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1 | #include "git-compat-util.h" | |
2 | #include "parse-options.h" | |
3 | #include "cache.h" | |
4 | #include "config.h" | |
5 | #include "commit.h" | |
6 | #include "color.h" | |
7 | #include "utf8.h" | |
8 | ||
9 | #define OPT_SHORT 1 | |
10 | #define OPT_UNSET 2 | |
11 | ||
12 | int optbug(const struct option *opt, const char *reason) | |
13 | { | |
14 | if (opt->long_name) { | |
15 | if (opt->short_name) | |
16 | return error("BUG: switch '%c' (--%s) %s", | |
17 | opt->short_name, opt->long_name, reason); | |
18 | return error("BUG: option '%s' %s", opt->long_name, reason); | |
19 | } | |
20 | return error("BUG: switch '%c' %s", opt->short_name, reason); | |
21 | } | |
22 | ||
23 | static enum parse_opt_result get_arg(struct parse_opt_ctx_t *p, | |
24 | const struct option *opt, | |
25 | int flags, const char **arg) | |
26 | { | |
27 | if (p->opt) { | |
28 | *arg = p->opt; | |
29 | p->opt = NULL; | |
30 | } else if (p->argc == 1 && (opt->flags & PARSE_OPT_LASTARG_DEFAULT)) { | |
31 | *arg = (const char *)opt->defval; | |
32 | } else if (p->argc > 1) { | |
33 | p->argc--; | |
34 | *arg = *++p->argv; | |
35 | } else | |
36 | return error(_("%s requires a value"), optname(opt, flags)); | |
37 | return 0; | |
38 | } | |
39 | ||
40 | static void fix_filename(const char *prefix, const char **file) | |
41 | { | |
42 | if (!file || !*file || !prefix || is_absolute_path(*file) | |
43 | || !strcmp("-", *file)) | |
44 | return; | |
45 | *file = prefix_filename(prefix, *file); | |
46 | } | |
47 | ||
48 | static enum parse_opt_result opt_command_mode_error( | |
49 | const struct option *opt, | |
50 | const struct option *all_opts, | |
51 | int flags) | |
52 | { | |
53 | const struct option *that; | |
54 | struct strbuf that_name = STRBUF_INIT; | |
55 | ||
56 | /* | |
57 | * Find the other option that was used to set the variable | |
58 | * already, and report that this is not compatible with it. | |
59 | */ | |
60 | for (that = all_opts; that->type != OPTION_END; that++) { | |
61 | if (that == opt || | |
62 | that->type != OPTION_CMDMODE || | |
63 | that->value != opt->value || | |
64 | that->defval != *(int *)opt->value) | |
65 | continue; | |
66 | ||
67 | if (that->long_name) | |
68 | strbuf_addf(&that_name, "--%s", that->long_name); | |
69 | else | |
70 | strbuf_addf(&that_name, "-%c", that->short_name); | |
71 | error(_("%s is incompatible with %s"), | |
72 | optname(opt, flags), that_name.buf); | |
73 | strbuf_release(&that_name); | |
74 | return PARSE_OPT_ERROR; | |
75 | } | |
76 | return error(_("%s : incompatible with something else"), | |
77 | optname(opt, flags)); | |
78 | } | |
79 | ||
80 | static enum parse_opt_result get_value(struct parse_opt_ctx_t *p, | |
81 | const struct option *opt, | |
82 | const struct option *all_opts, | |
83 | int flags) | |
84 | { | |
85 | const char *s, *arg; | |
86 | const int unset = flags & OPT_UNSET; | |
87 | int err; | |
88 | ||
89 | if (unset && p->opt) | |
90 | return error(_("%s takes no value"), optname(opt, flags)); | |
91 | if (unset && (opt->flags & PARSE_OPT_NONEG)) | |
92 | return error(_("%s isn't available"), optname(opt, flags)); | |
93 | if (!(flags & OPT_SHORT) && p->opt && (opt->flags & PARSE_OPT_NOARG)) | |
94 | return error(_("%s takes no value"), optname(opt, flags)); | |
95 | ||
96 | switch (opt->type) { | |
97 | case OPTION_LOWLEVEL_CALLBACK: | |
98 | return opt->ll_callback(p, opt, NULL, unset); | |
99 | ||
100 | case OPTION_BIT: | |
101 | if (unset) | |
102 | *(int *)opt->value &= ~opt->defval; | |
103 | else | |
104 | *(int *)opt->value |= opt->defval; | |
105 | return 0; | |
106 | ||
107 | case OPTION_NEGBIT: | |
108 | if (unset) | |
109 | *(int *)opt->value |= opt->defval; | |
110 | else | |
111 | *(int *)opt->value &= ~opt->defval; | |
112 | return 0; | |
113 | ||
114 | case OPTION_BITOP: | |
115 | if (unset) | |
116 | BUG("BITOP can't have unset form"); | |
117 | *(int *)opt->value &= ~opt->extra; | |
118 | *(int *)opt->value |= opt->defval; | |
119 | return 0; | |
120 | ||
121 | case OPTION_COUNTUP: | |
122 | if (*(int *)opt->value < 0) | |
123 | *(int *)opt->value = 0; | |
124 | *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1; | |
125 | return 0; | |
126 | ||
127 | case OPTION_SET_INT: | |
128 | *(int *)opt->value = unset ? 0 : opt->defval; | |
129 | return 0; | |
130 | ||
131 | case OPTION_CMDMODE: | |
132 | /* | |
133 | * Giving the same mode option twice, although is unnecessary, | |
134 | * is not a grave error, so let it pass. | |
135 | */ | |
136 | if (*(int *)opt->value && *(int *)opt->value != opt->defval) | |
137 | return opt_command_mode_error(opt, all_opts, flags); | |
138 | *(int *)opt->value = opt->defval; | |
139 | return 0; | |
140 | ||
141 | case OPTION_STRING: | |
142 | if (unset) | |
143 | *(const char **)opt->value = NULL; | |
144 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
145 | *(const char **)opt->value = (const char *)opt->defval; | |
146 | else | |
147 | return get_arg(p, opt, flags, (const char **)opt->value); | |
148 | return 0; | |
149 | ||
150 | case OPTION_FILENAME: | |
151 | err = 0; | |
152 | if (unset) | |
153 | *(const char **)opt->value = NULL; | |
154 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
155 | *(const char **)opt->value = (const char *)opt->defval; | |
156 | else | |
157 | err = get_arg(p, opt, flags, (const char **)opt->value); | |
158 | ||
159 | if (!err) | |
160 | fix_filename(p->prefix, (const char **)opt->value); | |
161 | return err; | |
162 | ||
163 | case OPTION_CALLBACK: | |
164 | { | |
165 | const char *p_arg = NULL; | |
166 | int p_unset; | |
167 | ||
168 | if (unset) | |
169 | p_unset = 1; | |
170 | else if (opt->flags & PARSE_OPT_NOARG) | |
171 | p_unset = 0; | |
172 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
173 | p_unset = 0; | |
174 | else if (get_arg(p, opt, flags, &arg)) | |
175 | return -1; | |
176 | else { | |
177 | p_unset = 0; | |
178 | p_arg = arg; | |
179 | } | |
180 | if (opt->callback) | |
181 | return (*opt->callback)(opt, p_arg, p_unset) ? (-1) : 0; | |
182 | else | |
183 | return (*opt->ll_callback)(p, opt, p_arg, p_unset); | |
184 | } | |
185 | case OPTION_INTEGER: | |
186 | if (unset) { | |
187 | *(int *)opt->value = 0; | |
188 | return 0; | |
189 | } | |
190 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
191 | *(int *)opt->value = opt->defval; | |
192 | return 0; | |
193 | } | |
194 | if (get_arg(p, opt, flags, &arg)) | |
195 | return -1; | |
196 | *(int *)opt->value = strtol(arg, (char **)&s, 10); | |
197 | if (*s) | |
198 | return error(_("%s expects a numerical value"), | |
199 | optname(opt, flags)); | |
200 | return 0; | |
201 | ||
202 | case OPTION_MAGNITUDE: | |
203 | if (unset) { | |
204 | *(unsigned long *)opt->value = 0; | |
205 | return 0; | |
206 | } | |
207 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
208 | *(unsigned long *)opt->value = opt->defval; | |
209 | return 0; | |
210 | } | |
211 | if (get_arg(p, opt, flags, &arg)) | |
212 | return -1; | |
213 | if (!git_parse_ulong(arg, opt->value)) | |
214 | return error(_("%s expects a non-negative integer value" | |
215 | " with an optional k/m/g suffix"), | |
216 | optname(opt, flags)); | |
217 | return 0; | |
218 | ||
219 | default: | |
220 | BUG("opt->type %d should not happen", opt->type); | |
221 | } | |
222 | } | |
223 | ||
224 | static enum parse_opt_result parse_short_opt(struct parse_opt_ctx_t *p, | |
225 | const struct option *options) | |
226 | { | |
227 | const struct option *all_opts = options; | |
228 | const struct option *numopt = NULL; | |
229 | ||
230 | for (; options->type != OPTION_END; options++) { | |
231 | if (options->short_name == *p->opt) { | |
232 | p->opt = p->opt[1] ? p->opt + 1 : NULL; | |
233 | return get_value(p, options, all_opts, OPT_SHORT); | |
234 | } | |
235 | ||
236 | /* | |
237 | * Handle the numerical option later, explicit one-digit | |
238 | * options take precedence over it. | |
239 | */ | |
240 | if (options->type == OPTION_NUMBER) | |
241 | numopt = options; | |
242 | } | |
243 | if (numopt && isdigit(*p->opt)) { | |
244 | size_t len = 1; | |
245 | char *arg; | |
246 | int rc; | |
247 | ||
248 | while (isdigit(p->opt[len])) | |
249 | len++; | |
250 | arg = xmemdupz(p->opt, len); | |
251 | p->opt = p->opt[len] ? p->opt + len : NULL; | |
252 | if (numopt->callback) | |
253 | rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0; | |
254 | else | |
255 | rc = (*numopt->ll_callback)(p, numopt, arg, 0); | |
256 | free(arg); | |
257 | return rc; | |
258 | } | |
259 | return PARSE_OPT_UNKNOWN; | |
260 | } | |
261 | ||
262 | static enum parse_opt_result parse_long_opt( | |
263 | struct parse_opt_ctx_t *p, const char *arg, | |
264 | const struct option *options) | |
265 | { | |
266 | const struct option *all_opts = options; | |
267 | const char *arg_end = strchrnul(arg, '='); | |
268 | const struct option *abbrev_option = NULL, *ambiguous_option = NULL; | |
269 | int abbrev_flags = 0, ambiguous_flags = 0; | |
270 | ||
271 | for (; options->type != OPTION_END; options++) { | |
272 | const char *rest, *long_name = options->long_name; | |
273 | int flags = 0, opt_flags = 0; | |
274 | ||
275 | if (!long_name) | |
276 | continue; | |
277 | ||
278 | again: | |
279 | if (!skip_prefix(arg, long_name, &rest)) | |
280 | rest = NULL; | |
281 | if (options->type == OPTION_ARGUMENT) { | |
282 | if (!rest) | |
283 | continue; | |
284 | if (*rest == '=') | |
285 | return error(_("%s takes no value"), | |
286 | optname(options, flags)); | |
287 | if (*rest) | |
288 | continue; | |
289 | p->out[p->cpidx++] = arg - 2; | |
290 | return PARSE_OPT_DONE; | |
291 | } | |
292 | if (!rest) { | |
293 | /* abbreviated? */ | |
294 | if (!(p->flags & PARSE_OPT_KEEP_UNKNOWN) && | |
295 | !strncmp(long_name, arg, arg_end - arg)) { | |
296 | is_abbreviated: | |
297 | if (abbrev_option) { | |
298 | /* | |
299 | * If this is abbreviated, it is | |
300 | * ambiguous. So when there is no | |
301 | * exact match later, we need to | |
302 | * error out. | |
303 | */ | |
304 | ambiguous_option = abbrev_option; | |
305 | ambiguous_flags = abbrev_flags; | |
306 | } | |
307 | if (!(flags & OPT_UNSET) && *arg_end) | |
308 | p->opt = arg_end + 1; | |
309 | abbrev_option = options; | |
310 | abbrev_flags = flags ^ opt_flags; | |
311 | continue; | |
312 | } | |
313 | /* negation allowed? */ | |
314 | if (options->flags & PARSE_OPT_NONEG) | |
315 | continue; | |
316 | /* negated and abbreviated very much? */ | |
317 | if (starts_with("no-", arg)) { | |
318 | flags |= OPT_UNSET; | |
319 | goto is_abbreviated; | |
320 | } | |
321 | /* negated? */ | |
322 | if (!starts_with(arg, "no-")) { | |
323 | if (starts_with(long_name, "no-")) { | |
324 | long_name += 3; | |
325 | opt_flags |= OPT_UNSET; | |
326 | goto again; | |
327 | } | |
328 | continue; | |
329 | } | |
330 | flags |= OPT_UNSET; | |
331 | if (!skip_prefix(arg + 3, long_name, &rest)) { | |
332 | /* abbreviated and negated? */ | |
333 | if (starts_with(long_name, arg + 3)) | |
334 | goto is_abbreviated; | |
335 | else | |
336 | continue; | |
337 | } | |
338 | } | |
339 | if (*rest) { | |
340 | if (*rest != '=') | |
341 | continue; | |
342 | p->opt = rest + 1; | |
343 | } | |
344 | return get_value(p, options, all_opts, flags ^ opt_flags); | |
345 | } | |
346 | ||
347 | if (ambiguous_option) { | |
348 | error(_("ambiguous option: %s " | |
349 | "(could be --%s%s or --%s%s)"), | |
350 | arg, | |
351 | (ambiguous_flags & OPT_UNSET) ? "no-" : "", | |
352 | ambiguous_option->long_name, | |
353 | (abbrev_flags & OPT_UNSET) ? "no-" : "", | |
354 | abbrev_option->long_name); | |
355 | return PARSE_OPT_HELP; | |
356 | } | |
357 | if (abbrev_option) | |
358 | return get_value(p, abbrev_option, all_opts, abbrev_flags); | |
359 | return PARSE_OPT_UNKNOWN; | |
360 | } | |
361 | ||
362 | static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg, | |
363 | const struct option *options) | |
364 | { | |
365 | const struct option *all_opts = options; | |
366 | ||
367 | for (; options->type != OPTION_END; options++) { | |
368 | if (!(options->flags & PARSE_OPT_NODASH)) | |
369 | continue; | |
370 | if (options->short_name == arg[0] && arg[1] == '\0') | |
371 | return get_value(p, options, all_opts, OPT_SHORT); | |
372 | } | |
373 | return -2; | |
374 | } | |
375 | ||
376 | static void check_typos(const char *arg, const struct option *options) | |
377 | { | |
378 | if (strlen(arg) < 3) | |
379 | return; | |
380 | ||
381 | if (starts_with(arg, "no-")) { | |
382 | error(_("did you mean `--%s` (with two dashes ?)"), arg); | |
383 | exit(129); | |
384 | } | |
385 | ||
386 | for (; options->type != OPTION_END; options++) { | |
387 | if (!options->long_name) | |
388 | continue; | |
389 | if (starts_with(options->long_name, arg)) { | |
390 | error(_("did you mean `--%s` (with two dashes ?)"), arg); | |
391 | exit(129); | |
392 | } | |
393 | } | |
394 | } | |
395 | ||
396 | static void parse_options_check(const struct option *opts) | |
397 | { | |
398 | int err = 0; | |
399 | char short_opts[128]; | |
400 | ||
401 | memset(short_opts, '\0', sizeof(short_opts)); | |
402 | for (; opts->type != OPTION_END; opts++) { | |
403 | if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) && | |
404 | (opts->flags & PARSE_OPT_OPTARG)) | |
405 | err |= optbug(opts, "uses incompatible flags " | |
406 | "LASTARG_DEFAULT and OPTARG"); | |
407 | if (opts->short_name) { | |
408 | if (0x7F <= opts->short_name) | |
409 | err |= optbug(opts, "invalid short name"); | |
410 | else if (short_opts[opts->short_name]++) | |
411 | err |= optbug(opts, "short name already used"); | |
412 | } | |
413 | if (opts->flags & PARSE_OPT_NODASH && | |
414 | ((opts->flags & PARSE_OPT_OPTARG) || | |
415 | !(opts->flags & PARSE_OPT_NOARG) || | |
416 | !(opts->flags & PARSE_OPT_NONEG) || | |
417 | opts->long_name)) | |
418 | err |= optbug(opts, "uses feature " | |
419 | "not supported for dashless options"); | |
420 | switch (opts->type) { | |
421 | case OPTION_COUNTUP: | |
422 | case OPTION_BIT: | |
423 | case OPTION_NEGBIT: | |
424 | case OPTION_SET_INT: | |
425 | case OPTION_NUMBER: | |
426 | if ((opts->flags & PARSE_OPT_OPTARG) || | |
427 | !(opts->flags & PARSE_OPT_NOARG)) | |
428 | err |= optbug(opts, "should not accept an argument"); | |
429 | break; | |
430 | case OPTION_CALLBACK: | |
431 | if (!opts->callback && !opts->ll_callback) | |
432 | BUG("OPTION_CALLBACK needs one callback"); | |
433 | if (opts->callback && opts->ll_callback) | |
434 | BUG("OPTION_CALLBACK can't have two callbacks"); | |
435 | break; | |
436 | case OPTION_LOWLEVEL_CALLBACK: | |
437 | if (!opts->ll_callback) | |
438 | BUG("OPTION_LOWLEVEL_CALLBACK needs a callback"); | |
439 | if (opts->callback) | |
440 | BUG("OPTION_LOWLEVEL_CALLBACK needs no high level callback"); | |
441 | break; | |
442 | default: | |
443 | ; /* ok. (usually accepts an argument) */ | |
444 | } | |
445 | if (opts->argh && | |
446 | strcspn(opts->argh, " _") != strlen(opts->argh)) | |
447 | err |= optbug(opts, "multi-word argh should use dash to separate words"); | |
448 | } | |
449 | if (err) | |
450 | exit(128); | |
451 | } | |
452 | ||
453 | void parse_options_start(struct parse_opt_ctx_t *ctx, | |
454 | int argc, const char **argv, const char *prefix, | |
455 | const struct option *options, int flags) | |
456 | { | |
457 | memset(ctx, 0, sizeof(*ctx)); | |
458 | ctx->argc = argc; | |
459 | ctx->argv = argv; | |
460 | if (!(flags & PARSE_OPT_ONE_SHOT)) { | |
461 | ctx->argc--; | |
462 | ctx->argv++; | |
463 | } | |
464 | ctx->total = ctx->argc; | |
465 | ctx->out = argv; | |
466 | ctx->prefix = prefix; | |
467 | ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0); | |
468 | ctx->flags = flags; | |
469 | if ((flags & PARSE_OPT_KEEP_UNKNOWN) && | |
470 | (flags & PARSE_OPT_STOP_AT_NON_OPTION) && | |
471 | !(flags & PARSE_OPT_ONE_SHOT)) | |
472 | BUG("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together"); | |
473 | if ((flags & PARSE_OPT_ONE_SHOT) && | |
474 | (flags & PARSE_OPT_KEEP_ARGV0)) | |
475 | BUG("Can't keep argv0 if you don't have it"); | |
476 | parse_options_check(options); | |
477 | } | |
478 | ||
479 | static void show_negated_gitcomp(const struct option *opts, int nr_noopts) | |
480 | { | |
481 | int printed_dashdash = 0; | |
482 | ||
483 | for (; opts->type != OPTION_END; opts++) { | |
484 | int has_unset_form = 0; | |
485 | const char *name; | |
486 | ||
487 | if (!opts->long_name) | |
488 | continue; | |
489 | if (opts->flags & (PARSE_OPT_HIDDEN | PARSE_OPT_NOCOMPLETE)) | |
490 | continue; | |
491 | if (opts->flags & PARSE_OPT_NONEG) | |
492 | continue; | |
493 | ||
494 | switch (opts->type) { | |
495 | case OPTION_STRING: | |
496 | case OPTION_FILENAME: | |
497 | case OPTION_INTEGER: | |
498 | case OPTION_MAGNITUDE: | |
499 | case OPTION_CALLBACK: | |
500 | case OPTION_BIT: | |
501 | case OPTION_NEGBIT: | |
502 | case OPTION_COUNTUP: | |
503 | case OPTION_SET_INT: | |
504 | has_unset_form = 1; | |
505 | break; | |
506 | default: | |
507 | break; | |
508 | } | |
509 | if (!has_unset_form) | |
510 | continue; | |
511 | ||
512 | if (skip_prefix(opts->long_name, "no-", &name)) { | |
513 | if (nr_noopts < 0) | |
514 | printf(" --%s", name); | |
515 | } else if (nr_noopts >= 0) { | |
516 | if (nr_noopts && !printed_dashdash) { | |
517 | printf(" --"); | |
518 | printed_dashdash = 1; | |
519 | } | |
520 | printf(" --no-%s", opts->long_name); | |
521 | nr_noopts++; | |
522 | } | |
523 | } | |
524 | } | |
525 | ||
526 | static int show_gitcomp(struct parse_opt_ctx_t *ctx, | |
527 | const struct option *opts) | |
528 | { | |
529 | const struct option *original_opts = opts; | |
530 | int nr_noopts = 0; | |
531 | ||
532 | for (; opts->type != OPTION_END; opts++) { | |
533 | const char *suffix = ""; | |
534 | ||
535 | if (!opts->long_name) | |
536 | continue; | |
537 | if (opts->flags & (PARSE_OPT_HIDDEN | PARSE_OPT_NOCOMPLETE)) | |
538 | continue; | |
539 | ||
540 | switch (opts->type) { | |
541 | case OPTION_GROUP: | |
542 | continue; | |
543 | case OPTION_STRING: | |
544 | case OPTION_FILENAME: | |
545 | case OPTION_INTEGER: | |
546 | case OPTION_MAGNITUDE: | |
547 | case OPTION_CALLBACK: | |
548 | if (opts->flags & PARSE_OPT_NOARG) | |
549 | break; | |
550 | if (opts->flags & PARSE_OPT_OPTARG) | |
551 | break; | |
552 | if (opts->flags & PARSE_OPT_LASTARG_DEFAULT) | |
553 | break; | |
554 | suffix = "="; | |
555 | break; | |
556 | default: | |
557 | break; | |
558 | } | |
559 | if (opts->flags & PARSE_OPT_COMP_ARG) | |
560 | suffix = "="; | |
561 | if (starts_with(opts->long_name, "no-")) | |
562 | nr_noopts++; | |
563 | printf(" --%s%s", opts->long_name, suffix); | |
564 | } | |
565 | show_negated_gitcomp(original_opts, -1); | |
566 | show_negated_gitcomp(original_opts, nr_noopts); | |
567 | fputc('\n', stdout); | |
568 | return PARSE_OPT_COMPLETE; | |
569 | } | |
570 | ||
571 | static int usage_with_options_internal(struct parse_opt_ctx_t *, | |
572 | const char * const *, | |
573 | const struct option *, int, int); | |
574 | ||
575 | int parse_options_step(struct parse_opt_ctx_t *ctx, | |
576 | const struct option *options, | |
577 | const char * const usagestr[]) | |
578 | { | |
579 | int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP); | |
580 | ||
581 | /* we must reset ->opt, unknown short option leave it dangling */ | |
582 | ctx->opt = NULL; | |
583 | ||
584 | for (; ctx->argc; ctx->argc--, ctx->argv++) { | |
585 | const char *arg = ctx->argv[0]; | |
586 | ||
587 | if (ctx->flags & PARSE_OPT_ONE_SHOT && | |
588 | ctx->argc != ctx->total) | |
589 | break; | |
590 | ||
591 | if (*arg != '-' || !arg[1]) { | |
592 | if (parse_nodash_opt(ctx, arg, options) == 0) | |
593 | continue; | |
594 | if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION) | |
595 | return PARSE_OPT_NON_OPTION; | |
596 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
597 | continue; | |
598 | } | |
599 | ||
600 | /* lone -h asks for help */ | |
601 | if (internal_help && ctx->total == 1 && !strcmp(arg + 1, "h")) | |
602 | goto show_usage; | |
603 | ||
604 | /* lone --git-completion-helper is asked by git-completion.bash */ | |
605 | if (ctx->total == 1 && !strcmp(arg + 1, "-git-completion-helper")) | |
606 | return show_gitcomp(ctx, options); | |
607 | ||
608 | if (arg[1] != '-') { | |
609 | ctx->opt = arg + 1; | |
610 | switch (parse_short_opt(ctx, options)) { | |
611 | case PARSE_OPT_ERROR: | |
612 | return PARSE_OPT_ERROR; | |
613 | case PARSE_OPT_UNKNOWN: | |
614 | if (ctx->opt) | |
615 | check_typos(arg + 1, options); | |
616 | if (internal_help && *ctx->opt == 'h') | |
617 | goto show_usage; | |
618 | goto unknown; | |
619 | case PARSE_OPT_NON_OPTION: | |
620 | case PARSE_OPT_HELP: | |
621 | case PARSE_OPT_COMPLETE: | |
622 | BUG("parse_short_opt() cannot return these"); | |
623 | case PARSE_OPT_DONE: | |
624 | break; | |
625 | } | |
626 | if (ctx->opt) | |
627 | check_typos(arg + 1, options); | |
628 | while (ctx->opt) { | |
629 | switch (parse_short_opt(ctx, options)) { | |
630 | case PARSE_OPT_ERROR: | |
631 | return PARSE_OPT_ERROR; | |
632 | case PARSE_OPT_UNKNOWN: | |
633 | if (internal_help && *ctx->opt == 'h') | |
634 | goto show_usage; | |
635 | ||
636 | /* fake a short option thing to hide the fact that we may have | |
637 | * started to parse aggregated stuff | |
638 | * | |
639 | * This is leaky, too bad. | |
640 | */ | |
641 | ctx->argv[0] = xstrdup(ctx->opt - 1); | |
642 | *(char *)ctx->argv[0] = '-'; | |
643 | goto unknown; | |
644 | case PARSE_OPT_NON_OPTION: | |
645 | case PARSE_OPT_COMPLETE: | |
646 | case PARSE_OPT_HELP: | |
647 | BUG("parse_short_opt() cannot return these"); | |
648 | case PARSE_OPT_DONE: | |
649 | break; | |
650 | } | |
651 | } | |
652 | continue; | |
653 | } | |
654 | ||
655 | if (!arg[2]) { /* "--" */ | |
656 | if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) { | |
657 | ctx->argc--; | |
658 | ctx->argv++; | |
659 | } | |
660 | break; | |
661 | } | |
662 | ||
663 | if (internal_help && !strcmp(arg + 2, "help-all")) | |
664 | return usage_with_options_internal(ctx, usagestr, options, 1, 0); | |
665 | if (internal_help && !strcmp(arg + 2, "help")) | |
666 | goto show_usage; | |
667 | switch (parse_long_opt(ctx, arg + 2, options)) { | |
668 | case PARSE_OPT_ERROR: | |
669 | return PARSE_OPT_ERROR; | |
670 | case PARSE_OPT_UNKNOWN: | |
671 | goto unknown; | |
672 | case PARSE_OPT_HELP: | |
673 | goto show_usage; | |
674 | case PARSE_OPT_NON_OPTION: | |
675 | case PARSE_OPT_COMPLETE: | |
676 | BUG("parse_long_opt() cannot return these"); | |
677 | case PARSE_OPT_DONE: | |
678 | break; | |
679 | } | |
680 | continue; | |
681 | unknown: | |
682 | if (ctx->flags & PARSE_OPT_ONE_SHOT) | |
683 | break; | |
684 | if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN)) | |
685 | return PARSE_OPT_UNKNOWN; | |
686 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
687 | ctx->opt = NULL; | |
688 | } | |
689 | return PARSE_OPT_DONE; | |
690 | ||
691 | show_usage: | |
692 | return usage_with_options_internal(ctx, usagestr, options, 0, 0); | |
693 | } | |
694 | ||
695 | int parse_options_end(struct parse_opt_ctx_t *ctx) | |
696 | { | |
697 | if (ctx->flags & PARSE_OPT_ONE_SHOT) | |
698 | return ctx->total - ctx->argc; | |
699 | ||
700 | MOVE_ARRAY(ctx->out + ctx->cpidx, ctx->argv, ctx->argc); | |
701 | ctx->out[ctx->cpidx + ctx->argc] = NULL; | |
702 | return ctx->cpidx + ctx->argc; | |
703 | } | |
704 | ||
705 | int parse_options(int argc, const char **argv, const char *prefix, | |
706 | const struct option *options, const char * const usagestr[], | |
707 | int flags) | |
708 | { | |
709 | struct parse_opt_ctx_t ctx; | |
710 | ||
711 | parse_options_start(&ctx, argc, argv, prefix, options, flags); | |
712 | switch (parse_options_step(&ctx, options, usagestr)) { | |
713 | case PARSE_OPT_HELP: | |
714 | case PARSE_OPT_ERROR: | |
715 | exit(129); | |
716 | case PARSE_OPT_COMPLETE: | |
717 | exit(0); | |
718 | case PARSE_OPT_NON_OPTION: | |
719 | case PARSE_OPT_DONE: | |
720 | break; | |
721 | default: /* PARSE_OPT_UNKNOWN */ | |
722 | if (ctx.argv[0][1] == '-') { | |
723 | error(_("unknown option `%s'"), ctx.argv[0] + 2); | |
724 | } else if (isascii(*ctx.opt)) { | |
725 | error(_("unknown switch `%c'"), *ctx.opt); | |
726 | } else { | |
727 | error(_("unknown non-ascii option in string: `%s'"), | |
728 | ctx.argv[0]); | |
729 | } | |
730 | usage_with_options(usagestr, options); | |
731 | } | |
732 | ||
733 | precompose_argv(argc, argv); | |
734 | return parse_options_end(&ctx); | |
735 | } | |
736 | ||
737 | static int usage_argh(const struct option *opts, FILE *outfile) | |
738 | { | |
739 | const char *s; | |
740 | int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || | |
741 | !opts->argh || !!strpbrk(opts->argh, "()<>[]|"); | |
742 | if (opts->flags & PARSE_OPT_OPTARG) | |
743 | if (opts->long_name) | |
744 | s = literal ? "[=%s]" : "[=<%s>]"; | |
745 | else | |
746 | s = literal ? "[%s]" : "[<%s>]"; | |
747 | else | |
748 | s = literal ? " %s" : " <%s>"; | |
749 | return utf8_fprintf(outfile, s, opts->argh ? _(opts->argh) : _("...")); | |
750 | } | |
751 | ||
752 | #define USAGE_OPTS_WIDTH 24 | |
753 | #define USAGE_GAP 2 | |
754 | ||
755 | static int usage_with_options_internal(struct parse_opt_ctx_t *ctx, | |
756 | const char * const *usagestr, | |
757 | const struct option *opts, int full, int err) | |
758 | { | |
759 | FILE *outfile = err ? stderr : stdout; | |
760 | int need_newline; | |
761 | ||
762 | if (!usagestr) | |
763 | return PARSE_OPT_HELP; | |
764 | ||
765 | if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL) | |
766 | fprintf(outfile, "cat <<\\EOF\n"); | |
767 | ||
768 | fprintf_ln(outfile, _("usage: %s"), _(*usagestr++)); | |
769 | while (*usagestr && **usagestr) | |
770 | /* | |
771 | * TRANSLATORS: the colon here should align with the | |
772 | * one in "usage: %s" translation. | |
773 | */ | |
774 | fprintf_ln(outfile, _(" or: %s"), _(*usagestr++)); | |
775 | while (*usagestr) { | |
776 | if (**usagestr) | |
777 | fprintf_ln(outfile, _(" %s"), _(*usagestr)); | |
778 | else | |
779 | fputc('\n', outfile); | |
780 | usagestr++; | |
781 | } | |
782 | ||
783 | need_newline = 1; | |
784 | ||
785 | for (; opts->type != OPTION_END; opts++) { | |
786 | size_t pos; | |
787 | int pad; | |
788 | ||
789 | if (opts->type == OPTION_GROUP) { | |
790 | fputc('\n', outfile); | |
791 | need_newline = 0; | |
792 | if (*opts->help) | |
793 | fprintf(outfile, "%s\n", _(opts->help)); | |
794 | continue; | |
795 | } | |
796 | if (!full && (opts->flags & PARSE_OPT_HIDDEN)) | |
797 | continue; | |
798 | ||
799 | if (need_newline) { | |
800 | fputc('\n', outfile); | |
801 | need_newline = 0; | |
802 | } | |
803 | ||
804 | pos = fprintf(outfile, " "); | |
805 | if (opts->short_name) { | |
806 | if (opts->flags & PARSE_OPT_NODASH) | |
807 | pos += fprintf(outfile, "%c", opts->short_name); | |
808 | else | |
809 | pos += fprintf(outfile, "-%c", opts->short_name); | |
810 | } | |
811 | if (opts->long_name && opts->short_name) | |
812 | pos += fprintf(outfile, ", "); | |
813 | if (opts->long_name) | |
814 | pos += fprintf(outfile, "--%s", opts->long_name); | |
815 | if (opts->type == OPTION_NUMBER) | |
816 | pos += utf8_fprintf(outfile, _("-NUM")); | |
817 | ||
818 | if ((opts->flags & PARSE_OPT_LITERAL_ARGHELP) || | |
819 | !(opts->flags & PARSE_OPT_NOARG)) | |
820 | pos += usage_argh(opts, outfile); | |
821 | ||
822 | if (pos <= USAGE_OPTS_WIDTH) | |
823 | pad = USAGE_OPTS_WIDTH - pos; | |
824 | else { | |
825 | fputc('\n', outfile); | |
826 | pad = USAGE_OPTS_WIDTH; | |
827 | } | |
828 | fprintf(outfile, "%*s%s\n", pad + USAGE_GAP, "", _(opts->help)); | |
829 | } | |
830 | fputc('\n', outfile); | |
831 | ||
832 | if (!err && ctx && ctx->flags & PARSE_OPT_SHELL_EVAL) | |
833 | fputs("EOF\n", outfile); | |
834 | ||
835 | return PARSE_OPT_HELP; | |
836 | } | |
837 | ||
838 | void NORETURN usage_with_options(const char * const *usagestr, | |
839 | const struct option *opts) | |
840 | { | |
841 | usage_with_options_internal(NULL, usagestr, opts, 0, 1); | |
842 | exit(129); | |
843 | } | |
844 | ||
845 | void NORETURN usage_msg_opt(const char *msg, | |
846 | const char * const *usagestr, | |
847 | const struct option *options) | |
848 | { | |
849 | fprintf(stderr, "fatal: %s\n\n", msg); | |
850 | usage_with_options(usagestr, options); | |
851 | } | |
852 | ||
853 | const char *optname(const struct option *opt, int flags) | |
854 | { | |
855 | static struct strbuf sb = STRBUF_INIT; | |
856 | ||
857 | strbuf_reset(&sb); | |
858 | if (flags & OPT_SHORT) | |
859 | strbuf_addf(&sb, "switch `%c'", opt->short_name); | |
860 | else if (flags & OPT_UNSET) | |
861 | strbuf_addf(&sb, "option `no-%s'", opt->long_name); | |
862 | else | |
863 | strbuf_addf(&sb, "option `%s'", opt->long_name); | |
864 | ||
865 | return sb.buf; | |
866 | } |