2b8e7624d67b5796d9e1b38cf65700c5471b98ff
1 #ifndef PARSE_OPTIONS_H
2 #define PARSE_OPTIONS_H
4 enum parse_opt_type {
5 OPTION_END,
6 OPTION_GROUP,
7 OPTION_BOOLEAN,
8 OPTION_STRING,
9 OPTION_INTEGER,
10 OPTION_CALLBACK,
11 };
13 enum parse_opt_flags {
14 PARSE_OPT_KEEP_DASHDASH = 1,
15 };
17 enum parse_opt_option_flags {
18 PARSE_OPT_OPTARG = 1,
19 };
21 struct option;
22 typedef int parse_opt_cb(const struct option *, const char *arg, int unset);
24 struct option {
25 enum parse_opt_type type;
26 int short_name;
27 const char *long_name;
28 void *value;
29 const char *argh;
30 const char *help;
32 int flags;
33 parse_opt_cb *callback;
34 /* holds default value for PARSE_OPT_OPTARG,
35 though callbacks can use it like they want */
36 intptr_t defval;
37 };
39 #define OPT_END() { OPTION_END }
40 #define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
41 #define OPT_BOOLEAN(s, l, v, h) { OPTION_BOOLEAN, (s), (l), (v), NULL, (h) }
42 #define OPT_INTEGER(s, l, v, h) { OPTION_INTEGER, (s), (l), (v), NULL, (h) }
43 #define OPT_STRING(s, l, v, a, h) { OPTION_STRING, (s), (l), (v), (a), (h) }
44 #define OPT_CALLBACK(s, l, v, a, h, f) \
45 { OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) }
47 /* parse_options() will filter out the processed options and leave the
48 * non-option argments in argv[].
49 * Returns the number of arguments left in argv[].
50 */
51 extern int parse_options(int argc, const char **argv,
52 const struct option *options,
53 const char * const usagestr[], int flags);
55 extern NORETURN void usage_with_options(const char * const *usagestr,
56 const struct option *options);
58 #endif