filesystemuis/memscaneng/serversrc/msengscanner.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 25 May 2010 12:28:34 +0300
branchRCL_3
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permissions -rw-r--r--
Revision: 201019 Kit: 2010121
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/*
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* Copyright (c) 2006 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 "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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*     This is the class that is in control most of the time.
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*     It instantiates CMsengScannerBase derived scanner classes
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*     to do the job.
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*
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*/
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// SYSTEM INCLUDES
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#include <bautils.h>
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#include <mseng.rsg>
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// USER INCLUDES
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#include "msengscanner.h"
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#include "msengfileextscanner.h"
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#include "msengfindallscanner.h"
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#include "msengregistryscanner.h"
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#include "msenguihandler.h"
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#include "mseng.h"
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// LOCAL CONSTANTS AND MACROS
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#ifdef _DEBUG
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_LIT(KClassName, "CMsengScanner");
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#endif
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// ================= MEMBER FUNCTIONS ========================================
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// ---------------------------------------------------------------------------
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// CMsengScanner::CMsengScanner()
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//
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// C++ default constructor. Can NOT contain any code, that might leave.
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// ---------------------------------------------------------------------------
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CMsengScanner::CMsengScanner(MMsengUIHandler& aUIHandler, CResourceFile& aResFile) :
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iUIHandler(aUIHandler), iResFile(aResFile)
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    {
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    }
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// ---------------------------------------------------------------------------
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// CMsengScanner::~CMsengScanner()
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//
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// Destructor
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// ---------------------------------------------------------------------------
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CMsengScanner::~CMsengScanner()
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    {
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    delete iScanArray;
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    delete iFileExtScanner;
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    delete iFindAllScanner;
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    delete iRegistryScanner;
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    }
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// ---------------------------------------------------------------------------
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// CMsengScanner::Cancel()
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// 
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// ---------------------------------------------------------------------------
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//
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void CMsengScanner::Cancel()
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    {
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    iFileExtScanner->Cancel();
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    iFindAllScanner->Cancel();
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    iRegistryScanner->Cancel();
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    TRAP_IGNORE( iUIHandler.QuitL(KErrCancel) );
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    }
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// ---------------------------------------------------------------------------
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// CMsengScanner::HaveActiveScanners()
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// 
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// ---------------------------------------------------------------------------
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//
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TBool CMsengScanner::HaveActiveScanners() const
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    {
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    const TBool isActive = 
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            (iFileExtScanner && iFileExtScanner->IsActive())
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            || (iFindAllScanner && iFindAllScanner->IsActive())
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            || (iRegistryScanner && iRegistryScanner->IsActive())
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		 ;
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	return isActive;
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	}
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// ---------------------------------------------------------------------------
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// CMsengScanner::ScanL()
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// 
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// ---------------------------------------------------------------------------
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//
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TInt CMsengScanner::ScanL(TDriveNumber aDrive, TInt aNumberOfDataGroups, RFs& aFsSession)
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    {
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    if(HaveActiveScanners())
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        {
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        return KErrInUse;
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        }
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    // Create data structures; delete the old ones
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    CMsengInfoArray* infoArray = CMsengInfoArray::NewL( aDrive,
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                                                        aNumberOfDataGroups,
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                                                        aFsSession, iResFile );
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    delete iScanArray;
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	iScanArray = infoArray;
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    // Do some scanning tasks not include in ScanL
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    PreScanL(aDrive, aFsSession);
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   117
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    // Start the scan by filename extension
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    iFileExtScanner = CMsengFileExtScanner::NewL(*this, *iScanArray, aFsSession);
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    iFileExtScanner->ScanL(iScanArray->Dirs());
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   121
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    // Start scanning data dirs (including messages)
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    iFindAllScanner = CMsengFindAllScanner::NewL(*this, *iScanArray, aFsSession);
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    iFindAllScanner->ScanL(iScanArray->DataDirs());
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   125
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    // Start the scan from registries
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    iRegistryScanner = CMsengRegistryScanner::NewL( aDrive, *this, *iScanArray, aFsSession );
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    iRegistryScanner->Scan();
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   129
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    return KErrNone;
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    }
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   132
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// ---------------------------------------------------------------------------
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// MsengScanner::HandleScannerEventL()
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// 
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// Handle the events from scanning
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// ---------------------------------------------------------------------------
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//
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void CMsengScanner::HandleScannerEventL(TScannerEvent aEvent,
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                                        const CMsengScannerBase& /*aScanner*/,
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                                        TInt aError)
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    {
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   143
#ifdef __SHOW_RDEBUG_PRINT_
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    RDebug::Print(_L("CMsengScanner::HandleScannerEventL() called with event: %d"), aEvent);
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   145
#endif // __SHOW_RDEBUG_PRINT_
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   146
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    switch(aEvent)
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        {
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        case MMsengScannerObserver::EScannerEventScanComplete:
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            // This scanner object has finished all of its scanning.
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            // If all the others are finished too,
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            // then we tell the UI that scanning is complete.
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            if (!HaveActiveScanners())
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                {
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                iUIHandler.QuitL(KErrNone);
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                }
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            break;
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   158
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   159
        case MMsengScannerObserver::EScannerEventScanError:
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            // An error has happened
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   161
            iUIHandler.ErrorL(aError);
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            break;
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   163
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        default:
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            // should never happen
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            __ASSERT_DEBUG(EFalse,User::Panic(KClassName, KErrGeneral));
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   167
            break;
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   168
        }
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    }
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   170
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// ---------------------------------------------------------------------------
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// CMsengScanner::PreScanL()
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// 
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// ---------------------------------------------------------------------------
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//
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   176
void CMsengScanner::PreScanL(TDriveNumber aDrive, RFs& aFsSession)
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    {
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    // Before actual scanning, check the sizes of the few extra
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   179
    // data files that are not scanned in normal way.
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   180
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   181
    RResourceReader theReader;  
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   182
    
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   183
    TBool somethingToDo = EFalse;
20
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   184
    if( CMseng::IsInternalDrive( aFsSession, aDrive )
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   185
        && !CMseng::IsMassStorageDrive( aFsSession, aDrive ) )
0
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   186
        {
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   187
        theReader.OpenLC( &iResFile, C_EXTRADATAFILES );
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   188
        somethingToDo = ETrue;
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   189
        }
20
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   190
    else
0
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   191
        {
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   192
        theReader.OpenLC( &iResFile, E_EXTRADATAFILES );
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   193
        somethingToDo = ETrue;
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   194
        }
20
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   195
    
0
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   196
    if(somethingToDo)
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   197
        {
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        //the first WORD contains the number of elements in the resource
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   199
        const TInt length = theReader.ReadInt16L();
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   200
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   201
        // Read the array resource, 
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   202
        TInt groupindex; // value from enum TDataGroups
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   203
        for(TInt i=0; i<length; i++)
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   204
            {
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   205
            groupindex = theReader.ReadInt8L();
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   206
            HBufC* name = theReader.ReadHBufCL();
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   207
            TChar ch;
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   208
            if ( RFs::DriveToChar( aDrive, ch ) == KErrNone )
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   209
                {
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   210
                CleanupStack::PushL(name);
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   211
                TPtr ptrName = name->Des();
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   212
                TBuf<1> drive;
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   213
                drive.Append(ch);
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   214
                ptrName.Replace(0, drive.Length(), drive);
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   215
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   216
                // check the size of the file whose path was in the resource.
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   217
                TEntry file;
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   218
                TInt err = aFsSession.Entry(ptrName, file);
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   219
                if (err == KErrNone)
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   220
                    {
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   221
                    TInt size = file.iSize;
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   222
                    iScanArray->AddSizeByGroupL(groupindex, size);
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   223
                    }
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   224
                    
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   225
                CleanupStack::PopAndDestroy(name);
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   226
                }
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   227
            }
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   228
        }
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   229
    CleanupStack::PopAndDestroy(&theReader);
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   230
    }
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6a9f87576119 Revision: 201001
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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//  End of File