| 1 | /* Declarations for getopt.
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| 2 | Copyright (C) 1989-1994, 1996-1999, 2001 Free Software Foundation, Inc.
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| 3 | This file is part of the GNU C Library.
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| 4 |
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| 5 | This program is free software; you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation; either version 2, or (at your option)
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| 8 | any later version.
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| 9 |
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| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program; if not, write to the Free Software Foundation,
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| 17 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 18 |
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| 19 | #ifndef _GETOPT_H
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| 20 |
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| 21 | #ifndef __need_getopt
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| 22 | # define _GETOPT_H 1
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| 23 | #endif
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| 24 |
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| 25 | /* If __GNU_LIBRARY__ is not already defined, either we are being used
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| 26 | standalone, or this is the first header included in the source file.
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| 27 | If we are being used with glibc, we need to include <features.h>, but
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| 28 | that does not exist if we are standalone. So: if __GNU_LIBRARY__ is
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| 29 | not defined, include <ctype.h>, which will pull in <features.h> for us
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| 30 | if it's from glibc. (Why ctype.h? It's guaranteed to exist and it
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| 31 | doesn't flood the namespace with stuff the way some other headers do.) */
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| 32 | #if !defined __GNU_LIBRARY__
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| 33 | # include <ctype.h>
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| 34 | #endif
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| 35 |
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| 36 | #ifdef __cplusplus
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| 37 | extern "C" {
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| 38 | #endif
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| 39 |
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| 40 | /* For communication from `getopt' to the caller.
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| 41 | When `getopt' finds an option that takes an argument,
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| 42 | the argument value is returned here.
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| 43 | Also, when `ordering' is RETURN_IN_ORDER,
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| 44 | each non-option ARGV-element is returned here. */
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| 45 |
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| 46 | extern char *optarg;
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| 47 |
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| 48 | /* Index in ARGV of the next element to be scanned.
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| 49 | This is used for communication to and from the caller
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| 50 | and for communication between successive calls to `getopt'.
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| 51 |
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| 52 | On entry to `getopt', zero means this is the first call; initialize.
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| 53 |
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| 54 | When `getopt' returns -1, this is the index of the first of the
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| 55 | non-option elements that the caller should itself scan.
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| 56 |
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| 57 | Otherwise, `optind' communicates from one call to the next
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| 58 | how much of ARGV has been scanned so far. */
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| 59 |
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| 60 | extern int optind;
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| 61 |
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| 62 | /* Callers store zero here to inhibit the error message `getopt' prints
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| 63 | for unrecognized options. */
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| 64 |
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| 65 | extern int opterr;
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| 66 |
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| 67 | /* Set to an option character which was unrecognized. */
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| 68 |
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