/*

* Copyright (c) 2006-2009 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:

* Name        : LibLogger.h

* Part of     : LIBC/logger

* Contained MRT library code tracing macros and class definition.

* Version     : 1.0

*/

#ifndef LIB_LOGGER_H

#define LIB_LOGGER_H

//  INCLUDES

#include <e32def.h>

// DATA TYPES

/* Log message type (Info/Minor/Major/Critical) */

typedef enum TLibTraceMessageType

{

	ELibTraceTypeInfo = 1,

	ELibTraceTypeMinor = 2,

	ELibTraceTypeMajor = 4,

	ELibTraceTypeCritical = 8

}TLibTraceMessageType;

// MACROS

// only logging for critical/major

//#define LOG_BITS ( ELibTraceTypeCritical | ELibTraceTypeMajor | ELibTraceTypeInfo )

#define LOG_BITS ( ELibTraceTypeCritical | ELibTraceTypeMajor )

/* this macro will be used for file and line no.

 */

#define LOG_FILE_NAME_LINE __FILE__, __LINE__

#ifdef __cplusplus

extern "C" {

#endif

/*

 * Message logging interface

 */

IMPORT_C int LibTracer(TLibTraceMessageType aLogMessageType,

							char *aFileName,

							int aLine,

							char *aFormat,

							...);

/*

 * Message logging interface

 */

IMPORT_C int LibTracerMarkerList(TLibTraceMessageType aLogMessageType,

							char *aFileName,

							int aLine,

							char *aFormat,

							VA_LIST* aMarkerList);

/*

 * dumping the message in hex format of specific length

 */

IMPORT_C int LibTracerPartialHexDump(TLibTraceMessageType aLogMessageType,

                            char *aFileName,

							int aLine,

							char *aMessage,

							char *aStr,

							int aStrLen);

/*

 * dumping the message in hex format

 */

IMPORT_C int LibTracerHexDump(TLibTraceMessageType aLogMessageType,

                            char *aFileName,

							int aLine,

							char *aMessage,

							char *aFormat,

							...);

/*

 * dumping the message in hex format

 */

IMPORT_C int LibTracerHexDumpMarkerList(TLibTraceMessageType aLogMessageType,

                            char *aFileName,

							int aLine,

							char *aMessage,

							char *aFormat,

							VA_LIST* aMarkerList);

/*

 * Only logs filename and line no with timestamp

 */

IMPORT_C int LibLineExecTracer(char *aFileName, int aLine);

/*

 * Only logging/trace message without timestamp

 */

IMPORT_C int LibMessageTracer(TLibTraceMessageType aLogMessageType,

							char *aFormat,

							VA_LIST* aMarkerList);

/*

 * Only logging/trace message without timestamp

 */

IMPORT_C int LibHexDumpMessagePartTracer(TLibTraceMessageType aLogMessageType,

							char* aMessage,

							char *aFormat,

							VA_LIST* aMarkerList);

#ifdef __cplusplus

}

#endif

// We are unable to compile the component using non-variadic macros from command line.

// throwing error "badly punctuated parameter list in `#define'"

#if defined(_DEBUG)

//#pragma message("LibC Trace - ENABLE.")

#ifdef __cplusplus

// C++ source code

class CLogger // codescanner::missingcclass

    {

    public:

    CLogger(char* aFileName, int aLine) : iFileName ( aFileName ), iLine ( aLine) {}

    inline int Tracer(TLibTraceMessageType aLogMessageType, char* aFormat, ...)

        {

        int len = 0;

        if ( LOG_BITS & aLogMessageType )

            {

            VA_LIST marker;

            VA_START(marker, aFormat);

            len = LibTracerMarkerList(aLogMessageType, iFileName, iLine, aFormat, &marker);

            VA_END(marker);

            }

        return len;

        }

    inline int Dump(TLibTraceMessageType aLogMessageType, char* aMessage, char* aFormat, ...)

        {

        int len = 0;

        if ( LOG_BITS & aLogMessageType )

            {

            VA_LIST marker;

            VA_START(marker, aFormat);

            len = LibTracerHexDumpMarkerList(aLogMessageType, iFileName, iLine, aMessage, aFormat, &marker);

            VA_END(marker);

            }

        return len;

        }

    private:

    char* iFileName;

    int iLine;

    };

#else // __cplusplus

// C souce code.

static int LibcTracer(TLibTraceMessageType aLogMessageType, char* aFormat, ...)

    {

    int len = 0;

    if ( LOG_BITS & aLogMessageType )

        {

        VA_LIST marker;

        VA_START(marker, aFormat);

        len = LibMessageTracer(aLogMessageType, aFormat, &marker);

        VA_END(marker);

        }

    return len;

    }

static int LibHexTracer(TLibTraceMessageType aLogMessageType, char* aMessage, char* aFormat, ...)

    {

    int len = 0;

    if ( LOG_BITS & aLogMessageType )

        {

        VA_LIST marker;

        VA_START(marker, aFormat);

        len = LibHexDumpMessagePartTracer(aLogMessageType, aMessage, aFormat, &marker);

        VA_END(marker);

        }

    return len;

    }

#endif // __cplusplus

/*

 * usage : LIB_TRACE(

 *          <messagetype>{ELibTraceTypeInfo|ELibTraceTypeMinor|ELibTraceTypeMajor|ELibTraceTypeCritical},

 *          format,

 *          args);

 * Remark : Similar to printf except the first additional parameter for message type.

 */

#ifdef __cplusplus

#define LIB_TRACE CLogger(LOG_FILE_NAME_LINE).Tracer

#else

#define LIB_TRACE LibLineExecTracer(LOG_FILE_NAME_LINE); \

                   LibcTracer

#endif

/*

 * usage : LIB_TRACE_DUMP(

 *          <messagetype>{ELibTraceTypeInfo|ELibTraceTypeMinor|ELibTraceTypeMajor|ELibTraceTypeCritical},

 *          message, // user wants to add any message before dump, (i.e. TCP message)

 *          format,

 *          args);

 */

#ifdef __cplusplus

#define LIB_TRACE_DUMP CLogger(LOG_FILE_NAME_LINE).Dump

#else

#define LIB_TRACE_DUMP LibLineExecTracer(LOG_FILE_NAME_LINE); \

                    LibHexTracer

#endif

/*

 * usage : LIB_TRACE_DUMP_LEN(

 *          <messagetype>{ELibTraceTypeInfo|ELibTraceTypeMinor|ELibTraceTypeMajor|ELibTraceTypeCritical},

 *          message, // user wants to add any message before dump, (i.e. TCP message)

 *          dumpstring,

 *          stringlength);

 */

#define LIB_TRACE_DUMP_LEN(messageType, message, dumpString, dumpStringLen) \

    { \

    if ( LOG_BITS & messageType ) \

        { \

	    LibTracerPartialHexDump(messageType, \

	                    LOG_FILE_NAME_LINE, \

					    message, \

						dumpString, \

						dumpStringLen); \

        } \

    }

#else

// compilation message

//#pragma message("LibC Trace - DISABLE.")

// Release mode, nothing.

/* Release */

#ifdef __cplusplus

inline TInt LibTracerDummy(...)

        {

        return 0;

        }

#else

static TInt LibTracerDummy(TLibTraceMessageType aLogMessageType, ...)

        {

        return 0;

        }

#endif

#define LIB_TRACE        0 & LibTracerDummy

#define LIB_TRACE_DUMP 0 & LibTracerDummy

#define LIB_TRACE_DUMP_LEN 0 & LibTracerDummy

#endif // _DEBUG

#endif //LIB_LOGGER_H

// End of file