--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testexecfw/statsrv/device/source/statapi/src/datasupplier_file.cpp	Mon Mar 08 15:03:44 2010 +0800
@@ -0,0 +1,235 @@
+/*
+* Copyright (c) 2005-2009 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: 
+*
+*/
+
+
+
+ /*************************************************************************
+ *
+ * System Includes
+ *
+ *************************************************************************/
+
+/*************************************************************************
+ *
+ * Local Includes
+ *
+ *************************************************************************/
+
+#include "datasupplier_file.h"
+
+/*************************************************************************
+ *
+ * Definitions
+ *
+ *************************************************************************/
+
+/*************************************************************************
+ *
+ * CDataSupplierFile - Construction
+ *
+ *************************************************************************/
+CDataSupplierFile *CDataSupplierFile::NewL()
+	{
+	CDataSupplierFile *self = new (ELeave) CDataSupplierFile();
+
+	CleanupStack::PushL(self);
+
+	self->ConstructL();
+
+	CleanupStack::Pop();
+
+	return self;
+	}
+
+CDataSupplierFile::CDataSupplierFile() : CBase(),
+	iDataBuffer( NULL ), iCurrentLocation( 0 )
+	{
+	;
+	}
+
+void CDataSupplierFile::ConstructL( void ) 
+	{
+	iLock.CreateLocal( EOwnerProcess );
+	}
+
+CDataSupplierFile::~CDataSupplierFile( )
+	{
+	iLock.Wait( );
+		{
+		iCurrentLocation = 0;
+
+		iFsSession.Close();
+
+		iLock.Close( );
+		}
+	}
+
+/*************************************************************************
+ *
+ * CDataSupplierFile - Public interface
+ *
+ *************************************************************************/
+
+/*************************************************************************
+ *
+ * Delete
+ *
+ *************************************************************************/
+
+void CDataSupplierFile::Delete( void ) 
+	{
+	delete this;
+	}
+
+/*************************************************************************
+ *
+ * GetTotalSize
+ *
+ *************************************************************************/
+
+TInt CDataSupplierFile::GetTotalSize( TInt &aTotalSize )
+	{
+	TInt	err = KErrNone;
+	TInt	size = 0;
+
+	iLock.Wait( );
+		{
+		RFile	file;
+
+		err = file.Open( iFsSession, iFilePath, EFileRead | EFileStream | EFileShareReadersOnly );
+
+		if( err == KErrNone )
+			{
+			err = file.Size( size );
+
+			if( err == KErrNone )
+				{
+				aTotalSize = size;
+				}
+
+			file.Close( );
+			}
+
+		iLock.Signal( );
+		}
+
+	return ( err );
+	}
+
+/*************************************************************************
+ *
+ * GetRemainingSize
+ *
+ *************************************************************************/
+
+TInt CDataSupplierFile::GetRemainingSize( TInt &aRemainingSize )
+	{
+	TInt	err = KErrNone;
+	TInt	remaining = 0;
+
+	iLock.Wait( );
+		{
+		TInt	totalSize =	0;
+
+		err = GetTotalSize( totalSize );
+
+		if( err == KErrNone )
+			{
+			remaining = totalSize - iCurrentLocation;
+
+			aRemainingSize = remaining;
+			}
+
+		iLock.Signal( );
+		}
+
+	return ( err );
+	}
+
+/*************************************************************************
+ *
+ * SetData
+ *
+ *************************************************************************/
+
+TInt CDataSupplierFile::SetData( const TDesC8 &aSource )
+	{
+	TInt	err = KErrNone;
+
+	err = iFsSession.Connect( );
+
+	if( err == KErrNone )
+		{
+		iLock.Wait( );
+			{
+			iFilePath.Copy( aSource );
+
+			// Do a query on the file size to check 
+			// we can access it.
+			TInt totalSize = 0;
+			err = GetTotalSize( totalSize );
+
+			iCurrentLocation = 0;
+			iLock.Signal( );
+			}
+		}
+
+	return ( err );
+	}
+
+/*************************************************************************
+ *
+ * GetData
+ *
+ *************************************************************************/
+
+TInt CDataSupplierFile::GetData( HBufC8 &aDestination, 
+				TInt aLengthToCopy, TInt &aActuallyCopied )
+	{
+	TInt	err = KErrNone;
+
+	iLock.Wait( );
+		{
+		TInt remainingSize = 0;
+		err = GetRemainingSize( remainingSize );
+
+		RFile	file;
+		err = file.Open( iFsSession, iFilePath, EFileRead | EFileStream | EFileShareReadersOnly );
+
+		if( err == KErrNone )
+			{
+			TInt toCopy = Min( aLengthToCopy, remainingSize );
+
+			TPtr8 pBuffer( aDestination.Des() );
+
+			err = file.Read( iCurrentLocation,
+								pBuffer, toCopy);
+
+			if( err == KErrNone )
+				{
+				iCurrentLocation += toCopy;
+				aActuallyCopied = toCopy;
+				}
+
+			file.Close( );
+			}
+
+		iLock.Signal( );
+		}
+
+	return ( err );
+	}