1 // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

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

    15 //

    16 

    17 

    18 

    19 /**

    20  @file

    21  @internalComponent

    22  @released

    23 */

    24 #ifndef XMLENGCGZIPFILEDESERIALIZER_H

    25 #define XMLENGCGZIPFILEDESERIALIZER_H

    26 

    27 #include <xml/dom/xmlengoutputstream.h>

    28 #include <ezbufman.h>

    29 #include <xml/parser.h>

    30 #include <f32file.h>

    31 

    32 #include <ezgzip.h>

    33 class CEZDecompressor;

    34 

    35 class CXmlEngGZipFileDeserializer : public CBase, public MEZBufferManager

    36 	{

    37 	public:

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

    39 

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

    41 

    42 	    ~CXmlEngGZipFileDeserializer();

    43 	    

    44 	    TBool InflateL();

    45 	    

    46         /**

    47          * Implementation of MEZBufferManager interface.

    48          */

    49 	    void InitializeL(CEZZStream& aZStream);

    50 	    void NeedInputL(CEZZStream& aZStream);

    51 	    void NeedOutputL(CEZZStream& aZStream);

    52 	    void FinalizeL(CEZZStream& aZStream);

    53 

    54 

    55     protected:

    56 	    CXmlEngGZipFileDeserializer( Xml::CParser* aParser );

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

    58 			

    59 	private:

    60 	    

    61 	    /** XML Framework Parser Interface **/

    62 	    Xml::CParser* iParser;

    63 

    64         RFile iInputFile;

    65 

    66         CEZDecompressor *iDecompressor;

    67 

    68 	    TInt32 iCrc;

    69         TEZGZipHeader iHeader;

    70         TEZGZipTrailer iTrailer;

    71 

    72 	    /** Buffers **/

    73 	    TUint8* iInputBuffer;

    74 	    TUint8* iOutputBuffer;

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

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

    77 	

    78 	    	    

    79 	}; 

    80 	

    81 

    82 #endif /* XMLENGCGZIPFILEDESERIALIZER_H */