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<h1>Source code for sqlobject.util.moduleloader</h1><div class="highlight"><pre>
<span></span><span class="kn">import</span> <span class="nn">imp</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">sys</span>
<div class="viewcode-block" id="load_module"><a class="viewcode-back" href="../../../api/sqlobject.util.moduleloader.html#sqlobject.util.moduleloader.load_module">[docs]</a><span class="k">def</span> <span class="nf">load_module</span><span class="p">(</span><span class="n">module_name</span><span class="p">):</span>
<span class="n">mod</span> <span class="o">=</span> <span class="nb">__import__</span><span class="p">(</span><span class="n">module_name</span><span class="p">)</span>
<span class="n">components</span> <span class="o">=</span> <span class="n">module_name</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'.'</span><span class="p">)</span>
<span class="k">for</span> <span class="n">comp</span> <span class="ow">in</span> <span class="n">components</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
<span class="n">mod</span> <span class="o">=</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">mod</span><span class="p">,</span> <span class="n">comp</span><span class="p">)</span>
<span class="k">return</span> <span class="n">mod</span>
</div>
<div class="viewcode-block" id="load_module_from_name"><a class="viewcode-back" href="../../../api/sqlobject.util.moduleloader.html#sqlobject.util.moduleloader.load_module_from_name">[docs]</a><span class="k">def</span> <span class="nf">load_module_from_name</span><span class="p">(</span><span class="n">filename</span><span class="p">,</span> <span class="n">module_name</span><span class="p">):</span>
<span class="k">if</span> <span class="n">module_name</span> <span class="ow">in</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">:</span>
<span class="k">return</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">[</span><span class="n">module_name</span><span class="p">]</span>
<span class="n">init_filename</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">filename</span><span class="p">),</span> <span class="s1">'__init__.py'</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span><span class="p">(</span><span class="n">init_filename</span><span class="p">):</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">f</span> <span class="o">=</span> <span class="nb">open</span><span class="p">(</span><span class="n">init_filename</span><span class="p">,</span> <span class="s1">'w'</span><span class="p">)</span>
<span class="k">except</span> <span class="p">(</span><span class="ne">OSError</span><span class="p">,</span> <span class="ne">IOError</span><span class="p">)</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">IOError</span><span class="p">(</span>
<span class="s1">'Cannot write __init__.py file into directory </span><span class="si">%s</span><span class="s1"> (</span><span class="si">%s</span><span class="s1">)</span><span class="se">\n</span><span class="s1">'</span>
<span class="o">%</span> <span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">filename</span><span class="p">),</span> <span class="n">e</span><span class="p">))</span>
<span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s1">'#</span><span class="se">\n</span><span class="s1">'</span><span class="p">)</span>
<span class="n">f</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="n">fp</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">if</span> <span class="n">module_name</span> <span class="ow">in</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">:</span>
<span class="k">return</span> <span class="n">sys</span><span class="o">.</span><span class="n">modules</span><span class="p">[</span><span class="n">module_name</span><span class="p">]</span>
<span class="k">if</span> <span class="s1">'.'</span> <span class="ow">in</span> <span class="n">module_name</span><span class="p">:</span>
<span class="n">parent_name</span> <span class="o">=</span> <span class="s1">'.'</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">module_name</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'.'</span><span class="p">)[:</span><span class="o">-</span><span class="mi">1</span><span class="p">])</span>
<span class="n">base_name</span> <span class="o">=</span> <span class="n">module_name</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">'.'</span><span class="p">)[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
<span class="n">load_module_from_name</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">filename</span><span class="p">),</span> <span class="n">parent_name</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">base_name</span> <span class="o">=</span> <span class="n">module_name</span>
<span class="n">fp</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">fp</span><span class="p">,</span> <span class="n">pathname</span><span class="p">,</span> <span class="n">stuff</span> <span class="o">=</span> <span class="n">imp</span><span class="o">.</span><span class="n">find_module</span><span class="p">(</span>
<span class="n">base_name</span><span class="p">,</span> <span class="p">[</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">filename</span><span class="p">)])</span>
<span class="n">module</span> <span class="o">=</span> <span class="n">imp</span><span class="o">.</span><span class="n">load_module</span><span class="p">(</span><span class="n">module_name</span><span class="p">,</span> <span class="n">fp</span><span class="p">,</span> <span class="n">pathname</span><span class="p">,</span> <span class="n">stuff</span><span class="p">)</span>
<span class="k">finally</span><span class="p">:</span>
<span class="k">if</span> <span class="n">fp</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">fp</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="k">return</span> <span class="n">module</span>
</pre></div></div>
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