* Copyright (c) 1990 The Regents of the University of California.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 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
static char sccsid
[] = "@(#)getsubopt.c 5.2 (Berkeley) 2/24/91";
* 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
getsubopt(optionp
, tokens
, valuep
)
register char **optionp
, **valuep
;
register char * const *tokens
;
suboptarg
= *valuep
= NULL
;
if (!optionp
|| !*optionp
)
/* skip leading white-space, commas */
for (p
= *optionp
; *p
&& (*p
== ',' || *p
== ' ' || *p
== '\t'); ++p
);
/* save the start of the token, and skip the rest of the token. */
*++p
&& *p
!= ',' && *p
!= '=' && *p
!= ' ' && *p
!= '\t';);
* If there's an equals sign, set the value pointer, and
* skip over the value part of the token. Terminate the
*p
&& *p
!= ',' && *p
!= ' ' && *p
!= '\t'; ++p
);
/* Skip any whitespace or commas after this token. */
for (; *p
&& (*p
== ',' || *p
== ' ' || *p
== '\t'); ++p
);
/* set optionp for next round. */
for (cnt
= 0; *tokens
; ++tokens
, ++cnt
)
if (!strcmp(suboptarg
, *tokens
))