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  <h1>Source code for searx.engines.radio_browser</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;Search radio stations from RadioBrowser by `Advanced station search API`_.</span>

<span class="sd">.. _Advanced station search API:</span>
<span class="sd">   https://de1.api.radio-browser.info/#Advanced_station_search</span>

<span class="sd">&quot;&quot;&quot;</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">babel</span>
<span class="kn">from</span> <span class="nn">flask_babel</span> <span class="kn">import</span> <span class="n">gettext</span>

<span class="kn">from</span> <span class="nn">searx.network</span> <span class="kn">import</span> <span class="n">get</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.locales</span> <span class="kn">import</span> <span class="n">language_tag</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.radio-browser.info/&#39;</span><span class="p">,</span>
    <span class="s2">&quot;wikidata_id&quot;</span><span class="p">:</span> <span class="s1">&#39;Q111664849&#39;</span><span class="p">,</span>
    <span class="s2">&quot;official_api_documentation&quot;</span><span class="p">:</span> <span class="s1">&#39;https://de1.api.radio-browser.info/&#39;</span><span class="p">,</span>
    <span class="s2">&quot;use_official_api&quot;</span><span class="p">:</span> <span class="kc">True</span><span class="p">,</span>
    <span class="s2">&quot;require_api_key&quot;</span><span class="p">:</span> <span class="kc">False</span><span class="p">,</span>
    <span class="s2">&quot;results&quot;</span><span class="p">:</span> <span class="s1">&#39;JSON&#39;</span><span class="p">,</span>
<span class="p">}</span>
<span class="n">paging</span> <span class="o">=</span> <span class="kc">True</span>
<span class="n">categories</span> <span class="o">=</span> <span class="p">[</span><span class="s1">&#39;music&#39;</span><span class="p">,</span> <span class="s1">&#39;radio&#39;</span><span class="p">]</span>

<span class="n">base_url</span> <span class="o">=</span> <span class="s2">&quot;https://de1.api.radio-browser.info&quot;</span>  <span class="c1"># see https://api.radio-browser.info/ for all nodes</span>
<span class="n">number_of_results</span> <span class="o">=</span> <span class="mi">10</span>

<span class="n">station_filters</span> <span class="o">=</span> <span class="p">[]</span>  <span class="c1"># [&#39;countrycode&#39;, &#39;language&#39;]</span>
<span class="sd">&quot;&quot;&quot;A list of filters to be applied to the search of radio stations.  By default</span>
<span class="sd">none filters are applied. Valid filters are:</span>

<span class="sd">``language``</span>
<span class="sd">  Filter stations by selected language.  For instance the ``de`` from ``:de-AU``</span>
<span class="sd">  will be translated to `german` and used in the argument ``language=``.</span>

<span class="sd">``countrycode``</span>
<span class="sd">  Filter stations by selected country.  The 2-digit countrycode of the station</span>
<span class="sd">  comes from the region the user selected.  For instance ``:de-AU`` will filter</span>
<span class="sd">  out all stations not in ``AU``.</span>

<span class="sd">.. note::</span>

<span class="sd">   RadioBrowser has registered a lot of languages and countrycodes unknown to</span>
<span class="sd">   :py:obj:`babel` and note that when searching for radio stations, users are</span>
<span class="sd">   more likely to search by name than by region or language.</span>

<span class="sd">&quot;&quot;&quot;</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">args</span> <span class="o">=</span> <span class="p">{</span>
        <span class="s1">&#39;name&#39;</span><span class="p">:</span> <span class="n">query</span><span class="p">,</span>
        <span class="s1">&#39;order&#39;</span><span class="p">:</span> <span class="s1">&#39;votes&#39;</span><span class="p">,</span>
        <span class="s1">&#39;offset&#39;</span><span class="p">:</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="n">number_of_results</span><span class="p">,</span>
        <span class="s1">&#39;limit&#39;</span><span class="p">:</span> <span class="n">number_of_results</span><span class="p">,</span>
        <span class="s1">&#39;hidebroken&#39;</span><span class="p">:</span> <span class="s1">&#39;true&#39;</span><span class="p">,</span>
        <span class="s1">&#39;reverse&#39;</span><span class="p">:</span> <span class="s1">&#39;true&#39;</span><span class="p">,</span>
    <span class="p">}</span>

    <span class="k">if</span> <span class="s1">&#39;language&#39;</span> <span class="ow">in</span> <span class="n">station_filters</span><span class="p">:</span>
        <span class="n">lang</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="c1"># type: ignore</span>
        <span class="k">if</span> <span class="n">lang</span><span class="p">:</span>
            <span class="n">args</span><span class="p">[</span><span class="s1">&#39;language&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">lang</span>

    <span class="k">if</span> <span class="s1">&#39;countrycode&#39;</span> <span class="ow">in</span> <span class="n">station_filters</span><span class="p">:</span>
        <span class="k">if</span> <span class="nb">len</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="o">.</span><span class="n">split</span><span class="p">(</span><span class="s1">&#39;-&#39;</span><span class="p">))</span> <span class="o">&gt;</span> <span class="mi">1</span><span class="p">:</span>
            <span class="n">countrycode</span> <span class="o">=</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">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="o">.</span><span class="n">upper</span><span class="p">()</span>
            <span class="k">if</span> <span class="n">countrycode</span> <span class="ow">in</span> <span class="n">traits</span><span class="o">.</span><span class="n">custom</span><span class="p">[</span><span class="s1">&#39;countrycodes&#39;</span><span class="p">]:</span>  <span class="c1"># type: ignore</span>
                <span class="n">args</span><span class="p">[</span><span class="s1">&#39;countrycode&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">countrycode</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="s2">&quot;</span><span class="si">{</span><span class="n">base_url</span><span class="si">}</span><span class="s2">/json/stations/search?</span><span class="si">{</span><span class="n">urlencode</span><span class="p">(</span><span class="n">args</span><span class="p">)</span><span class="si">}</span><span class="s2">&quot;</span>
    <span class="k">return</span> <span class="n">params</span>


<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="n">results</span> <span class="o">=</span> <span class="p">[]</span>

    <span class="n">json_resp</span> <span class="o">=</span> <span class="n">resp</span><span class="o">.</span><span class="n">json</span><span class="p">()</span>

    <span class="k">for</span> <span class="n">result</span> <span class="ow">in</span> <span class="n">json_resp</span><span class="p">:</span>
        <span class="n">url</span> <span class="o">=</span> <span class="n">result</span><span class="p">[</span><span class="s1">&#39;homepage&#39;</span><span class="p">]</span>
        <span class="k">if</span> <span class="ow">not</span> <span class="n">url</span><span class="p">:</span>
            <span class="n">url</span> <span class="o">=</span> <span class="n">result</span><span class="p">[</span><span class="s1">&#39;url_resolved&#39;</span><span class="p">]</span>

        <span class="n">content</span> <span class="o">=</span> <span class="p">[]</span>
        <span class="n">tags</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">result</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;tags&#39;</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</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="k">if</span> <span class="n">tags</span><span class="p">:</span>
            <span class="n">content</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">tags</span><span class="p">)</span>
        <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="p">[</span><span class="s1">&#39;state&#39;</span><span class="p">,</span> <span class="s1">&#39;country&#39;</span><span class="p">]:</span>
            <span class="n">v</span> <span class="o">=</span> <span class="n">result</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
            <span class="k">if</span> <span class="n">v</span><span class="p">:</span>
                <span class="n">v</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
                <span class="n">content</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">v</span><span class="p">)</span>

        <span class="n">metadata</span> <span class="o">=</span> <span class="p">[]</span>
        <span class="n">codec</span> <span class="o">=</span> <span class="n">result</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;codec&#39;</span><span class="p">)</span>
        <span class="k">if</span> <span class="n">codec</span> <span class="ow">and</span> <span class="n">codec</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">!=</span> <span class="s1">&#39;unknown&#39;</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="sa">f</span><span class="s1">&#39;</span><span class="si">{</span><span class="n">codec</span><span class="si">}</span><span class="s1"> &#39;</span> <span class="o">+</span> <span class="n">gettext</span><span class="p">(</span><span class="s1">&#39;radio&#39;</span><span class="p">))</span>
        <span class="k">for</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span> <span class="ow">in</span> <span class="p">[</span>
            <span class="p">(</span><span class="n">gettext</span><span class="p">(</span><span class="s1">&#39;bitrate&#39;</span><span class="p">),</span> <span class="s1">&#39;bitrate&#39;</span><span class="p">),</span>
            <span class="p">(</span><span class="n">gettext</span><span class="p">(</span><span class="s1">&#39;votes&#39;</span><span class="p">),</span> <span class="s1">&#39;votes&#39;</span><span class="p">),</span>
            <span class="p">(</span><span class="n">gettext</span><span class="p">(</span><span class="s1">&#39;clicks&#39;</span><span class="p">),</span> <span class="s1">&#39;clickcount&#39;</span><span class="p">),</span>
        <span class="p">]:</span>
            <span class="n">v</span> <span class="o">=</span> <span class="n">result</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">y</span><span class="p">)</span>
            <span class="k">if</span> <span class="n">v</span><span class="p">:</span>
                <span class="n">v</span> <span class="o">=</span> <span class="nb">str</span><span class="p">(</span><span class="n">v</span><span class="p">)</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="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">x</span><span class="si">}</span><span class="s2"> </span><span class="si">{</span><span class="n">v</span><span class="si">}</span><span class="s2">&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;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">result</span><span class="p">[</span><span class="s1">&#39;name&#39;</span><span class="p">],</span>
                <span class="s1">&#39;thumbnail&#39;</span><span class="p">:</span> <span class="n">result</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;favicon&#39;</span><span class="p">,</span> <span class="s1">&#39;&#39;</span><span class="p">)</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s2">&quot;http://&quot;</span><span class="p">,</span> <span class="s2">&quot;https://&quot;</span><span class="p">),</span>
                <span class="s1">&#39;content&#39;</span><span class="p">:</span> <span class="s1">&#39; | &#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">content</span><span class="p">),</span>
                <span class="s1">&#39;metadata&#39;</span><span class="p">:</span> <span class="s1">&#39; | &#39;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">metadata</span><span class="p">),</span>
                <span class="s1">&#39;iframe_src&#39;</span><span class="p">:</span> <span class="n">result</span><span class="p">[</span><span class="s1">&#39;url_resolved&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s2">&quot;http://&quot;</span><span class="p">,</span> <span class="s2">&quot;https://&quot;</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/radio_browser.html#searx.engines.radio_browser.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 countrycodes from RadioBrowser</span>

<span class="sd">    - ``traits.languages``: `list of languages API`_</span>
<span class="sd">    - ``traits.custom[&#39;countrycodes&#39;]``: `list of countries API`_</span>

<span class="sd">    .. _list of countries API: https://de1.api.radio-browser.info/#List_of_countries</span>
<span class="sd">    .. _list of languages API: https://de1.api.radio-browser.info/#List_of_languages</span>
<span class="sd">    &quot;&quot;&quot;</span>
    <span class="c1"># pylint: disable=import-outside-toplevel</span>

    <span class="kn">from</span> <span class="nn">babel.core</span> <span class="kn">import</span> <span class="n">get_global</span>

    <span class="n">babel_reg_list</span> <span class="o">=</span> <span class="n">get_global</span><span class="p">(</span><span class="s2">&quot;territory_languages&quot;</span><span class="p">)</span><span class="o">.</span><span class="n">keys</span><span class="p">()</span>

    <span class="n">language_list</span> <span class="o">=</span> <span class="n">get</span><span class="p">(</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">/json/languages&#39;</span><span class="p">)</span><span class="o">.</span><span class="n">json</span><span class="p">()</span>  <span class="c1"># type: ignore</span>
    <span class="n">country_list</span> <span class="o">=</span> <span class="n">get</span><span class="p">(</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">/json/countries&#39;</span><span class="p">)</span><span class="o">.</span><span class="n">json</span><span class="p">()</span>  <span class="c1"># type: ignore</span>

    <span class="k">for</span> <span class="n">lang</span> <span class="ow">in</span> <span class="n">language_list</span><span class="p">:</span>

        <span class="n">babel_lang</span> <span class="o">=</span> <span class="n">lang</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s1">&#39;iso_639&#39;</span><span class="p">)</span>
        <span class="k">if</span> <span class="ow">not</span> <span class="n">babel_lang</span><span class="p">:</span>
            <span class="c1"># the language doesn&#39;t have any iso code, and hence can&#39;t be parsed</span>
            <span class="c1"># print(f&quot;ERROR: lang - no iso code in {lang}&quot;)</span>
            <span class="k">continue</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="p">,</span> <span class="n">sep</span><span class="o">=</span><span class="s2">&quot;-&quot;</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="c1"># print(f&quot;ERROR: language tag {babel_lang} is unknown by babel&quot;)</span>
            <span class="k">continue</span>

        <span class="n">eng_tag</span> <span class="o">=</span> <span class="n">lang</span><span class="p">[</span><span class="s1">&#39;name&#39;</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">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">languages</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="n">countrycodes</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
    <span class="k">for</span> <span class="n">region</span> <span class="ow">in</span> <span class="n">country_list</span><span class="p">:</span>
        <span class="c1"># country_list contains duplicates that differ only in upper/lower case</span>
        <span class="n">_reg</span> <span class="o">=</span> <span class="n">region</span><span class="p">[</span><span class="s1">&#39;iso_3166_1&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span>
        <span class="k">if</span> <span class="n">_reg</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">babel_reg_list</span><span class="p">:</span>
            <span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;ERROR: region tag </span><span class="si">{</span><span class="n">region</span><span class="p">[</span><span class="s1">&#39;iso_3166_1&#39;</span><span class="p">]</span><span class="si">}</span><span class="s2"> is unknown by babel&quot;</span><span class="p">)</span>
            <span class="k">continue</span>
        <span class="n">countrycodes</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">_reg</span><span class="p">)</span>

    <span class="n">countrycodes</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">countrycodes</span><span class="p">)</span>
    <span class="n">countrycodes</span><span class="o">.</span><span class="n">sort</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;countrycodes&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">countrycodes</span></div>

</pre></div>

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