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authorKiyoshi Aman <kiyoshi.aman+adelie@gmail.com>2019-02-01 22:55:37 +0000
committerKiyoshi Aman <kiyoshi.aman+adelie@gmail.com>2019-02-03 18:22:05 -0600
commit5b57d28ffb6e1ef86b50f7d05d977826eae89bfe (patch)
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+/* $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;
+}