1 // Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description: CFileSystemImage implementation

    14 // 

    15 // 

    16 

    17 #include "filesystemimage.h"

    18 #include "debug.h"

    19 

    20 const TInt KImageFileMode = EFileShareReadersOnly | EFileRead;

    21 

    22 CFileSystemImage::CFileSystemImage() :

    23     iIsOpened( EFalse )

    24 	{

    25 	// No implementation required

    26 	}

    27 

    28 CFileSystemImage::~CFileSystemImage()

    29 	{

    30 	// iFile will be closed with the session if it's still open

    31 	iFs.Close();

    32 	delete iFileName;

    33 	}

    34 

    35 CFileSystemImage* CFileSystemImage::NewL( const TDesC& aFileName )

    36 	{

    37 	CFileSystemImage* self = new (ELeave) CFileSystemImage();

    38 	CleanupStack::PushL( self );

    39 	self->ConstructL( aFileName );

    40 	CleanupStack::Pop( self );

    41 	return self;

    42 	}

    43 

    44 void CFileSystemImage::ConstructL( const TDesC& aFileName )

    45 	{

    46 	TRACE_FUNC

    47 	User::LeaveIfError( iFs.Connect() );

    48 	iFileName = aFileName.AllocL();

    49 	TRACE_INFO(( _L( "Image file is '%S'" ), iFileName ))

    50 	}

    51 

    52 TInt CFileSystemImage::Open()

    53 	{

    54 	TRACE_FUNC

    55 	if ( iIsOpened )

    56 	    {

    57 	    TRACE_INFO(( _L( "Image already opened" ) ))

    58 	    return KErrNone;

    59 	    }

    60 	TInt err = iFile.Open( iFs, *iFileName, KImageFileMode );

    61 	if ( err == KErrNone )

    62 	    {

    63 	    iIsOpened = ETrue;

    64 	    }

    65 	TRACE_INFO(( _L( "Image opened with error %d" ), err ))

    66 	return err;

    67 	}

    68 

    69 TInt CFileSystemImage::Close()

    70 	{

    71 	if ( iIsOpened )

    72 	    {

    73 	    iFile.Close();

    74 	    iIsOpened = EFalse;

    75 	    }

    76 	return KErrNone;

    77 	}

    78 

    79 TInt CFileSystemImage::Read( const TInt64& aPos, TInt aLength, TDes8& aBuf )

    80 	{

    81 	return iFile.Read( aPos, aBuf, aLength );

    82 	}

    83 

    84 TInt CFileSystemImage::Write( const TInt64& /*aPos*/, TDesC8& /*aBuf*/ )

    85 	{

    86 	return KErrAccessDenied;

    87 	}

    88 

    89 TInt64 CFileSystemImage::Size()

    90 	{

    91 	TInt size;

    92 	iFile.Size( size );

    93 	return size;

    94 	}