// Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

 // which accompanies this distribution, and is available

 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 // EZLib: ZSTREAM.H

 // Declaration for CEZStream class.  

 // 

 //

 #ifndef __EZZSTREAM_H__

 #define __EZZSTREAM_H__

 #include <e32base.h>

 #include <ezlib.h>

 #include <ezliberrorcodes.h>

 /**

 Represents a zip stream

 @publishedAll

 @released

 */

 class CEZZStream : public CBase

 	{

 public:

 /** stream panic values */

 	enum 

 		{

 		EStreamError = -Z_STREAM_ERROR,

 		EDataError = -Z_DATA_ERROR,

 		EBufError = -Z_BUF_ERROR,

 		EVersionError = -Z_VERSION_ERROR,

 		EUnexpected

 		};

 public:

 	IMPORT_C void SetInput(const TDesC8& aInputData);

 	IMPORT_C void SetOutput(TDes8& aOutputData);

 	IMPORT_C TPtrC8 OutputDescriptor() const;

 	IMPORT_C TInt TotalOut() const;

 	IMPORT_C TInt TotalIn() const;

 	IMPORT_C TInt32 Adler32() const;

 	IMPORT_C TInt AvailIn() const;

 	IMPORT_C TInt AvailOut() const;

 	IMPORT_C TInt Progress(TInt aTotalLength) const;

 protected:

 	CEZZStream();

 protected:

 	z_stream iStream;

 	// This pointer is reset every time SetOutput is called.  It maintains a pointer to the

 	// start of the output buffer which is being written to.  We cannot use iStream.next_out,

 	// because zlib will modifify this during its deflate and inflate.

 	TUint8* iOutputPointer;

 	TInt iOutputBufferLength;

 	};

 #endif