--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/imgtools/imglib/filesystem/include/cluster.h	Tue Oct 27 16:36:35 2009 +0000
@@ -0,0 +1,72 @@
+/*
+* 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: 
+* Cluster class for FileSystem component
+* @internalComponent
+* @released
+*
+*/
+
+
+#ifndef CLUSTER_H
+#define CLUSTER_H
+
+#include "errorhandler.h"
+#include "directory.h"
+
+typedef std::multimap <unsigned int,unsigned int> TClustersPerEntryMap;
+
+/*
+ * This class is used by classes CDirRegion and CLongName. This class describes 
+ * the basic Data members and Member functions related to cluster number 
+ * allocation and FAT input map creation.
+ *
+ * @internalComponent
+ * @released
+ */
+
+class CCluster
+{
+	public:
+		static CCluster* Instance (unsigned int aClusterSize, 
+								   unsigned int aTotalNumberOfClusters);
+
+		unsigned int GetCurrentClusterNumber() const;
+		void DecrementCurrentClusterNumber();
+		unsigned short int GetHighWordClusterNumber() const;
+		unsigned short int GetLowWordClusterNumber() const;
+		void CreateMap(unsigned int aStartingClusterNumber,unsigned int aPairClusterNumber);
+		TClustersPerEntryMap* GetClustersPerEntryMap();
+		void UpdateNextAvailableClusterNumber();
+		unsigned int GetClusterSize() const;
+		~CCluster ();
+
+	private:
+		CCluster(unsigned int aClusterSize,
+				 unsigned int aTotalNumberOfClusters);
+		static CCluster* iClusterInstance;
+
+		unsigned long int iClusterSize;
+		unsigned int iRootClusterNumber;
+		unsigned int iCurrentClusterNumber;
+		unsigned int iTotalNumberOfClusters;
+
+		
+		/* used to store the mapping of Starting cluster and Number's of
+		 * clusters occupied by the specific entry
+		 */
+		TClustersPerEntryMap iClustersPerEntry;
+};
+
+#endif //CLUSTER_H