Commit | Line | Data |
---|---|---|
2f4ce5ec JP |
1 | #include <linux/compiler.h> |
2 | #include <linux/types.h> | |
3 | #include <stdio.h> | |
4 | #include <stdlib.h> | |
5 | #include <stdint.h> | |
6 | #include <string.h> | |
7 | #include <ctype.h> | |
901421a5 | 8 | #include "subcmd-util.h" |
07800601 | 9 | #include "parse-options.h" |
096d3558 | 10 | #include "subcmd-config.h" |
2f4ce5ec | 11 | #include "pager.h" |
07800601 IM |
12 | |
13 | #define OPT_SHORT 1 | |
14 | #define OPT_UNSET 2 | |
15 | ||
901421a5 | 16 | char *error_buf; |
01b19455 | 17 | |
07800601 IM |
18 | static int opterror(const struct option *opt, const char *reason, int flags) |
19 | { | |
20 | if (flags & OPT_SHORT) | |
2f4ce5ec JP |
21 | fprintf(stderr, " Error: switch `%c' %s", opt->short_name, reason); |
22 | else if (flags & OPT_UNSET) | |
23 | fprintf(stderr, " Error: option `no-%s' %s", opt->long_name, reason); | |
24 | else | |
25 | fprintf(stderr, " Error: option `%s' %s", opt->long_name, reason); | |
26 | ||
27 | return -1; | |
28 | } | |
29 | ||
30 | static const char *skip_prefix(const char *str, const char *prefix) | |
31 | { | |
32 | size_t len = strlen(prefix); | |
33 | return strncmp(str, prefix, len) ? NULL : str + len; | |
07800601 IM |
34 | } |
35 | ||
48e1cab1 WN |
36 | static void optwarning(const struct option *opt, const char *reason, int flags) |
37 | { | |
38 | if (flags & OPT_SHORT) | |
2f4ce5ec | 39 | fprintf(stderr, " Warning: switch `%c' %s", opt->short_name, reason); |
48e1cab1 | 40 | else if (flags & OPT_UNSET) |
2f4ce5ec | 41 | fprintf(stderr, " Warning: option `no-%s' %s", opt->long_name, reason); |
48e1cab1 | 42 | else |
2f4ce5ec | 43 | fprintf(stderr, " Warning: option `%s' %s", opt->long_name, reason); |
48e1cab1 WN |
44 | } |
45 | ||
07800601 IM |
46 | static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt, |
47 | int flags, const char **arg) | |
48 | { | |
48e1cab1 WN |
49 | const char *res; |
50 | ||
07800601 | 51 | if (p->opt) { |
48e1cab1 | 52 | res = p->opt; |
07800601 | 53 | p->opt = NULL; |
5a4b1817 FW |
54 | } else if ((opt->flags & PARSE_OPT_LASTARG_DEFAULT) && (p->argc == 1 || |
55 | **(p->argv + 1) == '-')) { | |
48e1cab1 | 56 | res = (const char *)opt->defval; |
07800601 IM |
57 | } else if (p->argc > 1) { |
58 | p->argc--; | |
48e1cab1 | 59 | res = *++p->argv; |
07800601 IM |
60 | } else |
61 | return opterror(opt, "requires a value", flags); | |
48e1cab1 WN |
62 | if (arg) |
63 | *arg = res; | |
07800601 IM |
64 | return 0; |
65 | } | |
66 | ||
67 | static int get_value(struct parse_opt_ctx_t *p, | |
68 | const struct option *opt, int flags) | |
69 | { | |
233f0b95 | 70 | const char *s, *arg = NULL; |
07800601 | 71 | const int unset = flags & OPT_UNSET; |
0c8c2077 | 72 | int err; |
07800601 IM |
73 | |
74 | if (unset && p->opt) | |
75 | return opterror(opt, "takes no value", flags); | |
76 | if (unset && (opt->flags & PARSE_OPT_NONEG)) | |
77 | return opterror(opt, "isn't available", flags); | |
d152d1be NK |
78 | if (opt->flags & PARSE_OPT_DISABLED) |
79 | return opterror(opt, "is not usable", flags); | |
07800601 | 80 | |
42bd71d0 | 81 | if (opt->flags & PARSE_OPT_EXCLUSIVE) { |
5594b557 | 82 | if (p->excl_opt && p->excl_opt != opt) { |
42bd71d0 NK |
83 | char msg[128]; |
84 | ||
85 | if (((flags & OPT_SHORT) && p->excl_opt->short_name) || | |
86 | p->excl_opt->long_name == NULL) { | |
2f4ce5ec JP |
87 | snprintf(msg, sizeof(msg), "cannot be used with switch `%c'", |
88 | p->excl_opt->short_name); | |
42bd71d0 | 89 | } else { |
2f4ce5ec JP |
90 | snprintf(msg, sizeof(msg), "cannot be used with %s", |
91 | p->excl_opt->long_name); | |
42bd71d0 NK |
92 | } |
93 | opterror(opt, msg, flags); | |
94 | return -3; | |
95 | } | |
96 | p->excl_opt = opt; | |
97 | } | |
07800601 IM |
98 | if (!(flags & OPT_SHORT) && p->opt) { |
99 | switch (opt->type) { | |
100 | case OPTION_CALLBACK: | |
101 | if (!(opt->flags & PARSE_OPT_NOARG)) | |
102 | break; | |
103 | /* FALLTHROUGH */ | |
104 | case OPTION_BOOLEAN: | |
c0555642 | 105 | case OPTION_INCR: |
07800601 | 106 | case OPTION_BIT: |
edb7c60e | 107 | case OPTION_SET_UINT: |
07800601 IM |
108 | case OPTION_SET_PTR: |
109 | return opterror(opt, "takes no value", flags); | |
83a0944f IM |
110 | case OPTION_END: |
111 | case OPTION_ARGUMENT: | |
112 | case OPTION_GROUP: | |
113 | case OPTION_STRING: | |
114 | case OPTION_INTEGER: | |
c100edbe | 115 | case OPTION_UINTEGER: |
83a0944f | 116 | case OPTION_LONG: |
6ba85cea | 117 | case OPTION_U64: |
07800601 IM |
118 | default: |
119 | break; | |
120 | } | |
121 | } | |
122 | ||
48e1cab1 WN |
123 | if (opt->flags & PARSE_OPT_NOBUILD) { |
124 | char reason[128]; | |
125 | bool noarg = false; | |
126 | ||
127 | err = snprintf(reason, sizeof(reason), | |
128 | opt->flags & PARSE_OPT_CANSKIP ? | |
129 | "is being ignored because %s " : | |
130 | "is not available because %s", | |
131 | opt->build_opt); | |
132 | reason[sizeof(reason) - 1] = '\0'; | |
133 | ||
134 | if (err < 0) | |
135 | strncpy(reason, opt->flags & PARSE_OPT_CANSKIP ? | |
136 | "is being ignored" : | |
137 | "is not available", | |
138 | sizeof(reason)); | |
139 | ||
140 | if (!(opt->flags & PARSE_OPT_CANSKIP)) | |
141 | return opterror(opt, reason, flags); | |
142 | ||
143 | err = 0; | |
144 | if (unset) | |
145 | noarg = true; | |
146 | if (opt->flags & PARSE_OPT_NOARG) | |
147 | noarg = true; | |
148 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
149 | noarg = true; | |
150 | ||
151 | switch (opt->type) { | |
152 | case OPTION_BOOLEAN: | |
153 | case OPTION_INCR: | |
154 | case OPTION_BIT: | |
155 | case OPTION_SET_UINT: | |
156 | case OPTION_SET_PTR: | |
157 | case OPTION_END: | |
158 | case OPTION_ARGUMENT: | |
159 | case OPTION_GROUP: | |
160 | noarg = true; | |
161 | break; | |
162 | case OPTION_CALLBACK: | |
163 | case OPTION_STRING: | |
164 | case OPTION_INTEGER: | |
165 | case OPTION_UINTEGER: | |
166 | case OPTION_LONG: | |
167 | case OPTION_U64: | |
168 | default: | |
169 | break; | |
170 | } | |
171 | ||
172 | if (!noarg) | |
173 | err = get_arg(p, opt, flags, NULL); | |
174 | if (err) | |
175 | return err; | |
176 | ||
177 | optwarning(opt, reason, flags); | |
178 | return 0; | |
179 | } | |
180 | ||
07800601 IM |
181 | switch (opt->type) { |
182 | case OPTION_BIT: | |
183 | if (unset) | |
184 | *(int *)opt->value &= ~opt->defval; | |
185 | else | |
186 | *(int *)opt->value |= opt->defval; | |
187 | return 0; | |
188 | ||
189 | case OPTION_BOOLEAN: | |
c0555642 | 190 | *(bool *)opt->value = unset ? false : true; |
167faf32 AH |
191 | if (opt->set) |
192 | *(bool *)opt->set = true; | |
c0555642 IM |
193 | return 0; |
194 | ||
195 | case OPTION_INCR: | |
07800601 IM |
196 | *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1; |
197 | return 0; | |
198 | ||
edb7c60e ACM |
199 | case OPTION_SET_UINT: |
200 | *(unsigned int *)opt->value = unset ? 0 : opt->defval; | |
07800601 IM |
201 | return 0; |
202 | ||
203 | case OPTION_SET_PTR: | |
204 | *(void **)opt->value = unset ? NULL : (void *)opt->defval; | |
205 | return 0; | |
206 | ||
207 | case OPTION_STRING: | |
0c8c2077 | 208 | err = 0; |
07800601 IM |
209 | if (unset) |
210 | *(const char **)opt->value = NULL; | |
211 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
212 | *(const char **)opt->value = (const char *)opt->defval; | |
213 | else | |
0c8c2077 WN |
214 | err = get_arg(p, opt, flags, (const char **)opt->value); |
215 | ||
216 | /* PARSE_OPT_NOEMPTY: Allow NULL but disallow empty string. */ | |
217 | if (opt->flags & PARSE_OPT_NOEMPTY) { | |
218 | const char *val = *(const char **)opt->value; | |
219 | ||
220 | if (!val) | |
221 | return err; | |
222 | ||
223 | /* Similar to unset if we are given an empty string. */ | |
224 | if (val[0] == '\0') { | |
225 | *(const char **)opt->value = NULL; | |
226 | return 0; | |
227 | } | |
228 | } | |
229 | ||
230 | return err; | |
07800601 IM |
231 | |
232 | case OPTION_CALLBACK: | |
233 | if (unset) | |
234 | return (*opt->callback)(opt, NULL, 1) ? (-1) : 0; | |
235 | if (opt->flags & PARSE_OPT_NOARG) | |
236 | return (*opt->callback)(opt, NULL, 0) ? (-1) : 0; | |
237 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
238 | return (*opt->callback)(opt, NULL, 0) ? (-1) : 0; | |
239 | if (get_arg(p, opt, flags, &arg)) | |
240 | return -1; | |
241 | return (*opt->callback)(opt, arg, 0) ? (-1) : 0; | |
242 | ||
243 | case OPTION_INTEGER: | |
244 | if (unset) { | |
245 | *(int *)opt->value = 0; | |
246 | return 0; | |
247 | } | |
248 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
249 | *(int *)opt->value = opt->defval; | |
250 | return 0; | |
251 | } | |
252 | if (get_arg(p, opt, flags, &arg)) | |
253 | return -1; | |
254 | *(int *)opt->value = strtol(arg, (char **)&s, 10); | |
255 | if (*s) | |
256 | return opterror(opt, "expects a numerical value", flags); | |
e61078a0 PZ |
257 | return 0; |
258 | ||
c100edbe ACM |
259 | case OPTION_UINTEGER: |
260 | if (unset) { | |
261 | *(unsigned int *)opt->value = 0; | |
262 | return 0; | |
263 | } | |
264 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
265 | *(unsigned int *)opt->value = opt->defval; | |
266 | return 0; | |
267 | } | |
268 | if (get_arg(p, opt, flags, &arg)) | |
269 | return -1; | |
270 | *(unsigned int *)opt->value = strtol(arg, (char **)&s, 10); | |
271 | if (*s) | |
272 | return opterror(opt, "expects a numerical value", flags); | |
273 | return 0; | |
274 | ||
e61078a0 PZ |
275 | case OPTION_LONG: |
276 | if (unset) { | |
277 | *(long *)opt->value = 0; | |
278 | return 0; | |
279 | } | |
280 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
281 | *(long *)opt->value = opt->defval; | |
282 | return 0; | |
283 | } | |
284 | if (get_arg(p, opt, flags, &arg)) | |
285 | return -1; | |
286 | *(long *)opt->value = strtol(arg, (char **)&s, 10); | |
287 | if (*s) | |
288 | return opterror(opt, "expects a numerical value", flags); | |
07800601 IM |
289 | return 0; |
290 | ||
6ba85cea ACM |
291 | case OPTION_U64: |
292 | if (unset) { | |
293 | *(u64 *)opt->value = 0; | |
294 | return 0; | |
295 | } | |
296 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
297 | *(u64 *)opt->value = opt->defval; | |
298 | return 0; | |
299 | } | |
300 | if (get_arg(p, opt, flags, &arg)) | |
301 | return -1; | |
302 | *(u64 *)opt->value = strtoull(arg, (char **)&s, 10); | |
303 | if (*s) | |
304 | return opterror(opt, "expects a numerical value", flags); | |
305 | return 0; | |
306 | ||
83a0944f IM |
307 | case OPTION_END: |
308 | case OPTION_ARGUMENT: | |
309 | case OPTION_GROUP: | |
07800601 IM |
310 | default: |
311 | die("should not happen, someone must be hit on the forehead"); | |
312 | } | |
313 | } | |
314 | ||
315 | static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options) | |
316 | { | |
317 | for (; options->type != OPTION_END; options++) { | |
318 | if (options->short_name == *p->opt) { | |
319 | p->opt = p->opt[1] ? p->opt + 1 : NULL; | |
320 | return get_value(p, options, OPT_SHORT); | |
321 | } | |
322 | } | |
323 | return -2; | |
324 | } | |
325 | ||
326 | static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg, | |
327 | const struct option *options) | |
328 | { | |
329 | const char *arg_end = strchr(arg, '='); | |
330 | const struct option *abbrev_option = NULL, *ambiguous_option = NULL; | |
331 | int abbrev_flags = 0, ambiguous_flags = 0; | |
332 | ||
333 | if (!arg_end) | |
334 | arg_end = arg + strlen(arg); | |
335 | ||
336 | for (; options->type != OPTION_END; options++) { | |
337 | const char *rest; | |
338 | int flags = 0; | |
339 | ||
340 | if (!options->long_name) | |
341 | continue; | |
342 | ||
343 | rest = skip_prefix(arg, options->long_name); | |
344 | if (options->type == OPTION_ARGUMENT) { | |
345 | if (!rest) | |
346 | continue; | |
347 | if (*rest == '=') | |
348 | return opterror(options, "takes no value", flags); | |
349 | if (*rest) | |
350 | continue; | |
351 | p->out[p->cpidx++] = arg - 2; | |
352 | return 0; | |
353 | } | |
354 | if (!rest) { | |
4bc43796 AH |
355 | if (!prefixcmp(options->long_name, "no-")) { |
356 | /* | |
357 | * The long name itself starts with "no-", so | |
358 | * accept the option without "no-" so that users | |
359 | * do not have to enter "no-no-" to get the | |
360 | * negation. | |
361 | */ | |
362 | rest = skip_prefix(arg, options->long_name + 3); | |
363 | if (rest) { | |
364 | flags |= OPT_UNSET; | |
365 | goto match; | |
366 | } | |
367 | /* Abbreviated case */ | |
368 | if (!prefixcmp(options->long_name + 3, arg)) { | |
369 | flags |= OPT_UNSET; | |
370 | goto is_abbreviated; | |
371 | } | |
372 | } | |
07800601 IM |
373 | /* abbreviated? */ |
374 | if (!strncmp(options->long_name, arg, arg_end - arg)) { | |
375 | is_abbreviated: | |
376 | if (abbrev_option) { | |
377 | /* | |
378 | * If this is abbreviated, it is | |
379 | * ambiguous. So when there is no | |
380 | * exact match later, we need to | |
381 | * error out. | |
382 | */ | |
383 | ambiguous_option = abbrev_option; | |
384 | ambiguous_flags = abbrev_flags; | |
385 | } | |
386 | if (!(flags & OPT_UNSET) && *arg_end) | |
387 | p->opt = arg_end + 1; | |
388 | abbrev_option = options; | |
389 | abbrev_flags = flags; | |
390 | continue; | |
391 | } | |
392 | /* negated and abbreviated very much? */ | |
393 | if (!prefixcmp("no-", arg)) { | |
394 | flags |= OPT_UNSET; | |
395 | goto is_abbreviated; | |
396 | } | |
397 | /* negated? */ | |
398 | if (strncmp(arg, "no-", 3)) | |
399 | continue; | |
400 | flags |= OPT_UNSET; | |
401 | rest = skip_prefix(arg + 3, options->long_name); | |
402 | /* abbreviated and negated? */ | |
403 | if (!rest && !prefixcmp(options->long_name, arg + 3)) | |
404 | goto is_abbreviated; | |
405 | if (!rest) | |
406 | continue; | |
407 | } | |
4bc43796 | 408 | match: |
07800601 IM |
409 | if (*rest) { |
410 | if (*rest != '=') | |
411 | continue; | |
412 | p->opt = rest + 1; | |
413 | } | |
414 | return get_value(p, options, flags); | |
415 | } | |
416 | ||
2f4ce5ec JP |
417 | if (ambiguous_option) { |
418 | fprintf(stderr, | |
419 | " Error: Ambiguous option: %s (could be --%s%s or --%s%s)", | |
420 | arg, | |
421 | (ambiguous_flags & OPT_UNSET) ? "no-" : "", | |
422 | ambiguous_option->long_name, | |
423 | (abbrev_flags & OPT_UNSET) ? "no-" : "", | |
424 | abbrev_option->long_name); | |
425 | return -1; | |
426 | } | |
07800601 IM |
427 | if (abbrev_option) |
428 | return get_value(p, abbrev_option, abbrev_flags); | |
429 | return -2; | |
430 | } | |
431 | ||
432 | static void check_typos(const char *arg, const struct option *options) | |
433 | { | |
434 | if (strlen(arg) < 3) | |
435 | return; | |
436 | ||
437 | if (!prefixcmp(arg, "no-")) { | |
2f4ce5ec | 438 | fprintf(stderr, " Error: did you mean `--%s` (with two dashes ?)", arg); |
07800601 IM |
439 | exit(129); |
440 | } | |
441 | ||
442 | for (; options->type != OPTION_END; options++) { | |
443 | if (!options->long_name) | |
444 | continue; | |
445 | if (!prefixcmp(options->long_name, arg)) { | |
2f4ce5ec | 446 | fprintf(stderr, " Error: did you mean `--%s` (with two dashes ?)", arg); |
07800601 IM |
447 | exit(129); |
448 | } | |
449 | } | |
450 | } | |
451 | ||
408cf34c JP |
452 | static void parse_options_start(struct parse_opt_ctx_t *ctx, |
453 | int argc, const char **argv, int flags) | |
07800601 IM |
454 | { |
455 | memset(ctx, 0, sizeof(*ctx)); | |
456 | ctx->argc = argc - 1; | |
457 | ctx->argv = argv + 1; | |
458 | ctx->out = argv; | |
459 | ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0); | |
460 | ctx->flags = flags; | |
461 | if ((flags & PARSE_OPT_KEEP_UNKNOWN) && | |
462 | (flags & PARSE_OPT_STOP_AT_NON_OPTION)) | |
463 | die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together"); | |
464 | } | |
465 | ||
466 | static int usage_with_options_internal(const char * const *, | |
161d9041 ACM |
467 | const struct option *, int, |
468 | struct parse_opt_ctx_t *); | |
07800601 | 469 | |
408cf34c JP |
470 | static int parse_options_step(struct parse_opt_ctx_t *ctx, |
471 | const struct option *options, | |
472 | const char * const usagestr[]) | |
07800601 IM |
473 | { |
474 | int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP); | |
42bd71d0 NK |
475 | int excl_short_opt = 1; |
476 | const char *arg; | |
07800601 IM |
477 | |
478 | /* we must reset ->opt, unknown short option leave it dangling */ | |
479 | ctx->opt = NULL; | |
480 | ||
481 | for (; ctx->argc; ctx->argc--, ctx->argv++) { | |
42bd71d0 | 482 | arg = ctx->argv[0]; |
07800601 IM |
483 | if (*arg != '-' || !arg[1]) { |
484 | if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION) | |
485 | break; | |
486 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
487 | continue; | |
488 | } | |
489 | ||
490 | if (arg[1] != '-') { | |
42bd71d0 | 491 | ctx->opt = ++arg; |
161d9041 ACM |
492 | if (internal_help && *ctx->opt == 'h') { |
493 | return usage_with_options_internal(usagestr, options, 0, ctx); | |
494 | } | |
07800601 IM |
495 | switch (parse_short_opt(ctx, options)) { |
496 | case -1: | |
42bd71d0 | 497 | return parse_options_usage(usagestr, options, arg, 1); |
07800601 IM |
498 | case -2: |
499 | goto unknown; | |
42bd71d0 NK |
500 | case -3: |
501 | goto exclusive; | |
83a0944f IM |
502 | default: |
503 | break; | |
07800601 IM |
504 | } |
505 | if (ctx->opt) | |
42bd71d0 | 506 | check_typos(arg, options); |
07800601 IM |
507 | while (ctx->opt) { |
508 | if (internal_help && *ctx->opt == 'h') | |
161d9041 | 509 | return usage_with_options_internal(usagestr, options, 0, ctx); |
ac697625 | 510 | arg = ctx->opt; |
07800601 IM |
511 | switch (parse_short_opt(ctx, options)) { |
512 | case -1: | |
ac697625 | 513 | return parse_options_usage(usagestr, options, arg, 1); |
07800601 IM |
514 | case -2: |
515 | /* fake a short option thing to hide the fact that we may have | |
516 | * started to parse aggregated stuff | |
517 | * | |
518 | * This is leaky, too bad. | |
519 | */ | |
520 | ctx->argv[0] = strdup(ctx->opt - 1); | |
521 | *(char *)ctx->argv[0] = '-'; | |
522 | goto unknown; | |
42bd71d0 NK |
523 | case -3: |
524 | goto exclusive; | |
83a0944f IM |
525 | default: |
526 | break; | |
07800601 IM |
527 | } |
528 | } | |
529 | continue; | |
530 | } | |
531 | ||
532 | if (!arg[2]) { /* "--" */ | |
533 | if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) { | |
534 | ctx->argc--; | |
535 | ctx->argv++; | |
536 | } | |
537 | break; | |
538 | } | |
539 | ||
42bd71d0 NK |
540 | arg += 2; |
541 | if (internal_help && !strcmp(arg, "help-all")) | |
161d9041 | 542 | return usage_with_options_internal(usagestr, options, 1, ctx); |
42bd71d0 | 543 | if (internal_help && !strcmp(arg, "help")) |
161d9041 | 544 | return usage_with_options_internal(usagestr, options, 0, ctx); |
42bd71d0 | 545 | if (!strcmp(arg, "list-opts")) |
09a71b97 | 546 | return PARSE_OPT_LIST_OPTS; |
42bd71d0 | 547 | if (!strcmp(arg, "list-cmds")) |
09a71b97 | 548 | return PARSE_OPT_LIST_SUBCMDS; |
42bd71d0 | 549 | switch (parse_long_opt(ctx, arg, options)) { |
07800601 | 550 | case -1: |
42bd71d0 | 551 | return parse_options_usage(usagestr, options, arg, 0); |
07800601 IM |
552 | case -2: |
553 | goto unknown; | |
42bd71d0 NK |
554 | case -3: |
555 | excl_short_opt = 0; | |
556 | goto exclusive; | |
83a0944f IM |
557 | default: |
558 | break; | |
07800601 IM |
559 | } |
560 | continue; | |
561 | unknown: | |
562 | if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN)) | |
563 | return PARSE_OPT_UNKNOWN; | |
564 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
565 | ctx->opt = NULL; | |
566 | } | |
567 | return PARSE_OPT_DONE; | |
42bd71d0 NK |
568 | |
569 | exclusive: | |
570 | parse_options_usage(usagestr, options, arg, excl_short_opt); | |
571 | if ((excl_short_opt && ctx->excl_opt->short_name) || | |
572 | ctx->excl_opt->long_name == NULL) { | |
573 | char opt = ctx->excl_opt->short_name; | |
574 | parse_options_usage(NULL, options, &opt, 1); | |
575 | } else { | |
576 | parse_options_usage(NULL, options, ctx->excl_opt->long_name, 0); | |
577 | } | |
578 | return PARSE_OPT_HELP; | |
07800601 IM |
579 | } |
580 | ||
408cf34c | 581 | static int parse_options_end(struct parse_opt_ctx_t *ctx) |
07800601 IM |
582 | { |
583 | memmove(ctx->out + ctx->cpidx, ctx->argv, ctx->argc * sizeof(*ctx->out)); | |
584 | ctx->out[ctx->cpidx + ctx->argc] = NULL; | |
585 | return ctx->cpidx + ctx->argc; | |
586 | } | |
587 | ||
09a71b97 RR |
588 | int parse_options_subcommand(int argc, const char **argv, const struct option *options, |
589 | const char *const subcommands[], const char *usagestr[], int flags) | |
07800601 IM |
590 | { |
591 | struct parse_opt_ctx_t ctx; | |
592 | ||
09a71b97 RR |
593 | /* build usage string if it's not provided */ |
594 | if (subcommands && !usagestr[0]) { | |
901421a5 JP |
595 | char *buf = NULL; |
596 | ||
597 | astrcatf(&buf, "%s %s [<options>] {", subcmd_config.exec_name, argv[0]); | |
09a71b97 | 598 | |
09a71b97 RR |
599 | for (int i = 0; subcommands[i]; i++) { |
600 | if (i) | |
901421a5 JP |
601 | astrcat(&buf, "|"); |
602 | astrcat(&buf, subcommands[i]); | |
09a71b97 | 603 | } |
901421a5 | 604 | astrcat(&buf, "}"); |
09a71b97 | 605 | |
901421a5 | 606 | usagestr[0] = buf; |
09a71b97 RR |
607 | } |
608 | ||
07800601 IM |
609 | parse_options_start(&ctx, argc, argv, flags); |
610 | switch (parse_options_step(&ctx, options, usagestr)) { | |
611 | case PARSE_OPT_HELP: | |
612 | exit(129); | |
613 | case PARSE_OPT_DONE: | |
614 | break; | |
09a71b97 | 615 | case PARSE_OPT_LIST_OPTS: |
4d8061fa | 616 | while (options->type != OPTION_END) { |
3ef1e65c YS |
617 | if (options->long_name) |
618 | printf("--%s ", options->long_name); | |
4d8061fa NK |
619 | options++; |
620 | } | |
ed457520 | 621 | putchar('\n'); |
4d8061fa | 622 | exit(130); |
09a71b97 | 623 | case PARSE_OPT_LIST_SUBCMDS: |
3a03005f YS |
624 | if (subcommands) { |
625 | for (int i = 0; subcommands[i]; i++) | |
626 | printf("%s ", subcommands[i]); | |
627 | } | |
ed457520 | 628 | putchar('\n'); |
09a71b97 | 629 | exit(130); |
07800601 | 630 | default: /* PARSE_OPT_UNKNOWN */ |
901421a5 JP |
631 | if (ctx.argv[0][1] == '-') |
632 | astrcatf(&error_buf, "unknown option `%s'", | |
633 | ctx.argv[0] + 2); | |
634 | else | |
635 | astrcatf(&error_buf, "unknown switch `%c'", *ctx.opt); | |
07800601 IM |
636 | usage_with_options(usagestr, options); |
637 | } | |
638 | ||
639 | return parse_options_end(&ctx); | |
640 | } | |
641 | ||
09a71b97 RR |
642 | int parse_options(int argc, const char **argv, const struct option *options, |
643 | const char * const usagestr[], int flags) | |
644 | { | |
645 | return parse_options_subcommand(argc, argv, options, NULL, | |
646 | (const char **) usagestr, flags); | |
647 | } | |
648 | ||
07800601 IM |
649 | #define USAGE_OPTS_WIDTH 24 |
650 | #define USAGE_GAP 2 | |
651 | ||
ac697625 NK |
652 | static void print_option_help(const struct option *opts, int full) |
653 | { | |
654 | size_t pos; | |
655 | int pad; | |
656 | ||
657 | if (opts->type == OPTION_GROUP) { | |
658 | fputc('\n', stderr); | |
659 | if (*opts->help) | |
660 | fprintf(stderr, "%s\n", opts->help); | |
661 | return; | |
662 | } | |
663 | if (!full && (opts->flags & PARSE_OPT_HIDDEN)) | |
664 | return; | |
d152d1be NK |
665 | if (opts->flags & PARSE_OPT_DISABLED) |
666 | return; | |
ac697625 NK |
667 | |
668 | pos = fprintf(stderr, " "); | |
669 | if (opts->short_name) | |
670 | pos += fprintf(stderr, "-%c", opts->short_name); | |
671 | else | |
672 | pos += fprintf(stderr, " "); | |
673 | ||
674 | if (opts->long_name && opts->short_name) | |
675 | pos += fprintf(stderr, ", "); | |
676 | if (opts->long_name) | |
677 | pos += fprintf(stderr, "--%s", opts->long_name); | |
678 | ||
679 | switch (opts->type) { | |
680 | case OPTION_ARGUMENT: | |
681 | break; | |
682 | case OPTION_LONG: | |
683 | case OPTION_U64: | |
684 | case OPTION_INTEGER: | |
685 | case OPTION_UINTEGER: | |
686 | if (opts->flags & PARSE_OPT_OPTARG) | |
687 | if (opts->long_name) | |
688 | pos += fprintf(stderr, "[=<n>]"); | |
689 | else | |
690 | pos += fprintf(stderr, "[<n>]"); | |
691 | else | |
692 | pos += fprintf(stderr, " <n>"); | |
693 | break; | |
694 | case OPTION_CALLBACK: | |
695 | if (opts->flags & PARSE_OPT_NOARG) | |
696 | break; | |
697 | /* FALLTHROUGH */ | |
698 | case OPTION_STRING: | |
699 | if (opts->argh) { | |
700 | if (opts->flags & PARSE_OPT_OPTARG) | |
701 | if (opts->long_name) | |
702 | pos += fprintf(stderr, "[=<%s>]", opts->argh); | |
703 | else | |
704 | pos += fprintf(stderr, "[<%s>]", opts->argh); | |
705 | else | |
706 | pos += fprintf(stderr, " <%s>", opts->argh); | |
707 | } else { | |
708 | if (opts->flags & PARSE_OPT_OPTARG) | |
709 | if (opts->long_name) | |
710 | pos += fprintf(stderr, "[=...]"); | |
711 | else | |
712 | pos += fprintf(stderr, "[...]"); | |
713 | else | |
714 | pos += fprintf(stderr, " ..."); | |
715 | } | |
716 | break; | |
717 | default: /* OPTION_{BIT,BOOLEAN,SET_UINT,SET_PTR} */ | |
718 | case OPTION_END: | |
719 | case OPTION_GROUP: | |
720 | case OPTION_BIT: | |
721 | case OPTION_BOOLEAN: | |
722 | case OPTION_INCR: | |
723 | case OPTION_SET_UINT: | |
724 | case OPTION_SET_PTR: | |
725 | break; | |
726 | } | |
727 | ||
728 | if (pos <= USAGE_OPTS_WIDTH) | |
729 | pad = USAGE_OPTS_WIDTH - pos; | |
730 | else { | |
731 | fputc('\n', stderr); | |
732 | pad = USAGE_OPTS_WIDTH; | |
733 | } | |
734 | fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help); | |
48e1cab1 WN |
735 | if (opts->flags & PARSE_OPT_NOBUILD) |
736 | fprintf(stderr, "%*s(not built-in because %s)\n", | |
737 | USAGE_OPTS_WIDTH + USAGE_GAP, "", | |
738 | opts->build_opt); | |
ac697625 NK |
739 | } |
740 | ||
869c55b0 ACM |
741 | static int option__cmp(const void *va, const void *vb) |
742 | { | |
743 | const struct option *a = va, *b = vb; | |
744 | int sa = tolower(a->short_name), sb = tolower(b->short_name), ret; | |
745 | ||
746 | if (sa == 0) | |
747 | sa = 'z' + 1; | |
748 | if (sb == 0) | |
749 | sb = 'z' + 1; | |
750 | ||
751 | ret = sa - sb; | |
752 | ||
753 | if (ret == 0) { | |
754 | const char *la = a->long_name ?: "", | |
755 | *lb = b->long_name ?: ""; | |
756 | ret = strcmp(la, lb); | |
757 | } | |
758 | ||
759 | return ret; | |
760 | } | |
761 | ||
762 | static struct option *options__order(const struct option *opts) | |
763 | { | |
2f4ce5ec | 764 | int nr_opts = 0, len; |
869c55b0 ACM |
765 | const struct option *o = opts; |
766 | struct option *ordered; | |
767 | ||
768 | for (o = opts; o->type != OPTION_END; o++) | |
769 | ++nr_opts; | |
770 | ||
2f4ce5ec JP |
771 | len = sizeof(*o) * (nr_opts + 1); |
772 | ordered = malloc(len); | |
773 | if (!ordered) | |
869c55b0 | 774 | goto out; |
2f4ce5ec | 775 | memcpy(ordered, opts, len); |
869c55b0 ACM |
776 | |
777 | qsort(ordered, nr_opts, sizeof(*o), option__cmp); | |
778 | out: | |
779 | return ordered; | |
780 | } | |
781 | ||
161d9041 ACM |
782 | static bool option__in_argv(const struct option *opt, const struct parse_opt_ctx_t *ctx) |
783 | { | |
784 | int i; | |
785 | ||
786 | for (i = 1; i < ctx->argc; ++i) { | |
787 | const char *arg = ctx->argv[i]; | |
788 | ||
f4efcce3 ACM |
789 | if (arg[0] != '-') { |
790 | if (arg[1] == '\0') { | |
791 | if (arg[0] == opt->short_name) | |
792 | return true; | |
793 | continue; | |
794 | } | |
795 | ||
796 | if (opt->long_name && strcmp(opt->long_name, arg) == 0) | |
797 | return true; | |
798 | ||
799 | if (opt->help && strcasestr(opt->help, arg) != NULL) | |
800 | return true; | |
801 | ||
161d9041 | 802 | continue; |
f4efcce3 | 803 | } |
161d9041 ACM |
804 | |
805 | if (arg[1] == opt->short_name || | |
806 | (arg[1] == '-' && opt->long_name && strcmp(opt->long_name, arg + 2) == 0)) | |
807 | return true; | |
808 | } | |
809 | ||
810 | return false; | |
811 | } | |
812 | ||
408cf34c JP |
813 | static int usage_with_options_internal(const char * const *usagestr, |
814 | const struct option *opts, int full, | |
815 | struct parse_opt_ctx_t *ctx) | |
07800601 | 816 | { |
869c55b0 ACM |
817 | struct option *ordered; |
818 | ||
07800601 IM |
819 | if (!usagestr) |
820 | return PARSE_OPT_HELP; | |
821 | ||
01b19455 NK |
822 | setup_pager(); |
823 | ||
901421a5 JP |
824 | if (error_buf) { |
825 | fprintf(stderr, " Error: %s\n", error_buf); | |
826 | zfree(&error_buf); | |
01b19455 NK |
827 | } |
828 | ||
3a134ae9 | 829 | fprintf(stderr, "\n Usage: %s\n", *usagestr++); |
07800601 | 830 | while (*usagestr && **usagestr) |
6e6b754f | 831 | fprintf(stderr, " or: %s\n", *usagestr++); |
07800601 IM |
832 | while (*usagestr) { |
833 | fprintf(stderr, "%s%s\n", | |
834 | **usagestr ? " " : "", | |
835 | *usagestr); | |
836 | usagestr++; | |
837 | } | |
838 | ||
839 | if (opts->type != OPTION_GROUP) | |
840 | fputc('\n', stderr); | |
841 | ||
869c55b0 ACM |
842 | ordered = options__order(opts); |
843 | if (ordered) | |
844 | opts = ordered; | |
845 | ||
161d9041 ACM |
846 | for ( ; opts->type != OPTION_END; opts++) { |
847 | if (ctx && ctx->argc > 1 && !option__in_argv(opts, ctx)) | |
848 | continue; | |
ac697625 | 849 | print_option_help(opts, full); |
161d9041 | 850 | } |
07800601 | 851 | |
07800601 IM |
852 | fputc('\n', stderr); |
853 | ||
869c55b0 ACM |
854 | free(ordered); |
855 | ||
07800601 IM |
856 | return PARSE_OPT_HELP; |
857 | } | |
858 | ||
859 | void usage_with_options(const char * const *usagestr, | |
860 | const struct option *opts) | |
861 | { | |
161d9041 | 862 | usage_with_options_internal(usagestr, opts, 0, NULL); |
07800601 IM |
863 | exit(129); |
864 | } | |
865 | ||
c7118369 NK |
866 | void usage_with_options_msg(const char * const *usagestr, |
867 | const struct option *opts, const char *fmt, ...) | |
868 | { | |
869 | va_list ap; | |
901421a5 | 870 | char *tmp = error_buf; |
c7118369 | 871 | |
c7118369 | 872 | va_start(ap, fmt); |
901421a5 JP |
873 | if (vasprintf(&error_buf, fmt, ap) == -1) |
874 | die("vasprintf failed"); | |
c7118369 NK |
875 | va_end(ap); |
876 | ||
901421a5 JP |
877 | free(tmp); |
878 | ||
c7118369 NK |
879 | usage_with_options_internal(usagestr, opts, 0, NULL); |
880 | exit(129); | |
881 | } | |
882 | ||
07800601 | 883 | int parse_options_usage(const char * const *usagestr, |
ac697625 NK |
884 | const struct option *opts, |
885 | const char *optstr, bool short_opt) | |
07800601 | 886 | { |
ac697625 | 887 | if (!usagestr) |
cc03c542 | 888 | goto opt; |
ac697625 | 889 | |
3a134ae9 | 890 | fprintf(stderr, "\n Usage: %s\n", *usagestr++); |
ac697625 NK |
891 | while (*usagestr && **usagestr) |
892 | fprintf(stderr, " or: %s\n", *usagestr++); | |
893 | while (*usagestr) { | |
894 | fprintf(stderr, "%s%s\n", | |
895 | **usagestr ? " " : "", | |
896 | *usagestr); | |
897 | usagestr++; | |
898 | } | |
899 | fputc('\n', stderr); | |
900 | ||
cc03c542 | 901 | opt: |
ac697625 NK |
902 | for ( ; opts->type != OPTION_END; opts++) { |
903 | if (short_opt) { | |
a5f4a693 NK |
904 | if (opts->short_name == *optstr) { |
905 | print_option_help(opts, 0); | |
ac697625 | 906 | break; |
a5f4a693 | 907 | } |
ac697625 NK |
908 | continue; |
909 | } | |
910 | ||
911 | if (opts->long_name == NULL) | |
912 | continue; | |
913 | ||
a5f4a693 NK |
914 | if (!prefixcmp(opts->long_name, optstr)) |
915 | print_option_help(opts, 0); | |
916 | if (!prefixcmp("no-", optstr) && | |
917 | !prefixcmp(opts->long_name, optstr + 3)) | |
918 | print_option_help(opts, 0); | |
ac697625 NK |
919 | } |
920 | ||
ac697625 | 921 | return PARSE_OPT_HELP; |
07800601 IM |
922 | } |
923 | ||
924 | ||
1d037ca1 IT |
925 | int parse_opt_verbosity_cb(const struct option *opt, |
926 | const char *arg __maybe_unused, | |
07800601 IM |
927 | int unset) |
928 | { | |
929 | int *target = opt->value; | |
930 | ||
931 | if (unset) | |
932 | /* --no-quiet, --no-verbose */ | |
933 | *target = 0; | |
934 | else if (opt->short_name == 'v') { | |
935 | if (*target >= 0) | |
936 | (*target)++; | |
937 | else | |
938 | *target = 1; | |
939 | } else { | |
940 | if (*target <= 0) | |
941 | (*target)--; | |
942 | else | |
943 | *target = -1; | |
944 | } | |
945 | return 0; | |
946 | } | |
d152d1be | 947 | |
48e1cab1 WN |
948 | static struct option * |
949 | find_option(struct option *opts, int shortopt, const char *longopt) | |
d152d1be NK |
950 | { |
951 | for (; opts->type != OPTION_END; opts++) { | |
952 | if ((shortopt && opts->short_name == shortopt) || | |
953 | (opts->long_name && longopt && | |
48e1cab1 WN |
954 | !strcmp(opts->long_name, longopt))) |
955 | return opts; | |
d152d1be | 956 | } |
48e1cab1 WN |
957 | return NULL; |
958 | } | |
959 | ||
960 | void set_option_flag(struct option *opts, int shortopt, const char *longopt, | |
961 | int flag) | |
962 | { | |
963 | struct option *opt = find_option(opts, shortopt, longopt); | |
964 | ||
965 | if (opt) | |
966 | opt->flags |= flag; | |
967 | return; | |
968 | } | |
969 | ||
970 | void set_option_nobuild(struct option *opts, int shortopt, | |
971 | const char *longopt, | |
972 | const char *build_opt, | |
973 | bool can_skip) | |
974 | { | |
975 | struct option *opt = find_option(opts, shortopt, longopt); | |
976 | ||
977 | if (!opt) | |
978 | return; | |
979 | ||
980 | opt->flags |= PARSE_OPT_NOBUILD; | |
981 | opt->flags |= can_skip ? PARSE_OPT_CANSKIP : 0; | |
982 | opt->build_opt = build_opt; | |
d152d1be | 983 | } |