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

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // f32\sfile\sf_decomp.cpp

    15 // 

    16 //

    17 

    18 #include "sf_deflate.h"

    19 #include <f32file.h>

    20 #include <e32svr.h>

    21 

    22  

    23 TFileInput::TFileInput(RFile& aFile)

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

    25 	{

    26 	// issue first read

    27 	aFile.Read(iPtr,iStat);

    28 	}

    29 

    30 void TFileInput::Cancel()

    31 	{

    32 	// absorb signal if outstanding request

    33 	if (iReadBuf)

    34 		User::WaitForRequest(iStat);

    35 	}

    36 

    37 void TFileInput::UnderflowL()

    38 	{

    39 	TUint8* b=iReadBuf;

    40 	ASSERT(b!=NULL);

    41 	User::WaitForRequest(iStat);

    42 	iReadBuf=0;

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

    44 	if(iPtr.Length()==0)

    45 		User::Leave(KErrCorrupt);

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

    47 	// start reading to the next buffer

    48 	b = b==iBuf1 ? iBuf2 : iBuf1;

    49 	iPtr.Set(b,0,KBufSize);

    50 	iFile.Read(iPtr,iStat);

    51 	iReadBuf=b;

    52 	}