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3c0ef626 | 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. | |
0fff78ff | 13 | * 3. Neither the name of the University nor the names of its contributors |
3c0ef626 | 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 | ||
41b2f314 | 30 | #include "includes.h" |
3c0ef626 | 31 | #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET) |
32 | ||
33 | #if defined(LIBC_SCCS) && !defined(lint) | |
0fff78ff | 34 | static char *rcsid = "$OpenBSD: getopt.c,v 1.5 2003/06/02 20:18:37 millert Exp $"; |
3c0ef626 | 35 | #endif /* LIBC_SCCS and not lint */ |
36 | ||
37 | #include <stdio.h> | |
38 | #include <stdlib.h> | |
39 | #include <string.h> | |
40 | ||
680cee3b | 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 */ | |
3c0ef626 | 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 | |
56 | BSDgetopt(nargc, nargv, ostr) | |
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 | ||
6a9b3198 | 65 | if (ostr == NULL) |
66 | return (-1); | |
67 | ||
680cee3b | 68 | if (BSDoptreset || !*place) { /* update scanning pointer */ |
69 | BSDoptreset = 0; | |
70 | if (BSDoptind >= nargc || *(place = nargv[BSDoptind]) != '-') { | |
3c0ef626 | 71 | place = EMSG; |
72 | return (-1); | |
73 | } | |
74 | if (place[1] && *++place == '-') { /* found "--" */ | |
680cee3b | 75 | ++BSDoptind; |
3c0ef626 | 76 | place = EMSG; |
77 | return (-1); | |
78 | } | |
79 | } /* option letter okay? */ | |
680cee3b | 80 | if ((BSDoptopt = (int)*place++) == (int)':' || |
81 | !(oli = strchr(ostr, BSDoptopt))) { | |
3c0ef626 | 82 | /* |
83 | * if the user didn't specify '-' as an option, | |
84 | * assume it means -1. | |
85 | */ | |
680cee3b | 86 | if (BSDoptopt == (int)'-') |
3c0ef626 | 87 | return (-1); |
88 | if (!*place) | |
680cee3b | 89 | ++BSDoptind; |
90 | if (BSDopterr && *ostr != ':') | |
3c0ef626 | 91 | (void)fprintf(stderr, |
680cee3b | 92 | "%s: illegal option -- %c\n", __progname, BSDoptopt); |
3c0ef626 | 93 | return (BADCH); |
94 | } | |
95 | if (*++oli != ':') { /* don't need argument */ | |
680cee3b | 96 | BSDoptarg = NULL; |
3c0ef626 | 97 | if (!*place) |
680cee3b | 98 | ++BSDoptind; |
3c0ef626 | 99 | } |
100 | else { /* need an argument */ | |
101 | if (*place) /* no white space */ | |
680cee3b | 102 | BSDoptarg = place; |
103 | else if (nargc <= ++BSDoptind) { /* no arg */ | |
3c0ef626 | 104 | place = EMSG; |
105 | if (*ostr == ':') | |
106 | return (BADARG); | |
680cee3b | 107 | if (BSDopterr) |
3c0ef626 | 108 | (void)fprintf(stderr, |
109 | "%s: option requires an argument -- %c\n", | |
680cee3b | 110 | __progname, BSDoptopt); |
3c0ef626 | 111 | return (BADCH); |
112 | } | |
113 | else /* white space */ | |
680cee3b | 114 | BSDoptarg = nargv[BSDoptind]; |
3c0ef626 | 115 | place = EMSG; |
680cee3b | 116 | ++BSDoptind; |
3c0ef626 | 117 | } |
680cee3b | 118 | return (BSDoptopt); /* dump back option letter */ |
3c0ef626 | 119 | } |
120 | ||
121 | #endif /* !defined(HAVE_GETOPT) || !defined(HAVE_OPTRESET) */ |