1 // Copyright (c) 2003-2009 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 // @internalComponent

    15 // @prototype

    16 //

    17 

    18 #ifndef GZIPBUFMGR_H

    19 #define GZIPBUFMGR_H

    20 

    21 //-----------------------------------------------------------------------------

    22 #include <e32base.h>

    23 #include <ezbufman.h>

    24 #include <ezgzip.h>

    25 #include <s32mem.h>

    26 

    27 //-----------------------------------------------------------------------------

    28 class CGzipStream;

    29 class RMemReadStream;

    30 

    31 //-----------------------------------------------------------------------------

    32 class GZipBufMgr : public MEZBufferManager

    33     {

    34     public:

    35         // Constructor and Destructor

    36         static GZipBufMgr* NewL(TPtrC8 in);

    37         virtual ~GZipBufMgr();

    38 

    39         // Overridden virtual methods from MEZBufferManager

    40         void InitializeL(CEZZStream &aZStream);

    41         void NeedInputL(CEZZStream &aZStream);

    42         void NeedOutputL(CEZZStream &aZStream);

    43         void FinalizeL(CEZZStream &aZStream);

    44         

    45         // Public methods

    46         void ReadGZipHeaderL(TEZGZipHeader& aHeader);

    47         void ReadStringIntoDescriptorL(RMemReadStream& aMem, HBufC8 **aDes) const;

    48         void SetGZipBuffer(TPtrC8 data);

    49 

    50     private:

    51         void ConstructL();

    52         GZipBufMgr(TPtrC8 in);

    53 

    54         // Always points to start of the input Buffer

    55         TPtrC8	iInput;

    56 

    57         // Always points to start of the output Buffer

    58         TPtr8	iOutputDes;

    59         HBufC8*	iOutput;

    60         

    61         // Used by the virtual methods from MEZBufferManager

    62         TBool	iNeedInput;

    63         TBool	iNeedOutput;

    64         TBool	iFinalized;

    65 

    66         // Marks the start of the data, after the header

    67         TUint   iOffset;

    68 

    69         // Magic GZip numbers

    70         TUint8  iID1;

    71         TUint8  iID2;

    72     };

    73 

    74 #endif // GZIPBUFMGR_H