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<h1>Source code for rdflib.plugins.parsers.pyRdfa.termorcurie</h1><div class="highlight"><pre>
<span class="c"># -*- coding: utf-8 -*-</span>
<span class="sd">"""</span>
<span class="sd">Management of vocabularies, terms, and their mapping to URI-s. The main class of this module (L{TermOrCurie}) is,</span>
<span class="sd">conceptually, part of the overall state of processing at a node (L{state.ExecutionContext}) but putting it into a separate</span>
<span class="sd">module makes it easider to maintain.</span>
<span class="sd">@summary: Management of vocabularies, terms, and their mapping to URI-s.</span>
<span class="sd">@requires: U{RDFLib package<http://rdflib.net>}</span>
<span class="sd">@organization: U{World Wide Web Consortium<http://www.w3.org>}</span>
<span class="sd">@author: U{Ivan Herman<a href="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">@var XHTML_PREFIX: prefix for the XHTML vocabulary URI (set to 'xhv')</span>
<span class="sd">@var XHTML_URI: URI prefix of the XHTML vocabulary</span>
<span class="sd">@var ncname: Regular expression object for NCNAME</span>
<span class="sd">@var termname: Regular expression object for a term</span>
<span class="sd">@var xml_application_media_type: Regular expression object for a general XML application media type</span>
<span class="sd">"""</span>
<span class="sd">"""</span>
<span class="sd">$Id: termorcurie.py,v 1.12 2013-10-16 11:48:54 ivan Exp $</span>
<span class="sd">$Date: 2013-10-16 11:48:54 $</span>
<span class="sd">"""</span>
<span class="kn">import</span> <span class="nn">re</span><span class="o">,</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">xml.dom.minidom</span>
<span class="kn">import</span> <span class="nn">random</span>
<span class="k">if</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="kn">from</span> <span class="nn">urllib.parse</span> <span class="kn">import</span> <span class="n">urlsplit</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">urlsplit</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="kn">from</span> <span class="nn">.options</span> <span class="kn">import</span> <span class="n">Options</span>
<span class="kn">from</span> <span class="nn">.utils</span> <span class="kn">import</span> <span class="n">quote_URI</span><span class="p">,</span> <span class="n">URIOpener</span>
<span class="kn">from</span> <span class="nn">.host</span> <span class="kn">import</span> <span class="n">MediaTypes</span><span class="p">,</span> <span class="n">HostLanguage</span><span class="p">,</span> <span class="n">predefined_1_0_rel</span><span class="p">,</span> <span class="n">warn_xmlns_usage</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">RDFA_VOCAB</span><span class="p">,</span> <span class="n">UnresolvableReference</span><span class="p">,</span> <span class="n">PrefixRedefinitionWarning</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">ns_rdfa</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_redefining_URI_as_prefix</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_xmlns_deprecated</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_bnode_local_prefix</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_col_local_prefix</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_missing_URI_prefix</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_invalid_prefix</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_no_default_prefix</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_prefix_and_xmlns</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_non_ncname_prefix</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_absolute_reference</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_query_reference</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_fragment_reference</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">err_prefix_redefinition</span>
<span class="c"># Regular expression object for NCNAME</span>
<span class="n">ncname</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="s">"^[A-Za-z][A-Za-z0-9._-]*$"</span><span class="p">)</span>
<span class="c"># Regular expression object for term name</span>
<span class="n">termname</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="s">"^[A-Za-z]([A-Za-z0-9._-]|/)*$"</span><span class="p">)</span>
<span class="c"># Regular expression object for a general XML application media type</span>
<span class="n">xml_application_media_type</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="s">"application/[a-zA-Z0-9]+\+xml"</span><span class="p">)</span>
<span class="n">XHTML_PREFIX</span> <span class="o">=</span> <span class="s">"xhv"</span>
<span class="n">XHTML_URI</span> <span class="o">=</span> <span class="s">"http://www.w3.org/1999/xhtml/vocab#"</span>
<span class="c">#### Managing blank nodes for CURIE-s: mapping from local names to blank nodes.</span>
<span class="n">_bnodes</span> <span class="o">=</span> <span class="p">{}</span>
<span class="n">_empty_bnode</span> <span class="o">=</span> <span class="n">BNode</span><span class="p">()</span>
<span class="c">####</span>
<div class="viewcode-block" id="InitialContext"><a class="viewcode-back" href="../../../../../apidocs/rdflib.plugins.parsers.pyRdfa.html#rdflib.plugins.parsers.pyRdfa.termorcurie.InitialContext">[docs]</a><span class="k">class</span> <span class="nc">InitialContext</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Get the initial context values. In most cases this class has an empty content, except for the</span>
<span class="sd"> top level (in case of RDFa 1.1). Each L{TermOrCurie} class has one instance of this class. It provides initial</span>
<span class="sd"> mappings for terms, namespace prefixes, etc, that the top level L{TermOrCurie} instance uses for its own initialization.</span>
<span class="sd"> </span>
<span class="sd"> @ivar terms: collection of all term mappings</span>
<span class="sd"> @type terms: dictionary</span>
<span class="sd"> @ivar ns: namespace mapping</span>
<span class="sd"> @type ns: dictionary</span>
<span class="sd"> @ivar vocabulary: default vocabulary</span>
<span class="sd"> @type vocabulary: string</span>
<span class="sd"> """</span>
<div class="viewcode-block" id="InitialContext.__init__"><a class="viewcode-back" href="../../../../../apidocs/rdflib.plugins.parsers.pyRdfa.html#rdflib.plugins.parsers.pyRdfa.termorcurie.InitialContext.__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">state</span><span class="p">,</span> <span class="n">top_level</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> @param state: the state behind this term mapping</span>
<span class="sd"> @type state: L{state.ExecutionContext}</span>
<span class="sd"> @param top_level : whether this is the top node of the DOM tree (the only place where initial contexts are handled)</span>
<span class="sd"> @type top_level : boolean</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">state</span>
<span class="c"># This is to store the local terms</span>
<span class="bp">self</span><span class="o">.</span><span class="n">terms</span> <span class="o">=</span> <span class="p">{}</span>
<span class="c"># This is to store the local Namespaces (a.k.a. prefixes)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ns</span> <span class="o">=</span> <span class="p">{}</span>
<span class="c"># Default vocabulary</span>
<span class="bp">self</span><span class="o">.</span><span class="n">vocabulary</span> <span class="o">=</span> <span class="bp">None</span>
<span class="k">if</span> <span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o"><</span> <span class="s">"1.1"</span> <span class="ow">or</span> <span class="n">top_level</span> <span class="o">==</span> <span class="bp">False</span> <span class="p">:</span>
<span class="k">return</span>
<span class="kn">from</span> <span class="nn">.initialcontext</span> <span class="kn">import</span> <span class="n">initial_context</span> <span class="k">as</span> <span class="n">context_data</span>
<span class="kn">from</span> <span class="nn">.host</span> <span class="kn">import</span> <span class="n">initial_contexts</span> <span class="k">as</span> <span class="n">context_ids</span>
<span class="kn">from</span> <span class="nn">.host</span> <span class="kn">import</span> <span class="n">default_vocabulary</span>
<span class="k">for</span> <span class="nb">id</span> <span class="ow">in</span> <span class="n">context_ids</span><span class="p">[</span><span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">host_language</span><span class="p">]</span> <span class="p">:</span>
<span class="c"># This gives the id of a initial context, valid for this media type:</span>
<span class="n">data</span> <span class="o">=</span> <span class="n">context_data</span><span class="p">[</span><span class="nb">id</span><span class="p">]</span>
<span class="c"># Merge the context data with the overall definition</span>
<span class="k">if</span> <span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">host_language</span> <span class="ow">in</span> <span class="n">default_vocabulary</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">vocabulary</span> <span class="o">=</span> <span class="n">default_vocabulary</span><span class="p">[</span><span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">host_language</span><span class="p">]</span>
<span class="k">elif</span> <span class="n">data</span><span class="o">.</span><span class="n">vocabulary</span> <span class="o">!=</span> <span class="s">""</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">vocabulary</span> <span class="o">=</span> <span class="n">data</span><span class="o">.</span><span class="n">vocabulary</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">data</span><span class="o">.</span><span class="n">terms</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">terms</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">URIRef</span><span class="p">(</span><span class="n">data</span><span class="o">.</span><span class="n">terms</span><span class="p">[</span><span class="n">key</span><span class="p">])</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">data</span><span class="o">.</span><span class="n">ns</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ns</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">Namespace</span><span class="p">(</span><span class="n">data</span><span class="o">.</span><span class="n">ns</span><span class="p">[</span><span class="n">key</span><span class="p">]),</span><span class="bp">False</span><span class="p">)</span>
<span class="c">##################################################################################################################</span>
</div></div>
<div class="viewcode-block" id="TermOrCurie"><a class="viewcode-back" href="../../../../../apidocs/rdflib.plugins.parsers.pyRdfa.html#rdflib.plugins.parsers.pyRdfa.termorcurie.TermOrCurie">[docs]</a><span class="k">class</span> <span class="nc">TermOrCurie</span> <span class="p">:</span>
<span class="sd">"""</span>
<span class="sd"> Wrapper around vocabulary management, ie, mapping a term to a URI, as well as a CURIE to a URI. Each instance of this class belongs to a</span>
<span class="sd"> "state", instance of L{state.ExecutionContext}. Context definitions are managed at initialization time.</span>
<span class="sd"> </span>
<span class="sd"> (In fact, this class is, conceptually, part of the overall state at a node, and has been separated here for an</span>
<span class="sd"> easier maintenance.)</span>
<span class="sd"> </span>
<span class="sd"> The class takes care of the stack-like behavior of vocabulary items, ie, inheriting everything that is possible</span>
<span class="sd"> from the "parent". At initialization time, this works through the prefix definitions (i.e., C{@prefix} or C{@xmln:} attributes)</span>
<span class="sd"> and/or C{@vocab} attributes.</span>
<span class="sd"> </span>
<span class="sd"> @ivar state: State to which this instance belongs</span>
<span class="sd"> @type state: L{state.ExecutionContext}</span>
<span class="sd"> @ivar graph: The RDF Graph under generation</span>
<span class="sd"> @type graph: rdflib.Graph</span>
<span class="sd"> @ivar terms: mapping from terms to URI-s</span>
<span class="sd"> @type terms: dictionary</span>
<span class="sd"> @ivar ns: namespace declarations, ie, mapping from prefixes to URIs</span>
<span class="sd"> @type ns: dictionary</span>
<span class="sd"> @ivar default_curie_uri: URI for a default CURIE</span>
<span class="sd"> """</span>
<div class="viewcode-block" id="TermOrCurie.__init__"><a class="viewcode-back" href="../../../../../apidocs/rdflib.plugins.parsers.pyRdfa.html#rdflib.plugins.parsers.pyRdfa.termorcurie.TermOrCurie.__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">state</span><span class="p">,</span> <span class="n">graph</span><span class="p">,</span> <span class="n">inherited_state</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""Initialize the vocab bound to a specific state. </span>
<span class="sd"> @param state: the state to which this vocab instance belongs to</span>
<span class="sd"> @type state: L{state.ExecutionContext}</span>
<span class="sd"> @param graph: the RDF graph being worked on</span>
<span class="sd"> @type graph: rdflib.Graph</span>
<span class="sd"> @param inherited_state: the state inherited by the current state. 'None' if this is the top level state.</span>
<span class="sd"> @type inherited_state: L{state.ExecutionContext}</span>
<span class="sd"> """</span>
<span class="k">def</span> <span class="nf">check_prefix</span><span class="p">(</span><span class="n">pr</span><span class="p">)</span> <span class="p">:</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">uri_schemes</span>
<span class="k">if</span> <span class="n">pr</span> <span class="ow">in</span> <span class="n">uri_schemes</span> <span class="p">:</span>
<span class="c"># The prefix being defined is a registered URI scheme, better avoid it...</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_redefining_URI_as_prefix</span> <span class="o">%</span> <span class="n">pr</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">=</span> <span class="n">state</span>
<span class="bp">self</span><span class="o">.</span><span class="n">graph</span> <span class="o">=</span> <span class="n">graph</span>
<span class="c"># --------------------------------------------------------------------------------</span>
<span class="c"># This is set to non-void only on the top level and in the case of 1.1</span>
<span class="n">default_vocab</span> <span class="o">=</span> <span class="n">InitialContext</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="p">,</span> <span class="n">inherited_state</span> <span class="o">==</span> <span class="bp">None</span><span class="p">)</span>
<span class="c"># Set the default CURIE URI</span>
<span class="k">if</span> <span class="n">inherited_state</span> <span class="o">==</span> <span class="bp">None</span> <span class="p">:</span>
<span class="c"># This is the top level...</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_curie_uri</span> <span class="o">=</span> <span class="n">Namespace</span><span class="p">(</span><span class="n">XHTML_URI</span><span class="p">)</span>
<span class="c"># self.graph.bind(XHTML_PREFIX, self.default_curie_uri)</span>
<span class="k">else</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_curie_uri</span> <span class="o">=</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">default_curie_uri</span>
<span class="c"># --------------------------------------------------------------------------------</span>
<span class="c"># Set the default term URI</span>
<span class="c"># This is a 1.1 feature, ie, should be ignored if the version is < 1.0</span>
<span class="k">if</span> <span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o">>=</span> <span class="s">"1.1"</span> <span class="p">:</span>
<span class="c"># that is the absolute default setup...</span>
<span class="k">if</span> <span class="n">inherited_state</span> <span class="o">==</span> <span class="bp">None</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_term_uri</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">default_term_uri</span> <span class="o">=</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">default_term_uri</span>
<span class="c"># see if the initial context has defined a default vocabulary:</span>
<span class="k">if</span> <span class="n">default_vocab</span><span class="o">.</span><span class="n">vocabulary</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_term_uri</span> <span class="o">=</span> <span class="n">default_vocab</span><span class="o">.</span><span class="n">vocabulary</span>
<span class="c"># see if there is local vocab that would override previous settings</span>
<span class="c"># However, care should be taken with the vocab="" value that should not become a URI...</span>
<span class="c"># Indeed, this value is used to 'vipe out', ie, get back to the default vocabulary...</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">hasAttribute</span><span class="p">(</span><span class="s">"vocab"</span><span class="p">)</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">getAttribute</span><span class="p">(</span><span class="s">"vocab"</span><span class="p">)</span> <span class="o">==</span> <span class="s">""</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_term_uri</span> <span class="o">=</span> <span class="n">default_vocab</span><span class="o">.</span><span class="n">vocabulary</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">def_term_uri</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">getURI</span><span class="p">(</span><span class="s">"vocab"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">def_term_uri</span> <span class="ow">and</span> <span class="n">def_term_uri</span> <span class="o">!=</span> <span class="s">""</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_term_uri</span> <span class="o">=</span> <span class="n">def_term_uri</span>
<span class="bp">self</span><span class="o">.</span><span class="n">graph</span><span class="o">.</span><span class="n">add</span><span class="p">((</span><span class="n">URIRef</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">base</span><span class="p">),</span><span class="n">RDFA_VOCAB</span><span class="p">,</span><span class="n">URIRef</span><span class="p">(</span><span class="n">def_term_uri</span><span class="p">)))</span>
<span class="k">else</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_term_uri</span> <span class="o">=</span> <span class="bp">None</span>
<span class="c"># --------------------------------------------------------------------------------</span>
<span class="c"># The simpler case: terms, adding those that have been defined by a possible initial context</span>
<span class="k">if</span> <span class="n">inherited_state</span> <span class="ow">is</span> <span class="bp">None</span> <span class="p">:</span>
<span class="c"># this is the vocabulary belonging to the top level of the tree!</span>
<span class="bp">self</span><span class="o">.</span><span class="n">terms</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">if</span> <span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o">>=</span> <span class="s">"1.1"</span> <span class="p">:</span>
<span class="c"># Simply get the terms defined by the default vocabularies. There is no need for merging</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">default_vocab</span><span class="o">.</span><span class="n">terms</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">terms</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">default_vocab</span><span class="o">.</span><span class="n">terms</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># The terms are hardwired...</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">predefined_1_0_rel</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">terms</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">URIRef</span><span class="p">(</span><span class="n">XHTML_URI</span> <span class="o">+</span> <span class="n">key</span><span class="p">)</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># just refer to the inherited terms</span>
<span class="bp">self</span><span class="o">.</span><span class="n">terms</span> <span class="o">=</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">terms</span>
<span class="c">#-----------------------------------------------------------------</span>
<span class="c"># the locally defined namespaces</span>
<span class="nb">dict</span> <span class="o">=</span> <span class="p">{}</span>
<span class="c"># locally defined xmlns namespaces, necessary for correct XML Literal generation</span>
<span class="n">xmlns_dict</span> <span class="o">=</span> <span class="p">{}</span>
<span class="c"># Add the locally defined namespaces using the xmlns: syntax</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">attributes</span><span class="o">.</span><span class="n">length</span><span class="p">)</span> <span class="p">:</span>
<span class="n">attr</span> <span class="o">=</span> <span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">attributes</span><span class="o">.</span><span class="n">item</span><span class="p">(</span><span class="n">i</span><span class="p">)</span>
<span class="k">if</span> <span class="n">attr</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s">'xmlns:'</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">:</span>
<span class="c"># yep, there is a namespace setting</span>
<span class="n">prefix</span> <span class="o">=</span> <span class="n">attr</span><span class="o">.</span><span class="n">localName</span>
<span class="k">if</span> <span class="n">prefix</span> <span class="o">!=</span> <span class="s">""</span> <span class="p">:</span> <span class="c"># exclude the top level xmlns setting...</span>
<span class="k">if</span> <span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o">>=</span> <span class="s">"1.1"</span> <span class="ow">and</span> <span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">host_language</span> <span class="ow">in</span> <span class="n">warn_xmlns_usage</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_xmlns_deprecated</span> <span class="o">%</span> <span class="n">prefix</span><span class="p">,</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">if</span> <span class="n">prefix</span> <span class="o">==</span> <span class="s">"_"</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_bnode_local_prefix</span><span class="p">,</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">elif</span> <span class="n">prefix</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s">':'</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_col_local_prefix</span> <span class="o">%</span> <span class="n">prefix</span><span class="p">,</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># quote the URI, ie, convert special characters into %.. This is</span>
<span class="c"># true, for example, for spaces</span>
<span class="n">uri</span> <span class="o">=</span> <span class="n">quote_URI</span><span class="p">(</span><span class="n">attr</span><span class="o">.</span><span class="n">value</span><span class="p">,</span> <span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="p">)</span>
<span class="c"># create a new RDFLib Namespace entry</span>
<span class="n">ns</span> <span class="o">=</span> <span class="n">Namespace</span><span class="p">(</span><span class="n">uri</span><span class="p">)</span>
<span class="c"># Add an entry to the dictionary if not already there (priority is left to right!)</span>
<span class="k">if</span> <span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o">>=</span> <span class="s">"1.1"</span> <span class="p">:</span>
<span class="n">pr</span> <span class="o">=</span> <span class="n">prefix</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">pr</span> <span class="o">=</span> <span class="n">prefix</span>
<span class="nb">dict</span><span class="p">[</span><span class="n">pr</span><span class="p">]</span> <span class="o">=</span> <span class="n">ns</span>
<span class="n">xmlns_dict</span><span class="p">[</span><span class="n">pr</span><span class="p">]</span> <span class="o">=</span> <span class="n">ns</span>
<span class="bp">self</span><span class="o">.</span><span class="n">graph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span><span class="n">pr</span><span class="p">,</span><span class="n">ns</span><span class="p">)</span>
<span class="n">check_prefix</span><span class="p">(</span><span class="n">pr</span><span class="p">)</span>
<span class="c"># Add the locally defined namespaces using the @prefix syntax</span>
<span class="c"># this may override the definition @xmlns</span>
<span class="k">if</span> <span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o">>=</span> <span class="s">"1.1"</span> <span class="ow">and</span> <span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">hasAttribute</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">)</span> <span class="p">:</span>
<span class="n">pr</span> <span class="o">=</span> <span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">getAttribute</span><span class="p">(</span><span class="s">"prefix"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">pr</span> <span class="o">!=</span> <span class="bp">None</span> <span class="p">:</span>
<span class="c"># separator character is whitespace</span>
<span class="n">pr_list</span> <span class="o">=</span> <span class="n">pr</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
<span class="c"># range(0, len(pr_list), 2) </span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">pr_list</span><span class="p">)</span> <span class="o">-</span> <span class="mi">2</span><span class="p">,</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="o">-</span><span class="mi">2</span><span class="p">)</span> <span class="p">:</span>
<span class="n">prefix</span> <span class="o">=</span> <span class="n">pr_list</span><span class="p">[</span><span class="n">i</span><span class="p">]</span>
<span class="c"># see if there is a URI at all</span>
<span class="k">if</span> <span class="n">i</span> <span class="o">==</span> <span class="nb">len</span><span class="p">(</span><span class="n">pr_list</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_missing_URI_prefix</span> <span class="o">%</span> <span class="p">(</span><span class="n">prefix</span><span class="p">,</span><span class="n">pr</span><span class="p">),</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">break</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">value</span> <span class="o">=</span> <span class="n">pr_list</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">]</span>
<span class="c"># see if the value of prefix is o.k., ie, there is a ':' at the end</span>
<span class="k">if</span> <span class="n">prefix</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="o">!=</span> <span class="s">':'</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_invalid_prefix</span> <span class="o">%</span> <span class="p">(</span><span class="n">prefix</span><span class="p">,</span><span class="n">pr</span><span class="p">),</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">continue</span>
<span class="k">elif</span> <span class="n">prefix</span> <span class="o">==</span> <span class="s">":"</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_no_default_prefix</span> <span class="o">%</span> <span class="n">pr</span><span class="p">,</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">continue</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">prefix</span> <span class="o">=</span> <span class="n">prefix</span><span class="p">[:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
<span class="n">uri</span> <span class="o">=</span> <span class="n">Namespace</span><span class="p">(</span><span class="n">quote_URI</span><span class="p">(</span><span class="n">value</span><span class="p">,</span> <span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="p">))</span>
<span class="k">if</span> <span class="n">prefix</span> <span class="o">==</span> <span class="s">""</span> <span class="p">:</span>
<span class="c">#something to be done here</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_curie_uri</span> <span class="o">=</span> <span class="n">uri</span>
<span class="k">elif</span> <span class="n">prefix</span> <span class="o">==</span> <span class="s">"_"</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_bnode_local_prefix</span><span class="p">,</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># last check: is the prefix an NCNAME?</span>
<span class="k">if</span> <span class="n">ncname</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">prefix</span><span class="p">)</span> <span class="p">:</span>
<span class="n">real_prefix</span> <span class="o">=</span> <span class="n">prefix</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="nb">dict</span><span class="p">[</span><span class="n">real_prefix</span><span class="p">]</span> <span class="o">=</span> <span class="n">uri</span>
<span class="bp">self</span><span class="o">.</span><span class="n">graph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span><span class="n">real_prefix</span><span class="p">,</span><span class="n">uri</span><span class="p">)</span>
<span class="c"># Additional warning: is this prefix overriding an existing xmlns statement with a different URI? if</span>
<span class="c"># so, that may lead to discrepancies between an RDFa 1.0 and RDFa 1.1 run...</span>
<span class="k">if</span> <span class="p">(</span><span class="n">prefix</span> <span class="ow">in</span> <span class="n">xmlns_dict</span> <span class="ow">and</span> <span class="n">xmlns_dict</span><span class="p">[</span><span class="n">prefix</span><span class="p">]</span> <span class="o">!=</span> <span class="n">uri</span><span class="p">)</span> <span class="ow">or</span> <span class="p">(</span><span class="n">real_prefix</span> <span class="ow">in</span> <span class="n">xmlns_dict</span> <span class="ow">and</span> <span class="n">xmlns_dict</span><span class="p">[</span><span class="n">real_prefix</span><span class="p">]</span> <span class="o">!=</span> <span class="n">uri</span><span class="p">)</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_prefix_and_xmlns</span> <span class="o">%</span> <span class="p">(</span><span class="n">real_prefix</span><span class="p">,</span><span class="n">real_prefix</span><span class="p">),</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="n">check_prefix</span><span class="p">(</span><span class="n">real_prefix</span><span class="p">)</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_non_ncname_prefix</span> <span class="o">%</span> <span class="p">(</span><span class="n">prefix</span><span class="p">,</span><span class="n">pr</span><span class="p">),</span> <span class="n">IncorrectPrefixDefinition</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="c"># See if anything has been collected at all.</span>
<span class="c"># If not, the namespaces of the incoming state is</span>
<span class="c"># taken over by reference. Otherwise that is copied to the</span>
<span class="c"># the local dictionary</span>
<span class="k">if</span> <span class="n">inherited_state</span> <span class="o">==</span> <span class="bp">None</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span> <span class="o">=</span> <span class="n">default_vocab</span><span class="o">.</span><span class="n">ns</span>
<span class="n">inherited_prefixes</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">else</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span> <span class="o">=</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">default_prefixes</span>
<span class="n">inherited_prefixes</span> <span class="o">=</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">ns</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="nb">dict</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ns</span> <span class="o">=</span> <span class="n">inherited_prefixes</span>
<span class="k">else</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ns</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">inherited_prefixes</span> <span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">ns</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">inherited_prefixes</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="nb">dict</span> <span class="p">:</span>
<span class="k">if</span> <span class="p">(</span><span class="n">key</span> <span class="ow">in</span> <span class="n">inherited_prefixes</span> <span class="ow">and</span> <span class="nb">dict</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">!=</span> <span class="n">inherited_prefixes</span><span class="p">[</span><span class="n">key</span><span class="p">])</span> <span class="ow">or</span> <span class="p">(</span><span class="n">key</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span> <span class="ow">and</span> <span class="nb">dict</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">!=</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span><span class="p">[</span><span class="n">key</span><span class="p">][</span><span class="mi">0</span><span class="p">])</span> <span class="p">:</span>
<span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_prefix_redefinition</span> <span class="o">%</span> <span class="n">key</span><span class="p">,</span> <span class="n">PrefixRedefinitionWarning</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">ns</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="c"># the xmlns prefixes have to be stored separately, again for XML Literal generation </span>
<span class="bp">self</span><span class="o">.</span><span class="n">xmlns</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">xmlns_dict</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="ow">and</span> <span class="n">inherited_state</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">xmlns</span> <span class="o">=</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">xmlns</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">if</span> <span class="n">inherited_state</span> <span class="p">:</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">xmlns</span> <span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">xmlns</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">inherited_state</span><span class="o">.</span><span class="n">term_or_curie</span><span class="o">.</span><span class="n">xmlns</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">xmlns_dict</span> <span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">xmlns</span><span class="p">[</span><span class="n">key</span><span class="p">]</span> <span class="o">=</span> <span class="n">xmlns_dict</span><span class="p">[</span><span class="n">key</span><span class="p">]</span>
<span class="k">else</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">xmlns</span> <span class="o">=</span> <span class="n">xmlns_dict</span>
<span class="c"># end __init__</span>
</div>
<span class="k">def</span> <span class="nf">_check_reference</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">val</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""Checking the CURIE reference for correctness. It is probably not 100% foolproof, but may take care</span>
<span class="sd"> of some of the possible errors. See the URI RFC for the details.</span>
<span class="sd"> """</span>
<span class="k">def</span> <span class="nf">char_check</span><span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="n">not_allowed</span> <span class="o">=</span> <span class="p">[</span><span class="s">'#'</span><span class="p">,</span><span class="s">'['</span><span class="p">,</span><span class="s">']'</span><span class="p">])</span> <span class="p">:</span>
<span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">not_allowed</span> <span class="p">:</span>
<span class="k">if</span> <span class="n">s</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">c</span><span class="p">)</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span> <span class="p">:</span> <span class="k">return</span> <span class="bp">False</span>
<span class="k">return</span> <span class="bp">True</span>
<span class="c"># Creating an artificial http URI to fool the urlparse module...</span>
<span class="n">scheme</span><span class="p">,</span> <span class="n">netloc</span><span class="p">,</span> <span class="n">url</span><span class="p">,</span> <span class="n">query</span><span class="p">,</span> <span class="n">fragment</span> <span class="o">=</span> <span class="n">urlsplit</span><span class="p">(</span><span class="s">'http:'</span> <span class="o">+</span> <span class="n">val</span><span class="p">)</span>
<span class="k">if</span> <span class="n">netloc</span> <span class="o">!=</span> <span class="s">""</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o">>=</span> <span class="s">"1.1"</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_absolute_reference</span> <span class="o">%</span> <span class="p">(</span><span class="n">netloc</span><span class="p">,</span> <span class="n">val</span><span class="p">),</span> <span class="n">UnresolvableReference</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">False</span>
<span class="k">elif</span> <span class="ow">not</span> <span class="n">char_check</span><span class="p">(</span><span class="n">query</span><span class="p">)</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_query_reference</span> <span class="o">%</span> <span class="p">(</span><span class="n">query</span><span class="p">,</span> <span class="n">val</span><span class="p">),</span> <span class="n">UnresolvableReference</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">False</span>
<span class="k">elif</span> <span class="ow">not</span> <span class="n">char_check</span><span class="p">(</span><span class="n">fragment</span><span class="p">)</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">add_warning</span><span class="p">(</span><span class="n">err_fragment_reference</span> <span class="o">%</span> <span class="p">(</span><span class="n">fragment</span><span class="p">,</span> <span class="n">val</span><span class="p">),</span> <span class="n">UnresolvableReference</span><span class="p">,</span> <span class="n">node</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">nodeName</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">False</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">return</span> <span class="bp">True</span>
<div class="viewcode-block" id="TermOrCurie.CURIE_to_URI"><a class="viewcode-back" href="../../../../../apidocs/rdflib.plugins.parsers.pyRdfa.html#rdflib.plugins.parsers.pyRdfa.termorcurie.TermOrCurie.CURIE_to_URI">[docs]</a> <span class="k">def</span> <span class="nf">CURIE_to_URI</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">val</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""CURIE to URI mapping. </span>
<span class="sd"> </span>
<span class="sd"> This method does I{not} take care of the last step of CURIE processing, ie, the fact that if</span>
<span class="sd"> it does not have a CURIE then the value is used a URI. This is done on the caller's side, because this has</span>
<span class="sd"> to be combined with base, for example. The method I{does} take care of BNode processing, though, ie,</span>
<span class="sd"> CURIE-s of the form "_:XXX".</span>
<span class="sd"> </span>
<span class="sd"> @param val: the full CURIE</span>
<span class="sd"> @type val: string</span>
<span class="sd"> @return: URIRef of a URI or None.</span>
<span class="sd"> """</span>
<span class="c"># Just to be on the safe side:</span>
<span class="k">if</span> <span class="n">val</span> <span class="o">==</span> <span class="s">""</span> <span class="p">:</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="k">elif</span> <span class="n">val</span> <span class="o">==</span> <span class="s">":"</span> <span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_curie_uri</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">URIRef</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_curie_uri</span><span class="p">)</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="c"># See if this is indeed a valid CURIE, ie, it can be split by a colon</span>
<span class="n">curie_split</span> <span class="o">=</span> <span class="n">val</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">':'</span><span class="p">,</span><span class="mi">1</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">curie_split</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span> <span class="p">:</span>
<span class="c"># there is no ':' character in the string, ie, it is not a valid CURIE</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span><span class="o">.</span><span class="n">rdfa_version</span> <span class="o">>=</span> <span class="s">"1.1"</span> <span class="p">:</span>
<span class="n">prefix</span> <span class="o">=</span> <span class="n">curie_split</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">else</span> <span class="p">:</span>
<span class="n">prefix</span> <span class="o">=</span> <span class="n">curie_split</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
<span class="n">reference</span> <span class="o">=</span> <span class="n">curie_split</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="c">#if len(reference) > 0 :</span>
<span class="c"># if self.state.rdfa_version >= "1.1" and (len(prefix) == 0 or prefix in self.ns) and reference.startswith('//') :</span>
<span class="c"># # This has been defined as illegal in RDFa 1.1</span>
<span class="c"># self.state.options.add_warning(err_absolute_reference % (reference, val), UnresolvableReference, node=self.state.node.nodeName)</span>
<span class="c"># return None</span>
<span class="c"># if reference[0] == ":" :</span>
<span class="c"># return None</span>
<span class="c"># first possibility: empty prefix</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">prefix</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">:</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_curie_uri</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_reference</span><span class="p">(</span><span class="n">reference</span><span class="p">)</span> <span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_curie_uri</span><span class="p">[</span><span class="n">reference</span><span class="p">]</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># prefix is non-empty; can be a bnode</span>
<span class="k">if</span> <span class="n">prefix</span> <span class="o">==</span> <span class="s">"_"</span> <span class="p">:</span>
<span class="c"># yep, BNode processing. There is a difference whether the reference is empty or not...</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">reference</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">_empty_bnode</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># see if this variable has been used before for a BNode</span>
<span class="k">if</span> <span class="n">reference</span> <span class="ow">in</span> <span class="n">_bnodes</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">_bnodes</span><span class="p">[</span><span class="n">reference</span><span class="p">]</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># a new bnode...</span>
<span class="n">retval</span> <span class="o">=</span> <span class="n">BNode</span><span class="p">()</span>
<span class="n">_bnodes</span><span class="p">[</span><span class="n">reference</span><span class="p">]</span> <span class="o">=</span> <span class="n">retval</span>
<span class="k">return</span> <span class="n">retval</span>
<span class="c"># check if the prefix is a valid NCNAME</span>
<span class="k">elif</span> <span class="n">ncname</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">prefix</span><span class="p">)</span> <span class="p">:</span>
<span class="c"># see if there is a binding for this: </span>
<span class="k">if</span> <span class="n">prefix</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">ns</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_reference</span><span class="p">(</span><span class="n">reference</span><span class="p">)</span> <span class="p">:</span>
<span class="c"># yep, a binding has been defined!</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">reference</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">URIRef</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ns</span><span class="p">[</span><span class="n">prefix</span><span class="p">]))</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">ns</span><span class="p">[</span><span class="n">prefix</span><span class="p">][</span><span class="n">reference</span><span class="p">]</span>
<span class="k">elif</span> <span class="n">prefix</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_check_reference</span><span class="p">(</span><span class="n">reference</span><span class="p">)</span> <span class="p">:</span>
<span class="c"># this has been defined through the default context</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">reference</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">URIRef</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span><span class="p">[</span><span class="n">prefix</span><span class="p">][</span><span class="mi">0</span><span class="p">]))</span>
<span class="k">else</span> <span class="p">:</span>
<span class="p">(</span><span class="n">ns</span><span class="p">,</span><span class="n">used</span><span class="p">)</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span><span class="p">[</span><span class="n">prefix</span><span class="p">]</span>
<span class="c"># lazy binding of prefixes (to avoid unnecessary prefix definitions in the serializations at the end...)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">used</span> <span class="p">:</span>
<span class="bp">self</span><span class="o">.</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">ns</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">default_prefixes</span><span class="p">[</span><span class="n">prefix</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">ns</span><span class="p">,</span><span class="bp">True</span><span class="p">)</span>
<span class="k">return</span> <span class="n">ns</span><span class="p">[</span><span class="n">reference</span><span class="p">]</span>
<span class="k">else</span> <span class="p">:</span>
<span class="c"># no definition for this thing...</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="k">else</span> <span class="p">:</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="c"># end CURIE_to_URI</span>
</div>
<div class="viewcode-block" id="TermOrCurie.term_to_URI"><a class="viewcode-back" href="../../../../../apidocs/rdflib.plugins.parsers.pyRdfa.html#rdflib.plugins.parsers.pyRdfa.termorcurie.TermOrCurie.term_to_URI">[docs]</a> <span class="k">def</span> <span class="nf">term_to_URI</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">term</span><span class="p">)</span> <span class="p">:</span>
<span class="sd">"""A term to URI mapping, where term is a simple string and the corresponding</span>
<span class="sd"> URI is defined via the @vocab (ie, default term uri) mechanism. Returns None if term is not defined</span>
<span class="sd"> @param term: string</span>
<span class="sd"> @return: an RDFLib URIRef instance (or None)</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">term</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span> <span class="p">:</span> <span class="k">return</span> <span class="bp">None</span>
<span class="k">if</span> <span class="n">termname</span><span class="o">.</span><span class="n">match</span><span class="p">(</span><span class="n">term</span><span class="p">)</span> <span class="p">:</span>
<span class="c"># It is a valid NCNAME</span>
<span class="c"># First of all, a @vocab nukes everything. That has to be done first...</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_term_uri</span> <span class="o">!=</span> <span class="bp">None</span> <span class="p">:</span>
<span class="k">return</span> <span class="n">URIRef</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">default_term_uri</span> <span class="o">+</span> <span class="n">term</span><span class="p">)</span>
<span class="c"># For default terms, the algorithm is (see 7.4.3 of the document): first make a case sensitive match;</span>
<span class="c"># if that fails than make a case insensive one </span>
<span class="c"># 1. simple, case sensitive test:</span>
<span class="k">if</span> <span class="n">term</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">terms</span> <span class="p">:</span>
<span class="c"># yep, term is a valid key as is</span>
<span class="c"># lazy binding of the xhv prefix for terms...</span>
<span class="bp">self</span><span class="o">.</span><span class="n">graph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span><span class="n">XHTML_PREFIX</span><span class="p">,</span> <span class="n">XHTML_URI</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">terms</span><span class="p">[</span><span class="n">term</span><span class="p">]</span>
<span class="c"># 2. case insensitive test</span>
<span class="k">for</span> <span class="n">defined_term</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">terms</span> <span class="p">:</span>
<span class="k">if</span> <span class="n">term</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">==</span> <span class="n">defined_term</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="p">:</span>
<span class="c"># lazy binding of the xhv prefix for terms...</span>
<span class="bp">self</span><span class="o">.</span><span class="n">graph</span><span class="o">.</span><span class="n">bind</span><span class="p">(</span><span class="n">XHTML_PREFIX</span><span class="p">,</span> <span class="n">XHTML_URI</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">terms</span><span class="p">[</span><span class="n">defined_term</span><span class="p">]</span>
<span class="c"># If it got here, it is all wrong...</span>
<span class="k">return</span> <span class="bp">None</span></div></div>
</pre></div>
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