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<h1>Source code for searx.engines.demo_online</h1><div class="highlight"><pre>
<span></span><span class="c1"># SPDX-License-Identifier: AGPL-3.0-or-later</span>
<span class="sd">"""Within this module we implement a *demo online engine*. Do not look to</span>
<span class="sd">close to the implementation, its just a simple example which queries `The Art</span>
<span class="sd">Institute of Chicago <https://www.artic.edu>`_</span>
<span class="sd">To get in use of this *demo* engine add the following entry to your engines</span>
<span class="sd">list in ``settings.yml``:</span>
<span class="sd">.. code:: yaml</span>
<span class="sd"> - name: my online engine</span>
<span class="sd"> engine: demo_online</span>
<span class="sd"> shortcut: demo</span>
<span class="sd"> disabled: false</span>
<span class="sd">"""</span>
<span class="kn">from</span> <span class="nn">json</span> <span class="kn">import</span> <span class="n">loads</span>
<span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlencode</span>
<span class="n">engine_type</span> <span class="o">=</span> <span class="s1">'online'</span>
<span class="n">send_accept_language_header</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">categories</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'general'</span><span class="p">]</span>
<span class="n">disabled</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">timeout</span> <span class="o">=</span> <span class="mf">2.0</span>
<span class="n">categories</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'images'</span><span class="p">]</span>
<span class="n">paging</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">page_size</span> <span class="o">=</span> <span class="mi">20</span>
<span class="n">search_api</span> <span class="o">=</span> <span class="s1">'https://api.artic.edu/api/v1/artworks/search?'</span>
<span class="n">image_api</span> <span class="o">=</span> <span class="s1">'https://www.artic.edu/iiif/2/'</span>
<span class="n">about</span> <span class="o">=</span> <span class="p">{</span>
<span class="s2">"website"</span><span class="p">:</span> <span class="s1">'https://www.artic.edu'</span><span class="p">,</span>
<span class="s2">"wikidata_id"</span><span class="p">:</span> <span class="s1">'Q239303'</span><span class="p">,</span>
<span class="s2">"official_api_documentation"</span><span class="p">:</span> <span class="s1">'http://api.artic.edu/docs/'</span><span class="p">,</span>
<span class="s2">"use_official_api"</span><span class="p">:</span> <span class="kc">True</span><span class="p">,</span>
<span class="s2">"require_api_key"</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
<span class="s2">"results"</span><span class="p">:</span> <span class="s1">'JSON'</span><span class="p">,</span>
<span class="p">}</span>
<span class="c1"># if there is a need for globals, use a leading underline</span>
<span class="n">_my_online_engine</span> <span class="o">=</span> <span class="kc">None</span>
<div class="viewcode-block" id="init">
<a class="viewcode-back" href="../../../dev/engines/demo/demo_online.html#searx.engines.demo_online.init">[docs]</a>
<span class="k">def</span> <span class="nf">init</span><span class="p">(</span><span class="n">engine_settings</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Initialization of the (online) engine. If no initialization is needed, drop</span>
<span class="sd"> this init function.</span>
<span class="sd"> """</span>
<span class="k">global</span> <span class="n">_my_online_engine</span> <span class="c1"># pylint: disable=global-statement</span>
<span class="n">_my_online_engine</span> <span class="o">=</span> <span class="n">engine_settings</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">'name'</span><span class="p">)</span></div>
<div class="viewcode-block" id="request">
<a class="viewcode-back" href="../../../dev/engines/demo/demo_online.html#searx.engines.demo_online.request">[docs]</a>
<span class="k">def</span> <span class="nf">request</span><span class="p">(</span><span class="n">query</span><span class="p">,</span> <span class="n">params</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Build up the ``params`` for the online request. In this example we build a</span>
<span class="sd"> URL to fetch images from `artic.edu <https://artic.edu>`__</span>
<span class="sd"> """</span>
<span class="n">args</span> <span class="o">=</span> <span class="n">urlencode</span><span class="p">(</span>
<span class="p">{</span>
<span class="s1">'q'</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span>
<span class="s1">'page'</span><span class="p">:</span> <span class="n">params</span><span class="p">[</span><span class="s1">'pageno'</span><span class="p">],</span>
<span class="s1">'fields'</span><span class="p">:</span> <span class="s1">'id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles'</span><span class="p">,</span>
<span class="s1">'limit'</span><span class="p">:</span> <span class="n">page_size</span><span class="p">,</span>
<span class="p">}</span>
<span class="p">)</span>
<span class="n">params</span><span class="p">[</span><span class="s1">'url'</span><span class="p">]</span> <span class="o">=</span> <span class="n">search_api</span> <span class="o">+</span> <span class="n">args</span>
<span class="k">return</span> <span class="n">params</span></div>
<div class="viewcode-block" id="response">
<a class="viewcode-back" href="../../../dev/engines/demo/demo_online.html#searx.engines.demo_online.response">[docs]</a>
<span class="k">def</span> <span class="nf">response</span><span class="p">(</span><span class="n">resp</span><span class="p">):</span>
<span class="w"> </span><span class="sd">"""Parse out the result items from the response. In this example we parse the</span>
<span class="sd"> response from `api.artic.edu <https://artic.edu>`__ and filter out all</span>
<span class="sd"> images.</span>
<span class="sd"> """</span>
<span class="n">results</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">json_data</span> <span class="o">=</span> <span class="n">loads</span><span class="p">(</span><span class="n">resp</span><span class="o">.</span><span class="n">text</span><span class="p">)</span>
<span class="k">for</span> <span class="n">result</span> <span class="ow">in</span> <span class="n">json_data</span><span class="p">[</span><span class="s1">'data'</span><span class="p">]:</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">result</span><span class="p">[</span><span class="s1">'image_id'</span><span class="p">]:</span>
<span class="k">continue</span>
<span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="p">{</span>
<span class="s1">'url'</span><span class="p">:</span> <span class="s1">'https://artic.edu/artworks/</span><span class="si">%(id)s</span><span class="s1">'</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">'title'</span><span class="p">:</span> <span class="n">result</span><span class="p">[</span><span class="s1">'title'</span><span class="p">]</span> <span class="o">+</span> <span class="s2">" (</span><span class="si">%(date_display)s</span><span class="s2">) // </span><span class="si">%(artist_display)s</span><span class="s2">"</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">'content'</span><span class="p">:</span> <span class="s2">"</span><span class="si">%(medium_display)s</span><span class="s2"> // </span><span class="si">%(dimensions)s</span><span class="s2">"</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">'author'</span><span class="p">:</span> <span class="s1">', '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">result</span><span class="p">[</span><span class="s1">'artist_titles'</span><span class="p">]),</span>
<span class="s1">'img_src'</span><span class="p">:</span> <span class="n">image_api</span> <span class="o">+</span> <span class="s1">'/</span><span class="si">%(image_id)s</span><span class="s1">/full/843,/0/default.jpg'</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">'template'</span><span class="p">:</span> <span class="s1">'images.html'</span><span class="p">,</span>
<span class="p">}</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">results</span></div>
</pre></div>
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