/*

* Copyright (c) 1997-1999 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#if !defined(__RESCOMP_H__)

#define __RESCOMP_H__

#include <e32base.h>

#include <f32file.h>

#include <s32file.h>

class CDictArray;

class CResEntry;

class TBitWriter

	{

public:

	TBitWriter(RWriteStream& aStream);

	void WriteL(TInt aValue, TInt aBits);

	void FlushL();

private:

	RWriteStream& iStream;

	TInt iValue;

	TInt iBitsWritten;

	};

class CResComp : public CBase

	{

public:

	CResComp(CConsoleBase* aConsole);

	~CResComp();

	void LoadFileL(RFs& aFs, const TDesC& aFileName);

	void CompressL();

	void WriteFileL(RFs& aFs, const TDesC& aName);

	TPtrC8 Resource(TInt aRes);

	TInt FindInResources(TDesC8& aBuf, TInt aMax);

	TInt OriginalFileSize();

	TInt CompressedSize();

	void DisplayStats();

	TInt ResourceSize();

	TBool IsValid();

private:

	void LoadBAFLCompressedFileL(RFs& aFs, const TDesC& aName);

	void LoadUnCompressedFileL(RFs& aFs, const TDesC& aName);

	TBool FileIsBAFLCompressedL(RFs& aFs, const TDesC& aName);

	void OptimizeDictL();

	void FindEmbeddedDict(TDesC8& aMatch, TInt aStart);

	void WriteHeaderL(RWriteStream& aStream);

	void WriteDictionaryL(RWriteStream& aStream);

	void WriteDictionaryHeaderL(RWriteStream& aStream);

	void WriteDictionaryIndexL(RWriteStream& aStream);

	void WriteDictionaryDataL(RWriteStream& aStream);

	void WriteResourceL(RWriteStream& aStream);

	void WriteResourceIndexL(RWriteStream& aStream);

	void WriteResourceDataL(RWriteStream& aStream);

	TInt CompressResourcesL(TInt aMaxDictEntries);

	TInt AttemptCompressionL(TInt aMaxDictEntries);

	void CheckForLongDataStringsL();

private:

	CConsoleBase* iConsole;

	TUint8* iResData;

	CDictArray* iDict;

	TUint16* iResIndex;

	CArrayPtrFlat<CResEntry>* iResArray;

	TInt iResources;

	TInt iFileLength;

	TInt iCompressedSize;

	TInt iLargestResourceSize;

	TInt iMaxEntries;

	TInt iBitsForDict;

	TInt iBestCompression;

	TInt iBestSize;

	TInt iOriginalCompressedSize;

public:

	TBuf<80> iConOutput;

	};

#endif