Commit | Line | Data |
---|---|---|
07800601 IM |
1 | #include "util.h" |
2 | #include "parse-options.h" | |
3 | #include "cache.h" | |
56e6f602 | 4 | #include "header.h" |
07800601 IM |
5 | |
6 | #define OPT_SHORT 1 | |
7 | #define OPT_UNSET 2 | |
8 | ||
9 | static int opterror(const struct option *opt, const char *reason, int flags) | |
10 | { | |
11 | if (flags & OPT_SHORT) | |
12 | return error("switch `%c' %s", opt->short_name, reason); | |
13 | if (flags & OPT_UNSET) | |
14 | return error("option `no-%s' %s", opt->long_name, reason); | |
15 | return error("option `%s' %s", opt->long_name, reason); | |
16 | } | |
17 | ||
18 | static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt, | |
19 | int flags, const char **arg) | |
20 | { | |
21 | if (p->opt) { | |
22 | *arg = p->opt; | |
23 | p->opt = NULL; | |
5a4b1817 FW |
24 | } else if ((opt->flags & PARSE_OPT_LASTARG_DEFAULT) && (p->argc == 1 || |
25 | **(p->argv + 1) == '-')) { | |
07800601 IM |
26 | *arg = (const char *)opt->defval; |
27 | } else if (p->argc > 1) { | |
28 | p->argc--; | |
29 | *arg = *++p->argv; | |
30 | } else | |
31 | return opterror(opt, "requires a value", flags); | |
32 | return 0; | |
33 | } | |
34 | ||
35 | static int get_value(struct parse_opt_ctx_t *p, | |
36 | const struct option *opt, int flags) | |
37 | { | |
233f0b95 | 38 | const char *s, *arg = NULL; |
07800601 | 39 | const int unset = flags & OPT_UNSET; |
0c8c2077 | 40 | int err; |
07800601 IM |
41 | |
42 | if (unset && p->opt) | |
43 | return opterror(opt, "takes no value", flags); | |
44 | if (unset && (opt->flags & PARSE_OPT_NONEG)) | |
45 | return opterror(opt, "isn't available", flags); | |
d152d1be NK |
46 | if (opt->flags & PARSE_OPT_DISABLED) |
47 | return opterror(opt, "is not usable", flags); | |
07800601 | 48 | |
42bd71d0 | 49 | if (opt->flags & PARSE_OPT_EXCLUSIVE) { |
5594b557 | 50 | if (p->excl_opt && p->excl_opt != opt) { |
42bd71d0 NK |
51 | char msg[128]; |
52 | ||
53 | if (((flags & OPT_SHORT) && p->excl_opt->short_name) || | |
54 | p->excl_opt->long_name == NULL) { | |
55 | scnprintf(msg, sizeof(msg), "cannot be used with switch `%c'", | |
56 | p->excl_opt->short_name); | |
57 | } else { | |
58 | scnprintf(msg, sizeof(msg), "cannot be used with %s", | |
59 | p->excl_opt->long_name); | |
60 | } | |
61 | opterror(opt, msg, flags); | |
62 | return -3; | |
63 | } | |
64 | p->excl_opt = opt; | |
65 | } | |
07800601 IM |
66 | if (!(flags & OPT_SHORT) && p->opt) { |
67 | switch (opt->type) { | |
68 | case OPTION_CALLBACK: | |
69 | if (!(opt->flags & PARSE_OPT_NOARG)) | |
70 | break; | |
71 | /* FALLTHROUGH */ | |
72 | case OPTION_BOOLEAN: | |
c0555642 | 73 | case OPTION_INCR: |
07800601 | 74 | case OPTION_BIT: |
edb7c60e | 75 | case OPTION_SET_UINT: |
07800601 IM |
76 | case OPTION_SET_PTR: |
77 | return opterror(opt, "takes no value", flags); | |
83a0944f IM |
78 | case OPTION_END: |
79 | case OPTION_ARGUMENT: | |
80 | case OPTION_GROUP: | |
81 | case OPTION_STRING: | |
82 | case OPTION_INTEGER: | |
c100edbe | 83 | case OPTION_UINTEGER: |
83a0944f | 84 | case OPTION_LONG: |
6ba85cea | 85 | case OPTION_U64: |
07800601 IM |
86 | default: |
87 | break; | |
88 | } | |
89 | } | |
90 | ||
91 | switch (opt->type) { | |
92 | case OPTION_BIT: | |
93 | if (unset) | |
94 | *(int *)opt->value &= ~opt->defval; | |
95 | else | |
96 | *(int *)opt->value |= opt->defval; | |
97 | return 0; | |
98 | ||
99 | case OPTION_BOOLEAN: | |
c0555642 | 100 | *(bool *)opt->value = unset ? false : true; |
167faf32 AH |
101 | if (opt->set) |
102 | *(bool *)opt->set = true; | |
c0555642 IM |
103 | return 0; |
104 | ||
105 | case OPTION_INCR: | |
07800601 IM |
106 | *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1; |
107 | return 0; | |
108 | ||
edb7c60e ACM |
109 | case OPTION_SET_UINT: |
110 | *(unsigned int *)opt->value = unset ? 0 : opt->defval; | |
07800601 IM |
111 | return 0; |
112 | ||
113 | case OPTION_SET_PTR: | |
114 | *(void **)opt->value = unset ? NULL : (void *)opt->defval; | |
115 | return 0; | |
116 | ||
117 | case OPTION_STRING: | |
0c8c2077 | 118 | err = 0; |
07800601 IM |
119 | if (unset) |
120 | *(const char **)opt->value = NULL; | |
121 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
122 | *(const char **)opt->value = (const char *)opt->defval; | |
123 | else | |
0c8c2077 WN |
124 | err = get_arg(p, opt, flags, (const char **)opt->value); |
125 | ||
126 | /* PARSE_OPT_NOEMPTY: Allow NULL but disallow empty string. */ | |
127 | if (opt->flags & PARSE_OPT_NOEMPTY) { | |
128 | const char *val = *(const char **)opt->value; | |
129 | ||
130 | if (!val) | |
131 | return err; | |
132 | ||
133 | /* Similar to unset if we are given an empty string. */ | |
134 | if (val[0] == '\0') { | |
135 | *(const char **)opt->value = NULL; | |
136 | return 0; | |
137 | } | |
138 | } | |
139 | ||
140 | return err; | |
07800601 IM |
141 | |
142 | case OPTION_CALLBACK: | |
143 | if (unset) | |
144 | return (*opt->callback)(opt, NULL, 1) ? (-1) : 0; | |
145 | if (opt->flags & PARSE_OPT_NOARG) | |
146 | return (*opt->callback)(opt, NULL, 0) ? (-1) : 0; | |
147 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
148 | return (*opt->callback)(opt, NULL, 0) ? (-1) : 0; | |
149 | if (get_arg(p, opt, flags, &arg)) | |
150 | return -1; | |
151 | return (*opt->callback)(opt, arg, 0) ? (-1) : 0; | |
152 | ||
153 | case OPTION_INTEGER: | |
154 | if (unset) { | |
155 | *(int *)opt->value = 0; | |
156 | return 0; | |
157 | } | |
158 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
159 | *(int *)opt->value = opt->defval; | |
160 | return 0; | |
161 | } | |
162 | if (get_arg(p, opt, flags, &arg)) | |
163 | return -1; | |
164 | *(int *)opt->value = strtol(arg, (char **)&s, 10); | |
165 | if (*s) | |
166 | return opterror(opt, "expects a numerical value", flags); | |
e61078a0 PZ |
167 | return 0; |
168 | ||
c100edbe ACM |
169 | case OPTION_UINTEGER: |
170 | if (unset) { | |
171 | *(unsigned int *)opt->value = 0; | |
172 | return 0; | |
173 | } | |
174 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
175 | *(unsigned int *)opt->value = opt->defval; | |
176 | return 0; | |
177 | } | |
178 | if (get_arg(p, opt, flags, &arg)) | |
179 | return -1; | |
180 | *(unsigned int *)opt->value = strtol(arg, (char **)&s, 10); | |
181 | if (*s) | |
182 | return opterror(opt, "expects a numerical value", flags); | |
183 | return 0; | |
184 | ||
e61078a0 PZ |
185 | case OPTION_LONG: |
186 | if (unset) { | |
187 | *(long *)opt->value = 0; | |
188 | return 0; | |
189 | } | |
190 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
191 | *(long *)opt->value = opt->defval; | |
192 | return 0; | |
193 | } | |
194 | if (get_arg(p, opt, flags, &arg)) | |
195 | return -1; | |
196 | *(long *)opt->value = strtol(arg, (char **)&s, 10); | |
197 | if (*s) | |
198 | return opterror(opt, "expects a numerical value", flags); | |
07800601 IM |
199 | return 0; |
200 | ||
6ba85cea ACM |
201 | case OPTION_U64: |
202 | if (unset) { | |
203 | *(u64 *)opt->value = 0; | |
204 | return 0; | |
205 | } | |
206 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
207 | *(u64 *)opt->value = opt->defval; | |
208 | return 0; | |
209 | } | |
210 | if (get_arg(p, opt, flags, &arg)) | |
211 | return -1; | |
212 | *(u64 *)opt->value = strtoull(arg, (char **)&s, 10); | |
213 | if (*s) | |
214 | return opterror(opt, "expects a numerical value", flags); | |
215 | return 0; | |
216 | ||
83a0944f IM |
217 | case OPTION_END: |
218 | case OPTION_ARGUMENT: | |
219 | case OPTION_GROUP: | |
07800601 IM |
220 | default: |
221 | die("should not happen, someone must be hit on the forehead"); | |
222 | } | |
223 | } | |
224 | ||
225 | static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options) | |
226 | { | |
227 | for (; options->type != OPTION_END; options++) { | |
228 | if (options->short_name == *p->opt) { | |
229 | p->opt = p->opt[1] ? p->opt + 1 : NULL; | |
230 | return get_value(p, options, OPT_SHORT); | |
231 | } | |
232 | } | |
233 | return -2; | |
234 | } | |
235 | ||
236 | static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg, | |
237 | const struct option *options) | |
238 | { | |
239 | const char *arg_end = strchr(arg, '='); | |
240 | const struct option *abbrev_option = NULL, *ambiguous_option = NULL; | |
241 | int abbrev_flags = 0, ambiguous_flags = 0; | |
242 | ||
243 | if (!arg_end) | |
244 | arg_end = arg + strlen(arg); | |
245 | ||
246 | for (; options->type != OPTION_END; options++) { | |
247 | const char *rest; | |
248 | int flags = 0; | |
249 | ||
250 | if (!options->long_name) | |
251 | continue; | |
252 | ||
253 | rest = skip_prefix(arg, options->long_name); | |
254 | if (options->type == OPTION_ARGUMENT) { | |
255 | if (!rest) | |
256 | continue; | |
257 | if (*rest == '=') | |
258 | return opterror(options, "takes no value", flags); | |
259 | if (*rest) | |
260 | continue; | |
261 | p->out[p->cpidx++] = arg - 2; | |
262 | return 0; | |
263 | } | |
264 | if (!rest) { | |
4bc43796 AH |
265 | if (!prefixcmp(options->long_name, "no-")) { |
266 | /* | |
267 | * The long name itself starts with "no-", so | |
268 | * accept the option without "no-" so that users | |
269 | * do not have to enter "no-no-" to get the | |
270 | * negation. | |
271 | */ | |
272 | rest = skip_prefix(arg, options->long_name + 3); | |
273 | if (rest) { | |
274 | flags |= OPT_UNSET; | |
275 | goto match; | |
276 | } | |
277 | /* Abbreviated case */ | |
278 | if (!prefixcmp(options->long_name + 3, arg)) { | |
279 | flags |= OPT_UNSET; | |
280 | goto is_abbreviated; | |
281 | } | |
282 | } | |
07800601 IM |
283 | /* abbreviated? */ |
284 | if (!strncmp(options->long_name, arg, arg_end - arg)) { | |
285 | is_abbreviated: | |
286 | if (abbrev_option) { | |
287 | /* | |
288 | * If this is abbreviated, it is | |
289 | * ambiguous. So when there is no | |
290 | * exact match later, we need to | |
291 | * error out. | |
292 | */ | |
293 | ambiguous_option = abbrev_option; | |
294 | ambiguous_flags = abbrev_flags; | |
295 | } | |
296 | if (!(flags & OPT_UNSET) && *arg_end) | |
297 | p->opt = arg_end + 1; | |
298 | abbrev_option = options; | |
299 | abbrev_flags = flags; | |
300 | continue; | |
301 | } | |
302 | /* negated and abbreviated very much? */ | |
303 | if (!prefixcmp("no-", arg)) { | |
304 | flags |= OPT_UNSET; | |
305 | goto is_abbreviated; | |
306 | } | |
307 | /* negated? */ | |
308 | if (strncmp(arg, "no-", 3)) | |
309 | continue; | |
310 | flags |= OPT_UNSET; | |
311 | rest = skip_prefix(arg + 3, options->long_name); | |
312 | /* abbreviated and negated? */ | |
313 | if (!rest && !prefixcmp(options->long_name, arg + 3)) | |
314 | goto is_abbreviated; | |
315 | if (!rest) | |
316 | continue; | |
317 | } | |
4bc43796 | 318 | match: |
07800601 IM |
319 | if (*rest) { |
320 | if (*rest != '=') | |
321 | continue; | |
322 | p->opt = rest + 1; | |
323 | } | |
324 | return get_value(p, options, flags); | |
325 | } | |
326 | ||
327 | if (ambiguous_option) | |
328 | return error("Ambiguous option: %s " | |
329 | "(could be --%s%s or --%s%s)", | |
330 | arg, | |
331 | (ambiguous_flags & OPT_UNSET) ? "no-" : "", | |
332 | ambiguous_option->long_name, | |
333 | (abbrev_flags & OPT_UNSET) ? "no-" : "", | |
334 | abbrev_option->long_name); | |
335 | if (abbrev_option) | |
336 | return get_value(p, abbrev_option, abbrev_flags); | |
337 | return -2; | |
338 | } | |
339 | ||
340 | static void check_typos(const char *arg, const struct option *options) | |
341 | { | |
342 | if (strlen(arg) < 3) | |
343 | return; | |
344 | ||
345 | if (!prefixcmp(arg, "no-")) { | |
346 | error ("did you mean `--%s` (with two dashes ?)", arg); | |
347 | exit(129); | |
348 | } | |
349 | ||
350 | for (; options->type != OPTION_END; options++) { | |
351 | if (!options->long_name) | |
352 | continue; | |
353 | if (!prefixcmp(options->long_name, arg)) { | |
354 | error ("did you mean `--%s` (with two dashes ?)", arg); | |
355 | exit(129); | |
356 | } | |
357 | } | |
358 | } | |
359 | ||
360 | void parse_options_start(struct parse_opt_ctx_t *ctx, | |
361 | int argc, const char **argv, int flags) | |
362 | { | |
363 | memset(ctx, 0, sizeof(*ctx)); | |
364 | ctx->argc = argc - 1; | |
365 | ctx->argv = argv + 1; | |
366 | ctx->out = argv; | |
367 | ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0); | |
368 | ctx->flags = flags; | |
369 | if ((flags & PARSE_OPT_KEEP_UNKNOWN) && | |
370 | (flags & PARSE_OPT_STOP_AT_NON_OPTION)) | |
371 | die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together"); | |
372 | } | |
373 | ||
374 | static int usage_with_options_internal(const char * const *, | |
375 | const struct option *, int); | |
376 | ||
377 | int parse_options_step(struct parse_opt_ctx_t *ctx, | |
378 | const struct option *options, | |
379 | const char * const usagestr[]) | |
380 | { | |
381 | int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP); | |
42bd71d0 NK |
382 | int excl_short_opt = 1; |
383 | const char *arg; | |
07800601 IM |
384 | |
385 | /* we must reset ->opt, unknown short option leave it dangling */ | |
386 | ctx->opt = NULL; | |
387 | ||
388 | for (; ctx->argc; ctx->argc--, ctx->argv++) { | |
42bd71d0 | 389 | arg = ctx->argv[0]; |
07800601 IM |
390 | if (*arg != '-' || !arg[1]) { |
391 | if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION) | |
392 | break; | |
393 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
394 | continue; | |
395 | } | |
396 | ||
397 | if (arg[1] != '-') { | |
42bd71d0 | 398 | ctx->opt = ++arg; |
07800601 | 399 | if (internal_help && *ctx->opt == 'h') |
ac697625 | 400 | return usage_with_options_internal(usagestr, options, 0); |
07800601 IM |
401 | switch (parse_short_opt(ctx, options)) { |
402 | case -1: | |
42bd71d0 | 403 | return parse_options_usage(usagestr, options, arg, 1); |
07800601 IM |
404 | case -2: |
405 | goto unknown; | |
42bd71d0 NK |
406 | case -3: |
407 | goto exclusive; | |
83a0944f IM |
408 | default: |
409 | break; | |
07800601 IM |
410 | } |
411 | if (ctx->opt) | |
42bd71d0 | 412 | check_typos(arg, options); |
07800601 IM |
413 | while (ctx->opt) { |
414 | if (internal_help && *ctx->opt == 'h') | |
ac697625 NK |
415 | return usage_with_options_internal(usagestr, options, 0); |
416 | arg = ctx->opt; | |
07800601 IM |
417 | switch (parse_short_opt(ctx, options)) { |
418 | case -1: | |
ac697625 | 419 | return parse_options_usage(usagestr, options, arg, 1); |
07800601 IM |
420 | case -2: |
421 | /* fake a short option thing to hide the fact that we may have | |
422 | * started to parse aggregated stuff | |
423 | * | |
424 | * This is leaky, too bad. | |
425 | */ | |
426 | ctx->argv[0] = strdup(ctx->opt - 1); | |
427 | *(char *)ctx->argv[0] = '-'; | |
428 | goto unknown; | |
42bd71d0 NK |
429 | case -3: |
430 | goto exclusive; | |
83a0944f IM |
431 | default: |
432 | break; | |
07800601 IM |
433 | } |
434 | } | |
435 | continue; | |
436 | } | |
437 | ||
438 | if (!arg[2]) { /* "--" */ | |
439 | if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) { | |
440 | ctx->argc--; | |
441 | ctx->argv++; | |
442 | } | |
443 | break; | |
444 | } | |
445 | ||
42bd71d0 NK |
446 | arg += 2; |
447 | if (internal_help && !strcmp(arg, "help-all")) | |
07800601 | 448 | return usage_with_options_internal(usagestr, options, 1); |
42bd71d0 | 449 | if (internal_help && !strcmp(arg, "help")) |
ac697625 | 450 | return usage_with_options_internal(usagestr, options, 0); |
42bd71d0 | 451 | if (!strcmp(arg, "list-opts")) |
09a71b97 | 452 | return PARSE_OPT_LIST_OPTS; |
42bd71d0 | 453 | if (!strcmp(arg, "list-cmds")) |
09a71b97 | 454 | return PARSE_OPT_LIST_SUBCMDS; |
42bd71d0 | 455 | switch (parse_long_opt(ctx, arg, options)) { |
07800601 | 456 | case -1: |
42bd71d0 | 457 | return parse_options_usage(usagestr, options, arg, 0); |
07800601 IM |
458 | case -2: |
459 | goto unknown; | |
42bd71d0 NK |
460 | case -3: |
461 | excl_short_opt = 0; | |
462 | goto exclusive; | |
83a0944f IM |
463 | default: |
464 | break; | |
07800601 IM |
465 | } |
466 | continue; | |
467 | unknown: | |
468 | if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN)) | |
469 | return PARSE_OPT_UNKNOWN; | |
470 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
471 | ctx->opt = NULL; | |
472 | } | |
473 | return PARSE_OPT_DONE; | |
42bd71d0 NK |
474 | |
475 | exclusive: | |
476 | parse_options_usage(usagestr, options, arg, excl_short_opt); | |
477 | if ((excl_short_opt && ctx->excl_opt->short_name) || | |
478 | ctx->excl_opt->long_name == NULL) { | |
479 | char opt = ctx->excl_opt->short_name; | |
480 | parse_options_usage(NULL, options, &opt, 1); | |
481 | } else { | |
482 | parse_options_usage(NULL, options, ctx->excl_opt->long_name, 0); | |
483 | } | |
484 | return PARSE_OPT_HELP; | |
07800601 IM |
485 | } |
486 | ||
487 | int parse_options_end(struct parse_opt_ctx_t *ctx) | |
488 | { | |
489 | memmove(ctx->out + ctx->cpidx, ctx->argv, ctx->argc * sizeof(*ctx->out)); | |
490 | ctx->out[ctx->cpidx + ctx->argc] = NULL; | |
491 | return ctx->cpidx + ctx->argc; | |
492 | } | |
493 | ||
09a71b97 RR |
494 | int parse_options_subcommand(int argc, const char **argv, const struct option *options, |
495 | const char *const subcommands[], const char *usagestr[], int flags) | |
07800601 IM |
496 | { |
497 | struct parse_opt_ctx_t ctx; | |
498 | ||
56e6f602 DA |
499 | perf_header__set_cmdline(argc, argv); |
500 | ||
09a71b97 RR |
501 | /* build usage string if it's not provided */ |
502 | if (subcommands && !usagestr[0]) { | |
503 | struct strbuf buf = STRBUF_INIT; | |
504 | ||
505 | strbuf_addf(&buf, "perf %s [<options>] {", argv[0]); | |
506 | for (int i = 0; subcommands[i]; i++) { | |
507 | if (i) | |
508 | strbuf_addstr(&buf, "|"); | |
509 | strbuf_addstr(&buf, subcommands[i]); | |
510 | } | |
511 | strbuf_addstr(&buf, "}"); | |
512 | ||
513 | usagestr[0] = strdup(buf.buf); | |
514 | strbuf_release(&buf); | |
515 | } | |
516 | ||
07800601 IM |
517 | parse_options_start(&ctx, argc, argv, flags); |
518 | switch (parse_options_step(&ctx, options, usagestr)) { | |
519 | case PARSE_OPT_HELP: | |
520 | exit(129); | |
521 | case PARSE_OPT_DONE: | |
522 | break; | |
09a71b97 | 523 | case PARSE_OPT_LIST_OPTS: |
4d8061fa | 524 | while (options->type != OPTION_END) { |
3ef1e65c YS |
525 | if (options->long_name) |
526 | printf("--%s ", options->long_name); | |
4d8061fa NK |
527 | options++; |
528 | } | |
ed457520 | 529 | putchar('\n'); |
4d8061fa | 530 | exit(130); |
09a71b97 | 531 | case PARSE_OPT_LIST_SUBCMDS: |
3a03005f YS |
532 | if (subcommands) { |
533 | for (int i = 0; subcommands[i]; i++) | |
534 | printf("%s ", subcommands[i]); | |
535 | } | |
ed457520 | 536 | putchar('\n'); |
09a71b97 | 537 | exit(130); |
07800601 IM |
538 | default: /* PARSE_OPT_UNKNOWN */ |
539 | if (ctx.argv[0][1] == '-') { | |
540 | error("unknown option `%s'", ctx.argv[0] + 2); | |
541 | } else { | |
542 | error("unknown switch `%c'", *ctx.opt); | |
543 | } | |
544 | usage_with_options(usagestr, options); | |
545 | } | |
546 | ||
547 | return parse_options_end(&ctx); | |
548 | } | |
549 | ||
09a71b97 RR |
550 | int parse_options(int argc, const char **argv, const struct option *options, |
551 | const char * const usagestr[], int flags) | |
552 | { | |
553 | return parse_options_subcommand(argc, argv, options, NULL, | |
554 | (const char **) usagestr, flags); | |
555 | } | |
556 | ||
07800601 IM |
557 | #define USAGE_OPTS_WIDTH 24 |
558 | #define USAGE_GAP 2 | |
559 | ||
ac697625 NK |
560 | static void print_option_help(const struct option *opts, int full) |
561 | { | |
562 | size_t pos; | |
563 | int pad; | |
564 | ||
565 | if (opts->type == OPTION_GROUP) { | |
566 | fputc('\n', stderr); | |
567 | if (*opts->help) | |
568 | fprintf(stderr, "%s\n", opts->help); | |
569 | return; | |
570 | } | |
571 | if (!full && (opts->flags & PARSE_OPT_HIDDEN)) | |
572 | return; | |
d152d1be NK |
573 | if (opts->flags & PARSE_OPT_DISABLED) |
574 | return; | |
ac697625 NK |
575 | |
576 | pos = fprintf(stderr, " "); | |
577 | if (opts->short_name) | |
578 | pos += fprintf(stderr, "-%c", opts->short_name); | |
579 | else | |
580 | pos += fprintf(stderr, " "); | |
581 | ||
582 | if (opts->long_name && opts->short_name) | |
583 | pos += fprintf(stderr, ", "); | |
584 | if (opts->long_name) | |
585 | pos += fprintf(stderr, "--%s", opts->long_name); | |
586 | ||
587 | switch (opts->type) { | |
588 | case OPTION_ARGUMENT: | |
589 | break; | |
590 | case OPTION_LONG: | |
591 | case OPTION_U64: | |
592 | case OPTION_INTEGER: | |
593 | case OPTION_UINTEGER: | |
594 | if (opts->flags & PARSE_OPT_OPTARG) | |
595 | if (opts->long_name) | |
596 | pos += fprintf(stderr, "[=<n>]"); | |
597 | else | |
598 | pos += fprintf(stderr, "[<n>]"); | |
599 | else | |
600 | pos += fprintf(stderr, " <n>"); | |
601 | break; | |
602 | case OPTION_CALLBACK: | |
603 | if (opts->flags & PARSE_OPT_NOARG) | |
604 | break; | |
605 | /* FALLTHROUGH */ | |
606 | case OPTION_STRING: | |
607 | if (opts->argh) { | |
608 | if (opts->flags & PARSE_OPT_OPTARG) | |
609 | if (opts->long_name) | |
610 | pos += fprintf(stderr, "[=<%s>]", opts->argh); | |
611 | else | |
612 | pos += fprintf(stderr, "[<%s>]", opts->argh); | |
613 | else | |
614 | pos += fprintf(stderr, " <%s>", opts->argh); | |
615 | } else { | |
616 | if (opts->flags & PARSE_OPT_OPTARG) | |
617 | if (opts->long_name) | |
618 | pos += fprintf(stderr, "[=...]"); | |
619 | else | |
620 | pos += fprintf(stderr, "[...]"); | |
621 | else | |
622 | pos += fprintf(stderr, " ..."); | |
623 | } | |
624 | break; | |
625 | default: /* OPTION_{BIT,BOOLEAN,SET_UINT,SET_PTR} */ | |
626 | case OPTION_END: | |
627 | case OPTION_GROUP: | |
628 | case OPTION_BIT: | |
629 | case OPTION_BOOLEAN: | |
630 | case OPTION_INCR: | |
631 | case OPTION_SET_UINT: | |
632 | case OPTION_SET_PTR: | |
633 | break; | |
634 | } | |
635 | ||
636 | if (pos <= USAGE_OPTS_WIDTH) | |
637 | pad = USAGE_OPTS_WIDTH - pos; | |
638 | else { | |
639 | fputc('\n', stderr); | |
640 | pad = USAGE_OPTS_WIDTH; | |
641 | } | |
642 | fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help); | |
643 | } | |
644 | ||
07800601 IM |
645 | int usage_with_options_internal(const char * const *usagestr, |
646 | const struct option *opts, int full) | |
647 | { | |
648 | if (!usagestr) | |
649 | return PARSE_OPT_HELP; | |
650 | ||
502fc5c7 | 651 | fprintf(stderr, "\n usage: %s\n", *usagestr++); |
07800601 | 652 | while (*usagestr && **usagestr) |
6e6b754f | 653 | fprintf(stderr, " or: %s\n", *usagestr++); |
07800601 IM |
654 | while (*usagestr) { |
655 | fprintf(stderr, "%s%s\n", | |
656 | **usagestr ? " " : "", | |
657 | *usagestr); | |
658 | usagestr++; | |
659 | } | |
660 | ||
661 | if (opts->type != OPTION_GROUP) | |
662 | fputc('\n', stderr); | |
663 | ||
ac697625 NK |
664 | for ( ; opts->type != OPTION_END; opts++) |
665 | print_option_help(opts, full); | |
07800601 | 666 | |
07800601 IM |
667 | fputc('\n', stderr); |
668 | ||
669 | return PARSE_OPT_HELP; | |
670 | } | |
671 | ||
672 | void usage_with_options(const char * const *usagestr, | |
673 | const struct option *opts) | |
674 | { | |
478b0973 | 675 | exit_browser(false); |
07800601 IM |
676 | usage_with_options_internal(usagestr, opts, 0); |
677 | exit(129); | |
678 | } | |
679 | ||
680 | int parse_options_usage(const char * const *usagestr, | |
ac697625 NK |
681 | const struct option *opts, |
682 | const char *optstr, bool short_opt) | |
07800601 | 683 | { |
ac697625 | 684 | if (!usagestr) |
cc03c542 | 685 | goto opt; |
ac697625 NK |
686 | |
687 | fprintf(stderr, "\n usage: %s\n", *usagestr++); | |
688 | while (*usagestr && **usagestr) | |
689 | fprintf(stderr, " or: %s\n", *usagestr++); | |
690 | while (*usagestr) { | |
691 | fprintf(stderr, "%s%s\n", | |
692 | **usagestr ? " " : "", | |
693 | *usagestr); | |
694 | usagestr++; | |
695 | } | |
696 | fputc('\n', stderr); | |
697 | ||
cc03c542 | 698 | opt: |
ac697625 NK |
699 | for ( ; opts->type != OPTION_END; opts++) { |
700 | if (short_opt) { | |
701 | if (opts->short_name == *optstr) | |
702 | break; | |
703 | continue; | |
704 | } | |
705 | ||
706 | if (opts->long_name == NULL) | |
707 | continue; | |
708 | ||
709 | if (!prefixcmp(optstr, opts->long_name)) | |
710 | break; | |
711 | if (!prefixcmp(optstr, "no-") && | |
712 | !prefixcmp(optstr + 3, opts->long_name)) | |
713 | break; | |
714 | } | |
715 | ||
716 | if (opts->type != OPTION_END) | |
717 | print_option_help(opts, 0); | |
718 | ||
719 | return PARSE_OPT_HELP; | |
07800601 IM |
720 | } |
721 | ||
722 | ||
1d037ca1 IT |
723 | int parse_opt_verbosity_cb(const struct option *opt, |
724 | const char *arg __maybe_unused, | |
07800601 IM |
725 | int unset) |
726 | { | |
727 | int *target = opt->value; | |
728 | ||
729 | if (unset) | |
730 | /* --no-quiet, --no-verbose */ | |
731 | *target = 0; | |
732 | else if (opt->short_name == 'v') { | |
733 | if (*target >= 0) | |
734 | (*target)++; | |
735 | else | |
736 | *target = 1; | |
737 | } else { | |
738 | if (*target <= 0) | |
739 | (*target)--; | |
740 | else | |
741 | *target = -1; | |
742 | } | |
743 | return 0; | |
744 | } | |
d152d1be NK |
745 | |
746 | void set_option_flag(struct option *opts, int shortopt, const char *longopt, | |
747 | int flag) | |
748 | { | |
749 | for (; opts->type != OPTION_END; opts++) { | |
750 | if ((shortopt && opts->short_name == shortopt) || | |
751 | (opts->long_name && longopt && | |
752 | !strcmp(opts->long_name, longopt))) { | |
753 | opts->flags |= flag; | |
754 | break; | |
755 | } | |
756 | } | |
757 | } |