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[doc] build from commit fa108c140fb8fe523e9be432f6e92c6812acc6ea
2024-10-31 12:36:39 +00:00
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<h1>Source code for searx.engines.duckduckgo</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;</span>
<span class="sd">DuckDuckGo Lite</span>
<span class="sd">~~~~~~~~~~~~~~~</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">TYPE_CHECKING</span>
<span class="kn">import</span> <span class="nn">re</span>
<span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlencode</span>
<span class="kn">import</span> <span class="nn">json</span>
<span class="kn">import</span> <span class="nn">babel</span>
<span class="kn">import</span> <span class="nn">lxml.html</span>
<span class="kn">from</span> <span class="nn">searx</span> <span class="kn">import</span> <span class="p">(</span>
<span class="n">locales</span><span class="p">,</span>
<span class="n">redislib</span><span class="p">,</span>
<span class="n">external_bang</span><span class="p">,</span>
<span class="p">)</span>
<span class="kn">from</span> <span class="nn">searx.utils</span> <span class="kn">import</span> <span class="p">(</span>
<span class="n">eval_xpath</span><span class="p">,</span>
<span class="n">extract_text</span><span class="p">,</span>
<span class="p">)</span>
<span class="kn">from</span> <span class="nn">searx.network</span> <span class="kn">import</span> <span class="n">get</span> <span class="c1"># see https://github.com/searxng/searxng/issues/762</span>
<span class="kn">from</span> <span class="nn">searx</span> <span class="kn">import</span> <span class="n">redisdb</span>
<span class="kn">from</span> <span class="nn">searx.enginelib.traits</span> <span class="kn">import</span> <span class="n">EngineTraits</span>
<span class="kn">from</span> <span class="nn">searx.utils</span> <span class="kn">import</span> <span class="n">extr</span>
<span class="kn">from</span> <span class="nn">searx.exceptions</span> <span class="kn">import</span> <span class="n">SearxEngineCaptchaException</span>
<span class="k">if</span> <span class="n">TYPE_CHECKING</span><span class="p">:</span>
<span class="kn">import</span> <span class="nn">logging</span>
<span class="n">logger</span><span class="p">:</span> <span class="n">logging</span><span class="o">.</span><span class="n">Logger</span>
<span class="n">traits</span><span class="p">:</span> <span class="n">EngineTraits</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://lite.duckduckgo.com/lite/&#39;</span><span class="p">,</span>
<span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="s1">&#39;Q12805&#39;</span><span class="p">,</span>
<span class="s2">&quot;use_official_api&quot;</span><span class="p">:</span> <span class="kc">False</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;HTML&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="n">send_accept_language_header</span> <span class="o">=</span> <span class="kc">True</span>
<span class="sd">&quot;&quot;&quot;DuckDuckGo-Lite tries to guess user&#39;s prefered language from the HTTP</span>
<span class="sd">``Accept-Language``. Optional the user can select a region filter (but not a</span>
<span class="sd">language).</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="c1"># engine dependent config</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="s1">&#39;web&#39;</span><span class="p">]</span>
<span class="n">paging</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">time_range_support</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">safesearch</span> <span class="o">=</span> <span class="kc">True</span> <span class="c1"># user can&#39;t select but the results are filtered</span>
<span class="n">url</span> <span class="o">=</span> <span class="s2">&quot;https://html.duckduckgo.com/html&quot;</span>
<span class="n">time_range_dict</span> <span class="o">=</span> <span class="p">{</span><span class="s1">&#39;day&#39;</span><span class="p">:</span> <span class="s1">&#39;d&#39;</span><span class="p">,</span> <span class="s1">&#39;week&#39;</span><span class="p">:</span> <span class="s1">&#39;w&#39;</span><span class="p">,</span> <span class="s1">&#39;month&#39;</span><span class="p">:</span> <span class="s1">&#39;m&#39;</span><span class="p">,</span> <span class="s1">&#39;year&#39;</span><span class="p">:</span> <span class="s1">&#39;y&#39;</span><span class="p">}</span>
<span class="n">form_data</span> <span class="o">=</span> <span class="p">{</span><span class="s1">&#39;v&#39;</span><span class="p">:</span> <span class="s1">&#39;l&#39;</span><span class="p">,</span> <span class="s1">&#39;api&#39;</span><span class="p">:</span> <span class="s1">&#39;d.js&#39;</span><span class="p">,</span> <span class="s1">&#39;o&#39;</span><span class="p">:</span> <span class="s1">&#39;json&#39;</span><span class="p">}</span>
<span class="n">__CACHE</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">def</span> <span class="nf">_cache_key</span><span class="p">(</span><span class="n">data</span><span class="p">:</span> <span class="nb">dict</span><span class="p">):</span>
<span class="k">return</span> <span class="s1">&#39;SearXNG_ddg_web_vqd&#39;</span> <span class="o">+</span> <span class="n">redislib</span><span class="o">.</span><span class="n">secret_hash</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">data</span><span class="p">[</span><span class="s1">&#39;q&#39;</span><span class="p">]</span><span class="si">}</span><span class="s2">//</span><span class="si">{</span><span class="n">data</span><span class="p">[</span><span class="s1">&#39;kl&#39;</span><span class="p">]</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
<div class="viewcode-block" id="cache_vqd">
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.cache_vqd">[docs]</a>
<span class="k">def</span> <span class="nf">cache_vqd</span><span class="p">(</span><span class="n">data</span><span class="p">:</span> <span class="nb">dict</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Caches a ``vqd`` value from a query.&quot;&quot;&quot;</span>
<span class="n">c</span> <span class="o">=</span> <span class="n">redisdb</span><span class="o">.</span><span class="n">client</span><span class="p">()</span>
<span class="k">if</span> <span class="n">c</span><span class="p">:</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;cache vqd value: </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="n">c</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="n">_cache_key</span><span class="p">(</span><span class="n">data</span><span class="p">),</span> <span class="n">value</span><span class="p">,</span> <span class="n">ex</span><span class="o">=</span><span class="mi">600</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;MEM cache vqd value: </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">__CACHE</span><span class="p">)</span> <span class="o">&gt;</span> <span class="mi">100</span><span class="p">:</span> <span class="c1"># cache vqd from last 100 queries</span>
<span class="n">__CACHE</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="n">__CACHE</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">_cache_key</span><span class="p">(</span><span class="n">data</span><span class="p">),</span> <span class="n">value</span><span class="p">))</span></div>
<div class="viewcode-block" id="get_vqd">
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.get_vqd">[docs]</a>
<span class="k">def</span> <span class="nf">get_vqd</span><span class="p">(</span><span class="n">data</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Returns the ``vqd`` that fits to the *query* (``data`` from HTTP POST).</span>
<span class="sd"> DDG&#39;s bot detection is sensitive to the ``vqd`` value. For some search terms</span>
<span class="sd"> (such as extremely long search terms that are often sent by bots), no ``vqd``</span>
<span class="sd"> value can be determined.</span>
<span class="sd"> If SearXNG cannot determine a ``vqd`` value, then no request should go out</span>
<span class="sd"> to DDG:</span>
<span class="sd"> A request with a wrong ``vqd`` value leads to DDG temporarily putting</span>
<span class="sd"> SearXNG&#39;s IP on a block list.</span>
<span class="sd"> Requests from IPs in this block list run into timeouts.</span>
<span class="sd"> Not sure, but it seems the block list is a sliding window: to get my IP rid</span>
<span class="sd"> from the bot list I had to cool down my IP for 1h (send no requests from</span>
<span class="sd"> that IP to DDG).</span>
<span class="sd"> TL;DR; the ``vqd`` value is needed to pass DDG&#39;s bot protection and is used</span>
<span class="sd"> by all request to DDG:</span>
<span class="sd"> - DuckDuckGo Lite: ``https://lite.duckduckgo.com/lite`` (POST form data)</span>
<span class="sd"> - DuckDuckGo Web: ``https://links.duckduckgo.com/d.js?q=...&amp;vqd=...``</span>
<span class="sd"> - DuckDuckGo Images: ``https://duckduckgo.com/i.js??q=...&amp;vqd=...``</span>
<span class="sd"> - DuckDuckGo Videos: ``https://duckduckgo.com/v.js??q=...&amp;vqd=...``</span>
<span class="sd"> - DuckDuckGo News: ``https://duckduckgo.com/news.js??q=...&amp;vqd=...``</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="n">key</span> <span class="o">=</span> <span class="n">_cache_key</span><span class="p">(</span><span class="n">data</span><span class="p">)</span>
<span class="n">value</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">c</span> <span class="o">=</span> <span class="n">redisdb</span><span class="o">.</span><span class="n">client</span><span class="p">()</span>
<span class="k">if</span> <span class="n">c</span><span class="p">:</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">c</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">key</span><span class="p">)</span>
<span class="k">if</span> <span class="n">value</span> <span class="ow">or</span> <span class="n">value</span> <span class="o">==</span> <span class="sa">b</span><span class="s1">&#39;&#39;</span><span class="p">:</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">value</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="s1">&#39;utf-8&#39;</span><span class="p">)</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;re-use CACHED vqd value: </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">return</span> <span class="n">value</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">__CACHE</span><span class="p">:</span>
<span class="k">if</span> <span class="n">k</span> <span class="o">==</span> <span class="n">key</span><span class="p">:</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;MEM re-use CACHED vqd value: </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">value</span><span class="p">)</span>
<span class="k">return</span> <span class="n">value</span>
<span class="k">return</span> <span class="kc">None</span></div>
<div class="viewcode-block" id="get_ddg_lang">
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.get_ddg_lang">[docs]</a>
<span class="k">def</span> <span class="nf">get_ddg_lang</span><span class="p">(</span><span class="n">eng_traits</span><span class="p">:</span> <span class="n">EngineTraits</span><span class="p">,</span> <span class="n">sxng_locale</span><span class="p">,</span> <span class="n">default</span><span class="o">=</span><span class="s1">&#39;en_US&#39;</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Get DuckDuckGo&#39;s language identifier from SearXNG&#39;s locale.</span>
<span class="sd"> DuckDuckGo defines its languages by region codes (see</span>
<span class="sd"> :py:obj:`fetch_traits`).</span>
<span class="sd"> To get region and language of a DDG service use:</span>
<span class="sd"> .. code: python</span>
<span class="sd"> eng_region = traits.get_region(params[&#39;searxng_locale&#39;], traits.all_locale)</span>
<span class="sd"> eng_lang = get_ddg_lang(traits, params[&#39;searxng_locale&#39;])</span>
<span class="sd"> It might confuse, but the ``l`` value of the cookie is what SearXNG calls</span>
<span class="sd"> the *region*:</span>
<span class="sd"> .. code:: python</span>
<span class="sd"> # !ddi paris :es-AR --&gt; {&#39;ad&#39;: &#39;es_AR&#39;, &#39;ah&#39;: &#39;ar-es&#39;, &#39;l&#39;: &#39;ar-es&#39;}</span>
<span class="sd"> params[&#39;cookies&#39;][&#39;ad&#39;] = eng_lang</span>
<span class="sd"> params[&#39;cookies&#39;][&#39;ah&#39;] = eng_region</span>
<span class="sd"> params[&#39;cookies&#39;][&#39;l&#39;] = eng_region</span>
<span class="sd"> .. hint::</span>
<span class="sd"> `DDG-lite &lt;https://lite.duckduckgo.com/lite&gt;`__ and the *no Javascript*</span>
<span class="sd"> page https://html.duckduckgo.com/html do not offer a language selection</span>
<span class="sd"> to the user, only a region can be selected by the user (``eng_region``</span>
<span class="sd"> from the example above). DDG-lite and *no Javascript* store the selected</span>
<span class="sd"> region in a cookie::</span>
<span class="sd"> params[&#39;cookies&#39;][&#39;kl&#39;] = eng_region # &#39;ar-es&#39;</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="k">return</span> <span class="n">eng_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;lang_region&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">get</span><span class="p">(</span> <span class="c1"># type: ignore</span>
<span class="n">sxng_locale</span><span class="p">,</span> <span class="n">eng_traits</span><span class="o">.</span><span class="n">get_language</span><span class="p">(</span><span class="n">sxng_locale</span><span class="p">,</span> <span class="n">default</span><span class="p">)</span>
<span class="p">)</span></div>
<span class="n">ddg_reg_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;tw-tzh&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_TW&#39;</span><span class="p">,</span>
<span class="s1">&#39;hk-tzh&#39;</span><span class="p">:</span> <span class="s1">&#39;zh_HK&#39;</span><span class="p">,</span>
<span class="s1">&#39;ct-ca&#39;</span><span class="p">:</span> <span class="s1">&#39;skip&#39;</span><span class="p">,</span> <span class="c1"># ct-ca and es-ca both map to ca_ES</span>
<span class="s1">&#39;es-ca&#39;</span><span class="p">:</span> <span class="s1">&#39;ca_ES&#39;</span><span class="p">,</span>
<span class="s1">&#39;id-en&#39;</span><span class="p">:</span> <span class="s1">&#39;id_ID&#39;</span><span class="p">,</span>
<span class="s1">&#39;no-no&#39;</span><span class="p">:</span> <span class="s1">&#39;nb_NO&#39;</span><span class="p">,</span>
<span class="s1">&#39;jp-jp&#39;</span><span class="p">:</span> <span class="s1">&#39;ja_JP&#39;</span><span class="p">,</span>
<span class="s1">&#39;kr-kr&#39;</span><span class="p">:</span> <span class="s1">&#39;ko_KR&#39;</span><span class="p">,</span>
<span class="s1">&#39;xa-ar&#39;</span><span class="p">:</span> <span class="s1">&#39;ar_SA&#39;</span><span class="p">,</span>
<span class="s1">&#39;sl-sl&#39;</span><span class="p">:</span> <span class="s1">&#39;sl_SI&#39;</span><span class="p">,</span>
<span class="s1">&#39;th-en&#39;</span><span class="p">:</span> <span class="s1">&#39;th_TH&#39;</span><span class="p">,</span>
<span class="s1">&#39;vn-en&#39;</span><span class="p">:</span> <span class="s1">&#39;vi_VN&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="n">ddg_lang_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="c1"># use ar --&gt; ar_EG (Egypt&#39;s arabic)</span>
<span class="s2">&quot;ar_DZ&quot;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s2">&quot;ar_JO&quot;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s2">&quot;ar_SA&quot;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># use bn --&gt; bn_BD</span>
<span class="s1">&#39;bn_IN&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># use de --&gt; de_DE</span>
<span class="s1">&#39;de_CH&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># use en --&gt; en_US,</span>
<span class="s1">&#39;en_AU&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;en_CA&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;en_GB&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># Esperanto</span>
<span class="s1">&#39;eo_XX&#39;</span><span class="p">:</span> <span class="s1">&#39;eo&#39;</span><span class="p">,</span>
<span class="c1"># use es --&gt; es_ES,</span>
<span class="s1">&#39;es_AR&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_CL&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_CO&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_CR&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_EC&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_MX&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_PE&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_UY&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;es_VE&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># use fr --&gt; rf_FR</span>
<span class="s1">&#39;fr_CA&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;fr_CH&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="s1">&#39;fr_BE&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># use nl --&gt; nl_NL</span>
<span class="s1">&#39;nl_BE&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># use pt --&gt; pt_PT</span>
<span class="s1">&#39;pt_BR&#39;</span><span class="p">:</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">,</span>
<span class="c1"># skip these languages</span>
<span class="s1">&#39;od_IN&#39;</span><span class="p">:</span> <span class="s1">&#39;skip&#39;</span><span class="p">,</span>
<span class="s1">&#39;io_XX&#39;</span><span class="p">:</span> <span class="s1">&#39;skip&#39;</span><span class="p">,</span>
<span class="s1">&#39;tokipona_XX&#39;</span><span class="p">:</span> <span class="s1">&#39;skip&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="k">def</span> <span class="nf">quote_ddg_bangs</span><span class="p">(</span><span class="n">query</span><span class="p">):</span>
<span class="c1"># quote ddg bangs</span>
<span class="n">query_parts</span> <span class="o">=</span> <span class="p">[]</span>
<span class="c1"># for val in re.split(r&#39;(\s+)&#39;, query):</span>
<span class="k">for</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">re</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="sa">r</span><span class="s1">&#39;(\s+)&#39;</span><span class="p">,</span> <span class="n">query</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">val</span><span class="o">.</span><span class="n">strip</span><span class="p">():</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="n">val</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s1">&#39;!&#39;</span><span class="p">)</span> <span class="ow">and</span> <span class="n">external_bang</span><span class="o">.</span><span class="n">get_node</span><span class="p">(</span><span class="n">external_bang</span><span class="o">.</span><span class="n">EXTERNAL_BANGS</span><span class="p">,</span> <span class="n">val</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span>
<span class="n">val</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;&#39;</span><span class="si">{</span><span class="n">val</span><span class="si">}</span><span class="s2">&#39;&quot;</span>
<span class="n">query_parts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">val</span><span class="p">)</span>
<span class="k">return</span> <span class="s1">&#39; &#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">query_parts</span><span class="p">)</span>
<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="n">query</span> <span class="o">=</span> <span class="n">quote_ddg_bangs</span><span class="p">(</span><span class="n">query</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">query</span><span class="p">)</span> <span class="o">&gt;=</span> <span class="mi">500</span><span class="p">:</span>
<span class="c1"># DDG does not accept queries with more than 499 chars</span>
<span class="n">params</span><span class="p">[</span><span class="s2">&quot;url&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">return</span>
<span class="c1"># Advanced search syntax ends in CAPTCHA</span>
<span class="c1"># https://duckduckgo.com/duckduckgo-help-pages/results/syntax/</span>
<span class="n">query</span> <span class="o">=</span> <span class="p">[</span>
<span class="n">x</span><span class="o">.</span><span class="n">removeprefix</span><span class="p">(</span><span class="s2">&quot;site:&quot;</span><span class="p">)</span><span class="o">.</span><span class="n">removeprefix</span><span class="p">(</span><span class="s2">&quot;intitle:&quot;</span><span class="p">)</span><span class="o">.</span><span class="n">removeprefix</span><span class="p">(</span><span class="s2">&quot;inurl:&quot;</span><span class="p">)</span><span class="o">.</span><span class="n">removeprefix</span><span class="p">(</span><span class="s2">&quot;filetype:&quot;</span><span class="p">)</span>
<span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">query</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
<span class="p">]</span>
<span class="n">eng_region</span> <span class="o">=</span> <span class="n">traits</span><span class="o">.</span><span class="n">get_region</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s1">&#39;searxng_locale&#39;</span><span class="p">],</span> <span class="n">traits</span><span class="o">.</span><span class="n">all_locale</span><span class="p">)</span>
<span class="k">if</span> <span class="n">eng_region</span> <span class="o">==</span> <span class="s2">&quot;wt-wt&quot;</span><span class="p">:</span>
<span class="c1"># https://html.duckduckgo.com/html sets an empty value for &quot;all&quot;.</span>
<span class="n">eng_region</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;kl&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_region</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;cookies&#39;</span><span class="p">][</span><span class="s1">&#39;kl&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_region</span>
<span class="c1"># eng_lang = get_ddg_lang(traits, params[&#39;searxng_locale&#39;])</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">url</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;method&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;POST&#39;</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;q&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">query</span>
<span class="c1"># The API is not documented, so we do some reverse engineering and emulate</span>
<span class="c1"># what https://html.duckduckgo.com/html does when you press &quot;next Page&quot; link</span>
<span class="c1"># again and again ..</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">][</span><span class="s1">&#39;Content-Type&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;application/x-www-form-urlencoded&#39;</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">][</span><span class="s1">&#39;Sec-Fetch-Dest&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;document&quot;</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">][</span><span class="s1">&#39;Sec-Fetch-Mode&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;navigate&quot;</span> <span class="c1"># at least this one is used by ddg&#39;s bot detection</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">][</span><span class="s1">&#39;Sec-Fetch-Site&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;same-origin&quot;</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">][</span><span class="s1">&#39;Sec-Fetch-User&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;?1&quot;</span>
<span class="c1"># Form of the initial search page does have empty values in the form</span>
<span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;pageno&#39;</span><span class="p">]</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;b&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;df&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;&#39;</span>
<span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;time_range&#39;</span><span class="p">]</span> <span class="ow">in</span> <span class="n">time_range_dict</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;df&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">time_range_dict</span><span class="p">[</span><span class="n">params</span><span class="p">[</span><span class="s1">&#39;time_range&#39;</span><span class="p">]]</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;cookies&#39;</span><span class="p">][</span><span class="s1">&#39;df&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">time_range_dict</span><span class="p">[</span><span class="n">params</span><span class="p">[</span><span class="s1">&#39;time_range&#39;</span><span class="p">]]</span>
<span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;pageno&#39;</span><span class="p">]</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span>
<span class="c1"># second page does have an offset of 20</span>
<span class="n">offset</span> <span class="o">=</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="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="o">*</span> <span class="mi">20</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;s&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">offset</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;dc&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">offset</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">elif</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;pageno&#39;</span><span class="p">]</span> <span class="o">&gt;</span> <span class="mi">2</span><span class="p">:</span>
<span class="c1"># third and following pages do have an offset of 20 + n*50</span>
<span class="n">offset</span> <span class="o">=</span> <span class="mi">20</span> <span class="o">+</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="o">-</span> <span class="mi">2</span><span class="p">)</span> <span class="o">*</span> <span class="mi">50</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;s&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">offset</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;dc&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">offset</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;pageno&#39;</span><span class="p">]</span> <span class="o">&gt;</span> <span class="mi">1</span><span class="p">:</span>
<span class="c1"># initial page does not have these additional data in the input form</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;o&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">form_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;o&#39;</span><span class="p">,</span> <span class="s1">&#39;json&#39;</span><span class="p">)</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;api&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">form_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;api&#39;</span><span class="p">,</span> <span class="s1">&#39;d.js&#39;</span><span class="p">)</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;nextParams&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">form_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;nextParams&#39;</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;v&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">form_data</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;v&#39;</span><span class="p">,</span> <span class="s1">&#39;l&#39;</span><span class="p">)</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;headers&#39;</span><span class="p">][</span><span class="s1">&#39;Referer&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">url</span>
<span class="c1"># from here on no more params[&#39;data&#39;] shuld be set, since this dict is</span>
<span class="c1"># needed to get a vqd value from the cache ..</span>
<span class="n">vqd</span> <span class="o">=</span> <span class="n">get_vqd</span><span class="p">(</span><span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">])</span>
<span class="c1"># Certain conditions must be met in order to call up one of the</span>
<span class="c1"># following pages ...</span>
<span class="k">if</span> <span class="n">vqd</span><span class="p">:</span>
<span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">][</span><span class="s1">&#39;vqd&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">vqd</span> <span class="c1"># follow up pages / requests needs a vqd argument</span>
<span class="k">else</span><span class="p">:</span>
<span class="c1"># Don&#39;t try to call follow up pages without a vqd value. DDG</span>
<span class="c1"># recognizes this as a request from a bot. This lowers the</span>
<span class="c1"># reputation of the SearXNG IP and DDG starts to activate CAPTCHAs.</span>
<span class="n">params</span><span class="p">[</span><span class="s2">&quot;url&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">return</span>
<span class="k">if</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;searxng_locale&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s2">&quot;zh&quot;</span><span class="p">):</span>
<span class="c1"># Some locales (at least China) do not have a &quot;next page&quot; button and ddg</span>
<span class="c1"># will return a HTTP/2 403 Forbidden for a request of such a page.</span>
<span class="n">params</span><span class="p">[</span><span class="s2">&quot;url&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
<span class="k">return</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;param data: </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">])</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;param cookies: </span><span class="si">%s</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">params</span><span class="p">[</span><span class="s1">&#39;cookies&#39;</span><span class="p">])</span>
<div class="viewcode-block" id="is_ddg_captcha">
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.is_ddg_captcha">[docs]</a>
<span class="k">def</span> <span class="nf">is_ddg_captcha</span><span class="p">(</span><span class="n">dom</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;In case of CAPTCHA ddg response its own *not a Robot* dialog and is not</span>
<span class="sd"> redirected to a CAPTCHA page.&quot;&quot;&quot;</span>
<span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s2">&quot;//form[@id=&#39;challenge-form&#39;]&quot;</span><span class="p">))</span></div>
<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="k">if</span> <span class="n">resp</span><span class="o">.</span><span class="n">status_code</span> <span class="o">==</span> <span class="mi">303</span><span class="p">:</span>
<span class="k">return</span> <span class="p">[]</span>
<span class="n">results</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">doc</span> <span class="o">=</span> <span class="n">lxml</span><span class="o">.</span><span class="n">html</span><span class="o">.</span><span class="n">fromstring</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">if</span> <span class="n">is_ddg_captcha</span><span class="p">(</span><span class="n">doc</span><span class="p">):</span>
<span class="c1"># set suspend time to zero is OK --&gt; ddg does not block the IP</span>
<span class="k">raise</span> <span class="n">SearxEngineCaptchaException</span><span class="p">(</span><span class="n">suspended_time</span><span class="o">=</span><span class="mi">0</span><span class="p">,</span> <span class="n">message</span><span class="o">=</span><span class="sa">f</span><span class="s2">&quot;CAPTCHA (</span><span class="si">{</span><span class="n">resp</span><span class="o">.</span><span class="n">search_params</span><span class="p">[</span><span class="s1">&#39;data&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;kl&#39;</span><span class="p">)</span><span class="si">}</span><span class="s2">)&quot;</span><span class="p">)</span>
<span class="n">form</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">doc</span><span class="p">,</span> <span class="s1">&#39;//input[@name=&quot;vqd&quot;]/..&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">form</span><span class="p">):</span>
<span class="c1"># some locales (at least China) does not have a &quot;next page&quot; button</span>
<span class="n">form</span> <span class="o">=</span> <span class="n">form</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="n">form_vqd</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">form</span><span class="p">,</span> <span class="s1">&#39;//input[@name=&quot;vqd&quot;]/@value&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
<span class="n">cache_vqd</span><span class="p">(</span><span class="n">resp</span><span class="o">.</span><span class="n">search_params</span><span class="p">[</span><span class="s2">&quot;data&quot;</span><span class="p">],</span> <span class="n">form_vqd</span><span class="p">)</span>
<span class="c1"># just select &quot;web-result&quot; and ignore results of class &quot;result--ad result--ad--small&quot;</span>
<span class="k">for</span> <span class="n">div_result</span> <span class="ow">in</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">doc</span><span class="p">,</span> <span class="s1">&#39;//div[@id=&quot;links&quot;]/div[contains(@class, &quot;web-result&quot;)]&#39;</span><span class="p">):</span>
<span class="n">item</span> <span class="o">=</span> <span class="p">{}</span>
<span class="n">title</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">div_result</span><span class="p">,</span> <span class="s1">&#39;.//h2/a&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">title</span><span class="p">:</span>
<span class="c1"># this is the &quot;No results.&quot; item in the result list</span>
<span class="k">continue</span>
<span class="n">item</span><span class="p">[</span><span class="s2">&quot;title&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">title</span><span class="p">)</span>
<span class="n">item</span><span class="p">[</span><span class="s2">&quot;url&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">div_result</span><span class="p">,</span> <span class="s1">&#39;.//h2/a/@href&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span>
<span class="n">item</span><span class="p">[</span><span class="s2">&quot;content&quot;</span><span class="p">]</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">div_result</span><span class="p">,</span> <span class="s1">&#39;.//a[contains(@class, &quot;result__snippet&quot;)]&#39;</span><span class="p">)[</span><span class="mi">0</span><span class="p">])</span>
<span class="n">results</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">zero_click_info_xpath</span> <span class="o">=</span> <span class="s1">&#39;//div[@id=&quot;zero_click_abstract&quot;]&#39;</span>
<span class="n">zero_click</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">doc</span><span class="p">,</span> <span class="n">zero_click_info_xpath</span><span class="p">))</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
<span class="k">if</span> <span class="n">zero_click</span> <span class="ow">and</span> <span class="s2">&quot;Your IP address is&quot;</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">zero_click</span> <span class="ow">and</span> <span class="s2">&quot;Your user agent:&quot;</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">zero_click</span><span class="p">:</span>
<span class="n">current_query</span> <span class="o">=</span> <span class="n">resp</span><span class="o">.</span><span class="n">search_params</span><span class="p">[</span><span class="s2">&quot;data&quot;</span><span class="p">]</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;q&quot;</span><span class="p">)</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;answer&#39;</span><span class="p">:</span> <span class="n">zero_click</span><span class="p">,</span>
<span class="s1">&#39;url&#39;</span><span class="p">:</span> <span class="s2">&quot;https://duckduckgo.com/?&quot;</span> <span class="o">+</span> <span class="n">urlencode</span><span class="p">({</span><span class="s2">&quot;q&quot;</span><span class="p">:</span> <span class="n">current_query</span><span class="p">}),</span>
<span class="p">}</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">results</span>
<div class="viewcode-block" id="fetch_traits">
<a class="viewcode-back" href="../../../dev/engines/online/duckduckgo.html#searx.engines.duckduckgo.fetch_traits">[docs]</a>
<span class="k">def</span> <span class="nf">fetch_traits</span><span class="p">(</span><span class="n">engine_traits</span><span class="p">:</span> <span class="n">EngineTraits</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Fetch languages &amp; regions from DuckDuckGo.</span>
<span class="sd"> SearXNG&#39;s ``all`` locale maps DuckDuckGo&#39;s &quot;Alle regions&quot; (``wt-wt``).</span>
<span class="sd"> DuckDuckGo&#39;s language &quot;Browsers prefered language&quot; (``wt_WT``) makes no</span>
<span class="sd"> sense in a SearXNG request since SearXNG&#39;s ``all`` will not add a</span>
<span class="sd"> ``Accept-Language`` HTTP header. The value in ``engine_traits.all_locale``</span>
<span class="sd"> is ``wt-wt`` (the region).</span>
<span class="sd"> Beside regions DuckDuckGo also defines its languages by region codes. By</span>
<span class="sd"> example these are the english languages in DuckDuckGo:</span>
<span class="sd"> - en_US</span>
<span class="sd"> - en_AU</span>
<span class="sd"> - en_CA</span>
<span class="sd"> - en_GB</span>
<span class="sd"> The function :py:obj:`get_ddg_lang` evaluates DuckDuckGo&#39;s language from</span>
<span class="sd"> SearXNG&#39;s locale.</span>
<span class="sd"> &quot;&quot;&quot;</span>
<span class="c1"># pylint: disable=too-many-branches, too-many-statements, disable=import-outside-toplevel</span>
<span class="kn">from</span> <span class="nn">searx.utils</span> <span class="kn">import</span> <span class="n">js_variable_to_python</span>
<span class="c1"># fetch regions</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">all_locale</span> <span class="o">=</span> <span class="s1">&#39;wt-wt&#39;</span>
<span class="c1"># updated from u661.js to u.7669f071a13a7daa57cb / should be updated automatically?</span>
<span class="n">resp</span> <span class="o">=</span> <span class="n">get</span><span class="p">(</span><span class="s1">&#39;https://duckduckgo.com/dist/util/u.7669f071a13a7daa57cb.js&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">resp</span><span class="o">.</span><span class="n">ok</span><span class="p">:</span> <span class="c1"># type: ignore</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;ERROR: response from DuckDuckGo is not OK.&quot;</span><span class="p">)</span>
<span class="n">js_code</span> <span class="o">=</span> <span class="n">extr</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="s1">&#39;regions:&#39;</span><span class="p">,</span> <span class="s1">&#39;,snippetLengths&#39;</span><span class="p">)</span>
<span class="n">regions</span> <span class="o">=</span> <span class="n">json</span><span class="o">.</span><span class="n">loads</span><span class="p">(</span><span class="n">js_code</span><span class="p">)</span>
<span class="k">for</span> <span class="n">eng_tag</span><span class="p">,</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">regions</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
<span class="k">if</span> <span class="n">eng_tag</span> <span class="o">==</span> <span class="s1">&#39;wt-wt&#39;</span><span class="p">:</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">all_locale</span> <span class="o">=</span> <span class="s1">&#39;wt-wt&#39;</span>
<span class="k">continue</span>
<span class="n">region</span> <span class="o">=</span> <span class="n">ddg_reg_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">eng_tag</span><span class="p">)</span>
<span class="k">if</span> <span class="n">region</span> <span class="o">==</span> <span class="s1">&#39;skip&#39;</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">region</span><span class="p">:</span>
<span class="n">eng_territory</span><span class="p">,</span> <span class="n">eng_lang</span> <span class="o">=</span> <span class="n">eng_tag</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="n">region</span> <span class="o">=</span> <span class="n">eng_lang</span> <span class="o">+</span> <span class="s1">&#39;_&#39;</span> <span class="o">+</span> <span class="n">eng_territory</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">sxng_tag</span> <span class="o">=</span> <span class="n">locales</span><span class="o">.</span><span class="n">region_tag</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">parse</span><span class="p">(</span><span class="n">region</span><span class="p">))</span>
<span class="k">except</span> <span class="n">babel</span><span class="o">.</span><span class="n">UnknownLocaleError</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"> (</span><span class="si">%s</span><span class="s2">) -&gt; </span><span class="si">%s</span><span class="s2"> is unknown by babel&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">eng_tag</span><span class="p">,</span> <span class="n">region</span><span class="p">))</span>
<span class="k">continue</span>
<span class="n">conflict</span> <span class="o">=</span> <span class="n">engine_traits</span><span class="o">.</span><span class="n">regions</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">sxng_tag</span><span class="p">)</span>
<span class="k">if</span> <span class="n">conflict</span><span class="p">:</span>
<span class="k">if</span> <span class="n">conflict</span> <span class="o">!=</span> <span class="n">eng_tag</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;CONFLICT: babel </span><span class="si">%s</span><span class="s2"> --&gt; </span><span class="si">%s</span><span class="s2">, </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">sxng_tag</span><span class="p">,</span> <span class="n">conflict</span><span class="p">,</span> <span class="n">eng_tag</span><span class="p">))</span>
<span class="k">continue</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">regions</span><span class="p">[</span><span class="n">sxng_tag</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_tag</span>
<span class="c1"># fetch languages</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;lang_region&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
<span class="n">js_code</span> <span class="o">=</span> <span class="n">extr</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="s1">&#39;languages:&#39;</span><span class="p">,</span> <span class="s1">&#39;,regions&#39;</span><span class="p">)</span>
<span class="n">languages</span> <span class="o">=</span> <span class="n">js_variable_to_python</span><span class="p">(</span><span class="n">js_code</span><span class="p">)</span>
<span class="k">for</span> <span class="n">eng_lang</span><span class="p">,</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">languages</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
<span class="k">if</span> <span class="n">eng_lang</span> <span class="o">==</span> <span class="s1">&#39;wt_WT&#39;</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">babel_tag</span> <span class="o">=</span> <span class="n">ddg_lang_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">eng_lang</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">)</span>
<span class="k">if</span> <span class="n">babel_tag</span> <span class="o">==</span> <span class="s1">&#39;skip&#39;</span><span class="p">:</span>
<span class="k">continue</span>
<span class="k">try</span><span class="p">:</span>
<span class="k">if</span> <span class="n">babel_tag</span> <span class="o">==</span> <span class="s1">&#39;lang_region&#39;</span><span class="p">:</span>
<span class="n">sxng_tag</span> <span class="o">=</span> <span class="n">locales</span><span class="o">.</span><span class="n">region_tag</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">parse</span><span class="p">(</span><span class="n">eng_lang</span><span class="p">))</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;lang_region&#39;</span><span class="p">][</span><span class="n">sxng_tag</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_lang</span>
<span class="k">continue</span>
<span class="n">sxng_tag</span> <span class="o">=</span> <span class="n">locales</span><span class="o">.</span><span class="n">language_tag</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">parse</span><span class="p">(</span><span class="n">babel_tag</span><span class="p">))</span>
<span class="k">except</span> <span class="n">babel</span><span class="o">.</span><span class="n">UnknownLocaleError</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;ERROR: language </span><span class="si">%s</span><span class="s2"> (</span><span class="si">%s</span><span class="s2">) is unknown by babel&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">))</span>
<span class="k">continue</span>
<span class="n">conflict</span> <span class="o">=</span> <span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">sxng_tag</span><span class="p">)</span>
<span class="k">if</span> <span class="n">conflict</span><span class="p">:</span>
<span class="k">if</span> <span class="n">conflict</span> <span class="o">!=</span> <span class="n">eng_lang</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">&quot;CONFLICT: babel </span><span class="si">%s</span><span class="s2"> --&gt; </span><span class="si">%s</span><span class="s2">, </span><span class="si">%s</span><span class="s2">&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">sxng_tag</span><span class="p">,</span> <span class="n">conflict</span><span class="p">,</span> <span class="n">eng_lang</span><span class="p">))</span>
<span class="k">continue</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="p">[</span><span class="n">sxng_tag</span><span class="p">]</span> <span class="o">=</span> <span class="n">eng_lang</span></div>
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