1 /*

     2 * Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of the License "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description: 

    15 * CDIRREGION.H

    16 * Directory Region Operations for FileSystem component

    17 * @internalComponent

    18 * @released

    19 *

    20 */

    21 

    22 

    23 #ifndef DIRREGION_H

    24 #define DIRREGION_H

    25 

    26 #include "filesystemclass.h"

    27 #include "longname.h"

    28 

    29 #include <fstream>

    30 #include <map>

    31 #include <string>

    32 

    33 class CFileSystem;

    34 

    35 typedef std::ofstream OfStream;

    36 typedef std::ifstream IfStream;

    37 typedef std::ios Ios;

    38 typedef std::map<unsigned int,std::string> StringMap;

    39 

    40 /**

    41 This class describes the member functions and data members required to create directory/data

    42 region of FAT image.

    43 

    44 @internalComponent

    45 @released

    46 */

    47 

    48 class CDirRegion

    49 	{

    50 	private:

    51 		void FormatName(String& aString,char aAttrValue);

    52 		unsigned int Get32BitClusterNumber(unsigned int aHighWord, unsigned int aLowWord);

    53 		void CheckEntry(EntryList aNodeList);

    54 		void CreateDirEntry(CDirectory* aEntry,unsigned int aParentDirClusterNumber);

    55 		void CreateAndWriteCurrentDirEntry(unsigned int aCurClusterNumber,String& aString);

    56 		void CreateAndWriteParentDirEntry(unsigned int aParDirClusterNumber,String& aString);

    57 		void WriteEntryToString(CDirectory* aEntry,String& aString);

    58 		bool IsLongEntry(CDirectory* aEntry) const;

    59 		void CreateLongEntries(CDirectory* aEntry,String& aDirString);

    60 		void WriteFileDataInToCluster(CDirectory* aEntry); 

    61 		void PushStringIntoClusterMap(unsigned int aNumber, 

    62 									  String& aDirString,

    63 									  unsigned long int aClusterSize,

    64 									  char aAttribute);

    65 		void PushDirectoryEntryString(unsigned int aNumber,String& aString,int aClustersRequired);

    66 

    67 	public:

    68 		CDirRegion(	EntryList iNodeList,

    69 					CFileSystem *aFileSystemPtr);

    70 		~CDirRegion();

    71 		void Execute();

    72 		void WriteClustersIntoFile(OfStream& aOutPutStream);

    73 		TClustersPerEntryMap* GetClustersPerEntryMap() const;

    74 

    75 	private:

    76 		IfStream iInputStream; //Input stream, used to read file contents

    77 		CCluster* iClusterPtr; //pointer to class CCluster

    78 		bool iCurrentDirEntry; //Is current entry(.) is created?

    79 		bool iParentDirEntry;//Is parent entry (..) is created?

    80 		bool iFirstCluster; //Is this the first cluster for the current FAT image?

    81 

    82 		unsigned int iCurEntryClusterNumber; //Holds current entries cluster number

    83 		unsigned int iClusterKey; //Number used to map cluster with cluster contents

    84 		/* To avoid calling CCluster::GetClusterSize() function multiple times, this 

    85 		 *variable introduced.

    86 		 */

    87 		unsigned long int iClusterSize;

    88 		

    89 		StringMap iClusterMap; //The map between cluster number and cluster

    90 		unsigned int iRootDirSizeInBytes;//Reserved sectors for root directory entry

    91 		EntryList iNodeList;//To hold root directory entry

    92 	};

    93 

    94 #endif //DIRREGION_H