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8b40f521 JK |
1 | #ifndef __PERF_PARSE_OPTIONS_H |
2 | #define __PERF_PARSE_OPTIONS_H | |
07800601 IM |
3 | |
4 | enum parse_opt_type { | |
5 | /* special types */ | |
6 | OPTION_END, | |
7 | OPTION_ARGUMENT, | |
8 | OPTION_GROUP, | |
9 | /* options with no arguments */ | |
10 | OPTION_BIT, | |
c0555642 IM |
11 | OPTION_BOOLEAN, |
12 | OPTION_INCR, | |
07800601 IM |
13 | OPTION_SET_INT, |
14 | OPTION_SET_PTR, | |
15 | /* options with arguments (usually) */ | |
16 | OPTION_STRING, | |
17 | OPTION_INTEGER, | |
e61078a0 | 18 | OPTION_LONG, |
07800601 | 19 | OPTION_CALLBACK, |
6ba85cea | 20 | OPTION_U64, |
07800601 IM |
21 | }; |
22 | ||
23 | enum parse_opt_flags { | |
24 | PARSE_OPT_KEEP_DASHDASH = 1, | |
25 | PARSE_OPT_STOP_AT_NON_OPTION = 2, | |
26 | PARSE_OPT_KEEP_ARGV0 = 4, | |
27 | PARSE_OPT_KEEP_UNKNOWN = 8, | |
28 | PARSE_OPT_NO_INTERNAL_HELP = 16, | |
29 | }; | |
30 | ||
31 | enum parse_opt_option_flags { | |
32 | PARSE_OPT_OPTARG = 1, | |
33 | PARSE_OPT_NOARG = 2, | |
34 | PARSE_OPT_NONEG = 4, | |
35 | PARSE_OPT_HIDDEN = 8, | |
36 | PARSE_OPT_LASTARG_DEFAULT = 16, | |
37 | }; | |
38 | ||
39 | struct option; | |
40 | typedef int parse_opt_cb(const struct option *, const char *arg, int unset); | |
41 | ||
42 | /* | |
43 | * `type`:: | |
44 | * holds the type of the option, you must have an OPTION_END last in your | |
45 | * array. | |
46 | * | |
47 | * `short_name`:: | |
48 | * the character to use as a short option name, '\0' if none. | |
49 | * | |
50 | * `long_name`:: | |
51 | * the long option name, without the leading dashes, NULL if none. | |
52 | * | |
53 | * `value`:: | |
54 | * stores pointers to the values to be filled. | |
55 | * | |
56 | * `argh`:: | |
57 | * token to explain the kind of argument this option wants. Keep it | |
58 | * homogenous across the repository. | |
59 | * | |
60 | * `help`:: | |
61 | * the short help associated to what the option does. | |
62 | * Must never be NULL (except for OPTION_END). | |
63 | * OPTION_GROUP uses this pointer to store the group header. | |
64 | * | |
65 | * `flags`:: | |
66 | * mask of parse_opt_option_flags. | |
67 | * PARSE_OPT_OPTARG: says that the argument is optionnal (not for BOOLEANs) | |
68 | * PARSE_OPT_NOARG: says that this option takes no argument, for CALLBACKs | |
69 | * PARSE_OPT_NONEG: says that this option cannot be negated | |
70 | * PARSE_OPT_HIDDEN this option is skipped in the default usage, showed in | |
71 | * the long one. | |
72 | * | |
73 | * `callback`:: | |
74 | * pointer to the callback to use for OPTION_CALLBACK. | |
75 | * | |
76 | * `defval`:: | |
77 | * default value to fill (*->value) with for PARSE_OPT_OPTARG. | |
78 | * OPTION_{BIT,SET_INT,SET_PTR} store the {mask,integer,pointer} to put in | |
79 | * the value when met. | |
80 | * CALLBACKS can use it like they want. | |
81 | */ | |
82 | struct option { | |
83 | enum parse_opt_type type; | |
84 | int short_name; | |
85 | const char *long_name; | |
86 | void *value; | |
87 | const char *argh; | |
88 | const char *help; | |
89 | ||
90 | int flags; | |
91 | parse_opt_cb *callback; | |
92 | intptr_t defval; | |
93 | }; | |
94 | ||
f37a291c IM |
95 | #define OPT_END() { .type = OPTION_END } |
96 | #define OPT_ARGUMENT(l, h) { .type = OPTION_ARGUMENT, .long_name = (l), .help = (h) } | |
97 | #define OPT_GROUP(h) { .type = OPTION_GROUP, .help = (h) } | |
98 | #define OPT_BIT(s, l, v, h, b) { .type = OPTION_BIT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (b) } | |
99 | #define OPT_BOOLEAN(s, l, v, h) { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } | |
c0555642 | 100 | #define OPT_INCR(s, l, v, h) { .type = OPTION_INCR, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } |
f37a291c IM |
101 | #define OPT_SET_INT(s, l, v, h, i) { .type = OPTION_SET_INT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (i) } |
102 | #define OPT_SET_PTR(s, l, v, h, p) { .type = OPTION_SET_PTR, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (p) } | |
103 | #define OPT_INTEGER(s, l, v, h) { .type = OPTION_INTEGER, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } | |
104 | #define OPT_LONG(s, l, v, h) { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } | |
6ba85cea | 105 | #define OPT_U64(s, l, v, h) { .type = OPTION_U64, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } |
f37a291c | 106 | #define OPT_STRING(s, l, v, a, h) { .type = OPTION_STRING, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h) } |
07800601 | 107 | #define OPT_DATE(s, l, v, h) \ |
f37a291c | 108 | { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb } |
07800601 | 109 | #define OPT_CALLBACK(s, l, v, a, h, f) \ |
f37a291c | 110 | { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f) } |
a79d7db9 AV |
111 | #define OPT_CALLBACK_NOOPT(s, l, v, a, h, f) \ |
112 | { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .flags = PARSE_OPT_NOARG } | |
5a4b1817 FW |
113 | #define OPT_CALLBACK_DEFAULT(s, l, v, a, h, f, d) \ |
114 | { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h), .callback = (f), .defval = (intptr_t)d, .flags = PARSE_OPT_LASTARG_DEFAULT } | |
07800601 IM |
115 | |
116 | /* parse_options() will filter out the processed options and leave the | |
117 | * non-option argments in argv[]. | |
118 | * Returns the number of arguments left in argv[]. | |
119 | */ | |
120 | extern int parse_options(int argc, const char **argv, | |
121 | const struct option *options, | |
122 | const char * const usagestr[], int flags); | |
123 | ||
124 | extern NORETURN void usage_with_options(const char * const *usagestr, | |
125 | const struct option *options); | |
126 | ||
127 | /*----- incremantal advanced APIs -----*/ | |
128 | ||
129 | enum { | |
130 | PARSE_OPT_HELP = -1, | |
131 | PARSE_OPT_DONE, | |
132 | PARSE_OPT_UNKNOWN, | |
133 | }; | |
134 | ||
135 | /* | |
136 | * It's okay for the caller to consume argv/argc in the usual way. | |
137 | * Other fields of that structure are private to parse-options and should not | |
138 | * be modified in any way. | |
139 | */ | |
140 | struct parse_opt_ctx_t { | |
141 | const char **argv; | |
142 | const char **out; | |
143 | int argc, cpidx; | |
144 | const char *opt; | |
145 | int flags; | |
146 | }; | |
147 | ||
148 | extern int parse_options_usage(const char * const *usagestr, | |
149 | const struct option *opts); | |
150 | ||
151 | extern void parse_options_start(struct parse_opt_ctx_t *ctx, | |
152 | int argc, const char **argv, int flags); | |
153 | ||
154 | extern int parse_options_step(struct parse_opt_ctx_t *ctx, | |
155 | const struct option *options, | |
156 | const char * const usagestr[]); | |
157 | ||
158 | extern int parse_options_end(struct parse_opt_ctx_t *ctx); | |
159 | ||
160 | ||
161 | /*----- some often used options -----*/ | |
162 | extern int parse_opt_abbrev_cb(const struct option *, const char *, int); | |
163 | extern int parse_opt_approxidate_cb(const struct option *, const char *, int); | |
164 | extern int parse_opt_verbosity_cb(const struct option *, const char *, int); | |
165 | ||
166 | #define OPT__VERBOSE(var) OPT_BOOLEAN('v', "verbose", (var), "be verbose") | |
167 | #define OPT__QUIET(var) OPT_BOOLEAN('q', "quiet", (var), "be quiet") | |
168 | #define OPT__VERBOSITY(var) \ | |
169 | { OPTION_CALLBACK, 'v', "verbose", (var), NULL, "be more verbose", \ | |
170 | PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }, \ | |
171 | { OPTION_CALLBACK, 'q', "quiet", (var), NULL, "be more quiet", \ | |
172 | PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 } | |
173 | #define OPT__DRY_RUN(var) OPT_BOOLEAN('n', "dry-run", (var), "dry run") | |
174 | #define OPT__ABBREV(var) \ | |
175 | { OPTION_CALLBACK, 0, "abbrev", (var), "n", \ | |
176 | "use <n> digits to display SHA-1s", \ | |
177 | PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 } | |
178 | ||
179 | extern const char *parse_options_fix_filename(const char *prefix, const char *file); | |
180 | ||
8b40f521 | 181 | #endif /* __PERF_PARSE_OPTIONS_H */ |