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+/* Internal declarations for getopt.
+ Copyright (C) 1989-2020 Free Software Foundation, Inc.
+
+ This file is part of the GNU C Library.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+#ifndef _GETOPT_INT_H
+#define _GETOPT_INT_H 1
+
+extern int _getopt_internal (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ int __long_only, int __posixly_correct);
+
+
+/* Reentrant versions which can handle parsing multiple argument
+ vectors at the same time. */
+
+/* Data type for reentrant functions. */
+struct _getopt_data
+{
+ /* These have exactly the same meaning as the corresponding global
+ variables, except that they are used for the reentrant
+ versions of getopt. */
+ int optind;
+ int opterr;
+ int optopt;
+ char *optarg;
+
+ /* Internal members. */
+
+ /* True if the internal members have been initialized. */
+ int __initialized;
+
+ /* The next char to be scanned in the option-element
+ in which the last option character we returned was found.
+ This allows us to pick up the scan where we left off.
+
+ If this is zero, or a null string, it means resume the scan
+ by advancing to the next ARGV-element. */
+ char *__nextchar;
+
+ /* Describe how to deal with options that follow non-option ARGV-elements.
+
+ If the caller did not specify anything,
+ the default is REQUIRE_ORDER if the environment variable
+ POSIXLY_CORRECT is defined, PERMUTE otherwise.
+
+ REQUIRE_ORDER means don't recognize them as options;
+ stop option processing when the first non-option is seen.
+ This is what Unix does.
+ This mode of operation is selected by either setting the environment
+ variable POSIXLY_CORRECT, or using '+' as the first character
+ of the list of option characters, or by calling getopt.
+
+ PERMUTE is the default. We permute the contents of ARGV as we
+ scan, so that eventually all the non-options are at the end.
+ This allows options to be given in any order, even with programs
+ that were not written to expect this.
+
+ RETURN_IN_ORDER is an option available to programs that were
+ written to expect options and other ARGV-elements in any order
+ and that care about the ordering of the two. We describe each
+ non-option ARGV-element as if it were the argument of an option
+ with character code 1. Using '-' as the first character of the
+ list of option characters selects this mode of operation.
+
+ The special argument '--' forces an end of option-scanning regardless
+ of the value of 'ordering'. In the case of RETURN_IN_ORDER, only
+ '--' can cause 'getopt' to return -1 with 'optind' != ARGC. */
+
+ enum
+ {
+ REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
+ } __ordering;
+
+ /* If the POSIXLY_CORRECT environment variable is set
+ or getopt was called. */
+ int __posixly_correct;
+
+
+ /* Handle permutation of arguments. */
+
+ /* Describe the part of ARGV that contains non-options that have
+ been skipped. 'first_nonopt' is the index in ARGV of the first
+ of them; 'last_nonopt' is the index after the last of them. */
+
+ int __first_nonopt;
+ int __last_nonopt;
+
+#if defined _LIBC && defined USE_NONOPTION_FLAGS
+ int __nonoption_flags_max_len;
+ int __nonoption_flags_len;
+# endif
+};
+
+/* The initializer is necessary to set OPTIND and OPTERR to their
+ default values and to clear the initialization flag. */
+#define _GETOPT_DATA_INITIALIZER { 1, 1 }
+
+extern int _getopt_internal_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ int __long_only, int __posixly_correct,
+ struct _getopt_data *__data);
+
+extern int _getopt_long_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts, int *__longind,
+ struct _getopt_data *__data);
+
+extern int _getopt_long_only_r (int ___argc, char **___argv,
+ const char *__shortopts,
+ const struct option *__longopts,
+ int *__longind,
+ struct _getopt_data *__data);
+
+#endif /* getopt_int.h */