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key.c revision 1.4 
      1 /*-
      2  * Copyright (c) 1991 The Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)key.c	5.3 (Berkeley) 6/10/91";
     36 static char rcsid[] = "$Header: /tank/opengrok/rsync2/NetBSD/src/bin/stty/key.c,v 1.4 1993/06/01 14:36:20 cgd Exp $";
     37 #endif /* not lint */
     38 
     39 #include <sys/types.h>
     40 #include <errno.h>
     41 #include <stdlib.h>
     42 #include <stdio.h>
     43 #include <string.h>
     44 #include "stty.h"
     45 #include "extern.h"
     46 
     47 __BEGIN_DECLS
     48 void	f_all __P((struct info *));
     49 void	f_cbreak __P((struct info *));
     50 void	f_columns __P((struct info *));
     51 void	f_dec __P((struct info *));
     52 void	f_everything __P((struct info *));
     53 void	f_extproc __P((struct info *));
     54 void	f_ispeed __P((struct info *));
     55 void	f_nl __P((struct info *));
     56 void	f_ospeed __P((struct info *));
     57 void	f_raw __P((struct info *));
     58 void	f_rows __P((struct info *));
     59 void	f_sane __P((struct info *));
     60 void	f_size __P((struct info *));
     61 void	f_speed __P((struct info *));
     62 void	f_tty __P((struct info *));
     63 __END_DECLS
     64 
     65 static struct key {
     66 	char *name;				/* name */
     67 	void (*f) __P((struct info *));		/* function */
     68 #define	F_NEEDARG	0x01			/* needs an argument */
     69 #define	F_OFFOK		0x02			/* can turn off */
     70 	int flags;
     71 } keys[] = {
     72 	"all",		f_all,		0,
     73 	"cbreak",	f_cbreak,	F_OFFOK,
     74 	"cols",		f_columns,	F_NEEDARG,
     75 	"columns",	f_columns,	F_NEEDARG,
     76 	"cooked", 	f_sane,		0,
     77 	"dec",		f_dec,		0,
     78 	"everything",	f_everything,	0,
     79 	"extproc",	f_extproc,	F_OFFOK,
     80 	"ispeed",	f_ispeed,	F_NEEDARG,
     81 	"new",		f_tty,		0,
     82 	"nl",		f_nl,		F_OFFOK,
     83 	"old",		f_tty,		0,
     84 	"ospeed",	f_ospeed,	F_NEEDARG,
     85 	"raw",		f_raw,		F_OFFOK,
     86 	"rows",		f_rows,		F_NEEDARG,
     87 	"sane",		f_sane,		0,
     88 	"size",		f_size,		0,
     89 	"speed",	f_speed,	0,
     90 	"tty",		f_tty,		0,
     91 };
     92 
     93 ksearch(argvp, ip)
     94 	char ***argvp;
     95 	struct info *ip;
     96 {
     97 	register struct key *kp;
     98 	register char *name;
     99 	struct key tmp;
    100 	static int c_key __P((const void *, const void *));
    101 
    102 	name = **argvp;
    103 	if (*name == '-') {
    104 		ip->off = 1;
    105 		++name;
    106 	} else
    107 		ip->off = 0;
    108 
    109 	tmp.name = name;
    110 	if (!(kp = (struct key *)bsearch(&tmp, keys,
    111 	    sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
    112 		return(0);
    113 	if (!(kp->flags & F_OFFOK) && ip->off)
    114 		err("illegal option -- %s\n%s", name, usage);
    115 	if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp))
    116 		err("option requires an argument -- %s\n%s", name, usage);
    117 	kp->f(ip);
    118 	return(1);
    119 }
    120 
    121 static
    122 c_key(a, b)
    123         const void *a, *b;
    124 {
    125         return(strcmp(((struct key *)a)->name, ((struct key *)b)->name));
    126 }
    127 
    128 void
    129 f_all(ip)
    130 	struct info *ip;
    131 {
    132 	print(&ip->t, &ip->win, ip->ldisc, BSD);
    133 }
    134 
    135 void
    136 f_cbreak(ip)
    137 	struct info *ip;
    138 {
    139 	if (ip->off)
    140 		f_sane(ip);
    141 	else {
    142 		ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
    143 		ip->t.c_oflag |= OPOST;
    144 		ip->t.c_lflag |= ISIG|IEXTEN;
    145 		ip->t.c_lflag &= ~ICANON;
    146 		ip->set = 1;
    147 	}
    148 }
    149 
    150 void
    151 f_columns(ip)
    152 	struct info *ip;
    153 {
    154 	ip->win.ws_col = atoi(ip->arg);
    155 	ip->wset = 1;
    156 }
    157 
    158 void
    159 f_dec(ip)
    160 	struct info *ip;
    161 {
    162 	ip->t.c_cc[VERASE] = (u_char)0177;
    163 	ip->t.c_cc[VKILL] = CTRL('u');
    164 	ip->t.c_cc[VINTR] = CTRL('c');
    165 	ip->t.c_lflag &= ~ECHOPRT;
    166 	ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
    167 	ip->t.c_iflag &= ~IXANY;
    168 	ip->set = 1;
    169 }
    170 
    171 void
    172 f_everything(ip)
    173 	struct info *ip;
    174 {
    175 	print(&ip->t, &ip->win, ip->ldisc, BSD);
    176 }
    177 
    178 void
    179 f_extproc(ip)
    180 	struct info *ip;
    181 {
    182 	int tmp;
    183 
    184 	if (ip->set) {
    185 		tmp = 1;
    186 		(void)ioctl(ip->fd, TIOCEXT, &tmp);
    187 	} else {
    188 		tmp = 0;
    189 		(void)ioctl(ip->fd, TIOCEXT, &tmp);
    190 	}
    191 }
    192 
    193 void
    194 f_ispeed(ip)
    195 	struct info *ip;
    196 {
    197 	cfsetispeed(&ip->t, atoi(ip->arg));
    198 	ip->set = 1;
    199 }
    200 
    201 void
    202 f_nl(ip)
    203 	struct info *ip;
    204 {
    205 	if (ip->off) {
    206 		ip->t.c_iflag |= ICRNL;
    207 		ip->t.c_oflag |= ONLCR;
    208 	} else {
    209 		ip->t.c_iflag &= ~ICRNL;
    210 		ip->t.c_oflag &= ~ONLCR;
    211 	}
    212 	ip->set = 1;
    213 }
    214 
    215 void
    216 f_ospeed(ip)
    217 	struct info *ip;
    218 {
    219 	cfsetospeed(&ip->t, atoi(ip->arg));
    220 	ip->set = 1;
    221 }
    222 
    223 void
    224 f_raw(ip)
    225 	struct info *ip;
    226 {
    227 	if (ip->off)
    228 		f_sane(ip);
    229 	else {
    230 		cfmakeraw(&ip->t);
    231 		ip->t.c_cflag &= ~(CSIZE|PARENB);
    232 		ip->t.c_cflag |= CS8;
    233 		ip->set = 1;
    234 	}
    235 }
    236 
    237 void
    238 f_rows(ip)
    239 	struct info *ip;
    240 {
    241 	ip->win.ws_row = atoi(ip->arg);
    242 	ip->wset = 1;
    243 }
    244 
    245 void
    246 f_sane(ip)
    247 	struct info *ip;
    248 {
    249 	ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
    250 	ip->t.c_iflag = TTYDEF_IFLAG;
    251 	ip->t.c_iflag |= ICRNL;
    252 	/* preserve user-preference flags in lflag */
    253 #define	LKEEP	(ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
    254 	ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
    255 	ip->t.c_oflag = TTYDEF_OFLAG;
    256 	ip->set = 1;
    257 }
    258 
    259 void
    260 f_size(ip)
    261 	struct info *ip;
    262 {
    263 	(void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
    264 }
    265 
    266 void
    267 f_speed(ip)
    268 	struct info *ip;
    269 {
    270 	(void)printf("%d\n", cfgetospeed(&ip->t));
    271 }
    272 
    273 void
    274 f_tty(ip)
    275 	struct info *ip;
    276 {
    277 	int tmp;
    278 
    279 	tmp = TTYDISC;
    280 	if (ioctl(0, TIOCSETD, &tmp) < 0)
    281 		err("TIOCSETD: %s", strerror(errno));
    282 }
    283