// Copyright (c) 2006-2009 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:

// Interface class describing class that may be used as output stream for dom tree

//

/**

 @file

 @internalComponent

 @released

*/

#ifndef XMLENGCGZIPFILEDESERIALIZER_H

#define XMLENGCGZIPFILEDESERIALIZER_H

#include <xml/dom/xmlengoutputstream.h>

#include <ezbufman.h>

#include <xml/parser.h>

#include <f32file.h>

#include <ezgzip.h>

class CEZDecompressor;

class CXmlEngGZipFileDeserializer : public CBase, public MEZBufferManager

	{

	public:

        static CXmlEngGZipFileDeserializer* NewLC( Xml::CParser* aParser, RFs& aRfs, const TDesC& aGzFileName, TInt aOutBufSize = 0x8000 );

        static CXmlEngGZipFileDeserializer* NewL( Xml::CParser* aParser, RFs& aRfs, const TDesC& aGzFileName, TInt aOutBufSize = 0x8000 );

	    ~CXmlEngGZipFileDeserializer();

	    TBool InflateL();

        /**

         * Implementation of MEZBufferManager interface.

         */

	    void InitializeL(CEZZStream& aZStream);

	    void NeedInputL(CEZZStream& aZStream);

	    void NeedOutputL(CEZZStream& aZStream);

	    void FinalizeL(CEZZStream& aZStream);

    protected:

	    CXmlEngGZipFileDeserializer( Xml::CParser* aParser );

	    void ConstructL( RFs& aRfs, const TDesC& aGzFileName, TInt aBufSize );

	private:

	    /** XML Framework Parser Interface **/

	    Xml::CParser* iParser;

        RFile iInputFile;

        CEZDecompressor *iDecompressor;

	    TInt32 iCrc;

        TEZGZipHeader iHeader;

        TEZGZipTrailer iTrailer;

	    /** Buffers **/

	    TUint8* iInputBuffer;

	    TUint8* iOutputBuffer;

	    TPtr8 iInputDescriptor;  // always points to start of the input Buffer

	    TPtr8 iOutputDescriptor; // always points to start of the output Buffer

	}; 

#endif /* XMLENGCGZIPFILEDESERIALIZER_H */