symbian下面xml的解析器

下面是symbian s60下的一个调用解析器的例子程序：
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/*****************************************************************
* Elements.cpp
*
* Copyright 1999, Clark Cooper, 2004 ToddSoftware
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the license contained in the
* COPYING file that comes with the expat distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Read an XML document that is stored in a string and display the results
*
* Almost all the guts of the system revolve around the doExampleL()
* function which does everything important.
* The rest is just plumbing
*/
#include <e32base.h>
#include "SyExpat.h"
#include <e32test.h>
#include "xmlhelper.h"

// String constants
_LIT(KTxtEPOC32EX,"EXAMPLES");
_LIT(KTxtExampleCode,"Expat Elements");

_LIT(KTxtParsedOk, "XML Successfully parser");
_LIT(KTxtParsedFailedOn, "XML Failed on Line %d Column %d");

_LIT(KTxtFailed, "Failed parsing");
_LIT(KTxtOk, "Ok");

_LIT(KTxtPressAnyKey," [press any key]");

LOCAL_D RTest test(_L("XML String"));

LOCAL_D CTrapCleanup* theCleanup;


LOCAL_C void doExampleL()
{
       
        // 1. Create the XML Parser        and set the default document handler       
        CDocumentHandler        xmlOutput(test);
        CDeclarationHandler        xmlOutput2(test);
       
#define _CONTEXTUAL_PARSER
#ifdef _CONTEXTUAL_PARSER
        CSyContextualParser* reader = CSyContextualParser::NewLC(TPtrC());
        reader->PushDocHandler(&xmlOutput);
        reader->PushDeclHandler(&xmlOutput2);
#else
        CSyParser* reader = CSyParser::NewLC(TPtrC());
        reader->SetHandler(&xmlOutput);
        reader->SetHandler(&xmlOutput2);
#endif

       
        _LIT8(KDocument, "<?xml version=/"1.0/" standalone=/"yes/"?>"
                                         "<test>"
                                         "   <elem1>"
                                         "     <elem11>"
                                                      "cdata11"
                                         "     </elem11>"
                                         "     <elem12>"
                                                    "cdata12"
                                         "     </elem12>"
                                         "   </elem1>"
                                         "<!-- This is a comment -->"
                                         "   <elem2 attr=/"test/" attr2=/"test2/" attr3=/"test3/"/>"
                                         "   <elem3 attr=/"test3/"/>"
                                         "   <elem4>"
                                               "text"
                                         "   </elem4>"
                                         "</test>");

        TPtrC8 doc(KDocument);
        TSyExpatStatus status = reader->Parse(doc, ETrue);
        if (status == EStatusOk)
        {
                test.Printf(KTxtParsedOk);
        }
        else
        {
                test.Printf(KTxtParsedFailedOn, reader->GetCurrentLineNumber(), reader->GetCurrentColumnNumber());
        }
       
#ifdef _CONTEXTUAL_PARSER
        reader->PopDocHandler();
        reader->PopDeclHandler();
#endif

        // finally clean up the parser and return
        CleanupStack::PopAndDestroy();
}

LOCAL_C void callExampleL() // initialize and call example code under cleanup stack
{
        TRAPD(error,doExampleL()); // perform example function
        if (error)
                test.Printf(KTxtFailed, error);
        else
                test.Printf(KTxtOk);
        test.Printf(KTxtPressAnyKey);
        test.Getch(); // get and ignore character
}

GLDEF_C TInt E32Main() // main function called by E32
{
        __UHEAP_MARK;
        test.Start(_L("ParseXMLString"));
        test.Title();

        theCleanup=CTrapCleanup::New();

        TRAPD(ret,callExampleL());       

        delete theCleanup;       

        test.End();

        test.Close();

        __UHEAP_MARKEND;

        return(KErrNone);
}