key.c revision 1556 
1/*-
2 * Copyright (c) 1991, 1993, 1994
3 *	The Regents of the University of California.  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
35static char sccsid[] = "@(#)key.c	8.3 (Berkeley) 4/2/94";
36#endif /* not lint */
37
38#include <sys/types.h>
39
40#include <err.h>
41#include <errno.h>
42#include <stdlib.h>
43#include <stdio.h>
44#include <string.h>
45
46#include "stty.h"
47#include "extern.h"
48
49__BEGIN_DECLS
50void	f_all __P((struct info *));
51void	f_cbreak __P((struct info *));
52void	f_columns __P((struct info *));
53void	f_dec __P((struct info *));
54void	f_everything __P((struct info *));
55void	f_extproc __P((struct info *));
56void	f_ispeed __P((struct info *));
57void	f_nl __P((struct info *));
58void	f_ospeed __P((struct info *));
59void	f_raw __P((struct info *));
60void	f_rows __P((struct info *));
61void	f_sane __P((struct info *));
62void	f_size __P((struct info *));
63void	f_speed __P((struct info *));
64void	f_tty __P((struct info *));
65__END_DECLS
66
67static struct key {
68	char *name;				/* name */
69	void (*f) __P((struct info *));		/* function */
70#define	F_NEEDARG	0x01			/* needs an argument */
71#define	F_OFFOK		0x02			/* can turn off */
72	int flags;
73} keys[] = {
74	{ "all",	f_all,		0 },
75	{ "cbreak",	f_cbreak,	F_OFFOK },
76	{ "cols",	f_columns,	F_NEEDARG },
77	{ "columns",	f_columns,	F_NEEDARG },
78	{ "cooked", 	f_sane,		0 },
79	{ "dec",	f_dec,		0 },
80	{ "everything",	f_everything,	0 },
81	{ "extproc",	f_extproc,	F_OFFOK },
82	{ "ispeed",	f_ispeed,	F_NEEDARG },
83	{ "new",	f_tty,		0 },
84	{ "nl",		f_nl,		F_OFFOK },
85	{ "old",	f_tty,		0 },
86	{ "ospeed",	f_ospeed,	F_NEEDARG },
87	{ "raw",	f_raw,		F_OFFOK },
88	{ "rows",	f_rows,		F_NEEDARG },
89	{ "sane",	f_sane,		0 },
90	{ "size",	f_size,		0 },
91	{ "speed",	f_speed,	0 },
92	{ "tty",	f_tty,		0 },
93};
94
95static int
96c_key(a, b)
97        const void *a, *b;
98{
99
100        return (strcmp(((struct key *)a)->name, ((struct key *)b)->name));
101}
102
103int
104ksearch(argvp, ip)
105	char ***argvp;
106	struct info *ip;
107{
108	char *name;
109	struct key *kp, tmp;
110
111	name = **argvp;
112	if (*name == '-') {
113		ip->off = 1;
114		++name;
115	} else
116		ip->off = 0;
117
118	tmp.name = name;
119	if (!(kp = (struct key *)bsearch(&tmp, keys,
120	    sizeof(keys)/sizeof(struct key), sizeof(struct key), c_key)))
121		return (0);
122	if (!(kp->flags & F_OFFOK) && ip->off) {
123		errx(1, "illegal option -- %s", name);
124		usage();
125	}
126	if (kp->flags & F_NEEDARG && !(ip->arg = *++*argvp)) {
127		errx(1, "option requires an argument -- %s", name);
128		usage();
129	}
130	kp->f(ip);
131	return (1);
132}
133
134void
135f_all(ip)
136	struct info *ip;
137{
138	print(&ip->t, &ip->win, ip->ldisc, BSD);
139}
140
141void
142f_cbreak(ip)
143	struct info *ip;
144{
145
146	if (ip->off)
147		f_sane(ip);
148	else {
149		ip->t.c_iflag |= BRKINT|IXON|IMAXBEL;
150		ip->t.c_oflag |= OPOST;
151		ip->t.c_lflag |= ISIG|IEXTEN;
152		ip->t.c_lflag &= ~ICANON;
153		ip->set = 1;
154	}
155}
156
157void
158f_columns(ip)
159	struct info *ip;
160{
161
162	ip->win.ws_col = atoi(ip->arg);
163	ip->wset = 1;
164}
165
166void
167f_dec(ip)
168	struct info *ip;
169{
170
171	ip->t.c_cc[VERASE] = (u_char)0177;
172	ip->t.c_cc[VKILL] = CTRL('u');
173	ip->t.c_cc[VINTR] = CTRL('c');
174	ip->t.c_lflag &= ~ECHOPRT;
175	ip->t.c_lflag |= ECHOE|ECHOKE|ECHOCTL;
176	ip->t.c_iflag &= ~IXANY;
177	ip->set = 1;
178}
179
180void
181f_everything(ip)
182	struct info *ip;
183{
184
185	print(&ip->t, &ip->win, ip->ldisc, BSD);
186}
187
188void
189f_extproc(ip)
190	struct info *ip;
191{
192
193	if (ip->set) {
194		int tmp = 1;
195		(void)ioctl(ip->fd, TIOCEXT, &tmp);
196	} else {
197		int tmp = 0;
198		(void)ioctl(ip->fd, TIOCEXT, &tmp);
199	}
200}
201
202void
203f_ispeed(ip)
204	struct info *ip;
205{
206
207	cfsetispeed(&ip->t, atoi(ip->arg));
208	ip->set = 1;
209}
210
211void
212f_nl(ip)
213	struct info *ip;
214{
215
216	if (ip->off) {
217		ip->t.c_iflag |= ICRNL;
218		ip->t.c_oflag |= ONLCR;
219	} else {
220		ip->t.c_iflag &= ~ICRNL;
221		ip->t.c_oflag &= ~ONLCR;
222	}
223	ip->set = 1;
224}
225
226void
227f_ospeed(ip)
228	struct info *ip;
229{
230
231	cfsetospeed(&ip->t, atoi(ip->arg));
232	ip->set = 1;
233}
234
235void
236f_raw(ip)
237	struct info *ip;
238{
239
240	if (ip->off)
241		f_sane(ip);
242	else {
243		cfmakeraw(&ip->t);
244		ip->t.c_cflag &= ~(CSIZE|PARENB);
245		ip->t.c_cflag |= CS8;
246		ip->set = 1;
247	}
248}
249
250void
251f_rows(ip)
252	struct info *ip;
253{
254
255	ip->win.ws_row = atoi(ip->arg);
256	ip->wset = 1;
257}
258
259void
260f_sane(ip)
261	struct info *ip;
262{
263
264	ip->t.c_cflag = TTYDEF_CFLAG | (ip->t.c_cflag & CLOCAL);
265	ip->t.c_iflag = TTYDEF_IFLAG;
266	ip->t.c_iflag |= ICRNL;
267	/* preserve user-preference flags in lflag */
268#define	LKEEP	(ECHOKE|ECHOE|ECHOK|ECHOPRT|ECHOCTL|ALTWERASE|TOSTOP|NOFLSH)
269	ip->t.c_lflag = TTYDEF_LFLAG | (ip->t.c_lflag & LKEEP);
270	ip->t.c_oflag = TTYDEF_OFLAG;
271	ip->set = 1;
272}
273
274void
275f_size(ip)
276	struct info *ip;
277{
278
279	(void)printf("%d %d\n", ip->win.ws_row, ip->win.ws_col);
280}
281
282void
283f_speed(ip)
284	struct info *ip;
285{
286
287	(void)printf("%d\n", cfgetospeed(&ip->t));
288}
289
290void
291f_tty(ip)
292	struct info *ip;
293{
294	int tmp;
295
296	tmp = TTYDISC;
297	if (ioctl(0, TIOCSETD, &tmp) < 0)
298		err(1, "TIOCSETD");
299}
300