sprites/xpm_sprite_converter.c

   1 #ifndef XPM_FILE
   2 #error "XPM_FILE undefined"
   3 #endif
   4
   5 #ifndef XPM_NAME
   6 #error "XPM_NAME undefined"
   7 #endif
   8
   9 #define STRINGIFY_I(x) #x
  10 #define STRINGIFY(x) STRINGIFY_I(x)
  11
  12 #include STRINGIFY(XPM_FILE)
  13
  14 #include <stdio.h>
  15 #include <stdint.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18
  19 int main(void) {
  20   int width, height, color_count, foo;
  21   char black = '\0';
  22   uint8_t *data;
  23
  24   if(4 != sscanf(XPM_NAME[0], "%d %d %d %d", &width, &height, &color_count, &foo)) {
  25     fputs("Fehler beim Parsen der Dimensionen\n", stderr);
  26     return -1;
  27   }
  28
  29   for(int i = 0; i < color_count; ++i) {
  30     size_t len = strlen((char*) XPM_NAME[i + 1]);
  31     if(len > 7 && strcmp((char*) XPM_NAME[i + 1] + len - 7, "#000000") == 0) {
  32       black = XPM_NAME[i + 1][0];
  33       break;
  34     }
  35   }
  36
  37   if(!black) {
  38     fputs("Konnte Schwarz nicht identifizieren.\n", stderr);
  39     return -1;
  40   }
  41
  42   data = calloc(width * height / 8 + 1, 1);
  43
  44   printf("{ %d, %d, (uint8_t const *) \"", width, height);
  45
  46   if(data) {
  47     int y, x;
  48     int i = 0, j;
  49
  50     for(x = 0; x < width; ++x) {
  51       for(y = 0; y < height; ++y) {
  52         data[i / 8] |= (XPM_NAME[y + 1 + color_count][x] == black) << i % 8;
  53         ++i;
  54       }
  55     }
  56
  57     for(j = 0; j < i / 8 + (i % 8 != 0); ++j) {
  58       printf("\\x%02x", data[j]);
  59     }
  60     puts("\" }");
  61   }
  62
  63   free(data);
  64 }