vbagx/source/vba/getopt.h

/* Declarations for getopt.
   Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 2000
   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__
    /* HAVE_DECL_* is a three-state macro: undefined, 0 or 1.  If it is
       undefined, we haven't run the autoconf check so provide the
       declaration without arguments.  If it is 0, we checked and failed
       to find the declaration so provide a fully prototyped one.  If it
       is 1, we found it so don't provide any declaration at all.  */
#if defined (__GNU_LIBRARY__) || (defined (HAVE_DECL_GETOPT) && !HAVE_DECL_GETOPT)
    /* 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__ */
# if !defined (HAVE_DECL_GETOPT)
    extern int getopt ();
# endif
#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 */