// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// which accompanies this distribution, and is available

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#if !defined (__MIUTATCH_H__)

#define __MIUTATCH_H__

#if !defined (__S32FILE_H__)

#include <s32file.h>

#endif

const TInt KDataLineBufferLength = 4096;

_LIT(KImcvAttachFormatStr, "%S(%d)%S");

/**

@internalTechnology

@released

*/

enum TImAttachmentFileState

	{ 

	EFileNotOpen, 

	EFileIsOpen, 

	EFileIsClosed,		

	EFileIsCorrupt,		// UU data being decoded is corrupt

	EFileIsIncomplete,	// file write failed

	EFileFailedToOpen,	// can't open attach file

	EFileTopIncomplete	// File is incomplete due to top

	};

class TImAttachmentFile		// utility class to handle file operations with Email attachments

/**

@internalAll

@released

*/

    {

public:

 	enum TImFileOpenMode

		{

		/**

		File opened for read mode

		*/

		EImFileRead = 0,

		/**

		File opened for write mode

		*/

		EImFileWrite,

		};   

public:

    IMPORT_C TImAttachmentFile(RFs& aFileSession);  // constructor

    IMPORT_C ~TImAttachmentFile();  // destructor

    IMPORT_C TInt MakeDir (const TDesC& aDirPath);

    IMPORT_C TInt OpenFile (const TDesC& aDirPath ,const TDesC& aFileName );

    IMPORT_C TInt CreateFile (const TDesC& aDirPath ,const TDesC& aFileName );

    IMPORT_C TInt ReadFile (TDes8& rBuffer, TInt aNumBytes );

    IMPORT_C TInt WriteFile (const TDesC8& aBuffer);

    IMPORT_C TInt WriteFile (const TDesC16& aBuffer);

    IMPORT_C TInt CloseFile();

	IMPORT_C TInt DeleteAttachment(const TDesC& aDirPath,const TDesC& aFileName);

	IMPORT_C void SetFileHandle(RFile& aFile,TImFileOpenMode aFileMode);

	TInt AppendValidFile(const TDesC& aDirPath, const TDesC& aFileName, TFileName& rFullFilePath);

private:

	void Reset();

	TInt WriteFile ();

    TInt ReadFile ();

	TInt FlushFile();

	TPtrC8 SelectFileData(TInt& abufLen, TInt& aDataLen);

private:

    RFs&		    iFileSession;

	RFile			iFile;

	TFileText		iFileText;

	TFileName		iFullFilePath;

	TBuf8<KDataLineBufferLength>		iDataLine;

	TBool			iWritingToFile;

	TInt			iSpaceOnCache;

	TInt			iPositionInCache;

    };

#endif