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  <h1>Source code for searx.search.processors.online_currency</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;Processors for engine-type: ``online_currency``</span>

<span class="sd">&quot;&quot;&quot;</span>

<span class="kn">import</span><span class="w"> </span><span class="nn">unicodedata</span>
<span class="kn">import</span><span class="w"> </span><span class="nn">re</span>

<span class="kn">from</span><span class="w"> </span><span class="nn">searx.data</span><span class="w"> </span><span class="kn">import</span> <span class="n">CURRENCIES</span>
<span class="kn">from</span><span class="w"> </span><span class="nn">.online</span><span class="w"> </span><span class="kn">import</span> <span class="n">OnlineProcessor</span>

<span class="n">parser_re</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">compile</span><span class="p">(</span><span class="s1">&#39;.*?(</span><span class="se">\\</span><span class="s1">d+(?:</span><span class="se">\\</span><span class="s1">.</span><span class="se">\\</span><span class="s1">d+)?) ([^.0-9]+) (?:in|to) ([^.0-9]+)&#39;</span><span class="p">,</span> <span class="n">re</span><span class="o">.</span><span class="n">I</span><span class="p">)</span>


<span class="k">def</span><span class="w"> </span><span class="nf">normalize_name</span><span class="p">(</span><span class="n">name</span><span class="p">):</span>
    <span class="n">name</span> <span class="o">=</span> <span class="n">name</span><span class="o">.</span><span class="n">lower</span><span class="p">()</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="o">.</span><span class="n">rstrip</span><span class="p">(</span><span class="s1">&#39;s&#39;</span><span class="p">)</span>
    <span class="n">name</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; +&#39;</span><span class="p">,</span> <span class="s1">&#39; &#39;</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span>
    <span class="k">return</span> <span class="n">unicodedata</span><span class="o">.</span><span class="n">normalize</span><span class="p">(</span><span class="s1">&#39;NFKD&#39;</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>


<span class="k">def</span><span class="w"> </span><span class="nf">name_to_iso4217</span><span class="p">(</span><span class="n">name</span><span class="p">):</span>
    <span class="n">name</span> <span class="o">=</span> <span class="n">normalize_name</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
    <span class="n">currency</span> <span class="o">=</span> <span class="n">CURRENCIES</span><span class="p">[</span><span class="s1">&#39;names&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="p">[</span><span class="n">name</span><span class="p">])</span>
    <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">currency</span><span class="p">,</span> <span class="nb">str</span><span class="p">):</span>
        <span class="k">return</span> <span class="n">currency</span>
    <span class="k">return</span> <span class="n">currency</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>


<span class="k">def</span><span class="w"> </span><span class="nf">iso4217_to_name</span><span class="p">(</span><span class="n">iso4217</span><span class="p">,</span> <span class="n">language</span><span class="p">):</span>
    <span class="k">return</span> <span class="n">CURRENCIES</span><span class="p">[</span><span class="s1">&#39;iso4217&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">iso4217</span><span class="p">,</span> <span class="p">{})</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">language</span><span class="p">,</span> <span class="n">iso4217</span><span class="p">)</span>


<div class="viewcode-block" id="OnlineCurrencyProcessor">
<a class="viewcode-back" href="../../../../src/searx.search.processors.html#searx.search.processors.online_currency.OnlineCurrencyProcessor">[docs]</a>
<span class="k">class</span><span class="w"> </span><span class="nc">OnlineCurrencyProcessor</span><span class="p">(</span><span class="n">OnlineProcessor</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;Processor class used by ``online_currency`` engines.&quot;&quot;&quot;</span>

    <span class="n">engine_type</span> <span class="o">=</span> <span class="s1">&#39;online_currency&#39;</span>

<div class="viewcode-block" id="OnlineCurrencyProcessor.get_params">
<a class="viewcode-back" href="../../../../src/searx.search.processors.html#searx.search.processors.online_currency.OnlineCurrencyProcessor.get_params">[docs]</a>
    <span class="k">def</span><span class="w"> </span><span class="nf">get_params</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">search_query</span><span class="p">,</span> <span class="n">engine_category</span><span class="p">):</span>
<span class="w">        </span><span class="sd">&quot;&quot;&quot;Returns a set of :ref:`request params &lt;engine request online_currency&gt;`</span>
<span class="sd">        or ``None`` if search query does not match to :py:obj:`parser_re`.&quot;&quot;&quot;</span>

        <span class="n">params</span> <span class="o">=</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">get_params</span><span class="p">(</span><span class="n">search_query</span><span class="p">,</span> <span class="n">engine_category</span><span class="p">)</span>
        <span class="k">if</span> <span class="n">params</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
            <span class="k">return</span> <span class="kc">None</span>

        <span class="n">m</span> <span class="o">=</span> <span class="n">parser_re</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">search_query</span><span class="o">.</span><span class="n">query</span><span class="p">)</span>
        <span class="k">if</span> <span class="ow">not</span> <span class="n">m</span><span class="p">:</span>
            <span class="k">return</span> <span class="kc">None</span>

        <span class="n">amount_str</span><span class="p">,</span> <span class="n">from_currency</span><span class="p">,</span> <span class="n">to_currency</span> <span class="o">=</span> <span class="n">m</span><span class="o">.</span><span class="n">groups</span><span class="p">()</span>
        <span class="k">try</span><span class="p">:</span>
            <span class="n">amount</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">amount_str</span><span class="p">)</span>
        <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span>
            <span class="k">return</span> <span class="kc">None</span>
        <span class="n">from_currency</span> <span class="o">=</span> <span class="n">name_to_iso4217</span><span class="p">(</span><span class="n">from_currency</span><span class="o">.</span><span class="n">strip</span><span class="p">())</span>
        <span class="n">to_currency</span> <span class="o">=</span> <span class="n">name_to_iso4217</span><span class="p">(</span><span class="n">to_currency</span><span class="o">.</span><span class="n">strip</span><span class="p">())</span>

        <span class="n">params</span><span class="p">[</span><span class="s1">&#39;amount&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">amount</span>
        <span class="n">params</span><span class="p">[</span><span class="s1">&#39;from&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">from_currency</span>
        <span class="n">params</span><span class="p">[</span><span class="s1">&#39;to&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">to_currency</span>
        <span class="n">params</span><span class="p">[</span><span class="s1">&#39;from_name&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">iso4217_to_name</span><span class="p">(</span><span class="n">from_currency</span><span class="p">,</span> <span class="s1">&#39;en&#39;</span><span class="p">)</span>
        <span class="n">params</span><span class="p">[</span><span class="s1">&#39;to_name&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="n">iso4217_to_name</span><span class="p">(</span><span class="n">to_currency</span><span class="p">,</span> <span class="s1">&#39;en&#39;</span><span class="p">)</span>
        <span class="k">return</span> <span class="n">params</span></div>


    <span class="k">def</span><span class="w"> </span><span class="nf">get_default_tests</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
        <span class="n">tests</span> <span class="o">=</span> <span class="p">{}</span>

        <span class="n">tests</span><span class="p">[</span><span class="s1">&#39;currency&#39;</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span>
            <span class="s1">&#39;matrix&#39;</span><span class="p">:</span> <span class="p">{</span><span class="s1">&#39;query&#39;</span><span class="p">:</span> <span class="s1">&#39;1337 usd in rmb&#39;</span><span class="p">},</span>
            <span class="s1">&#39;result_container&#39;</span><span class="p">:</span> <span class="p">[</span><span class="s1">&#39;has_answer&#39;</span><span class="p">],</span>
        <span class="p">}</span>

        <span class="k">return</span> <span class="n">tests</span></div>

</pre></div>

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