libraries/freetype-2.0.5/ftdebug.c

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  ftdebug.c                                                              */
   4 /*                                                                         */
   5 /*    Debugging and logging component (body).                              */
   6 /*                                                                         */
   7 /*  Copyright 1996-2001 by                                                 */
   8 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
   9 /*                                                                         */
  10 /*  This file is part of the FreeType project, and may only be used,       */
  11 /*  modified, and distributed under the terms of the FreeType project      */
  12 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  13 /*  this file you indicate that you have read the license and              */
  14 /*  understand and accept it fully.                                        */
  15 /*                                                                         */
  16 /***************************************************************************/
  17
  18
  19   /*************************************************************************/
  20   /*                                                                       */
  21   /* This component contains various macros and functions used to ease the */
  22   /* debugging of the FreeType engine.  Its main purpose is in assertion   */
  23   /* checking, tracing, and error detection.                               */
  24   /*                                                                       */
  25   /* There are now three debugging modes:                                  */
  26   /*                                                                       */
  27   /* - trace mode                                                          */
  28   /*                                                                       */
  29   /*   Error and trace messages are sent to the log file (which can be the */
  30   /*   standard error output).                                             */
  31   /*                                                                       */
  32   /* - error mode                                                          */
  33   /*                                                                       */
  34   /*   Only error messages are generated.                                  */
  35   /*                                                                       */
  36   /* - release mode:                                                       */
  37   /*                                                                       */
  38   /*   No error message is sent or generated.  The code is free from any   */
  39   /*   debugging parts.                                                    */
  40   /*                                                                       */
  41   /*************************************************************************/
  42
  43
  44 #include <ft2build.h>
  45 #include FT_INTERNAL_DEBUG_H
  46
  47
  48 #ifdef FT_DEBUG_LEVEL_TRACE
  49   char  ft_trace_levels[trace_max];
  50 #endif
  51
  52
  53 #if defined( FT_DEBUG_LEVEL_ERROR ) || defined( FT_DEBUG_LEVEL_TRACE )
  54
  55
  56 #include <stdarg.h>
  57 #include <stdlib.h>
  58 #include <string.h>
  59
  60
  61   FT_EXPORT_DEF( void )
  62   FT_Message( const char*  fmt, ... )
  63   {
  64     va_list  ap;
  65
  66
  67     va_start( ap, fmt );
  68     vprintf( fmt, ap );
  69     va_end( ap );
  70   }
  71
  72
  73   FT_EXPORT_DEF( void )
  74   FT_Panic( const char*  fmt, ... )
  75   {
  76     va_list  ap;
  77
  78
  79     va_start( ap, fmt );
  80     vprintf( fmt, ap );
  81     va_end( ap );
  82
  83     exit( EXIT_FAILURE );
  84   }
  85
  86
  87 #ifdef FT_DEBUG_LEVEL_TRACE
  88
  89   FT_EXPORT_DEF( void )
  90   FT_SetTraceLevel( FT_Trace  component,
  91                     char      level )
  92   {
  93     if ( component >= trace_max )
  94       return;
  95
  96     /* if component is `trace_any', change _all_ levels at once */
  97     if ( component == trace_any )
  98     {
  99       int  n;
 100
 101
 102       for ( n = trace_any; n < trace_max; n++ )
 103         ft_trace_levels[n] = level;
 104     }
 105     else        /* otherwise, only change individual component */
 106       ft_trace_levels[component] = level;
 107   }
 108
 109 #endif /* FT_DEBUG_LEVEL_TRACE */
 110
 111 #endif /* FT_DEBUG_LEVEL_TRACE || FT_DEBUG_LEVEL_ERROR */
 112
 113
 114   /* ANSI C doesn't allow empty files, so we insert a dummy symbol */
 115   extern const int  ft_debug_dummy;
 116
 117
 118 /* END */