| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * $Id$ |
| */ |
| |
| /* |
| * 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> |
| #include <xercesc/util/OutOfMemoryException.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*[]) |
| { |
| // 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 |
| int errorCode = 0; |
| 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; |
| errorCode = 1; |
| } |
| if(errorCode) { |
| XMLPlatformUtils::Terminate(); |
| return errorCode; |
| } |
| |
| { |
| // 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")); |
| |
| if (impl != NULL) |
| { |
| try |
| { |
| 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. |
| // |
| |
| const XMLSize_t elementCount = doc->getElementsByTagName(X("*"))->getLength(); |
| XERCES_STD_QUALIFIER cout << "The tree just created contains: " << elementCount |
| << " elements." << XERCES_STD_QUALIFIER endl; |
| |
| doc->release(); |
| } |
| catch (const OutOfMemoryException&) |
| { |
| XERCES_STD_QUALIFIER cerr << "OutOfMemoryException" << XERCES_STD_QUALIFIER endl; |
| errorCode = 5; |
| } |
| catch (const DOMException& e) |
| { |
| XERCES_STD_QUALIFIER cerr << "DOMException code is: " << e.code << XERCES_STD_QUALIFIER endl; |
| errorCode = 2; |
| } |
| catch (...) |
| { |
| XERCES_STD_QUALIFIER cerr << "An error occurred creating the document" << XERCES_STD_QUALIFIER endl; |
| errorCode = 3; |
| } |
| } // (inpl != NULL) |
| else |
| { |
| XERCES_STD_QUALIFIER cerr << "Requested implementation is not supported" << XERCES_STD_QUALIFIER endl; |
| errorCode = 4; |
| } |
| } |
| |
| XMLPlatformUtils::Terminate(); |
| return errorCode; |
| } |