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/* $NetBSD: cchar.c,v 1.16 2006/10/16 00:37:55 christos Exp $ */
/*-
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94";
#else
__RCSID("$NetBSD: cchar.c,v 1.16 2006/10/16 00:37:55 christos Exp $");
#endif
#endif /* not lint */
#include <sys/types.h>
#include <err.h>
#include <limits.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "stty.h"
#include "extern.h"
/*
* Special control characters.
*
* Cchars1 are the standard names, cchars2 are the old aliases.
* The first are displayed, but both are recognized on the
* command line.
*/
const struct cchar cchars1[] = {
{ "discard", VDISCARD, CDISCARD },
{ "dsusp", VDSUSP, CDSUSP },
{ "eof", VEOF, CEOF },
{ "eol", VEOL, CEOL },
{ "eol2", VEOL2, CEOL },
{ "erase", VERASE, CERASE },
{ "intr", VINTR, CINTR },
{ "kill", VKILL, CKILL },
{ "lnext", VLNEXT, CLNEXT },
{ "min", VMIN, CMIN },
{ "quit", VQUIT, CQUIT },
{ "reprint", VREPRINT, CREPRINT },
{ "start", VSTART, CSTART },
{ "status", VSTATUS, CSTATUS },
{ "stop", VSTOP, CSTOP },
{ "susp", VSUSP, CSUSP },
{ "time", VTIME, CTIME },
{ "werase", VWERASE, CWERASE },
{ .name = NULL },
};
const struct cchar cchars2[] = {
{ "brk", VEOL, CEOL },
{ "flush", VDISCARD, CDISCARD },
{ "rprnt", VREPRINT, CREPRINT },
{ .name = NULL },
};
static int c_cchar(const void *, const void *);
static int
c_cchar(const void *a, const void *b)
{
return (strcmp(((const struct cchar *)a)->name,
((const struct cchar *)b)->name));
}
int
csearch(char ***argvp, struct info *ip)
{
struct cchar *cp, tmp;
long val;
char *arg, *ep, *name;
name = **argvp;
tmp.name = name;
if (!(cp = (struct cchar *)bsearch(&tmp, cchars1,
sizeof(cchars1)/sizeof(cchars1[0]) - 1, sizeof(cchars1[0]),
c_cchar)) &&
!(cp = (struct cchar *)bsearch(&tmp, cchars2,
sizeof(cchars2)/sizeof(cchars2[0]) - 1, sizeof(cchars2[0]),
c_cchar)))
return (0);
arg = *++*argvp;
if (!arg) {
warnx("option requires an argument -- %s", name);
usage();
}
#define CHK(s) (*arg == s[0] && !strcmp(arg, s))
if (CHK("undef") || CHK("<undef>"))
ip->t.c_cc[cp->sub] = _POSIX_VDISABLE;
else if (cp->sub == VMIN || cp->sub == VTIME) {
val = strtol(arg, &ep, 10);
if (val == _POSIX_VDISABLE) {
warnx("value of %ld would disable the option -- %s",
val, name);
usage();
}
if (val > UCHAR_MAX) {
warnx("maximum option value is %d -- %s",
UCHAR_MAX, name);
usage();
}
if (*ep != '\0') {
warnx("option requires a numeric argument -- %s", name);
usage();
}
ip->t.c_cc[cp->sub] = (cc_t)val;
} else if (arg[0] == '^')
ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 :
(arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037;
else
ip->t.c_cc[cp->sub] = arg[0];
ip->set = 1;
return (1);
}
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