/* Declarations for getopt.
Copyright (C) 1989,90,91,92,93,94,96,97,98 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 3 of the
License, or (at your option) any later version.
The GNU C Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* For communication from `getopt' to the caller.
When `getopt' finds an option that takes an argument,
the argument value is returned here.
Also, when `ordering' is RETURN_IN_ORDER,
each non-option ARGV-element is returned here. */
/* Index in ARGV of the next element to be scanned.
This is used for communication to and from the caller
and for communication between successive calls to `getopt'.
On entry to `getopt', zero means this is the first call; initialize.
When `getopt' returns -1, this is the index of the first of the
non-option elements that the caller should itself scan.
Otherwise, `optind' communicates from one call to the next
how much of ARGV has been scanned so far. */
/* Callers store zero here to inhibit the error message `getopt' prints
for unrecognized options. */
/* Set to an option character which was unrecognized. */
/* Describe the long-named options requested by the application.
The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
of `struct option' terminated by an element containing a name which is
no_argument (or 0) if the option does not take an argument,
required_argument (or 1) if the option requires an argument,
optional_argument (or 2) if the option takes an optional argument.
If the field `flag' is not NULL, it points to a variable that is set
to the value given in the field `val' when the option is found, but
left unchanged if the option is not found.
To have a long-named option do something other than set an `int' to
a compiled-in constant, such as set a value from `optarg', set the
option's `flag' field to zero and its `val' field to a nonzero
value (the equivalent single-letter option character, if there is
one). For long options that have a zero `flag' field, `getopt'
returns the contents of the `val' field. */
# if defined __STDC__ && __STDC__
/* has_arg can't be an enum because some compilers complain about
type mismatches in all the code that assumes it is an int. */
/* Names for the values of the `has_arg' field of `struct option'. */
# define required_argument 1
# define optional_argument 2
/* Get definitions and prototypes for functions to process the
arguments in ARGV (ARGC of them, minus the program name) for
Return the option character from OPTS just read. Return -1 when
there are no more options. For unrecognized options, or options
missing arguments, `optopt' is set to the option letter, and '?' is
The OPTS string is a list of characters which are recognized option
letters, optionally followed by colons, specifying that that letter
takes an argument, to be placed in `optarg'.
If a letter in OPTS is followed by two colons, its argument is
optional. This behavior is specific to the GNU `getopt'.
The argument `--' causes premature termination of argument
scanning, explicitly telling `getopt' that there are no more
If OPTS begins with `--', then non-option arguments are treated as
arguments to the option '\0'. This behavior is specific to the GNU
#if defined __STDC__ && __STDC__
/* Many other libraries have conflicting prototypes for getopt, with
differences in the consts, in stdlib.h. To avoid compilation
errors, only prototype getopt for the GNU C library. */
extern int gg_getopt (int argc
, char *const *argv
, const char *shortopts
);
# else /* not __GNU_LIBRARY__ */
extern int gg_getopt (int argc
, char *const *argv
, const char *shortopts
);
# endif /* __GNU_LIBRARY__ */
extern int gg_getopt_long (int argc
, char *const *argv
, const char *shortopts
,
const struct gg_option
*longopts
, int *longind
);
extern int gg_getopt_long_only (int argc
, char *const *argv
,
const struct gg_option
*longopts
, int *longind
);
/* Internal only. Users should not call this directly. */
extern int _getopt_internal (int argc
, char *const *argv
,
const struct gg_option
*longopts
, int *longind
,
extern int gg_getopt_long ();
extern int gg_getopt_long_only ();
extern int _getopt_internal ();
/* Make sure we later can get all the definitions and declarations. */