/* * The Apache Software License, Version 1.1 * * Copyright (c) 1999-2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. 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. * * 3. 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For more information * on the Apache Software Foundation, please see * <http://www.apache.org/>. */ /* * $Id$ */ /* * This sample illustrates how you can create a DOM tree in memory. * It then prints the count of elements in the tree. */ // --------------------------------------------------------------------------- // Includes // --------------------------------------------------------------------------- #include <xercesc/util/PlatformUtils.hpp> #include <xercesc/util/XMLString.hpp> #include <xercesc/dom/DOM.hpp> #if defined(XERCES_NEW_IOSTREAMS) #include <iostream> #else #include <iostream.h> #endif XERCES_CPP_NAMESPACE_USE // --------------------------------------------------------------------------- // This is a simple class that lets us do easy (though not terribly efficient) // trancoding of char* data to XMLCh data. // --------------------------------------------------------------------------- class XStr { public : // ----------------------------------------------------------------------- // Constructors and Destructor // ----------------------------------------------------------------------- XStr(const char* const toTranscode) { // Call the private transcoding method fUnicodeForm = XMLString::transcode(toTranscode); } ~XStr() { XMLString::release(&fUnicodeForm); } // ----------------------------------------------------------------------- // Getter methods // ----------------------------------------------------------------------- const XMLCh* unicodeForm() const { return fUnicodeForm; } private : // ----------------------------------------------------------------------- // Private data members // // fUnicodeForm // This is the Unicode XMLCh format of the string. // ----------------------------------------------------------------------- XMLCh* fUnicodeForm; }; #define X(str) XStr(str).unicodeForm() // --------------------------------------------------------------------------- // main // --------------------------------------------------------------------------- int main(int argC, char* argV[]) { // Initialize the XML4C2 system. try { XMLPlatformUtils::Initialize(); } catch(const XMLException& toCatch) { char *pMsg = XMLString::transcode(toCatch.getMessage()); XERCES_STD_QUALIFIER cerr << "Error during Xerces-c Initialization.\n" << " Exception message:" << pMsg; XMLString::release(&pMsg); return 1; } // Watch for special case help request if (argC > 1) { XERCES_STD_QUALIFIER cout << "\nUsage:\n" " CreateDOMDocument\n\n" "This program creates a new DOM document from scratch in memory.\n" "It then prints the count of elements in the tree.\n" << XERCES_STD_QUALIFIER endl; XMLPlatformUtils::Terminate(); return 1; } { // Nest entire test in an inner block. // The tree we create below is the same that the XercesDOMParser would // have created, except that no whitespace text nodes would be created. // <company> // <product>Xerces-C</product> // <category idea='great'>XML Parsing Tools</category> // <developedBy>Apache Software Foundation</developedBy> // </company> DOMImplementation* impl = DOMImplementationRegistry::getDOMImplementation(X("Core")); DOMDocument* doc = impl->createDocument( 0, // root element namespace URI. X("company"), // root element name 0); // document type object (DTD). DOMElement* rootElem = doc->getDocumentElement(); DOMElement* prodElem = doc->createElement(X("product")); rootElem->appendChild(prodElem); DOMText* prodDataVal = doc->createTextNode(X("Xerces-C")); prodElem->appendChild(prodDataVal); DOMElement* catElem = doc->createElement(X("category")); rootElem->appendChild(catElem); catElem->setAttribute(X("idea"), X("great")); DOMText* catDataVal = doc->createTextNode(X("XML Parsing Tools")); catElem->appendChild(catDataVal); DOMElement* devByElem = doc->createElement(X("developedBy")); rootElem->appendChild(devByElem); DOMText* devByDataVal = doc->createTextNode(X("Apache Software Foundation")); devByElem->appendChild(devByDataVal); // // Now count the number of elements in the above DOM tree. // unsigned int elementCount = doc->getElementsByTagName(X("*"))->getLength(); XERCES_STD_QUALIFIER cout << "The tree just created contains: " << elementCount << " elements." << XERCES_STD_QUALIFIER endl; doc->release(); } XMLPlatformUtils::Terminate(); return 0; }