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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">&quot;&quot;&quot;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 &lt;https://www.artic.edu&gt;`_</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">&quot;&quot;&quot;</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">&#39;online&#39;</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">&#39;general&#39;</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">&#39;images&#39;</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">&#39;https://api.artic.edu/api/v1/artworks/search?&#39;</span>
<span class="n">image_api</span> <span class="o">=</span> <span class="s1">&#39;https://www.artic.edu/iiif/2/&#39;</span>
<span class="n">about</span> <span class="o">=</span> <span class="p">{</span>
<span class="s2">&quot;website&quot;</span><span class="p">:</span> <span class="s1">&#39;https://www.artic.edu&#39;</span><span class="p">,</span>
<span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="s1">&#39;Q239303&#39;</span><span class="p">,</span>
<span class="s2">&quot;official_api_documentation&quot;</span><span class="p">:</span> <span class="s1">&#39;http://api.artic.edu/docs/&#39;</span><span class="p">,</span>
<span class="s2">&quot;use_official_api&quot;</span><span class="p">:</span> <span class="kc">True</span><span class="p">,</span>
<span class="s2">&quot;require_api_key&quot;</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
<span class="s2">&quot;results&quot;</span><span class="p">:</span> <span class="s1">&#39;JSON&#39;</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">&quot;&quot;&quot;Initialization of the (online) engine. If no initialization is needed, drop</span>
<span class="sd"> this init function.</span>
<span class="sd"> &quot;&quot;&quot;</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">&#39;name&#39;</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">&quot;&quot;&quot;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 &lt;https://artic.edu&gt;`__</span>
<span class="sd"> &quot;&quot;&quot;</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">&#39;q&#39;</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span>
<span class="s1">&#39;page&#39;</span><span class="p">:</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;pageno&#39;</span><span class="p">],</span>
<span class="s1">&#39;fields&#39;</span><span class="p">:</span> <span class="s1">&#39;id,title,artist_display,medium_display,image_id,date_display,dimensions,artist_titles&#39;</span><span class="p">,</span>
<span class="s1">&#39;limit&#39;</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">&#39;url&#39;</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">&quot;&quot;&quot;Parse out the result items from the response. In this example we parse the</span>
<span class="sd"> response from `api.artic.edu &lt;https://artic.edu&gt;`__ and filter out all</span>
<span class="sd"> images.</span>
<span class="sd"> &quot;&quot;&quot;</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">&#39;data&#39;</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">&#39;image_id&#39;</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">&#39;url&#39;</span><span class="p">:</span> <span class="s1">&#39;https://artic.edu/artworks/</span><span class="si">%(id)s</span><span class="s1">&#39;</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">&#39;title&#39;</span><span class="p">:</span> <span class="n">result</span><span class="p">[</span><span class="s1">&#39;title&#39;</span><span class="p">]</span> <span class="o">+</span> <span class="s2">&quot; (</span><span class="si">%(date_display)s</span><span class="s2">) // </span><span class="si">%(artist_display)s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">&#39;content&#39;</span><span class="p">:</span> <span class="s2">&quot;</span><span class="si">%(medium_display)s</span><span class="s2"> // </span><span class="si">%(dimensions)s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">&#39;author&#39;</span><span class="p">:</span> <span class="s1">&#39;, &#39;</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">&#39;artist_titles&#39;</span><span class="p">]),</span>
<span class="s1">&#39;img_src&#39;</span><span class="p">:</span> <span class="n">image_api</span> <span class="o">+</span> <span class="s1">&#39;/</span><span class="si">%(image_id)s</span><span class="s1">/full/843,/0/default.jpg&#39;</span> <span class="o">%</span> <span class="n">result</span><span class="p">,</span>
<span class="s1">&#39;template&#39;</span><span class="p">:</span> <span class="s1">&#39;images.html&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">results</span></div>
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