--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/filesystemuis/memscaneng/serverinc/mseng.h	Mon Jan 18 20:09:41 2010 +0200
@@ -0,0 +1,194 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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: 
+*     The actual "engine". 
+*
+*/
+
+
+#ifndef CMSENG_H
+#define CMSENG_H
+
+
+// SYSTEM INCLUDES
+#include <data_caging_path_literals.hrh>
+#include <badesca.h>                        // descriptor arrays
+#include <f32file.h>                        // enum TDriveNumber
+#include <stringresourcereader.h>
+#include <barsc2.h>                         // CResourceFile
+#include <barsread2.h>                      // RResourceReader
+
+
+// USER INCLUDES
+#include "msenguihandler.h"
+
+
+// FORWARD DECLARATIOS
+class CMsengScanner;
+class RFs;
+class MMsengUIHandler;
+
+
+// CONSTANTS
+
+// Resource file path
+_LIT(KMsengRscFilePath,"Z:mseng.rsc");
+
+
+// DATA TYPES
+
+/**
+*  Type definition to handle arrays of integers 
+*  more conveniently
+*/
+typedef CArrayFixFlat<TInt> CIntArray;
+
+
+// CLASS DECLARATION
+
+/**
+*  The actual "engine".
+*  This is the class which the UI instantiates.
+*/
+class CMseng :public CBase
+    {
+    public:  // Constructors and destructor
+        /**
+        * Two-phased constructor.
+        * @param aUIHandler Reference to a class implementing MMsengUIHandler interface
+        */
+        IMPORT_C static CMseng* NewL(MMsengUIHandler& aUIHandler);
+        /**
+        * Destructor.
+        */
+        IMPORT_C ~CMseng();
+
+    public: // New functions
+        
+        /**
+        * Get the data groups.
+        * @return CDesCArray* containing the names of the data groups.
+        */
+        IMPORT_C CDesCArray* DataGroupsL() const;
+
+        /**
+        * Get the scan result. This array contains exacly one
+        * integer per data group. 
+        * @return Array of integers. 
+        */
+        IMPORT_C CArrayFix<TInt64>* ScanResultL() const;
+
+        /**
+        * Is there scanning going on?
+        * @return ETrue if there is scanning going on, otherwise EFalse.
+        */
+        IMPORT_C TBool ScanInProgress() const;
+
+        /**
+        * Get the amount of total and free space on a disk
+        * @param aTotal Amount of total space in bytes in substituted here.
+        * @param aFree Amount of free space in bytes in substituted here.
+        * @param aVolume Disk identifier, e.g. 'C'
+        */
+        IMPORT_C void DiskInfoL(TInt64& aTotal, TInt64& aFree, const TDriveNumber aVolume) const;
+
+        /**
+        * Get the amount of total and free RAM.
+        * @param aTotal Amount of total RAM in bytes in substituted here.
+        * @param aTotal Amount of free RAM in bytes in substituted here.
+        */
+        IMPORT_C static void MemInfoL(TInt64& aTotal, TInt64& aFree);
+
+        /**
+        * Start scanning memory. 
+        * This means starting the actual work of the engine. Starts scanning,
+        * which runs until finished.
+        *
+        * The scanning is only supported for drives C and E, otherwise
+        * leave occurs with error KErrNotSupported.
+        *        
+        * NOTE: the support for scanning E drive is not properly tested.
+        *       It is assumed to have the same directory structure than in C.
+        *
+        * @param aDrive the drive to be scanned
+        */
+        IMPORT_C void ScanL(TDriveNumber aDrive);
+
+        /**
+        * Cancel ongoing scanning operation.
+        */
+        IMPORT_C void Cancel();
+        
+        /**
+        * Check whether internal drive.
+        * @param aDrv Drive to be chanked.
+        * @return ETrue if internal drive, otherwise EFalse.
+        */
+        static TBool IsInternalDrive( RFs& aFs, const TInt aDrv );
+
+        /**
+        * Check whether removable drive.
+        * @param aDrv Drive to be chanked.
+        * @return ETrue if internal drive, otherwise EFalse.
+        */
+        static TBool IsRemovableDrive( RFs& aFs, const TInt aDrv );
+
+    private:
+
+        /**
+        * C++ default constructor is prohibited.
+        */
+        CMseng(MMsengUIHandler& aUIHandler);
+
+        /**
+        * By default Symbian OS constructor is private.
+        *
+        * Initialize iResultArray by reading the the data group 
+        *  names from resource file and setting all result values to zero.
+        * Initialize iDataGroupUidArray and iDataGroupExtArray
+        *  from resource file.
+        */
+        void ConstructL();
+        
+
+        // Prohibit copy constructor if not deriving from CBase.
+        CMseng( const CMseng& );
+        // Prohibit assigment operator if not deriving from CBase.
+        CMseng& operator= ( const CMseng& );
+
+
+    private:    // Data members
+    
+        MMsengUIHandler& iUIHandler;
+        CMsengScanner* iScanner;
+
+        // Number of data groups
+        TInt iNumberOfDataGroups;
+
+        // These arrays are needed to when calculating the result.
+        // They are indexed using values from enum TDataGroups.
+        // This creates the mapping between data groups and the
+        // UIDs and extensions belonging to a particular data group
+        CArrayPtrFlat<CIntArray>* iDataGroupUidArray;
+        CArrayPtrFlat<CIntArray>* iDataGroupExtArray;        
+        
+        RFs iFsSession;
+        CResourceFile* iResFile;
+        mutable TInt64 iFreeMemory;        
+        
+    };
+
+#endif      // CMSENG_H   
+            
+// End of File