: /* Declarations for getopt.

:    Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.

: 

:    NOTE: The canonical source of this file is maintained with the GNU C Library.

:    Bugs can be reported to bug-glibc@gnu.org.

: 

:    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 2, 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, write to the Free Software

:    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,

:    USA.  */

: 

: #ifndef _GETOPT_H

: #define _GETOPT_H 1

: 

: #ifdef	__cplusplus

: extern "C" {

: #endif

: 

: /* 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.  */

: 

: extern char *optarg;

: 

: /* 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.  */

: 

: extern int optind;

: 

: /* Callers store zero here to inhibit the error message `getopt' prints

:    for unrecognized options.  */

: 

: extern int opterr;

: 

: /* Set to an option character which was unrecognized.  */

: 

: extern int optopt;

: 

: /* 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

:    zero.

: 

:    The field `has_arg' 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.  */

: 

: struct option

: {

: #if defined (__STDC__) && __STDC__

:   const char *name;

: #else

:   char *name;

: #endif

:   /* has_arg can't be an enum because some compilers complain about

:      type mismatches in all the code that assumes it is an int.  */

:   int has_arg;

:   int *flag;

:   int val;

: };

: 

: /* Names for the values of the `has_arg' field of `struct option'.  */

: 

: #define	no_argument		0

: #define required_argument	1

: #define optional_argument	2

: 

: #if defined (__STDC__) && __STDC__

: #ifdef __GNU_LIBRARY__

: /* 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 getopt (int argc, char *const *argv, const char *shortopts);

: #else /* not __GNU_LIBRARY__ */

: extern int getopt ();

: #endif /* __GNU_LIBRARY__ */

: extern int getopt_long (int argc, char *const *argv, const char *shortopts,

: 		        const struct option *longopts, int *longind);

: extern int getopt_long_only (int argc, char *const *argv,

: 			     const char *shortopts,

: 		             const struct option *longopts, int *longind);

: 

: /* Internal only.  Users should not call this directly.  */

: extern int _getopt_internal (int argc, char *const *argv,

: 			     const char *shortopts,

: 		             const struct option *longopts, int *longind,

: 			     int long_only);

: #else /* not __STDC__ */

: extern int getopt ();

: extern int getopt_long ();

: extern int getopt_long_only ();

: 

: extern int _getopt_internal ();

: #endif /* __STDC__ */

: 

: #ifdef	__cplusplus

: }

: #endif

: 

: #endif /* getopt.h */