// 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;

	}