/***************************************************************************/
/*                                                                         */
/*  ftdebug.c                                                              */
/*                                                                         */
/*    Debugging and logging component (body).                              */
/*                                                                         */
/*  Copyright 1996-2000 by                                                 */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/


/*************************************************************************/
/*                                                                       */
/* This component contains various macros and functions used to ease the */
/* debugging of the FreeType engine.  Its main purpose is in assertion   */
/* checking, tracing, and error detection.                               */
/*                                                                       */
/* There are now three debugging modes:                                  */
/*                                                                       */
/* - trace mode                                                          */
/*                                                                       */
/*   Error and trace messages are sent to the log file (which can be the */
/*   standard error output).                                             */
/*                                                                       */
/* - error mode                                                          */
/*                                                                       */
/*   Only error messages are generated.                                  */
/*                                                                       */
/* - release mode:                                                       */
/*                                                                       */
/*   No error message is sent or generated.  The code is free from any   */
/*   debugging parts.                                                    */
/*                                                                       */
/*************************************************************************/


#include "ftdebug.h"

#ifdef FT_DEBUG_LEVEL_TRACE
char ft_trace_levels[trace_max];
#endif


#if defined( FT_DEBUG_LEVEL_ERROR ) || defined( FT_DEBUG_LEVEL_TRACE )


#include <stdarg.h>
#include <stdlib.h>
#include <string.h>


FT_EXPORT_FUNC( void )  FT_Message( const char*  fmt, ... )
{
	va_list ap;


	va_start( ap, fmt );
	vprintf( fmt, ap );
	va_end( ap );
}


FT_EXPORT_FUNC( void )  FT_Panic( const char*  fmt, ... )
{
	va_list ap;


	va_start( ap, fmt );
	vprintf( fmt, ap );
	va_end( ap );

	exit( EXIT_FAILURE );
}


#ifdef FT_DEBUG_LEVEL_TRACE


/*************************************************************************/
/*                                                                       */
/* <Function>                                                            */
/*    FT_SetTraceLevel                                                   */
/*                                                                       */
/* <Description>                                                         */
/*    Sets the trace level for debugging.                                */
/*                                                                       */
/* <Input>                                                               */
/*    component :: The component which should be traced.  See ftdebug.h  */
/*                 for a complete list.  If set to `trace_any', all      */
/*                 components will be traced.                            */
/*    level     :: The tracing level.                                    */
/*                                                                       */
FT_EXPORT_FUNC( void )  FT_SetTraceLevel( FT_Trace component,
										  char level )
{
	if ( component >= trace_max ) {
		return;
	}

	/* if component is `trace_any', change _all_ levels at once */
	if ( component == trace_any ) {
		int n;


		for ( n = trace_any; n < trace_max; n++ )
			ft_trace_levels[n] = level;
	} else {    /* otherwise, only change individual component */
		ft_trace_levels[component] = level;
	}
}

#endif /* FT_DEBUG_LEVEL_TRACE */

#endif /* FT_DEBUG_LEVEL_TRACE || FT_DEBUG_LEVEL_ERROR */


/* END */
