mirror of
https://github.com/jezhiggins/arabica
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308 lines
9.3 KiB
C++
308 lines
9.3 KiB
C++
#ifndef JEZUK_SAX2DOM_PARSER_H
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#define JEZUK_SAX2DOM_PARSER_H
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#include <SAX/XMLReader.h>
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#include <SAX/ext/DefaultHandler2.h>
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#include <SAX/helpers/AttributeTypes.h>
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#include <DOM/Simple/DOMImplementation.h>
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#include <DOM/Simple/NotationImpl.h>
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#include <DOM/Simple/EntityImpl.h>
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#include <DOM/Document.h>
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#include <DOM/DOMException.h>
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#include <DOM/SAX2DOM/DocumentTypeImpl.h>
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#include <map>
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#include <SAX/helpers/FeatureNames.h>
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#include <SAX/helpers/PropertyNames.h>
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namespace SAX2DOM
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{
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template<class stringT,
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class string_adaptorT = SAX::default_string_adaptor<stringT>,
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class SAX_parser = SAX::XMLReader<stringT> >
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class Parser : private SAX::basic_DefaultHandler2<stringT>
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{
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typedef SAX::basic_EntityResolver<stringT> EntityResolverT;
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typedef SAX::basic_ErrorHandler<stringT> ErrorHandlerT;
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typedef SimpleDOM::EntityImpl<stringT, string_adaptorT> EntityT;
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typedef SimpleDOM::NotationImpl<stringT, string_adaptorT> NotationT;
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typedef SimpleDOM::ElementImpl<stringT, string_adaptorT> ElementT;
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typedef typename SAX::basic_ErrorHandler<stringT>::SAXParseExceptionT SAXParseExceptionT;
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public:
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Parser() :
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entityResolver_(0),
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errorHandler_(0)
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{
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} // Parser
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void setEntityResolver(EntityResolverT& resolver) { entityResolver_ = &resolver; }
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EntityResolverT* getEntityResolver() const { return entityResolver_; }
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void setErrorHandler(ErrorHandlerT& handler) { errorHandler_ = &errorHandler; }
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ErrorHandlerT* getErrorHandler() const { return errorHandler_; }
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bool parse(const stringT& systemId)
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{
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SAX::basic_InputSource<stringT> is(systemId);
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return parse(is);
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} // loadDOM
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bool parse(SAX::basic_InputSource<stringT>& source)
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{
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SAX::FeatureNames<stringT> fNames;
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SAX::PropertyNames<stringT> pNames;
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DOM::DOMImplementation<stringT> di = SimpleDOM::DOMImplementation<stringT, string_adaptorT>::getDOMImplementation();
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document_ = di.createDocument(SA_.makeStringT(""), SA_.makeStringT(""), 0);
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currentNode_ = document_;
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inCDATA_ = false;
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inEntity_ = 0;
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SAX_parser parser;
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parser.setContentHandler(*this);
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parser.setErrorHandler(*this);
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if(entityResolver_)
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parser.setEntityResolver(*entityResolver_);
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try
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{
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parser.setProperty(pNames.lexicalHandler, static_cast<SAX::basic_LexicalHandler<stringT>&>(*this));
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parser.setProperty(pNames.declHandler, static_cast<SAX::basic_DeclHandler<stringT>&>(*this));
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}
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catch(SAX::SAXException&)
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{
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} // catch
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parser.setFeature(fNames.namespaces, true);
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parser.setFeature(fNames.namespace_prefixes, true);
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//parser.setFeature(fNames.external_general, true);
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parser.parse(source);
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return (document_ != 0);
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} // loadDOM
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DOM::Document<stringT> getDocument() const
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{
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return document_;
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} // getDocument
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void reset()
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{
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currentNode_ = 0;
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document_ = 0;
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} // reset
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private:
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// no implementations
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Parser(const Parser&);
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bool operator==(const Parser&) const;
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Parser& operator=(const Parser&);
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// instance variables
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DOM::Document<stringT> document_;
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DocumentType<stringT, string_adaptorT >* documentType_;
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DOM::Node<stringT> currentNode_;
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DOM::Node<stringT> cachedCurrent_;
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std::string lastError_;
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bool inCDATA_;
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int inEntity_;
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string_adaptorT SA_;
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std::map<stringT, EntityT*> declaredEntities_;
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EntityResolverT* entityResolver_;
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ErrorHandlerT* errorHandler_;
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SAX::AttributeTypes<stringT, string_adaptorT> attributeTypes_;
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private:
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///////////////////////////////////////////////////////////
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// ContentHandler
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virtual void endDocument()
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{
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currentNode_ = 0;
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} // endDocument
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virtual void startElement(const stringT& namespaceURI, const stringT& localName,
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const stringT& qName, const SAX::basic_Attributes<stringT>& atts)
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{
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if(currentNode_ == 0)
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return;
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DOM::Element<stringT> elem = document_.createElementNS(namespaceURI, qName);
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currentNode_.appendChild(elem);
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// attributes here
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for(int i = 0; i < atts.getLength(); ++i)
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elem.setAttributeNS(atts.getURI(i), atts.getQName(i), atts.getValue(i));
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currentNode_ = elem;
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} // startElement
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virtual void endElement(const stringT& namespaceURI, const stringT& localName,
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const stringT& qName)
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{
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if(currentNode_ == 0)
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return;
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currentNode_ = currentNode_.getParentNode();
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} // endElement
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virtual void characters(const stringT& ch)
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{
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if(currentNode_ == 0)
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return;
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if(!inCDATA_)
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currentNode_.appendChild(document_.createTextNode(ch));
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else
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currentNode_.appendChild(document_.createCDATASection(ch));
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} // characters
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virtual void processingInstruction(const stringT& target, const stringT& data)
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{
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if(currentNode_ == 0)
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return;
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currentNode_.appendChild(document_.createProcessingInstruction(target, data));
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} // processingInstruction
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virtual void skippedEntity(const stringT& name)
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{
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if(currentNode_ == 0)
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return;
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currentNode_.appendChild(document_.createEntityReference(name));
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} // skippedEntity
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////////////////////////////////////////////////////
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// ErrorHandler
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virtual void warning(const SAXParseExceptionT& e)
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{
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if(errorHandler_)
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errorHandler_->warning(e);
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} // warning
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virtual void error(const SAXParseExceptionT& e)
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{
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if(errorHandler_)
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errorHandler_->error(e);
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reset();
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} // error
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virtual void fatalError(const SAXParseExceptionT& e)
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{
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if(errorHandler_)
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errorHandler_->fatalError(e);
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reset();
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} // fatalError
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/////////////////////////////////////////////////////
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// LexicalHandler
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virtual void startDTD(const stringT& name, const stringT& publicId, const stringT& systemId)
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{
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documentType_ = new DocumentType<stringT, string_adaptorT >(name, publicId, systemId);
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document_.insertBefore(documentType_, 0);
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} // startDTD
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virtual void endDTD()
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{
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documentType_->setReadOnly(true);
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} // endDTD
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virtual void startEntity(const stringT& name)
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{
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if(currentNode_ == 0)
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return;
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if(++inEntity_ == 1)
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{
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cachedCurrent_ = currentNode_;
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currentNode_ = declaredEntities_[name];
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if(currentNode_ != 0 && currentNode_.hasChildNodes() == true) // already populated
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currentNode_ = 0;
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}
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} // startEntity
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virtual void endEntity(const stringT& name)
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{
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if(--inEntity_ == 0)
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currentNode_ = cachedCurrent_;
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currentNode_.appendChild(document_.createEntityReference(name));
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} // endEntity
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virtual void startCDATA()
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{
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inCDATA_ = true;
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} // startCDATA
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virtual void endCDATA()
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{
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inCDATA_ = false;
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} // endCDATA
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virtual void comment(const stringT& text)
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{
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if(currentNode_ == 0)
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return;
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currentNode_.appendChild(document_.createComment(text));
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} // comment
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//////////////////////////////////////////////////////////////////////
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// DeclHandler
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virtual void elementDecl(const stringT& name, const stringT& model)
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{
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documentType_->addElement(new ElementT(0, name));
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} // elementDecl
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virtual void attributeDecl(const stringT& elementName,
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const stringT& attributeName,
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const stringT& type,
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const stringT& valueDefault,
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const stringT& value)
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{
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if(!value.empty())
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documentType_->addDefaultAttr(elementName, attributeName, value);
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if(type == attributeTypes_.id)
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documentType_->addElementId(attributeName);
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} // attributeDecl
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virtual void internalEntityDecl(const stringT& name, const stringT& value)
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{
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EntityT* entity = new EntityT(0, name, SA_.makeStringT(""), SA_.makeStringT(""), SA_.makeStringT(""));
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declaredEntities_.insert(std::make_pair(name, entity));
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documentType_->addEntity(entity);
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currentNode_ = entity;
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currentNode_.appendChild(document_.createTextNode(value));
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currentNode_ = document_;
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} // internalEntityDecl
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virtual void externalEntityDecl(const stringT& name, const stringT& publicId, const stringT& systemId)
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{
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EntityT* entity = new EntityT(0, name, publicId, systemId, SA_.makeStringT(""));
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currentNode_ = entity;
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declaredEntities_.insert(std::make_pair(name, entity)); // we'll populate it later
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documentType_->addEntity(entity);
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currentNode_ = document_;
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} // externalEntityDecl
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/////////////////////////////////////////////////////////////////////////
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// DTDHandler
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virtual void notationDecl(const stringT& name, const stringT& publicId, const stringT& systemId)
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{
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documentType_->addNotation(new NotationT(0, name, publicId, systemId));
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} // notationDecl
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virtual void unparsedEntityDecl(const stringT& name, const stringT& publicId, const stringT& systemId, const stringT& notationName)
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{
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documentType_->addEntity(new EntityT(0, name, publicId, systemId, notationName));
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} // unparsedEntityDecl
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}; // class Parser
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} // namespace
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#endif
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