/*

* Copyright (c) 2004 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:  Version provider for IM.

*

*/

#include "CAVersion.h"

#include "ChatDebugPrint.h"

#include <f32file.h>

#include <pathinfo.h>

// CONSTANTS

const TInt KChatVersionBuffer = 1024;

const TInt KDriveAndColon = 2;

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

// CAVersion::UpdateVersion

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

//

TInt CAVersion::UpdateVersion( RFs& aFs

                               , const TDesC& aOwnVersionFile

                               , const TDesC& aTargetFile )

    {

    CHAT_DP( D_CHAT_LIT( "CAVersion::UpdateVersion %S %S" ), &aOwnVersionFile,

             &aTargetFile );

    // Get ROM and C drives

    TBuf<KDriveAndColon> romDrive;

    TBuf<KDriveAndColon> cDrive;

    romDrive = PathInfo::RomRootPath().Left( KDriveAndColon );

    cDrive = PathInfo::PhoneMemoryRootPath().Left( KDriveAndColon );

    // Construct full path for private version file

    TFileName ownVersionFile;

    aFs.PrivatePath( ownVersionFile );

    ownVersionFile.Insert( 0, romDrive );

    ownVersionFile.Append( aOwnVersionFile );

    // Append drive to published version file

    TFileName targetFile;

    targetFile.Append( cDrive );

    targetFile.Append( aTargetFile );

    if ( ownVersionFile.Compare( targetFile ) == KErrNone )

        {

        //nothing to do

        return KErrNone;

        }

    TBuf8< KChatVersionBuffer > myBuffer;

    myBuffer.Zero();

    TInt err( KErrNone );

    RFile myInputFile;

    RFile myOutputFile;

    err = myInputFile.Open( aFs, ownVersionFile, EFileRead );

    if ( !err )

        {

        err = myOutputFile.Replace( aFs, targetFile, EFileWrite );

        }

#ifdef _DEBUG

    else

        {

        CHAT_DP( D_CHAT_LIT( "CAVersion::UpdateVersion Open %d" ), err );

        }

#endif

    if ( !err )

        {

        TBool more( ETrue );

        while ( !err && more )

            {

            err = myInputFile.Read( myBuffer, KChatVersionBuffer );

            if ( !myBuffer.Length() )

                {

                more = EFalse;

                }

            if ( !err )

                {

                err = myOutputFile.Write( myBuffer );

                }

#ifdef _DEBUG

            else

                {

                CHAT_DP( D_CHAT_LIT( "CAVersion::UpdateVersion Read %d" ),

                         err );

                }

            if ( err )

                {

                CHAT_DP( D_CHAT_LIT( "CAVersion::UpdateVersion Write %d" ),

                         err );

                }

#endif

            }

        }

#ifdef _DEBUG

    else

        {

        CHAT_DP( D_CHAT_LIT( "CAVersion::UpdateVersion Replace %d" ), err );

        }

#endif

    myInputFile.Close();

    myOutputFile.Close();

    return err;

    }

// End of file