1 /*

     2 * Copyright (c) 2003 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  ?Description

    15 *

    16 */

    17 

    18 

    19 #ifndef __GZIPBUFMGR_H_

    20 #define __GZIPBUFMGR_H_

    21 

    22 //-----------------------------------------------------------------------------

    23 #include <e32base.h>

    24 #include <EZBufMan.h>

    25 #include <EZGZip.h>

    26 #include <s32mem.h>

    27 

    28 //-----------------------------------------------------------------------------

    29 class CGzipStream;

    30 class RMemReadStream;

    31 

    32 //-----------------------------------------------------------------------------

    33 class GZipBufMgr : public MEZBufferManager

    34     {

    35     public:

    36         // Constructor and Destructor

    37         static GZipBufMgr* NewL(TPtrC8 in);

    38         virtual ~GZipBufMgr();

    39 

    40         // Overridden virtual methods from MEZBufferManager

    41         void InitializeL(CEZZStream &aZStream);

    42         void NeedInputL(CEZZStream &aZStream);

    43         void NeedOutputL(CEZZStream &aZStream);

    44         void FinalizeL(CEZZStream &aZStream);

    45         

    46         // Public methods

    47         void ReadGZipHeaderL(TEZGZipHeader& aHeader);

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

    49         void SetGZipBuffer(TPtrC8 data);

    50 

    51     private:

    52         void ConstructL();

    53         GZipBufMgr(TPtrC8 in);

    54 

    55         /// Always points to start of the input Buffer

    56         TPtrC8	iInput;

    57 

    58         // Always points to start of the output Buffer

    59         TPtr8	iOutputDes;

    60         HBufC8*	iOutput;

    61         

    62         // Used by the virtual methods from MEZBufferManager

    63         TBool	iNeedInput;

    64         TBool	iNeedOutput;

    65         TBool	iFinalized;

    66 

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

    68         TUint   iOffset;

    69 

    70         // Magic GZip numbers

    71         TUint8  iID1;

    72         TUint8  iID2;

    73     };

    74 

    75 #endif // !__GZIPBUFMGR_H_