1 /*-
2 * Copyright (c) 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 static char sccsid[] = "@(#)cchar.c 5.4 (Berkeley) 6/10/91";
36 #endif /* not lint */
37
38 #include <sys/types.h>
39 #include <stddef.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include "stty.h"
43 #include "extern.h"
44
45 /*
46 * Special control characters.
47 *
48 * Cchars1 are the standard names, cchars2 are the old aliases.
49 * The first are displayed, but both are recognized on the
50 * command line.
51 */
52 struct cchar cchars1[] = {
53 "discard", VDISCARD, CDISCARD,
54 "dsusp", VDSUSP, CDSUSP,
55 "eof", VEOF, CEOF,
56 "eol", VEOL, CEOL,
57 "eol2", VEOL2, CEOL,
58 "erase", VERASE, CERASE,
59 "intr", VINTR, CINTR,
60 "kill", VKILL, CKILL,
61 "lnext", VLNEXT, CLNEXT,
62 "quit", VQUIT, CQUIT,
63 "reprint", VREPRINT, CREPRINT,
64 "start", VSTART, CSTART,
65 "status", VSTATUS, CSTATUS,
66 "stop", VSTOP, CSTOP,
67 "susp", VSUSP, CSUSP,
68 "werase", VWERASE, CWERASE,
69 NULL,
70 };
71
72 struct cchar cchars2[] = {
73 "brk", VEOL, CEOL,
74 "flush", VDISCARD, CDISCARD,
75 "rprnt", VREPRINT, CREPRINT,
76 "xoff", VSTOP, CSTOP,
77 "xon", VSTART, CSTART,
78 NULL,
79 };
80
csearch(argvp,ip)81 csearch(argvp, ip)
82 char ***argvp;
83 struct info *ip;
84 {
85 extern char *usage;
86 register struct cchar *cp;
87 struct cchar tmp;
88 char *arg, *name;
89 static int c_cchar __P((const void *, const void *));
90
91 name = **argvp;
92
93 tmp.name = name;
94 if (!(cp = (struct cchar *)bsearch(&tmp, cchars1,
95 sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar),
96 c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars1,
97 sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar),
98 c_cchar)))
99 return(0);
100
101 arg = *++*argvp;
102 if (!arg)
103 err("option requires an argument -- %s\n%s", name, usage);
104
105 #define CHK(s) (*arg == s[0] && !strcmp(arg, s))
106 if (CHK("undef") || CHK("<undef>"))
107 ip->t.c_cc[cp->sub] = _POSIX_VDISABLE;
108 else if (arg[0] == '^')
109 ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 :
110 (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037;
111 else
112 ip->t.c_cc[cp->sub] = arg[0];
113 ip->set = 1;
114 return(1);
115 }
116
117 static
c_cchar(a,b)118 c_cchar(a, b)
119 const void *a, *b;
120 {
121 return(strcmp(((struct cchar *)a)->name, ((struct cchar *)b)->name));
122 }
123