/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * 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/types.h>

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "stty.h"
#include "extern.h"

static void gerr(const char *s) __dead2;

static void
gerr(const char *s)
{
        if (s)
                errx(1, "illegal gfmt1 option -- %s", s);
        else
                errx(1, "illegal gfmt1 option");
}

void
gprint(struct termios *tp, struct winsize *wp __unused, int ldisc __unused)
{
        struct cchar *cp;

        (void)printf("gfmt1:cflag=%lx:iflag=%lx:lflag=%lx:oflag=%lx:",
            (u_long)tp->c_cflag, (u_long)tp->c_iflag, (u_long)tp->c_lflag,
            (u_long)tp->c_oflag);
        for (cp = cchars1; cp->name; ++cp)
                (void)printf("%s=%x:", cp->name, tp->c_cc[cp->sub]);
        (void)printf("ispeed=%lu:ospeed=%lu\n",
            (u_long)cfgetispeed(tp), (u_long)cfgetospeed(tp));
}

void
gread(struct termios *tp, char *s)
{
        struct cchar *cp;
        char *ep, *p;
        long tmp;

        if ((s = strchr(s, ':')) == NULL)
                gerr(NULL);
        for (++s; s != NULL;) {
                p = strsep(&s, ":\0");
                if (!p || !*p)
                        break;
                if (!(ep = strchr(p, '=')))
                        gerr(p);
                *ep++ = '\0';
                tmp = strtoul(ep, NULL, 0x10);

#define CHK(s)  (*p == s[0] && !strcmp(p, s))
                if (CHK("cflag")) {
                        tp->c_cflag = tmp;
                        continue;
                }
                if (CHK("iflag")) {
                        tp->c_iflag = tmp;
                        continue;
                }
                if (CHK("ispeed")) {
                        tmp = strtoul(ep, NULL, 10);
                        tp->c_ispeed = tmp;
                        continue;
                }
                if (CHK("lflag")) {
                        tp->c_lflag = tmp;
                        continue;
                }
                if (CHK("oflag")) {
                        tp->c_oflag = tmp;
                        continue;
                }
                if (CHK("ospeed")) {
                        tmp = strtoul(ep, NULL, 10);
                        tp->c_ospeed = tmp;
                        continue;
                }
                for (cp = cchars1; cp->name != NULL; ++cp)
                        if (CHK(cp->name)) {
                                if (cp->sub == VMIN || cp->sub == VTIME)
                                        tmp = strtoul(ep, NULL, 10);
                                tp->c_cc[cp->sub] = tmp;
                                break;
                        }
                if (cp->name == NULL)
                        gerr(p);
        }
}