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f53744c5 WJ |
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 | ||
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) (*name == s[0] && !strcmp(name, 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 | |
118 | c_cchar(a, b) | |
119 | const void *a, *b; | |
120 | { | |
121 | return(strcmp(((struct cchar *)a)->name, ((struct cchar *)b)->name)); | |
122 | } |