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Diffstat (limited to 'bin/stty/cchar.c')
| -rw-r--r-- | bin/stty/cchar.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/bin/stty/cchar.c b/bin/stty/cchar.c new file mode 100644 index 000000000000..458867c7ffc4 --- /dev/null +++ b/bin/stty/cchar.c @@ -0,0 +1,122 @@ +/*- + * Copyright (c) 1991 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 5.4 (Berkeley) 6/10/91"; +#endif /* not lint */ + +#include <sys/types.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, + "quit", VQUIT, CQUIT, + "reprint", VREPRINT, CREPRINT, + "start", VSTART, CSTART, + "status", VSTATUS, CSTATUS, + "stop", VSTOP, CSTOP, + "susp", VSUSP, CSUSP, + "werase", VWERASE, CWERASE, + NULL, +}; + +struct cchar cchars2[] = { + "brk", VEOL, CEOL, + "flush", VDISCARD, CDISCARD, + "rprnt", VREPRINT, CREPRINT, + "xoff", VSTOP, CSTOP, + "xon", VSTART, CSTART, + NULL, +}; + +csearch(argvp, ip) + char ***argvp; + struct info *ip; +{ + extern char *usage; + register struct cchar *cp; + struct cchar tmp; + char *arg, *name; + static int c_cchar __P((const void *, const void *)); + + 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) + err("option requires an argument -- %s\n%s", name, usage); + +#define CHK(s) (*name == s[0] && !strcmp(name, s)) + if (CHK("undef") || CHK("<undef>")) + ip->t.c_cc[cp->sub] = _POSIX_VDISABLE; + 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); +} + +static +c_cchar(a, b) + const void *a, *b; +{ + return(strcmp(((struct cchar *)a)->name, ((struct cchar *)b)->name)); +} |