1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 /* 31 * getsubopt - parse suboptions from a flag argument. 32 */ 33 #pragma weak _getsubopt = getsubopt 34 35 #include "lint.h" 36 #include <sys/types.h> 37 #include <string.h> 38 #include <stdlib.h> 39 #include <stdio.h> 40 41 int 42 getsubopt(char **optionsp, char * const *tokens, char **valuep) 43 { 44 char *s = *optionsp, *p; 45 int i; 46 size_t optlen; 47 48 *valuep = NULL; 49 if (*s == '\0') 50 return (-1); 51 p = strchr(s, ','); /* find next option */ 52 if (p == NULL) { 53 p = s + strlen(s); 54 } else { 55 *p++ = '\0'; /* mark end and point to next */ 56 } 57 *optionsp = p; /* point to next option */ 58 p = strchr(s, '='); /* find value */ 59 if (p == NULL) { 60 optlen = strlen(s); 61 *valuep = NULL; 62 } else { 63 optlen = p - s; 64 *valuep = ++p; 65 } 66 for (i = 0; tokens[i] != NULL; i++) { 67 if ((optlen == strlen(tokens[i])) && 68 (strncmp(s, tokens[i], optlen) == 0)) 69 return (i); 70 } 71 /* no match, point value at option and return error */ 72 *valuep = s; 73 return (-1); 74 } 75