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Różnice między wybraną wersją a wersją aktualną.

--- xerces_dom [2008/04/15 00:37]
kmioduszewski
+++ xerces_dom [2008/04/15 02:01]
kmioduszewski
@@ Linia 139: / Linia 139: @@
 </code>
@@ Linia 158: / Linia 164: @@
 <!DOCTYPE notes SYSTEM "note.dtd">
 <notes owner="John Doe">
    <note date="21/02/2008">
       <from>Jani</from>
@@ Linia 181: / Linia 186: @@
   <!ELEMENT body    (#PCDATA)>
 </code>
-Klasy pomocnicze:
+Klasy pomocnicze ''support.h'':
 <code cpp>
+#include <string>
+#include <iostream>
 #include <xercesc/util/XMLString.hpp>
+#include <xercesc/sax/HandlerBase.hpp>
+//klasa pomocnicza ułatwiająca współpracę z XMLCh*
+class UniString {
+public :
+	UniString(const XMLCh* const str)
+	:
+		cString(xercesc::XMLString::transcode(str)),
+		xmlString(xercesc::XMLString::replicate(str))
+	{}
+	UniString(const char* const str)
+	:
+		cString(xercesc::XMLString::replicate(str)),
+		xmlString(xercesc::XMLString::transcode(str))
+	{}
+	UniString(const std::string& str)
+	:
+		cString(xercesc::XMLString::replicate(str.c_str())),
+		xmlString(xercesc::XMLString::transcode(str.c_str()))
+	{}
+	~UniString()
+	{
+		xercesc::XMLString::release(&cString);
+		xercesc::XMLString::release(&xmlString);
+	}
+	const char* toCString() 	{ return cString; }
+	const XMLCh* toXMLString() 	{ return xmlString; }
+	std::ostream& print(std::ostream& s) const
+	{
+		s << cString;
+		return(s);
+	}
+private :
+	char*   cString;
+	XMLCh*  xmlString;
+};
+std::ostream& operator<<( std::ostream& s, const UniString& str ) { return str.print(s); }
+//klasa pomocnicza przechowująca nazwy tagów oraz atrybutów
+class docNames {
+public:
+	const UniString TAG_NOTES;
+	const UniString TAG_NOTE;
+	const UniString TAG_FROM;
+	const UniString TAG_HEADING;
+	const UniString TAG_BODY;
+	const UniString ATTR_OWNER;
+	const UniString ATTR_DATE;
+	docNames()
+		:
+		TAG_NOTES("notes"),
+		TAG_NOTE("note"),
+		TAG_FROM("from"),
+		TAG_HEADING("heading"),
+		TAG_BODY("body"),
+		ATTR_OWNER("owner"),
+		ATTR_DATE("date")
+	{}
+};
-//klasa pomocnicza przechowujaca nazwy tagów oraz atrybutów w formacie XMLCh*
+class myErrorHandler : xercesc::HandlerBase {
-class TagNames {
+	void warning( const xercesc::SAXParseException& e ) {
-	public:
+		std::cout << "warning: " << UniString(e.getMessage())
-	XMLCh* TAG_NOTES;
+				  << " | line: " << e.getLineNumber() << std::endl;
-	XMLCh* TAG_NOTE;
+	}
-	XMLCh* TAG_FROM;
+	void error( const xercesc::SAXParseException& e ) {
-	XMLCh* TAG_HEADING;
+		std::cout << "error: " << UniString(e.getMessage())
-	XMLCh* TAG_BODY;
+			<< " | line: " << e.getLineNumber() << std::endl;
+	}
+	void fatalError( const xercesc::SAXParseException& e ) {
+		std::cout << "fatalError: " << UniString(e.getMessage())
+			<< " | line: " <<e.getLineNumber() << std::endl;
+	}
+	void resetErrors() {}
+};
+</code>
+''parser.cpp''
+<code cpp>
+#include "support.h"
-	XMLCh* ATTR_OWNER;
+xercesc::DOMDocument* parseXML() {
-	XMLCh* ATTR_DATE;
+	xercesc::XercesDOMParser* parser = new xercesc::XercesDOMParser();
+	parser->setValidationScheme(xercesc::XercesDOMParser::Val_Auto);
+	parser->setDoNamespaces(true);
+	xercesc::ErrorHandler* errHandler = (xercesc::ErrorHandler*) new myErrorHandler();
+	parser->setErrorHandler(errHandler);
-	TagNames()
+	UniString src = UniString("dupa.xml");
-		:
+	try {
-		TAG_NOTES(xercesc::XMLString::transcode("notes")),
+		parser->parse(src.toXMLString());
-		TAG_NOTE(xercesc::XMLString::transcode("note")),
+	}
-		TAG_FROM(xercesc::XMLString::transcode("from")),
+	catch (...) {
-		TAG_HEADING(xercesc::XMLString::transcode("heading")),
+		//...
-		TAG_BODY(xercesc::XMLString::transcode("body")),
+	}
-		ATTR_OWNER(xercesc::XMLString::transcode("owner")),
+	if(parser->getErrorCount()==0) {
-		ATTR_DATE(xercesc::XMLString::transcode("date"))
+		return parser->getDocument();
-	{}
+	} else {
+		return NULL;
+	}
+}
-	~TagNames() throw(){
+int main() {
+	try {
+		xercesc::XMLPlatformUtils::Initialize();
+	}
+	catch (const xercesc::XMLException& e) {
+		std::cerr << UniString(e.getMessage()) << std::endl;
+		return 1;
+	}
+	xercesc::DOMDocument* xmlDoc = parseXML();
+	if(xmlDoc == NULL)
+		return -1;
-		try{
-			xercesc::XMLString::release(&TAG_NOTES);
-			xercesc::XMLString::release(&TAG_NOTE);
-			xercesc::XMLString::release(&TAG_FROM);
-			xercesc::XMLString::release(&TAG_HEADING);
-			xercesc::XMLString::release(&TAG_BODY);
-			xercesc::XMLString::release(&ATTR_OWNER);
+	xercesc::XMLPlatformUtils::Terminate();
-			xercesc::XMLString::release(&ATTR_DATE);
-		}catch( ... ){
+	int a;
-			std::cerr << "TagNames destructor error" << std::endl ;
+	std::cin >> a;
-		}
+	return 0;
-	}
 }
 </code>
 <code cpp>
 //...

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