cchar.c revision 127958
1185029Spjd/*- 2185029Spjd * Copyright (c) 1991, 1993, 1994 3185029Spjd * The Regents of the University of California. All rights reserved. 4185029Spjd * 5185029Spjd * Redistribution and use in source and binary forms, with or without 6185029Spjd * modification, are permitted provided that the following conditions 7185029Spjd * are met: 8185029Spjd * 1. Redistributions of source code must retain the above copyright 9185029Spjd * notice, this list of conditions and the following disclaimer. 10185029Spjd * 2. Redistributions in binary form must reproduce the above copyright 11185029Spjd * notice, this list of conditions and the following disclaimer in the 12185029Spjd * documentation and/or other materials provided with the distribution. 13185029Spjd * 4. Neither the name of the University nor the names of its contributors 14185029Spjd * may be used to endorse or promote products derived from this software 15185029Spjd * without specific prior written permission. 16185029Spjd * 17185029Spjd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18185029Spjd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19185029Spjd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20185029Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21185029Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22219089Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23247265Smm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24185029Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25185029Spjd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26185029Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27185029Spjd * SUCH DAMAGE. 28185029Spjd */ 29185029Spjd 30185029Spjd#ifndef lint 31185029Spjd#if 0 32185029Spjdstatic char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94"; 33185029Spjd#endif 34185029Spjd#endif /* not lint */ 35185029Spjd#include <sys/cdefs.h> 36185029Spjd__FBSDID("$FreeBSD: head/bin/stty/cchar.c 127958 2004-04-06 20:06:54Z markm $"); 37185029Spjd 38185029Spjd#include <sys/types.h> 39185029Spjd 40185029Spjd#include <err.h> 41185029Spjd#include <limits.h> 42185029Spjd#include <stddef.h> 43185029Spjd#include <stdlib.h> 44185029Spjd#include <string.h> 45185029Spjd 46185029Spjd#include "stty.h" 47185029Spjd#include "extern.h" 48185029Spjd 49185029Spjdstatic int c_cchar(const void *, const void *); 50185029Spjd 51185029Spjd/* 52185029Spjd * Special control characters. 53185029Spjd * 54185029Spjd * Cchars1 are the standard names, cchars2 are the old aliases. 55185029Spjd * The first are displayed, but both are recognized on the 56185029Spjd * command line. 57185029Spjd */ 58185029Spjdstruct cchar cchars1[] = { 59185029Spjd { "discard", VDISCARD, CDISCARD }, 60185029Spjd { "dsusp", VDSUSP, CDSUSP }, 61185029Spjd { "eof", VEOF, CEOF }, 62185029Spjd { "eol", VEOL, CEOL }, 63185029Spjd { "eol2", VEOL2, CEOL }, 64185029Spjd { "erase", VERASE, CERASE }, 65185029Spjd { "erase2", VERASE2, CERASE2 }, 66185029Spjd { "intr", VINTR, CINTR }, 67185029Spjd { "kill", VKILL, CKILL }, 68219089Spjd { "lnext", VLNEXT, CLNEXT }, 69219089Spjd { "min", VMIN, CMIN }, 70219089Spjd { "quit", VQUIT, CQUIT }, 71219089Spjd { "reprint", VREPRINT, CREPRINT }, 72219089Spjd { "start", VSTART, CSTART }, 73219089Spjd { "status", VSTATUS, CSTATUS }, 74219089Spjd { "stop", VSTOP, CSTOP }, 75219089Spjd { "susp", VSUSP, CSUSP }, 76219089Spjd { "time", VTIME, CTIME }, 77219089Spjd { "werase", VWERASE, CWERASE }, 78219089Spjd { NULL, 0, 0}, 79219089Spjd}; 80185029Spjd 81185029Spjdstruct cchar cchars2[] = { 82185029Spjd { "brk", VEOL, CEOL }, 83185029Spjd { "flush", VDISCARD, CDISCARD }, 84185029Spjd { "rprnt", VREPRINT, CREPRINT }, 85185029Spjd { NULL, 0, 0 }, 86185029Spjd}; 87219089Spjd 88185029Spjdstatic int 89185029Spjdc_cchar(const void *a, const void *b) 90185029Spjd{ 91185029Spjd 92219089Spjd return (strcmp(((const struct cchar *)a)->name, ((const struct cchar *)b)->name)); 93185029Spjd} 94219089Spjd 95219089Spjdint 96185029Spjdcsearch(char ***argvp, struct info *ip) 97185029Spjd{ 98185029Spjd struct cchar *cp, tmp; 99185029Spjd long val; 100185029Spjd char *arg, *ep, *name; 101185029Spjd 102185029Spjd name = **argvp; 103185029Spjd 104185029Spjd tmp.name = name; 105185029Spjd if (!(cp = (struct cchar *)bsearch(&tmp, cchars1, 106185029Spjd sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar), 107185029Spjd c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars2, 108185029Spjd sizeof(cchars2)/sizeof(struct cchar) - 1, sizeof(struct cchar), 109185029Spjd c_cchar))) 110185029Spjd return (0); 111185029Spjd 112185029Spjd arg = *++*argvp; 113185029Spjd if (!arg) { 114185029Spjd warnx("option requires an argument -- %s", name); 115185029Spjd usage(); 116185029Spjd } 117185029Spjd 118185029Spjd#define CHK(s) (*arg == s[0] && !strcmp(arg, s)) 119185029Spjd if (CHK("undef") || CHK("<undef>")) 120185029Spjd ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; 121185029Spjd else if (cp->sub == VMIN || cp->sub == VTIME) { 122185029Spjd val = strtol(arg, &ep, 10); 123185029Spjd if (val > UCHAR_MAX) { 124185029Spjd warnx("maximum option value is %d -- %s", 125185029Spjd UCHAR_MAX, name); 126185029Spjd usage(); 127185029Spjd } 128185029Spjd if (*ep != '\0') { 129185029Spjd warnx("option requires a numeric argument -- %s", name); 130185029Spjd usage(); 131185029Spjd } 132185029Spjd ip->t.c_cc[cp->sub] = val; 133185029Spjd } else if (arg[0] == '^') 134185029Spjd ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 : 135185029Spjd (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037; 136185029Spjd else 137185029Spjd ip->t.c_cc[cp->sub] = arg[0]; 138185029Spjd ip->set = 1; 139185029Spjd return (1); 140185029Spjd} 141185029Spjd