xref: /freebsd/contrib/bc/include/opt.h (revision 32100375a661c1e16588ddfa7b90ca8d26cb9786)
1 /*
2  * *****************************************************************************
3  *
4  * Copyright (c) 2018-2020 Gavin D. Howard and contributors.
5  *
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions are met:
10  *
11  * * Redistributions of source code must retain the above copyright notice, this
12  *   list of conditions and the following disclaimer.
13  *
14  * * Redistributions in binary form must reproduce the above copyright notice,
15  *   this list of conditions and the following disclaimer in the documentation
16  *   and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28  * POSSIBILITY OF SUCH DAMAGE.
29  *
30  * *****************************************************************************
31  *
32  * Adapted from https://github.com/skeeto/optparse
33  *
34  * *****************************************************************************
35  *
36  * Definitions for getopt_long() replacement.
37  *
38  */
39 
40 #ifndef BC_OPT_H
41 #define BC_OPT_H
42 
43 #include <stdbool.h>
44 
45 typedef struct BcOpt {
46 	char **argv;
47 	size_t optind;
48 	int optopt;
49 	int subopt;
50 	char *optarg;
51 } BcOpt;
52 
53 typedef enum BcOptType {
54 	BC_OPT_NONE,
55 	BC_OPT_REQUIRED,
56 	BC_OPT_BC_ONLY,
57 	BC_OPT_DC_ONLY,
58 } BcOptType;
59 
60 typedef struct BcOptLong {
61 	const char *name;
62 	BcOptType type;
63 	int val;
64 } BcOptLong;
65 
66 void bc_opt_init(BcOpt *o, char **argv);
67 
68 int bc_opt_parse(BcOpt *o, const BcOptLong *longopts);
69 
70 #define BC_OPT_ISDASHDASH(a) \
71 	((a) != NULL && (a)[0] == '-' && (a)[1] == '-' && (a)[2] == '\0')
72 
73 #define BC_OPT_ISSHORTOPT(a) \
74 	((a) != NULL && (a)[0] == '-' && (a)[1] != '-' && (a)[1] != '\0')
75 
76 #define BC_OPT_ISLONGOPT(a) \
77 	((a) != NULL && (a)[0] == '-' && (a)[1] == '-' && (a)[2] != '\0')
78 
79 #endif // BC_OPT_H
80