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<h1>Source code for searxng_extra.update.update_engine_traits</h1><div class="highlight"><pre>
<span></span><span class="ch">#!/usr/bin/env python</span>
<span class="c1"># SPDX-License-Identifier: AGPL-3.0-or-later</span>
<span class="sd">&quot;&quot;&quot;Update :py:obj:`searx.enginelib.traits.EngineTraitsMap` and :origin:`searx/languages.py`</span>
<span class="sd">:py:obj:`searx.enginelib.traits.EngineTraitsMap.ENGINE_TRAITS_FILE`:</span>
<span class="sd"> Persistence of engines traits, fetched from the engines.</span>
<span class="sd">:origin:`searx/languages.py`</span>
<span class="sd"> Is generated from intersecting each engine&#39;s supported traits.</span>
<span class="sd">The script :origin:`searxng_extra/update/update_engine_traits.py` is called in</span>
<span class="sd">the :origin:`CI Update data ... &lt;.github/workflows/data-update.yml&gt;`</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="c1"># pylint: disable=invalid-name</span>
<span class="kn">from</span> <span class="nn">unicodedata</span> <span class="kn">import</span> <span class="n">lookup</span>
<span class="kn">from</span> <span class="nn">pathlib</span> <span class="kn">import</span> <span class="n">Path</span>
<span class="kn">from</span> <span class="nn">pprint</span> <span class="kn">import</span> <span class="n">pformat</span>
<span class="kn">import</span> <span class="nn">babel</span>
<span class="kn">from</span> <span class="nn">searx</span> <span class="kn">import</span> <span class="n">settings</span><span class="p">,</span> <span class="n">searx_dir</span>
<span class="kn">from</span> <span class="nn">searx</span> <span class="kn">import</span> <span class="n">network</span>
<span class="kn">from</span> <span class="nn">searx.engines</span> <span class="kn">import</span> <span class="n">load_engines</span>
<span class="kn">from</span> <span class="nn">searx.enginelib.traits</span> <span class="kn">import</span> <span class="n">EngineTraitsMap</span>
<span class="c1"># Output files.</span>
<span class="n">languages_file</span> <span class="o">=</span> <span class="n">Path</span><span class="p">(</span><span class="n">searx_dir</span><span class="p">)</span> <span class="o">/</span> <span class="s1">&#39;sxng_locales.py&#39;</span>
<span class="n">languages_file_header</span> <span class="o">=</span> <span class="s2">&quot;&quot;&quot;</span><span class="se">\</span>
<span class="s2"># SPDX-License-Identifier: AGPL-3.0-or-later</span>
<span class="s2">&#39;&#39;&#39;List of SearXNG&#39;s locale codes.</span>
<span class="s2">.. hint::</span>
<span class="s2"> Don&#39;t modify this file, this file is generated by::</span>
<span class="s2"> ./manage data.traits</span>
<span class="s2">&#39;&#39;&#39;</span>
<span class="s2">sxng_locales = (</span>
<span class="s2">&quot;&quot;&quot;</span>
<span class="n">languages_file_footer</span> <span class="o">=</span> <span class="s2">&quot;&quot;&quot;,</span>
<span class="s2">)</span>
<span class="s2">&#39;&#39;&#39;</span>
<span class="s2">A list of five-digit tuples:</span>
<span class="s2">0. SearXNG&#39;s internal locale tag (a language or region tag)</span>
<span class="s2">1. Name of the language (:py:obj:`babel.core.Locale.get_language_name`)</span>
<span class="s2">2. For region tags the name of the region (:py:obj:`babel.core.Locale.get_territory_name`).</span>
<span class="s2"> Empty string for language tags.</span>
<span class="s2">3. English language name (from :py:obj:`babel.core.Locale.english_name`)</span>
<span class="s2">4. Unicode flag (emoji) that fits to SearXNG&#39;s internal region tag. Languages</span>
<span class="s2"> are represented by a globe (</span><span class="se">\U0001F310</span><span class="s2">)</span>
<span class="s2">.. code:: python</span>
<span class="s2"> (&#39;en&#39;, &#39;English&#39;, &#39;&#39;, &#39;English&#39;, &#39;</span><span class="se">\U0001f310</span><span class="s2">&#39;),</span>
<span class="s2"> (&#39;en-CA&#39;, &#39;English&#39;, &#39;Canada&#39;, &#39;English&#39;, &#39;</span><span class="se">\U0001f1e8\U0001f1e6</span><span class="s2">&#39;),</span>
<span class="s2"> (&#39;en-US&#39;, &#39;English&#39;, &#39;United States&#39;, &#39;English&#39;, &#39;</span><span class="se">\U0001f1fa\U0001f1f8</span><span class="s2">&#39;),</span>
<span class="s2"> ..</span>
<span class="s2"> (&#39;fr&#39;, &#39;Français&#39;, &#39;&#39;, &#39;French&#39;, &#39;</span><span class="se">\U0001f310</span><span class="s2">&#39;),</span>
<span class="s2"> (&#39;fr-BE&#39;, &#39;Français&#39;, &#39;Belgique&#39;, &#39;French&#39;, &#39;</span><span class="se">\U0001f1e7\U0001f1ea</span><span class="s2">&#39;),</span>
<span class="s2"> (&#39;fr-CA&#39;, &#39;Français&#39;, &#39;Canada&#39;, &#39;French&#39;, &#39;</span><span class="se">\U0001f1e8\U0001f1e6</span><span class="s2">&#39;),</span>
<span class="s2">:meta hide-value:</span>
<span class="s2">&#39;&#39;&#39;</span>
<span class="s2">&quot;&quot;&quot;</span>
<span class="n">lang2emoji</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;ha&#39;</span><span class="p">:</span> <span class="s1">&#39;</span><span class="se">\U0001F1F3\U0001F1EA</span><span class="s1">&#39;</span><span class="p">,</span> <span class="c1"># Hausa / Niger</span>
<span class="s1">&#39;bs&#39;</span><span class="p">:</span> <span class="s1">&#39;</span><span class="se">\U0001F1E7\U0001F1E6</span><span class="s1">&#39;</span><span class="p">,</span> <span class="c1"># Bosnian / Bosnia &amp; Herzegovina</span>
<span class="s1">&#39;jp&#39;</span><span class="p">:</span> <span class="s1">&#39;</span><span class="se">\U0001F1EF\U0001F1F5</span><span class="s1">&#39;</span><span class="p">,</span> <span class="c1"># Japanese</span>
<span class="s1">&#39;ua&#39;</span><span class="p">:</span> <span class="s1">&#39;</span><span class="se">\U0001F1FA\U0001F1E6</span><span class="s1">&#39;</span><span class="p">,</span> <span class="c1"># Ukrainian</span>
<span class="s1">&#39;he&#39;</span><span class="p">:</span> <span class="s1">&#39;</span><span class="se">\U0001F1EE\U0001F1F1</span><span class="s1">&#39;</span><span class="p">,</span> <span class="c1"># Hebrew</span>
<span class="p">}</span>
<span class="k">def</span> <span class="nf">main</span><span class="p">():</span>
<span class="n">load_engines</span><span class="p">(</span><span class="n">settings</span><span class="p">[</span><span class="s1">&#39;engines&#39;</span><span class="p">])</span>
<span class="c1"># traits_map = EngineTraitsMap.from_data()</span>
<span class="n">traits_map</span> <span class="o">=</span> <span class="n">fetch_traits_map</span><span class="p">()</span>
<span class="n">sxng_tag_list</span> <span class="o">=</span> <span class="n">filter_locales</span><span class="p">(</span><span class="n">traits_map</span><span class="p">)</span>
<span class="n">write_languages_file</span><span class="p">(</span><span class="n">sxng_tag_list</span><span class="p">)</span>
<div class="viewcode-block" id="fetch_traits_map">
<a class="viewcode-back" href="../../../dev/searxng_extra/update.html#searxng_extra.update.update_engine_traits.fetch_traits_map">[docs]</a>
<span class="k">def</span> <span class="nf">fetch_traits_map</span><span class="p">():</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Fetchs supported languages for each engine and writes json file with those.&quot;&quot;&quot;</span>
<span class="n">network</span><span class="o">.</span><span class="n">set_timeout_for_thread</span><span class="p">(</span><span class="mf">10.0</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">log</span><span class="p">(</span><span class="n">msg</span><span class="p">):</span>
<span class="nb">print</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
<span class="n">traits_map</span> <span class="o">=</span> <span class="n">EngineTraitsMap</span><span class="o">.</span><span class="n">fetch_traits</span><span class="p">(</span><span class="n">log</span><span class="o">=</span><span class="n">log</span><span class="p">)</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;fetched properties from </span><span class="si">%s</span><span class="s2"> engines&quot;</span> <span class="o">%</span> <span class="nb">len</span><span class="p">(</span><span class="n">traits_map</span><span class="p">))</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;write json file: </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="n">traits_map</span><span class="o">.</span><span class="n">ENGINE_TRAITS_FILE</span><span class="p">)</span>
<span class="n">traits_map</span><span class="o">.</span><span class="n">save_data</span><span class="p">()</span>
<span class="k">return</span> <span class="n">traits_map</span></div>
<div class="viewcode-block" id="filter_locales">
<a class="viewcode-back" href="../../../dev/searxng_extra/update.html#searxng_extra.update.update_engine_traits.filter_locales">[docs]</a>
<span class="k">def</span> <span class="nf">filter_locales</span><span class="p">(</span><span class="n">traits_map</span><span class="p">:</span> <span class="n">EngineTraitsMap</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Filter language &amp; region tags by a threshold.&quot;&quot;&quot;</span>
<span class="n">min_eng_per_region</span> <span class="o">=</span> <span class="mi">15</span>
<span class="n">min_eng_per_lang</span> <span class="o">=</span> <span class="mi">20</span>
<span class="n">_</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">eng</span> <span class="ow">in</span> <span class="n">traits_map</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
<span class="k">for</span> <span class="n">reg</span> <span class="ow">in</span> <span class="n">eng</span><span class="o">.</span><span class="n">regions</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
<span class="n">_</span><span class="p">[</span><span class="n">reg</span><span class="p">]</span> <span class="o">=</span> <span class="n">_</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">reg</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
<span class="n">regions</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">k</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">_</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">v</span> <span class="o">&gt;=</span> <span class="n">min_eng_per_region</span><span class="p">)</span>
<span class="n">lang_from_region</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">k</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39;-&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">regions</span><span class="p">)</span>
<span class="n">_</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">eng</span> <span class="ow">in</span> <span class="n">traits_map</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
<span class="k">for</span> <span class="n">lang</span> <span class="ow">in</span> <span class="n">eng</span><span class="o">.</span><span class="n">languages</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
<span class="c1"># ignore script types like zh_Hant, zh_Hans or sr_Latin, pa_Arab (they</span>
<span class="c1"># already counted by existence of &#39;zh&#39; or &#39;sr&#39;, &#39;pa&#39;)</span>
<span class="k">if</span> <span class="s1">&#39;_&#39;</span> <span class="ow">in</span> <span class="n">lang</span><span class="p">:</span>
<span class="c1"># print(&quot;ignore %s&quot; % lang)</span>
<span class="k">continue</span>
<span class="n">_</span><span class="p">[</span><span class="n">lang</span><span class="p">]</span> <span class="o">=</span> <span class="n">_</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">lang</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span>
<span class="n">languages</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">k</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">_</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">v</span> <span class="o">&gt;=</span> <span class="n">min_eng_per_lang</span><span class="p">)</span>
<span class="n">sxng_tag_list</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
<span class="n">sxng_tag_list</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">regions</span><span class="p">)</span>
<span class="n">sxng_tag_list</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">lang_from_region</span><span class="p">)</span>
<span class="n">sxng_tag_list</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">languages</span><span class="p">)</span>
<span class="k">return</span> <span class="n">sxng_tag_list</span></div>
<span class="k">def</span> <span class="nf">write_languages_file</span><span class="p">(</span><span class="n">sxng_tag_list</span><span class="p">):</span>
<span class="n">language_codes</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">sxng_tag</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">sxng_tag_list</span><span class="p">):</span>
<span class="n">sxng_locale</span><span class="p">:</span> <span class="n">babel</span><span class="o">.</span><span class="n">Locale</span> <span class="o">=</span> <span class="n">babel</span><span class="o">.</span><span class="n">Locale</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="n">sxng_tag</span><span class="p">,</span> <span class="n">sep</span><span class="o">=</span><span class="s1">&#39;-&#39;</span><span class="p">)</span>
<span class="n">flag</span> <span class="o">=</span> <span class="n">get_unicode_flag</span><span class="p">(</span><span class="n">sxng_locale</span><span class="p">)</span> <span class="ow">or</span> <span class="s1">&#39;&#39;</span>
<span class="n">item</span> <span class="o">=</span> <span class="p">(</span>
<span class="n">sxng_tag</span><span class="p">,</span>
<span class="n">sxng_locale</span><span class="o">.</span><span class="n">get_language_name</span><span class="p">()</span><span class="o">.</span><span class="n">title</span><span class="p">(),</span> <span class="c1"># type: ignore</span>
<span class="n">sxng_locale</span><span class="o">.</span><span class="n">get_territory_name</span><span class="p">()</span> <span class="ow">or</span> <span class="s1">&#39;&#39;</span><span class="p">,</span>
<span class="n">sxng_locale</span><span class="o">.</span><span class="n">english_name</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39; (&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span> <span class="k">if</span> <span class="n">sxng_locale</span><span class="o">.</span><span class="n">english_name</span> <span class="k">else</span> <span class="s1">&#39;&#39;</span><span class="p">,</span>
<span class="n">UnicodeEscape</span><span class="p">(</span><span class="n">flag</span><span class="p">),</span>
<span class="p">)</span>
<span class="n">language_codes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">item</span><span class="p">)</span>
<span class="n">language_codes</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">language_codes</span><span class="p">)</span>
<span class="k">with</span> <span class="n">languages_file</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="s1">&#39;w&#39;</span><span class="p">,</span> <span class="n">encoding</span><span class="o">=</span><span class="s1">&#39;utf-8&#39;</span><span class="p">)</span> <span class="k">as</span> <span class="n">new_file</span><span class="p">:</span>
<span class="n">file_content</span> <span class="o">=</span> <span class="s2">&quot;</span><span class="si">{header}</span><span class="s2"> </span><span class="si">{language_codes}{footer}</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
<span class="n">header</span><span class="o">=</span><span class="n">languages_file_header</span><span class="p">,</span>
<span class="n">language_codes</span><span class="o">=</span><span class="n">pformat</span><span class="p">(</span><span class="n">language_codes</span><span class="p">,</span> <span class="n">width</span><span class="o">=</span><span class="mi">120</span><span class="p">,</span> <span class="n">indent</span><span class="o">=</span><span class="mi">4</span><span class="p">)[</span><span class="mi">1</span><span class="p">:</span><span class="o">-</span><span class="mi">1</span><span class="p">],</span>
<span class="n">footer</span><span class="o">=</span><span class="n">languages_file_footer</span><span class="p">,</span>
<span class="p">)</span>
<span class="n">new_file</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">file_content</span><span class="p">)</span>
<span class="n">new_file</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<div class="viewcode-block" id="UnicodeEscape">
<a class="viewcode-back" href="../../../dev/searxng_extra/update.html#searxng_extra.update.update_engine_traits.UnicodeEscape">[docs]</a>
<span class="k">class</span> <span class="nc">UnicodeEscape</span><span class="p">(</span><span class="nb">str</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Escape unicode string in :py:obj:`pprint.pformat`&quot;&quot;&quot;</span>
<span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="s2">&quot;&#39;&quot;</span> <span class="o">+</span> <span class="s2">&quot;&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">([</span><span class="nb">chr</span><span class="p">(</span><span class="n">c</span><span class="p">)</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">&#39;unicode-escape&#39;</span><span class="p">)])</span> <span class="o">+</span> <span class="s2">&quot;&#39;&quot;</span></div>
<div class="viewcode-block" id="get_unicode_flag">
<a class="viewcode-back" href="../../../dev/searxng_extra/update.html#searxng_extra.update.update_engine_traits.get_unicode_flag">[docs]</a>
<span class="k">def</span> <span class="nf">get_unicode_flag</span><span class="p">(</span><span class="n">locale</span><span class="p">:</span> <span class="n">babel</span><span class="o">.</span><span class="n">Locale</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Determine a unicode flag (emoji) that fits to the ``locale``&quot;&quot;&quot;</span>
<span class="n">emoji</span> <span class="o">=</span> <span class="n">lang2emoji</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">locale</span><span class="o">.</span><span class="n">language</span><span class="p">)</span>
<span class="k">if</span> <span class="n">emoji</span><span class="p">:</span>
<span class="k">return</span> <span class="n">emoji</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">locale</span><span class="o">.</span><span class="n">territory</span><span class="p">:</span>
<span class="k">return</span> <span class="s1">&#39;</span><span class="se">\U0001F310</span><span class="s1">&#39;</span>
<span class="n">emoji</span> <span class="o">=</span> <span class="n">lang2emoji</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">locale</span><span class="o">.</span><span class="n">territory</span><span class="o">.</span><span class="n">lower</span><span class="p">())</span>
<span class="k">if</span> <span class="n">emoji</span><span class="p">:</span>
<span class="k">return</span> <span class="n">emoji</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">c1</span> <span class="o">=</span> <span class="n">lookup</span><span class="p">(</span><span class="s1">&#39;REGIONAL INDICATOR SYMBOL LETTER &#39;</span> <span class="o">+</span> <span class="n">locale</span><span class="o">.</span><span class="n">territory</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
<span class="n">c2</span> <span class="o">=</span> <span class="n">lookup</span><span class="p">(</span><span class="s1">&#39;REGIONAL INDICATOR SYMBOL LETTER &#39;</span> <span class="o">+</span> <span class="n">locale</span><span class="o">.</span><span class="n">territory</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
<span class="c1"># print(&quot;OK : %s --&gt; %s%s&quot; % (locale, c1, c2))</span>
<span class="k">except</span> <span class="ne">KeyError</span> <span class="k">as</span> <span class="n">exc</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;ERROR: </span><span class="si">%s</span><span class="s2"> --&gt; </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">locale</span><span class="p">,</span> <span class="n">exc</span><span class="p">))</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">return</span> <span class="n">c1</span> <span class="o">+</span> <span class="n">c2</span></div>
<span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s2">&quot;__main__&quot;</span><span class="p">:</span>
<span class="n">main</span><span class="p">()</span>
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