imgtools/imglib/filesystem/include/dirregion.h
author Richard Taylor <richard.i.taylor@nokia.com>
Wed, 17 Mar 2010 16:27:34 +0000
changeset 366 7006bcce5299
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child 590 360bd6b35136
permissions -rw-r--r--
version 2.12.5 (candidate 1)
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/*
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* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: 
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* CDIRREGION.H
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* Directory Region Operations for FileSystem component
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* @internalComponent
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* @released
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*
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*/
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#ifndef DIRREGION_H
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#define DIRREGION_H
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#include "filesystemclass.h"
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#include "longname.h"
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#include <fstream>
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#include <map>
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#include <string>
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class CFileSystem;
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typedef std::ofstream OfStream;
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typedef std::ifstream IfStream;
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typedef std::ios Ios;
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typedef std::map<unsigned int,std::string> StringMap;
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/**
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This class describes the member functions and data members required to create directory/data
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region of FAT image.
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@internalComponent
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@released
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*/
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class CDirRegion
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	{
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	private:
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		void FormatName(String& aString,char aAttrValue);
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		unsigned int Get32BitClusterNumber(unsigned int aHighWord, unsigned int aLowWord);
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		void CheckEntry(EntryList aNodeList);
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		void CreateDirEntry(CDirectory* aEntry,unsigned int aParentDirClusterNumber);
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		void CreateAndWriteCurrentDirEntry(unsigned int aCurClusterNumber,String& aString);
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		void CreateAndWriteParentDirEntry(unsigned int aParDirClusterNumber,String& aString);
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		void WriteEntryToString(CDirectory* aEntry,String& aString);
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		bool IsLongEntry(CDirectory* aEntry) const;
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		void CreateLongEntries(CDirectory* aEntry,String& aDirString);
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		void WriteFileDataInToCluster(CDirectory* aEntry); 
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		void PushStringIntoClusterMap(unsigned int aNumber, 
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									  String& aDirString,
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									  unsigned long int aClusterSize,
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									  char aAttribute);
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		void PushDirectoryEntryString(unsigned int aNumber,String& aString,int aClustersRequired);
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	public:
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		CDirRegion(	EntryList iNodeList,
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					CFileSystem *aFileSystemPtr);
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		~CDirRegion();
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		void Execute();
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		void WriteClustersIntoFile(OfStream& aOutPutStream);
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		TClustersPerEntryMap* GetClustersPerEntryMap() const;
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	private:
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		IfStream iInputStream; //Input stream, used to read file contents
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		CCluster* iClusterPtr; //pointer to class CCluster
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		bool iCurrentDirEntry; //Is current entry(.) is created?
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		bool iParentDirEntry;//Is parent entry (..) is created?
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		bool iFirstCluster; //Is this the first cluster for the current FAT image?
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		unsigned int iCurEntryClusterNumber; //Holds current entries cluster number
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		unsigned int iClusterKey; //Number used to map cluster with cluster contents
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		/* To avoid calling CCluster::GetClusterSize() function multiple times, this 
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		 *variable introduced.
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		 */
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		unsigned long int iClusterSize;
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		StringMap iClusterMap; //The map between cluster number and cluster
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		unsigned int iRootDirSizeInBytes;//Reserved sectors for root directory entry
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		EntryList iNodeList;//To hold root directory entry
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	};
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#endif //DIRREGION_H