source/enums.c

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