| Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 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. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | */ |
| 33 | |
| 34 | #include "config.h" |
| 35 | #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET) |
| 36 | |
| 37 | #if defined(LIBC_SCCS) && !defined(lint) |
| 38 | static char *rcsid = "$OpenBSD: getopt.c,v 1.2 1996/08/19 08:33:32 tholo Exp $"; |
| 39 | #endif /* LIBC_SCCS and not lint */ |
| 40 | |
| 41 | #include <stdio.h> |
| 42 | #include <stdlib.h> |
| 43 | #include <string.h> |
| 44 | |
| 45 | int opterr = 1, /* if error message should be printed */ |
| 46 | optind = 1, /* index into parent argv vector */ |
| 47 | optopt, /* character checked for validity */ |
| 48 | optreset; /* reset getopt */ |
| 49 | char *optarg; /* argument associated with option */ |
| 50 | |
| 51 | #define BADCH (int)'?' |
| 52 | #define BADARG (int)':' |
| 53 | #define EMSG "" |
| 54 | |
| 55 | /* |
| 56 | * getopt -- |
| 57 | * Parse argc/argv argument vector. |
| 58 | */ |
| 59 | int |
| Tim Rice | a4f7ae1 | 2001-09-17 14:34:33 -0700 | [diff] [blame] | 60 | BSDgetopt(nargc, nargv, ostr) |
| Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 61 | int nargc; |
| 62 | char * const *nargv; |
| 63 | const char *ostr; |
| 64 | { |
| 65 | extern char *__progname; |
| 66 | static char *place = EMSG; /* option letter processing */ |
| 67 | char *oli; /* option letter list index */ |
| 68 | |
| 69 | if (optreset || !*place) { /* update scanning pointer */ |
| 70 | optreset = 0; |
| 71 | if (optind >= nargc || *(place = nargv[optind]) != '-') { |
| 72 | place = EMSG; |
| 73 | return (-1); |
| 74 | } |
| 75 | if (place[1] && *++place == '-') { /* found "--" */ |
| 76 | ++optind; |
| 77 | place = EMSG; |
| 78 | return (-1); |
| 79 | } |
| 80 | } /* option letter okay? */ |
| 81 | if ((optopt = (int)*place++) == (int)':' || |
| 82 | !(oli = strchr(ostr, optopt))) { |
| 83 | /* |
| 84 | * if the user didn't specify '-' as an option, |
| 85 | * assume it means -1. |
| 86 | */ |
| 87 | if (optopt == (int)'-') |
| 88 | return (-1); |
| 89 | if (!*place) |
| 90 | ++optind; |
| 91 | if (opterr && *ostr != ':') |
| 92 | (void)fprintf(stderr, |
| 93 | "%s: illegal option -- %c\n", __progname, optopt); |
| 94 | return (BADCH); |
| 95 | } |
| 96 | if (*++oli != ':') { /* don't need argument */ |
| 97 | optarg = NULL; |
| 98 | if (!*place) |
| 99 | ++optind; |
| 100 | } |
| 101 | else { /* need an argument */ |
| 102 | if (*place) /* no white space */ |
| 103 | optarg = place; |
| 104 | else if (nargc <= ++optind) { /* no arg */ |
| 105 | place = EMSG; |
| 106 | if (*ostr == ':') |
| 107 | return (BADARG); |
| 108 | if (opterr) |
| 109 | (void)fprintf(stderr, |
| 110 | "%s: option requires an argument -- %c\n", |
| 111 | __progname, optopt); |
| 112 | return (BADCH); |
| 113 | } |
| 114 | else /* white space */ |
| 115 | optarg = nargv[optind]; |
| 116 | place = EMSG; |
| 117 | ++optind; |
| 118 | } |
| 119 | return (optopt); /* dump back option letter */ |
| 120 | } |
| 121 | |
| 122 | #endif /* !defined(HAVE_GETOPT) || !defined(HAVE_OPTRESET) */ |