1*4d9fdb46SRobert Mustacchi /* $NetBSD: getopt.c,v 1.1 2009/03/22 22:33:13 joerg Exp $*/
2*4d9fdb46SRobert Mustacchi /*  Modified by David Anderson to work with GNU/Linux and freebsd.
3*4d9fdb46SRobert Mustacchi     Added {} for clarity.
4*4d9fdb46SRobert Mustacchi     Switched to standard dwarfdump formatting.
5*4d9fdb46SRobert Mustacchi     Treatment of : modified so that :: gets dwoptarg NULL
6*4d9fdb46SRobert Mustacchi     if space follows the letter
7*4d9fdb46SRobert Mustacchi     (the dwoptarg is set to null).
8*4d9fdb46SRobert Mustacchi */
9*4d9fdb46SRobert Mustacchi /*
10*4d9fdb46SRobert Mustacchi * Copyright (c) 1987, 1993, 1994
11*4d9fdb46SRobert Mustacchi * The Regents of the University of California.  All rights reserved.
12*4d9fdb46SRobert Mustacchi *
13*4d9fdb46SRobert Mustacchi * Redistribution and use in source and binary forms, with or without
14*4d9fdb46SRobert Mustacchi * modification, are permitted provided that the following conditions
15*4d9fdb46SRobert Mustacchi * are met:
16*4d9fdb46SRobert Mustacchi * 1. Redistributions of source code must retain the above copyright
17*4d9fdb46SRobert Mustacchi *    notice, this list of conditions and the following disclaimer.
18*4d9fdb46SRobert Mustacchi * 2. Redistributions in binary form must reproduce the above copyright
19*4d9fdb46SRobert Mustacchi *    notice, this list of conditions and the following disclaimer in the
20*4d9fdb46SRobert Mustacchi *    documentation and/or other materials provided with the distribution.
21*4d9fdb46SRobert Mustacchi * 3. Neither the name of the University nor the names of its contributors
22*4d9fdb46SRobert Mustacchi *    may be used to endorse or promote products derived from this software
23*4d9fdb46SRobert Mustacchi *    without specific prior written permission.
24*4d9fdb46SRobert Mustacchi *
25*4d9fdb46SRobert Mustacchi * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26*4d9fdb46SRobert Mustacchi * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27*4d9fdb46SRobert Mustacchi * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28*4d9fdb46SRobert Mustacchi * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29*4d9fdb46SRobert Mustacchi * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30*4d9fdb46SRobert Mustacchi * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31*4d9fdb46SRobert Mustacchi * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32*4d9fdb46SRobert Mustacchi * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33*4d9fdb46SRobert Mustacchi * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34*4d9fdb46SRobert Mustacchi * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35*4d9fdb46SRobert Mustacchi * SUCH DAMAGE.
36*4d9fdb46SRobert Mustacchi */
37*4d9fdb46SRobert Mustacchi 
38*4d9fdb46SRobert Mustacchi #ifdef __cplusplus
39*4d9fdb46SRobert Mustacchi extern "C" {
40*4d9fdb46SRobert Mustacchi #endif /* __cplusplus */
41*4d9fdb46SRobert Mustacchi extern int  dwopterr;
42*4d9fdb46SRobert Mustacchi extern int  dwoptind;
43*4d9fdb46SRobert Mustacchi extern int  dwoptopt;
44*4d9fdb46SRobert Mustacchi extern int  dwoptreset;
45*4d9fdb46SRobert Mustacchi extern char *dwoptarg;
46*4d9fdb46SRobert Mustacchi 
47*4d9fdb46SRobert Mustacchi int dwgetopt(int nargc, char * const nargv[], const char *ostr);
48*4d9fdb46SRobert Mustacchi 
49*4d9fdb46SRobert Mustacchi /*  As of October 2017 it seems adviseable to allow
50*4d9fdb46SRobert Mustacchi     long option names.  So based on a reading of
51*4d9fdb46SRobert Mustacchi     'man 3 getopt' we reimplement a portion of GNU getopt_long().
52*4d9fdb46SRobert Mustacchi     It's a wonderfully sensible design and all the credit
53*4d9fdb46SRobert Mustacchi     should go to the original designers.
54*4d9fdb46SRobert Mustacchi     We are not implementing all the features of GNU/Linux
55*4d9fdb46SRobert Mustacchi     getopt_long(), just the features we wish to use.
56*4d9fdb46SRobert Mustacchi     Specifically, we require val be 0 and flag
57*4d9fdb46SRobert Mustacchi     be NULL and ignore those fields.
58*4d9fdb46SRobert Mustacchi     We do not implement GNU digit_optind at all.
59*4d9fdb46SRobert Mustacchi     Within these restrictions the interface behaves the same
60*4d9fdb46SRobert Mustacchi     as GNU getopt_long() (or so it appears from the
61*4d9fdb46SRobert Mustacchi     getopt documentation:
62*4d9fdb46SRobert Mustacchi     release 4.04 of the Linux man-pages project,
63*4d9fdb46SRobert Mustacchi     GETOPT(3),
64*4d9fdb46SRobert Mustacchi     http://www.kernel.org/doc/man-pages/).
65*4d9fdb46SRobert Mustacchi     */
66*4d9fdb46SRobert Mustacchi 
67*4d9fdb46SRobert Mustacchi struct dwoption {
68*4d9fdb46SRobert Mustacchi     const char *name;
69*4d9fdb46SRobert Mustacchi     int has_arg;
70*4d9fdb46SRobert Mustacchi     int *flag;
71*4d9fdb46SRobert Mustacchi     int val;
72*4d9fdb46SRobert Mustacchi };
73*4d9fdb46SRobert Mustacchi #define dwno_argument 0
74*4d9fdb46SRobert Mustacchi #define dwrequired_argument 1
75*4d9fdb46SRobert Mustacchi #define dwoptional_argument 2
76*4d9fdb46SRobert Mustacchi 
77*4d9fdb46SRobert Mustacchi int dwgetopt_long(int nargc, char *const nargv[],
78*4d9fdb46SRobert Mustacchi     const char *ostr,
79*4d9fdb46SRobert Mustacchi     const struct dwoption* longopts,
80*4d9fdb46SRobert Mustacchi     int *longindex);
81*4d9fdb46SRobert Mustacchi 
82*4d9fdb46SRobert Mustacchi 
83*4d9fdb46SRobert Mustacchi #ifdef __cplusplus
84*4d9fdb46SRobert Mustacchi }
85*4d9fdb46SRobert Mustacchi #endif /* __cplusplus */
86