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1/* Internal declarations for getopt.
2 Copyright (C) 1989-1994,1996-1999,2001,2003,2004
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License along
17 with this program; if not, write to the Free Software Foundation,
18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
19
20#ifndef _GETOPT_INT_H
21#define _GETOPT_INT_H 1
22
23extern int _getopt_internal (int ___argc, char **___argv,
24 const char *__shortopts,
25 const struct option *__longopts, int *__longind,
26 int __long_only, int __posixly_correct);
27
28
29/* Reentrant versions which can handle parsing multiple argument
30 vectors at the same time. */
31
32/* Data type for reentrant functions. */
33struct _getopt_data
34{
35 /* These have exactly the same meaning as the corresponding global
36 variables, except that they are used for the reentrant
37 versions of getopt. */
38 int optind;
39 int opterr;
40 int optopt;
41 char *optarg;
42
43 /* Internal members. */
44
45 /* True if the internal members have been initialized. */
46 int __initialized;
47
48 /* The next char to be scanned in the option-element
49 in which the last option character we returned was found.
50 This allows us to pick up the scan where we left off.
51
52 If this is zero, or a null string, it means resume the scan
53 by advancing to the next ARGV-element. */
54 char *__nextchar;
55
56 /* Describe how to deal with options that follow non-option ARGV-elements.
57
58 If the caller did not specify anything,
59 the default is REQUIRE_ORDER if the environment variable
60 POSIXLY_CORRECT is defined, PERMUTE otherwise.
61
62 REQUIRE_ORDER means don't recognize them as options;
63 stop option processing when the first non-option is seen.
64 This is what Unix does.
65 This mode of operation is selected by either setting the environment
66 variable POSIXLY_CORRECT, or using `+' as the first character
67 of the list of option characters, or by calling getopt.
68
69 PERMUTE is the default. We permute the contents of ARGV as we
70 scan, so that eventually all the non-options are at the end.
71 This allows options to be given in any order, even with programs
72 that were not written to expect this.
73
74 RETURN_IN_ORDER is an option available to programs that were
75 written to expect options and other ARGV-elements in any order
76 and that care about the ordering of the two. We describe each
77 non-option ARGV-element as if it were the argument of an option
78 with character code 1. Using `-' as the first character of the
79 list of option characters selects this mode of operation.
80
81 The special argument `--' forces an end of option-scanning regardless
82 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
83 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
84
85 enum
86 {
87 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
88 } __ordering;
89
90 /* If the POSIXLY_CORRECT environment variable is set
91 or getopt was called. */
92 int __posixly_correct;
93
94
95 /* Handle permutation of arguments. */
96
97 /* Describe the part of ARGV that contains non-options that have
98 been skipped. `first_nonopt' is the index in ARGV of the first
99 of them; `last_nonopt' is the index after the last of them. */
100
101 int __first_nonopt;
102 int __last_nonopt;
103
104#if defined _LIBC && defined USE_NONOPTION_FLAGS
105 int __nonoption_flags_max_len;
106 int __nonoption_flags_len;
107# endif
108};
109
110/* The initializer is necessary to set OPTIND and OPTERR to their
111 default values and to clear the initialization flag. */
112#define _GETOPT_DATA_INITIALIZER { 1, 1 }
113
114extern int _getopt_internal_r (int ___argc, char **___argv,
115 const char *__shortopts,
116 const struct option *__longopts, int *__longind,
117 int __long_only, int __posixly_correct,
118 struct _getopt_data *__data);
119
120extern int _getopt_long_r (int ___argc, char **___argv,
121 const char *__shortopts,
122 const struct option *__longopts, int *__longind,
123 struct _getopt_data *__data);
124
125extern int _getopt_long_only_r (int ___argc, char **___argv,
126 const char *__shortopts,
127 const struct option *__longopts,
128 int *__longind,
129 struct _getopt_data *__data);
130
131#endif /* getopt_int.h */