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/* Declarations for getopt.
Copyright 2008, 2010 Karl Berry.
Copyright 1989,90,91,92,93,94,96,97,2000,05 Free Software Foundation, Inc.
The original version of this file was part of the GNU C Library.
Its master source is NOT part of the C library, however.
The master source lives in libc.
This version has been modified for use with libkpathsea.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, see <http://www.gnu.org/licenses/>. */
#ifndef _GETOPT_H
#define _GETOPT_H 1
#if defined (WIN32) && !defined (__MINGW32__) && !defined (NO_KPSE_DLL)
#define KPSE_DLL 1
#endif /* WIN32 && !__MINGW32__ && !NO_KPSE_DLL */
#if defined (KPSE_DLL) && (defined (WIN32) || defined (__CYGWIN__))
#ifdef MAKE_KPSE_DLL
#define KPSEDLL __declspec(dllexport)
#else /* ! MAKE_KPSE_DLL */
#define KPSEDLL __declspec(dllimport)
#endif
#else /* ! (KPSE_DLL && (WIN32 || __CYGWIN__)) */
#define KPSEDLL
#endif
#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 KPSEDLL 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 KPSEDLL int optind;
/* Callers store zero here to inhibit the error message `getopt' prints
for unrecognized options. */
extern KPSEDLL int opterr;
/* Set to an option character which was unrecognized. */
extern KPSEDLL 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
{
const char *name;
/* 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 KPSEDLL int getopt (int argc, char *const *argv, const char *shortopts);
#endif /* __GNU_LIBRARY__ */
extern KPSEDLL int getopt_long (int argc, char *const *argv, const char *shortopts,
const struct option *longopts, int *longind);
extern KPSEDLL int getopt_long_only (int argc, char *const *argv,
const char *shortopts,
const struct option *longopts, int *longind);
#if defined (MAKE_KPSE_DLL) || defined (NO_KPSE_DLL) /* libkpathsea internal only */
/* 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);
#endif /* MAKE_KPSE_DLL || NO_KPSE_DLL */
#else /* not __STDC__ */
extern KPSEDLL int getopt_long ();
extern KPSEDLL int getopt_long_only ();
#if defined (MAKE_KPSE_DLL) || defined (NO_KPSE_DLL) /* libkpathsea internal only */
extern int _getopt_internal ();
#endif /* MAKE_KPSE_DLL || NO_KPSE_DLL */
#endif /* __STDC__ */
#ifdef __cplusplus
}
#endif
#endif /* _GETOPT_H */
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