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  1. <!DOCTYPE html>
    2. 

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    8. 

  8.     <title>searx.plugins._core &#8212; SearXNG Documentation (2025.4.30+fd33559cf)</title>
    9. 

  9.     <link rel="stylesheet" type="text/css" href="../../../_static/pygments.css?v=6625fa76" />
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  19.       <h3>Navigation</h3>
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  22.           <a href="../../../genindex.html" title="General Index"
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  23.              accesskey="I">index</a></li>
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  25.           <a href="../../../py-modindex.html" title="Python Module Index"
    26. 

  26.              >modules</a> |</li>
    27. 

  27.         <li class="nav-item nav-item-0"><a href="../../../index.html">SearXNG Documentation (2025.4.30+fd33559cf)</a> &#187;</li>
    28. 

  28.           <li class="nav-item nav-item-1"><a href="../../index.html" accesskey="U">Module code</a> &#187;</li>
    29. 

  29.         <li class="nav-item nav-item-this"><a href="">searx.plugins._core</a></li> 
    30. 

  30.       </ul>
    31. 

  31.     </div>  
    32. 

  32. 

  33.     <div class="document">
    34. 

  34.       <div class="documentwrapper">
    35. 

  35.         <div class="bodywrapper">
    36. 

  36.           <div class="body" role="main">
    37. 

  37.             
    38. 

  38.   <h1>Source code for searx.plugins._core</h1><div class="highlight"><pre>
    39. 

  39. <span></span><span class="c1"># SPDX-License-Identifier: AGPL-3.0-or-later</span>
    40. 

  40. <span class="c1"># pylint: disable=too-few-public-methods,missing-module-docstring</span>
    41. 

  41. 

  42. <span class="kn">from</span><span class="w"> </span><span class="nn">__future__</span><span class="w"> </span><span class="kn">import</span> <span class="n">annotations</span>
    43. 

  43. 

  44. <span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s2">&quot;PluginInfo&quot;</span><span class="p">,</span> <span class="s2">&quot;Plugin&quot;</span><span class="p">,</span> <span class="s2">&quot;PluginCfg&quot;</span><span class="p">,</span> <span class="s2">&quot;PluginStorage&quot;</span><span class="p">]</span>
    45. 

  45. 

  46. <span class="kn">import</span><span class="w"> </span><span class="nn">abc</span>
    47. 

  47. <span class="kn">import</span><span class="w"> </span><span class="nn">importlib</span>
    48. 

  48. <span class="kn">import</span><span class="w"> </span><span class="nn">inspect</span>
    49. 

  49. <span class="kn">import</span><span class="w"> </span><span class="nn">logging</span>
    50. 

  50. <span class="kn">import</span><span class="w"> </span><span class="nn">re</span>
    51. 

  51. <span class="kn">import</span><span class="w"> </span><span class="nn">typing</span>
    52. 

  52. 

  53. <span class="kn">from</span><span class="w"> </span><span class="nn">dataclasses</span><span class="w"> </span><span class="kn">import</span> <span class="n">dataclass</span><span class="p">,</span> <span class="n">field</span>
    54. 

  54. 

  55. <span class="kn">from</span><span class="w"> </span><span class="nn">searx.extended_types</span><span class="w"> </span><span class="kn">import</span> <span class="n">SXNG_Request</span>
    56. 

  56. <span class="kn">from</span><span class="w"> </span><span class="nn">searx.result_types</span><span class="w"> </span><span class="kn">import</span> <span class="n">Result</span>
    57. 

  57. 

  58. <span class="k">if</span> <span class="n">typing</span><span class="o">.</span><span class="n">TYPE_CHECKING</span><span class="p">:</span>
    59. 

  59.     <span class="kn">from</span><span class="w"> </span><span class="nn">searx.search</span><span class="w"> </span><span class="kn">import</span> <span class="n">SearchWithPlugins</span>
    60. 

  60.     <span class="kn">import</span><span class="w"> </span><span class="nn">flask</span>
    61. 

  61. 

  62. <span class="n">log</span><span class="p">:</span> <span class="n">logging</span><span class="o">.</span><span class="n">Logger</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="s2">&quot;searx.plugins&quot;</span><span class="p">)</span>
    63. 

  63. 

  64. 

  65. <div class="viewcode-block" id="PluginInfo">
    66. 

  66. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.PluginInfo">[docs]</a>
    67. 

  67. <span class="nd">@dataclass</span>
    68. 

  68. <span class="k">class</span><span class="w"> </span><span class="nc">PluginInfo</span><span class="p">:</span>
    69. 

  69. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Object that holds informations about a *plugin*, these infos are shown to</span>
    70. 

  70. <span class="sd">    the user in the Preferences menu.</span>
    71. 

  71. 

  72. <span class="sd">    To be able to translate the information into other languages, the text must</span>
    73. 

  73. <span class="sd">    be written in English and translated with :py:obj:`flask_babel.gettext`.</span>
    74. 

  74. <span class="sd">    &quot;&quot;&quot;</span>
    75. 

  75. 

  76.     <span class="nb">id</span><span class="p">:</span> <span class="nb">str</span>
    77. 

  77. <span class="w">    </span><span class="sd">&quot;&quot;&quot;The ID-selector in HTML/CSS `#&lt;id&gt;`.&quot;&quot;&quot;</span>
    78. 

  78. 

  79.     <span class="n">name</span><span class="p">:</span> <span class="nb">str</span>
    80. 

  80. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Name of the *plugin*.&quot;&quot;&quot;</span>
    81. 

  81. 

  82.     <span class="n">description</span><span class="p">:</span> <span class="nb">str</span>
    83. 

  83. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Short description of the *answerer*.&quot;&quot;&quot;</span>
    84. 

  84. 

  85.     <span class="n">preference_section</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">Literal</span><span class="p">[</span><span class="s2">&quot;general&quot;</span><span class="p">,</span> <span class="s2">&quot;ui&quot;</span><span class="p">,</span> <span class="s2">&quot;privacy&quot;</span><span class="p">,</span> <span class="s2">&quot;query&quot;</span><span class="p">]</span> <span class="o">|</span> <span class="kc">None</span> <span class="o">=</span> <span class="s2">&quot;general&quot;</span>
    86. 

  86. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Section (tab/group) in the preferences where this plugin is shown to the</span>
    87. 

  87. <span class="sd">    user.</span>
    88. 

  88. 

  89. <span class="sd">    The value ``query`` is reserved for plugins that are activated via a</span>
    90. 

  90. <span class="sd">    *keyword* as part of a search query, see:</span>
    91. 

  91. 

  92. <span class="sd">    - :py:obj:`PluginInfo.examples`</span>
    93. 

  93. <span class="sd">    - :py:obj:`Plugin.keywords`</span>
    94. 

  94. 

  95. <span class="sd">    Those plugins are shown in the preferences in tab *Special Queries*.</span>
    96. 

  96. <span class="sd">    &quot;&quot;&quot;</span>
    97. 

  97. 

  98.     <span class="n">examples</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="n">field</span><span class="p">(</span><span class="n">default_factory</span><span class="o">=</span><span class="nb">list</span><span class="p">)</span>
    99. 

  99. <span class="w">    </span><span class="sd">&quot;&quot;&quot;List of short examples of the usage / of query terms.&quot;&quot;&quot;</span>
    100. 

  100. 

  101.     <span class="n">keywords</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="n">field</span><span class="p">(</span><span class="n">default_factory</span><span class="o">=</span><span class="nb">list</span><span class="p">)</span>
    102. 

  102. <span class="w">    </span><span class="sd">&quot;&quot;&quot;See :py:obj:`Plugin.keywords`&quot;&quot;&quot;</span></div>
    103. 

  103. 

  104. 

  105. 

  106. <span class="n">ID_REGXP</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="s2">&quot;[a-z][a-z0-9].*&quot;</span><span class="p">)</span>
    107. 

  107. 

  108. 

  109. <div class="viewcode-block" id="Plugin">
    110. 

  110. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.Plugin">[docs]</a>
    111. 

  111. <span class="k">class</span><span class="w"> </span><span class="nc">Plugin</span><span class="p">(</span><span class="n">abc</span><span class="o">.</span><span class="n">ABC</span><span class="p">):</span>
    112. 

  112. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Abstract base class of all Plugins.&quot;&quot;&quot;</span>
    113. 

  113. 

  114.     <span class="nb">id</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
    115. 

  115. <span class="w">    </span><span class="sd">&quot;&quot;&quot;The ID (suffix) in the HTML form.&quot;&quot;&quot;</span>
    116. 

  116. 

  117.     <span class="n">active</span><span class="p">:</span> <span class="n">typing</span><span class="o">.</span><span class="n">ClassVar</span><span class="p">[</span><span class="nb">bool</span><span class="p">]</span>
    118. 

  118. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Plugin is enabled/disabled by default (:py:obj:`PluginCfg.active`).&quot;&quot;&quot;</span>
    119. 

  119. 

  120.     <span class="n">keywords</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
    121. 

  121. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Keywords in the search query that activate the plugin.  The *keyword* is</span>
    122. 

  122. <span class="sd">    the first word in a search query.  If a plugin should be executed regardless</span>
    123. 

  123. <span class="sd">    of the search query, the list of keywords should be empty (which is also the</span>
    124. 

  124. <span class="sd">    default in the base class for Plugins).&quot;&quot;&quot;</span>
    125. 

  125. 

  126.     <span class="n">log</span><span class="p">:</span> <span class="n">logging</span><span class="o">.</span><span class="n">Logger</span>
    127. 

  127. <span class="w">    </span><span class="sd">&quot;&quot;&quot;A logger object, is automatically initialized when calling the</span>
    128. 

  128. <span class="sd">    constructor (if not already set in the subclass).&quot;&quot;&quot;</span>
    129. 

  129. 

  130.     <span class="n">info</span><span class="p">:</span> <span class="n">PluginInfo</span>
    131. 

  131. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Informations about the *plugin*, see :py:obj:`PluginInfo`.&quot;&quot;&quot;</span>
    132. 

  132. 

  133.     <span class="n">fqn</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
    134. 

  134. 

  135.     <span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">plg_cfg</span><span class="p">:</span> <span class="n">PluginCfg</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
    136. 

  136.         <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
    137. 

  137.         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">fqn</span><span class="p">:</span>
    138. 

  138.             <span class="bp">self</span><span class="o">.</span><span class="n">fqn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__mro__</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="vm">__module__</span>
    139. 

  139. 

  140.         <span class="c1"># names from the configuration</span>
    141. 

  141.         <span class="k">for</span> <span class="n">n</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">plg_cfg</span><span class="o">.</span><span class="vm">__dict__</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
    142. 

  142.             <span class="nb">setattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">n</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
    143. 

  143. 

  144.         <span class="c1"># names that must be set by the plugin implementation</span>
    145. 

  145.         <span class="k">for</span> <span class="n">attr</span> <span class="ow">in</span> <span class="p">[</span>
    146. 

  146.             <span class="s2">&quot;id&quot;</span><span class="p">,</span>
    147. 

  147.         <span class="p">]:</span>
    148. 

  148.             <span class="k">if</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">attr</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
    149. 

  149.                 <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;plugin </span><span class="si">{</span><span class="bp">self</span><span class="si">}</span><span class="s2"> is missing attribute </span><span class="si">{</span><span class="n">attr</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
    150. 

  150. 

  151.         <span class="k">if</span> <span class="ow">not</span> <span class="n">ID_REGXP</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="p">):</span>
    152. 

  152.             <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;plugin ID </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2"> contains invalid character (use lowercase ASCII)&quot;</span><span class="p">)</span>
    153. 

  153. 

  154.         <span class="k">if</span> <span class="ow">not</span> <span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="s2">&quot;log&quot;</span><span class="p">,</span> <span class="kc">None</span><span class="p">):</span>
    155. 

  155.             <span class="n">pkg_name</span> <span class="o">=</span> <span class="n">inspect</span><span class="o">.</span><span class="n">getmodule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span><span class="o">.</span><span class="n">__package__</span>  <span class="c1"># type: ignore</span>
    156. 

  156.             <span class="bp">self</span><span class="o">.</span><span class="n">log</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">pkg_name</span><span class="si">}</span><span class="s2">.</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
    157. 

  157. 

  158.     <span class="k">def</span><span class="w"> </span><span class="fm">__hash__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">int</span><span class="p">:</span>
    159. 

  159. <span class="w">        </span><span class="sd">&quot;&quot;&quot;The hash value is used in :py:obj:`set`, for example, when an object</span>
    160. 

  160. <span class="sd">        is added to the set.  The hash value is also used in other contexts,</span>
    161. 

  161. <span class="sd">        e.g. when checking for equality to identify identical plugins from</span>
    162. 

  162. <span class="sd">        different sources (name collisions).&quot;&quot;&quot;</span>
    163. 

  163. 

  164.         <span class="k">return</span> <span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
    165. 

  165. 

  166.     <span class="k">def</span><span class="w"> </span><span class="fm">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
    167. 

  167. <span class="w">        </span><span class="sd">&quot;&quot;&quot;py:obj:`Plugin` objects are equal if the hash values of the two</span>
    168. 

  168. <span class="sd">        objects are equal.&quot;&quot;&quot;</span>
    169. 

  169. 

  170.         <span class="k">return</span> <span class="nb">hash</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">==</span> <span class="nb">hash</span><span class="p">(</span><span class="n">other</span><span class="p">)</span>
    171. 

  171. 

  172. <div class="viewcode-block" id="Plugin.init">
    173. 

  173. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.Plugin.init">[docs]</a>
    174. 

  174.     <span class="k">def</span><span class="w"> </span><span class="nf">init</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">app</span><span class="p">:</span> <span class="s2">&quot;flask.Flask&quot;</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">bool</span><span class="p">:</span>  <span class="c1"># pylint: disable=unused-argument</span>
    175. 

  175. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Initialization of the plugin, the return value decides whether this</span>
    176. 

  176. <span class="sd">        plugin is active or not.  Initialization only takes place once, at the</span>
    177. 

  177. <span class="sd">        time the WEB application is set up.  The base methode always returns</span>
    178. 

  178. <span class="sd">        ``True``, the methode can be overwritten in the inheritances,</span>
    179. 

  179. 

  180. <span class="sd">        - ``True`` plugin is active</span>
    181. 

  181. <span class="sd">        - ``False`` plugin is inactive</span>
    182. 

  182. <span class="sd">        &quot;&quot;&quot;</span>
    183. 

  183.         <span class="k">return</span> <span class="kc">True</span></div>
    184. 

  184. 

  185. 

  186.     <span class="c1"># pylint: disable=unused-argument</span>
    187. 

  187. <div class="viewcode-block" id="Plugin.pre_search">
    188. 

  188. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.Plugin.pre_search">[docs]</a>
    189. 

  189.     <span class="k">def</span><span class="w"> </span><span class="nf">pre_search</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">:</span> <span class="n">SXNG_Request</span><span class="p">,</span> <span class="n">search</span><span class="p">:</span> <span class="s2">&quot;SearchWithPlugins&quot;</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">bool</span><span class="p">:</span>
    190. 

  190. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Runs BEFORE the search request and returns a boolean:</span>
    191. 

  191. 

  192. <span class="sd">        - ``True`` to continue the search</span>
    193. 

  193. <span class="sd">        - ``False`` to stop the search</span>
    194. 

  194. <span class="sd">        &quot;&quot;&quot;</span>
    195. 

  195.         <span class="k">return</span> <span class="kc">True</span></div>
    196. 

  196. 

  197. 

  198. <div class="viewcode-block" id="Plugin.on_result">
    199. 

  199. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.Plugin.on_result">[docs]</a>
    200. 

  200.     <span class="k">def</span><span class="w"> </span><span class="nf">on_result</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">:</span> <span class="n">SXNG_Request</span><span class="p">,</span> <span class="n">search</span><span class="p">:</span> <span class="s2">&quot;SearchWithPlugins&quot;</span><span class="p">,</span> <span class="n">result</span><span class="p">:</span> <span class="n">Result</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">bool</span><span class="p">:</span>
    201. 

  201. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Runs for each result of each engine and returns a boolean:</span>
    202. 

  202. 

  203. <span class="sd">        - ``True`` to keep the result</span>
    204. 

  204. <span class="sd">        - ``False`` to remove the result from the result list</span>
    205. 

  205. 

  206. <span class="sd">        The ``result`` can be modified to the needs.</span>
    207. 

  207. 

  208. <span class="sd">        .. hint::</span>
    209. 

  209. 

  210. <span class="sd">           If :py:obj:`Result.url &lt;searx.result_types._base.Result.url&gt;` is modified,</span>
    211. 

  211. <span class="sd">           :py:obj:`Result.parsed_url &lt;searx.result_types._base.Result.parsed_url&gt;` must</span>
    212. 

  212. <span class="sd">           be changed accordingly:</span>
    213. 

  213. 

  214. <span class="sd">           .. code:: python</span>
    215. 

  215. 

  216. <span class="sd">              result[&quot;parsed_url&quot;] = urlparse(result[&quot;url&quot;])</span>
    217. 

  217. <span class="sd">        &quot;&quot;&quot;</span>
    218. 

  218.         <span class="k">return</span> <span class="kc">True</span></div>
    219. 

  219. 

  220. 

  221. <div class="viewcode-block" id="Plugin.post_search">
    222. 

  222. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.Plugin.post_search">[docs]</a>
    223. 

  223.     <span class="k">def</span><span class="w"> </span><span class="nf">post_search</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">:</span> <span class="n">SXNG_Request</span><span class="p">,</span> <span class="n">search</span><span class="p">:</span> <span class="s2">&quot;SearchWithPlugins&quot;</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span> <span class="o">|</span> <span class="n">typing</span><span class="o">.</span><span class="n">Sequence</span><span class="p">[</span><span class="n">Result</span><span class="p">]:</span>
    224. 

  224. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Runs AFTER the search request.  Can return a list of</span>
    225. 

  225. <span class="sd">        :py:obj:`Result &lt;searx.result_types._base.Result&gt;` objects to be added to the</span>
    226. 

  226. <span class="sd">        final result list.&quot;&quot;&quot;</span>
    227. 

  227.         <span class="k">return</span></div>
    228. 

  228. </div>
    229. 

  229. 

  230. 

  231. 

  232. <div class="viewcode-block" id="PluginCfg">
    233. 

  233. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.PluginCfg">[docs]</a>
    234. 

  234. <span class="nd">@dataclass</span>
    235. 

  235. <span class="k">class</span><span class="w"> </span><span class="nc">PluginCfg</span><span class="p">:</span>
    236. 

  236. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Settings of a plugin.</span>
    237. 

  237. 

  238. <span class="sd">    .. code:: yaml</span>
    239. 

  239. 

  240. <span class="sd">       mypackage.mymodule.MyPlugin:</span>
    241. 

  241. <span class="sd">         active: true</span>
    242. 

  242. <span class="sd">    &quot;&quot;&quot;</span>
    243. 

  243. 

  244.     <span class="n">active</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>
    245. 

  245. <span class="w">    </span><span class="sd">&quot;&quot;&quot;Plugin is active by default and the user can *opt-out* in the preferences.&quot;&quot;&quot;</span></div>
    246. 

  246. 

  247. 

  248. 

  249. <div class="viewcode-block" id="PluginStorage">
    250. 

  250. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.PluginStorage">[docs]</a>
    251. 

  251. <span class="k">class</span><span class="w"> </span><span class="nc">PluginStorage</span><span class="p">:</span>
    252. 

  252. <span class="w">    </span><span class="sd">&quot;&quot;&quot;A storage for managing the *plugins* of SearXNG.&quot;&quot;&quot;</span>
    253. 

  253. 

  254.     <span class="n">plugin_list</span><span class="p">:</span> <span class="nb">set</span><span class="p">[</span><span class="n">Plugin</span><span class="p">]</span>
    255. 

  255. <span class="w">    </span><span class="sd">&quot;&quot;&quot;The list of :py:obj:`Plugins` in this storage.&quot;&quot;&quot;</span>
    256. 

  256. 

  257.     <span class="k">def</span><span class="w"> </span><span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
    258. 

  258.         <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
    259. 

  259. 

  260.     <span class="k">def</span><span class="w"> </span><span class="fm">__iter__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
    261. 

  261.         <span class="k">yield from</span> <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span>
    262. 

  262. 

  263.     <span class="k">def</span><span class="w"> </span><span class="fm">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
    264. 

  264.         <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span><span class="p">)</span>
    265. 

  265. 

  266.     <span class="nd">@property</span>
    267. 

  267.     <span class="k">def</span><span class="w"> </span><span class="nf">info</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">list</span><span class="p">[</span><span class="n">PluginInfo</span><span class="p">]:</span>
    268. 

  268. 

  269.         <span class="k">return</span> <span class="p">[</span><span class="n">p</span><span class="o">.</span><span class="n">info</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span><span class="p">]</span>
    270. 

  270. 

  271. <div class="viewcode-block" id="PluginStorage.load_settings">
    272. 

  272. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.PluginStorage.load_settings">[docs]</a>
    273. 

  273.     <span class="k">def</span><span class="w"> </span><span class="nf">load_settings</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cfg</span><span class="p">:</span> <span class="nb">dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="nb">dict</span><span class="p">]):</span>
    274. 

  274. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Load plugins configured in SearXNG&#39;s settings :ref:`settings</span>
    275. 

  275. <span class="sd">        plugins`.&quot;&quot;&quot;</span>
    276. 

  276. 

  277.         <span class="k">for</span> <span class="n">fqn</span><span class="p">,</span> <span class="n">plg_settings</span> <span class="ow">in</span> <span class="n">cfg</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
    278. 

  278.             <span class="bp">cls</span> <span class="o">=</span> <span class="kc">None</span>
    279. 

  279.             <span class="n">mod_name</span><span class="p">,</span> <span class="n">cls_name</span> <span class="o">=</span> <span class="n">fqn</span><span class="o">.</span><span class="n">rsplit</span><span class="p">(</span><span class="s1">&#39;.&#39;</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
    280. 

  280.             <span class="k">try</span><span class="p">:</span>
    281. 

  281.                 <span class="n">mod</span> <span class="o">=</span> <span class="n">importlib</span><span class="o">.</span><span class="n">import_module</span><span class="p">(</span><span class="n">mod_name</span><span class="p">)</span>
    282. 

  282.                 <span class="bp">cls</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">cls_name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
    283. 

  283.             <span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">exc</span><span class="p">:</span>  <span class="c1"># pylint: disable=broad-exception-caught</span>
    284. 

  284.                 <span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="n">exc</span><span class="p">)</span>
    285. 

  285. 

  286.             <span class="k">if</span> <span class="bp">cls</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
    287. 

  287.                 <span class="n">msg</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;plugin </span><span class="si">{</span><span class="n">fqn</span><span class="si">}</span><span class="s2"> is not implemented&quot;</span>
    288. 

  288.                 <span class="k">raise</span> <span class="ne">ValueError</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
    289. 

  289.             <span class="n">plg</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">(</span><span class="n">PluginCfg</span><span class="p">(</span><span class="o">**</span><span class="n">plg_settings</span><span class="p">))</span>
    290. 

  290.             <span class="bp">self</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="n">plg</span><span class="p">)</span></div>
    291. 

  291. 

  292. 

  293. <div class="viewcode-block" id="PluginStorage.register">
    294. 

  294. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.PluginStorage.register">[docs]</a>
    295. 

  295.     <span class="k">def</span><span class="w"> </span><span class="nf">register</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">plugin</span><span class="p">:</span> <span class="n">Plugin</span><span class="p">):</span>
    296. 

  296. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Register a :py:obj:`Plugin`.  In case of name collision (if two</span>
    297. 

  297. <span class="sd">        plugins have same ID) a :py:obj:`KeyError` exception is raised.</span>
    298. 

  298. <span class="sd">        &quot;&quot;&quot;</span>
    299. 

  299. 

  300.         <span class="k">if</span> <span class="n">plugin</span> <span class="ow">in</span> <span class="p">[</span><span class="n">p</span><span class="o">.</span><span class="n">id</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span><span class="p">]:</span>
    301. 

  301.             <span class="n">msg</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;name collision &#39;</span><span class="si">{</span><span class="n">plugin</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&#39;&quot;</span>
    302. 

  302.             <span class="n">plugin</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">critical</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
    303. 

  303.             <span class="k">raise</span> <span class="ne">KeyError</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
    304. 

  304. 

  305.         <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">plugin</span><span class="p">)</span>
    306. 

  306.         <span class="n">plugin</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;plugin has been loaded&quot;</span><span class="p">)</span></div>
    307. 

  307. 

  308. 

  309. <div class="viewcode-block" id="PluginStorage.init">
    310. 

  310. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.PluginStorage.init">[docs]</a>
    311. 

  311.     <span class="k">def</span><span class="w"> </span><span class="nf">init</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">app</span><span class="p">:</span> <span class="s2">&quot;flask.Flask&quot;</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
    312. 

  312. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Calls the method :py:obj:`Plugin.init` of each plugin in this</span>
    313. 

  313. <span class="sd">        storage.  Depending on its return value, the plugin is removed from</span>
    314. 

  314. <span class="sd">        *this* storage or not.&quot;&quot;&quot;</span>
    315. 

  315. 

  316.         <span class="k">for</span> <span class="n">plg</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span><span class="o">.</span><span class="n">copy</span><span class="p">():</span>
    317. 

  317.             <span class="k">if</span> <span class="ow">not</span> <span class="n">plg</span><span class="o">.</span><span class="n">init</span><span class="p">(</span><span class="n">app</span><span class="p">):</span>
    318. 

  318.                 <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">plg</span><span class="p">)</span></div>
    319. 

  319. 

  320. 

  321.     <span class="k">def</span><span class="w"> </span><span class="nf">pre_search</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">:</span> <span class="n">SXNG_Request</span><span class="p">,</span> <span class="n">search</span><span class="p">:</span> <span class="s2">&quot;SearchWithPlugins&quot;</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">bool</span><span class="p">:</span>
    322. 

  322. 

  323.         <span class="n">ret</span> <span class="o">=</span> <span class="kc">True</span>
    324. 

  324.         <span class="k">for</span> <span class="n">plugin</span> <span class="ow">in</span> <span class="p">[</span><span class="n">p</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span> <span class="k">if</span> <span class="n">p</span><span class="o">.</span><span class="n">id</span> <span class="ow">in</span> <span class="n">search</span><span class="o">.</span><span class="n">user_plugins</span><span class="p">]:</span>
    325. 

  325.             <span class="k">try</span><span class="p">:</span>
    326. 

  326.                 <span class="n">ret</span> <span class="o">=</span> <span class="nb">bool</span><span class="p">(</span><span class="n">plugin</span><span class="o">.</span><span class="n">pre_search</span><span class="p">(</span><span class="n">request</span><span class="o">=</span><span class="n">request</span><span class="p">,</span> <span class="n">search</span><span class="o">=</span><span class="n">search</span><span class="p">))</span>
    327. 

  327.             <span class="k">except</span> <span class="ne">Exception</span><span class="p">:</span>  <span class="c1"># pylint: disable=broad-except</span>
    328. 

  328.                 <span class="n">plugin</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="s2">&quot;Exception while calling pre_search&quot;</span><span class="p">)</span>
    329. 

  329.                 <span class="k">continue</span>
    330. 

  330.             <span class="k">if</span> <span class="ow">not</span> <span class="n">ret</span><span class="p">:</span>
    331. 

  331.                 <span class="c1"># skip this search on the first False from a plugin</span>
    332. 

  332.                 <span class="k">break</span>
    333. 

  333.         <span class="k">return</span> <span class="n">ret</span>
    334. 

  334. 

  335.     <span class="k">def</span><span class="w"> </span><span class="nf">on_result</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">:</span> <span class="n">SXNG_Request</span><span class="p">,</span> <span class="n">search</span><span class="p">:</span> <span class="s2">&quot;SearchWithPlugins&quot;</span><span class="p">,</span> <span class="n">result</span><span class="p">:</span> <span class="n">Result</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">bool</span><span class="p">:</span>
    336. 

  336. 

  337.         <span class="n">ret</span> <span class="o">=</span> <span class="kc">True</span>
    338. 

  338.         <span class="k">for</span> <span class="n">plugin</span> <span class="ow">in</span> <span class="p">[</span><span class="n">p</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span> <span class="k">if</span> <span class="n">p</span><span class="o">.</span><span class="n">id</span> <span class="ow">in</span> <span class="n">search</span><span class="o">.</span><span class="n">user_plugins</span><span class="p">]:</span>
    339. 

  339.             <span class="k">try</span><span class="p">:</span>
    340. 

  340.                 <span class="n">ret</span> <span class="o">=</span> <span class="nb">bool</span><span class="p">(</span><span class="n">plugin</span><span class="o">.</span><span class="n">on_result</span><span class="p">(</span><span class="n">request</span><span class="o">=</span><span class="n">request</span><span class="p">,</span> <span class="n">search</span><span class="o">=</span><span class="n">search</span><span class="p">,</span> <span class="n">result</span><span class="o">=</span><span class="n">result</span><span class="p">))</span>
    341. 

  341.             <span class="k">except</span> <span class="ne">Exception</span><span class="p">:</span>  <span class="c1"># pylint: disable=broad-except</span>
    342. 

  342.                 <span class="n">plugin</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="s2">&quot;Exception while calling on_result&quot;</span><span class="p">)</span>
    343. 

  343.                 <span class="k">continue</span>
    344. 

  344.             <span class="k">if</span> <span class="ow">not</span> <span class="n">ret</span><span class="p">:</span>
    345. 

  345.                 <span class="c1"># ignore this result item on the first False from a plugin</span>
    346. 

  346.                 <span class="k">break</span>
    347. 

  347. 

  348.         <span class="k">return</span> <span class="n">ret</span>
    349. 

  349. 

  350. <div class="viewcode-block" id="PluginStorage.post_search">
    351. 

  351. <a class="viewcode-back" href="../../../dev/plugins/development.html#searx.plugins.PluginStorage.post_search">[docs]</a>
    352. 

  352.     <span class="k">def</span><span class="w"> </span><span class="nf">post_search</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">request</span><span class="p">:</span> <span class="n">SXNG_Request</span><span class="p">,</span> <span class="n">search</span><span class="p">:</span> <span class="s2">&quot;SearchWithPlugins&quot;</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
    353. 

  353. <span class="w">        </span><span class="sd">&quot;&quot;&quot;Extend :py:obj:`search.result_container</span>
    354. 

  354. <span class="sd">        &lt;searx.results.ResultContainer`&gt; with result items from plugins listed</span>
    355. 

  355. <span class="sd">        in :py:obj:`search.user_plugins &lt;SearchWithPlugins.user_plugins&gt;`.</span>
    356. 

  356. <span class="sd">        &quot;&quot;&quot;</span>
    357. 

  357. 

  358.         <span class="n">keyword</span> <span class="o">=</span> <span class="kc">None</span>
    359. 

  359.         <span class="k">for</span> <span class="n">keyword</span> <span class="ow">in</span> <span class="n">search</span><span class="o">.</span><span class="n">search_query</span><span class="o">.</span><span class="n">query</span><span class="o">.</span><span class="n">split</span><span class="p">():</span>
    360. 

  360.             <span class="k">if</span> <span class="n">keyword</span><span class="p">:</span>
    361. 

  361.                 <span class="k">break</span>
    362. 

  362. 

  363.         <span class="k">for</span> <span class="n">plugin</span> <span class="ow">in</span> <span class="p">[</span><span class="n">p</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">plugin_list</span> <span class="k">if</span> <span class="n">p</span><span class="o">.</span><span class="n">id</span> <span class="ow">in</span> <span class="n">search</span><span class="o">.</span><span class="n">user_plugins</span><span class="p">]:</span>
    364. 

  364. 

  365.             <span class="k">if</span> <span class="n">plugin</span><span class="o">.</span><span class="n">keywords</span><span class="p">:</span>
    366. 

  366.                 <span class="c1"># plugin with keywords: skip plugin if no keyword match</span>
    367. 

  367.                 <span class="k">if</span> <span class="n">keyword</span> <span class="ow">and</span> <span class="n">keyword</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">plugin</span><span class="o">.</span><span class="n">keywords</span><span class="p">:</span>
    368. 

  368.                     <span class="k">continue</span>
    369. 

  369.             <span class="k">try</span><span class="p">:</span>
    370. 

  370.                 <span class="n">results</span> <span class="o">=</span> <span class="n">plugin</span><span class="o">.</span><span class="n">post_search</span><span class="p">(</span><span class="n">request</span><span class="o">=</span><span class="n">request</span><span class="p">,</span> <span class="n">search</span><span class="o">=</span><span class="n">search</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]</span>
    371. 

  371.             <span class="k">except</span> <span class="ne">Exception</span><span class="p">:</span>  <span class="c1"># pylint: disable=broad-except</span>
    372. 

  372.                 <span class="n">plugin</span><span class="o">.</span><span class="n">log</span><span class="o">.</span><span class="n">exception</span><span class="p">(</span><span class="s2">&quot;Exception while calling post_search&quot;</span><span class="p">)</span>
    373. 

  373.                 <span class="k">continue</span>
    374. 

  374. 

  375.             <span class="c1"># In case of *plugins* prefix ``plugin:`` is set, see searx.result_types.Result</span>
    376. 

  376.             <span class="n">search</span><span class="o">.</span><span class="n">result_container</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;plugin: </span><span class="si">{</span><span class="n">plugin</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">results</span><span class="p">)</span></div>
    377. 

  377. </div>
    378. 

  378. 

  379. </pre></div>
    380. 

  380. 

  381.             <div class="clearer"></div>
    382. 

  382.           </div>
    383. 

  383.         </div>
    384. 

  384.       </div>
    385. 

  385.   <span id="sidebar-top"></span>
    386. 

  386.       <div class="sphinxsidebar" role="navigation" aria-label="Main">
    387. 

  387.         <div class="sphinxsidebarwrapper">
    388. 

  388.   
    389. 

  389.     
    390. 

  390.             <p class="logo"><a href="../../../index.html">
    391. 

  391.               <img class="logo" src="../../../_static/searxng-wordmark.svg" alt="Logo of SearXNG"/>
    392. 

  392.             </a></p>
    393. 

  393.   
    394. 

  394. 

  395. <h3><a href="../../../index.html">Table of Contents</a></h3>
    396. 

  396. <ul>
    397. 

  397. <li class="toctree-l1"><a class="reference internal" href="../../../user/index.html">User information</a></li>
    398. 

  398. <li class="toctree-l1"><a class="reference internal" href="../../../own-instance.html">Why use a private instance?</a></li>
    399. 

  399. <li class="toctree-l1"><a class="reference internal" href="../../../admin/index.html">Administrator documentation</a></li>
    400. 

  400. <li class="toctree-l1"><a class="reference internal" href="../../../dev/index.html">Developer documentation</a></li>
    401. 

  401. <li class="toctree-l1"><a class="reference internal" href="../../../utils/index.html">DevOps tooling box</a></li>
    402. 

  402. <li class="toctree-l1"><a class="reference internal" href="../../../src/index.html">Source-Code</a></li>
    403. 

  403. </ul>
    404. 

  404. 

  405.   <h3>Project Links</h3>
    406. 

  406.   <ul>
    407. 

  407.     <li><a href="https://github.com/searxng/searxng/tree/master">Source</a>
    408. 

  408.   
    409. 

  409.     <li><a href="https://github.com/searxng/searxng/wiki">Wiki</a>
    410. 

  410.   
    411. 

  411.     <li><a href="https://searx.space">Public instances</a>
    412. 

  412.   
    413. 

  413.     <li><a href="https://github.com/searxng/searxng/issues">Issue Tracker</a>
    414. 

  414.   </ul><h3>Navigation</h3>
    415. 

  415. <ul>
    416. 

  416.   <li><a href="../../../index.html">Overview</a>
    417. 

  417.     <ul>
    418. 

  418.       <li><a href="../../index.html">Module code</a>
    419. 

  419.         
    420. 

  420.           
    421. 

  421.           </ul>
    422. 

  422.       </li>
    423. 

  423.     </ul>
    424. 

  424.   </li>
    425. 

  425. </ul>
    426. 

  426. <search id="searchbox" style="display: none" role="search">
    427. 

  427.   <h3 id="searchlabel">Quick search</h3>
    428. 

  428.     <div class="searchformwrapper">
    429. 

  429.     <form class="search" action="../../../search.html" method="get">
    430. 

  430.       <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/>
    431. 

  431.       <input type="submit" value="Go" />
    432. 

  432.     </form>
    433. 

  433.     </div>
    434. 

  434. </search>
    435. 

  435. <script>document.getElementById('searchbox').style.display = "block"</script>
    436. 

  436.         </div>
    437. 

  437.       </div>
    438. 

  438.       <div class="clearer"></div>
    439. 

  439.     </div>
    440. 

  440.     <div class="footer" role="contentinfo">
    441. 

  441.     &#169; Copyright SearXNG team.
    442. 

  442.     </div>
    443. 

  443.   </body>
    444. 

  444. </html>
    445.
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