| 1 | /* Declarations for getopt.
|
|---|
| 2 | Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 2000
|
|---|
| 3 | Free Software Foundation, Inc.
|
|---|
| 4 |
|
|---|
| 5 | NOTE: The canonical source of this file is maintained with the GNU C Library.
|
|---|
| 6 | Bugs can be reported to [email protected].
|
|---|
| 7 |
|
|---|
| 8 | This program is free software; you can redistribute it and/or modify it
|
|---|
| 9 | under the terms of the GNU General Public License as published by the
|
|---|
| 10 | Free Software Foundation; either version 2, or (at your option) any
|
|---|
| 11 | later version.
|
|---|
| 12 |
|
|---|
| 13 | This program is distributed in the hope that it will be useful,
|
|---|
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 16 | GNU General Public License for more details.
|
|---|
| 17 |
|
|---|
| 18 | You should have received a copy of the GNU General Public License
|
|---|
| 19 | along with this program; if not, write to the Free Software
|
|---|
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
|
|---|
| 21 | USA. */
|
|---|
| 22 |
|
|---|
| 23 | #ifndef _GETOPT_H
|
|---|
| 24 | #define _GETOPT_H 1
|
|---|
| 25 |
|
|---|
| 26 | #ifdef __cplusplus
|
|---|
| 27 | extern "C" {
|
|---|
| 28 | #endif
|
|---|
| 29 |
|
|---|
| 30 | /* For communication from `getopt' to the caller.
|
|---|
| 31 | When `getopt' finds an option that takes an argument,
|
|---|
| 32 | the argument value is returned here.
|
|---|
| 33 | Also, when `ordering' is RETURN_IN_ORDER,
|
|---|
| 34 | each non-option ARGV-element is returned here. */
|
|---|
| 35 |
|
|---|
| 36 | extern char *optarg;
|
|---|
| 37 |
|
|---|
| 38 | /* Index in ARGV of the next element to be scanned.
|
|---|
| 39 | This is used for communication to and from the caller
|
|---|
| 40 | and for communication between successive calls to `getopt'.
|
|---|
| 41 |
|
|---|
| 42 | On entry to `getopt', zero means this is the first call; initialize.
|
|---|
| 43 |
|
|---|
| 44 | When `getopt' returns -1, this is the index of the first of the
|
|---|
| 45 | non-option elements that the caller should itself scan.
|
|---|
| 46 |
|
|---|
| 47 | Otherwise, `optind' communicates from one call to the next
|
|---|
| 48 | how much of ARGV has been scanned so far. */
|
|---|
| 49 |
|
|---|
| 50 | extern int optind;
|
|---|
| 51 |
|
|---|
| 52 | /* Callers store zero here to inhibit the error message `getopt' prints
|
|---|
| 53 | for unrecognized options. */
|
|---|
| 54 |
|
|---|
| 55 | extern int opterr;
|
|---|
| 56 |
|
|---|
| 57 | /* Set to an option character which was unrecognized. */
|
|---|
| 58 |
|
|---|
| 59 | extern int optopt;
|
|---|
| 60 |
|
|---|
| 61 | /* Describe the long-named options requested by the application.
|
|---|
| 62 | The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
|
|---|
| 63 | of `struct option' terminated by an element containing a name which is
|
|---|
| 64 | zero.
|
|---|
| 65 |
|
|---|
| 66 | The field `has_arg' is:
|
|---|
| 67 | no_argument (or 0) if the option does not take an argument,
|
|---|
| 68 | required_argument (or 1) if the option requires an argument,
|
|---|
| 69 | optional_argument (or 2) if the option takes an optional argument.
|
|---|
| 70 |
|
|---|
| 71 | If the field `flag' is not NULL, it points to a variable that is set
|
|---|
| 72 | to the value given in the field `val' when the option is found, but
|
|---|
| 73 | left unchanged if the option is not found.
|
|---|
|
|---|
