source/enums.c

   1 /* $Id$
   2
   3 This file is part of gldbg
   4 Copyright © 2009  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the GPL
   6 */
   7
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include "enums.h"
  11 #include "tmpalloc.h"
  12
  13 typedef struct sEnumInfo
  14 {
  15         GLenum value;
  16         const char *category;
  17         const char *name;
  18 } EnumInfo;
  19
  20 #include "enums.table"
  21
  22 const char *describe_enum(GLenum value, const char *categ)
  23 {
  24         unsigned low = 0;
  25         unsigned high = enum_count;
  26         char *ptr;
  27
  28         while(high>low+1)
  29         {
  30                 unsigned mid = (low+high)/2;
  31                 int cmp;
  32
  33                 if(enums[mid].value<value)
  34                         cmp = -1;
  35                 else if(enums[mid].value>value)
  36                         cmp = 1;
  37                 else
  38                         cmp = strcmp(enums[mid].category, categ);
  39
  40                 if(cmp<0)
  41                         low = mid;
  42                 else if(cmp>0)
  43                         high = mid;
  44                 else
  45                         return enums[mid].name;
  46         }
  47
  48         if(enums[low].value==value)
  49                 return enums[low].name;
  50         if(enums[high].value==value)
  51                 return enums[high].name;
  52
  53         ptr = (char *)tmpalloc(20);
  54         snprintf(ptr, 20, "GLenum(0x%X)", value);
  55         return ptr;
  56 }
  57
  58 const char *describe_bitfield(int mask, const char *categ)
  59 {
  60         int bit;
  61         char *buf = (char *)tmpalloc(200);
  62         char *ptr = buf;
  63
  64         for(bit=1; bit; bit<<=1)
  65                 if(mask&bit)
  66                 {
  67                         const char *bdesc = describe_enum(bit, categ);
  68                         if(ptr!=buf)
  69                                 *ptr++ = '|';
  70                         while(*bdesc)
  71                                 *ptr++ = *bdesc++;
  72                 }
  73         *ptr = 0;
  74         return buf;
  75 }