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<h1>Source code for rdflib.plugins.parsers.pyMicrodata</h1><div class="highlight"><pre>
<span class="c"># -*- coding: utf-8 -*-</span>
<span class="sd">"""</span>
<span class="sd">This module implements the microdata->RDF algorithm, as documented by the U{W3C Semantic Web Interest Group</span>
<span class="sd">Note<http://www.w3.org/TR/2012/NOTE-microdata-rdf-20120308/>}.</span>
<span class="sd">The module can be used via a stand-alone script (an example is part of the distribution) or bound to a CGI script as a Web Service. An example CGI script is also added to the distribution. Both the local script and the distribution may have to be adapted to local circumstances.</span>
<span class="sd">(Simple) Usage</span>
<span class="sd">==============</span>
<span class="sd">From a Python file, expecting a Turtle output::</span>
<span class="sd"> from pyMicrodata import pyMicrodata</span>
<span class="sd"> print pyMicrodata().rdf_from_source('filename')</span>
<span class="sd">Other output formats are also possible. E.g., to produce RDF/XML output, one could use::</span>
<span class="sd"> from pyMicrodata import pyMicrodata</span>
<span class="sd"> print pyMicrodata().rdf_from_source('filename', outputFormat='pretty-xml')</span>
<span class="sd">It is also possible to embed an RDFa processing. Eg, using::</span>
<span class="sd"> from pyMicrodata import pyMicrodata</span>
<span class="sd"> graph = pyMicrodata().graph_from_source('filename')</span>
<span class="sd">returns an RDFLib.Graph object instead of a serialization thereof. See the the description of the</span>
<span class="sd">L{pyMicrodata class<pyMicrodata.pyMicrodata>} for further possible entry points details.</span>
<span class="sd">There is also, as part of this module, a L{separate entry for CGI calls<processURI>}.</span>
<span class="sd">Return formats</span>
<span class="sd">--------------</span>
<span class="sd">By default, the output format for the graph is RDF/XML. At present, the following formats are also available (with the corresponding key to be used in the package entry points):</span>
<span class="sd"> - "xml": U{RDF/XML<http://www.w3.org/TR/rdf-syntax-grammar/>}</span>
<span class="sd"> - "turtle": U{Turtle<http://www.w3.org/TR/turtle/>} (default)</span>
<span class="sd"> - "nt": U{N-triple<http://www.w3.org/TR/rdf-testcases/#ntriples>}</span>
<span class="sd"> - "json": U{JSON-LD<http://json-ld.org/spec/latest/json-ld-syntax/>}</span>
<span class="sd">@summary: Microdata parser (distiller)</span>
<span class="sd">@requires: Python version 2.5 or up</span>
<span class="sd">@requires: U{RDFLib<http://rdflib.net>}</span>
<span class="sd">@requires: U{html5lib<http://code.google.com/p/html5lib/>} for the HTML5 parsing; note possible dependecies on Python's version on the project's web site</span>
<span class="sd">@organization: U{World Wide Web Consortium<http://www.w3.org>}</span>
<span class="sd">@author: U{Ivan Herman<http://www.w3.org/People/Ivan/>}</span>
<span class="sd">@license: This software is available for use under the</span>
<span class="sd">U{W3C® SOFTWARE NOTICE AND LICENSE<href="http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231">}</span>
<span class="sd">@copyright: W3C</span>
<span class="sd">"""</span>
<span class="sd">"""</span>
<span class="sd">$Id: __init__.py,v 1.15 2012/09/05 16:40:43 ivan Exp $ $Date: 2012/09/05 16:40:43 $</span>
<span class="sd">"""</span>
<span class="n">__version__</span> <span class="o">=</span> <span class="s">"1.2"</span>
<span class="n">__author__</span> <span class="o">=</span> <span class="s">'Ivan Herman'</span>
<span class="n">__contact__</span> <span class="o">=</span> <span class="s">'Ivan Herman, ivan@w3.org'</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="n">PY3</span> <span class="o">=</span> <span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">version_info</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">>=</span> <span class="mi">3</span><span class="p">)</span>
<span class="k">if</span> <span class="n">PY3</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">io</span> <span class="kn">import</span> <span class="n">StringIO</span>
<span class="k">else</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">StringIO</span> <span class="kn">import</span> <span class="n">StringIO</span>
<span class="kn">import</span> <span class="nn">datetime</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">rdflib</span>
<span class="kn">from</span> <span class="nn">rdflib</span> <span class="kn">import</span> <span class="n">URIRef</span>
<span class="kn">from</span> <span class="nn">rdflib</span> <span class="kn">import</span> <span class="n">Literal</span>
<span class="kn">from</span> <span class="nn">rdflib</span> <span class="kn">import</span> <span class="n">BNode</span>
<span class="kn">from</span> <span class="nn">rdflib</span> <span class="kn">import</span> <span class="n">Namespace</span>
<span class="k">if</span> <span class="n">rdflib</span><span class="o">.</span><span class="n">__version__</span> <span class="o">>=</span> <span class="s">"3.0.0"</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">rdflib</span> <span class="kn">import</span> <span class="n">Graph</span>
<span class="kn">from</span> <span class="nn">rdflib</span> <span class="kn">import</span> <span class="n">RDF</span> <span class="k">as</span> <span class="n">ns_rdf</span>
<span class="kn">from</span> <span class="nn">rdflib</span> <span class="kn">import</span> <span class="n">RDFS</span> <span class="k">as</span> <span class="n">ns_rdfs</span>
<span class="k">else</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">rdflib.Graph</span> <span class="kn">import</span> <span class="n">Graph</span>
<span class="kn">from</span> <span class="nn">rdflib.RDFS</span> <span class="kn">import</span> <span class="n">RDFSNS</span> <span class="k">as</span> <span class="n">ns_rdfs</span>
<span class="kn">from</span> <span class="nn">rdflib.RDF</span> <span class="kn">import</span> <span class="n">RDFNS</span> <span class="k">as</span> <span class="n">ns_rdf</span>
<span class="k">if</span> <span class="n">PY3</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlparse</span>
<span class="k">else</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">urlparse</span> <span class="kn">import</span> <span class="n">urlparse</span>
<span class="n">debug</span> <span class="o">=</span> <span class="bp">False</span>
<span class="kn">from</span> <span class="nn">.utils</span> <span class="kn">import</span> <span class="n">URIOpener</span>
<span class="kn">from</span> <span class="nn">.microdata</span> <span class="kn">import</span> <span class="n">MicrodataConversion</span>
<span class="n">ns_micro</span> <span class="o">=</span> <span class="n">Namespace</span><span class="p">(</span><span class="s">"http://www.w3.org/2012/pyMicrodata/vocab#"</span><span class="p">)</span>
<span class="n">ns_dc</span> <span class="o">=</span> <span class="n">Namespace</span><span class="p">(</span><span class="s">"http://purl.org/dc/terms/"</span><span class="p">)</span>
<span class="n">ns_xsd</span> <span class="o">=</span> <span class="n">Namespace</span><span class="p">(</span><span class="s">'http://www.w3.org/2001/XMLSchema#'</span><span class="p">)</span>
<span class="n">ns_ht</span> <span class="o">=</span> <span class="n">Namespace</span><span class="p">(</span><span class="s">"http://www.w3.org/2006/http#"</span><span class="p">)</span>
<div class="viewcode-block" id="MicrodataError"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.MicrodataError">[docs]</a><span class="k">class</span> <span class="nc">MicrodataError</span><span class="p">(</span><span class="ne">Exception</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""Superclass exceptions representing error conditions defined by the RDFa 1.1 specification.</span>
<span class="sd"> It does not add any new functionality to the</span>
<span class="sd"> Exception class."""</span>
<div class="viewcode-block" id="MicrodataError.__init__"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.MicrodataError.__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">msg</span><span class="p">)</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">msg</span> <span class="o">=</span> <span class="n">msg</span>
<span class="ne">Exception</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
</div></div>
<div class="viewcode-block" id="HTTPError"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.HTTPError">[docs]</a><span class="k">class</span> <span class="nc">HTTPError</span><span class="p">(</span><span class="n">MicrodataError</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""Raised when HTTP problems are detected. It does not add any new functionality to the</span>
<span class="sd"> Exception class."""</span>
<div class="viewcode-block" id="HTTPError.__init__"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.HTTPError.__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">http_msg</span><span class="p">,</span> <span class="n">http_code</span><span class="p">)</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">msg</span> <span class="o">=</span> <span class="n">http_msg</span>
<span class="bp">self</span><span class="o">.</span><span class="n">http_code</span> <span class="o">=</span> <span class="n">http_code</span>
<span class="n">MicrodataError</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span><span class="n">http_msg</span><span class="p">)</span>
<span class="c"># Default bindings. This is just for the beauty of things: bindings are added to the graph to make the output nicer. If this is not done, RDFlib defines prefixes like "_1:", "_2:" which is, though correct, ugly...</span>
</div></div>
<span class="n">_bindings</span> <span class="o">=</span> <span class="p">{</span>
<span class="s">'owl'</span> <span class="p">:</span> <span class="s">'http://www.w3.org/2002/07/owl#'</span><span class="p">,</span>
<span class="s">'gr'</span> <span class="p">:</span> <span class="s">'http://purl.org/goodrelations/v1#'</span><span class="p">,</span>
<span class="s">'cc'</span> <span class="p">:</span> <span class="s">'http://creativecommons.org/ns#'</span><span class="p">,</span>
<span class="s">'sioc'</span> <span class="p">:</span> <span class="s">'http://rdfs.org/sioc/ns#'</span><span class="p">,</span>
<span class="s">'skos'</span> <span class="p">:</span> <span class="s">'http://www.w3.org/2004/02/skos/core#'</span><span class="p">,</span>
<span class="s">'rdfs'</span> <span class="p">:</span> <span class="s">'http://www.w3.org/2000/01/rdf-schema#'</span><span class="p">,</span>
<span class="s">'foaf'</span> <span class="p">:</span> <span class="s">'http://xmlns.com/foaf/0.1/'</span><span class="p">,</span>
<span class="s">'void'</span> <span class="p">:</span> <span class="s">'http://rdfs.org/ns/void#'</span><span class="p">,</span>
<span class="s">'ical'</span> <span class="p">:</span> <span class="s">'http://www.w3.org/2002/12/cal/icaltzd#'</span><span class="p">,</span>
<span class="s">'vcard'</span> <span class="p">:</span> <span class="s">'http://www.w3.org/2006/vcard/ns#'</span><span class="p">,</span>
<span class="s">'og'</span> <span class="p">:</span> <span class="s">'http://ogp.me/ns#'</span><span class="p">,</span>
<span class="s">'rdf'</span> <span class="p">:</span> <span class="s">'http://www.w3.org/1999/02/22-rdf-syntax-ns#'</span><span class="p">,</span>
<span class="s">'ma'</span> <span class="p">:</span> <span class="s">'http://www.w3.org/ns/ma-ont#'</span><span class="p">,</span>
<span class="p">}</span>
<span class="c">#########################################################################################################</span>
<div class="viewcode-block" id="pyMicrodata"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.pyMicrodata">[docs]</a><span class="k">class</span> <span class="nc">pyMicrodata</span> <span class="p">:</span>
<span class="sd">"""Main processing class for the distiller</span>
<span class="sd"> @ivar base: the base value for processing</span>
<span class="sd"> @ivar http_status: HTTP Status, to be returned when the package is used via a CGI entry. Initially set to 200, may be modified by exception handlers</span>
<span class="sd"> """</span>
<div class="viewcode-block" id="pyMicrodata.__init__"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.pyMicrodata.__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">base</span> <span class="o">=</span> <span class="s">""</span><span class="p">,</span> <span class="n">vocab_expansion</span> <span class="o">=</span> <span class="bp">False</span><span class="p">,</span> <span class="n">vocab_cache</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> @keyword base: URI for the default "base" value (usually the URI of the file to be processed)</span>
<span class="sd"> @keyword vocab_expansion: whether vocab expansion should be performed or not</span>
<span class="sd"> @type vocab_expansion: Boolean</span>
<span class="sd"> @keyword vocab_cache: if vocabulary expansion is done, then perform caching of the vocabulary data</span>
<span class="sd"> @type vocab_cache: Boolean</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">=</span> <span class="mi">200</span>
<span class="bp">self</span><span class="o">.</span><span class="n">base</span> <span class="o">=</span> <span class="n">base</span>
<span class="bp">self</span><span class="o">.</span><span class="n">vocab_expansion</span> <span class="o">=</span> <span class="n">vocab_expansion</span>
<span class="bp">self</span><span class="o">.</span><span class="n">vocab_cache</span> <span class="o">=</span> <span class="n">vocab_cache</span>
</div>
<span class="k">def</span> <span class="nf">_generate_error_graph</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">pgraph</span><span class="p">,</span> <span class="n">full_msg</span><span class="p">,</span> <span class="n">uri</span> <span class="o">=</span> <span class="bp">None</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Generate an error message into the graph. This method is usually used reacting on exceptions.</span>
<span class="sd"> </span>
<span class="sd"> Later versions of pyMicrodata may have more detailed error conditions on which it wishes to react. At the moment, this</span>
<span class="sd"> is fairly crude...</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">pgraph</span> <span class="o">==</span> <span class="bp">None</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">=</span> <span class="n">Graph</span><span class="p">()</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">=</span> <span class="n">pgraph</span>
<span class="n">pgraph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span> <span class="s">"dc"</span><span class="p">,</span><span class="s">"http://purl.org/dc/terms/"</span> <span class="p">)</span>
<span class="n">pgraph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span> <span class="s">"xsd"</span><span class="p">,</span><span class="s">'http://www.w3.org/2001/XMLSchema#'</span> <span class="p">)</span>
<span class="n">pgraph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span> <span class="s">"ht"</span><span class="p">,</span><span class="s">'http://www.w3.org/2006/http#'</span> <span class="p">)</span>
<span class="n">pgraph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span> <span class="s">"pyMicrodata"</span><span class="p">,</span><span class="s">'http://www.w3.org/2012/pyMicrodata/vocab#'</span> <span class="p">)</span>
<span class="n">bnode</span> <span class="o">=</span> <span class="n">BNode</span><span class="p">()</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">((</span><span class="n">bnode</span><span class="p">,</span> <span class="n">ns_rdf</span><span class="p">[</span><span class="s">"type"</span><span class="p">],</span> <span class="n">ns_micro</span><span class="p">[</span><span class="s">"Error"</span><span class="p">]))</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">((</span><span class="n">bnode</span><span class="p">,</span> <span class="n">ns_dc</span><span class="p">[</span><span class="s">"description"</span><span class="p">],</span> <span class="n">Literal</span><span class="p">(</span><span class="n">full_msg</span><span class="p">)))</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">((</span><span class="n">bnode</span><span class="p">,</span> <span class="n">ns_dc</span><span class="p">[</span><span class="s">"date"</span><span class="p">],</span> <span class="n">Literal</span><span class="p">(</span><span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">utcnow</span><span class="p">()</span><span class="o">.</span><span class="n">isoformat</span><span class="p">(),</span><span class="n">datatype</span><span class="o">=</span><span class="n">ns_xsd</span><span class="p">[</span><span class="s">"dateTime"</span><span class="p">])))</span>
<span class="k">if</span> <span class="n">uri</span> <span class="o">!=</span> <span class="bp">None</span> <span class="p">:</span>
<span class="n">htbnode</span> <span class="o">=</span> <span class="n">BNode</span><span class="p">()</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">(</span> <span class="p">(</span><span class="n">bnode</span><span class="p">,</span> <span class="n">ns_micro</span><span class="p">[</span><span class="s">"context"</span><span class="p">],</span><span class="n">htbnode</span><span class="p">)</span> <span class="p">)</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">(</span> <span class="p">(</span><span class="n">htbnode</span><span class="p">,</span> <span class="n">ns_rdf</span><span class="p">[</span><span class="s">"type"</span><span class="p">],</span> <span class="n">ns_ht</span><span class="p">[</span><span class="s">"Request"</span><span class="p">])</span> <span class="p">)</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">(</span> <span class="p">(</span><span class="n">htbnode</span><span class="p">,</span> <span class="n">ns_ht</span><span class="p">[</span><span class="s">"requestURI"</span><span class="p">],</span> <span class="n">Literal</span><span class="p">(</span><span class="n">uri</span><span class="p">))</span> <span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">!=</span> <span class="bp">None</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">!=</span> <span class="mi">200</span><span class="p">:</span>
<span class="n">htbnode</span> <span class="o">=</span> <span class="n">BNode</span><span class="p">()</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">(</span> <span class="p">(</span><span class="n">bnode</span><span class="p">,</span> <span class="n">ns_micro</span><span class="p">[</span><span class="s">"context"</span><span class="p">],</span><span class="n">htbnode</span><span class="p">)</span> <span class="p">)</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">(</span> <span class="p">(</span><span class="n">htbnode</span><span class="p">,</span> <span class="n">ns_rdf</span><span class="p">[</span><span class="s">"type"</span><span class="p">],</span> <span class="n">ns_ht</span><span class="p">[</span><span class="s">"Response"</span><span class="p">])</span> <span class="p">)</span>
<span class="n">retval</span><span class="o">.</span><span class="n">add</span><span class="p">(</span> <span class="p">(</span><span class="n">htbnode</span><span class="p">,</span> <span class="n">ns_ht</span><span class="p">[</span><span class="s">"responseCode"</span><span class="p">],</span> <span class="n">URIRef</span><span class="p">(</span><span class="s">"http://www.w3.org/2006/http#</span><span class="si">%s</span><span class="s">"</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">http_status</span><span class="p">))</span> <span class="p">)</span>
<span class="k">return</span> <span class="n">retval</span>
<span class="k">def</span> <span class="nf">_get_input</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Trying to guess whether "name" is a URI, a string; it then tries to open these as such accordingly,</span>
<span class="sd"> returning a file-like object. If name is a plain string then it returns the input argument (that should</span>
<span class="sd"> be, supposidly, a file-like object already)</span>
<span class="sd"> @param name: identifier of the input source</span>
<span class="sd"> @type name: string or a file-like object</span>
<span class="sd"> @return: a file like object if opening "name" is possible and successful, "name" otherwise</span>
<span class="sd"> """</span>
<span class="k">try</span> <span class="p">:</span>
<span class="c"># Python 2 branch</span>
<span class="n">isstring</span> <span class="o">=</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="nb">basestring</span><span class="p">)</span>
<span class="k">except</span> <span class="p">:</span>
<span class="c"># Python 3 branch</span>
<span class="n">isstring</span> <span class="o">=</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="nb">str</span><span class="p">)</span>
<span class="k">if</span> <span class="n">isstring</span> <span class="p">:</span>
<span class="c"># check if this is a URI, ie, if there is a valid 'scheme' part</span>
<span class="c"># otherwise it is considered to be a simple file</span>
<span class="k">if</span> <span class="n">urlparse</span><span class="p">(</span><span class="n">name</span><span class="p">)[</span><span class="mi">0</span><span class="p">]</span> <span class="o">!=</span> <span class="s">""</span> <span class="p">:</span>
<span class="n">url_request</span> <span class="o">=</span> <span class="n">URIOpener</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">base</span> <span class="o">=</span> <span class="n">url_request</span><span class="o">.</span><span class="n">location</span>
<span class="k">return</span> <span class="n">url_request</span><span class="o">.</span><span class="n">data</span>
<span class="k">else</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">base</span> <span class="o">=</span> <span class="n">name</span>
<span class="k">return</span> <span class="nb">open</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="s">'rb'</span><span class="p">)</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">name</span>
<span class="c">####################################################################################################################</span>
<span class="c"># Externally used methods</span>
<span class="c">#</span>
<div class="viewcode-block" id="pyMicrodata.graph_from_DOM"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.pyMicrodata.graph_from_DOM">[docs]</a> <span class="k">def</span> <span class="nf">graph_from_DOM</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dom</span><span class="p">,</span> <span class="n">graph</span> <span class="o">=</span> <span class="bp">None</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Extract the RDF Graph from a DOM tree.</span>
<span class="sd"> @param dom: a DOM Node element, the top level entry node for the whole tree (to make it clear, a</span>
<span class="sd"> dom.documentElement is used to initiate processing)</span>
<span class="sd"> @keyword graph: an RDF Graph (if None, than a new one is created)</span>
<span class="sd"> @type graph: rdflib Graph instance. If None, a new one is created.</span>
<span class="sd"> @return: an RDF Graph</span>
<span class="sd"> @rtype: rdflib Graph instance</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="n">graph</span> <span class="o">==</span> <span class="bp">None</span> <span class="p">:</span>
<span class="c"># Create the RDF Graph, that will contain the return triples...</span>
<span class="n">graph</span> <span class="o">=</span> <span class="n">Graph</span><span class="p">()</span>
<span class="n">conversion</span> <span class="o">=</span> <span class="n">MicrodataConversion</span><span class="p">(</span><span class="n">dom</span><span class="o">.</span><span class="n">documentElement</span><span class="p">,</span>
<span class="n">graph</span><span class="p">,</span>
<span class="n">base</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">base</span><span class="p">,</span>
<span class="n">vocab_expansion</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">vocab_expansion</span><span class="p">,</span>
<span class="n">vocab_cache</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">vocab_cache</span><span class="p">)</span>
<span class="n">conversion</span><span class="o">.</span><span class="n">convert</span><span class="p">()</span>
<span class="k">return</span> <span class="n">graph</span>
</div>
<div class="viewcode-block" id="pyMicrodata.graph_from_source"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.pyMicrodata.graph_from_source">[docs]</a> <span class="k">def</span> <span class="nf">graph_from_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">graph</span> <span class="o">=</span> <span class="bp">None</span><span class="p">,</span> <span class="n">rdfOutput</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Extract an RDF graph from an microdata source. The source is parsed, the RDF extracted, and the RDF Graph is</span>
<span class="sd"> returned. This is a front-end to the L{pyMicrodata.graph_from_DOM} method.</span>
<span class="sd"> </span>
<span class="sd"> @param name: a URI, a file name, or a file-like object</span>
<span class="sd"> @return: an RDF Graph</span>
<span class="sd"> @rtype: rdflib Graph instance</span>
<span class="sd"> """</span>
<span class="c"># First, open the source...</span>
<span class="k">try</span> <span class="p">:</span>
<span class="c"># First, open the source... Possible HTTP errors are returned as error triples</span>
<span class="nb">input</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">try</span> <span class="p">:</span>
<span class="nb">input</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_input</span><span class="p">(</span><span class="n">name</span><span class="p">)</span>
<span class="k">except</span> <span class="n">HTTPError</span> <span class="p">:</span>
<span class="n">h</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">=</span> <span class="n">h</span><span class="o">.</span><span class="n">http_code</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">rdfOutput</span> <span class="p">:</span> <span class="k">raise</span> <span class="n">h</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_generate_error_graph</span><span class="p">(</span><span class="n">graph</span><span class="p">,</span> <span class="s">"HTTP Error: </span><span class="si">%s</span><span class="s"> (</span><span class="si">%s</span><span class="s">)"</span> <span class="o">%</span> <span class="p">(</span><span class="n">h</span><span class="o">.</span><span class="n">http_code</span><span class="p">,</span><span class="n">h</span><span class="o">.</span><span class="n">msg</span><span class="p">),</span> <span class="n">uri</span><span class="o">=</span><span class="n">name</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">Exception</span> <span class="p">:</span>
<span class="c"># Something nasty happened:-(</span>
<span class="n">e</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">=</span> <span class="mi">500</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">rdfOutput</span> <span class="p">:</span> <span class="k">raise</span> <span class="n">e</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_generate_error_graph</span><span class="p">(</span><span class="n">graph</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">),</span> <span class="n">uri</span><span class="o">=</span><span class="n">name</span><span class="p">)</span>
<span class="n">dom</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">try</span> <span class="p">:</span>
<span class="kn">import</span> <span class="nn">warnings</span>
<span class="n">warnings</span><span class="o">.</span><span class="n">filterwarnings</span><span class="p">(</span><span class="s">"ignore"</span><span class="p">,</span> <span class="n">category</span><span class="o">=</span><span class="ne">DeprecationWarning</span><span class="p">)</span>
<span class="kn">import</span> <span class="nn">html5lib</span>
<span class="n">parser</span> <span class="o">=</span> <span class="n">html5lib</span><span class="o">.</span><span class="n">HTMLParser</span><span class="p">(</span><span class="n">tree</span><span class="o">=</span><span class="n">html5lib</span><span class="o">.</span><span class="n">treebuilders</span><span class="o">.</span><span class="n">getTreeBuilder</span><span class="p">(</span><span class="s">"dom"</span><span class="p">))</span>
<span class="n">dom</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse</span><span class="p">(</span><span class="nb">input</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">graph_from_DOM</span><span class="p">(</span><span class="n">dom</span><span class="p">,</span> <span class="n">graph</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">ImportError</span> <span class="p">:</span>
<span class="n">msg</span> <span class="o">=</span> <span class="s">"HTML5 parser not available. Try installing html5lib <http://code.google.com/p/html5lib>"</span>
<span class="k">raise</span> <span class="ne">ImportError</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">Exception</span> <span class="p">:</span>
<span class="c"># Something nasty happened:-(</span>
<span class="n">e</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">=</span> <span class="mi">400</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">rdfOutput</span> <span class="p">:</span> <span class="k">raise</span> <span class="n">e</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_generate_error_graph</span><span class="p">(</span><span class="n">graph</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">),</span> <span class="n">uri</span><span class="o">=</span><span class="n">name</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">Exception</span> <span class="p">:</span>
<span class="c"># Something nasty happened:-(</span>
<span class="n">e</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="ne">ImportError</span><span class="p">)</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">else</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">http_status</span> <span class="o">=</span> <span class="mi">500</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">rdfOutput</span> <span class="p">:</span> <span class="k">raise</span> <span class="n">e</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_generate_error_graph</span><span class="p">(</span><span class="n">graph</span><span class="p">,</span> <span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">),</span> <span class="n">uri</span><span class="o">=</span><span class="n">name</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="pyMicrodata.rdf_from_sources"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.pyMicrodata.rdf_from_sources">[docs]</a> <span class="k">def</span> <span class="nf">rdf_from_sources</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">names</span><span class="p">,</span> <span class="n">outputFormat</span> <span class="o">=</span> <span class="s">"pretty-xml"</span><span class="p">,</span> <span class="n">rdfOutput</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Extract and RDF graph from a list of RDFa sources and serialize them in one graph. The sources are parsed, the RDF</span>
<span class="sd"> extracted, and serialization is done in the specified format.</span>
<span class="sd"> @param names: list of sources, each can be a URI, a file name, or a file-like object</span>
<span class="sd"> @keyword outputFormat: serialization format. Can be one of "turtle", "n3", "xml", "pretty-xml", "nt". "xml" and "pretty-xml", as well as "turtle" and "n3" are synonyms.</span>
<span class="sd"> @return: a serialized RDF Graph</span>
<span class="sd"> @rtype: string</span>
<span class="sd"> """</span>
<span class="k">try</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">pyRdfaExtras</span> <span class="kn">import</span> <span class="n">MyGraph</span>
<span class="n">graph</span> <span class="o">=</span> <span class="n">MyGraph</span><span class="p">()</span>
<span class="k">except</span> <span class="p">:</span>
<span class="n">graph</span> <span class="o">=</span> <span class="n">Graph</span><span class="p">()</span>
<span class="k">for</span> <span class="n">prefix</span> <span class="ow">in</span> <span class="n">_bindings</span> <span class="p">:</span>
<span class="n">graph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span><span class="n">prefix</span><span class="p">,</span><span class="n">Namespace</span><span class="p">(</span><span class="n">_bindings</span><span class="p">[</span><span class="n">prefix</span><span class="p">]))</span>
<span class="c"># the value of rdfOutput determines the reaction on exceptions...</span>
<span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">names</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">graph_from_source</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">graph</span><span class="p">,</span> <span class="n">rdfOutput</span><span class="p">)</span>
<span class="k">return</span> <span class="n">graph</span><span class="o">.</span><span class="n">serialize</span><span class="p">(</span><span class="n">format</span><span class="o">=</span><span class="n">outputFormat</span><span class="p">)</span>
</div>
<div class="viewcode-block" id="pyMicrodata.rdf_from_source"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.pyMicrodata.rdf_from_source">[docs]</a> <span class="k">def</span> <span class="nf">rdf_from_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">outputFormat</span> <span class="o">=</span> <span class="s">"pretty-xml"</span><span class="p">,</span> <span class="n">rdfOutput</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Extract and RDF graph from an RDFa source and serialize it in one graph. The source is parsed, the RDF</span>
<span class="sd"> extracted, and serialization is done in the specified format.</span>
<span class="sd"> @param name: a URI, a file name, or a file-like object</span>
<span class="sd"> @keyword outputFormat: serialization format. Can be one of "turtle", "n3", "xml", "pretty-xml", "nt". "xml" and "pretty-xml", as well as "turtle" and "n3" are synonyms.</span>
<span class="sd"> @return: a serialized RDF Graph</span>
<span class="sd"> @rtype: string</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">rdf_from_sources</span><span class="p">([</span><span class="n">name</span><span class="p">],</span> <span class="n">outputFormat</span><span class="p">,</span> <span class="n">rdfOutput</span><span class="p">)</span>
<span class="c">################################################# CGI Entry point</span></div></div>
<div class="viewcode-block" id="processURI"><a class="viewcode-back" href="../../../../apidocs/rdflib.plugins.parsers.pyMicrodata.html#rdflib.plugins.parsers.pyMicrodata.processURI">[docs]</a><span class="k">def</span> <span class="nf">processURI</span><span class="p">(</span><span class="n">uri</span><span class="p">,</span> <span class="n">outputFormat</span><span class="p">,</span> <span class="n">form</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""The standard processing of a microdata uri options in a form, ie, as an entry point from a CGI call.</span>
<span class="sd"> The call accepts extra form options (eg, HTTP GET options) as follows:</span>
<span class="sd"> </span>
<span class="sd"> @param uri: URI to access. Note that the "text:" and "uploaded:" values are treated separately; the former is for textual intput (in which case a StringIO is used to get the data) and the latter is for uploaded file, where the form gives access to the file directly.</span>
<span class="sd"> @param outputFormat: serialization formats, as understood by RDFLib. Note that though "turtle" is</span>
<span class="sd"> a possible parameter value, some versions of the RDFLib turtle generation does funny (though legal) things with</span>
<span class="sd"> namespaces, defining unusual and unwanted prefixes...</span>
<span class="sd"> @param form: extra call options (from the CGI call) to set up the local options (if any)</span>
<span class="sd"> @type form: cgi FieldStorage instance</span>
<span class="sd"> @return: serialized graph</span>
<span class="sd"> @rtype: string</span>
<span class="sd"> """</span>
<span class="k">def</span> <span class="nf">_get_option</span><span class="p">(</span><span class="n">param</span><span class="p">,</span> <span class="n">compare_value</span><span class="p">,</span> <span class="n">default</span><span class="p">)</span> <span class="p">:</span>
<span class="n">param_old</span> <span class="o">=</span> <span class="n">param</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">'_'</span><span class="p">,</span><span class="s">'-'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">param</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="n">form</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span> <span class="p">:</span>
<span class="n">val</span> <span class="o">=</span> <span class="n">form</span><span class="o">.</span><span class="n">getfirst</span><span class="p">(</span><span class="n">param</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">return</span> <span class="n">val</span> <span class="o">==</span> <span class="n">compare_value</span>
<span class="k">elif</span> <span class="n">param_old</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="n">form</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span> <span class="p">:</span>
<span class="c"># this is to ensure the old style parameters are still valid...</span>
<span class="c"># in the old days I used '-' in the parameters, the standard favours '_'</span>
<span class="n">val</span> <span class="o">=</span> <span class="n">form</span><span class="o">.</span><span class="n">getfirst</span><span class="p">(</span><span class="n">param_old</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">return</span> <span class="n">val</span> <span class="o">==</span> <span class="n">compare_value</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">default</span>
<span class="k">if</span> <span class="n">uri</span> <span class="o">==</span> <span class="s">"uploaded:"</span> <span class="p">:</span>
<span class="nb">input</span> <span class="o">=</span> <span class="n">form</span><span class="p">[</span><span class="s">"uploaded"</span><span class="p">]</span><span class="o">.</span><span class="n">file</span>
<span class="n">base</span> <span class="o">=</span> <span class="s">""</span>
<span class="k">elif</span> <span class="n">uri</span> <span class="o">==</span> <span class="s">"text:"</span> <span class="p">:</span>
<span class="nb">input</span> <span class="o">=</span> <span class="n">StringIO</span><span class="p">(</span><span class="n">form</span><span class="o">.</span><span class="n">getfirst</span><span class="p">(</span><span class="s">"text"</span><span class="p">))</span>
<span class="n">base</span> <span class="o">=</span> <span class="s">""</span>
<span class="k">else</span> <span class="p">:</span>
<span class="nb">input</span> <span class="o">=</span> <span class="n">uri</span>
<span class="n">base</span> <span class="o">=</span> <span class="n">uri</span>
<span class="n">vocab_cache</span> <span class="o">=</span> <span class="n">_get_option</span><span class="p">(</span> <span class="s">"vocab_cache"</span><span class="p">,</span> <span class="s">"true"</span><span class="p">,</span> <span class="bp">True</span><span class="p">)</span>
<span class="n">vocab_expansion</span> <span class="o">=</span> <span class="n">_get_option</span><span class="p">(</span> <span class="s">"vocab_expansion"</span><span class="p">,</span> <span class="s">"true"</span><span class="p">,</span> <span class="bp">False</span><span class="p">)</span>
<span class="n">processor</span> <span class="o">=</span> <span class="n">pyMicrodata</span><span class="p">(</span><span class="n">base</span> <span class="o">=</span> <span class="n">base</span><span class="p">,</span> <span class="n">vocab_expansion</span> <span class="o">=</span> <span class="n">vocab_expansion</span><span class="p">,</span> <span class="n">vocab_cache</span> <span class="o">=</span> <span class="n">vocab_cache</span><span class="p">)</span>
<span class="c"># Decide the output format; the issue is what should happen in case of a top level error like an inaccessibility of</span>
<span class="c"># the html source: should a graph be returned or an HTML page with an error message?</span>
<span class="c"># decide whether HTML or RDF should be sent. </span>
<span class="n">htmlOutput</span> <span class="o">=</span> <span class="bp">False</span>
<span class="c">#if 'HTTP_ACCEPT' in os.environ :</span>
<span class="c"># acc = os.environ['HTTP_ACCEPT']</span>
<span class="c"># possibilities = ['text/html',</span>
<span class="c"># 'application/rdf+xml',</span>
<span class="c"># 'text/turtle; charset=utf-8',</span>
<span class="c"># 'application/json',</span>
<span class="c"># 'application/ld+json',</span>
<span class="c"># 'text/rdf+n3']</span>
<span class="c">#</span>
<span class="c"># # this nice module does content negotiation and returns the preferred format</span>
<span class="c"># sg = httpheader.acceptable_content_type(acc, possibilities)</span>
<span class="c"># htmlOutput = (sg != None and sg[0] == httpheader.content_type('text/html'))</span>
<span class="c"># os.environ['rdfaerror'] = 'true'</span>
<span class="k">try</span> <span class="p">:</span>
<span class="n">graph</span> <span class="o">=</span> <span class="n">processor</span><span class="o">.</span><span class="n">rdf_from_source</span><span class="p">(</span><span class="nb">input</span><span class="p">,</span> <span class="n">outputFormat</span><span class="p">,</span> <span class="n">rdfOutput</span> <span class="o">=</span> <span class="p">(</span><span class="s">"forceRDFOutput"</span> <span class="ow">in</span> <span class="nb">list</span><span class="p">(</span><span class="n">form</span><span class="o">.</span><span class="n">keys</span><span class="p">()))</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">htmlOutput</span><span class="p">)</span>
<span class="k">if</span> <span class="n">outputFormat</span> <span class="o">==</span> <span class="s">"n3"</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">=</span> <span class="s">'Content-Type: text/rdf+n3; charset=utf-8</span><span class="se">\n</span><span class="s">'</span>
<span class="k">elif</span> <span class="n">outputFormat</span> <span class="o">==</span> <span class="s">"nt"</span> <span class="ow">or</span> <span class="n">outputFormat</span> <span class="o">==</span> <span class="s">"turtle"</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">=</span> <span class="s">'Content-Type: text/turtle; charset=utf-8</span><span class="se">\n</span><span class="s">'</span>
<span class="k">elif</span> <span class="n">outputFormat</span> <span class="o">==</span> <span class="s">"json-ld"</span> <span class="ow">or</span> <span class="n">outputFormat</span> <span class="o">==</span> <span class="s">"json"</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">=</span> <span class="s">'Content-Type: application/json; charset=utf-8</span><span class="se">\n</span><span class="s">'</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">=</span> <span class="s">'Content-Type: application/rdf+xml; charset=utf-8</span><span class="se">\n</span><span class="s">'</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">'</span><span class="se">\n</span><span class="s">'</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="n">graph</span>
<span class="k">return</span> <span class="n">retval</span>
<span class="k">except</span> <span class="n">HTTPError</span> <span class="p">:</span>
<span class="kn">import</span> <span class="nn">cgi</span>
<span class="n">h</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()[</span><span class="mi">1</span><span class="p">]</span>
<span class="n">retval</span> <span class="o">=</span> <span class="s">'Content-type: text/html; charset=utf-8</span><span class="se">\n</span><span class="s">Status: </span><span class="si">%s</span><span class="s"> </span><span class="se">\n\n</span><span class="s">'</span> <span class="o">%</span> <span class="n">h</span><span class="o">.</span><span class="n">http_code</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<html></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<head></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<title>HTTP Error in Microdata processing</title></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"</head><body></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<h1>HTTP Error in distilling Microdata</h1></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<p>HTTP Error: </span><span class="si">%s</span><span class="s"> (</span><span class="si">%s</span><span class="s">)</p></span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">h</span><span class="o">.</span><span class="n">http_code</span><span class="p">,</span><span class="n">h</span><span class="o">.</span><span class="n">msg</span><span class="p">)</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<p>On URI: <code>'</span><span class="si">%s</span><span class="s">'</code></p></span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">cgi</span><span class="o">.</span><span class="n">escape</span><span class="p">(</span><span class="n">uri</span><span class="p">)</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"</body></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"</html></span><span class="se">\n</span><span class="s">"</span>
<span class="k">return</span> <span class="n">retval</span>
<span class="k">except</span> <span class="p">:</span>
<span class="c"># This branch should occur only if an exception is really raised, ie, if it is not turned</span>
<span class="c"># into a graph value.</span>
<span class="p">(</span><span class="nb">type</span><span class="p">,</span><span class="n">value</span><span class="p">,</span><span class="n">traceback</span><span class="p">)</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">exc_info</span><span class="p">()</span>
<span class="kn">import</span> <span class="nn">traceback</span><span class="o">,</span> <span class="nn">cgi</span>
<span class="n">retval</span> <span class="o">=</span> <span class="s">'Content-type: text/html; charset=utf-8</span><span class="se">\n</span><span class="s">Status: </span><span class="si">%s</span><span class="se">\n\n</span><span class="s">'</span> <span class="o">%</span> <span class="n">processor</span><span class="o">.</span><span class="n">http_status</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<html></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<head></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<title>Exception in Microdata processing</title></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"</head><body></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<h1>Exception in distilling Microdata</h1></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="s">"<pre></span><span class="se">\n</span><span class="s">"</span>
<span class="n">strio</span> <span class="o">=</span> <span class="n">StringIO</span><span class="p">()</span>
<span class="n">traceback</span><span class="o">.</span><span class="n">print_exc</span><span class="p">(</span><span class="nb">file</span><span class="o">=</span><span class="n">strio</span><span class="p">)</span>
<span class="n">retval</span> <span class="o">+=</span> <span class="n">strio</span><span class="o">.</span><span class="n">getvalue</span><span class="p">()</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"</pre></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"<pre></span><span class="si">%s</span><span class="s"></pre></span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">value</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"<h1>Distiller request details</h1></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"<dl></span><span class="se">\n</span><span class="s">"</span>
<span class="k">if</span> <span class="n">uri</span> <span class="o">==</span> <span class="s">"text:"</span> <span class="ow">and</span> <span class="s">"text"</span> <span class="ow">in</span> <span class="n">form</span> <span class="ow">and</span> <span class="n">form</span><span class="p">[</span><span class="s">"text"</span><span class="p">]</span><span class="o">.</span><span class="n">value</span> <span class="o">!=</span> <span class="bp">None</span> <span class="ow">and</span> <span class="nb">len</span><span class="p">(</span><span class="n">form</span><span class="p">[</span><span class="s">"text"</span><span class="p">]</span><span class="o">.</span><span class="n">value</span><span class="o">.</span><span class="n">strip</span><span class="p">())</span> <span class="o">!=</span> <span class="mi">0</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"<dt>Text input:</dt><dd></span><span class="si">%s</span><span class="s"></dd></span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">cgi</span><span class="o">.</span><span class="n">escape</span><span class="p">(</span><span class="n">form</span><span class="p">[</span><span class="s">"text"</span><span class="p">]</span><span class="o">.</span><span class="n">value</span><span class="p">)</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">'</span><span class="se">\n</span><span class="s">'</span><span class="p">,</span><span class="s">'<br/>'</span><span class="p">)</span>
<span class="k">elif</span> <span class="n">uri</span> <span class="o">==</span> <span class="s">"uploaded:"</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"<dt>Uploaded file</dt></span><span class="se">\n</span><span class="s">"</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"<dt>URI received:</dt><dd><code>'</span><span class="si">%s</span><span class="s">'</code></dd></span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">cgi</span><span class="o">.</span><span class="n">escape</span><span class="p">(</span><span class="n">uri</span><span class="p">)</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"<dt>Output serialization format:</dt><dd> </span><span class="si">%s</span><span class="s"></dd></span><span class="se">\n</span><span class="s">"</span> <span class="o">%</span> <span class="n">outputFormat</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"</dl></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"</body></span><span class="se">\n</span><span class="s">"</span>
<span class="n">retval</span> <span class="o">+=</span><span class="s">"</html></span><span class="se">\n</span><span class="s">"</span>
<span class="k">return</span> <span class="n">retval</span>
<span class="c">###################################################################################################</span>
</pre></div></div>
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