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/* Declarations for getopt.
Copyright (C) 1989,90,91,92,93,94,96,97 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 2 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _TOOLS_GETOPT_H
#define _TOOLS_GETOPT_H
#define LONG_OPTS_SIZE_DEFAULT -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* tools_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 tools_optind;
/* Callers store zero here to inhibit the error message `getopt' prints
for unrecognized options. */
extern int tools_opterr;
/* Set to an option character which was unrecognized. */
extern int tools_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 tools_no_argument 0
#define tools_required_argument 1
#define tools_optional_argument 2
int tools_getopt(int argc, char* const* argv, const char* shortopts);
int
tools_getopt_long(int argc, char* const* argv, const char* shortopts, const struct option* longopts, int* longind);
int tools_getopt_long_only(int argc,
char* const* argv,
const char* shortopts,
const struct option* longopts,
int* longind,
int longOptSize);
#ifdef __cplusplus
}
#endif
#endif /* _TOOLS_GETOPT_H */
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