/* Copyright (c) 2009 The Khronos Group Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and/or associated documentation files (the

 * "Materials"), to deal in the Materials without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sublicense, and/or sell copies of the Materials, and to

 * permit persons to whom the Materials are furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Materials.

 *

 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

 * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

 */

#include "owfdebug.h"

#ifdef DEBUG_LOG

#include <pthread.h>

#include "owfdebug.h"

#include "owftypes.h"

#include "owfdebug.h"

#ifdef __cplusplus

extern "C" {

#endif

#ifndef OWF_DEBUG_PREFIX

#define OWF_DEBUG_PREFIX "OWF: "

#endif

int xprintf(const char* aFormat, ...);

/* This pair of macros are a standard trick 

 * to convert the content of a macro into a string after expansion

 * TOSTR causes the macro to be expanded, then TOSTR2 applies quotes.

 * This is used because .MMP MACRO does not consistantly process macro value quotes.

 */

#define TOSTR2(x)    #x

#define TOSTR(x)    TOSTR2(x)

/* Filters debug messages based on filename or function name.

 * @param symbol the file or function name string generated by predefined macros

 * @param symlen the length of the string (calculated at compile-time)

 * Defining DEBUG_LOG enables all log file output. Do this in the make or .MMP file

 * The file output can be filtered by filename or by function name:

 * Defining DEBUG_FUNCTION=fnname will filter for all functions STARTING with the name fnname

 * Defining DEBUG_FILE=filename will filter for all functions ending with the name filename

 * 

 * These filters utilise the predefined macros __FILE__ and __FUNCTION__ which are defined in current standards,

 * but may contain platform-specific features such as path names, or linkage decoration,

 * so the filter-string may require some platform-specific tuning.

 * 

 * Note that use of #pragma message may also be platform-specific, and is only present in order to 

 * print clues about the format of the __FILE__ and __FUNCTION__ macros.

 */

int  OWF_Debug_DoLog(const char* symbol,int symlen)

    {

#if defined(DEBUG_LOG_FILE)

#pragma message ("DEBUG filter DEBUG_FILE= '" TOSTR(DEBUG_FILE) "' eg= '" __FILE__ "'")

    if (symlen>=(sizeof(TOSTR(DEBUG_FILE))-1))

        {

        return strncmp( symbol+symlen-(sizeof(TOSTR(DEBUG_FILE))-1) , TOSTR(DEBUG_FILE) , sizeof(TOSTR(DEBUG_FILE))-1 )==0;

        }

    else

        return 0;

#elif defined(DEBUG_LOG_FUNCTION)

#pragma message("DEBUG filter DEBUG_FUNCTION= '" TOSTR(DEBUG_FUNCTION) "' eg= '" __FUNCTION__ "'")

    if (symlen>=(sizeof(TOSTR(DEBUG_FILE))-1))

        {

        return(strncmp(TOSTR(DEBUG_FUNCTION),symbol,sizeof(TOSTR(DEBUG_FUNCTION))-1)==0);

        }

    else

        return 0;

#else

    (void)symbol;

    (void)symlen;

    return 1;

#endif

    }

void OWF_Debug_Print(const char* format, ...)

{    

    va_list                 ap;

    char                    __spager[512];

    va_start(ap, format);

    __spager[0] = 0;

    vsnprintf(__spager, 511, format, ap);

    xprintf("%s %s\n", OWF_DEBUG_PREFIX, __spager);

    va_end(ap);

}

void OWF_Debug_Trace(const char* fmt, ...)

{

    fmt = fmt;

}

void OWF_Debug_TraceIndent()

{

}

void OWF_Debug_TraceUndent()

{

}

void OWF_Debug_TraceEnter(const char* func)

{

    if (func)

    {

        OWF_Debug_Trace("ENTER %s", func);

    }

    OWF_Debug_TraceIndent();

}

void OWF_Debug_TraceExit(const char* func)

{

    OWF_Debug_TraceUndent();

    if (func)

    {

        OWF_Debug_Trace("EXIT %s", func);

    }

}

#ifdef __cplusplus

}

#endif

#else

#endif /* DEBUG */