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Diffstat (limited to 'openbsd-compat/getopt.c')
-rw-r--r-- | openbsd-compat/getopt.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/openbsd-compat/getopt.c b/openbsd-compat/getopt.c new file mode 100644 index 000000000..071e27885 --- /dev/null +++ b/openbsd-compat/getopt.c | |||
@@ -0,0 +1,122 @@ | |||
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 | ||
60 | getopt(nargc, nargv, ostr) | ||
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) */ | ||