1/* $NetBSD: cchar.c,v 1.16 2006/10/16 00:37:55 christos 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. 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#ifndef lint 34#if 0 35static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94"; 36#else 37__RCSID("$NetBSD: cchar.c,v 1.16 2006/10/16 00:37:55 christos Exp $"); 38#endif 39#endif /* not lint */ 40 41#include <sys/types.h> 42 43#include <err.h> 44#include <limits.h> 45#include <stddef.h> 46#include <stdlib.h> 47#include <string.h> 48 49#include "stty.h" 50#include "extern.h" 51 52/* 53 * Special control characters. 54 * 55 * Cchars1 are the standard names, cchars2 are the old aliases. 56 * The first are displayed, but both are recognized on the 57 * command line. 58 */ 59const struct cchar cchars1[] = { 60 { "discard", VDISCARD, CDISCARD }, 61 { "dsusp", VDSUSP, CDSUSP }, 62 { "eof", VEOF, CEOF }, 63 { "eol", VEOL, CEOL }, 64 { "eol2", VEOL2, CEOL }, 65 { "erase", VERASE, CERASE }, 66 { "intr", VINTR, CINTR }, 67 { "kill", VKILL, CKILL }, 68 { "lnext", VLNEXT, CLNEXT }, 69 { "min", VMIN, CMIN }, 70 { "quit", VQUIT, CQUIT }, 71 { "reprint", VREPRINT, CREPRINT }, 72 { "start", VSTART, CSTART }, 73 { "status", VSTATUS, CSTATUS }, 74 { "stop", VSTOP, CSTOP }, 75 { "susp", VSUSP, CSUSP }, 76 { "time", VTIME, CTIME }, 77 { "werase", VWERASE, CWERASE }, 78 { .name = NULL }, 79}; 80 81const struct cchar cchars2[] = { 82 { "brk", VEOL, CEOL }, 83 { "flush", VDISCARD, CDISCARD }, 84 { "rprnt", VREPRINT, CREPRINT }, 85 { .name = NULL }, 86}; 87 88static int c_cchar(const void *, const void *); 89 90static int 91c_cchar(const void *a, const void *b) 92{ 93 return (strcmp(((const struct cchar *)a)->name, 94 ((const struct cchar *)b)->name)); 95} 96 97int 98csearch(char ***argvp, struct info *ip) 99{ 100 struct cchar *cp, tmp; 101 long val; 102 char *arg, *ep, *name; 103 104 name = **argvp; 105 106 tmp.name = name; 107 if (!(cp = (struct cchar *)bsearch(&tmp, cchars1, 108 sizeof(cchars1)/sizeof(cchars1[0]) - 1, sizeof(cchars1[0]), 109 c_cchar)) && 110 !(cp = (struct cchar *)bsearch(&tmp, cchars2, 111 sizeof(cchars2)/sizeof(cchars2[0]) - 1, sizeof(cchars2[0]), 112 c_cchar))) 113 return (0); 114 115 arg = *++*argvp; 116 if (!arg) { 117 warnx("option requires an argument -- %s", name); 118 usage(); 119 } 120 121#define CHK(s) (*arg == s[0] && !strcmp(arg, s)) 122 if (CHK("undef") || CHK("<undef>")) 123 ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; 124 else if (cp->sub == VMIN || cp->sub == VTIME) { 125 val = strtol(arg, &ep, 10); 126 if (val == _POSIX_VDISABLE) { 127 warnx("value of %ld would disable the option -- %s", 128 val, name); 129 usage(); 130 } 131 if (val > UCHAR_MAX) { 132 warnx("maximum option value is %d -- %s", 133 UCHAR_MAX, name); 134 usage(); 135 } 136 if (*ep != '\0') { 137 warnx("option requires a numeric argument -- %s", name); 138 usage(); 139 } 140 ip->t.c_cc[cp->sub] = (cc_t)val; 141 } else if (arg[0] == '^') 142 ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 : 143 (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037; 144 else 145 ip->t.c_cc[cp->sub] = arg[0]; 146 ip->set = 1; 147 return (1); 148} 149