--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/commands/chkdeps/sf_decomp.cpp	Wed Jun 23 15:52:26 2010 +0100
@@ -0,0 +1,52 @@
+// 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;
+	}