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141 lines
4.1 KiB
C
141 lines
4.1 KiB
C
/*-
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94";
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#endif
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#endif /* not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <err.h>
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#include <limits.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include "stty.h"
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#include "extern.h"
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static int c_cchar(const void *, const void *);
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/*
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* Special control characters.
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*
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* Cchars1 are the standard names, cchars2 are the old aliases.
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* The first are displayed, but both are recognized on the
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* command line.
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*/
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struct cchar cchars1[] = {
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{ "discard", VDISCARD, CDISCARD },
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{ "dsusp", VDSUSP, CDSUSP },
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{ "eof", VEOF, CEOF },
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{ "eol", VEOL, CEOL },
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{ "eol2", VEOL2, CEOL },
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{ "erase", VERASE, CERASE },
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{ "erase2", VERASE2, CERASE2 },
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{ "intr", VINTR, CINTR },
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{ "kill", VKILL, CKILL },
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{ "lnext", VLNEXT, CLNEXT },
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{ "min", VMIN, CMIN },
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{ "quit", VQUIT, CQUIT },
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{ "reprint", VREPRINT, CREPRINT },
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{ "start", VSTART, CSTART },
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{ "status", VSTATUS, CSTATUS },
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{ "stop", VSTOP, CSTOP },
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{ "susp", VSUSP, CSUSP },
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{ "time", VTIME, CTIME },
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{ "werase", VWERASE, CWERASE },
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{ NULL, 0, 0},
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};
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struct cchar cchars2[] = {
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{ "brk", VEOL, CEOL },
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{ "flush", VDISCARD, CDISCARD },
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{ "rprnt", VREPRINT, CREPRINT },
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{ NULL, 0, 0 },
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};
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static int
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c_cchar(const void *a, const void *b)
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{
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return (strcmp(((const struct cchar *)a)->name, ((const struct cchar *)b)->name));
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}
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int
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csearch(char ***argvp, struct info *ip)
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{
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struct cchar *cp, tmp;
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long val;
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char *arg, *ep, *name;
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name = **argvp;
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tmp.name = name;
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if (!(cp = (struct cchar *)bsearch(&tmp, cchars1,
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sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar),
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c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars2,
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sizeof(cchars2)/sizeof(struct cchar) - 1, sizeof(struct cchar),
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c_cchar)))
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return (0);
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arg = *++*argvp;
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if (!arg) {
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warnx("option requires an argument -- %s", name);
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usage();
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}
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#define CHK(s) (*arg == s[0] && !strcmp(arg, s))
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if (CHK("undef") || CHK("<undef>"))
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ip->t.c_cc[cp->sub] = _POSIX_VDISABLE;
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else if (cp->sub == VMIN || cp->sub == VTIME) {
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val = strtol(arg, &ep, 10);
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if (val > UCHAR_MAX) {
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warnx("maximum option value is %d -- %s",
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UCHAR_MAX, name);
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usage();
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}
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if (*ep != '\0') {
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warnx("option requires a numeric argument -- %s", name);
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usage();
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}
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ip->t.c_cc[cp->sub] = val;
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} else if (arg[0] == '^')
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ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 :
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(arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037;
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else
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ip->t.c_cc[cp->sub] = arg[0];
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ip->set = 1;
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return (1);
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}
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