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-rw-r--r--tools/perf/util/parse-options.c218
1 files changed, 130 insertions, 88 deletions
diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c
index 2bc9e70df7e2..31f404a032a9 100644
--- a/tools/perf/util/parse-options.c
+++ b/tools/perf/util/parse-options.c
@@ -339,10 +339,10 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
339 if (arg[1] != '-') { 339 if (arg[1] != '-') {
340 ctx->opt = arg + 1; 340 ctx->opt = arg + 1;
341 if (internal_help && *ctx->opt == 'h') 341 if (internal_help && *ctx->opt == 'h')
342 return parse_options_usage(usagestr, options); 342 return usage_with_options_internal(usagestr, options, 0);
343 switch (parse_short_opt(ctx, options)) { 343 switch (parse_short_opt(ctx, options)) {
344 case -1: 344 case -1:
345 return parse_options_usage(usagestr, options); 345 return parse_options_usage(usagestr, options, arg + 1, 1);
346 case -2: 346 case -2:
347 goto unknown; 347 goto unknown;
348 default: 348 default:
@@ -352,10 +352,11 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
352 check_typos(arg + 1, options); 352 check_typos(arg + 1, options);
353 while (ctx->opt) { 353 while (ctx->opt) {
354 if (internal_help && *ctx->opt == 'h') 354 if (internal_help && *ctx->opt == 'h')
355 return parse_options_usage(usagestr, options); 355 return usage_with_options_internal(usagestr, options, 0);
356 arg = ctx->opt;
356 switch (parse_short_opt(ctx, options)) { 357 switch (parse_short_opt(ctx, options)) {
357 case -1: 358 case -1:
358 return parse_options_usage(usagestr, options); 359 return parse_options_usage(usagestr, options, arg, 1);
359 case -2: 360 case -2:
360 /* fake a short option thing to hide the fact that we may have 361 /* fake a short option thing to hide the fact that we may have
361 * started to parse aggregated stuff 362 * started to parse aggregated stuff
@@ -383,12 +384,12 @@ int parse_options_step(struct parse_opt_ctx_t *ctx,
383 if (internal_help && !strcmp(arg + 2, "help-all")) 384 if (internal_help && !strcmp(arg + 2, "help-all"))
384 return usage_with_options_internal(usagestr, options, 1); 385 return usage_with_options_internal(usagestr, options, 1);
385 if (internal_help && !strcmp(arg + 2, "help")) 386 if (internal_help && !strcmp(arg + 2, "help"))
386 return parse_options_usage(usagestr, options); 387 return usage_with_options_internal(usagestr, options, 0);
387 if (!strcmp(arg + 2, "list-opts")) 388 if (!strcmp(arg + 2, "list-opts"))
388 return PARSE_OPT_LIST; 389 return PARSE_OPT_LIST;
389 switch (parse_long_opt(ctx, arg + 2, options)) { 390 switch (parse_long_opt(ctx, arg + 2, options)) {
390 case -1: 391 case -1:
391 return parse_options_usage(usagestr, options); 392 return parse_options_usage(usagestr, options, arg + 2, 0);
392 case -2: 393 case -2:
393 goto unknown; 394 goto unknown;
394 default: 395 default:
@@ -445,6 +446,89 @@ int parse_options(int argc, const char **argv, const struct option *options,
445#define USAGE_OPTS_WIDTH 24 446#define USAGE_OPTS_WIDTH 24
446#define USAGE_GAP 2 447#define USAGE_GAP 2
447 448
449static void print_option_help(const struct option *opts, int full)
450{
451 size_t pos;
452 int pad;
453
454 if (opts->type == OPTION_GROUP) {
455 fputc('\n', stderr);
456 if (*opts->help)
457 fprintf(stderr, "%s\n", opts->help);
458 return;
459 }
460 if (!full && (opts->flags & PARSE_OPT_HIDDEN))
461 return;
462
463 pos = fprintf(stderr, " ");
464 if (opts->short_name)
465 pos += fprintf(stderr, "-%c", opts->short_name);
466 else
467 pos += fprintf(stderr, " ");
468
469 if (opts->long_name && opts->short_name)
470 pos += fprintf(stderr, ", ");
471 if (opts->long_name)
472 pos += fprintf(stderr, "--%s", opts->long_name);
473
474 switch (opts->type) {
475 case OPTION_ARGUMENT:
476 break;
477 case OPTION_LONG:
478 case OPTION_U64:
479 case OPTION_INTEGER:
480 case OPTION_UINTEGER:
481 if (opts->flags & PARSE_OPT_OPTARG)
482 if (opts->long_name)
483 pos += fprintf(stderr, "[=<n>]");
484 else
485 pos += fprintf(stderr, "[<n>]");
486 else
487 pos += fprintf(stderr, " <n>");
488 break;
489 case OPTION_CALLBACK:
490 if (opts->flags & PARSE_OPT_NOARG)
491 break;
492 /* FALLTHROUGH */
493 case OPTION_STRING:
494 if (opts->argh) {
495 if (opts->flags & PARSE_OPT_OPTARG)
496 if (opts->long_name)
497 pos += fprintf(stderr, "[=<%s>]", opts->argh);
498 else
499 pos += fprintf(stderr, "[<%s>]", opts->argh);
500 else
501 pos += fprintf(stderr, " <%s>", opts->argh);
502 } else {
503 if (opts->flags & PARSE_OPT_OPTARG)
504 if (opts->long_name)
505 pos += fprintf(stderr, "[=...]");
506 else
507 pos += fprintf(stderr, "[...]");
508 else
509 pos += fprintf(stderr, " ...");
510 }
511 break;
512 default: /* OPTION_{BIT,BOOLEAN,SET_UINT,SET_PTR} */
513 case OPTION_END:
514 case OPTION_GROUP:
515 case OPTION_BIT:
516 case OPTION_BOOLEAN:
517 case OPTION_INCR:
518 case OPTION_SET_UINT:
519 case OPTION_SET_PTR:
520 break;
521 }
522
523 if (pos <= USAGE_OPTS_WIDTH)
524 pad = USAGE_OPTS_WIDTH - pos;
525 else {
526 fputc('\n', stderr);
527 pad = USAGE_OPTS_WIDTH;
528 }
529 fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
530}
531
448int usage_with_options_internal(const char * const *usagestr, 532int usage_with_options_internal(const char * const *usagestr,
449 const struct option *opts, int full) 533 const struct option *opts, int full)
450{ 534{
@@ -464,87 +548,9 @@ int usage_with_options_internal(const char * const *usagestr,
464 if (opts->type != OPTION_GROUP) 548 if (opts->type != OPTION_GROUP)
465 fputc('\n', stderr); 549 fputc('\n', stderr);
466 550
467 for (; opts->type != OPTION_END; opts++) { 551 for ( ; opts->type != OPTION_END; opts++)
468 size_t pos; 552 print_option_help(opts, full);
469 int pad;
470
471 if (opts->type == OPTION_GROUP) {
472 fputc('\n', stderr);
473 if (*opts->help)
474 fprintf(stderr, "%s\n", opts->help);
475 continue;
476 }
477 if (!full && (opts->flags & PARSE_OPT_HIDDEN))
478 continue;
479
480 pos = fprintf(stderr, " ");
481 if (opts->short_name)
482 pos += fprintf(stderr, "-%c", opts->short_name);
483 else
484 pos += fprintf(stderr, " ");
485
486 if (opts->long_name && opts->short_name)
487 pos += fprintf(stderr, ", ");
488 if (opts->long_name)
489 pos += fprintf(stderr, "--%s", opts->long_name);
490
491 switch (opts->type) {
492 case OPTION_ARGUMENT:
493 break;
494 case OPTION_LONG:
495 case OPTION_U64:
496 case OPTION_INTEGER:
497 case OPTION_UINTEGER:
498 if (opts->flags & PARSE_OPT_OPTARG)
499 if (opts->long_name)
500 pos += fprintf(stderr, "[=<n>]");
501 else
502 pos += fprintf(stderr, "[<n>]");
503 else
504 pos += fprintf(stderr, " <n>");
505 break;
506 case OPTION_CALLBACK:
507 if (opts->flags & PARSE_OPT_NOARG)
508 break;
509 /* FALLTHROUGH */
510 case OPTION_STRING:
511 if (opts->argh) {
512 if (opts->flags & PARSE_OPT_OPTARG)
513 if (opts->long_name)
514 pos += fprintf(stderr, "[=<%s>]", opts->argh);
515 else
516 pos += fprintf(stderr, "[<%s>]", opts->argh);
517 else
518 pos += fprintf(stderr, " <%s>", opts->argh);
519 } else {
520 if (opts->flags & PARSE_OPT_OPTARG)
521 if (opts->long_name)
522 pos += fprintf(stderr, "[=...]");
523 else
524 pos += fprintf(stderr, "[...]");
525 else
526 pos += fprintf(stderr, " ...");
527 }
528 break;
529 default: /* OPTION_{BIT,BOOLEAN,SET_UINT,SET_PTR} */
530 case OPTION_END:
531 case OPTION_GROUP:
532 case OPTION_BIT:
533 case OPTION_BOOLEAN:
534 case OPTION_INCR:
535 case OPTION_SET_UINT:
536 case OPTION_SET_PTR:
537 break;
538 }
539 553
540 if (pos <= USAGE_OPTS_WIDTH)
541 pad = USAGE_OPTS_WIDTH - pos;
542 else {
543 fputc('\n', stderr);
544 pad = USAGE_OPTS_WIDTH;
545 }
546 fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help);
547 }
548 fputc('\n', stderr); 554 fputc('\n', stderr);
549 555
550 return PARSE_OPT_HELP; 556 return PARSE_OPT_HELP;
@@ -559,9 +565,45 @@ void usage_with_options(const char * const *usagestr,
559} 565}
560 566
561int parse_options_usage(const char * const *usagestr, 567int parse_options_usage(const char * const *usagestr,
562 const struct option *opts) 568 const struct option *opts,
569 const char *optstr, bool short_opt)
563{ 570{
564 return usage_with_options_internal(usagestr, opts, 0); 571 if (!usagestr)
572 goto opt;
573
574 fprintf(stderr, "\n usage: %s\n", *usagestr++);
575 while (*usagestr && **usagestr)
576 fprintf(stderr, " or: %s\n", *usagestr++);
577 while (*usagestr) {
578 fprintf(stderr, "%s%s\n",
579 **usagestr ? " " : "",
580 *usagestr);
581 usagestr++;
582 }
583 fputc('\n', stderr);
584
585opt:
586 for ( ; opts->type != OPTION_END; opts++) {
587 if (short_opt) {
588 if (opts->short_name == *optstr)
589 break;
590 continue;
591 }
592
593 if (opts->long_name == NULL)
594 continue;
595
596 if (!prefixcmp(optstr, opts->long_name))
597 break;
598 if (!prefixcmp(optstr, "no-") &&
599 !prefixcmp(optstr + 3, opts->long_name))
600 break;
601 }
602
603 if (opts->type != OPTION_END)
604 print_option_help(opts, 0);
605
606 return PARSE_OPT_HELP;
565} 607}
566 608
567 609
generated by cgit v1.2.2 (git 2.25.0) at 2025-05-30 16:12:21 -0400