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compat_getsubopt.c revision 1.1.1.3 
      1 #include "config.h"
      2 
      3 #if HAVE_GETSUBOPT
      4 
      5 int dummy;
      6 
      7 #else
      8 
      9 /*	$Id: compat_getsubopt.c,v 1.1.1.3 2015/12/17 21:58:48 christos Exp $	*/
     10 /*	$OpenBSD: getsubopt.c,v 1.4 2005/08/08 08:05:36 espie Exp $	*/
     11 
     12 /*-
     13  * Copyright (c) 1990, 1993
     14  *	The Regents of the University of California.  All rights reserved.
     15  *
     16  * Redistribution and use in source and binary forms, with or without
     17  * modification, are permitted provided that the following conditions
     18  * are met:
     19  * 1. Redistributions of source code must retain the above copyright
     20  *    notice, this list of conditions and the following disclaimer.
     21  * 2. Redistributions in binary form must reproduce the above copyright
     22  *    notice, this list of conditions and the following disclaimer in the
     23  *    documentation and/or other materials provided with the distribution.
     24  * 3. Neither the name of the University nor the names of its contributors
     25  *    may be used to endorse or promote products derived from this software
     26  *    without specific prior written permission.
     27  *
     28  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     29  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     30  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     31  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     32  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     33  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     34  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     35  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     36  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     37  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     38  * SUCH DAMAGE.
     39  */
     40 
     41 #include <unistd.h>
     42 #include <stdlib.h>
     43 #include <string.h>
     44 
     45 int
     46 getsubopt(char **optionp, char * const *tokens, char **valuep)
     47 {
     48 	int cnt;
     49 	char *suboptarg;
     50 	char *p;
     51 
     52 	suboptarg = *valuep = NULL;
     53 
     54 	if (!optionp || !*optionp)
     55 		return(-1);
     56 
     57 	/* skip leading white-space, commas */
     58 	for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
     59 
     60 	if (!*p) {
     61 		*optionp = p;
     62 		return(-1);
     63 	}
     64 
     65 	/* save the start of the token, and skip the rest of the token. */
     66 	for (suboptarg = p;
     67 	    *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';);
     68 
     69 	if (*p) {
     70 		/*
     71 		 * If there's an equals sign, set the value pointer, and
     72 		 * skip over the value part of the token.  Terminate the
     73 		 * token.
     74 		 */
     75 		if (*p == '=') {
     76 			*p = '\0';
     77 			for (*valuep = ++p;
     78 			    *p && *p != ',' && *p != ' ' && *p != '\t'; ++p);
     79 			if (*p)
     80 				*p++ = '\0';
     81 		} else
     82 			*p++ = '\0';
     83 		/* Skip any whitespace or commas after this token. */
     84 		for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p);
     85 	}
     86 
     87 	/* set optionp for next round. */
     88 	*optionp = p;
     89 
     90 	for (cnt = 0; *tokens; ++tokens, ++cnt)
     91 		if (!strcmp(suboptarg, *tokens))
     92 			return(cnt);
     93 	return(-1);
     94 }
     95 
     96 #endif
     97