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 <string.h>
  11 #include "enums.h"
  12 #include "tmpalloc.h"
  13
  14 typedef struct sEnumInfo
  15 {
  16         GLenum value;
  17         const char *category;
  18         const char *name;
  19 } EnumInfo;
  20
  21 #include "gensrc/enums.table"
  22
  23 const char *describe_enum(GLenum value, const char *categ)
  24 {
  25         unsigned low = 0;
  26         unsigned high = enum_count;
  27         char *ptr;
  28
  29         while(high>low+1)
  30         {
  31                 unsigned mid = (low+high)/2;
  32                 int cmp;
  33
  34                 if(enums[mid].value<value)
  35                         cmp = -1;
  36                 else if(enums[mid].value>value)
  37                         cmp = 1;
  38                 else
  39                         cmp = strcmp(enums[mid].category, categ);
  40
  41                 if(cmp<0)
  42                         low = mid;
  43                 else if(cmp>0)
  44                         high = mid;
  45                 else
  46                         return enums[mid].name;
  47         }
  48
  49         if(enums[low].value==value)
  50                 return enums[low].name;
  51         if(enums[high].value==value)
  52                 return enums[high].name;
  53
  54         ptr = (char *)tmpalloc(20);
  55         snprintf(ptr, 20, "GLenum(0x%X)", value);
  56         return ptr;
  57 }
  58
  59 const char *describe_bitfield(int mask, const char *categ)
  60 {
  61         int bit;
  62         char *buf = (char *)tmpalloc(200);
  63         char *ptr = buf;
  64
  65         for(bit=1; bit; bit<<=1)
  66                 if(mask&bit)
  67                 {
  68                         const char *bdesc = describe_enum(bit, categ);
  69                         if(ptr!=buf)
  70                                 *ptr++ = '|';
  71                         while(*bdesc)
  72                                 *ptr++ = *bdesc++;
  73                 }
  74         *ptr = 0;
  75         return buf;
  76 }