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. |
Damien Miller | 329638e | 2003-06-03 12:12:50 +1000 | [diff] [blame^] | 13 | * 3. Neither the name of the University nor the names of its contributors |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 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 | |
Ben Lindstrom | dd21fe9 | 2002-06-27 18:23:20 +0000 | [diff] [blame] | 30 | #include "includes.h" |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 31 | #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET) |
| 32 | |
| 33 | #if defined(LIBC_SCCS) && !defined(lint) |
Damien Miller | 329638e | 2003-06-03 12:12:50 +1000 | [diff] [blame^] | 34 | static char *rcsid = "$OpenBSD: getopt.c,v 1.5 2003/06/02 20:18:37 millert Exp $"; |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 35 | #endif /* LIBC_SCCS and not lint */ |
| 36 | |
| 37 | #include <stdio.h> |
| 38 | #include <stdlib.h> |
| 39 | #include <string.h> |
| 40 | |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 41 | int BSDopterr = 1, /* if error message should be printed */ |
| 42 | BSDoptind = 1, /* index into parent argv vector */ |
| 43 | BSDoptopt, /* character checked for validity */ |
| 44 | BSDoptreset; /* reset getopt */ |
| 45 | char *BSDoptarg; /* argument associated with option */ |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 46 | |
| 47 | #define BADCH (int)'?' |
| 48 | #define BADARG (int)':' |
| 49 | #define EMSG "" |
| 50 | |
| 51 | /* |
| 52 | * getopt -- |
| 53 | * Parse argc/argv argument vector. |
| 54 | */ |
| 55 | int |
Tim Rice | a4f7ae1 | 2001-09-17 14:34:33 -0700 | [diff] [blame] | 56 | BSDgetopt(nargc, nargv, ostr) |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 57 | int nargc; |
| 58 | char * const *nargv; |
| 59 | const char *ostr; |
| 60 | { |
| 61 | extern char *__progname; |
| 62 | static char *place = EMSG; /* option letter processing */ |
| 63 | char *oli; /* option letter list index */ |
| 64 | |
Damien Miller | 13dd03a | 2003-01-08 11:16:48 +1100 | [diff] [blame] | 65 | if (ostr == NULL) |
| 66 | return (-1); |
| 67 | |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 68 | if (BSDoptreset || !*place) { /* update scanning pointer */ |
| 69 | BSDoptreset = 0; |
| 70 | if (BSDoptind >= nargc || *(place = nargv[BSDoptind]) != '-') { |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 71 | place = EMSG; |
| 72 | return (-1); |
| 73 | } |
| 74 | if (place[1] && *++place == '-') { /* found "--" */ |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 75 | ++BSDoptind; |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 76 | place = EMSG; |
| 77 | return (-1); |
| 78 | } |
| 79 | } /* option letter okay? */ |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 80 | if ((BSDoptopt = (int)*place++) == (int)':' || |
| 81 | !(oli = strchr(ostr, BSDoptopt))) { |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 82 | /* |
| 83 | * if the user didn't specify '-' as an option, |
| 84 | * assume it means -1. |
| 85 | */ |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 86 | if (BSDoptopt == (int)'-') |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 87 | return (-1); |
| 88 | if (!*place) |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 89 | ++BSDoptind; |
| 90 | if (BSDopterr && *ostr != ':') |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 91 | (void)fprintf(stderr, |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 92 | "%s: illegal option -- %c\n", __progname, BSDoptopt); |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 93 | return (BADCH); |
| 94 | } |
| 95 | if (*++oli != ':') { /* don't need argument */ |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 96 | BSDoptarg = NULL; |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 97 | if (!*place) |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 98 | ++BSDoptind; |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 99 | } |
| 100 | else { /* need an argument */ |
| 101 | if (*place) /* no white space */ |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 102 | BSDoptarg = place; |
| 103 | else if (nargc <= ++BSDoptind) { /* no arg */ |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 104 | place = EMSG; |
| 105 | if (*ostr == ':') |
| 106 | return (BADARG); |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 107 | if (BSDopterr) |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 108 | (void)fprintf(stderr, |
| 109 | "%s: option requires an argument -- %c\n", |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 110 | __progname, BSDoptopt); |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 111 | return (BADCH); |
| 112 | } |
| 113 | else /* white space */ |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 114 | BSDoptarg = nargv[BSDoptind]; |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 115 | place = EMSG; |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 116 | ++BSDoptind; |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 117 | } |
Ben Lindstrom | ee9ac35 | 2002-06-22 00:26:59 +0000 | [diff] [blame] | 118 | return (BSDoptopt); /* dump back option letter */ |
Damien Miller | 4f8e669 | 2001-07-14 13:22:53 +1000 | [diff] [blame] | 119 | } |
| 120 | |
| 121 | #endif /* !defined(HAVE_GETOPT) || !defined(HAVE_OPTRESET) */ |