compat_getsubopt.c

   1 #include "config.h"
   2
   3 #if HAVE_GETSUBOPT
   4
   5 int dummy;
   6
   7 #else
   8
   9 /*      $Id: compat_getsubopt.c,v 1.5 2014/08/17 20:53:50 schwarze 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