/*

* Copyright (c) 2006-2009 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 "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: 

* Base file system class for FileSystem component

* @internalComponent

* @released

*

*/

#ifndef FIlESYSTEMCLASS_H

#define FIlESYSTEMCLASS_H

#include "cluster.h"

#include "fat16bootsector.h"

#include "fat32bootsector.h"

#include "filesysteminterface.h"

#include<map>

#include <fstream>

//default root cluster number 

const int KDefaultRootCluster=2;

const int KDefaultSectorSizeinBytes=512;

const int KDefaultRootDirEntrySize=32;

typedef	TClustersPerEntryMap::iterator Iterator;

/**

Class representing base class  of all FAT type 

@internalComponent

@released

*/

class CFileSystem

{

protected:

	//Pointer to dynamically allocated array for containing the boot sector values of a FAT volume

	unsigned char* iData;

	//cluster size in bytes

	unsigned long int iClusterSize;

	//number of sectors occupied by a root directory

	unsigned long iRootDirSectors;	

	//total number of clusters in data segment

	unsigned long int iTotalClusters;

	unsigned int iBytesPerSector;

public:

	//constructor

	CFileSystem();

	// virtual destructor

	virtual ~CFileSystem();

	virtual void CreateBootSector(Long64 aPartitionSize,ConfigurableFatAttributes* aConfigurableFatAttributes)=0 ;

	virtual void WriteBootSector(ofstream& aOutPutStream)=0 ;

	virtual void CreateFatTable(ofstream& aOutPutStream)=0;

	virtual void ComputeClusterSizeInBytes()=0;

	virtual void ComputeRootDirSectors()=0;

	virtual void ComputeTotalClusters(Long64 aPartitionSize)=0;

	virtual void Execute(Long64 aPartitionSize,EntryList aNodeList,ofstream& aOutPutStream,

						ConfigurableFatAttributes* aConfigurableFatAttributes)=0;

	unsigned long int  GetTotalCluster() const;

	unsigned long GetRootDirSectors() const;

	unsigned long int GetClusterSize() const;

	unsigned int GetBytesPerSector() const;

};

#endif //FIlESYSTEMCLASS_H