mulwidgets/mullogging/src/mullogger.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 00:28:09 +0200
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/*
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* Copyright (c) 2006-2007 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 "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:  Logging utility for MC Photos
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*
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*/
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// CLASS HEADER
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#include "mullogger.h"
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// EXTERNAL INCLUDES
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#include <e32debug.h>
3
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//#include <flogger.h>
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// INTERNAL INCLUDES
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//#include "mullogchunk.h"
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namespace MulLogger
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    {
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    /// constants
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    const TInt KMaxLoggingBufferLength = 256;
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/**
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 * TDes overflow handler
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 * Default overflow handler panics and we dont want to do 
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 * that in logging so need to implement our own handler.
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 */ 
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class TDes8OverFlowHandler : public TDes8Overflow
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    {
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    public: // from TDes8Overflow
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        /// @ref TDes8Overflow::Overflow
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        void Overflow( TDes8& /*aDes*/ )
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            {
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            // do nothing, we cant allocate so just eat the error
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            }
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    };
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// -----------------------------------------------------------------------------
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// MulLogger::WriteFormat
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// -----------------------------------------------------------------------------
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EXPORT_C void WriteFormat( TRefByValue< const TDesC8 > aFmt, ... )
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    {
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    /// writeable buffer, in emulator this is in stack
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    TBuf8< KMaxLoggingBufferLength > gWriteBuffer;
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    // take the ellipsis parameter
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    VA_LIST args;
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    VA_START( args, aFmt );
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    // create overflow handler
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    TDes8OverFlowHandler overflowhandler;
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    // clear old data by setting length to zero
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    gWriteBuffer.SetLength( 0 );
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    // append the parameters to the descriptor
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    gWriteBuffer.AppendFormatList( aFmt, args, &overflowhandler );
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    // end the ellipsis handling
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    VA_END( args );
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    TBuf16<256> buffer;
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    buffer.Copy(gWriteBuffer);
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    RDebug::Print(_L("MUL:-%S"),&buffer);
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    } // namespace
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} // namespace