/*
 * framebuffer tool, inspired from fbi ((c) 1998,99 Gerd Knorr <kraxel@goldbach.in-berlin.de>)
 *
 * (c) 2002 Florent Villard (warly@mandrakesoft.com)
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <getopt.h>
#include <sys/ioctl.h>
#include <linux/fb.h>

int fd;
static int fb;
struct fb_var_screeninfo   fb_var;

struct option fbresol_options[] = {
    {"version",    no_argument,       NULL, 'v'},  /* version */
    {"help",       no_argument,       NULL, 'h'},  /* help */
    {0,0,0,0}
};

void
version(void)
{
    fprintf(stderr, "fbresolution version " VERSION
	    " (c) 2002 Florent Villard <warly@mandrakesoft.com>; compiled on %s.\n", __DATE__ );
}

void
usage(char *name)
{
    char *h;
    h = strrchr(name, '/');
    fprintf(stderr,
	    "\n"
	    "This program output the current framebuffer resolution.\n"
	    "\n"
	    "  Usage: %s [ options ]\n"
	    "\n"
	    "    --help       [-h]      Print this text\n"
	    "    --version    [-v]      Show the %s version number\n"
	    "\n"
	    "\n"
	    ,h ? h + 1 : name, h ? h + 1 : name);
}

int
main(int argc, char *argv[])
{
    int opt_index = 0;
    int c;
    for (;;) {
	c = getopt_long(argc, argv, "vhnd:t:", fbresol_options, &opt_index);
	if (c == -1)
	    break;
	switch (c) {
	case 'v':
	    version();
	    exit(1);
	    break;
	default:
	case 'h':
	    usage(argv[0]);
	    exit(1);
	}
    }
    if (optind > argc) {
	usage(argv[0]);
	exit(1);
    }
    if (-1 == (fb = open("/dev/fb0",O_RDWR /* O_WRONLY */))) {
	fprintf(stderr,"open /dev/fb0: %s\n",strerror(errno));
	exit(1);
    }
    if (-1 == ioctl(fb,FBIOGET_VSCREENINFO,&fb_var)) {
	perror("ioctl FBIOGET_VSCREENINFO");
	exit(1);
    }
    printf("%dx%d\n",fb_var.xres,fb_var.yres);
    return 0;
}