mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-12-05 14:29:28 +00:00
99 lines
3.3 KiB
C
99 lines
3.3 KiB
C
/*-
|
|
* Copyright (c) 1990, 1993
|
|
* 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[] = "@(#)getsubopt.c 8.1 (Berkeley) 6/4/93";
|
|
#endif /* not lint */
|
|
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
|
|
/*
|
|
* The SVID interface to getsubopt provides no way of figuring out which
|
|
* part of the suboptions list wasn't matched. This makes error messages
|
|
* tricky... The extern variable suboptarg is a pointer to the token
|
|
* which didn't match.
|
|
*/
|
|
char *suboptarg;
|
|
|
|
getsubopt(optionp, tokens, valuep)
|
|
register char **optionp, **valuep;
|
|
register char * const *tokens;
|
|
{
|
|
register int cnt;
|
|
register char *p;
|
|
|
|
suboptarg = *valuep = NULL;
|
|
|
|
if (!optionp || !*optionp)
|
|
return(-1);
|
|
|
|
/* skip leading white-space, commas */
|
|
for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
|
|
|
|
if (!*p) {
|
|
*optionp = p;
|
|
return(-1);
|
|
}
|
|
|
|
/* save the start of the token, and skip the rest of the token. */
|
|
for (suboptarg = p;
|
|
*++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
|
|
|
|
if (*p) {
|
|
/*
|
|
* If there's an equals sign, set the value pointer, and
|
|
* skip over the value part of the token. Terminate the
|
|
* token.
|
|
*/
|
|
if (*p == '=') {
|
|
*p = '\0';
|
|
for (*valuep = ++p;
|
|
*p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
|
|
if (*p)
|
|
*p++ = '\0';
|
|
} else
|
|
*p++ = '\0';
|
|
/* Skip any whitespace or commas after this token. */
|
|
for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
|
|
}
|
|
|
|
/* set optionp for next round. */
|
|
*optionp = p;
|
|
|
|
for (cnt = 0; *tokens; ++tokens, ++cnt)
|
|
if (!strcmp(suboptarg, *tokens))
|
|
return(cnt);
|
|
return(-1);
|
|
}
|