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<h1>Source code for rdflib.extras.cmdlineutils</h1><div class="highlight"><pre>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">time</span>
<span class="kn">import</span> <span class="nn">getopt</span>
<span class="kn">import</span> <span class="nn">rdflib</span>
<span class="kn">import</span> <span class="nn">codecs</span>
<span class="kn">from</span> <span class="nn">rdflib.util</span> <span class="kn">import</span> <span class="n">guess_format</span>
<span class="k">def</span> <span class="nf">_help</span><span class="p">():</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"""</span>
<span class="s">program.py [-f <format>] [-o <output>] [files...]</span>
<span class="s">Read RDF files given on STDOUT - does something to the resulting graph</span>
<span class="s">If no files are given, read from stdin</span>
<span class="s">-o specifies file for output, if not given stdout is used</span>
<span class="s">-f specifies parser to use, if not given it is guessed from extension</span>
<span class="s">"""</span><span class="p">)</span>
<div class="viewcode-block" id="main"><a class="viewcode-back" href="../../../apidocs/rdflib.extras.html#rdflib.extras.cmdlineutils.main">[docs]</a><span class="k">def</span> <span class="nf">main</span><span class="p">(</span><span class="n">target</span><span class="p">,</span> <span class="n">_help</span><span class="o">=</span><span class="n">_help</span><span class="p">,</span> <span class="n">options</span><span class="o">=</span><span class="s">""</span><span class="p">,</span> <span class="n">stdin</span><span class="o">=</span><span class="bp">True</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> A main function for tools that read RDF from files given on commandline</span>
<span class="sd"> or from STDIN (if stdin parameter is true)</span>
<span class="sd"> """</span>
<span class="n">args</span><span class="p">,</span> <span class="n">files</span> <span class="o">=</span> <span class="n">getopt</span><span class="o">.</span><span class="n">getopt</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">:],</span> <span class="s">"hf:o:"</span> <span class="o">+</span> <span class="n">options</span><span class="p">)</span>
<span class="n">dargs</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
<span class="k">if</span> <span class="s">"-h"</span> <span class="ow">in</span> <span class="n">dargs</span><span class="p">:</span>
<span class="n">_help</span><span class="p">()</span>
<span class="n">sys</span><span class="o">.</span><span class="n">exit</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">)</span>
<span class="n">g</span> <span class="o">=</span> <span class="n">rdflib</span><span class="o">.</span><span class="n">Graph</span><span class="p">()</span>
<span class="k">if</span> <span class="s">"-f"</span> <span class="ow">in</span> <span class="n">dargs</span><span class="p">:</span>
<span class="n">f</span> <span class="o">=</span> <span class="n">dargs</span><span class="p">[</span><span class="s">"-f"</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">f</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">if</span> <span class="s">"-o"</span> <span class="ow">in</span> <span class="n">dargs</span><span class="p">:</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"Output to </span><span class="si">%s</span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">dargs</span><span class="p">[</span><span class="s">"-o"</span><span class="p">])</span>
<span class="n">out</span> <span class="o">=</span> <span class="n">codecs</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="n">dargs</span><span class="p">[</span><span class="s">"-o"</span><span class="p">],</span> <span class="s">"w"</span><span class="p">,</span> <span class="s">"utf-8"</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">out</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">stdout</span>
<span class="n">start</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">files</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="ow">and</span> <span class="n">stdin</span><span class="p">:</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"Reading from stdin as </span><span class="si">%s</span><span class="s">..."</span> <span class="o">%</span> <span class="n">f</span><span class="p">)</span>
<span class="n">g</span><span class="o">.</span><span class="n">load</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">stdin</span><span class="p">,</span> <span class="n">format</span><span class="o">=</span><span class="n">f</span><span class="p">)</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"[done]</span><span class="se">\n</span><span class="s">"</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">size</span> <span class="o">=</span> <span class="mi">0</span>
<span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">files</span><span class="p">:</span>
<span class="k">if</span> <span class="n">f</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">f</span> <span class="o">=</span> <span class="n">guess_format</span><span class="p">(</span><span class="n">x</span><span class="p">)</span>
<span class="n">start1</span> <span class="o">=</span> <span class="n">time</span><span class="o">.</span><span class="n">time</span><span class="p">()</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"Loading </span><span class="si">%s</span><span class="s"> as </span><span class="si">%s</span><span class="s">... "</span> <span class="o">%</span> <span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">f</span><span class="p">))</span>
<span class="n">g</span><span class="o">.</span><span class="n">load</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="n">format</span><span class="o">=</span><span class="n">f</span><span class="p">)</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"done.</span><span class="se">\t</span><span class="s">(</span><span class="si">%d</span><span class="s"> triples</span><span class="se">\t</span><span class="si">%.2f</span><span class="s"> seconds)</span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span>
<span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">g</span><span class="p">)</span> <span class="o">-</span> <span class="n">size</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="n">start1</span><span class="p">))</span>
<span class="n">size</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">g</span><span class="p">)</span>
<span class="n">sys</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"Loaded a total of </span><span class="si">%d</span><span class="s"> triples in </span><span class="si">%.2f</span><span class="s"> seconds.</span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span>
<span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">g</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="n">start</span><span class="p">))</span>
<span class="n">target</span><span class="p">(</span><span class="n">g</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">args</span><span class="p">)</span></div>
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