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Diffstat (limited to 'creactistore/_templates/lib/rdflib/plugins/parsers/trix.py')
| -rw-r--r-- | creactistore/_templates/lib/rdflib/plugins/parsers/trix.py | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/creactistore/_templates/lib/rdflib/plugins/parsers/trix.py b/creactistore/_templates/lib/rdflib/plugins/parsers/trix.py deleted file mode 100644 index 0c2e708..0000000 --- a/creactistore/_templates/lib/rdflib/plugins/parsers/trix.py +++ /dev/null @@ -1,286 +0,0 @@ -# Copyright (c) 2002, Daniel Krech, http://eikeon.com/ -# All rights reserved. -# -# Redistribution and use in source and binary forms, with or without -# modification, are permitted provided that the following conditions are -# met: -# -# * Redistributions of source code must retain the above copyright -# notice, this list of conditions and the following disclaimer. -# -# * Redistributions in binary form must reproduce the above -# copyright notice, this list of conditions and the following -# disclaimer in the documentation and/or other materials provided -# with the distribution. -# -# * Neither the name of Daniel Krech nor the names of its -# contributors may be used to endorse or promote products derived -# from this software without specific prior written permission. -# -# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -""" -""" -from rdflib.namespace import Namespace -from rdflib.term import URIRef -from rdflib.term import BNode -from rdflib.term import Literal -from rdflib.graph import Graph, ConjunctiveGraph -from rdflib.exceptions import ParserError -from rdflib.parser import Parser - -from xml.sax.saxutils import handler -from xml.sax import make_parser -from xml.sax.handler import ErrorHandler - -__all__ = ['create_parser', 'TriXHandler', 'TriXParser'] - - -TRIXNS=Namespace("http://www.w3.org/2004/03/trix/trix-1/") -XMLNS=Namespace("http://www.w3.org/XML/1998/namespace") - -class TriXHandler(handler.ContentHandler): - """An Sax Handler for TriX. See http://sw.nokia.com/trix/""" - - def __init__(self, store): - self.store = store - self.preserve_bnode_ids = False - self.reset() - - def reset(self): - self.bnode = {} - self.graph=self.store - self.triple=None - self.state=0 - self.lang=None - self.datatype=None - - # ContentHandler methods - - def setDocumentLocator(self, locator): - self.locator = locator - - def startDocument(self): - pass - - def startPrefixMapping(self, prefix, namespace): - pass - - def endPrefixMapping(self, prefix): - pass - - def startElementNS(self, name, qname, attrs): - - if name[0]!=str(TRIXNS): - self.error("Only elements in the TriX namespace are allowed. %s!=%s"%(name[0],TRIXNS)) - - if name[1]=="TriX": - if self.state==0: - self.state=1 - else: - self.error("Unexpected TriX element") - - elif name[1]=="graph": - if self.state==1: - self.state=2 - else: - self.error("Unexpected graph element") - - elif name[1]=="uri": - if self.state==2: - # the context uri - self.state=3 - elif self.state==4: - # part of a triple - pass - else: - self.error("Unexpected uri element") - - elif name[1]=="triple": - if self.state==2: - if self.graph==None: - # anonymous graph, create one with random bnode id - self.graph=Graph(store=self.store.store) - # start of a triple - self.triple=[] - self.state=4 - else: - self.error("Unexpected triple element") - - elif name[1]=="typedLiteral": - if self.state==4: - # part of triple - self.lang=None - self.datatype=None - - try: - self.lang=attrs.getValue((unicode(XMLNS), u"lang")) - except: - # language not required - ignore - pass - try: - self.datatype=attrs.getValueByQName(u"datatype") - except KeyError: - self.error("No required attribute 'datatype'") - else: - self.error("Unexpected typedLiteral element") - - elif name[1]=="plainLiteral": - if self.state==4: - # part of triple - self.lang=None - self.datatype=None - try: - self.lang=attrs.getValue((unicode(XMLNS), u"lang")) - except: - # language not required - ignore - pass - - else: - self.error("Unexpected plainLiteral element") - - elif name[1]=="id": - if self.state==2: - # the context uri - self.state=3 - - elif self.state==4: - # part of triple - pass - else: - self.error("Unexpected id element") - - else: - self.error("Unknown element %s in TriX namespace"%name[1]) - - self.chars="" - - - def endElementNS(self, name, qname): - if name[0]!=str(TRIXNS): - self.error("Only elements in the TriX namespace are allowed. %s!=%s"%(name[0], TRIXNS)) - - if name[1]=="uri": - if self.state==3: - self.graph=Graph(store=self.store.store, identifier=URIRef(self.chars.strip())) - self.state=2 - elif self.state==4: - self.triple+=[URIRef(self.chars.strip())] - else: - self.error("Illegal internal self.state - This should never happen if the SAX parser ensures XML syntax correctness") - - elif name[1]=="id": - if self.state==3: - self.graph=Graph(self.store.store,identifier=self.get_bnode(self.chars.strip())) - self.state=2 - elif self.state==4: - self.triple+=[self.get_bnode(self.chars.strip())] - else: - self.error("Illegal internal self.state - This should never happen if the SAX parser ensures XML syntax correctness") - - elif name[1]=="plainLiteral" or name[1]=="typedLiteral": - if self.state==4: - self.triple+=[Literal(self.chars, lang=self.lang, datatype=self.datatype)] - else: - self.error("This should never happen if the SAX parser ensures XML syntax correctness") - - elif name[1]=="triple": - if self.state==4: - if len(self.triple)!=3: - self.error("Triple has wrong length, got %d elements: %s"%(len(self.triple),self.triple)) - - self.graph.add(self.triple) - #self.store.store.add(self.triple,context=self.graph) - #self.store.addN([self.triple+[self.graph]]) - self.state=2 - else: - self.error("This should never happen if the SAX parser ensures XML syntax correctness") - - elif name[1]=="graph": - self.graph=None - self.state=1 - - elif name[1]=="TriX": - self.state=0 - - else: - self.error("Unexpected close element") - - - def get_bnode(self,label): - if self.preserve_bnode_ids: - bn=BNode(label) - else: - if label in self.bnode: - bn=self.bnode[label] - else: - bn=BNode(label) - self.bnode[label]=bn - return bn - - - def characters(self, content): - self.chars+=content - - - def ignorableWhitespace(self, content): - pass - - def processingInstruction(self, target, data): - pass - - - def error(self, message): - locator = self.locator - info = "%s:%s:%s: " % (locator.getSystemId(), - locator.getLineNumber(), locator.getColumnNumber()) - raise ParserError(info + message) - - -def create_parser(store): - parser = make_parser() - try: - # Workaround for bug in expatreader.py. Needed when - # expatreader is trying to guess a prefix. - parser.start_namespace_decl("xml", "http://www.w3.org/XML/1998/namespace") - except AttributeError: - pass # Not present in Jython (at least) - parser.setFeature(handler.feature_namespaces, 1) - trix = TriXHandler(store) - parser.setContentHandler(trix) - parser.setErrorHandler(ErrorHandler()) - return parser - - -class TriXParser(Parser): - """A parser for TriX. See http://sw.nokia.com/trix/""" - - def __init__(self): - pass - - def parse(self, source, sink, **args): - assert sink.store.context_aware - g=ConjunctiveGraph(store=sink.store) - - self._parser = create_parser(g) - content_handler = self._parser.getContentHandler() - preserve_bnode_ids = args.get("preserve_bnode_ids", None) - if preserve_bnode_ids is not None: - content_handler.preserve_bnode_ids = preserve_bnode_ids - # We're only using it once now - #content_handler.reset() - #self._parser.reset() - self._parser.parse(source) - - - |