/* declarations for getopt
Copyright (C) 1989, 1990 Free Software Foundation, Inc.
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 1, 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., 675 Mass Ave, Cambridge, MA 02139, 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. */
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 EOF, 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;
/* Describe the long-named options requested by the application.
_GETOPT_LONG_OPTIONS is a vector of `struct option' terminated by an
element containing a name which is zero.
The field `has_arg' is:
0 if the option does not take an argument,
1 if the option requires an argument,
2 if the option takes an optional argument.
If the field `flag' is nonzero, 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
{
char *name;
int has_arg;
int *flag;
int val;
};
/* If nonzero, '-' can introduce long-named options.
Set by getopt_long_only. */
extern int _getopt_long_only;
/* The index in GETOPT_LONG_OPTIONS of the long-named option found.
Only valid when a long-named option has been found by the most
recent call to `getopt'. */
extern int option_index;
#ifdef __STDC__
int getopt (int argc, char **argv, const char *shortopts);
int getopt_long (int argc, char **argv, const char *shortopts,
const struct option *longopts, int *longind);
int getopt_long_only (int argc, char **argv, const char *shortopts,
const struct option *longopts, int *longind);
void envopt(int *pargc, char ***pargv, char *optstr);
#else
int getopt ();
int getopt_long ();
int getopt_long_only ();
void envopt();
#endif
