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comparison lwlib/lw_cmdline.h @ 4:a4812d57ed13

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Started implementing command line parsing in lwlib
author lost@l-w.ca
date Fri, 21 Jan 2011 22:54:48 -0700
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children 0e01d1343c02
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3:d4eb3c328a47 4:a4812d57ed13
1 /*
2 lw_cmdline.h
3
4 Copyright © 2010 William Astle
5
6 This file is part of LWTOOLS.
7
8 LWTOOLS is free software: you can redistribute it and/or modify it under the
9 terms of the GNU General Public License as published by the Free Software
10 Foundation, either version 3 of the License, or (at your option) any later
11 version.
12
13 This program is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 more details.
17
18 You should have received a copy of the GNU General Public License along with
19 this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 /*
23
24 This argument parser is patterned after argp from the gnu C library but
25 has much of the functionality removed. It is provided here because not
26 every system has glibc.
27
28 Most notably, it does not support option groups or i18n.
29
30 */
31
32 #ifndef ___lw_cmdline_h_seen___
33 #define ___lw_cmdline_h_seen___
34
35 struct lw_cmdline_options
36 {
37 char *name;
38 int key;
39 char *arg;
40 int flags;
41 char *doc;
42 };
43
44 enum
45 {
46 lw_cmdline_opt_optional = 1,
47 lw_cmdline_opt_hidden = 2,
48 lw_cmdline_opt_alias = 4,
49 lw_cmdline_opt_doc = 8,
50 lw_cmdline_opt_nousage = 0x10
51 };
52
53 enum
54 {
55 lw_cmdline_err_unknown = -1
56 };
57
58 enum
59 {
60 lw_cmdline_key_arg = -1,
61 lw_cmdline_key_end = 0
62 };
63
64 struct lw_cmdline_parser
65 {
66 struct lw_cmdline_options *options;
67 int (*parser)(int key, char *arg, void *input);
68 char *args_doc;
69 char *doc;
70 char *program_version;
71 };
72
73 #ifdef ___lw_cmdline_c_seen___
74
75 #else /* def ___lw_cmdline_c_seen___ */
76
77 extern int lw_cmdline_parse(struct lw_cmdline_parser *parser, int argc, char **argv, unsigned flags, int *arg_index, void *input);
78
79
80 #endif /* def ___lw_cmdline_c_seen___ */
81
82 #endif /* ___lw_cmdline_h_seen___ */