TB10.1 Example Applications: examples/SysLibs/XmlExample/xmlexample.cpp Source File

00001 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
-00002 // All rights reserved.
-00003 // This component and the accompanying materials are made available
-00004 // under the terms of "Eclipse Public License v1.0"
-00005 // which accompanies this distribution, and is available
-00006 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
-00007 //
-00008 // Initial Contributors:
-00009 // Nokia Corporation - initial contribution.
-00010 //
-00011 // Contributors:
-00012 //
-00013 // Description:
-00014 // This example program demonstrates the use of XML Framework APIs. 
-00015 // The code implements all the functions of MContentHandler class.
-00016 // The example parses the XML file and WBXML file present in the specified path. To know how to 
-00017 // write an XML file you can refer to this URL http://www.w3schools.com/xml/.
-00018 //
-00019 
-00020 
-00021 
-00025 #include "xmlexample.h"
-00026 #include <xml/documentparameters.h>
-00027 #include <xml/parserfeature.h>
-00028 #include <xml/matchdata.h>
-00029 #include <e32cons.h>
-00030 
-00031 using namespace Xml;
-00032 
-00033 _LIT(KTitle, "XML example");
-00034 _LIT(KStartKey, "\nThe example parses the given XML and WBXML files. Press any key to start\n");
-00035 _LIT(KPressAKey,"\nPress any key to continue \n");
-00036 _LIT(KExit,"\n Press any key to exit the application \n");
-00037 _LIT(KParsingXml,"\nParsing the XML file");
-00038 _LIT(KParsingWbXml,"\nParsing the WBXML file");
-00039 _LIT(KParsingMatch,"\nParsing the XML file using match data criteria");
-00040 _LIT(KError,"\n Could not open the XML file. Please check if the file exists.");
-00041 
-00042 _LIT(KOnStartDoc,"\n<!-- CXmlExample::OnStartDocumentL -->\n");
-00043 _LIT(KOnEndDoc,"\n<!-- CXmlExample::OnEndDocumentL -->\n");
-00044 _LIT(KOnContent,"<!-- CXmlExample::OnContentL -->");
-00045 _LIT(KOnProcInstrn,"\n<!-- CXmlExample::OnProcessingInstructionL -->\n");
-00046 _LIT(KOnError,"CXmlExample::OnError - ERROR: code=%d\n");
-00047 
-00048 _LIT(KVersion,"<?xml version=\"1.0\" encoding=\"%S\"?>\n");
-00049 _LIT(KStartElement,"\nStart of element: <%S>\n");
-00050 _LIT(KEndElement,"\nEnd of element: </%S>\n");
-00051 _LIT(KContent,"%S\n");
-00052 _LIT(KAttrib,"The attribute of element <%S>=\"%S\"");
-00053 _LIT(KProcInstrn,"<?%S %S?>\n");
-00054 _LIT(KOnSkipped, "Found skipped entity %S");
-00055 _LIT(KNameSpaceRep,"\nNamespace mapping reporting enabled\n ");
-00056 _LIT(KPrefixMap, "\nThe prefix is %S and URI is %S\n");
-00057 _LIT(KPrefixEnd, "End of prefix URI mapping %S\n");
-00058 
-00059 _LIT(KSimpleXmlFile,    "z:\\private\\E80000AE\\xmlexample.xml");
-00060 _LIT(KSimpleWbXmlFile,    "z:\\private\\E80000AE\\xmlexample.wbxml");
-00061 _LIT8(KXmlMimeType, "text/xml");
-00062 _LIT8(KWbxmlMimeType, "text/wbxml");
-00063 
-00068 CXmlExample* CXmlExample::NewL()
-00069         {
-00070         CXmlExample* self = new (ELeave) CXmlExample();
-00071         CleanupStack::PushL(self);
-00072         self->ConstructL();
-00073         CleanupStack::Pop();
-00074         return self;
-00075         }
-00076 
-00077 CXmlExample::CXmlExample()
-00078         :iError(KErrNone)
-00079         {
-00080         }
-00081 
-00082 void CXmlExample::ConstructL()
-00083         {
-00084         iConsole = Console::NewL(KTitle,TSize(KConsFullScreen,KConsFullScreen));
-00085         iConsole->Printf ( KStartKey);
-00086         iConsole->Getch ();
-00087         }
-00088 
-00092 CXmlExample::~CXmlExample()
-00093         {
-00094         iConsole->Printf(KExit);
-00095         iConsole->Getch();
-00096         delete iConsole;
-00097         }
-00098 
-00109 void CXmlExample::OnStartDocumentL(const RDocumentParameters& aDocParam, TInt aErrorCode)
-00110         {
-00111         User::LeaveIfError(aErrorCode);
-00112         iConsole->Printf(KOnStartDoc);
-00113 
-00114         const TDesC8& encoding8 = aDocParam.CharacterSetName().DesC();
-00115         HBufC* encoding16= Copy8To16LC(encoding8);
-00116 
-00117         iConsole->Printf(KVersion, encoding16);
-00118         CleanupStack::PopAndDestroy(encoding16);
-00119 
-00120         }
-00121         
-00130 void CXmlExample::OnEndDocumentL(TInt aErrorCode)
-00131         {
-00132         User::LeaveIfError(aErrorCode);
-00133         iConsole->Printf(KOnEndDoc);
-00134         User::After(700000); // 0.7 seconds
-00135         }
-00136 
-00148 void CXmlExample::OnStartElementL(const RTagInfo& aElement, const RAttributeArray& aAttributes, TInt aErrorCode)
-00149         {
-00150         User::LeaveIfError(aErrorCode);
-00151 
-00152         const TDesC8& localName8 = aElement.LocalName().DesC();
-00153         
-00154         HBufC* localName16 = Copy8To16LC(localName8);
-00155         
-00156         iConsole->Printf(KStartElement,localName16);
-00157 
-00158         CleanupStack::PopAndDestroy();  // Delete localName16
-00159 
-00160         TInt nAttributes = aAttributes.Count();
-00161         for(TInt i=0; i<nAttributes; i++)
-00162                 {
-00163                 const RAttribute& attribute = aAttributes[i];
-00164                 const RTagInfo& nameInfo = attribute.Attribute();
-00165 
-00166                 const TDesC8& localName8 = nameInfo.LocalName().DesC();
-00167                 const TDesC8& value8 = attribute.Value().DesC();
-00168 
-00169                 HBufC* localName16 = Copy8To16LC(localName8);
-00170                 HBufC* value16 = Copy8To16LC(value8);
-00171 
-00172                 iConsole->Printf(KAttrib, localName16, value16);
-00173                 CleanupStack::PopAndDestroy(2,localName16);
-00174                 }
-00175         User::After(700000); // 0.7 sec
-00176 
-00177         }
-00178 
-00189 void CXmlExample::OnEndElementL(const RTagInfo& aElement, TInt aErrorCode)
-00190         {
-00191         User::LeaveIfError(aErrorCode);
-00192         
-00193         const TDesC8& localName8 = aElement.LocalName().DesC();
-00194         HBufC* endBuf16 = Copy8To16LC(localName8);
-00195         
-00196         iConsole->Printf(KEndElement,endBuf16);
-00197         
-00198          CleanupStack::PopAndDestroy(endBuf16);
-00199         }
-00200 
-00205 HBufC* CXmlExample::Copy8To16LC(const TDesC8& aDes)
-00206         {
-00207         HBufC* buf16 = HBufC::NewLC(aDes.Length());
-00208         buf16->Des().Copy(aDes);
-00209         return buf16; 
-00210         }
-00211 
-00212 
-00228 void CXmlExample::OnContentL(const TDesC8& aData8, TInt aErrorCode)
-00229         {
-00230         User::LeaveIfError(aErrorCode);
-00231         iConsole->Printf(KOnContent);
-00232         
-00233         HBufC* data16 = Copy8To16LC(aData8);
-00234         
-00235         iConsole->Printf(KContent,data16);      
-00236         
-00237         CleanupStack::PopAndDestroy(data16);
-00238         
-00239         }
-00240 
-00252  void CXmlExample::OnProcessingInstructionL(const TDesC8& aTarget8, const TDesC8& aData8, TInt aErrorCode)
-00253         {
-00254         User::LeaveIfError(aErrorCode);
-00255         iConsole->Printf(KOnProcInstrn);
-00256 
-00257 
-00258         HBufC* target16 = Copy8To16LC(aTarget8);
-00259         HBufC* data16 = Copy8To16LC(aData8);
-00260 
-00261         iConsole->Printf(KProcInstrn,target16,data16);
-00262         CleanupStack::PopAndDestroy(2,target16);
-00263         User::After(700000); // 0.7 sec
-00264         }
-00265 
-00272 void CXmlExample::OnError(TInt aError)
-00273         {
-00274         iError = aError;
-00275         iConsole->Printf(KOnError,aError);
-00276         iConsole->Printf(KPressAKey);
-00277         iConsole->Getch();
-00278         }
-00279 
-00283 TAny* CXmlExample::GetExtendedInterface(const TInt32 /*aUid*/)
-00284         {
-00285         // do nothing.
-00286         return NULL;
-00287         }
-00288         
-00300 void CXmlExample::OnStartPrefixMappingL(const RString& aPrefix, const RString& aUri, TInt aErrorCode)
-00301         {
-00302         User::LeaveIfError(aErrorCode);
-00303         const TDesC8& localPrefix8 = aPrefix.DesC();
-00304         HBufC* temp1 = Copy8To16LC(localPrefix8);
-00305         const TDesC8& localUri8 = aUri.DesC();
-00306         HBufC* temp2 = Copy8To16LC(localUri8);
-00307         
-00308         iConsole->Printf(KPrefixMap, temp1, temp2);
-00309         CleanupStack::PopAndDestroy(2, temp1);
-00310         
-00311         iConsole->Printf(KPressAKey);
-00312         iConsole->Getch();
-00313                 
-00314         }
-00315         
-00319 void CXmlExample::OnEndPrefixMappingL(const RString& aPrefix, TInt aErrorCode)
-00320         {
-00321         User::LeaveIfError(aErrorCode);
-00322         const TDesC8& localPrefix8 = aPrefix.DesC();
-00323         HBufC* temp = Copy8To16LC(localPrefix8);
-00324         iConsole->Printf(KPrefixEnd, temp);
-00325         CleanupStack::PopAndDestroy(temp);
-00326         }
-00327 
-00331 void CXmlExample::OnIgnorableWhiteSpaceL(const TDesC8&, TInt)
-00332         {
-00333         
-00334         }
-00335 
-00347 void CXmlExample::OnSkippedEntityL(const RString& aName, TInt aErrorCode)
-00348         {
-00349         User::LeaveIfError(aErrorCode);
-00350         
-00351         const TDesC8& localName8 = aName.DesC();
-00352         HBufC* temp = Copy8To16LC(localName8);
-00353         
-00354         iConsole->Printf(KOnSkipped, temp);
-00355         CleanupStack::PopAndDestroy(temp);
-00356         User::After(700000); // 0.7 sec delay           
-00357         }
-00358 
-00362 void CXmlExample::ParseExampleDocumentsL()
-00363         {
-00364         RFs fs;
-00365         User::LeaveIfError(fs.Connect());
-00366         CleanupClosePushL(fs);
-00367 
-00368         RFile handle;
-00369         TInt err;
-00370         // Open an example XML file for parsing
-00371         TRAP(err,handle.Open(fs, KSimpleXmlFile, EFileShareReadersOnly));
-00372         if (err != KErrNone)
-00373                 {
-00374                 iConsole->Printf(KError);
-00375                 User::Leave(err);
-00376                 }
-00377         CleanupClosePushL(handle);
-00378 
-00379         // Open parser session for text/xml mime type
-00380         CParser* parser = CParser::NewLC(KXmlMimeType, *this);
-00381         
-00382         iConsole->Printf(KParsingXml);
-00383         iConsole->Printf(KPressAKey);
-00384         iConsole->Getch();
-00385         
-00386         err = parser->EnableFeature(EReportNamespaceMapping);
-00387          
-00388         if(err==KErrNone) 
-00389         {
-00390         iConsole->Printf(KNameSpaceRep);
-00391         } 
-00392 
-00393         // Starts parser session
-00394         ParseL(*parser, handle); // this will result in callbacks to handler
-00395         
-00396         // Closes the parser session.
-00397         CleanupStack::PopAndDestroy(parser);
-00398         CleanupStack::Pop(&handle);
-00399 
-00400         // Open an example WBXML file for parsing
-00401         TRAP(err,handle.Open(fs, KSimpleWbXmlFile, EFileShareReadersOnly));
-00402         if (err != KErrNone)
-00403                 {
-00404                 iConsole->Printf(KError);
-00405                 User::Leave(err);
-00406                 }
-00407         CleanupClosePushL(handle);
-00408 
-00409         parser = CParser::NewLC(KWbxmlMimeType, *this);
-00410         
-00411         iConsole->Printf(KParsingWbXml);
-00412         iConsole->Printf(KPressAKey);
-00413         iConsole->Getch();
-00414         
-00415         // Starts parser session and active scheduler.
-00416         ParseL(*parser, handle); // this will result in callbacks to handler
-00417 
-00418         CleanupStack::PopAndDestroy(parser);
-00419         CleanupStack::Pop(&handle);
-00420 
-00421         // Open an example XML file for parsing using a parser specified with 
-00422         // MatchData. In this case, the default Symbian platform parser is requested.
-00423         
-00424         TRAP(err,handle.Open(fs, KSimpleXmlFile, EFileShareReadersOnly));
-00425         if (err != KErrNone)
-00426                 {
-00427                 iConsole->Printf(KError);
-00428                 User::Leave(err);
-00429                 }       
-00430         CleanupClosePushL(handle);
-00431 
-00432         CMatchData *matchData = CMatchData::NewLC();
-00433         matchData->SetMimeTypeL(KXmlMimeType);
-00434         matchData->SetVariantL(_L8("Symbian"));
-00435         
-00436         iConsole->Printf(KParsingMatch);
-00437         iConsole->Printf(KPressAKey);
-00438         iConsole->Getch();
-00439         
-00440         parser = CParser::NewLC(*matchData, *this);
-00441         ParseL(*parser, handle);
-00442         
-00443         CleanupStack::PopAndDestroy(2,matchData);
-00444         CleanupStack::PopAndDestroy(&handle);
-00445         CleanupStack::PopAndDestroy(&fs);
-00446         
-00447         }
-00448 
-00449 LOCAL_C void MainL()
-00450         {
-00451         CXmlExample* app = CXmlExample::NewL();
-00452         CleanupStack::PushL(app);
-00453         
-00454         app->ParseExampleDocumentsL();
-00455         CleanupStack::PopAndDestroy(app);
-00456 
-00457         }
-00458 
-00459 GLDEF_C TInt E32Main()
-00460         {
-00461     __UHEAP_MARK;
-00462     CTrapCleanup* cleanup = CTrapCleanup::New();
-00463     if(cleanup == NULL)
-00464         {
-00465         return KErrNoMemory;
-00466         }
-00467     TRAPD(err, MainL());
-00468         if(err != KErrNone)
-00469                 {
-00470                 User::Panic(_L("Failed to complete"),err);
-00471                 }
-00472 
-00473     delete cleanup;
-00474     __UHEAP_MARKEND;
-00475     return KErrNone;
-00476         }
-00477 
-00478 
-00479 
-