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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.bing_news</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;Bing-News: description see :py:obj:`searx.engines.bing`.</span>
<span class="sd">.. hint::</span>
<span class="sd"> Bing News is *different* in some ways!</span>
<span class="sd">&quot;&quot;&quot;</span>
<span class="c1"># pylint: disable=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">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlencode</span>
<span class="kn">from</span> <span class="nn">lxml</span> <span class="kn">import</span> <span class="n">html</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.enginelib.traits</span> <span class="kn">import</span> <span class="n">EngineTraits</span>
<span class="kn">from</span> <span class="nn">searx.engines.bing</span> <span class="kn">import</span> <span class="n">set_bing_cookies</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="c1"># about</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/news&#39;</span><span class="p">,</span>
<span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="s1">&#39;Q2878637&#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-news-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;RSS&#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;news&#39;</span><span class="p">]</span>
<span class="n">paging</span> <span class="o">=</span> <span class="kc">True</span>
<span class="sd">&quot;&quot;&quot;If go through the pages and there are actually no new results for another</span>
<span class="sd">page, then bing returns the results from the last page again.&quot;&quot;&quot;</span>
<span class="n">time_range_support</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">time_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="s1">&#39;day&#39;</span><span class="p">:</span> <span class="s1">&#39;interval=&quot;4&quot;&#39;</span><span class="p">,</span>
<span class="s1">&#39;week&#39;</span><span class="p">:</span> <span class="s1">&#39;interval=&quot;7&quot;&#39;</span><span class="p">,</span>
<span class="s1">&#39;month&#39;</span><span class="p">:</span> <span class="s1">&#39;interval=&quot;9&quot;&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="sd">&quot;&quot;&quot;A string &#39;4&#39; means *last hour*. We use *last hour* for ``day`` here since the</span>
<span class="sd">difference of *last day* and *last week* in the result list is just marginally.</span>
<span class="sd">Bing does not have news range ``year`` / we use ``month`` instead.&quot;&quot;&quot;</span>
<span class="n">base_url</span> <span class="o">=</span> <span class="s1">&#39;https://www.bing.com/news/infinitescrollajax&#39;</span>
<span class="sd">&quot;&quot;&quot;Bing (News) search URL&quot;&quot;&quot;</span>
<div class="viewcode-block" id="request">
<a class="viewcode-back" href="../../../dev/engines/online/bing.html#searx.engines.bing_news.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-News 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="c1"># build URL query</span>
<span class="c1">#</span>
<span class="c1"># example: https://www.bing.com/news/infinitescrollajax?q=london&amp;first=1</span>
<span class="n">page</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</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="o">-</span> <span class="mi">1</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="s1">&#39;InfiniteScroll&#39;</span><span class="p">:</span> <span class="mi">1</span><span class="p">,</span>
<span class="c1"># to simplify the page count lets use the default of 10 images per page</span>
<span class="s1">&#39;first&#39;</span><span class="p">:</span> <span class="n">page</span> <span class="o">*</span> <span class="mi">10</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span>
<span class="s1">&#39;SFX&#39;</span><span class="p">:</span> <span class="n">page</span><span class="p">,</span>
<span class="s1">&#39;form&#39;</span><span class="p">:</span> <span class="s1">&#39;PTFTNR&#39;</span><span class="p">,</span>
<span class="s1">&#39;setlang&#39;</span><span class="p">:</span> <span class="n">engine_region</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="s1">&#39;cc&#39;</span><span class="p">:</span> <span class="n">engine_region</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="o">-</span><span class="mi">1</span><span class="p">],</span>
<span class="p">}</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="n">query_params</span><span class="p">[</span><span class="s1">&#39;qft&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">time_map</span><span class="o">.</span><span class="n">get</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="s1">&#39;interval=&quot;9&quot;&#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="n">base_url</span> <span class="o">+</span> <span class="s1">&#39;?&#39;</span> <span class="o">+</span> <span class="n">urlencode</span><span class="p">(</span><span class="n">query_params</span><span class="p">)</span>
<span class="k">return</span> <span class="n">params</span></div>
<div class="viewcode-block" id="response">
<a class="viewcode-back" href="../../../dev/engines/online/bing.html#searx.engines.bing_news.response">[docs]</a>
<span class="k">def</span> <span class="nf">response</span><span class="p">(</span><span class="n">resp</span><span class="p">):</span>
<span class="w"> </span><span class="sd">&quot;&quot;&quot;Get response from Bing-Video&quot;&quot;&quot;</span>
<span class="n">results</span> <span class="o">=</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="ow">or</span> <span class="ow">not</span> <span class="n">resp</span><span class="o">.</span><span class="n">text</span><span class="p">:</span>
<span class="k">return</span> <span class="n">results</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="k">for</span> <span class="n">newsitem</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;//div[contains(@class, &quot;newsitem&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">newsitem</span><span class="p">,</span> <span class="s1">&#39;.//a[@class=&quot;title&quot;]&#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">extract_text</span><span class="p">(</span><span class="n">eval_xpath</span><span class="p">(</span><span class="n">newsitem</span><span class="p">,</span> <span class="s1">&#39;.//div[@class=&quot;snippet&quot;]&#39;</span><span class="p">))</span>
<span class="n">metadata</span> <span class="o">=</span> <span class="p">[]</span>
<span class="n">source</span> <span class="o">=</span> <span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">newsitem</span><span class="p">,</span> <span class="s1">&#39;.//div[contains(@class, &quot;source&quot;)]&#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">source</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">for</span> <span class="n">item</span> <span class="ow">in</span> <span class="p">(</span>
<span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="s1">&#39;.//span[@aria-label]/@aria-label&#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="c1"># eval_xpath_getindex(source, &#39;.//a&#39;, 0, None),</span>
<span class="c1"># eval_xpath_getindex(source, &#39;./div/span&#39;, 3, None),</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;data-author&#39;</span><span class="p">),</span>
<span class="p">):</span>
<span class="k">if</span> <span class="n">item</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">t</span> <span class="o">=</span> <span class="n">extract_text</span><span class="p">(</span><span class="n">item</span><span class="p">)</span>
<span class="k">if</span> <span class="n">t</span> <span class="ow">and</span> <span class="n">t</span><span class="o">.</span><span class="n">strip</span><span class="p">():</span>
<span class="n">metadata</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">t</span><span class="o">.</span><span class="n">strip</span><span class="p">())</span>
<span class="n">metadata</span> <span class="o">=</span> <span class="s1">&#39; | &#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">metadata</span><span class="p">)</span>
<span class="n">thumbnail</span> <span class="o">=</span> <span class="kc">None</span>
<span class="n">imagelink</span> <span class="o">=</span> <span class="n">eval_xpath_getindex</span><span class="p">(</span><span class="n">newsitem</span><span class="p">,</span> <span class="s1">&#39;.//a[@class=&quot;imagelink&quot;]//img&#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">imagelink</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="n">thumbnail</span> <span class="o">=</span> <span class="n">imagelink</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;src&#39;</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">thumbnail</span><span class="o">.</span><span class="n">startswith</span><span class="p">(</span><span class="s2">&quot;https://www.bing.com&quot;</span><span class="p">):</span>
<span class="n">thumbnail</span> <span class="o">=</span> <span class="s1">&#39;https://www.bing.com/&#39;</span> <span class="o">+</span> <span class="n">thumbnail</span>
<span class="n">results</span><span class="o">.</span><span class="n">append</span><span class="p">(</span>
<span class="p">{</span>
<span class="s1">&#39;url&#39;</span><span class="p">:</span> <span class="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="s1">&#39;thumbnail&#39;</span><span class="p">:</span> <span class="n">thumbnail</span><span class="p">,</span>
<span class="s1">&#39;metadata&#39;</span><span class="p">:</span> <span class="n">metadata</span><span class="p">,</span>
<span class="p">}</span>
<span class="p">)</span>
<span class="k">return</span> <span class="n">results</span></div>
<div class="viewcode-block" id="fetch_traits">
<a class="viewcode-back" href="../../../dev/engines/online/bing.html#searx.engines.bing_news.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-News.&quot;&quot;&quot;</span>
<span class="c1"># pylint: disable=import-outside-toplevel</span>
<span class="kn">from</span> <span class="nn">searx.engines.bing</span> <span class="kn">import</span> <span class="n">fetch_traits</span> <span class="k">as</span> <span class="n">_f</span>
<span class="n">_f</span><span class="p">(</span><span class="n">engine_traits</span><span class="p">)</span>
<span class="c1"># fix market codes not known by bing news:</span>
<span class="c1"># In bing the market code &#39;zh-cn&#39; exists, but there is no &#39;news&#39; category in</span>
<span class="c1"># bing for this market. Alternatively we use the the market code from Honk</span>
<span class="c1"># Kong. Even if this is not correct, it is better than having no hits at</span>
<span class="c1"># all, or sending false queries to bing that could raise the suspicion of a</span>
<span class="c1"># bot.</span>
<span class="c1"># HINT: &#39;en-hk&#39; is the region code it does not indicate the language en!!</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;en-hk&#39;</span></div>
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