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git.cameronkatri.com Git - mandoc.git/blob - compat_getsubopt.c
9 /* $OpenBSD: getsubopt.c,v 1.4 2005/08/08 08:05:36 espie Exp $ */
12 * Copyright (c) 1990, 1993
13 * The Regents of the University of California. All rights reserved.
15 * Redistribution and use in source and binary forms, with or without
16 * modification, are permitted provided that the following conditions
18 * 1. Redistributions of source code must retain the above copyright
19 * notice, this list of conditions and the following disclaimer.
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 * 3. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
45 * The SVID interface to getsubopt provides no way of figuring out which
46 * part of the suboptions list wasn't matched. This makes error messages
47 * tricky... The extern variable suboptarg is a pointer to the token
53 getsubopt(char **optionp
, char * const *tokens
, char **valuep
)
58 suboptarg
= *valuep
= NULL
;
60 if (!optionp
|| !*optionp
)
63 /* skip leading white-space, commas */
64 for (p
= *optionp
; *p
&& (*p
== ',' || *p
== ' ' || *p
== '\t'); ++p
);
71 /* save the start of the token, and skip the rest of the token. */
73 *++p
&& *p
!= ',' && *p
!= '=' && *p
!= ' ' && *p
!= '\t';);
77 * If there's an equals sign, set the value pointer, and
78 * skip over the value part of the token. Terminate the
84 *p
&& *p
!= ',' && *p
!= ' ' && *p
!= '\t'; ++p
);
89 /* Skip any whitespace or commas after this token. */
90 for (; *p
&& (*p
== ',' || *p
== ' ' || *p
== '\t'); ++p
);
93 /* set optionp for next round. */
96 for (cnt
= 0; *tokens
; ++tokens
, ++cnt
)
97 if (!strcmp(suboptarg
, *tokens
))