1 /* $NetBSD: cchar.c,v 1.13 1998/07/28 11:51:47 mycroft Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993, 1994 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94"; 40 #else 41 __RCSID("$NetBSD: cchar.c,v 1.13 1998/07/28 11:51:47 mycroft Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <sys/types.h> 46 47 #include <err.h> 48 #include <limits.h> 49 #include <stddef.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 #include "stty.h" 54 #include "extern.h" 55 56 /* 57 * Special control characters. 58 * 59 * Cchars1 are the standard names, cchars2 are the old aliases. 60 * The first are displayed, but both are recognized on the 61 * command line. 62 */ 63 const struct cchar cchars1[] = { 64 { "discard", VDISCARD, CDISCARD }, 65 { "dsusp", VDSUSP, CDSUSP }, 66 { "eof", VEOF, CEOF }, 67 { "eol", VEOL, CEOL }, 68 { "eol2", VEOL2, CEOL }, 69 { "erase", VERASE, CERASE }, 70 { "intr", VINTR, CINTR }, 71 { "kill", VKILL, CKILL }, 72 { "lnext", VLNEXT, CLNEXT }, 73 { "min", VMIN, CMIN }, 74 { "quit", VQUIT, CQUIT }, 75 { "reprint", VREPRINT, CREPRINT }, 76 { "start", VSTART, CSTART }, 77 { "status", VSTATUS, CSTATUS }, 78 { "stop", VSTOP, CSTOP }, 79 { "susp", VSUSP, CSUSP }, 80 { "time", VTIME, CTIME }, 81 { "werase", VWERASE, CWERASE }, 82 { NULL }, 83 }; 84 85 const struct cchar cchars2[] = { 86 { "brk", VEOL, CEOL }, 87 { "flush", VDISCARD, CDISCARD }, 88 { "rprnt", VREPRINT, CREPRINT }, 89 { NULL }, 90 }; 91 92 static int c_cchar __P((const void *, const void *)); 93 94 static int 95 c_cchar(a, b) 96 const void *a, *b; 97 { 98 return (strcmp(((const struct cchar *)a)->name, 99 ((const struct cchar *)b)->name)); 100 } 101 102 int 103 csearch(argvp, ip) 104 char ***argvp; 105 struct info *ip; 106 { 107 struct cchar *cp, tmp; 108 long val; 109 char *arg, *ep, *name; 110 111 name = **argvp; 112 113 tmp.name = name; 114 if (!(cp = (struct cchar *)bsearch(&tmp, cchars1, 115 sizeof(cchars1)/sizeof(cchars1[0]) - 1, sizeof(cchars1[0]), 116 c_cchar)) && 117 !(cp = (struct cchar *)bsearch(&tmp, cchars2, 118 sizeof(cchars2)/sizeof(cchars2[0]) - 1, sizeof(cchars2[0]), 119 c_cchar))) 120 return (0); 121 122 arg = *++*argvp; 123 if (!arg) { 124 warnx("option requires an argument -- %s", name); 125 usage(); 126 } 127 128 #define CHK(s) (*arg == s[0] && !strcmp(arg, s)) 129 if (CHK("undef") || CHK("<undef>")) 130 ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; 131 else if (cp->sub == VMIN || cp->sub == VTIME) { 132 val = strtol(arg, &ep, 10); 133 if (val == _POSIX_VDISABLE) { 134 warnx("value of %ld would disable the option -- %s", 135 val, name); 136 usage(); 137 } 138 if (val > UCHAR_MAX) { 139 warnx("maximum option value is %d -- %s", 140 UCHAR_MAX, name); 141 usage(); 142 } 143 if (*ep != '\0') { 144 warnx("option requires a numeric argument -- %s", name); 145 usage(); 146 } 147 ip->t.c_cc[cp->sub] = (cc_t)val; 148 } else if (arg[0] == '^') 149 ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 : 150 (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037; 151 else 152 ip->t.c_cc[cp->sub] = arg[0]; 153 ip->set = 1; 154 return (1); 155 } 156