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0545caaa | 1 | /* |
bde978a6 | 2 | * Copyright (C) 1996-2015 The Squid Software Foundation and contributors |
0545caaa AJ |
3 | * |
4 | * Squid software is distributed under GPLv2+ license and includes | |
5 | * contributions from numerous individuals and organizations. | |
6 | * Please see the COPYING and CONTRIBUTORS files for details. | |
7 | */ | |
75072239 | 8 | |
63b81f13 GS |
9 | /* |
10 | * Copyright (c) 1987, 1993, 1994 | |
11 | * The Regents of the University of California. All rights reserved. | |
12 | * | |
13 | * Redistribution and use in source and binary forms, with or without | |
14 | * modification, are permitted provided that the following conditions | |
15 | * are met: | |
16 | * 1. Redistributions of source code must retain the above copyright | |
17 | * notice, this list of conditions and the following disclaimer. | |
18 | * 2. Redistributions in binary form must reproduce the above copyright | |
19 | * notice, this list of conditions and the following disclaimer in the | |
20 | * documentation and/or other materials provided with the distribution. | |
21 | * 3. Neither the name of the University nor the names of its contributors | |
22 | * may be used to endorse or promote products derived from this software | |
23 | * without specific prior written permission. | |
24 | * | |
25 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
29 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
30 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
31 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
32 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
33 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
34 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
35 | * SUCH DAMAGE. | |
36 | */ | |
37 | ||
0545caaa AJ |
38 | #include "squid.h" |
39 | ||
63b81f13 GS |
40 | #if defined(LIBC_SCCS) && !defined(lint) |
41 | static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95"; | |
42 | #endif /* LIBC_SCCS and not lint */ | |
43 | ||
63b81f13 GS |
44 | #include <stdlib.h> |
45 | #include <string.h> | |
46 | ||
f53969cc SM |
47 | int opterr = 1, /* if error message should be printed */ |
48 | optind = 1, /* index into parent argv vector */ | |
49 | optopt, /* character checked for validity */ | |
50 | optreset; /* reset getopt */ | |
51 | char *optarg; /* argument associated with option */ | |
63b81f13 | 52 | |
f53969cc SM |
53 | #define BADCH (int)'?' |
54 | #define BADARG (int)':' | |
55 | #define EMSG (char*)"" | |
63b81f13 GS |
56 | |
57 | /* | |
58 | * getopt -- | |
59 | * Parse argc/argv argument vector. | |
60 | */ | |
61 | int | |
62 | getopt(nargc, nargv, ostr) | |
26ac0430 AJ |
63 | int nargc; |
64 | char *const *nargv; | |
65 | const char *ostr; | |
63b81f13 | 66 | { |
f53969cc SM |
67 | static char *place = EMSG; /* option letter processing */ |
68 | char *oli; /* option letter list index */ | |
63b81f13 | 69 | |
f53969cc | 70 | if (optreset || !*place) { /* update scanning pointer */ |
26ac0430 AJ |
71 | optreset = 0; |
72 | if (optind >= nargc || *(place = nargv[optind]) != '-') { | |
73 | place = EMSG; | |
74 | return (-1); | |
75 | } | |
f53969cc | 76 | if (place[1] && *++place == '-') { /* found "--" */ |
26ac0430 AJ |
77 | ++optind; |
78 | place = EMSG; | |
79 | return (-1); | |
80 | } | |
f53969cc | 81 | } /* option letter okay? */ |
63b81f13 | 82 | if ((optopt = (int) *place++) == (int) ':' || |
26ac0430 AJ |
83 | !(oli = strchr(ostr, optopt))) { |
84 | /* | |
85 | * if the user didn't specify '-' as an option, | |
86 | * assume it means -1. | |
87 | */ | |
88 | if (optopt == (int) '-') | |
89 | return (-1); | |
90 | if (!*place) | |
91 | ++optind; | |
92 | if (opterr && *ostr != ':') | |
93 | (void) fprintf(stderr, | |
94 | "%s: illegal option -- %c\n", __FILE__, optopt); | |
95 | return (BADCH); | |
63b81f13 | 96 | } |
f53969cc | 97 | if (*++oli != ':') { /* don't need argument */ |
26ac0430 AJ |
98 | optarg = NULL; |
99 | if (!*place) | |
100 | ++optind; | |
f53969cc SM |
101 | } else { /* need an argument */ |
102 | if (*place) /* no white space */ | |
26ac0430 | 103 | optarg = place; |
f53969cc | 104 | else if (nargc <= ++optind) { /* no arg */ |
26ac0430 AJ |
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 | __FILE__, optopt); | |
112 | return (BADCH); | |
f53969cc | 113 | } else /* white space */ |
26ac0430 AJ |
114 | optarg = nargv[optind]; |
115 | place = EMSG; | |
116 | ++optind; | |
63b81f13 | 117 | } |
f53969cc | 118 | return (optopt); /* dump back option letter */ |
63b81f13 | 119 | } |
f53969cc | 120 |