// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of the License "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:

 // f32\sfile\sf_decomp.cpp

 // 

 //

 #include "sf_deflate.h"

 #include <f32file.h>

 #include <e32svr.h>

 TFileInput::TFileInput(RFile& aFile)

 	:iFile(aFile),iReadBuf(iBuf1),iPtr(iBuf1,KBufSize)

 	{

 	// issue first read

 	aFile.Read(iPtr,iStat);

 	}

 void TFileInput::Cancel()

 	{

 	// absorb signal if outstanding request

 	if (iReadBuf)

 		User::WaitForRequest(iStat);

 	}

 void TFileInput::UnderflowL()

 	{

 	TUint8* b=iReadBuf;

 	ASSERT(b!=NULL);

 	User::WaitForRequest(iStat);

 	iReadBuf=0;

 	User::LeaveIfError(iStat.Int());

 	if(iPtr.Length()==0)

 		User::Leave(KErrCorrupt);

 	Set(b,iPtr.Length()*8);

 	// start reading to the next buffer

 	b = b==iBuf1 ? iBuf2 : iBuf1;

 	iPtr.Set(b,0,KBufSize);

 	iFile.Read(iPtr,iStat);

 	iReadBuf=b;

 	}