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twentyone-world.github.io/source/filter.html
Gigi 855a4176e2 Initial import
2022-04-26 00:05:09 +02:00

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<div class='docs'><h1>filter.py</h1></div>
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<p>layer filter</p>
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<div class="highlight"><pre><span class="kn">import</span> <span class="nn">re</span></pre></div>
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<div class="highlight"><pre><span class="k">def</span> <span class="nf">filter_record</span><span class="p">(</span><span class="n">filt</span><span class="p">,</span> <span class="n">record</span><span class="p">):</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">filt</span><span class="p">,</span> <span class="nb">dict</span><span class="p">):</span>
<span class="k">if</span> <span class="s">&#39;and&#39;</span> <span class="ow">in</span> <span class="n">filt</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="bp">True</span>
<span class="k">for</span> <span class="n">sfilt</span> <span class="ow">in</span> <span class="n">filt</span><span class="p">[</span><span class="s">&#39;and&#39;</span><span class="p">]:</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">res</span> <span class="ow">and</span> <span class="n">filter_record</span><span class="p">(</span><span class="n">sfilt</span><span class="p">,</span> <span class="n">record</span><span class="p">)</span>
<span class="k">elif</span> <span class="s">&#39;or&#39;</span> <span class="ow">in</span> <span class="n">filt</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="bp">False</span>
<span class="k">for</span> <span class="n">sfilt</span> <span class="ow">in</span> <span class="n">filt</span><span class="p">[</span><span class="s">&#39;or&#39;</span><span class="p">]:</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">res</span> <span class="ow">or</span> <span class="n">filter_record</span><span class="p">(</span><span class="n">sfilt</span><span class="p">,</span> <span class="n">record</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">filt</span><span class="p">,</span> <span class="nb">list</span><span class="p">):</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">filter_single</span><span class="p">(</span><span class="n">filt</span><span class="p">,</span> <span class="n">record</span><span class="p">)</span>
<span class="k">return</span> <span class="n">res</span></pre></div>
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<div class="highlight"><pre><span class="k">def</span> <span class="nf">filter_single</span><span class="p">(</span><span class="n">filt</span><span class="p">,</span> <span class="n">record</span><span class="p">):</span>
<span class="n">key</span><span class="p">,</span> <span class="n">comp</span><span class="p">,</span> <span class="n">val</span> <span class="o">=</span> <span class="n">filt</span>
<span class="n">prop</span> <span class="o">=</span> <span class="n">record</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="n">comp</span> <span class="o">=</span> <span class="n">comp</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&#39; &#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="s">&#39;in&#39;</span> <span class="ow">in</span> <span class="n">comp</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">prop</span> <span class="ow">in</span> <span class="n">val</span>
<span class="k">elif</span> <span class="s">&#39;like&#39;</span> <span class="ow">in</span> <span class="n">comp</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">search</span><span class="p">(</span><span class="s">&#39;^&#39;</span> <span class="o">+</span> <span class="n">_escape_regex</span><span class="p">(</span><span class="n">val</span><span class="p">)</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">&#39;%&#39;</span><span class="p">,</span> <span class="s">&#39;.*&#39;</span><span class="p">)</span> <span class="o">+</span> <span class="s">&#39;$&#39;</span><span class="p">,</span> <span class="n">prop</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span>
<span class="k">elif</span> <span class="s">&#39;matches&#39;</span> <span class="ow">in</span> <span class="n">comp</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">search</span><span class="p">(</span><span class="n">val</span><span class="p">,</span> <span class="n">prop</span><span class="p">)</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span>
<span class="k">elif</span> <span class="s">&#39;is&#39;</span> <span class="ow">in</span> <span class="n">comp</span> <span class="ow">or</span> <span class="s">&#39;=&#39;</span> <span class="ow">in</span> <span class="n">comp</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">prop</span> <span class="o">==</span> <span class="n">val</span>
<span class="k">elif</span> <span class="s">&#39;greater&#39;</span> <span class="ow">in</span> <span class="n">comp</span> <span class="ow">or</span> <span class="p">(</span><span class="s">&#39;&gt;&#39;</span> <span class="ow">in</span> <span class="n">comp</span><span class="p">):</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">prop</span> <span class="o">&gt;</span> <span class="n">val</span>
<span class="k">elif</span> <span class="s">&#39;less&#39;</span> <span class="ow">in</span> <span class="n">comp</span> <span class="ow">or</span> <span class="s">&#39;&lt;&#39;</span> <span class="ow">in</span> <span class="n">comp</span><span class="p">:</span>
<span class="n">res</span> <span class="o">=</span> <span class="n">prop</span> <span class="o">&lt;</span> <span class="n">val</span>
<span class="k">if</span> <span class="s">&#39;not&#39;</span> <span class="ow">in</span> <span class="n">comp</span><span class="p">:</span>
<span class="k">return</span> <span class="ow">not</span> <span class="n">res</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">res</span></pre></div>
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<div class="highlight"><pre><span class="k">def</span> <span class="nf">_escape_regex</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
<span class="n">chars</span> <span class="o">=</span> <span class="p">(</span><span class="s">&#39;.&#39;</span><span class="p">,</span> <span class="s">&#39;*&#39;</span><span class="p">,</span> <span class="s">&#39;?&#39;</span><span class="p">,</span> <span class="s">&#39;+&#39;</span><span class="p">,</span> <span class="s">&#39;(&#39;</span><span class="p">,</span> <span class="s">&#39;)&#39;</span><span class="p">,</span> <span class="s">&#39;[&#39;</span><span class="p">,</span> <span class="s">&#39;]&#39;</span><span class="p">,</span> <span class="s">&#39;-&#39;</span><span class="p">)</span>
<span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">chars</span><span class="p">:</span>
<span class="n">s</span> <span class="o">=</span> <span class="n">s</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="s">&#39;</span><span class="se">\\</span><span class="s">&#39;</span> <span class="o">+</span> <span class="n">c</span><span class="p">)</span>
<span class="k">return</span> <span class="n">s</span>
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