source/glprint.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 <stdlib.h>
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <ctype.h>
  12 #include "arraysize.h"
  13 #include "enums.h"
  14 #include "glprint.h"
  15 #include "tmpalloc.h"
  16
  17 typedef struct sGlPrintData
  18 {
  19         char *buffer;
  20         unsigned bufsize;
  21         int free_buf;
  22 } GlPrintData;
  23
  24 static void init_print(GlDecoder *);
  25 static void glprint_free(void *);
  26 static void print_gldError(void *, GLenum);
  27
  28 GlDecoder *glprint_new(char *buffer, unsigned bufsize)
  29 {
  30         GlDecoder *dec;
  31         GlPrintData *gpd;
  32
  33         gpd = (GlPrintData *)malloc(sizeof(GlPrintData));
  34         gpd->buffer = buffer;
  35         gpd->bufsize = bufsize;
  36         gpd->free_buf = 0;
  37         if(!gpd->buffer)
  38         {
  39                 if(!gpd->bufsize)
  40                         gpd->bufsize = 1024;
  41                 gpd->buffer = (char *)malloc(gpd->bufsize);
  42                 gpd->free_buf = 1;
  43         }
  44         dec = gldecoder_new(gpd, glprint_free);
  45
  46         init_print(dec);
  47         dec->gldError = print_gldError;
  48
  49         return dec;
  50 }
  51
  52 char *glprint_get_buffer(GlDecoder *dec)
  53 {
  54         return ((GlPrintData *)dec->user_data)->buffer;
  55 }
  56
  57 static void glprint_free(void *data)
  58 {
  59         GlPrintData *gpd = (GlPrintData *)data;
  60         if(gpd->free_buf)
  61         {
  62                 free(gpd->buffer);
  63                 free(gpd);
  64         }
  65         tmpfree();
  66 }
  67
  68 static const char *print_array(const char *fmt, const void *data, unsigned elem_size, unsigned count)
  69 {
  70         const char *cptr;
  71         char type = 0;
  72         char *buffer;
  73         unsigned buf_size;
  74         char *ptr;
  75         unsigned i;
  76
  77         for(cptr=fmt; (type<2 && *cptr); ++cptr)
  78         {
  79                 if(*cptr=='%')
  80                         type = 1;
  81                 else if(type==1 && isalpha(*cptr))
  82                         type = *cptr;
  83         }
  84
  85         count /= elem_size;
  86         buf_size = count*20;
  87         if(type=='s')
  88                 buf_size *= 50;
  89         buffer = tmpalloc(buf_size);
  90         ptr = buffer;
  91         *ptr++ = '{';
  92         for(i=0; i<count; ++i)
  93         {
  94                 long long element = 0;
  95                 unsigned len;
  96
  97                 if(i>0)
  98                 {
  99                         *ptr++ = ',';
 100                         *ptr++ = ' ';
 101                 }
 102                 memcpy(&element, (const char *)data+i*elem_size, elem_size);
 103                 if(type>='e' && type<='g' && elem_size==sizeof(float))
 104                         *(double *)&element = *(float *)&element;
 105                 len = snprintf(ptr, buf_size, fmt, element);
 106                 ptr += len;
 107                 buf_size -= len;
 108         }
 109         *ptr++ = '}';
 110         *ptr = 0;
 111
 112         return buffer;
 113 }
 114
 115 static const char *print_data(const void *data, unsigned size)
 116 {
 117         if(!data)
 118                 return "NULL";
 119         else if(!size)
 120                 return "/* data */";
 121         else
 122         {
 123                 char *buffer = tmpalloc(50);
 124                 snprintf(buffer, 50, "/* data: %d bytes */", size);
 125                 return buffer;
 126         }
 127 }
 128
 129 #include "glprint.funcs"
 130
 131 static void print_gldError(void *user_data, GLenum code)
 132 {
 133         GlPrintData *gpd = (GlPrintData *)user_data;
 134         snprintf(gpd->buffer, gpd->bufsize, "ERROR: %s", describe_enum(code, "ErrorCode"));
 135 }