root/ext/gd/libgd/gd2topng.c

DEFINITIONS

1. main

   1 
   2 #include <stdio.h>
   3 #include "gd.h"
   4 
   5 /* A short program which converts a .png file into a .gd file, for
   6    your convenience in creating images on the fly from a
   7    basis image that must be loaded quickly. The .gd format
   8    is not intended to be a general-purpose format. */
   9 
  10 int
  11 main (int argc, char **argv)
  12 {
  13   gdImagePtr im;
  14   FILE *in, *out;
  15   if (argc != 3)
  16     {
  17       fprintf (stderr, "Usage: gd2topng filename.gd2 filename.png\n");
  18       exit (1);
  19     }
  20   in = fopen (argv[1], "rb");
  21   if (!in)
  22     {
  23       fprintf (stderr, "Input file does not exist!\n");
  24       exit (1);
  25     }
  26   im = gdImageCreateFromGd2 (in);
  27   fclose (in);
  28   if (!im)
  29     {
  30       fprintf (stderr, "Input is not in GD2 format!\n");
  31       exit (1);
  32     }
  33   out = fopen (argv[2], "wb");
  34   if (!out)
  35     {
  36       fprintf (stderr, "Output file cannot be written to!\n");
  37       gdImageDestroy (im);
  38       exit (1);
  39     }
  40 #ifdef HAVE_LIBPNG
  41   gdImagePng (im, out);
  42 #else
  43   fprintf(stderr, "No PNG library support available.\n");
  44 #endif
  45   fclose (out);
  46   gdImageDestroy (im);
  47 
  48   return 0;
  49 }