</span> <span class="ruby-ivar">@object_table</span>[<span class="ruby-identifier">i</span>]
<span class="ruby-identifier">offsets</span>[<span class="ruby-identifier">i</span>] = <span class="ruby-identifier">object_offset</span>
<span class="ruby-identifier">object_offset</span> <span class="ruby-operator">+=</span> <span class="ruby-ivar">@object_table</span>[<span class="ruby-identifier">i</span>].<span class="ruby-identifier">bytesize</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">offsets</span>.<span class="ruby-identifier">each</span> <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">offset</span><span class="ruby-operator">|</span>
<span class="ruby-identifier">binary_str</span> <span class="ruby-operator">+=</span> <span class="ruby-constant">Binary</span>.<span class="ruby-identifier">pack_it_with_size</span>(<span class="ruby-identifier">offset_size</span>,<span class="ruby-identifier">offset</span>)
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">binary_str</span> <span class="ruby-operator">+=</span> [<span class="ruby-identifier">offset_size</span>, <span class="ruby-ivar">@object_ref_size</span>].<span class="ruby-identifier">pack</span>(<span class="ruby-value str">&quot;x6CC&quot;</span>)
<span class="ruby-identifier">binary_str</span> <span class="ruby-operator">+=</span> [<span class="ruby-ivar">@count_objects</span>].<span class="ruby-identifier">pack</span>(<span class="ruby-value str">&quot;x4N&quot;</span>)
<span class="ruby-identifier">binary_str</span> <span class="ruby-operator">+=</span> [<span class="ruby-value">0</span>].<span class="ruby-identifier">pack</span>(<span class="ruby-value str">&quot;x4N&quot;</span>)
<span class="ruby-identifier">binary_str</span> <span class="ruby-operator">+=</span> [<span class="ruby-identifier">table_offset</span>].<span class="ruby-identifier">pack</span>(<span class="ruby-value str">&quot;x4N&quot;</span>)
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">binary_str</span>
<span class="ruby-keyword kw">end</span></pre>
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