1 files changed, 224 insertions, 0 deletions
diff --git a/bin/stty/modes.c b/bin/stty/modes.c
new file mode 100644
index 0000000..a7877af
--- /dev/null
+++ b/bin/stty/modes.c
@@ -0,0 +1,224 @@
+/* $NetBSD: modes.c,v 1.18 2015/05/01 17:01:08 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[] = "@(#)modes.c	8.3 (Berkeley) 4/2/94";
+#else
+__RCSID("$NetBSD: modes.c,v 1.18 2015/05/01 17:01:08 christos Exp $");
+#endif
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <stddef.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include "stty.h"
+#include "extern.h"
+
+struct modes {
+	const char *name;
+	tcflag_t flag;
+};
+
+struct specialmodes {
+	const char *name;
+	tcflag_t set;
+	tcflag_t unset;
+};
+
+/*
+ * The code in optlist() depends on minus options following regular
+ * options, i.e. "foo" must immediately precede "-foo".
+ */
+const struct modes cmodes[] = {
+	{ "cstopb",	CSTOPB },
+	{ "cread",	CREAD },
+	{ "parenb",	PARENB },
+	{ "parodd",	PARODD },
+	{ "hupcl",	HUPCL },
+	{ "hup",	HUPCL },
+	{ "clocal",	CLOCAL },
+	{ "crtscts",	CRTSCTS },
+	{ "mdmbuf",	MDMBUF },
+	{ "cdtrcts",	CDTRCTS },
+	{ .name = NULL },
+};
+
+const struct specialmodes cspecialmodes[] = {
+	{ "cs5",	CS5, CSIZE },
+	{ "cs6",	CS6, CSIZE },
+	{ "cs7",	CS7, CSIZE },
+	{ "cs8",	CS8, CSIZE },
+	{ "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 },
+	{ "-pass8",	PARENB | CS7, PARODD | CSIZE },
+	{ .name = NULL },
+};
+
+const struct modes imodes[] = {
+	{ "ignbrk",	IGNBRK },
+	{ "brkint",	BRKINT },
+	{ "ignpar",	IGNPAR },
+	{ "parmrk",	PARMRK },
+	{ "inpck",	INPCK },
+	{ "istrip",	ISTRIP },
+	{ "inlcr",	INLCR },
+	{ "igncr",	IGNCR },
+	{ "icrnl",	ICRNL },
+	{ "ixon",	IXON },
+	{ "flow",	IXON },
+	{ "ixoff",	IXOFF },
+	{ "tandem",	IXOFF },
+	{ "ixany",	IXANY },
+	{ "imaxbel",	IMAXBEL },
+	{ .name = NULL },
+};
+
+const struct specialmodes ispecialmodes[] = {
+	{ "decctlq",	0, IXANY },
+	{ "-decctlq",	IXANY, 0 },
+	{ .name = NULL },
+};
+
+const struct modes lmodes[] = {
+	{ "echo",	ECHO },
+	{ "echoe",	ECHOE },
+	{ "crterase",	ECHOE },
+	{ "crtbs",	ECHOE },	/* crtbs not supported, close enough */
+	{ "echok",	ECHOK },
+	{ "echoke",	ECHOKE },
+	{ "crtkill",	ECHOKE },
+	{ "altwerase",	ALTWERASE },
+	{ "iexten",	IEXTEN },
+	{ "echonl",	ECHONL },
+	{ "echoctl",	ECHOCTL },
+	{ "ctlecho",	ECHOCTL },
+	{ "echoprt",	ECHOPRT },
+	{ "prterase",	ECHOPRT },
+	{ "isig",	ISIG },
+	{ "icanon",	ICANON },
+	{ "noflsh",	NOFLSH },
+	{ "tostop",	TOSTOP },
+	{ "flusho",	FLUSHO },
+	{ "pendin",	PENDIN },
+	{ "nokerninfo",	NOKERNINFO },
+	{ .name = NULL },
+};
+
+const struct specialmodes lspecialmodes[] = {
+	{ "crt",	ECHOE|ECHOKE|ECHOCTL, ECHOK|ECHOPRT },
+	{ "-crt",	ECHOK, ECHOE|ECHOKE|ECHOCTL },
+	{ "newcrt",	ECHOE|ECHOKE|ECHOCTL, ECHOK|ECHOPRT },
+	{ "-newcrt",	ECHOK, ECHOE|ECHOKE|ECHOCTL },
+	{ "kerninfo",	0, NOKERNINFO },
+	{ "-kerninfo",	NOKERNINFO, 0 },
+	{ .name = NULL },
+};
+
+const struct modes omodes[] = {
+	{ "opost",	OPOST },
+	{ "onlcr",	ONLCR },
+	{ "ocrnl",	OCRNL },
+	{ "oxtabs",	OXTABS },
+	{ "onocr",	ONOCR },
+	{ "onlret",	ONLRET },
+	{ .name = NULL },
+};
+
+const struct specialmodes ospecialmodes[] = {
+	{ "litout",	0, OPOST },
+	{ "-litout",	OPOST, 0 },
+	{ "tabs",	0, OXTABS },		/* "preserve" tabs */
+	{ "-tabs",	OXTABS, 0 },
+	{ .name = NULL },
+};
+
+#define	CHK(s)	(!strcmp(name, s))
+
+static int
+modeset(const char *name, const struct modes *mp,
+    const struct specialmodes *smp, tcflag_t *f)
+{
+	bool neg;
+
+	for (; smp->name; ++smp)
+		if (CHK(smp->name)) {
+			*f &= ~smp->unset;
+			*f |= smp->set;
+			return 1;
+		}
+
+	if ((neg = (*name == '-')))
+		name++;
+
+	for (; mp->name; ++mp)
+		if (CHK(mp->name)) {
+			if (neg)
+				*f &= ~mp->flag;
+			else
+				*f |= mp->flag;
+			return 1;
+		}
+
+	return 0;
+}
+
+int
+msearch(char ***argvp, struct info *ip)
+{
+	const char *name = **argvp;
+
+	if (modeset(name, cmodes, cspecialmodes, &ip->t.c_cflag))
+		goto out;
+		
+	if (modeset(name, imodes, ispecialmodes, &ip->t.c_iflag))
+		goto out;
+
+	if (modeset(name, lmodes, lspecialmodes, &ip->t.c_lflag))
+		goto out;
+
+	if (modeset(name, omodes, ospecialmodes, &ip->t.c_oflag))
+		goto out;
+
+	return 0;
+out:
+	ip->set = 1;
+	return 1;
+}