replaced PNULL def with NULL

[unix-history] / usr / src / bin / stty / key.c

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 */

#ifndef lint
static char sccsid[] = "@(#)key.c	5.2 (Berkeley) %G%";
#endif /* not lint */

#include <sys/types.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "stty.h"
#include "extern.h"

__BEGIN_DECLS
void	f_all __P((struct info *));
void	f_cbreak __P((struct info *));
void	f_columns __P((struct info *));
void	f_dec __P((struct info *));
void	f_everything __P((struct info *));
void	f_extproc __P((struct info *));
void	f_ispeed __P((struct info *));
void	f_nl __P((struct info *));
void	f_ospeed __P((struct info *));
void	f_raw __P((struct info *));
void	f_rows __P((struct info *));
void	f_sane __P((struct info *));
void	f_size __P((struct info *));
void	f_speed __P((struct info *));
void	f_tty __P((struct info *));
__END_DECLS

static struct key keys[] = {
	"all",		f_all,		0,
	"cbreak",	f_cbreak,	F_OFFOK,
	"cols",		f_columns,	F_NEEDARG,
	"columns",	f_columns,	F_NEEDARG,
	"cooked", 	f_sane,		0,
	"dec",		f_dec,		0,
	"everything",	f_everything,	0,
	"extproc",	f_extproc,	F_OFFOK,
	"ispeed",	f_ispeed,	0,
	"new",		f_tty,		0,
	"nl",		f_nl,		F_OFFOK,
	"old",		f_tty,		0,
	"ospeed",	f_ospeed,	F_NEEDARG,
	"raw",		f_raw,		F_OFFOK,
	"rows",		f_rows,		F_NEEDARG,
	"sane",		f_sane,		0,
	"size",		f_size,		0,
	"speed",	f_speed,	0,
	"tty",		f_tty,		0,
};

ksearch(argvp, ip)
	char ***argvp;
	struct info *ip;
{
	register struct key *kp;
	register char *name;
	struct key tmp;
	static int c_key __P((const void *, const void *));

	name = **argvp;
	if (*name == '-') {
		ip->off = 1;
		++name;
	} else
		ip->off = 0;

	tmp.name = name;
	if (!(kp = (struct key *)bsearch(&tmp, keys,
	    sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
		return(0);
	if (!(kp->flags & F_OFFOK) && ip->off)
		err("illegal option -- %s\n%s", name, usage);
	if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp))
		err("option requires an argument -- %s\n%s", name, usage);
	kp->f(ip);
	return(1);
}

static
c_key(a, b)
        const void *a, *b;
{
        return(strcmp(((struct key *)a)->name, ((struct key *)b)->name));
}

void
f_all(ip)
	struct info *ip;
{
	print(&ip->t, &ip->win, ip->ldisc, BSD);
}

void
f_cbreak(ip)
	struct info *ip;
{
	if (ip->off)
		f_sane(ip);
	else {
		ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
		ip->t.c_oflag |= OPOST;
		ip->t.c_lflag |= ISIG|IEXTEN;
		ip->t.c_lflag &= ~ICANON;
		ip->set = 1;
	}
}

void
f_columns(ip)
	struct info *ip;
{
	ip->win.ws_col = atoi(ip->arg);
	ip->wset = 1;
}

void
f_dec(ip)
	struct info *ip;
{
	ip->t.c_cc[VERASE] = (u_char)0177;
	ip->t.c_cc[VKILL] = CTRL('u');
	ip->t.c_cc[VINTR] = CTRL('c');
	ip->t.c_lflag &= ~ECHOPRT;
	ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
	ip->t.c_iflag &= ~IXANY;
	ip->set = 1;
}

void
f_everything(ip)
	struct info *ip;
{
	print(&ip->t, &ip->win, ip->ldisc, BSD);
}

void
f_extproc(ip)
	struct info *ip;
{
	int tmp;

	if (ip->set) {
		tmp = 1;
		(void)ioctl(ip->fd, TIOCEXT, &tmp);
	} else {
		tmp = 0;
		(void)ioctl(ip->fd, TIOCEXT, &tmp);
	}
}

void
f_ispeed(ip)
	struct info *ip;
{
	cfsetispeed(&ip->t, atoi(ip->arg));
	ip->set = 1;
}

void
f_nl(ip)
	struct info *ip;
{
	if (ip->off) {
		ip->t.c_iflag |= ICRNL;
		ip->t.c_oflag |= ONLCR;
	} else {
		ip->t.c_iflag &= ~ICRNL;
		ip->t.c_oflag &= ~ONLCR;
	}
	ip->set = 1;
}

void
f_ospeed(ip)
	struct info *ip;
{
	cfsetospeed(&ip->t, atoi(ip->arg));
	ip->set = 1;
}

void
f_raw(ip)
	struct info *ip;
{
	if (ip->off)
		f_sane(ip);
	else {
		cfmakeraw(&ip->t);
		ip->t.c_cflag &= ~(CSIZE|PARENB);
		ip->t.c_cflag |= CS8;
		ip->set = 1;
	}
}

void
f_rows(ip)
	struct info *ip;
{
	ip->win.ws_row = atoi(ip->arg);
	ip->wset = 1;
}

void
f_sane(ip)
	struct info *ip;
{
	ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
	ip->t.c_iflag = TTYDEF_IFLAG;
	ip->t.c_iflag |= ICRNL;
	/* preserve user-preference flags in lflag */
#define	LKEEP	(ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
	ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
	ip->t.c_oflag = TTYDEF_OFLAG;
	ip->set = 1;
}

void
f_size(ip)
	struct info *ip;
{
	(void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
}

void
f_speed(ip)
	struct info *ip;
{
	(void)printf("%d\n", cfgetospeed(&ip->t));
}

void
f_tty(ip)
	struct info *ip;
{
	int tmp;

	tmp = TTYDISC;
	if (ioctl(0, TIOCSETD, &tmp) < 0)
		err("TIOCSETD: %s", strerror(errno));
}