giftogd.cpp

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#include <stdio.h>
#include "gd.h"

/* A short program which converts a .gif file into a .gd file, for
        your convenience in creating images on the fly from a
        basis image that must be loaded quickly. The .gd format
        is not intended to be a general-purpose format. */

int main(int argc, char **argv)
{
        gdImagePtr im;
        FILE *in, *out;
        if (argc != 3) {
                fprintf(stderr, "Usage: giftogd filename.gif filename.gd\n");
                exit(1);
        }
        in = fopen(argv[1], "rb");
        if (!in) {
                fprintf(stderr, "Input file does not exist!\n");
                exit(1);
        }
        im = gdImageCreateFromGif(in);
        fclose(in);
        if (!im) {
                fprintf(stderr, "Input is not in GIF format!\n");
                exit(1);
        }
        out = fopen(argv[2], "wb");
        if (!out) {
                fprintf(stderr, "Output file cannot be written to!\n");
                gdImageDestroy(im);
                exit(1);        
        }
        gdImageGd(im, out);
        fclose(out);
        gdImageDestroy(im);
}

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