/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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:

*

*/

#ifndef TRACE_H

#define TRACE_H

#include "traceconfiguration.hrh"

#ifdef TRACE_INTO_FILE

#include <flogger.h> // RFileLogger

#else

#include <e32debug.h> // RDebug

#endif

//-----------------------------------------------------------------------------

// Constants

//-----------------------------------------------------------------------------

//

/**

* Prefix trace macro to complete tracing with component name.

* Returns TDesC which can be used directly with RDebug or RFileLogger.

*/

#define _PREFIX_TRACE( aMsg ) TPtrC( (const TText*)L"[DisplaySource]: " L##aMsg )

/**

* Prefix error trace

*/

#define _PREFIX_ERROR( aMsg ) _PREFIX_TRACE( "[ERROR: %d]: " L##aMsg )

/**

* Prefix info trace.

*/

#define _PREFIX_INFO( aMsg ) _PREFIX_TRACE( "[INFO]: " L##aMsg )

/**

* Prefix macro for strings

*/

#define _PREFIX_CHAR( aMsg ) (const char*)"[DisplaySource]: " ##aMsg

/**

* Define needed directories if TRACE_INTO_FILE macro in use

*/

#ifdef TRACE_INTO_FILE

    _LIT( KDir, "DisplaySource" );

    _LIT( KFile, "DisplaySource.log" );

    _LIT( KFullPath, "c:\\logs\\DisplaySource\\" );

#endif

//-----------------------------------------------------------------------------

// Error trace macros

//-----------------------------------------------------------------------------

//

#ifdef ERROR_TRACE

    /**

    * Error trace definitions.

    */

    #ifdef TRACE_INTO_FILE

        #define ERROR( aErr, aMsg )\

            {\

            if( aErr < KErrNone )\

                {\

                RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, _PREFIX_ERROR( aMsg ), aErr );\

                }\

            }

        #define ERROR_1( aErr, aMsg, aP1 )\

            {\

            if( aErr < KErrNone )\

                {\

                RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, _PREFIX_ERROR( aMsg ), aErr, aP1 );\

                }\

            }

        #define ERROR_2( aErr, aMsg, aP1, aP2 )\

            {\

            if( aErr < KErrNone )\

                {\

                RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, _PREFIX_ERROR( aMsg ), aErr, aP1, aP2 );\

                }\

            }

        #define ERROR_3( aErr, aMsg, aP1, aP2, aP3 )\

            {\

            if( aErr < KErrNone )\

                {\

                RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, _PREFIX_ERROR( aMsg ), aErr, aP1, aP2, aP3 );\

                }\

            }

    #else//TRACE_INTO_FILE not defined

        #define ERROR( aErr, aMsg )\

            {\

            if( aErr < KErrNone )\

                {\

                RDebug::Print( _PREFIX_ERROR( aMsg ), aErr );\

                }\

            }

        #define ERROR_1( aErr, aMsg, aP1 )\

            {\

            if( aErr < KErrNone )\

                {\

                RDebug::Print( _PREFIX_ERROR( aMsg ), aErr, aP1 );\

                }\

            }

        #define ERROR_2( aErr, aMsg, aP1, aP2 )\

            {\

            if( aErr < KErrNone )\

                {\

                RDebug::Print( _PREFIX_ERROR( aMsg ), aErr, aP1, aP2 );\

                }\

            }

        #define ERROR_3( aErr, aMsg, aP1, aP2, aP3 )\

            {\

            if( aErr < KErrNone )\

                {\

                RDebug::Print( _PREFIX_ERROR( aMsg ), aErr, aP1, aP2, aP3 );\

                }\

            }

    #endif//TRACE_INTO_FILE

    #define ERROR_GEN( aMsg ) ERROR( KErrGeneral, aMsg )

    #define ERROR_GEN_1( aMsg, aP1 ) ERROR_1( KErrGeneral, aMsg, aP1 )

    #define ERROR_GEN_2( aMsg, aP1, aP2 ) ERROR_2( KErrGeneral, aMsg, aP1, aP2 )

    #define ERROR_GEN_3( aMsg, aP1, aP2, aP3 ) ERROR_3( KErrGeneral, aMsg, aP1, aP3 )

#else//ERROR_TRACE not defined

    #define ERROR( aErr, aMsg )

    #define ERROR_1( aErr, aMsg, aP1 )

    #define ERROR_2( aErr, aMsg, aP1, aP2 )

    #define ERROR_3( aErr, aMsg, aP1, aP2, aP3 )

    #define ERROR_GEN( aMsg )

    #define ERROR_GEN_1( aMsg, aP1 )

    #define ERROR_GEN_2( aMsg, aP1, aP2 )

    #define ERROR_GEN_3( aMsg, aP1, aP2, aP3 )

#endif//ERROR_TRACE

//-----------------------------------------------------------------------------

// Info trace macros

//-----------------------------------------------------------------------------

//

#ifdef INFO_TRACE

    /**

    * Info log message definitions.

    */

    #ifdef TRACE_INTO_FILE

        #define INFO( aMsg )\

            {\

            RFileLogger::Write( KDir, KFile, EFileLoggingModeAppend, _PREFIX_INFO( aMsg ) );\

            }

        #define INFO_1( aMsg, aP1 )\

            {\

            RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, _PREFIX_INFO( aMsg ), aP1 );\

            }

        #define INFO_2( aMsg, aP1, aP2 )\

            {\

            RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, _PREFIX_INFO( aMsg ), aP1, aP2 );\

            }

        #define INFO_3( aMsg, aP1, aP2, aP3 )\

            {\

            RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, _PREFIX_INFO( aMsg ), aP1, aP2, aP3 );\

            }

    #else//TRACE_INTO_FILE not defined

        #define INFO( aMsg )\

            {\

            RDebug::Print( _PREFIX_INFO( aMsg ) );\

            }

        #define INFO_1( aMsg, aP1 )\

            {\

            RDebug::Print( _PREFIX_INFO( aMsg ), aP1 );\

            }

        #define INFO_2( aMsg, aP1, aP2 )\

            {\

            RDebug::Print( _PREFIX_INFO( aMsg ), aP1, aP2 );\

            }

        #define INFO_3( aMsg, aP1, aP2, aP3 )\

            {\

            RDebug::Print( _PREFIX_INFO( aMsg ), aP1, aP2, aP3 );\

            }

    #endif//TRACE_INTO_FILE

#else//INFO_TRACE not defined

    #define INFO( aMsg )

    #define INFO_1( aMsg, aP1 )

    #define INFO_2( aMsg, aP1, aP2 )

    #define INFO_3( aMsg, aP1, aP2, aP3 )

#endif//INFO_TRACE

//-----------------------------------------------------------------------------

// Function trace macros

//-----------------------------------------------------------------------------

//

#ifdef FUNC_TRACE

    /**

    * Function logging definitions.

    */

    #ifdef TRACE_INTO_FILE

        #define FUNC( aMsg, aP1 )\

            {\

            TPtrC8 trace( _S8( aMsg ) );\

            RFileLogger::WriteFormat( KDir, KFile, EFileLoggingModeAppend, trace, aP1 );\

            }\

    #else//TRACE_INTO_FILE not defined

        #define FUNC( aMsg, aP1 )\

            {\

            RDebug::Printf( aMsg, aP1 );\

            }\

    #endif//TRACE_INTO_FILE

    /**

    * Function trace helper class.

    *

    * NOTE:

    * LC -methods cannot be trapped. Therefore if LC -method leaves

    * END trace is used instead of LEAVE trace.

    * If you have an idea how to round this problem please tell.

    */

    _LIT8( KFuncNameTerminator, "(" );

    _LIT8( KFuncLeavePatternL, "L" );

    class TFuncLog

        {

        public:

            static void Cleanup( TAny* aPtr )

                {

                TFuncLog* self = static_cast< TFuncLog* >( aPtr );

                self->iLeft = ETrue;

                FUNC( _PREFIX_CHAR("%S-LEAVE"), &self->iFunc ); // Leave detected

                }

            inline TFuncLog( const char* aFunc ) :

                    iFunc( aFunc ? _S8( aFunc ) : _S8("") ),

                    iLeft( EFalse ),

                    iCleanupItem( Cleanup, this ),

                    iCanLeave( EFalse )

                {

                TInt pos( iFunc.Find( KFuncNameTerminator ) );

                if( pos != KErrNotFound )

                    {

                    iFunc.Set( iFunc.Left( pos ) );

                    iCanLeave = !iFunc.Right( KFuncLeavePatternL().Length() ).Compare( KFuncLeavePatternL );

                    if ( iCanLeave )

                        {

                        CleanupStack::PushL( iCleanupItem ); // Ignore warnings

                        }

                    }

                FUNC( _PREFIX_CHAR("%S-START"), &iFunc );

                }

            inline ~TFuncLog()

                {

                if ( !iLeft )

                    {

                    if ( iCanLeave )

                        {

                        CleanupStack::Pop( this ); // Pop the cleanup item

                        }

                    FUNC( _PREFIX_CHAR("%S-END"), &iFunc ); // Normally finished

                    }

                }

        private: // Data

            TPtrC8 iFunc;

            TBool iLeft;

            TCleanupItem iCleanupItem;

            TBool iCanLeave;

        };

    #define FUNC_LOG TFuncLog _fl( __PRETTY_FUNCTION__ );

#else//FUNC_TRACE not defined

    #define FUNC_LOG

#endif//FUNC_TRACE

#endif