/*

* Copyright (c) 2005 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: Provides functions for finding resource files.

*

*

*/

// INCLUDE FILES

#include <bautils.h>

#include "EPos_PosLmFileFinder.h"

// ================= MEMBER FUNCTIONS =======================

// -----------------------------------------------------------------------------

// PosLmFileFinder::ResourceFileL

//

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

EXPORT_C TInt PosLmFileFinder::ResourceFileL(

    TFileName* aFilename,

    RFs& aFileSession,

    const TDesC& aResourceFileName)

    {

    TInt ret = KErrNone;

    TBool fileFound = EFalse;

    // Check system drive first

    TInt sysDrive = KErrNotFound;

    if ( BaflUtils::GetSystemDrive( (TDriveNumber&) sysDrive  ) == KErrNone )

        {

        fileFound = IsResourceOnDriveL( sysDrive, aFilename, aFileSession, aResourceFileName );

        }

    if (!fileFound)

        {

        TDriveList driveList;

        User::LeaveIfError(aFileSession.DriveList(driveList));

        for ( TInt driveNumber = EDriveA; driveNumber <= EDriveZ && !fileFound; driveNumber++ )

            {

            // Skip system drive because it has already been checked.

            if ( driveNumber == sysDrive )

                {

                driveNumber++;

                }

            if ( driveList[driveNumber] && !( driveList[driveNumber] & KDriveAttRemote ) ) // avoid remote drives

                {

                TDriveInfo drvInfo;

                TInt err = aFileSession.Drive( drvInfo, driveNumber );

                if ( !err && drvInfo.iType != EMediaNotPresent )

                    {

                    fileFound = IsResourceOnDriveL(driveNumber, aFilename, aFileSession, aResourceFileName);

                    }

                }

            }

        }

	// If no *.R0* file is found, look for the .rsc file

    if (!fileFound)

        {

        TParse parse;

        parse.Set( aResourceFileName, NULL, NULL );

        TFindFile finder( aFileSession );

        if ( finder.FindByDir( parse.NameAndExt(), parse.Path() ) == KErrNone )

            {

        	fileFound = ETrue;

        	aFilename->Zero();

        	aFilename->Append( finder.File() );

            }

        }

    if (!fileFound)

        {

        // Cannot find file on any drive

        ret = KErrNotFound;

        }

    return ret;

    }

// -----------------------------------------------------------------------------

// PosLmFileFinder::IsResourceOnDriveL

//

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

TBool PosLmFileFinder::IsResourceOnDriveL(

    TInt aDrive,

    TFileName* aFilename,

    RFs& aFileSession,

    const TDesC& aResourceFileName)

    {

    TFileName* oldFilename = new (ELeave) TFileName();

    CleanupStack::PushL(oldFilename);

    TDriveUnit unit(aDrive);

    aFilename->Copy(unit.Name());

    aFilename->Append(aResourceFileName);

    oldFilename->Copy(*aFilename);

    BaflUtils::NearestLanguageFile(aFileSession, *aFilename);

    TBool fileFound = (aFilename->Compare(*oldFilename) != 0);

    CleanupStack::PopAndDestroy(oldFilename);

    return fileFound;

    }

//  End of File