williamr@2: // Copyright (c) 1999-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@4: // under the terms of "Eclipse Public License v1.0"
williamr@2: // which accompanies this distribution, and is available
williamr@4: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: // Declaration for CEZStream class.  
williamr@2: // 
williamr@2: //
williamr@2: 
williamr@2: #ifndef __EZZSTREAM_H__
williamr@2: #define __EZZSTREAM_H__
williamr@2: 
williamr@2: #include <e32base.h>
williamr@4: #include <ezlib.h> 
williamr@2: #include <ezliberrorcodes.h>
williamr@2: 
williamr@2: /**
williamr@2: Represents a zip stream
williamr@2: 
williamr@2: @publishedAll
williamr@2: @released
williamr@2: */
williamr@2: class CEZZStream : public CBase
williamr@2: 	{
williamr@2: public:
williamr@2: /** stream panic values */
williamr@2: 	enum 
williamr@2: 		{
williamr@2: 		EStreamError = -Z_STREAM_ERROR,
williamr@2: 		EDataError = -Z_DATA_ERROR,
williamr@2: 		EBufError = -Z_BUF_ERROR,
williamr@2: 		EVersionError = -Z_VERSION_ERROR,
williamr@2: 		EUnexpected
williamr@2: 		};
williamr@2: public:
williamr@2: 	IMPORT_C void SetInput(const TDesC8& aInputData);
williamr@2: 	IMPORT_C void SetOutput(TDes8& aOutputData);
williamr@2: 
williamr@2: 	IMPORT_C TPtrC8 OutputDescriptor() const;
williamr@2: 	IMPORT_C TInt TotalOut() const;
williamr@2: 	IMPORT_C TInt TotalIn() const;
williamr@2: 	IMPORT_C TInt32 Adler32() const;
williamr@2: 	IMPORT_C TInt AvailIn() const;
williamr@2: 	IMPORT_C TInt AvailOut() const;
williamr@2: 
williamr@2: 	IMPORT_C TInt Progress(TInt aTotalLength) const;
williamr@2: 	
williamr@2: protected:
williamr@2: 	CEZZStream();
williamr@2: 
williamr@2: 	
williamr@2: protected:
williamr@2: 	z_stream iStream;
williamr@2: 
williamr@2: 	// This pointer is reset every time SetOutput is called.  It maintains a pointer to the
williamr@2: 	// start of the output buffer which is being written to.  We cannot use iStream.next_out,
williamr@2: 	// because zlib will modifify this during its deflate and inflate.
williamr@2: 	
williamr@2: 	TUint8* iOutputPointer;
williamr@2: 	TInt iOutputBufferLength;
williamr@2: 	};
williamr@2: 
williamr@2: #endif