1 /* declarations for getopt
2 Copyright (C) 1989 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 1, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
18 /* For communication from `getopt' to the caller.
19 When `getopt' finds an option that takes an argument,
20 the argument value is returned here.
21 Also, when `ordering' is RETURN_IN_ORDER,
22 each non-option ARGV-element is returned here. */
26 /* Index in ARGV of the next element to be scanned.
27 This is used for communication to and from the caller
28 and for communication between successive calls to `getopt'.
30 On entry to `getopt', zero means this is the first call; initialize.
32 When `getopt' returns EOF, this is the index of the first of the
33 non-option elements that the caller should itself scan.
35 Otherwise, `optind' communicates from one call to the next
36 how much of ARGV has been scanned so far. */
40 /* Callers store zero here to inhibit the error message `getopt' prints
41 for unrecognized options. */
45 /* Describe the long-named options requested by the application.
46 _GETOPT_LONG_OPTIONS is a vector of `struct option' terminated by an
47 element containing a name which is zero.
48 The field `has_arg' is:
49 0 if the option does not take an argument,
50 1 if the option requires an argument,
51 2 if the option takes an optional argument.
52 If the field `flag' is nonzero, it points to a variable that is set to
53 the value given in the field `val' when the option is found, but
54 left unchanged if the option is not found. */
64 extern struct option
*_getopt_long_options
;
66 /* Name of long-named option actually found.
67 Only changed when a long-named option is found. */
69 extern char *_getopt_option_name
;
71 /* The index in GETOPT_LONG_OPTIONS of the long-named option found.
72 Only valid when a long-named option has been found by the most
73 recent call to `getopt'. */
75 extern int option_index
;
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