* sysdeps/generic/strcpy_chk.c (__strcpy_chk): Speed up by checking
[glibc.git] / posix / getopt_int.h
blobd982c72d9ee9b162016fbdbccc5a54e9f57ae22c
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.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library 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 GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
19 02111-1307 USA. */
21 #ifndef _GETOPT_INT_H
22 #define _GETOPT_INT_H 1
24 extern int _getopt_internal (int ___argc, char *const *___argv,
25 const char *__shortopts,
26 const struct option *__longopts, int *__longind,
27 int __long_only);
30 /* Reentrant versions which can handle parsing multiple argument
31 vectors at the same time. */
33 /* Data type for reentrant functions. */
34 struct _getopt_data
36 /* These have exactly the same meaning as the corresponding global
37 variables, except that they are used for the reentrant
38 versions of getopt. */
39 int optind;
40 int opterr;
41 int optopt;
42 char *optarg;
44 /* Internal members. */
46 /* True if the internal members have been initialized. */
47 int __initialized;
49 /* The next char to be scanned in the option-element
50 in which the last option character we returned was found.
51 This allows us to pick up the scan where we left off.
53 If this is zero, or a null string, it means resume the scan
54 by advancing to the next ARGV-element. */
55 char *__nextchar;
57 /* Describe how to deal with options that follow non-option ARGV-elements.
59 If the caller did not specify anything,
60 the default is REQUIRE_ORDER if the environment variable
61 POSIXLY_CORRECT is defined, PERMUTE otherwise.
63 REQUIRE_ORDER means don't recognize them as options;
64 stop option processing when the first non-option is seen.
65 This is what Unix does.
66 This mode of operation is selected by either setting the environment
67 variable POSIXLY_CORRECT, or using `+' as the first character
68 of the list of option characters.
70 PERMUTE is the default. We permute the contents of ARGV as we
71 scan, so that eventually all the non-options are at the end.
72 This allows options to be given in any order, even with programs
73 that were not written to expect this.
75 RETURN_IN_ORDER is an option available to programs that were
76 written to expect options and other ARGV-elements in any order
77 and that care about the ordering of the two. We describe each
78 non-option ARGV-element as if it were the argument of an option
79 with character code 1. Using `-' as the first character of the
80 list of option characters selects this mode of operation.
82 The special argument `--' forces an end of option-scanning regardless
83 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
84 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
86 enum
88 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
89 } __ordering;
91 /* If the POSIXLY_CORRECT environment variable is set. */
92 int __posixly_correct;
95 /* Handle permutation of arguments. */
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. */
101 int __first_nonopt;
102 int __last_nonopt;
104 #if defined _LIBC && defined USE_NONOPTION_FLAGS
105 int __nonoption_flags_max_len;
106 int __nonoption_flags_len;
107 # endif
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 }
114 extern int _getopt_internal_r (int ___argc, char *const *___argv,
115 const char *__shortopts,
116 const struct option *__longopts, int *__longind,
117 int __long_only, struct _getopt_data *__data);
119 extern int _getopt_long_r (int ___argc, char *const *___argv,
120 const char *__shortopts,
121 const struct option *__longopts, int *__longind,
122 struct _getopt_data *__data);
124 extern int _getopt_long_only_r (int ___argc, char *const *___argv,
125 const char *__shortopts,
126 const struct option *__longopts,
127 int *__longind,
128 struct _getopt_data *__data);
130 #endif /* getopt_int.h */