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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-26 06:18:55 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-26 06:18:55 +0000 |
commit | e3cfc8ce61f788739c66445d903f8beacb40c93d (patch) | |
tree | ba7beef9ee9289c4383bad976f88710e44c98b4d /bin/stty/cchar.c | |
parent | 862fdf11a2ede45dec0da01ed575525d79468981 (diff) | |
download | FreeBSD-src-e3cfc8ce61f788739c66445d903f8beacb40c93d.zip FreeBSD-src-e3cfc8ce61f788739c66445d903f8beacb40c93d.tar.gz |
BSD 4.4 Lite bin Sources
Diffstat (limited to 'bin/stty/cchar.c')
-rw-r--r-- | bin/stty/cchar.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/bin/stty/cchar.c b/bin/stty/cchar.c new file mode 100644 index 0000000..79cb90a --- /dev/null +++ b/bin/stty/cchar.c @@ -0,0 +1,145 @@ +/*- + * 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. 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. + */ + +#ifndef lint +static char sccsid[] = "@(#)cchar.c 8.5 (Berkeley) 4/2/94"; +#endif /* not lint */ + +#include <sys/types.h> + +#include <err.h> +#include <limits.h> +#include <stddef.h> +#include <stdlib.h> +#include <string.h> + +#include "stty.h" +#include "extern.h" + +/* + * Special control characters. + * + * Cchars1 are the standard names, cchars2 are the old aliases. + * The first are displayed, but both are recognized on the + * command line. + */ +struct cchar cchars1[] = { + { "discard", VDISCARD, CDISCARD }, + { "dsusp", VDSUSP, CDSUSP }, + { "eof", VEOF, CEOF }, + { "eol", VEOL, CEOL }, + { "eol2", VEOL2, CEOL }, + { "erase", VERASE, CERASE }, + { "intr", VINTR, CINTR }, + { "kill", VKILL, CKILL }, + { "lnext", VLNEXT, CLNEXT }, + { "min", VMIN, CMIN }, + { "quit", VQUIT, CQUIT }, + { "reprint", VREPRINT, CREPRINT }, + { "start", VSTART, CSTART }, + { "status", VSTATUS, CSTATUS }, + { "stop", VSTOP, CSTOP }, + { "susp", VSUSP, CSUSP }, + { "time", VTIME, CTIME }, + { "werase", VWERASE, CWERASE }, + { NULL }, +}; + +struct cchar cchars2[] = { + { "brk", VEOL, CEOL }, + { "flush", VDISCARD, CDISCARD }, + { "rprnt", VREPRINT, CREPRINT }, + { NULL }, +}; + +static int +c_cchar(a, b) + const void *a, *b; +{ + + return (strcmp(((struct cchar *)a)->name, ((struct cchar *)b)->name)); +} + +int +csearch(argvp, ip) + char ***argvp; + struct info *ip; +{ + struct cchar *cp, tmp; + long val; + char *arg, *ep, *name; + + name = **argvp; + + tmp.name = name; + if (!(cp = (struct cchar *)bsearch(&tmp, cchars1, + sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar), + c_cchar)) && !(cp = (struct cchar *)bsearch(&tmp, cchars1, + sizeof(cchars1)/sizeof(struct cchar) - 1, sizeof(struct cchar), + c_cchar))) + return (0); + + arg = *++*argvp; + if (!arg) { + warnx("option requires an argument -- %s", name); + usage(); + } + +#define CHK(s) (*arg == s[0] && !strcmp(arg, s)) + if (CHK("undef") || CHK("<undef>")) + ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; + else if (cp->sub == VMIN || cp->sub == VTIME) { + val = strtol(arg, &ep, 10); + if (val == _POSIX_VDISABLE) { + warnx("value of %ld would disable the option -- %s", + val, name); + usage(); + } + if (val > UCHAR_MAX) { + warnx("maximum option value is %d -- %s", + UCHAR_MAX, name); + usage(); + } + if (*ep != '\0') { + warnx("option requires a numeric argument -- %s", name); + usage(); + } + ip->t.c_cc[cp->sub] = val; + } else if (arg[0] == '^') + ip->t.c_cc[cp->sub] = (arg[1] == '?') ? 0177 : + (arg[1] == '-') ? _POSIX_VDISABLE : arg[1] & 037; + else + ip->t.c_cc[cp->sub] = arg[0]; + ip->set = 1; + return (1); +} |