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4a59fd13 PH |
1 | #ifndef PARSE_OPTIONS_H |
2 | #define PARSE_OPTIONS_H | |
3 | ||
7db03054 HW |
4 | /** |
5 | * Refer to Documentation/technical/api-parse-options.txt for the API doc. | |
6 | */ | |
7 | ||
4a59fd13 | 8 | enum parse_opt_type { |
db7244bd | 9 | /* special types */ |
4a59fd13 | 10 | OPTION_END, |
580d5bff | 11 | OPTION_ARGUMENT, |
d7a38c54 | 12 | OPTION_GROUP, |
e0319ff5 | 13 | OPTION_NUMBER, |
5c387428 | 14 | OPTION_ALIAS, |
db7244bd PH |
15 | /* options with no arguments */ |
16 | OPTION_BIT, | |
2f4b97f9 | 17 | OPTION_NEGBIT, |
f62470c6 | 18 | OPTION_BITOP, |
b04ba2bb | 19 | OPTION_COUNTUP, |
db7244bd | 20 | OPTION_SET_INT, |
db7244bd | 21 | /* options with arguments (usually) */ |
4a59fd13 PH |
22 | OPTION_STRING, |
23 | OPTION_INTEGER, | |
2a514ed8 | 24 | OPTION_MAGNITUDE, |
ffe659f9 | 25 | OPTION_CALLBACK, |
b0b3a8b6 | 26 | OPTION_LOWLEVEL_CALLBACK, |
df217ed6 | 27 | OPTION_FILENAME |
4a59fd13 PH |
28 | }; |
29 | ||
30 | enum parse_opt_flags { | |
0171dbcb AH |
31 | PARSE_OPT_KEEP_DASHDASH = 1 << 0, |
32 | PARSE_OPT_STOP_AT_NON_OPTION = 1 << 1, | |
33 | PARSE_OPT_KEEP_ARGV0 = 1 << 2, | |
34 | PARSE_OPT_KEEP_UNKNOWN = 1 << 3, | |
35 | PARSE_OPT_NO_INTERNAL_HELP = 1 << 4, | |
36 | PARSE_OPT_ONE_SHOT = 1 << 5, | |
4a59fd13 PH |
37 | }; |
38 | ||
ffe659f9 | 39 | enum parse_opt_option_flags { |
0171dbcb AH |
40 | PARSE_OPT_OPTARG = 1 << 0, |
41 | PARSE_OPT_NOARG = 1 << 1, | |
42 | PARSE_OPT_NONEG = 1 << 2, | |
43 | PARSE_OPT_HIDDEN = 1 << 3, | |
44 | PARSE_OPT_LASTARG_DEFAULT = 1 << 4, | |
45 | PARSE_OPT_NODASH = 1 << 5, | |
46 | PARSE_OPT_LITERAL_ARGHELP = 1 << 6, | |
64cc539f | 47 | PARSE_OPT_FROM_ALIAS = 1 << 7, |
0171dbcb AH |
48 | PARSE_OPT_SHELL_EVAL = 1 << 8, |
49 | PARSE_OPT_NOCOMPLETE = 1 << 9, | |
50 | PARSE_OPT_COMP_ARG = 1 << 10, | |
51 | PARSE_OPT_CMDMODE = 1 << 11, | |
ffe659f9 PH |
52 | }; |
53 | ||
19800bdc RS |
54 | enum parse_opt_result { |
55 | PARSE_OPT_COMPLETE = -3, | |
56 | PARSE_OPT_HELP = -2, | |
57 | PARSE_OPT_ERROR = -1, /* must be the same as error() */ | |
58 | PARSE_OPT_DONE = 0, /* fixed so that "return 0" works */ | |
59 | PARSE_OPT_NON_OPTION, | |
60 | PARSE_OPT_UNKNOWN | |
61 | }; | |
62 | ||
ffe659f9 PH |
63 | struct option; |
64 | typedef int parse_opt_cb(const struct option *, const char *arg, int unset); | |
65 | ||
b0b3a8b6 | 66 | struct parse_opt_ctx_t; |
f41179f1 | 67 | typedef enum parse_opt_result parse_opt_ll_cb(struct parse_opt_ctx_t *ctx, |
3ebbe289 NTND |
68 | const struct option *opt, |
69 | const char *arg, int unset); | |
b0b3a8b6 | 70 | |
9b3beb58 PH |
71 | /* |
72 | * `type`:: | |
73 | * holds the type of the option, you must have an OPTION_END last in your | |
74 | * array. | |
75 | * | |
76 | * `short_name`:: | |
77 | * the character to use as a short option name, '\0' if none. | |
78 | * | |
79 | * `long_name`:: | |
80 | * the long option name, without the leading dashes, NULL if none. | |
81 | * | |
82 | * `value`:: | |
83 | * stores pointers to the values to be filled. | |
84 | * | |
85 | * `argh`:: | |
4ca7994b JH |
86 | * token to explain the kind of argument this option wants. Does not |
87 | * begin in capital letter, and does not end with a full stop. | |
88 | * Should be wrapped by N_() for translation. | |
9b3beb58 PH |
89 | * |
90 | * `help`:: | |
91 | * the short help associated to what the option does. | |
92 | * Must never be NULL (except for OPTION_END). | |
93 | * OPTION_GROUP uses this pointer to store the group header. | |
54e6dc7d | 94 | * Should be wrapped by N_() for translation. |
9b3beb58 PH |
95 | * |
96 | * `flags`:: | |
97 | * mask of parse_opt_option_flags. | |
3ea3c215 | 98 | * PARSE_OPT_OPTARG: says that the argument is optional (not for BOOLEANs) |
ef45e4da | 99 | * PARSE_OPT_NOARG: says that this option does not take an argument |
db7244bd | 100 | * PARSE_OPT_NONEG: says that this option cannot be negated |
51a9949e RS |
101 | * PARSE_OPT_HIDDEN: this option is skipped in the default usage, and |
102 | * shown only in the full usage. | |
e169b974 SB |
103 | * PARSE_OPT_LASTARG_DEFAULT: says that this option will take the default |
104 | * value if no argument is given when the option | |
105 | * is last on the command line. If the option is | |
106 | * not last it will require an argument. | |
107 | * Should not be used with PARSE_OPT_OPTARG. | |
51a9949e | 108 | * PARSE_OPT_NODASH: this option doesn't start with a dash. |
29f25d49 SB |
109 | * PARSE_OPT_LITERAL_ARGHELP: says that argh shouldn't be enclosed in brackets |
110 | * (i.e. '<argh>') in the help message. | |
111 | * Useful for options with multiple parameters. | |
b9d7f4b4 NTND |
112 | * PARSE_OPT_NOCOMPLETE: by default all visible options are completable |
113 | * by git-completion.bash. This option suppresses that. | |
ebc4a04e NTND |
114 | * PARSE_OPT_COMP_ARG: this option forces to git-completion.bash to |
115 | * complete an option as --name= not --name even if | |
116 | * the option takes optional argument. | |
9b3beb58 PH |
117 | * |
118 | * `callback`:: | |
bf3ff338 | 119 | * pointer to the callback to use for OPTION_CALLBACK |
9b3beb58 PH |
120 | * |
121 | * `defval`:: | |
122 | * default value to fill (*->value) with for PARSE_OPT_OPTARG. | |
d3c08114 | 123 | * OPTION_{BIT,SET_INT} store the {mask,integer} to put in the value when met. |
9b3beb58 | 124 | * CALLBACKS can use it like they want. |
bf3ff338 NTND |
125 | * |
126 | * `ll_callback`:: | |
127 | * pointer to the callback to use for OPTION_LOWLEVEL_CALLBACK | |
128 | * | |
9b3beb58 | 129 | */ |
4a59fd13 PH |
130 | struct option { |
131 | enum parse_opt_type type; | |
132 | int short_name; | |
133 | const char *long_name; | |
134 | void *value; | |
d7a38c54 PH |
135 | const char *argh; |
136 | const char *help; | |
ffe659f9 PH |
137 | |
138 | int flags; | |
139 | parse_opt_cb *callback; | |
ffe659f9 | 140 | intptr_t defval; |
bf3ff338 | 141 | parse_opt_ll_cb *ll_callback; |
f62470c6 | 142 | intptr_t extra; |
4a59fd13 PH |
143 | }; |
144 | ||
2de37349 NTND |
145 | #define OPT_BIT_F(s, l, v, h, b, f) { OPTION_BIT, (s), (l), (v), NULL, (h), \ |
146 | PARSE_OPT_NOARG|(f), NULL, (b) } | |
147 | #define OPT_COUNTUP_F(s, l, v, h, f) { OPTION_COUNTUP, (s), (l), (v), NULL, \ | |
148 | (h), PARSE_OPT_NOARG|(f) } | |
149 | #define OPT_SET_INT_F(s, l, v, h, i, f) { OPTION_SET_INT, (s), (l), (v), NULL, \ | |
150 | (h), PARSE_OPT_NOARG | (f), NULL, (i) } | |
151 | #define OPT_BOOL_F(s, l, v, h, f) OPT_SET_INT_F(s, l, v, h, 1, f) | |
d473e2e0 NTND |
152 | #define OPT_CALLBACK_F(s, l, v, a, h, f, cb) \ |
153 | { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), (cb) } | |
31fba9d3 | 154 | #define OPT_STRING_F(s, l, v, a, h, f) { OPTION_STRING, (s), (l), (v), (a), (h), (f) } |
16ed6c97 | 155 | #define OPT_INTEGER_F(s, l, v, h, f) { OPTION_INTEGER, (s), (l), (v), N_("n"), (h), (f) } |
2de37349 | 156 | |
4a59fd13 | 157 | #define OPT_END() { OPTION_END } |
1a85b49b JS |
158 | #define OPT_ARGUMENT(l, v, h) { OPTION_ARGUMENT, 0, (l), (v), NULL, \ |
159 | (h), PARSE_OPT_NOARG, NULL, 1 } | |
d7a38c54 | 160 | #define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) } |
2de37349 | 161 | #define OPT_BIT(s, l, v, h, b) OPT_BIT_F(s, l, v, h, b, 0) |
f62470c6 NTND |
162 | #define OPT_BITOP(s, l, v, h, set, clear) { OPTION_BITOP, (s), (l), (v), NULL, (h), \ |
163 | PARSE_OPT_NOARG|PARSE_OPT_NONEG, NULL, \ | |
bf3ff338 | 164 | (set), NULL, (clear) } |
34aec9f5 SB |
165 | #define OPT_NEGBIT(s, l, v, h, b) { OPTION_NEGBIT, (s), (l), (v), NULL, \ |
166 | (h), PARSE_OPT_NOARG, NULL, (b) } | |
2de37349 NTND |
167 | #define OPT_COUNTUP(s, l, v, h) OPT_COUNTUP_F(s, l, v, h, 0) |
168 | #define OPT_SET_INT(s, l, v, h, i) OPT_SET_INT_F(s, l, v, h, i, 0) | |
169 | #define OPT_BOOL(s, l, v, h) OPT_BOOL_F(s, l, v, h, 0) | |
4741edd5 SB |
170 | #define OPT_HIDDEN_BOOL(s, l, v, h) { OPTION_SET_INT, (s), (l), (v), NULL, \ |
171 | (h), PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1} | |
bc8620b4 PB |
172 | #define OPT_CMDMODE(s, l, v, h, i) { OPTION_SET_INT, (s), (l), (v), NULL, \ |
173 | (h), PARSE_OPT_CMDMODE|PARSE_OPT_NOARG|PARSE_OPT_NONEG, NULL, (i) } | |
16ed6c97 | 174 | #define OPT_INTEGER(s, l, v, h) OPT_INTEGER_F(s, l, v, h, 0) |
2a514ed8 CB |
175 | #define OPT_MAGNITUDE(s, l, v, h) { OPTION_MAGNITUDE, (s), (l), (v), \ |
176 | N_("n"), (h), PARSE_OPT_NONEG } | |
31fba9d3 | 177 | #define OPT_STRING(s, l, v, a, h) OPT_STRING_F(s, l, v, a, h, 0) |
c8ba1639 JK |
178 | #define OPT_STRING_LIST(s, l, v, a, h) \ |
179 | { OPTION_CALLBACK, (s), (l), (v), (a), \ | |
180 | (h), 0, &parse_opt_string_list } | |
b475e442 NTND |
181 | #define OPT_UYN(s, l, v, h) { OPTION_CALLBACK, (s), (l), (v), NULL, \ |
182 | (h), PARSE_OPT_NOARG, &parse_opt_tertiary } | |
27ec394a | 183 | #define OPT_EXPIRY_DATE(s, l, v, h) \ |
e703d711 | 184 | { OPTION_CALLBACK, (s), (l), (v), N_("expiry-date"),(h), 0, \ |
27ec394a | 185 | parse_opt_expiry_date_cb } |
d473e2e0 | 186 | #define OPT_CALLBACK(s, l, v, a, h, f) OPT_CALLBACK_F(s, l, v, a, h, 0, f) |
e0319ff5 RS |
187 | #define OPT_NUMBER_CALLBACK(v, h, f) \ |
188 | { OPTION_NUMBER, 0, NULL, (v), NULL, (h), \ | |
189 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, (f) } | |
df217ed6 | 190 | #define OPT_FILENAME(s, l, v, h) { OPTION_FILENAME, (s), (l), (v), \ |
54e6dc7d | 191 | N_("file"), (h) } |
73e9da01 | 192 | #define OPT_COLOR_FLAG(s, l, v, h) \ |
54e6dc7d | 193 | { OPTION_CALLBACK, (s), (l), (v), N_("when"), (h), PARSE_OPT_OPTARG, \ |
73e9da01 ML |
194 | parse_opt_color_flag_cb, (intptr_t)"always" } |
195 | ||
6acec038 RS |
196 | #define OPT_NOOP_NOARG(s, l) \ |
197 | { OPTION_CALLBACK, (s), (l), NULL, NULL, \ | |
54e6dc7d | 198 | N_("no-op (backward compatibility)"), \ |
6acec038 RS |
199 | PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, parse_opt_noop_cb } |
200 | ||
5c387428 NTND |
201 | #define OPT_ALIAS(s, l, source_long_name) \ |
202 | { OPTION_ALIAS, (s), (l), (source_long_name) } | |
203 | ||
202fbb33 NTND |
204 | /* |
205 | * parse_options() will filter out the processed options and leave the | |
206 | * non-option arguments in argv[]. argv0 is assumed program name and | |
207 | * skipped. | |
208 | * | |
209 | * usagestr strings should be marked for translation with N_(). | |
210 | * | |
4a59fd13 | 211 | * Returns the number of arguments left in argv[]. |
202fbb33 NTND |
212 | * |
213 | * In one-shot mode, argv0 is not a program name, argv[] is left | |
214 | * untouched and parse_options() returns the number of options | |
215 | * processed. | |
4a59fd13 | 216 | */ |
1987b0b2 NTND |
217 | int parse_options(int argc, const char **argv, const char *prefix, |
218 | const struct option *options, | |
219 | const char * const usagestr[], int flags); | |
d7a38c54 | 220 | |
1987b0b2 NTND |
221 | NORETURN void usage_with_options(const char * const *usagestr, |
222 | const struct option *options); | |
4a59fd13 | 223 | |
1987b0b2 NTND |
224 | NORETURN void usage_msg_opt(const char *msg, |
225 | const char * const *usagestr, | |
226 | const struct option *options); | |
451bb210 | 227 | |
1987b0b2 | 228 | int optbug(const struct option *opt, const char *reason); |
9440b831 | 229 | const char *optname(const struct option *opt, int flags); |
a469a101 | 230 | |
517fe807 JK |
231 | /* |
232 | * Use these assertions for callbacks that expect to be called with NONEG and | |
233 | * NOARG respectively, and do not otherwise handle the "unset" and "arg" | |
234 | * parameters. | |
235 | */ | |
236 | #define BUG_ON_OPT_NEG(unset) do { \ | |
237 | if ((unset)) \ | |
238 | BUG("option callback does not expect negation"); \ | |
239 | } while (0) | |
240 | #define BUG_ON_OPT_ARG(arg) do { \ | |
241 | if ((arg)) \ | |
242 | BUG("option callback does not expect an argument"); \ | |
243 | } while (0) | |
244 | ||
cbdeab98 BR |
245 | /* |
246 | * Similar to the assertions above, but checks that "arg" is always non-NULL. | |
247 | * This assertion also implies BUG_ON_OPT_NEG(), letting you declare both | |
248 | * assertions in a single line. | |
249 | */ | |
250 | #define BUG_ON_OPT_NEG_NOARG(unset, arg) do { \ | |
251 | BUG_ON_OPT_NEG(unset); \ | |
252 | if(!(arg)) \ | |
253 | BUG("option callback expects an argument"); \ | |
254 | } while(0) | |
255 | ||
3ea3c215 | 256 | /*----- incremental advanced APIs -----*/ |
7e7bbcb4 | 257 | |
26141b5b PH |
258 | /* |
259 | * It's okay for the caller to consume argv/argc in the usual way. | |
260 | * Other fields of that structure are private to parse-options and should not | |
261 | * be modified in any way. | |
262 | */ | |
7e7bbcb4 PH |
263 | struct parse_opt_ctx_t { |
264 | const char **argv; | |
265 | const char **out; | |
5ad0d3d5 | 266 | int argc, cpidx, total; |
7e7bbcb4 PH |
267 | const char *opt; |
268 | int flags; | |
37782920 | 269 | const char *prefix; |
5c387428 NTND |
270 | const char **alias_groups; /* must be in groups of 3 elements! */ |
271 | struct option *updated_options; | |
7e7bbcb4 PH |
272 | }; |
273 | ||
1987b0b2 NTND |
274 | void parse_options_start(struct parse_opt_ctx_t *ctx, |
275 | int argc, const char **argv, const char *prefix, | |
276 | const struct option *options, int flags); | |
7e7bbcb4 | 277 | |
1987b0b2 NTND |
278 | int parse_options_step(struct parse_opt_ctx_t *ctx, |
279 | const struct option *options, | |
280 | const char * const usagestr[]); | |
ff43ec3e | 281 | |
1987b0b2 | 282 | int parse_options_end(struct parse_opt_ctx_t *ctx); |
7e7bbcb4 | 283 | |
20871822 | 284 | struct option *parse_options_dup(const struct option *a); |
c8407857 | 285 | struct option *parse_options_concat(const struct option *a, const struct option *b); |
7e7bbcb4 | 286 | |
0ce865b1 | 287 | /*----- some often used options -----*/ |
1987b0b2 NTND |
288 | int parse_opt_abbrev_cb(const struct option *, const char *, int); |
289 | int parse_opt_expiry_date_cb(const struct option *, const char *, int); | |
290 | int parse_opt_color_flag_cb(const struct option *, const char *, int); | |
291 | int parse_opt_verbosity_cb(const struct option *, const char *, int); | |
33898531 | 292 | /* value is struct oid_array* */ |
1987b0b2 | 293 | int parse_opt_object_name(const struct option *, const char *, int); |
33898531 PW |
294 | /* value is struct object_id* */ |
295 | int parse_opt_object_id(const struct option *, const char *, int); | |
1987b0b2 | 296 | int parse_opt_commits(const struct option *, const char *, int); |
7d3488eb | 297 | int parse_opt_commit(const struct option *, const char *, int); |
1987b0b2 NTND |
298 | int parse_opt_tertiary(const struct option *, const char *, int); |
299 | int parse_opt_string_list(const struct option *, const char *, int); | |
300 | int parse_opt_noop_cb(const struct option *, const char *, int); | |
567fce1e JS |
301 | enum parse_opt_result parse_opt_unknown_cb(struct parse_opt_ctx_t *ctx, |
302 | const struct option *, | |
303 | const char *, int); | |
1987b0b2 NTND |
304 | int parse_opt_passthru(const struct option *, const char *, int); |
305 | int parse_opt_passthru_argv(const struct option *, const char *, int); | |
0ce865b1 | 306 | |
212c0a6f NTND |
307 | #define OPT__VERBOSE(var, h) OPT_COUNTUP('v', "verbose", (var), (h)) |
308 | #define OPT__QUIET(var, h) OPT_COUNTUP('q', "quiet", (var), (h)) | |
7f87aff2 | 309 | #define OPT__VERBOSITY(var) \ |
54e6dc7d | 310 | { OPTION_CALLBACK, 'v', "verbose", (var), NULL, N_("be more verbose"), \ |
7f87aff2 | 311 | PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 }, \ |
54e6dc7d | 312 | { OPTION_CALLBACK, 'q', "quiet", (var), NULL, N_("be more quiet"), \ |
7f87aff2 | 313 | PARSE_OPT_NOARG, &parse_opt_verbosity_cb, 0 } |
212c0a6f | 314 | #define OPT__DRY_RUN(var, h) OPT_BOOL('n', "dry-run", (var), (h)) |
1224781d | 315 | #define OPT__FORCE(var, h, f) OPT_COUNTUP_F('f', "force", (var), (h), (f)) |
0ce865b1 | 316 | #define OPT__ABBREV(var) \ |
54e6dc7d | 317 | { OPTION_CALLBACK, 0, "abbrev", (var), N_("n"), \ |
4279000d | 318 | N_("use <n> digits to display object names"), \ |
0ce865b1 | 319 | PARSE_OPT_OPTARG, &parse_opt_abbrev_cb, 0 } |
73e9da01 ML |
320 | #define OPT__COLOR(var, h) \ |
321 | OPT_COLOR_FLAG(0, "color", (var), (h)) | |
7e29b825 | 322 | #define OPT_COLUMN(s, l, v, h) \ |
a054e049 | 323 | { OPTION_CALLBACK, (s), (l), (v), N_("style"), (h), PARSE_OPT_OPTARG, parseopt_column_callback } |
6b3ee18d PT |
324 | #define OPT_PASSTHRU(s, l, v, a, h, f) \ |
325 | { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), parse_opt_passthru } | |
ffad85c5 PT |
326 | #define OPT_PASSTHRU_ARGV(s, l, v, a, h, f) \ |
327 | { OPTION_CALLBACK, (s), (l), (v), (a), (h), (f), parse_opt_passthru_argv } | |
f266c916 KN |
328 | #define _OPT_CONTAINS_OR_WITH(name, variable, help, flag) \ |
329 | { OPTION_CALLBACK, 0, name, (variable), N_("commit"), (help), \ | |
330 | PARSE_OPT_LASTARG_DEFAULT | flag, \ | |
331 | parse_opt_commits, (intptr_t) "HEAD" \ | |
332 | } | |
eab98ee5 | 333 | #define OPT_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("contains", v, h, PARSE_OPT_NONEG) |
ac3f5a34 | 334 | #define OPT_NO_CONTAINS(v, h) _OPT_CONTAINS_OR_WITH("no-contains", v, h, PARSE_OPT_NONEG) |
eab98ee5 | 335 | #define OPT_WITH(v, h) _OPT_CONTAINS_OR_WITH("with", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG) |
ac3f5a34 | 336 | #define OPT_WITHOUT(v, h) _OPT_CONTAINS_OR_WITH("without", v, h, PARSE_OPT_HIDDEN | PARSE_OPT_NONEG) |
ca04dc96 | 337 | #define OPT_CLEANUP(v) OPT_STRING(0, "cleanup", v, N_("mode"), N_("how to strip spaces and #comments from message")) |
add97702 AM |
338 | #define OPT_PATHSPEC_FROM_FILE(v) OPT_FILENAME(0, "pathspec-from-file", v, N_("read pathspec from file")) |
339 | #define OPT_PATHSPEC_FILE_NUL(v) OPT_BOOL(0, "pathspec-file-nul", v, N_("with --pathspec-from-file, pathspec elements are separated with NUL character")) | |
a03b5553 | 340 | #define OPT_AUTOSTASH(v) OPT_BOOL(0, "autostash", v, N_("automatically stash/stash pop before and after")) |
0ce865b1 | 341 | |
4a59fd13 | 342 | #endif |