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<h1>Source code for rdflib.plugins.serializers.nquads</h1><div class="highlight"><pre>
<span class="kn">import</span> <span class="nn">warnings</span>
<span class="kn">from</span> <span class="nn">rdflib.term</span> <span class="kn">import</span> <span class="n">Literal</span>
<span class="kn">from</span> <span class="nn">rdflib.serializer</span> <span class="kn">import</span> <span class="n">Serializer</span>
<span class="kn">from</span> <span class="nn">rdflib.py3compat</span> <span class="kn">import</span> <span class="n">b</span>
<span class="kn">from</span> <span class="nn">rdflib.plugins.serializers.nt</span> <span class="kn">import</span> <span class="n">_xmlcharref_encode</span><span class="p">,</span> <span class="n">_quoteLiteral</span>
<span class="n">__all__</span> <span class="o">=</span> <span class="p">[</span><span class="s">'NQuadsSerializer'</span><span class="p">]</span>
<div class="viewcode-block" id="NQuadsSerializer"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.serializers.html#rdflib.plugins.serializers.nquads.NQuadsSerializer">[docs]</a><span class="k">class</span> <span class="nc">NQuadsSerializer</span><span class="p">(</span><span class="n">Serializer</span><span class="p">):</span>
<div class="viewcode-block" id="NQuadsSerializer.__init__"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.serializers.html#rdflib.plugins.serializers.nquads.NQuadsSerializer.__init__">[docs]</a> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">store</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">store</span><span class="o">.</span><span class="n">context_aware</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">Exception</span><span class="p">(</span>
<span class="s">"NQuads serialization only makes "</span>
<span class="s">"sense for context-aware stores!"</span><span class="p">)</span>
<span class="nb">super</span><span class="p">(</span><span class="n">NQuadsSerializer</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="n">store</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="NQuadsSerializer.serialize"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.serializers.html#rdflib.plugins.serializers.nquads.NQuadsSerializer.serialize">[docs]</a> <span class="k">def</span> <span class="nf">serialize</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">stream</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">encoding</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="o">**</span><span class="n">args</span><span class="p">):</span>
<span class="k">if</span> <span class="n">base</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">warnings</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span><span class="s">"NQuadsSerializer does not support base."</span><span class="p">)</span>
<span class="k">if</span> <span class="n">encoding</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">warnings</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span><span class="s">"NQuadsSerializer does not use custom encoding."</span><span class="p">)</span>
<span class="n">encoding</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">encoding</span>
<span class="k">for</span> <span class="n">context</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">store</span><span class="o">.</span><span class="n">contexts</span><span class="p">():</span>
<span class="k">for</span> <span class="n">triple</span> <span class="ow">in</span> <span class="n">context</span><span class="p">:</span>
<span class="n">stream</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">_nq_row</span><span class="p">(</span>
<span class="n">triple</span><span class="p">,</span> <span class="n">context</span><span class="o">.</span><span class="n">identifier</span><span class="p">)</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="n">encoding</span><span class="p">,</span> <span class="s">"replace"</span><span class="p">))</span>
<span class="n">stream</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="n">b</span><span class="p">(</span><span class="s">"</span><span class="se">\n</span><span class="s">"</span><span class="p">))</span>
</div></div>
<span class="k">def</span> <span class="nf">_nq_row</span><span class="p">(</span><span class="n">triple</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">triple</span><span class="p">[</span><span class="mi">2</span><span class="p">],</span> <span class="n">Literal</span><span class="p">):</span>
<span class="k">return</span> <span class="s">u"</span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> .</span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">triple</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">n3</span><span class="p">(),</span>
<span class="n">triple</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">n3</span><span class="p">(),</span>
<span class="n">_xmlcharref_encode</span><span class="p">(</span>
<span class="n">_quoteLiteral</span><span class="p">(</span><span class="n">triple</span><span class="p">[</span><span class="mi">2</span><span class="p">])),</span>
<span class="n">context</span><span class="o">.</span><span class="n">n3</span><span class="p">())</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="s">u"</span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> </span><span class="si">%s</span><span class="s"> .</span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">triple</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">n3</span><span class="p">(),</span>
<span class="n">triple</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">n3</span><span class="p">(),</span>
<span class="n">_xmlcharref_encode</span><span class="p">(</span><span class="n">triple</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span><span class="o">.</span><span class="n">n3</span><span class="p">()),</span>
<span class="n">context</span><span class="o">.</span><span class="n">n3</span><span class="p">())</span>
</pre></div>
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