text: /*-
   * Copyright (c) 1989, 1991, 1993, 1994
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. All advertising materials mentioning features or use of this software
   *    must display the following acknowledgement:
   *	This product includes software developed by the University of
   *	California, Berkeley and its contributors.
   * 4. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   * @(#) Copyright (c) 1989, 1991, 1993, 1994 The Regents of the University of California.  All rights reserved.
   * @(#)stty.c	8.3 (Berkeley) 4/2/94
   * $FreeBSD: src/bin/stty/stty.c,v 1.13.2.2 2001/07/04 22:40:00 kris Exp $
   * $DragonFly: src/bin/stty/stty.c,v 1.5 2004/11/07 20:54:52 eirikn Exp $
   */
  
  #include <sys/types.h>
  
  #include <ctype.h>
  #include <err.h>
  #include <errno.h>
  #include <fcntl.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  
  #include "stty.h"
  #include "extern.h"
  
  int main (int, char *[]);
  
  int
  main(int argc, char **argv)
  {
  	struct info i;
  	enum FMT fmt;
  	int ch;
  
  	fmt = NOTSET;
  	i.fd = STDIN_FILENO;
  
  	opterr = 0;
  	while (optind < argc &&
  	    strspn(argv[optind], "-aefg") == strlen(argv[optind]) &&
  	    (ch = getopt(argc, argv, "aef:g")) != -1)
  		switch(ch) {
  		case 'a':		/* undocumented: POSIX compatibility */
  			fmt = POSIX;
  			break;
  		case 'e':
  			fmt = BSD;
  			break;
  		case 'f':
  			if ((i.fd = open(optarg, O_RDONLY | O_NONBLOCK)) < 0)
  				err(1, "%s", optarg);
  			break;
  		case 'g':
  			fmt = GFLAG;
  			break;
  		case '?':
  		default:
  			goto args;
  		}
  
  args:	argc -= optind;
  	argv += optind;
  
  	if (tcgetattr(i.fd, &i.t) < 0)
  		errx(1, "stdin isn't a terminal");
  	if (ioctl(i.fd, TIOCGETD, &i.ldisc) < 0)
  		err(1, "TIOCGETD");
  	if (ioctl(i.fd, TIOCGWINSZ, &i.win) < 0)
  		warn("TIOCGWINSZ");
  
  	checkredirect();			/* conversion aid */
  
  	switch(fmt) {
  	case NOTSET:
  		if (*argv)
  			break;
  		/* FALLTHROUGH */
  	case BSD:
  	case POSIX:
  		print(&i.t, &i.win, i.ldisc, fmt);
  		break;
  	case GFLAG:
  		gprint(&i.t, &i.win, i.ldisc);
  		break;
  	}
  
  	for (i.set = i.wset = 0; *argv; ++argv) {
  		if (ksearch(&argv, &i))
  			continue;
  
  		if (csearch(&argv, &i))
  			continue;
  
  		if (msearch(&argv, &i))
  			continue;
  
  		if (isdigit(**argv)) {
  			speed_t speed;
  
  			speed = atoi(*argv);
  			cfsetospeed(&i.t, speed);
  			cfsetispeed(&i.t, speed);
  			i.set = 1;
  			continue;
  		}
  
  		if (!strncmp(*argv, "gfmt1", sizeof("gfmt1") - 1)) {
  			gread(&i.t, *argv + sizeof("gfmt1") - 1);
  			i.set = 1;
  			continue;
  		}
  
  		warnx("illegal option -- %s", *argv);
  		usage();
  	}
  
  	if (i.set && tcsetattr(i.fd, 0, &i.t) < 0)
  		err(1, "tcsetattr");
  	if (i.wset && ioctl(i.fd, TIOCSWINSZ, &i.win) < 0)
  		warn("TIOCSWINSZ");
  	exit(0);
  }
  
  void
  usage(void)
  {
  
  	fprintf(stderr, "usage: stty [-a|-e|-g] [-f file] [options]\n");
  	exit (1);
  }
  