filemanager/bkupengine/inc/CMMCScBkupArchiveDataManager.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 18 Jan 2010 20:09:41 +0200
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/*
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* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0""
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Declaration of CMMCScBkupArchiveDataManager
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*     
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*
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*/
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#ifndef __CMMCSCBKUPARCHIVEDATAMANAGER_H__
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#define __CMMCSCBKUPARCHIVEDATAMANAGER_H__
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// System includes
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#include <f32file.h>
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#include <s32strm.h>
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// User includes
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#include "CMMCScBkupBufferManagers.h"
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#include "MMMCScBkupArchiveDataInterface.h"
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#include "TMMCScBkupArchiveVector.h"
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#include "RMMCScBkupArchiveStreams.h"
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#include "MMCScBkupOperations.h"
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#include "MMCScBkupConfig.h"
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// Classes referenced
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class CEZCompressor;
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class CEZDecompressor;
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class RMMCScBkupArchiveBuf;
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class MMMCScBkupProgressObserver;
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/**
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*
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*
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* @since 3.0
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*/
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NONSHARABLE_CLASS(CMMCScBkupArchiveDataManager) : public CActive, public MMMCScBkupArchiveDataInterface
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    {
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    public:
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        /**
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        * Static constructor
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        */
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        static CMMCScBkupArchiveDataManager* NewL( RFs& aFsSession, RFile64& aFile, MMMCScBkupProgressObserver& aProgressManager );
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        /**
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        * C++ destructor
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        */
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        ~CMMCScBkupArchiveDataManager();
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    private:
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        /**
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        * C++ default constructor
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        */
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        CMMCScBkupArchiveDataManager( RFs& aFsSession, RFile64& aFile, MMMCScBkupProgressObserver& aProgressManager );
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        /**
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        *
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        */
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        void ConstructL();
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    public: // API
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        /**
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        * Leaves on error, returns offset
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        */
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        TInt CurrentOffsetL() const;
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        /**
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        * Returns error or offset
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        */
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        TInt CurrentOffset() const;
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    private: // For RMMCScBkupArchiveBuf only
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        /**
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        *
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        */
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        void SetCurrentVector(const TMMCScBkupArchiveVector& aInfo);
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    private: // From MMMCScBkupArchiveDataInterface
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        RFs& ADIFsSession() const;
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        RFile64& ADIRawArchiveFile() const;
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        //
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        const TMMCScBkupArchiveVector& ADICurrentArchiveVectorInfo() const;
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        const TMMCScBkupArchiveVector& ADIOverallArchiveVectorInfo() const;
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        //
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        RWriteStream& ADIWriteStreamUncompressedLC( TInt aPos );
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        RReadStream& ADIReadStreamUncompressedLC( TInt aPos );
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        //
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        const TMMCScBkupArchiveVector& ADIWriteL( const TDesC8& aData );
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        const TMMCScBkupArchiveVector& ADIReadL( TDes8& aSink, const TMMCScBkupArchiveVector& aInfo );
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        //
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        void ADIWriteFileL( const TDesC& aSourceFileName, TRequestStatus& aObserver );
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        void ADIReadFileL( const TDesC& aDestinationFileName, const TMMCScBkupArchiveVector& aInfo, TRequestStatus& aStatus );
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        //
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        void ADIWriteCompressedL( const TDesC8& aData, TRequestStatus& aObserver );
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        void ADIReadDecompressedL( TDes8& aSink, const TMMCScBkupArchiveVector& aInfo, TRequestStatus& aStatus ) ;
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        //
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        void ADIAsynchronousCancel();
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        void ADIResetResources(TMMCScBkupOperationType aType);
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#ifdef RD_FILE_MANAGER_BACKUP
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        void ADIActivateCrcCalculation(TBool aType) { iCrcCalcActivated = aType; }
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        TUint32 ADIArchiveCrc() { return iCrc; }
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#endif
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    private: // Internal enumerations
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        /**
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        *
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        */
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        enum TOperation
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            {
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            EOperationIdle = 0,
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            EOperationCompressing,
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            EOperationDecompressing
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            };
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    private: // Internal methods
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        /**
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        *
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        */
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        void EnsureCompressorExistsL(MEZBufferManager& aBufferManager);
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        /**
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        *
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        */
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        void EnsureDecompressorExistsL(MEZBufferManager& aBufferManager);
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        /**
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        *
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        */
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        void SetObserver(TRequestStatus& aStatus);
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        /**
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        *
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        */
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        void CompleteSelf(TInt aCompletionCode = KErrNone);
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        /**
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        *
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        */
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        void CompleteObserver(TInt aCompletionCode = KErrNone);
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        /**
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        *
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        */
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        void SetOperation(TOperation aOperation);
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#ifdef RD_FILE_MANAGER_BACKUP
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        /**
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        *
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        */
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        void CalculateCrc( const TAny* aPtr,TInt aLength );
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#endif
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    private: // From CActive
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        void RunL();
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        void DoCancel();
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        TInt RunError(TInt aError);
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    private: // Member data
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        // Owned externally:
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        // 
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        RFs& iFsSession;
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        //
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        RFile64& iFile;
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        //
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        MMMCScBkupProgressObserver& iProgressManager;
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        //
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        TRequestStatus* iObserverStatus;
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        // Owned by this object
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        //
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        TOperation iOperation;
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        //
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        CMMCScBkupBufferManagerBase* iBufferManager;
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        //
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        CEZCompressor* iCompressor;
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        //
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        CEZDecompressor* iDecompressor;
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        //
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        TMMCScBkupArchiveVector iCurrentVectorInfo;
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        //
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        TMMCScBkupArchiveVector iOverallArchiveVectorInfo;
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        //
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        RMMCScBkupArchiveWriteStream iWriteStream;
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        //
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        RMMCScBkupArchiveReadStream iReadStream;
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#ifdef RD_FILE_MANAGER_BACKUP
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        //
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        TBool iCrcCalcActivated;
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        //
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        TUint32 iCrc;
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#if defined(__MMCSCBKUPLOGGING_ENABLED__)
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        TUint32 iTotalTickCount;
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#endif
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#endif // RD_FILE_MANAGER_BACKUP
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        friend class RMMCScBkupArchiveBuf;
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    };
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#endif // __CMMCSCBKUPARCHIVEDATAMANAGER_H__
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//End of File