[unix-history] / usr.bin / tset / tset.c

/*-
 * Copyright (c) 1980, 1991 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.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)tset.c	5.22 (Berkeley) 2/11/93";
#endif /* not lint */

#include <sys/types.h>
#include <sys/ioctl.h>
#include <termios.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "extern.h"

void	obsolete __P((char *[]));
void	report __P((char *, int, u_int));
void	usage __P((void));

struct termios mode, oldmode;

int	erasechar;		/* new erase character */
int	intrchar;		/* new interrupt character */
int	isreset;		/* invoked as reset */
int	killchar;		/* new kill character */
int	lines, columns;		/* window size */

int
main(argc, argv)
	int argc;
	char *argv[];
{
#ifdef TIOCGWINSZ
	struct winsize win;
#endif
	int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper;
	char savech, *p, *t, *tcapbuf, *ttype;

	if (tcgetattr(STDERR_FILENO, &mode) < 0)
		err("standard error: %s", strerror(errno));

	oldmode = mode;
	ospeed = cfgetospeed(&mode);

	if (p = strrchr(*argv, '/'))
		++p;
	else
		p = *argv;
	usingupper = isupper(*p);
	if (!strcasecmp(p, "reset")) {
		isreset = 1;
		reset_mode();
	}

	obsolete(argv);
	noinit = noset = quiet = Sflag = sflag = showterm = 0;
	while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != EOF) {
		switch (ch) {
		case '-':		/* display term only */
			noset = 1;
			break;
		case 'a':		/* OBSOLETE: map identifier to type */
			add_mapping("arpanet", optarg);
			break;
		case 'd':		/* OBSOLETE: map identifier to type */
			add_mapping("dialup", optarg);
			break;
		case 'e':		/* erase character */
			erasechar = optarg[0] == '^' && optarg[1] != '\0' ?
			    optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
			    optarg[0];
			break;
		case 'I':		/* no initialization strings */
			noinit = 1;
			break;
		case 'i':		/* interrupt character */
			intrchar = optarg[0] == '^' && optarg[1] != '\0' ?
			    optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
			    optarg[0];
			break;
		case 'k':		/* kill character */
			killchar = optarg[0] == '^' && optarg[1] != '\0' ?
			    optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
			    optarg[0];
			break;
		case 'm':		/* map identifier to type */
			add_mapping(NULL, optarg);
			break;
		case 'n':		/* OBSOLETE: set new tty driver */
			break;
		case 'p':		/* OBSOLETE: map identifier to type */
			add_mapping("plugboard", optarg);
			break;
		case 'Q':		/* don't output control key settings */
			quiet = 1;
			break;
		case 'S':		/* output TERM/TERMCAP strings */
			Sflag = 1;
			break;
		case 'r':		/* display term on stderr */
			showterm = 1;
			break;
		case 's':		/* output TERM/TERMCAP strings */
			sflag = 1;
			break;
		case '?':
		default:
			usage();
		}
	}
	argc -= optind;
	argv += optind;

	if (argc > 1)
		usage();

	ttype = get_termcap_entry(*argv, &tcapbuf);

	if (!noset) {
		columns = tgetnum("co");
		lines = tgetnum("li");

#ifdef TIOCGWINSZ
		/* Set window size */
		(void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win);
		if (win.ws_row == 0 && win.ws_col == 0 &&
		    lines > 0 && columns > 0) {
			win.ws_row = lines;
			win.ws_col = columns;
			(void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win);
		}
#endif
		set_control_chars();
		set_conversions(usingupper);

		if (!noinit)
			set_init();

		/* Set the modes if they've changed. */
		if (memcmp(&mode, &oldmode, sizeof(mode)))
			tcsetattr(STDERR_FILENO, TCSADRAIN, &mode);
	}

	/* Get the terminal name from the entry. */
	p = tcapbuf;
	if (p != NULL && *p != ':') {
		t = p;
		if (p = strpbrk(p, "|:")) {
			savech = *p;
			*p = '\0';
			if ((ttype = strdup(t)) == NULL)
				err("%s", strerror(errno));
			*p = savech;
		}
	}

	if (noset)
		(void)printf("%s\n", ttype);
	else {
		if (showterm)
			(void)fprintf(stderr, "Terminal type is %s.\n", ttype);
		/*
		 * If erase, kill and interrupt characters could have been
		 * modified and not -Q, display the changes.
		 */
		if (!quiet) {
			report("Erase", VERASE, CERASE);
			report("Kill", VKILL, CKILL);
			report("Interrupt", VINTR, CINTR);
		}
	}

	if (Sflag) {
		(void)printf("%s ", ttype);
		wrtermcap(tcapbuf);
	}

	if (sflag) {
		/*
		 * Figure out what shell we're using.  A hack, we look for an
		 * environmental variable SHELL ending in "csh".
		 */
		if ((p = getenv("SHELL")) &&
		    !strcmp(p + strlen(p) - 3, "csh")) {
			p = "set noglob;\nsetenv TERM %s;\nsetenv TERMCAP '";
			t = "';\nunset noglob;\n";
		} else {
			p = "TERM=%s;\nTERMCAP='";
			t = "';\nexport TERMCAP TERM;\n";
		}
		(void)printf(p, ttype);
		wrtermcap(tcapbuf);
		(void)printf(t);
	}

	exit(0);
}

/*
 * Tell the user if a control key has been changed from the default value.
 */
void
report(name, which, def)
	char *name;
	int which;
	u_int def;
{
	u_int old, new;
	char *bp, buf[1024];

	new = mode.c_cc[which];
	old = oldmode.c_cc[which];

	if (old == new && old == def)
		return;

	(void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to");

	bp = buf;
	if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0')
		(void)fprintf(stderr, "backspace.\n");
	else if (new == 0177)
		(void)fprintf(stderr, "delete.\n");
	else if (new < 040) {
		new ^= 0100;
		(void)fprintf(stderr, "control-%c (^%c).\n", new, new);
	} else
		(void)fprintf(stderr, "%c.\n", new);
}

/*
 * Convert the obsolete argument form into something that getopt can handle.
 * This means that -e, -i and -k get default arguments supplied for them.
 */
void
obsolete(argv)
	char *argv[];
{
	for (; *argv; ++argv) {
		if (argv[0][0] != '-' || argv[1] && argv[1][0] != '-' ||
		    argv[0][1] != 'e' && argv[0][1] != 'i' &&
		    argv[0][1] != 'k' || argv[0][2] != '\0')
			continue;
		switch(argv[0][1]) {
		case 'e':
			argv[0] = "-e^H";
			break;
		case 'i':
			argv[0] = "-i^C";
			break;
		case 'k':
			argv[0] = "-k^U";
			break;
		}
	}
}

void
usage()
{
	(void)fprintf(stderr,
"usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n");
	exit(1);
}
Commit	Line	Data
15637ed4 RG	1	/*-
	2	* Copyright (c) 1980, 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	char copyright[] =
	36	"@(#) Copyright (c) 1980, 1991 The Regents of the University of California.\n\
	37	All rights reserved.\n";
	38	#endif /* not lint */
	39
	40	#ifndef lint
78ed81a3	41	static char sccsid[] = "@(#)tset.c 5.22 (Berkeley) 2/11/93";
15637ed4 RG	42	#endif /* not lint */
	43
	44	#include <sys/types.h>
78ed81a3	45	#include <sys/ioctl.h>
15637ed4 RG	46	#include <termios.h>
	47	#include <errno.h>
	48	#include <unistd.h>
	49	#include <stdlib.h>
	50	#include <stdio.h>
	51	#include <ctype.h>
	52	#include <string.h>
	53	#include "extern.h"
	54
	55	void obsolete __P((char *[]));
	56	void report __P((char *, int, u_int));
	57	void usage __P((void));
	58
	59	struct termios mode, oldmode;
	60
15637ed4 RG	61	int erasechar; /* new erase character */
	62	int intrchar; /* new interrupt character */
	63	int isreset; /* invoked as reset */
	64	int killchar; /* new kill character */
15637ed4 RG	65	int lines, columns; /* window size */
	66
	67	int
	68	main(argc, argv)
	69	int argc;
	70	char *argv[];
	71	{
	72	#ifdef TIOCGWINSZ
	73	struct winsize win;
	74	#endif
78ed81a3	75	int ch, noinit, noset, quiet, Sflag, sflag, showterm, usingupper;
15637ed4 RG	76	char savech, p, t, tcapbuf, ttype;
	77
	78	if (tcgetattr(STDERR_FILENO, &mode) < 0)
	79	err("standard error: %s", strerror(errno));
	80
	81	oldmode = mode;
	82	ospeed = cfgetospeed(&mode);
	83
	84	if (p = strrchr(*argv, '/'))
	85	++p;
	86	else
	87	p = *argv;
	88	usingupper = isupper(*p);
	89	if (!strcasecmp(p, "reset")) {
	90	isreset = 1;
	91	reset_mode();
	92	}
	93
	94	obsolete(argv);
78ed81a3	95	noinit = noset = quiet = Sflag = sflag = showterm = 0;
78ed81a3	96	while ((ch = getopt(argc, argv, "-a:d:e:Ii:k:m:np:QSrs")) != EOF) {
15637ed4	97	switch (ch) {
78ed81a3	98	case '-': /* display term only */
15637ed4 RG	99	noset = 1;
	100	break;
	101	case 'a': /* OBSOLETE: map identifier to type */
	102	add_mapping("arpanet", optarg);
	103	break;
	104	case 'd': /* OBSOLETE: map identifier to type */
	105	add_mapping("dialup", optarg);
	106	break;
	107	case 'e': /* erase character */
	108	erasechar = optarg[0] == '^' && optarg[1] != '\0' ?
	109	optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
	110	optarg[0];
	111	break;
78ed81a3	112	case 'I': /* no initialization strings */
15637ed4 RG	113	noinit = 1;
	114	break;
	115	case 'i': /* interrupt character */
	116	intrchar = optarg[0] == '^' && optarg[1] != '\0' ?
	117	optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
	118	optarg[0];
	119	break;
	120	case 'k': /* kill character */
	121	killchar = optarg[0] == '^' && optarg[1] != '\0' ?
	122	optarg[1] == '?' ? '\177' : CTRL(optarg[1]) :
	123	optarg[0];
	124	break;
	125	case 'm': /* map identifier to type */
	126	add_mapping(NULL, optarg);
	127	break;
	128	case 'n': /* OBSOLETE: set new tty driver */
	129	break;
	130	case 'p': /* OBSOLETE: map identifier to type */
	131	add_mapping("plugboard", optarg);
	132	break;
78ed81a3	133	case 'Q': /* don't output control key settings */
15637ed4 RG	134	quiet = 1;
15637ed4 RG	135	break;
78ed81a3	136	case 'S': /* output TERM/TERMCAP strings */
	137	Sflag = 1;
	138	break;
15637ed4 RG	139	case 'r': /* display term on stderr */
	140	showterm = 1;
	141	break;
78ed81a3	142	case 's': /* output TERM/TERMCAP strings */
78ed81a3	143	sflag = 1;
15637ed4 RG	144	break;
	145	case '?':
	146	default:
	147	usage();
	148	}
	149	}
	150	argc -= optind;
	151	argv += optind;
	152
	153	if (argc > 1)
	154	usage();
	155
	156	ttype = get_termcap_entry(*argv, &tcapbuf);
	157
	158	if (!noset) {
	159	columns = tgetnum("co");
	160	lines = tgetnum("li");
	161
	162	#ifdef TIOCGWINSZ
	163	/* Set window size */
	164	(void)ioctl(STDERR_FILENO, TIOCGWINSZ, &win);
	165	if (win.ws_row == 0 && win.ws_col == 0 &&
	166	lines > 0 && columns > 0) {
	167	win.ws_row = lines;
	168	win.ws_col = columns;
	169	(void)ioctl(STDERR_FILENO, TIOCSWINSZ, &win);
	170	}
	171	#endif
	172	set_control_chars();
	173	set_conversions(usingupper);
	174
	175	if (!noinit)
	176	set_init();
	177
	178	/* Set the modes if they've changed. */
	179	if (memcmp(&mode, &oldmode, sizeof(mode)))
	180	tcsetattr(STDERR_FILENO, TCSADRAIN, &mode);
	181	}
	182
78ed81a3	183	/* Get the terminal name from the entry. */
	184	p = tcapbuf;
	185	if (p != NULL && *p != ':') {
	186	t = p;
15637ed4 RG	187	if (p = strpbrk(p, "\|:")) {
	188	savech = *p;
	189	*p = '\0';
	190	if ((ttype = strdup(t)) == NULL)
	191	err("%s", strerror(errno));
	192	*p = savech;
	193	}
	194	}
	195
	196	if (noset)
	197	(void)printf("%s\n", ttype);
	198	else {
	199	if (showterm)
	200	(void)fprintf(stderr, "Terminal type is %s.\n", ttype);
	201	/*
	202	* If erase, kill and interrupt characters could have been
	203	* modified and not -Q, display the changes.
	204	*/
	205	if (!quiet) {
	206	report("Erase", VERASE, CERASE);
	207	report("Kill", VKILL, CKILL);
	208	report("Interrupt", VINTR, CINTR);
	209	}
	210	}
	211
78ed81a3	212	if (Sflag) {
	213	(void)printf("%s ", ttype);
	214	wrtermcap(tcapbuf);
	215	}
	216
	217	if (sflag) {
	218	/*
	219	* Figure out what shell we're using. A hack, we look for an
	220	* environmental variable SHELL ending in "csh".
	221	*/
	222	if ((p = getenv("SHELL")) &&
	223	!strcmp(p + strlen(p) - 3, "csh")) {
	224	p = "set noglob;\nsetenv TERM %s;\nsetenv TERMCAP '";
	225	t = "';\nunset noglob;\n";
	226	} else {
	227	p = "TERM=%s;\nTERMCAP='";
	228	t = "';\nexport TERMCAP TERM;\n";
	229	}
	230	(void)printf(p, ttype);
	231	wrtermcap(tcapbuf);
	232	(void)printf(t);
	233	}
15637ed4	234
15637ed4 RG	235	exit(0);
	236	}
	237
	238	/*
	239	* Tell the user if a control key has been changed from the default value.
	240	*/
	241	void
	242	report(name, which, def)
	243	char *name;
	244	int which;
	245	u_int def;
	246	{
	247	u_int old, new;
	248	char *bp, buf[1024];
	249
	250	new = mode.c_cc[which];
	251	old = oldmode.c_cc[which];
	252
	253	if (old == new && old == def)
	254	return;
	255
	256	(void)fprintf(stderr, "%s %s ", name, old == new ? "is" : "set to");
	257
	258	bp = buf;
	259	if (tgetstr("kb", &bp) && new == buf[0] && buf[1] == '\0')
	260	(void)fprintf(stderr, "backspace.\n");
	261	else if (new == 0177)
	262	(void)fprintf(stderr, "delete.\n");
	263	else if (new < 040) {
	264	new ^= 0100;
	265	(void)fprintf(stderr, "control-%c (^%c).\n", new, new);
	266	} else
	267	(void)fprintf(stderr, "%c.\n", new);
	268	}
	269
	270	/*
	271	* Convert the obsolete argument form into something that getopt can handle.
	272	* This means that -e, -i and -k get default arguments supplied for them.
	273	*/
	274	void
	275	obsolete(argv)
	276	char *argv[];
	277	{
	278	for (; *argv; ++argv) {
	279	if (argv[0][0] != '-' \|\| argv[1] && argv[1][0] != '-' \|\|
	280	argv[0][1] != 'e' && argv[0][1] != 'i' &&
	281	argv[0][1] != 'k' \|\| argv[0][2] != '\0')
	282	continue;
	283	switch(argv[0][1]) {
	284	case 'e':
	285	argv[0] = "-e^H";
	286	break;
	287	case 'i':
	288	argv[0] = "-i^C";
	289	break;
	290	case 'k':
	291	argv[0] = "-k^U";
	292	break;
	293	}
	294	}
	295	}
	296
	297	void
	298	usage()
299	{
300	(void)fprintf(stderr,
78ed81a3	301	"usage: tset [-IQrSs] [-] [-e ch] [-i ch] [-k ch] [-m mapping] [terminal]\n");
15637ed4 RG	302	exit(1);
15637ed4 RG	303	}