// Copyright (c) 1997-2009 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(__INBUF_H__)

#define __INBUF_H__

#if !defined(__F32FILE_H__)

#include <f32file.h>

#endif

#if !defined(__S32STOR_H__)

#include <s32stor.h>

#endif

const TInt KErrEndOfInput = -1000;

class CImportBufferBase : public CBase

/**

The purpose of this class is to provide a method of

abstracting the source of an input through a buffer

The class is intended to be used for a single input then destroyed

@publishedPartner

@deprecated>

*/

	{

public:

	IMPORT_C CImportBufferBase(TInt aMaxSize);

	IMPORT_C ~CImportBufferBase();

	IMPORT_C void ConstructL();

	IMPORT_C TInt ReadL(TText8& aByte);

	// !! Descriptor versions of ReadL useful?

	IMPORT_C virtual TInt SeekL(TSeek aSeekMode, TInt anOffset);

	IMPORT_C void ResetImportBuffer();

	IMPORT_C void ResetReadPtr();

protected:

	virtual TInt FillImportBuf()=0;

	IMPORT_C TInt MaxSize();

	IMPORT_C void SetLength(TInt aLength);

protected:

	TInt iImportBufferLength; 

	HBufC8* iImportBuffer;

private:

	TText8* iReadPtr;

	TText8* iEndBuf;

	TText8* iTBase;

	TInt iMaxSize;

	};

class CFileImportBuffer : public CImportBufferBase

/**

Buffered import from a file

@publishedPartner

@deprecated

*/

	{

	// Buffered import from a file

public:

	IMPORT_C CFileImportBuffer(RFile aSource, TInt aMaxSize);

	IMPORT_C TInt SeekL(TSeek aSeekMode, TInt anOffset);

protected:

	IMPORT_C TInt FillImportBuf();

private:

	RFile iSource;

	};

#endif // __INBUF_H__