1 /* 2 * Copyright (c) 1987, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* OPENBSD ORIGINAL: lib/libc/stdlib/getopt.c */ 31 32 #include "includes.h" 33 #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET) 34 35 #if defined(LIBC_SCCS) && !defined(lint) 36 static char *rcsid = "$OpenBSD: getopt.c,v 1.5 2003/06/02 20:18:37 millert Exp $"; 37 #endif /* LIBC_SCCS and not lint */ 38 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 43 int BSDopterr = 1, /* if error message should be printed */ 44 BSDoptind = 1, /* index into parent argv vector */ 45 BSDoptopt, /* character checked for validity */ 46 BSDoptreset; /* reset getopt */ 47 char *BSDoptarg; /* argument associated with option */ 48 49 #define BADCH (int)'?' 50 #define BADARG (int)':' 51 #define EMSG "" 52 53 /* 54 * getopt -- 55 * Parse argc/argv argument vector. 56 */ 57 int 58 BSDgetopt(nargc, nargv, ostr) 59 int nargc; 60 char * const *nargv; 61 const char *ostr; 62 { 63 extern char *__progname; 64 static char *place = EMSG; /* option letter processing */ 65 char *oli; /* option letter list index */ 66 67 if (ostr == NULL) 68 return (-1); 69 70 if (BSDoptreset || !*place) { /* update scanning pointer */ 71 BSDoptreset = 0; 72 if (BSDoptind >= nargc || *(place = nargv[BSDoptind]) != '-') { 73 place = EMSG; 74 return (-1); 75 } 76 if (place[1] && *++place == '-') { /* found "--" */ 77 ++BSDoptind; 78 place = EMSG; 79 return (-1); 80 } 81 } /* option letter okay? */ 82 if ((BSDoptopt = (int)*place++) == (int)':' || 83 !(oli = strchr(ostr, BSDoptopt))) { 84 /* 85 * if the user didn't specify '-' as an option, 86 * assume it means -1. 87 */ 88 if (BSDoptopt == (int)'-') 89 return (-1); 90 if (!*place) 91 ++BSDoptind; 92 if (BSDopterr && *ostr != ':') 93 (void)fprintf(stderr, 94 "%s: illegal option -- %c\n", __progname, BSDoptopt); 95 return (BADCH); 96 } 97 if (*++oli != ':') { /* don't need argument */ 98 BSDoptarg = NULL; 99 if (!*place) 100 ++BSDoptind; 101 } 102 else { /* need an argument */ 103 if (*place) /* no white space */ 104 BSDoptarg = place; 105 else if (nargc <= ++BSDoptind) { /* no arg */ 106 place = EMSG; 107 if (*ostr == ':') 108 return (BADARG); 109 if (BSDopterr) 110 (void)fprintf(stderr, 111 "%s: option requires an argument -- %c\n", 112 __progname, BSDoptopt); 113 return (BADCH); 114 } 115 else /* white space */ 116 BSDoptarg = nargv[BSDoptind]; 117 place = EMSG; 118 ++BSDoptind; 119 } 120 return (BSDoptopt); /* dump back option letter */ 121 } 122 123 #endif /* !defined(HAVE_GETOPT) || !defined(HAVE_OPTRESET) */ 124
