--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/filemanager/src/fmbkupengine/inc/CMMCScBkupDataStrategies.h	Fri Apr 16 14:53:38 2010 +0300
@@ -0,0 +1,224 @@
+/*
+* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0""
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Declaration of CMMCScBkupDataStrategy 
+*     
+*
+*/
+
+#ifndef __CMMCSCBKUPDATASTRATEGIES_H__
+#define __CMMCSCBKUPDATASTRATEGIES_H__
+
+// User includes
+#include <f32file.h>
+
+// Constants
+const TBool KMMCScBkupUseTempFile = EFalse;
+
+
+/**
+*
+*
+* @since 3.0
+*/
+class CMMCScBkupDataStrategy : public CBase
+    {
+    public:
+
+        /**
+        * Factory method
+        */
+        static CMMCScBkupDataStrategy* ReadStrategyLC( const TDesC& aName, RFs& aFsSession );
+
+        /**
+        * Factory method
+        */
+        static CMMCScBkupDataStrategy* ReadStrategyLC( const TDesC& aName, RFs& aFsSession, TInt aStartOffset, TInt aLengthToRead );
+
+        /**
+        * Factory method
+        */
+        static CMMCScBkupDataStrategy* WriteStrategyLC( const TDesC& aName, RFs& aFsSession, TBool aUseTempFile );
+
+    public: // Framework API
+
+        /**
+        * Read data from the source
+        *
+        * @return TInt The amount of data read, or 0 if the end of file has been reached
+        */
+        virtual TInt Read(TDes8& aSink) = 0;
+
+        /**
+        * Write data to the source
+        *
+        * @return TInt KErrNone if success, KErrNotSupported if the strategy doesn't support writing
+        *         or any of the other System-Wide error codes upon failure.
+        */
+        virtual TInt Write(const TDesC8& aSource);
+        
+        /**
+        * Perform any final actions
+        *
+        * @return TInt an error code.
+        */
+        virtual TInt Finalize();
+
+    protected:
+
+        /**
+        * C++ Constructor
+        */
+        CMMCScBkupDataStrategy();
+
+    private: // Internal methods
+
+        /**
+        * Sets the offset and length
+        */
+        void SetOffsetAndLength(TInt aStartOffset, TInt aLengthToRead);
+
+    protected: // Internal
+        inline TInt Offset() const { return iOffset; }
+        inline TInt LengthToRead() const { return iLengthToRead; }
+        inline void SetOffset(TInt64 aOffset) { iOffset = aOffset; }
+
+    private: // Data members
+
+        //
+        TInt iOffset;
+        //
+        TInt iLengthToRead;
+    };
+
+
+
+
+
+
+
+/**
+*
+*
+* @since 3.0
+*/
+NONSHARABLE_CLASS(CMMCScBkupDataFileStrategy) : public CMMCScBkupDataStrategy
+    {
+    public:
+
+        /**
+        * Static constructor
+        */
+        static CMMCScBkupDataFileStrategy* NewForReadingL( const TDesC& aName, RFs& aFsSession );
+
+        /**
+        * Static constructor
+        */
+        static CMMCScBkupDataFileStrategy* NewForWritingL( const TDesC& aName, RFs& aFsSession, TBool aUseTempFile );
+
+        /**
+        * C++ Destructor
+        */
+        ~CMMCScBkupDataFileStrategy();
+
+    private:
+
+        /**
+        * C++ Constructor
+        */
+        CMMCScBkupDataFileStrategy( RFs& aFsSession, TBool aUseTempFile = EFalse );
+
+        /**
+        * Second phase construction
+        */
+        void ConstructL( const TDesC& aName, TUint aMode );
+
+    public: // From CMMCScBkupDataStrategy
+        TInt Read(TDes8& aSink);
+        TInt Write(const TDesC8& aSource);
+        TInt Finalize();
+
+    private: // Internal functions
+        
+        /**
+        *
+        */
+        static TInt PrepareToOverwriteFile( RFs& aFsSession, const TDesC& aFileName );
+    
+    private: // Data members
+
+        RFs& iFsSession;
+        //
+        RFile64 iFile;
+        //
+        TBool iUseTempFile;
+        //
+        HBufC* iFileName;
+        //
+        TFileName iTempFileName;
+    };
+
+
+
+
+
+
+
+/**
+*
+*
+* @since 3.0
+*/
+NONSHARABLE_CLASS(CMMCScBkupDataFileSectionReadStrategy) : public CMMCScBkupDataStrategy
+    {
+    public:
+
+        /**
+        * Static constructor
+        */
+        static CMMCScBkupDataFileSectionReadStrategy* NewL(const TDesC& aName, RFs& aFsSession);
+
+        /**
+        * C++ Destructor
+        */
+        ~CMMCScBkupDataFileSectionReadStrategy();
+
+    private:
+
+        /**
+        * C++ Constructor
+        */
+        CMMCScBkupDataFileSectionReadStrategy(RFs& aFsSession);
+
+        /**
+        *
+        */
+        void ConstructL(const TDesC& aName);
+
+    public: // From CMMCScBkupDataStrategy
+        TInt Read(TDes8& aSink);
+
+    private: // Data members
+
+        //
+        RFs& iFsSession;
+        //
+        HBufC* iFileName;
+    };
+
+
+
+
+#endif // __CMMCSCBKUPDATASTRATEGIES_H__
+
+//End of File