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[/] [openrisc/] [trunk/] [or1ksim/] [argtable2/] [getopt.h] - Blame information for rev 753

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1 19 jeremybenn
/* Declarations for getopt.
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   Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.  Its master source is NOT part of
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   the C library, however.  The master source lives in /gd/gnu/lib.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Library General Public License as
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   published by the Free Software Foundation; either version 2 of the
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   License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Library General Public License for more details.
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   You should have received a copy of the GNU Library General Public
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   License along with the GNU C Library; see the file COPYING.LIB.  If not,
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   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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#ifndef _GETOPT_H
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#define _GETOPT_H 1
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#ifdef  __cplusplus
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extern "C"
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{
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#endif
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/* For communication from `getopt' to the caller.
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   When `getopt' finds an option that takes an argument,
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   the argument value is returned here.
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   Also, when `ordering' is RETURN_IN_ORDER,
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   each non-option ARGV-element is returned here.  */
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        extern char *optarg;
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/* Index in ARGV of the next element to be scanned.
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   This is used for communication to and from the caller
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   and for communication between successive calls to `getopt'.
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   On entry to `getopt', zero means this is the first call; initialize.
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   When `getopt' returns -1, this is the index of the first of the
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   non-option elements that the caller should itself scan.
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   Otherwise, `optind' communicates from one call to the next
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   how much of ARGV has been scanned so far.  */
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        extern int optind;
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/* Callers store zero here to inhibit the error message `getopt' prints
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   for unrecognized options.  */
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        extern int opterr;
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/* Set to an option character which was unrecognized.  */
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        extern int optopt;
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/* Describe the long-named options requested by the application.
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   The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
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   of `struct option' terminated by an element containing a name which is
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   zero.
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   The field `has_arg' is:
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   no_argument          (or 0) if the option does not take an argument,
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   required_argument    (or 1) if the option requires an argument,
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   optional_argument    (or 2) if the option takes an optional argument.
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   If the field `flag' is not NULL, it points to a variable that is set
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   to the value given in the field `val' when the option is found, but
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   left unchanged if the option is not found.
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   To have a long-named option do something other than set an `int' to
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   a compiled-in constant, such as set a value from `optarg', set the
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   option's `flag' field to zero and its `val' field to a nonzero
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   value (the equivalent single-letter option character, if there is
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   one).  For long options that have a zero `flag' field, `getopt'
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   returns the contents of the `val' field.  */
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        struct option
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        {
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#if defined (__STDC__) && __STDC__
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                const char *name;
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#else
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                char *name;
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#endif
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                /* has_arg can't be an enum because some compilers complain about
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                   type mismatches in all the code that assumes it is an int.  */
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                int has_arg;
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                int *flag;
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                int val;
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        };
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/* Names for the values of the `has_arg' field of `struct option'.  */
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#define no_argument             0
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#define required_argument       1
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#define optional_argument       2
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#if defined (__STDC__) && __STDC__
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#ifdef __GNU_LIBRARY__
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/* Many other libraries have conflicting prototypes for getopt, with
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   differences in the consts, in stdlib.h.  To avoid compilation
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   errors, only prototype getopt for the GNU C library.  */
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        extern int getopt(int argc, char *const *argv, const char *shortopts);
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#else                           /* not __GNU_LIBRARY__ */
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        extern int getopt();
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#endif                          /* __GNU_LIBRARY__ */
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        extern int getopt_long(int argc, char *const *argv, const char *shortopts,
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                               const struct option *longopts, int *longind);
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        extern int getopt_long_only(int argc, char *const *argv,
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                                    const char *shortopts,
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                               const struct option *longopts, int *longind);
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/* Internal only.  Users should not call this directly.  */
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        extern int _getopt_internal(int argc, char *const *argv,
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                                    const char *shortopts,
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                                const struct option *longopts, int *longind,
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                                    int long_only);
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#else                           /* not __STDC__ */
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        extern int getopt();
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        extern int getopt_long();
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        extern int getopt_long_only();
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        extern int _getopt_internal();
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#endif                          /* __STDC__ */
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#ifdef  __cplusplus
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}
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#endif
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#endif                          /* _GETOPT_H */

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