1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33
34 __FBSDID("$FreeBSD: stable/12/usr.bin/tset/wrterm.c 326025 2017-11-20 19:49:47Z pfg $");
35
36 #ifndef lint
37 static const char sccsid[] = "@(#)wrterm.c 8.1 (Berkeley) 6/9/93";
38 #endif
39
40 #include <sys/types.h>
41
42 #include <ctype.h>
43 #include <err.h>
44 #include <stdio.h>
45 #include <string.h>
46
47 #include "extern.h"
48
49 /*
50 * Output termcap entry to stdout, quoting characters that would give the
51 * shell problems and omitting empty fields.
52 */
53 void
wrtermcap(char * bp)54 wrtermcap(char *bp)
55 {
56 register int ch;
57 register char *p;
58 char *t, *sep;
59
60 /* Find the end of the terminal names. */
61 if ((t = strchr(bp, ':')) == NULL)
62 errx(1, "termcap names not colon terminated");
63 *t++ = '\0';
64
65 /* Output terminal names that don't have whitespace. */
66 sep = strdup("");
67 while ((p = strsep(&bp, "|")) != NULL)
68 if (*p != '\0' && strpbrk(p, " \t") == NULL) {
69 (void)printf("%s%s", sep, p);
70 sep = strdup("|");
71 }
72 (void)putchar(':');
73
74 /*
75 * Output fields, transforming any dangerous characters. Skip
76 * empty fields or fields containing only whitespace.
77 */
78 while ((p = strsep(&t, ":")) != NULL) {
79 while ((ch = *p) != '\0' && isspace(ch))
80 ++p;
81 if (ch == '\0')
82 continue;
83 while ((ch = *p++) != '\0')
84 switch(ch) {
85 case '\033':
86 (void)printf("\\E");
87 case ' ': /* No spaces. */
88 (void)printf("\\040");
89 break;
90 case '!': /* No csh history chars. */
91 (void)printf("\\041");
92 break;
93 case ',': /* No csh history chars. */
94 (void)printf("\\054");
95 break;
96 case '"': /* No quotes. */
97 (void)printf("\\042");
98 break;
99 case '\'': /* No quotes. */
100 (void)printf("\\047");
101 break;
102 case '`': /* No quotes. */
103 (void)printf("\\140");
104 break;
105 case '\\': /* Anything following is OK. */
106 case '^':
107 (void)putchar(ch);
108 if ((ch = *p++) == '\0')
109 break;
110 /* FALLTHROUGH */
111 default:
112 (void)putchar(ch);
113 }
114 (void)putchar(':');
115 }
116 }
117