/*

* 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: 

* Long name class for FileSystem component

* @internalComponent

* @released

*

*/

#ifndef LONGNAME_H

#define LONGNAME_H

#include "cluster.h"

#include "longentry.h"

#define ToString(dataInteger) reinterpret_cast<char*>(&dataInteger),sizeof(dataInteger)

typedef stack<CLongEntry*> LongEntryStack;

typedef list<string> StringList;

//Long entry sub name lengths

enum TLongSubNameLength

{

	ESubName1Length = 5,

	ESubName2Length = 6,

	ESubName3Length = 2

};

//Name length constants

enum TNameLength

{

	EExtensionLength = 0x03,

	EShortNameInitialLength = 0x06,

	ETildeNumberPosition = 0x07,

	ENameLength = 0x8,

	ENameLengthWithExtension = 0x0B

};

//Holds all the short directory entry.

static StringList GShortEntryList;

/**

This class is used to prepare Long Name Directory entry portion of Directory Entry region

@internalComponent

@released

*/

class ClongName

{

private:

	StringList iSubNamesList;		//Holds the splitted file names 

	LongEntryStack iLongEntryStack;	//Holds all the long name directory entry node's

	unsigned int iClusterNumber;	//Current cluster number, where the current long entry needs to be written

	CCluster* iClusterPtr;

	string iLongName;

	char iLongEntryAttribute;

	string iShortName;

	unsigned int iLongNameLength;

	unsigned int iTildeNumberPosition;

	/**If the received sub name entry size is equal to its expected length, then

	two NULL character should be preceded at the start of next sub name 

	*/

	bool iSubNameProperEnd; //Is name ends without NULL character termination?

	bool iFirstNullName;// Is first name ending with NULL character?

private:

	string GetShortEntryName();

	unsigned char CalculateCheckSum();

	void WriteLongEntry(CLongEntry* aLongEntry,string& longEntryString);

	void WriteSubName(string& aSubName,unsigned short aSubNameLength,

					  string& alongEntryString);

	void FormatLongFileName(string& aLongName);

	void CheckAndUpdateShortName(string& aShortName);

	void PushAndErase(string& aFirstName,string& aSecondName,string& aThirdName);

	void GetSubName(string& aLongName,

				   int& aStartIndex,

				   int& aStringLength,

				   int aSubNameLength,

				   string& aSubName);

	void PopAndErase();

	void CalculateExtentionLength();

public:

	ClongName(CCluster* aClusterPtr, CDirectory* aEntry);

	~ClongName();

	CDirectory* CreateShortEntry(CDirectory* aEntry);

	string CreateLongEntries();

	static void DestroyShortEntryList();

};

#endif //LONGNAME_H