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<title>unescape_bytea (ActiveRecord::ConnectionAdapters::PostgreSQLAdapter)</title>
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<pre><span class="ruby-comment cmt"># File lib/active_record/connection_adapters/postgresql_adapter.rb, line 331</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">unescape_bytea</span>(<span class="ruby-identifier">value</span>)
<span class="ruby-comment cmt"># In each case, check if the value actually is escaped PostgreSQL bytea output</span>
<span class="ruby-comment cmt"># or an unescaped Active Record attribute that was just written.</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-constant">PGconn</span>.<span class="ruby-identifier">respond_to?</span>(<span class="ruby-identifier">:unescape_bytea</span>)
<span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">class</span>.<span class="ruby-identifier">instance_eval</span> <span class="ruby-keyword kw">do</span>
<span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:unescape_bytea</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">value</span><span class="ruby-operator">|</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">value</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/\\\d{3}/</span>
<span class="ruby-constant">PGconn</span>.<span class="ruby-identifier">unescape_bytea</span>(<span class="ruby-identifier">value</span>)
<span class="ruby-keyword kw">else</span>
<span class="ruby-identifier">value</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">else</span>
<span class="ruby-keyword kw">self</span>.<span class="ruby-identifier">class</span>.<span class="ruby-identifier">instance_eval</span> <span class="ruby-keyword kw">do</span>
<span class="ruby-identifier">define_method</span>(<span class="ruby-identifier">:unescape_bytea</span>) <span class="ruby-keyword kw">do</span> <span class="ruby-operator">|</span><span class="ruby-identifier">value</span><span class="ruby-operator">|</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">value</span> <span class="ruby-operator">=~</span> <span class="ruby-regexp re">/\\\d{3}/</span>
<span class="ruby-identifier">result</span> = <span class="ruby-value str">''</span>
<span class="ruby-identifier">i</span>, <span class="ruby-identifier">max</span> = <span class="ruby-value">0</span>, <span class="ruby-identifier">value</span>.<span class="ruby-identifier">size</span>
<span class="ruby-keyword kw">while</span> <span class="ruby-identifier">i</span> <span class="ruby-operator"><</span> <span class="ruby-identifier">max</span>
<span class="ruby-identifier">char</span> = <span class="ruby-identifier">value</span>[<span class="ruby-identifier">i</span>]
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">char</span> <span class="ruby-operator">==</span> <span class="ruby-value">?\\</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">value</span>[<span class="ruby-identifier">i</span><span class="ruby-operator">+</span><span class="ruby-value">1</span>] <span class="ruby-operator">==</span> <span class="ruby-value">?\\</span>
<span class="ruby-identifier">char</span> = <span class="ruby-value">?\\</span>
<span class="ruby-identifier">i</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
<span class="ruby-keyword kw">else</span>
<span class="ruby-identifier">char</span> = <span class="ruby-identifier">value</span>[<span class="ruby-identifier">i</span><span class="ruby-operator">+</span><span class="ruby-value">1</span><span class="ruby-operator">..</span><span class="ruby-identifier">i</span><span class="ruby-operator">+</span><span class="ruby-value">3</span>].<span class="ruby-identifier">oct</span>
<span class="ruby-identifier">i</span> <span class="ruby-operator">+=</span> <span class="ruby-value">3</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">result</span> <span class="ruby-operator"><<</span> <span class="ruby-identifier">char</span>
<span class="ruby-identifier">i</span> <span class="ruby-operator">+=</span> <span class="ruby-value">1</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">result</span>
<span class="ruby-keyword kw">else</span>
<span class="ruby-identifier">value</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-identifier">unescape_bytea</span>(<span class="ruby-identifier">value</span>)
<span class="ruby-keyword kw">end</span></pre>
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distrib
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Mandriva
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2010.0
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i586
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