root/ext/gd/libgd/gdtopng.c

DEFINITIONS

1. main

   1 #include <stdio.h>
   2 #include "gd.h"
   3 
   4 /* A short program which converts a .png file into a .gd file, for
   5    your convenience in creating images on the fly from a
   6    basis image that must be loaded quickly. The .gd format
   7    is not intended to be a general-purpose format. */
   8 
   9 int
  10 main (int argc, char **argv)
  11 {
  12   gdImagePtr im;
  13   FILE *in, *out;
  14   if (argc != 3)
  15     {
  16       fprintf (stderr, "Usage: gdtopng filename.gd filename.png\n");
  17       exit (1);
  18     }
  19   in = fopen (argv[1], "rb");
  20   if (!in)
  21     {
  22       fprintf (stderr, "Input file does not exist!\n");
  23       exit (1);
  24     }
  25   im = gdImageCreateFromGd (in);
  26   fclose (in);
  27   if (!im)
  28     {
  29       fprintf (stderr, "Input is not in GD format!\n");
  30       exit (1);
  31     }
  32   out = fopen (argv[2], "wb");
  33   if (!out)
  34     {
  35       fprintf (stderr, "Output file cannot be written to!\n");
  36       gdImageDestroy (im);
  37       exit (1);
  38     }
  39   gdImagePng (im, out);
  40   fclose (out);
  41   gdImageDestroy (im);
  42 
  43   return 0;
  44 }