/*-
 * Copyright (c) 1991 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 */

/* This is slightly hacked version of bin/stty/modes.c.
 * James Clark (jjc@jclark.com) as part of lprps package.
 */

#ifndef lint
static char sccsid[] = "@(#)modes.c	5.4 (Berkeley) 6/10/91";
#endif /* not lint */

/* The Berkeley spooler uses some flags which are not supported by POSIX
 * but which may be present in SYS5 or BSD
 */
#if defined(_POSIX_SOURCE)
#undef _POSIX_SOURCE
#endif

#include <termios.h>
#include <string.h>

struct modes {
	char *name;
	long set;
	long unset;
};

static struct modes cmodes[] = {
	"cs5",		CS5, CSIZE,
	"cs6",		CS6, CSIZE,
	"cs7",		CS7, CSIZE,
	"cs8",		CS8, CSIZE,
	"cstopb",	CSTOPB, 0,
	"-cstopb",	0, CSTOPB,
	"cread",	CREAD, 0,
	"-cread",	0, CREAD,
	"parenb",	PARENB, 0,
	"-parenb",	0, PARENB,
	"parodd",	PARODD, 0,
	"-parodd",	0, PARODD,
	"parity",	PARENB | CS7, PARODD | CSIZE,
	"-parity",	CS8, PARODD | PARENB | CSIZE,
	"evenp",	PARENB | CS7, PARODD | CSIZE,
	"-evenp",	CS8, PARODD | PARENB | CSIZE,
	"oddp",		PARENB | CS7 | PARODD, CSIZE,
	"-oddp",	CS8, PARODD | PARENB | CSIZE,
	"pass8",	CS8, PARODD | PARENB | CSIZE,
	"hupcl",	HUPCL, 0,
	"-hupcl",	0, HUPCL,
	"hup",		HUPCL, 0,
	"-hup",		0, HUPCL,
	"clocal",	CLOCAL, 0,
	"-clocal",	0, CLOCAL,
	NULL
};

static struct modes imodes[] = {
	"ignbrk",	IGNBRK, 0,
	"-ignbrk",	0, IGNBRK,
	"brkint",	BRKINT, 0,
	"-brkint",	0, BRKINT,
	"ignpar",	IGNPAR, 0,
	"-ignpar",	0, IGNPAR,
	"parmrk",	PARMRK, 0,
	"-parmrk",	0, PARMRK,
	"inpck",	INPCK, 0,
	"-inpck",	0, INPCK,
	"istrip",	ISTRIP, 0,
	"-istrip",	0, ISTRIP,
	"inlcr",	INLCR, 0,
	"-inlcr",	0, INLCR,
	"igncr",	IGNCR, 0,
	"-igncr",	0, IGNCR,
	"icrnl",	ICRNL, 0,
	"-icrnl",	0, ICRNL,
	"ixon",		IXON, 0,
	"-ixon",	0, IXON,
	"flow",		IXON, 0,
	"-flow",	0, IXON,
	"ixoff",	IXOFF, 0,
	"-ixoff",	0, IXOFF,
	"tandem",	IXOFF, 0,
	"-tandem",	0, IXOFF,
	"ixany",	IXANY, 0,
	"-ixany",	0, IXANY,
	"decctlq",	0, IXANY,
	"-decctlq",	IXANY, 0,
#ifdef IMAXBEL
	"imaxbel",	IMAXBEL, 0,
	"-imaxbel",	0, IMAXBEL,
#endif
	NULL
};

static struct modes lmodes[] = {
	"echo",		ECHO, 0,
	"-echo",	0, ECHO,
	"echoe",	ECHOE, 0,
	"-echoe",	0, ECHOE,
	"crterase",	ECHOE, 0,
	"-crterase",	0, ECHOE,
	"crtbs",	ECHOE, 0,   /* crtbs not supported, close enough */
	"-crtbs",	0, ECHOE,
	"echok",	ECHOK, 0,
	"-echok",	0, ECHOK,
#ifdef ECHOKE
	"echoke",	ECHOKE, 0,
	"-echoke",	0, ECHOKE,
	"crtkill",	ECHOKE, 0,
	"-crtkill",	0, ECHOKE,
#endif
	"iexten",	IEXTEN, 0,
	"-iexten",	0, IEXTEN,
	"echonl",	ECHONL, 0,
	"-echonl",	0, ECHONL,
#ifdef ECHOCTL
	"echoctl",	ECHOCTL, 0,
	"-echoctl",	0, ECHOCTL,
	"ctlecho",	ECHOCTL, 0,
	"-ctlecho",	0, ECHOCTL,
#endif
#ifdef ECHOPRT
	"echoprt",	ECHOPRT, 0,
	"-echoprt",	0, ECHOPRT,
	"prterase",	ECHOPRT, 0,
	"-prterase",	0, ECHOPRT,
#endif
	"isig",		ISIG, 0,
	"-isig",	0, ISIG,
	"icanon",	ICANON, 0,
	"-icanon",	0, ICANON,
	"noflsh",	NOFLSH, 0,
	"-noflsh",	0, NOFLSH,
	"tostop",	TOSTOP, 0,
	"-tostop",	0, TOSTOP,
#ifndef POSIX
	"mdmbuf",	MDMBUF, 0,
	"-mdmbuf",	0, MDMBUF,
#endif
	"flusho",	FLUSHO, 0,
	"-flusho",	0, FLUSHO,
	"pendin",	PENDIN, 0,
	"-pendin",	0, PENDIN,
#if defined(ECHOKE) && defined(ECHOCTL) && defined(ECHOPRT)
	"crt",		ECHOE|ECHOKE|ECHOCTL, ECHOK|ECHOPRT,
	"-crt",		ECHOK, ECHOE|ECHOKE|ECHOCTL,
	"newcrt",	ECHOE|ECHOKE|ECHOCTL, ECHOK|ECHOPRT,
	"-newcrt",	ECHOK, ECHOE|ECHOKE|ECHOCTL, 
#endif
	NULL
};

static struct modes omodes[] = {
	"opost",	OPOST, 0,
	"-opost",	0, OPOST,
	"litout",	0, OPOST,
	"-litout",	OPOST, 0,
	"onlcr",	ONLCR, 0,
	"-onlcr",	0, ONLCR,
	NULL
};

#define	CHK(s)	(*name == s[0] && !strcmp(name, s))

/* Return 0 for OK, -1 on error (analogous to cfset[oi]speed.) */

setmode(tp, name)
	struct termios *tp;
	char *name;
{
	register struct modes *mp;

	for (mp = cmodes; mp->name; ++mp)
		if (CHK(mp->name)) {
			tp->c_cflag &= ~mp->unset;
			tp->c_cflag |= mp->set;
			return(0);
		}
	for (mp = imodes; mp->name; ++mp)
		if (CHK(mp->name)) {
			tp->c_iflag &= ~mp->unset;
			tp->c_iflag |= mp->set;
			return(0);
		}
	for (mp = lmodes; mp->name; ++mp)
		if (CHK(mp->name)) {
			tp->c_lflag &= ~mp->unset;
			tp->c_lflag |= mp->set;
			return(0);
		}
	for (mp = omodes; mp->name; ++mp)
		if (CHK(mp->name)) {
			tp->c_oflag &= ~mp->unset;
			tp->c_oflag |= mp->set;
			return(0);
		}
	return(-1);
}