GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: bin/stty/cchar.c Lines: 9 30 30.0 %
Date: 2017-11-13 Branches: 2 28 7.1 %

Line Branch Exec Source
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/*	$OpenBSD: cchar.c,v 1.12 2016/03/23 14:52:42 mmcc Exp $	*/
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/*	$NetBSD: cchar.c,v 1.10 1996/05/07 18:20:05 jtc Exp $	*/
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/*-
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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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 * 3. 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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#include <sys/types.h>
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#include <sys/ioctl.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 <termios.h>
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#include "stty.h"
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#include "extern.h"
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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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const 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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	{ "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 },
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};
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const 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 },
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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(((struct cchar *)a)->name, ((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 || val < 0) {
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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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}