2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
36 static char sccsid[] = "@(#)term.c 8.1 (Berkeley) 6/9/93";
38 static const char rcsid[] =
42 #include <sys/types.h>
52 char tbuf[1024]; /* Termcap entry. */
54 char *askuser __P((char *));
55 char *ttys __P((char *));
58 * Figure out what kind of terminal we're dealing with, and then read in
62 get_termcap_entry(userarg, tcapbufp)
63 char *userarg, **tcapbufp;
67 char *p, *ttype, *ttypath;
74 /* Try the environment. */
75 if ((ttype = getenv("TERM")))
78 /* Try ttyname(3); check for dialup or other mapping. */
79 if ((ttypath = ttyname(STDERR_FILENO))) {
80 if ((p = rindex(ttypath, '/')))
84 if ((t = getttynam(p))) {
90 /* If still undefined, use "unknown". */
93 map: ttype = mapped(ttype);
96 * If not a path, remove TERMCAP from the environment so we get a
97 * real entry from /etc/termcap. This prevents us from being fooled
98 * by out of date stuff in the environment.
100 found: if ((p = getenv("TERMCAP")) != NULL && *p != '/')
104 * ttype now contains a pointer to the type of the terminal.
105 * If the first character is '?', ask the user.
107 if (ttype[0] == '?') {
108 if (ttype[1] != '\0')
109 ttype = askuser(ttype + 1);
111 ttype = askuser(NULL);
114 /* Find the termcap entry. If it doesn't exist, ask the user. */
115 while ((rval = tgetent(tbuf, ttype)) == 0) {
116 warnx("terminal type %s is unknown", ttype);
117 ttype = askuser(NULL);
120 errx(1, "termcap: %s", strerror(errno ? errno : ENOENT));
125 /* Prompt the user for a terminal type. */
130 static char answer[256];
133 /* We can get recalled; if so, don't continue uselessly. */
134 if (feof(stdin) || ferror(stdin)) {
135 (void)fprintf(stderr, "\n");
140 (void)fprintf(stderr, "Terminal type? [%s] ", dflt);
142 (void)fprintf(stderr, "Terminal type? ");
143 (void)fflush(stderr);
145 if (fgets(answer, sizeof(answer), stdin) == NULL) {
147 (void)fprintf(stderr, "\n");
153 if ((p = index(answer, '\n')))