1/*-
2 * Copyright (c) 1991, 1993
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
35#if 0
36static char sccsid[] = "@(#)term.c 8.1 (Berkeley) 6/9/93";
37#endif
38static const char rcsid[] =
| 1/*-
2 * Copyright (c) 1991, 1993
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
35#if 0
36static char sccsid[] = "@(#)term.c 8.1 (Berkeley) 6/9/93";
37#endif
38static const char rcsid[] =
|
39 "$Id$";
| 39 "$Id: term.c,v 1.2 1997/08/18 07:27:56 charnier Exp $";
|
40#endif /* not lint */
41
42#include <sys/types.h>
43#include <err.h>
44#include <errno.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <unistd.h>
49#include <ttyent.h>
50#include "extern.h"
51
52char tbuf[1024]; /* Termcap entry. */
53
54char *askuser __P((char *));
55char *ttys __P((char *));
56
57/*
58 * Figure out what kind of terminal we're dealing with, and then read in
59 * its termcap entry.
60 */
61char *
62get_termcap_entry(userarg, tcapbufp)
63 char *userarg, **tcapbufp;
64{
65 struct ttyent *t;
66 int rval;
67 char *p, *ttype, *ttypath;
68
69 if (userarg) {
70 ttype = userarg;
71 goto found;
72 }
73
74 /* Try the environment. */
75 if ((ttype = getenv("TERM")))
76 goto map;
77
78 /* Try ttyname(3); check for dialup or other mapping. */
79 if ((ttypath = ttyname(STDERR_FILENO))) {
80 if ((p = rindex(ttypath, '/')))
81 ++p;
82 else
83 p = ttypath;
84 if ((t = getttynam(p))) {
85 ttype = t->ty_type;
86 goto map;
87 }
88 }
89
90 /* If still undefined, use "unknown". */
91 ttype = "unknown";
92
93map: ttype = mapped(ttype);
94
95 /*
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.
99 */
100found: if ((p = getenv("TERMCAP")) != NULL && *p != '/')
101 unsetenv("TERMCAP");
102
103 /*
104 * ttype now contains a pointer to the type of the terminal.
105 * If the first character is '?', ask the user.
106 */
| 40#endif /* not lint */
41
42#include <sys/types.h>
43#include <err.h>
44#include <errno.h>
45#include <stdio.h>
46#include <stdlib.h>
47#include <string.h>
48#include <unistd.h>
49#include <ttyent.h>
50#include "extern.h"
51
52char tbuf[1024]; /* Termcap entry. */
53
54char *askuser __P((char *));
55char *ttys __P((char *));
56
57/*
58 * Figure out what kind of terminal we're dealing with, and then read in
59 * its termcap entry.
60 */
61char *
62get_termcap_entry(userarg, tcapbufp)
63 char *userarg, **tcapbufp;
64{
65 struct ttyent *t;
66 int rval;
67 char *p, *ttype, *ttypath;
68
69 if (userarg) {
70 ttype = userarg;
71 goto found;
72 }
73
74 /* Try the environment. */
75 if ((ttype = getenv("TERM")))
76 goto map;
77
78 /* Try ttyname(3); check for dialup or other mapping. */
79 if ((ttypath = ttyname(STDERR_FILENO))) {
80 if ((p = rindex(ttypath, '/')))
81 ++p;
82 else
83 p = ttypath;
84 if ((t = getttynam(p))) {
85 ttype = t->ty_type;
86 goto map;
87 }
88 }
89
90 /* If still undefined, use "unknown". */
91 ttype = "unknown";
92
93map: ttype = mapped(ttype);
94
95 /*
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.
99 */
100found: if ((p = getenv("TERMCAP")) != NULL && *p != '/')
101 unsetenv("TERMCAP");
102
103 /*
104 * ttype now contains a pointer to the type of the terminal.
105 * If the first character is '?', ask the user.
106 */
|
107 if (ttype[0] == '?')
| 107 if (ttype[0] == '?') {
|
108 if (ttype[1] != '\0')
109 ttype = askuser(ttype + 1);
110 else
111 ttype = askuser(NULL);
| 108 if (ttype[1] != '\0')
109 ttype = askuser(ttype + 1);
110 else
111 ttype = askuser(NULL);
|
| 112 }
|
112
113 /* Find the termcap entry. If it doesn't exist, ask the user. */
114 while ((rval = tgetent(tbuf, ttype)) == 0) {
115 warnx("terminal type %s is unknown", ttype);
116 ttype = askuser(NULL);
117 }
118 if (rval == -1)
119 errx(1, "termcap: %s", strerror(errno ? errno : ENOENT));
120 *tcapbufp = tbuf;
121 return (ttype);
122}
123
124/* Prompt the user for a terminal type. */
125char *
126askuser(dflt)
127 char *dflt;
128{
129 static char answer[256];
130 char *p;
131
132 /* We can get recalled; if so, don't continue uselessly. */
133 if (feof(stdin) || ferror(stdin)) {
134 (void)fprintf(stderr, "\n");
135 exit(1);
136 }
137 for (;;) {
138 if (dflt)
139 (void)fprintf(stderr, "Terminal type? [%s] ", dflt);
140 else
141 (void)fprintf(stderr, "Terminal type? ");
142 (void)fflush(stderr);
143
144 if (fgets(answer, sizeof(answer), stdin) == NULL) {
145 if (dflt == NULL) {
146 (void)fprintf(stderr, "\n");
147 exit(1);
148 }
149 return (dflt);
150 }
151
152 if ((p = index(answer, '\n')))
153 *p = '\0';
154 if (answer[0])
155 return (answer);
156 if (dflt != NULL)
157 return (dflt);
158 }
159}
| 113
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);
118 }
119 if (rval == -1)
120 errx(1, "termcap: %s", strerror(errno ? errno : ENOENT));
121 *tcapbufp = tbuf;
122 return (ttype);
123}
124
125/* Prompt the user for a terminal type. */
126char *
127askuser(dflt)
128 char *dflt;
129{
130 static char answer[256];
131 char *p;
132
133 /* We can get recalled; if so, don't continue uselessly. */
134 if (feof(stdin) || ferror(stdin)) {
135 (void)fprintf(stderr, "\n");
136 exit(1);
137 }
138 for (;;) {
139 if (dflt)
140 (void)fprintf(stderr, "Terminal type? [%s] ", dflt);
141 else
142 (void)fprintf(stderr, "Terminal type? ");
143 (void)fflush(stderr);
144
145 if (fgets(answer, sizeof(answer), stdin) == NULL) {
146 if (dflt == NULL) {
147 (void)fprintf(stderr, "\n");
148 exit(1);
149 }
150 return (dflt);
151 }
152
153 if ((p = index(answer, '\n')))
154 *p = '\0';
155 if (answer[0])
156 return (answer);
157 if (dflt != NULL)
158 return (dflt);
159 }
160}
|