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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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} |