userlibandfileserver/fileserver/sfile/sf_decomp.cpp
author John Imhofe
Mon, 19 Oct 2009 15:55:17 +0100
changeset 0 a41df078684a
permissions -rw-r--r--
Convert Kernelhwsrv package from SFL to EPL kernel\eka\compsupp is subject to the ARM EABI LICENSE userlibandfileserver\fatfilenameconversionplugins\unicodeTables is subject to the Unicode license kernel\eka\kernel\zlib is subject to the zlib license
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// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// f32\sfile\sf_decomp.cpp
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// 
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//
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#include "sf_deflate.h"
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#include <f32file.h>
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#include <e32svr.h>
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TFileInput::TFileInput(RFile& aFile)
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	:iFile(aFile),iReadBuf(iBuf1),iPtr(iBuf1,KBufSize)
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	{
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	// issue first read
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	aFile.Read(iPtr,iStat);
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	}
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void TFileInput::Cancel()
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	{
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	// absorb signal if outstanding request
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	if (iReadBuf)
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		User::WaitForRequest(iStat);
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	}
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void TFileInput::UnderflowL()
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	{
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	TUint8* b=iReadBuf;
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	ASSERT(b!=NULL);
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	User::WaitForRequest(iStat);
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	iReadBuf=0;
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	User::LeaveIfError(iStat.Int());
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	if(iPtr.Length()==0)
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		User::Leave(KErrCorrupt);
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	Set(b,iPtr.Length()*8);
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	// start reading to the next buffer
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	b = b==iBuf1 ? iBuf2 : iBuf1;
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	iPtr.Set(b,0,KBufSize);
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	iFile.Read(iPtr,iStat);
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	iReadBuf=b;
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	}