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[doc] build from commit fd93d0c6025470ad024f50798ca3f16d30dbf732
2024-04-28 14:38:56 +02:00
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<h1>Source code for searx.engines.bing</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;This is the implementation of the Bing-WEB engine. Some of this</span>
<span class="sd">implementations are shared by other engines:</span>
<span class="sd">- :ref:`bing images engine`</span>
<span class="sd">- :ref:`bing news engine`</span>
<span class="sd">- :ref:`bing videos engine`</span>
<span class="sd">On the `preference page`_ Bing offers a lot of languages an regions (see section</span>
<span class="sd">LANGUAGE and COUNTRY/REGION). The Language is the language of the UI, we need</span>
<span class="sd">in SearXNG to get the translations of data such as *&quot;published last week&quot;*.</span>
<span class="sd">There is a description of the offical search-APIs_, unfortunately this is not</span>
<span class="sd">the API we can use or that bing itself would use. You can look up some things</span>
<span class="sd">in the API to get a better picture of bing, but the value specifications like</span>
<span class="sd">the market codes are usually outdated or at least no longer used by bing itself.</span>
<span class="sd">The market codes have been harmonized and are identical for web, video and</span>
<span class="sd">images. The news area has also been harmonized with the other categories. Only</span>
<span class="sd">political adjustments still seem to be made -- for example, there is no news</span>
<span class="sd">category for the Chinese market.</span>
<span class="sd">.. _preference page: https://www.bing.com/account/general</span>
<span class="sd">.. _search-APIs: https://learn.microsoft.com/en-us/bing/search-apis/</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="c1"># pylint: disable=too-many-branches, invalid-name</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">base64</span>
<span class="kn">import</span> <span class="nn">re</span>
<span class="kn">import</span> <span class="nn">time</span>
<span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">parse_qs</span><span class="p">,</span> <span class="n">urlencode</span><span class="p">,</span> <span class="n">urlparse</span>
<span class="kn">from</span> <span class="nn">lxml</span> <span class="kn">import</span> <span class="n">html</span>
<span class="kn">import</span> <span class="nn">babel</span>
<span class="kn">import</span> <span class="nn">babel.languages</span>
<span class="kn">from</span> <span class="nn">searx.utils</span> <span class="kn">import</span> <span class="n">eval_xpath</span><span class="p">,</span> <span class="n">extract_text</span><span class="p">,</span> <span class="n">eval_xpath_list</span><span class="p">,</span> <span class="n">eval_xpath_getindex</span>
<span class="kn">from</span> <span class="nn">searx.locales</span> <span class="kn">import</span> <span class="n">language_tag</span><span class="p">,</span> <span class="n">region_tag</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="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="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">()</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://www.bing.com&#39;</span><span class="p">,</span>
<span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="s1">&#39;Q182496&#39;</span><span class="p">,</span>
<span class="s2">&quot;official_api_documentation&quot;</span><span class="p">:</span> <span class="s1">&#39;https://www.microsoft.com/en-us/bing/apis/bing-web-search-api&#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="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">max_page</span> <span class="o">=</span> <span class="mi">200</span>
<span class="sd">&quot;&quot;&quot;200 pages maximum (``&amp;first=1991``)&quot;&quot;&quot;</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="sd">&quot;&quot;&quot;Bing results are always SFW. To get NSFW links from bing some age</span>
<span class="sd">verification by a cookie is needed / thats not possible in SearXNG.</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="n">base_url</span> <span class="o">=</span> <span class="s1">&#39;https://www.bing.com/search&#39;</span>
<span class="sd">&quot;&quot;&quot;Bing (Web) search URL&quot;&quot;&quot;</span>
<span class="k">def</span> <span class="nf">_page_offset</span><span class="p">(</span><span class="n">pageno</span><span class="p">):</span>
<span class="k">return</span> <span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="n">pageno</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">10</span> <span class="o">+</span> <span class="mi">1</span>
<span class="k">def</span> <span class="nf">set_bing_cookies</span><span class="p">(</span><span class="n">params</span><span class="p">,</span> <span class="n">engine_language</span><span class="p">,</span> <span class="n">engine_region</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;_EDGE_CD&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="sa">f</span><span class="s1">&#39;m=</span><span class="si">{</span><span class="n">engine_region</span><span class="si">}</span><span class="s1">&amp;u=</span><span class="si">{</span><span class="n">engine_language</span><span class="si">}</span><span class="s1">&#39;</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;_EDGE_S&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="sa">f</span><span class="s1">&#39;mkt=</span><span class="si">{</span><span class="n">engine_region</span><span class="si">}</span><span class="s1">&amp;ui=</span><span class="si">{</span><span class="n">engine_language</span><span class="si">}</span><span class="s1">&#39;</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s2">&quot;bing 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="request">
<a class="viewcode-back" href="../../../dev/engines/online/bing.html#searx.engines.bing.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;Assemble a Bing-Web request.&quot;&quot;&quot;</span>
<span class="n">engine_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="c1"># type: ignore</span>
<span class="n">engine_language</span> <span class="o">=</span> <span class="n">traits</span><span class="o">.</span><span class="n">get_language</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="s1">&#39;en&#39;</span><span class="p">)</span> <span class="c1"># type: ignore</span>
<span class="n">set_bing_cookies</span><span class="p">(</span><span class="n">params</span><span class="p">,</span> <span class="n">engine_language</span><span class="p">,</span> <span class="n">engine_region</span><span class="p">)</span>
<span class="n">page</span> <span class="o">=</span> <span class="n">params</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;pageno&#39;</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">query_params</span> <span class="o">=</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="c1"># if arg &#39;pq&#39; is missed, somtimes on page 4 we get results from page 1,</span>
<span class="c1"># don&#39;t ask why it is only sometimes / its M$ and they have never been</span>
<span class="c1"># deterministic ;)</span>
<span class="s1">&#39;pq&#39;</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span>
<span class="p">}</span>
<span class="c1"># To get correct page, arg first and this arg FORM is needed, the value PERE</span>
<span class="c1"># is on page 2, on page 3 its PERE1 and on page 4 its PERE2 .. and so forth.</span>
<span class="c1"># The &#39;first&#39; arg should never send on page 1.</span>
<span class="k">if</span> <span class="n">page</span> <span class="o">&gt;</span> <span class="mi">1</span><span class="p">:</span>
<span class="n">query_params</span><span class="p">[</span><span class="s1">&#39;first&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">_page_offset</span><span class="p">(</span><span class="n">page</span><span class="p">)</span> <span class="c1"># see also arg FORM</span>
<span class="k">if</span> <span class="n">page</span> <span class="o">==</span> <span class="mi">2</span><span class="p">:</span>
<span class="n">query_params</span><span class="p">[</span><span class="s1">&#39;FORM&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;PERE&#39;</span>
<span class="k">elif</span> <span class="n">page</span> <span class="o">&gt;</span> <span class="mi">2</span><span class="p">:</span>
<span class="n">query_params</span><span class="p">[</span><span class="s1">&#39;FORM&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;PERE</span><span class="si">%s</span><span class="s1">&#39;</span> <span class="o">%</span> <span class="p">(</span><span class="n">page</span> <span class="o">-</span> <span class="mi">2</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="sa">f</span><span class="s1">&#39;</span><span class="si">{</span><span class="n">base_url</span><span class="si">}</span><span class="s1">?</span><span class="si">{</span><span class="n">urlencode</span><span class="p">(</span><span class="n">query_params</span><span class="p">)</span><span class="si">}</span><span class="s1">&#39;</span>
<span class="k">if</span> <span class="n">params</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;time_range&#39;</span><span class="p">):</span>
<span class="n">unix_day</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span> <span class="o">/</span> <span class="mi">86400</span><span class="p">)</span>
<span class="n">time_ranges</span> <span class="o">=</span> <span class="p">{</span><span class="s1">&#39;day&#39;</span><span class="p">:</span> <span class="s1">&#39;1&#39;</span><span class="p">,</span> <span class="s1">&#39;week&#39;</span><span class="p">:</span> <span class="s1">&#39;2&#39;</span><span class="p">,</span> <span class="s1">&#39;month&#39;</span><span class="p">:</span> <span class="s1">&#39;3&#39;</span><span class="p">,</span> <span class="s1">&#39;year&#39;</span><span class="p">:</span> <span class="sa">f</span><span class="s1">&#39;5_</span><span class="si">{</span><span class="n">unix_day</span><span class="o">-</span><span class="mi">365</span><span class="si">}</span><span class="s1">_</span><span class="si">{</span><span class="n">unix_day</span><span class="si">}</span><span class="s1">&#39;</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="sa">f</span><span class="s1">&#39;&amp;filters=ex1:&quot;ez</span><span class="si">{</span><span class="n">time_ranges</span><span class="p">[</span><span class="n">params</span><span class="p">[</span><span class="s2">&quot;time_range&quot;</span><span class="p">]]</span><span class="si">}</span><span class="s1">&quot;&#39;</span>
<span class="k">return</span> <span class="n">params</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="c1"># pylint: disable=too-many-locals</span>
<span class="n">results</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">result_len</span> <span class="o">=</span> <span class="mi">0</span>
<span class="n">dom</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="c1"># parse results again if nothing is found yet</span>
<span class="k">for</span> <span class="n">result</span> <span class="ow">in</span> <span class="n">eval_xpath_list</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s1">&#39;//ol[@id=&quot;b_results&quot;]/li[contains(@class, &quot;b_algo&quot;)]&#39;</span><span class="p">):</span>
<span class="n">link</span> <span class="o">=</span> <span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//h2/a&#39;</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">link</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">url</span> <span class="o">=</span> <span class="n">link</span><span class="o">.</span><span class="n">attrib</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;href&#39;</span><span class="p">)</span>
<span class="n">title</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">link</span><span class="p">)</span>
<span class="n">content</span> <span class="o">=</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">result</span><span class="p">,</span> <span class="s1">&#39;.//p&#39;</span><span class="p">)</span>
<span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">content</span><span class="p">:</span>
<span class="c1"># Make sure that the element is free of:</span>
<span class="c1"># &lt;span class=&quot;algoSlug_icon&quot; # data-priority=&quot;2&quot;&gt;Web&lt;/span&gt;</span>
<span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">p</span><span class="o">.</span><span class="n">xpath</span><span class="p">(</span><span class="s1">&#39;.//span[@class=&quot;algoSlug_icon&quot;]&#39;</span><span class="p">):</span>
<span class="n">e</span><span class="o">.</span><span class="n">getparent</span><span class="p">()</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
<span class="n">content</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">content</span><span class="p">)</span>
<span class="c1"># get the real URL</span>
<span class="k">if</span> <span class="n">url</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s1">&#39;https://www.bing.com/ck/a?&#39;</span><span class="p">):</span>
<span class="c1"># get the first value of u parameter</span>
<span class="n">url_query</span> <span class="o">=</span> <span class="n">urlparse</span><span class="p">(</span><span class="n">url</span><span class="p">)</span><span class="o">.</span><span class="n">query</span>
<span class="n">parsed_url_query</span> <span class="o">=</span> <span class="n">parse_qs</span><span class="p">(</span><span class="n">url_query</span><span class="p">)</span>
<span class="n">param_u</span> <span class="o">=</span> <span class="n">parsed_url_query</span><span class="p">[</span><span class="s2">&quot;u&quot;</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span>
<span class="c1"># remove &quot;a1&quot; in front</span>
<span class="n">encoded_url</span> <span class="o">=</span> <span class="n">param_u</span><span class="p">[</span><span class="mi">2</span><span class="p">:]</span>
<span class="c1"># add padding</span>
<span class="n">encoded_url</span> <span class="o">=</span> <span class="n">encoded_url</span> <span class="o">+</span> <span class="s1">&#39;=&#39;</span> <span class="o">*</span> <span class="p">(</span><span class="o">-</span><span class="nb">len</span><span class="p">(</span><span class="n">encoded_url</span><span class="p">)</span> <span class="o">%</span> <span class="mi">4</span><span class="p">)</span>
<span class="c1"># decode base64 encoded URL</span>
<span class="n">url</span> <span class="o">=</span> <span class="n">base64</span><span class="o">.</span><span class="n">urlsafe_b64decode</span><span class="p">(</span><span class="n">encoded_url</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">()</span>
<span class="c1"># append result</span>
<span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">({</span><span class="s1">&#39;url&#39;</span><span class="p">:</span> <span class="n">url</span><span class="p">,</span> <span class="s1">&#39;title&#39;</span><span class="p">:</span> <span class="n">title</span><span class="p">,</span> <span class="s1">&#39;content&#39;</span><span class="p">:</span> <span class="n">content</span><span class="p">})</span>
<span class="c1"># get number_of_results</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">result_len_container</span> <span class="o">=</span> <span class="s2">&quot;&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s1">&#39;//span[@class=&quot;sb_count&quot;]//text()&#39;</span><span class="p">))</span>
<span class="k">if</span> <span class="s2">&quot;-&quot;</span> <span class="ow">in</span> <span class="n">result_len_container</span><span class="p">:</span>
<span class="c1"># Remove the part &quot;from-to&quot; for paginated request ...</span>
<span class="n">result_len_container</span> <span class="o">=</span> <span class="n">result_len_container</span><span class="p">[</span><span class="n">result_len_container</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s2">&quot;-&quot;</span><span class="p">)</span> <span class="o">*</span> <span class="mi">2</span> <span class="o">+</span> <span class="mi">2</span> <span class="p">:]</span>
<span class="n">result_len_container</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">sub</span><span class="p">(</span><span class="s1">&#39;[^0-9]&#39;</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">,</span> <span class="n">result_len_container</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">result_len_container</span><span class="p">)</span> <span class="o">&gt;</span> <span class="mi">0</span><span class="p">:</span>
<span class="n">result_len</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">result_len_container</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">Exception</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> <span class="c1"># pylint: disable=broad-except</span>
<span class="n">logger</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s1">&#39;result error :</span><span class="se">\n</span><span class="si">%s</span><span class="s1">&#39;</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span>
<span class="k">if</span> <span class="n">result_len</span> <span class="ow">and</span> <span class="n">_page_offset</span><span class="p">(</span><span class="n">resp</span><span class="o">.</span><span class="n">search_params</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;pageno&quot;</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span> <span class="o">&gt;</span> <span class="n">result_len</span><span class="p">:</span>
<span class="c1"># Avoid reading more results than avalaible.</span>
<span class="c1"># For example, if there is 100 results from some search and we try to get results from 120 to 130,</span>
<span class="c1"># Bing will send back the results from 0 to 10 and no error.</span>
<span class="c1"># If we compare results count with the first parameter of the request we can avoid this &quot;invalid&quot; results.</span>
<span class="k">return</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="s1">&#39;number_of_results&#39;</span><span class="p">:</span> <span class="n">result_len</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/bing.html#searx.engines.bing.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 and regions from Bing-Web.&quot;&quot;&quot;</span>
<span class="c1"># pylint: disable=import-outside-toplevel</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="n">resp</span> <span class="o">=</span> <span class="n">get</span><span class="p">(</span><span class="s2">&quot;https://www.bing.com/account/general&quot;</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 bing is not OK.&quot;</span><span class="p">)</span>
<span class="n">dom</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="c1"># type: ignore</span>
<span class="c1"># languages</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="p">[</span><span class="s1">&#39;zh&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;zh-hans&#39;</span>
<span class="n">map_lang</span> <span class="o">=</span> <span class="p">{</span><span class="s1">&#39;prs&#39;</span><span class="p">:</span> <span class="s1">&#39;fa-AF&#39;</span><span class="p">,</span> <span class="s1">&#39;en&#39;</span><span class="p">:</span> <span class="s1">&#39;en-us&#39;</span><span class="p">}</span>
<span class="n">bing_ui_lang_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="c1"># HINT: this list probably needs to be supplemented</span>
<span class="s1">&#39;en&#39;</span><span class="p">:</span> <span class="s1">&#39;us&#39;</span><span class="p">,</span> <span class="c1"># en --&gt; en-us</span>
<span class="s1">&#39;da&#39;</span><span class="p">:</span> <span class="s1">&#39;dk&#39;</span><span class="p">,</span> <span class="c1"># da --&gt; da-dk</span>
<span class="p">}</span>
<span class="k">for</span> <span class="n">href</span> <span class="ow">in</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s1">&#39;//div[@id=&quot;language-section&quot;]//li/a/@href&#39;</span><span class="p">):</span>
<span class="n">eng_lang</span> <span class="o">=</span> <span class="n">parse_qs</span><span class="p">(</span><span class="n">urlparse</span><span class="p">(</span><span class="n">href</span><span class="p">)</span><span class="o">.</span><span class="n">query</span><span class="p">)[</span><span class="s1">&#39;setlang&#39;</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span>
<span class="n">babel_lang</span> <span class="o">=</span> <span class="n">map_lang</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">try</span><span class="p">:</span>
<span class="n">sxng_tag</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_lang</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">&#39;-&#39;</span><span class="p">,</span> <span class="s1">&#39;_&#39;</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">) is unknown by babel&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="n">babel_lang</span><span class="p">))</span>
<span class="k">continue</span>
<span class="c1"># Language (e.g. &#39;en&#39; or &#39;de&#39;) from https://www.bing.com/account/general</span>
<span class="c1"># is converted by bing to &#39;en-us&#39; or &#39;de-de&#39;. But only if there is not</span>
<span class="c1"># already a &#39;-&#39; delemitter in the language. For instance &#39;pt-PT&#39; --&gt;</span>
<span class="c1"># &#39;pt-pt&#39; and &#39;pt-br&#39; --&gt; &#39;pt-br&#39;</span>
<span class="n">bing_ui_lang</span> <span class="o">=</span> <span class="n">eng_lang</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">if</span> <span class="s1">&#39;-&#39;</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">bing_ui_lang</span><span class="p">:</span>
<span class="n">bing_ui_lang</span> <span class="o">=</span> <span class="n">bing_ui_lang</span> <span class="o">+</span> <span class="s1">&#39;-&#39;</span> <span class="o">+</span> <span class="n">bing_ui_lang_map</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">bing_ui_lang</span><span class="p">,</span> <span class="n">bing_ui_lang</span><span class="p">)</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">bing_ui_lang</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;CONFLICT: babel </span><span class="si">{</span><span class="n">sxng_tag</span><span class="si">}</span><span class="s2"> --&gt; </span><span class="si">{</span><span class="n">conflict</span><span class="si">}</span><span class="s2">, </span><span class="si">{</span><span class="n">bing_ui_lang</span><span class="si">}</span><span class="s2">&quot;</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">bing_ui_lang</span>
<span class="c1"># regions (aka &quot;market codes&quot;)</span>
<span class="n">engine_traits</span><span class="o">.</span><span class="n">regions</span><span class="p">[</span><span class="s1">&#39;zh-CN&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="s1">&#39;zh-cn&#39;</span>
<span class="n">map_market_codes</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;zh-hk&#39;</span><span class="p">:</span> <span class="s1">&#39;en-hk&#39;</span><span class="p">,</span> <span class="c1"># not sure why, but at M$ this is the market code for Hongkong</span>
<span class="p">}</span>
<span class="k">for</span> <span class="n">href</span> <span class="ow">in</span> <span class="n">eval_xpath</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="s1">&#39;//div[@id=&quot;region-section&quot;]//li/a/@href&#39;</span><span class="p">):</span>
<span class="n">cc_tag</span> <span class="o">=</span> <span class="n">parse_qs</span><span class="p">(</span><span class="n">urlparse</span><span class="p">(</span><span class="n">href</span><span class="p">)</span><span class="o">.</span><span class="n">query</span><span class="p">)[</span><span class="s1">&#39;cc&#39;</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span>
<span class="k">if</span> <span class="n">cc_tag</span> <span class="o">==</span> <span class="s1">&#39;clear&#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="n">cc_tag</span>
<span class="k">continue</span>
<span class="c1"># add market codes from official languages of the country ..</span>
<span class="k">for</span> <span class="n">lang_tag</span> <span class="ow">in</span> <span class="n">babel</span><span class="o">.</span><span class="n">languages</span><span class="o">.</span><span class="n">get_official_languages</span><span class="p">(</span><span class="n">cc_tag</span><span class="p">,</span> <span class="n">de_facto</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span>
<span class="k">if</span> <span class="n">lang_tag</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">engine_traits</span><span class="o">.</span><span class="n">languages</span><span class="o">.</span><span class="n">keys</span><span class="p">():</span>
<span class="c1"># print(&quot;ignore lang: %s &lt;-- %s&quot; % (cc_tag, lang_tag))</span>
<span class="k">continue</span>
<span class="n">lang_tag</span> <span class="o">=</span> <span class="n">lang_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="mi">0</span><span class="p">]</span> <span class="c1"># zh_Hant --&gt; zh</span>
<span class="n">market_code</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">lang_tag</span><span class="si">}</span><span class="s2">-</span><span class="si">{</span><span class="n">cc_tag</span><span class="si">}</span><span class="s2">&quot;</span> <span class="c1"># zh-tw</span>
<span class="n">market_code</span> <span class="o">=</span> <span class="n">map_market_codes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">market_code</span><span class="p">,</span> <span class="n">market_code</span><span class="p">)</span>
<span class="n">sxng_tag</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="s1">&#39;</span><span class="si">%s</span><span class="s1">_</span><span class="si">%s</span><span class="s1">&#39;</span> <span class="o">%</span> <span class="p">(</span><span class="n">lang_tag</span><span class="p">,</span> <span class="n">cc_tag</span><span class="o">.</span><span class="n">upper</span><span class="p">())))</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">market_code</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">market_code</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">market_code</span></div>
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