uiutils/Localizer/src/CDirectoryLocalizer.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Wed, 31 Mar 2010 21:59:52 +0300
branchRCL_3
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/*
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* Copyright (c) 2002 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:  Source file
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*
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*/
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//  INCLUDE FILES
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#include <barsread.h>
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#include <bautils.h>
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#include <coemain.h>
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#include <directorylocalizer.rsg>
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#ifdef RD_MULTIPLE_DRIVE
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 #include <pathinfo.h>
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#endif // RD_MULTIPLE_DRIVE
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#include "CDirectoryLocalizer.h"
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//  LOCAL CONSTANTS AND MACROS
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// A resource file that contains the default directories and their localized names
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// Note for code inspector: make sure the path is correct
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_LIT( KDLDefaultResourceFile, "z:\\resource\\directorylocalizer.rsc" );
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// Total number of default localized directories is 13.
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// 8 * 2 = 16, leaves some room for app specific additions without reallocation
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const TInt KDLEntryGranularity = 8;
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// Entry index of an entry that was never found
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const TInt KDLEntryNotFound = -1;
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::CDirectoryLocalizer
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// C++ default constructor can NOT contain any code, that might leave.
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// -----------------------------------------------------------------------------
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//
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CDirectoryLocalizer::CDirectoryLocalizer()
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    :   iCurrentEntry( -1 ),
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        iIconIndices( KDLEntryGranularity )
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    {
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    }
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CDirectoryLocalizer::ConstructL()
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    {
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    // Initialize the arrays to hold the data
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    iPaths = new( ELeave ) CArrayPtrFlat< TDesC >( KDLEntryGranularity );
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    iLocalizedNames = new( ELeave ) CArrayPtrFlat< TDesC >( KDLEntryGranularity );
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    iExtraData = new( ELeave ) CArrayPtrFlat< TDesC >( KDLEntryGranularity );
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    }
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CDirectoryLocalizer* CDirectoryLocalizer::NewL()
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    {
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    CDirectoryLocalizer* self = new( ELeave ) CDirectoryLocalizer();
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    // Will be set to NULL if CCoeEnv does not exist
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    CCoeEnv* cone = CCoeEnv::Static();
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    RFs fsSession;
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    if( cone )
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        {
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        // Get a fs session from CCoeEnv
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        fsSession = cone->FsSession();
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        }
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    else
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        {
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        // Create own fs session (take care for also closing it)
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        User::LeaveIfError( fsSession.Connect() ) ;
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        CleanupClosePushL( fsSession );
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        }
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    // Get the correct language version
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    TFileName resourceFileName( KDLDefaultResourceFile );
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    BaflUtils::NearestLanguageFile( fsSession, resourceFileName );
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    RResourceFile resourceFile;
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    resourceFile.OpenL( fsSession, resourceFileName );  // Open the resource file
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    CleanupClosePushL( resourceFile );
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    // The argument of ConfirmSignatureL has no meaning.
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    // Declaration of the method is ConfirmSignatureL(TInt /*aSignature*/);
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    resourceFile.ConfirmSignatureL( 0 );
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    // Read the resource containing the default entries.
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    HBufC8* defaultEntries = resourceFile.AllocReadLC( R_DIRECTORYLOCALIZER_DEFAULT_ENTRIES );
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    TResourceReader reader;
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    reader.SetBuffer( defaultEntries );
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    // Add the default entries to the localizer
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    self->AddFromResourceL( reader );
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   115
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    CleanupStack::PopAndDestroy();  // defaultEntries
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    CleanupStack::PopAndDestroy();  // resourceFile.Close()
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    if( !cone )
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        {
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        // If created new fs session - close it:
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        CleanupStack::PopAndDestroy();  // fsSession.Close()
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        }
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    CleanupStack::Pop();            // self
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    return self;
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    }
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   126
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CDirectoryLocalizer* CDirectoryLocalizer::NewL( TResourceReader& aReader )
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    {
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    CDirectoryLocalizer* self = new( ELeave ) CDirectoryLocalizer();
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    CleanupStack::PushL( self );
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    self->ConstructL();
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    self->AddFromResourceL( aReader );
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    CleanupStack::Pop();
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    return self;
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    }
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   141
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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EXPORT_C CDirectoryLocalizer* CDirectoryLocalizer::NewL( TInt aResourceId )
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    {
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    TResourceReader reader;
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    CCoeEnv::Static()->CreateResourceReaderLC( reader, aResourceId );
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    CDirectoryLocalizer* self = NewL( reader );
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    CleanupStack::PopAndDestroy();      // reader
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    return self;
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    }
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   155
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// Destructor
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EXPORT_C CDirectoryLocalizer::~CDirectoryLocalizer()
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    {
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    if( iPaths )
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        {
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        iPaths->ResetAndDestroy();
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        }
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    if( iLocalizedNames )
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        {
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        iLocalizedNames->ResetAndDestroy();
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        }
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    if( iExtraData )
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        {
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        iExtraData->ResetAndDestroy();
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        }
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    delete iPaths;
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    delete iLocalizedNames;
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    delete iExtraData;
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    iIconIndices.Close();       // RArray going out of scope. Must Close().
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    }
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   176
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::AddFromResourceL
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   179
// ?implementation_description
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C void CDirectoryLocalizer::AddFromResourceL( TResourceReader& aReader )
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    {
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    // Read the amount of entries in the resource
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    TInt directoryCount( aReader.ReadInt16() );
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   187
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    // read directory data from the resource
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    for ( TInt i( 0 ); i < directoryCount; i++ )
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        {
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        // Read path
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        HBufC* desc = aReader.ReadHBufCL();     // returns NULL if the resource string is empty
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        // an entry must always have a path
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   194
        __ASSERT_ALWAYS( desc, User::Panic( _L("DirLocalizer"), 0 ) );
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   195
        CleanupStack::PushL( desc );
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        iPaths->AppendL( desc );
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   197
        CleanupStack::Pop();
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   198
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        // Read logical name
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        desc = aReader.ReadHBufCL();
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   201
        // an entry must always have a logical name
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   202
        __ASSERT_ALWAYS( desc, User::Panic( _L("DirLocalizer"), 0 ) );
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   203
        CleanupStack::PushL( desc );
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   204
        iLocalizedNames->AppendL( desc );
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   205
        CleanupStack::Pop();
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   206
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        // Read extra data
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        desc = aReader.ReadHBufCL();    // Append also null pointer to the array
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   209
        CleanupStack::PushL( desc );    // Nulls will be handled in ExtraData()
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   210
        iExtraData->AppendL( desc );
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   211
        CleanupStack::Pop();
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   212
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        // Read icon index
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        iIconIndices.Append( aReader.ReadInt16() );
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   215
        }
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   216
    }
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   217
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::AddFromResourceL
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// ?implementation_description
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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   223
//
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   224
EXPORT_C void CDirectoryLocalizer::AddFromResourceL( TInt aResourceId )
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    {
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    TResourceReader reader;
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    CCoeEnv::Static()->CreateResourceReaderLC( reader, aResourceId );
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    this->AddFromResourceL( reader );
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    CleanupStack::PopAndDestroy();      // reader
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    }
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::SetFullPath
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// ?implementation_description
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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#ifdef RD_MULTIPLE_DRIVE
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EXPORT_C void CDirectoryLocalizer::SetFullPath( const TDesC& aFullPath )
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    {
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    TBool localizationNeeded( EFalse );
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    // Will be set to NULL if CCoeEnv does not exist
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    CCoeEnv* cone = CCoeEnv::Static();
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    RFs fs;
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    if( cone )
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        {
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        // Get a fs session from CCoeEnv
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        fs = cone->FsSession();
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        }
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    else
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        {
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        // Create own fs session (take care for also closing it)
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        User::LeaveIfError( fs.Connect() ) ;
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        CleanupClosePushL( fs );
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        }  
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    if ( aFullPath.Length() > 0 )
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        {
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        TInt drive = TDriveUnit( aFullPath );
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        TDriveInfo driveInfo;        
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        if ( fs.Drive( driveInfo, drive ) == KErrNone )
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            {
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            // No localization for remote drives
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            localizationNeeded = !( driveInfo.iDriveAtt & KDriveAttRemote );
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            }
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        }
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    if( !cone )
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        {
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        // If created new fs session - close it:
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        CleanupStack::PopAndDestroy();  // fsSession.Close()
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        }
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    if ( localizationNeeded )
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        {
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        TInt pathType( PathInfo::PathType( aFullPath ) );
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        if ( pathType != PathInfo::ENotSystemPath )
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            {
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            TInt count ( iPaths->Count() );
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            for ( TInt i( 0 ); i < count; i++ )
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                {                
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                if ( PathInfo::PathType( *( iPaths->At( i ) ) ) == pathType )
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                    {
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                    iCurrentEntry = i;
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                    return;
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                    }
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                }
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            }
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        }
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    iCurrentEntry = KDLEntryNotFound;   // Didn't find a match
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    }
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#else // RD_MULTIPLE_DRIVE 
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EXPORT_C void CDirectoryLocalizer::SetFullPath( const TDesC& aFullPath )
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    {
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    // Looks up aFullPath in the entry list. The operation is case-insensitive
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    TInt count ( iPaths->Count() );
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    for ( TInt i( 0 ); i < count; i++ )
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        {
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        if ( ( iPaths->At( i )->CompareF( aFullPath ) ) == 0 )  // if the descriptors are equal after folding
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            {
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            iCurrentEntry = i;
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            return;
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            }
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        }
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    iCurrentEntry = KDLEntryNotFound;   // Didn't find a match
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    } 
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#endif // RD_MULTIPLE_DRIVE
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::IsLocalized
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// ?implementation_description
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C TBool CDirectoryLocalizer::IsLocalized() const
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    {
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    if ( iCurrentEntry == KDLEntryNotFound )    // SetFullPath() hadn't found the path from the list
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        {
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        return EFalse;
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        }
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    else
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        {
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        return ETrue;
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        }
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    }
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   326
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::LocalizedName
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// ?implementation_description
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C const TDesC& CDirectoryLocalizer::LocalizedName() const
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    {
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    if ( iCurrentEntry == KDLEntryNotFound )    // SetFullPath() hadn't found the path from the list
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        {
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        return KNullDesC;
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        }
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    else
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        {
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        return *iLocalizedNames->At( iCurrentEntry );
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        }
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    }
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::ExtraData
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// ?implementation_description
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C const TDesC& CDirectoryLocalizer::ExtraData() const
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    {
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    if ( iCurrentEntry == KDLEntryNotFound )    // SetFullPath() hadn't found the path from the list
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        {
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        return KNullDesC;
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        }
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    else
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        {
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        TDesC* desc = iExtraData->At( iCurrentEntry );
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        if ( desc == NULL )     // ExtraData might be a NULL ( see AddFromResourceL() )
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            {
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            return KNullDesC;
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            }
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        else
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            {
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            return *desc;
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            }
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        }
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    }
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   370
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// -----------------------------------------------------------------------------
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// CDirectoryLocalizer::Icon
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// ?implementation_description
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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EXPORT_C TInt CDirectoryLocalizer::Icon() const
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    {
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    if ( iCurrentEntry == KDLEntryNotFound )    // SetFullPath() hadn't found the path from the list
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        {
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        return KErrGeneral;
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        }
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    else
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        {
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        return iIconIndices[ iCurrentEntry ];
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        }
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    }
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   388
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//  End of File