TB10.1 Example Applications: examples/SysLibs/ResourceFiles/MultiRead1/MultiRead.h Source File

00001 // Copyright (c) 2000-2009 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 // define the multiple resource file reader class
-00015 // for use in MultiRead1 and MultiRead2 examples
-00016 //
-00017 
-00018 #ifndef __MultiRead_H
-00019 #define __MultiRead_H
-00020 
-00021 class CMultipleResourceFileReader : public CBase
-00022         {
-00023 public:
-00024         // construct/destruct
-00025         ~CMultipleResourceFileReader();
-00026         static CMultipleResourceFileReader* NewLC();
-00027         // add resource file
-00028         void AddResourceFileL(const TDesC& aName, TInt aVersion);
-00029         HBufC8* AllocReadLC(TInt aResourceId);
-00030 private:
-00031         // construct/destruct
-00032         void ConstructL();
-00033 private:
-00034         CArrayFixFlat<RResourceFile>* iResourceFiles;
-00035         };
-00036 
-00037 // construct/destruct
-00038 
-00039 CMultipleResourceFileReader* CMultipleResourceFileReader::NewLC()
-00040         {
-00041         CMultipleResourceFileReader* self=new (ELeave) CMultipleResourceFileReader;
-00042         CleanupStack::PushL(self);
-00043         self->ConstructL();
-00044         return self;
-00045         }
-00046 
-00047 void CMultipleResourceFileReader::ConstructL()
-00048         {
-00049         iResourceFiles=new (ELeave) CArrayFixFlat<RResourceFile> (2);
-00050                 // new array of resource files
-00051                 // typically two in an application, so use granularity 2
-00052         }
-00053 
-00054 CMultipleResourceFileReader::~CMultipleResourceFileReader()
-00055         {
-00056         if (iResourceFiles)
-00057                 {
-00058                 for (TInt i=0; i < iResourceFiles->Count(); i++)
-00059                         (*iResourceFiles)[i].Close(); // close each resource file
-00060                 delete iResourceFiles; // and destroy container
-00061                 }
-00062         }
-00063 
-00064 // manipulate resource files and resources
-00065 
-00066 void CMultipleResourceFileReader::AddResourceFileL(const TDesC& aName, TInt aVersion)
-00067         {
-00068         _LIT(KAddingResourceFile,"Adding resource file %S, version %d: will be file %d\n");
-00069         console->Printf(KAddingResourceFile,
-00070                         &aName, aVersion, iResourceFiles->Count()
-00071                         );
-00072         RResourceFile file;
-00073         file.OpenL(fsSession,aName); // open resource file
-00074         TRAPD(error,file.ConfirmSignatureL(aVersion)); // confirm its signature
-00075         if (error!=KErrNone)
-00076                 {
-00077                 file.Close();
-00078                 User::Leave(error);
-00079                 }
-00080         TRAP(error,iResourceFiles->AppendL(file))
-00081         if (error!=KErrNone)
-00082                 {
-00083                 file.Close();
-00084                 User::Leave(error);
-00085                 }
-00086         return;
-00087         }
-00088 
-00089 HBufC8* CMultipleResourceFileReader::AllocReadLC(TInt aResourceId)
-00090         {
-00091         _LIT(KReadingResource,"Reading resource %08X\n");
-00092         _LIT(KOwnedByFile,"   Owned by file %d\n");
-00093 
-00094         console->Printf(KReadingResource,aResourceId);
-00095         for (TInt i=0; i < iResourceFiles->Count(); i++)
-00096                 { // scan all resource files to find owner
-00097                 RResourceFile& file=(*iResourceFiles)[i]; // get resource file
-00098                 if (!file.OwnsResourceId(aResourceId))
-00099                         continue; // continue if not owner
-00100                 console->Printf(KOwnedByFile,i);
-00101                 return file.AllocReadLC(aResourceId);
-00102                                 // return resource from owning file (if present)
-00103                 }
-00104         User::Leave(KErrNotFound);
-00105         return 0; // can never be executed, but keeps compiler happy
-00106         }
-00107 
-00108 #endif
-