1 #ifdef HAVE_CONFIG_H 2 #include "config.h" 3 #endif 4 5 #ifdef HAVE_GETSUBOPT 6 7 int dummy; 8 9 #else 10 11 /* $OpenBSD: getsubopt.c,v 1.4 2005/08/08 08:05:36 espie Exp $ */ 12 13 /*- 14 * Copyright (c) 1990, 1993 15 * The Regents of the University of California. All rights reserved. 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 3. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 */ 41 42 #include <unistd.h> 43 #include <stdlib.h> 44 #include <string.h> 45 46 /* 47 * The SVID interface to getsubopt provides no way of figuring out which 48 * part of the suboptions list wasn't matched. This makes error messages 49 * tricky... The extern variable suboptarg is a pointer to the token 50 * which didn't match. 51 */ 52 char *suboptarg; 53 54 int 55 getsubopt(char **optionp, char * const *tokens, char **valuep) 56 { 57 int cnt; 58 char *p; 59 60 suboptarg = *valuep = NULL; 61 62 if (!optionp || !*optionp) 63 return(-1); 64 65 /* skip leading white-space, commas */ 66 for (p = *optionp; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p); 67 68 if (!*p) { 69 *optionp = p; 70 return(-1); 71 } 72 73 /* save the start of the token, and skip the rest of the token. */ 74 for (suboptarg = p; 75 *++p && *p != ',' && *p != '=' && *p != ' ' && *p != '\t';); 76 77 if (*p) { 78 /* 79 * If there's an equals sign, set the value pointer, and 80 * skip over the value part of the token. Terminate the 81 * token. 82 */ 83 if (*p == '=') { 84 *p = '\0'; 85 for (*valuep = ++p; 86 *p && *p != ',' && *p != ' ' && *p != '\t'; ++p); 87 if (*p) 88 *p++ = '\0'; 89 } else 90 *p++ = '\0'; 91 /* Skip any whitespace or commas after this token. */ 92 for (; *p && (*p == ',' || *p == ' ' || *p == '\t'); ++p); 93 } 94 95 /* set optionp for next round. */ 96 *optionp = p; 97 98 for (cnt = 0; *tokens; ++tokens, ++cnt) 99 if (!strcmp(suboptarg, *tokens)) 100 return(cnt); 101 return(-1); 102 } 103 104 #endif 105