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1 | #include "git-compat-util.h" | |
2 | #include "parse-options.h" | |
3 | #include "cache.h" | |
4 | #include "commit.h" | |
5 | ||
6 | static int parse_options_usage(const char * const *usagestr, | |
7 | const struct option *opts); | |
8 | ||
9 | #define OPT_SHORT 1 | |
10 | #define OPT_UNSET 2 | |
11 | ||
12 | static int opterror(const struct option *opt, const char *reason, int flags) | |
13 | { | |
14 | if (flags & OPT_SHORT) | |
15 | return error("switch `%c' %s", opt->short_name, reason); | |
16 | if (flags & OPT_UNSET) | |
17 | return error("option `no-%s' %s", opt->long_name, reason); | |
18 | return error("option `%s' %s", opt->long_name, reason); | |
19 | } | |
20 | ||
21 | static int get_arg(struct parse_opt_ctx_t *p, const struct option *opt, | |
22 | int flags, const char **arg) | |
23 | { | |
24 | if (p->opt) { | |
25 | *arg = p->opt; | |
26 | p->opt = NULL; | |
27 | } else if (p->argc == 1 && (opt->flags & PARSE_OPT_LASTARG_DEFAULT)) { | |
28 | *arg = (const char *)opt->defval; | |
29 | } else if (p->argc > 1) { | |
30 | p->argc--; | |
31 | *arg = *++p->argv; | |
32 | } else | |
33 | return opterror(opt, "requires a value", flags); | |
34 | return 0; | |
35 | } | |
36 | ||
37 | static void fix_filename(const char *prefix, const char **file) | |
38 | { | |
39 | if (!file || !*file || !prefix || is_absolute_path(*file) | |
40 | || !strcmp("-", *file)) | |
41 | return; | |
42 | *file = xstrdup(prefix_filename(prefix, strlen(prefix), *file)); | |
43 | } | |
44 | ||
45 | static int get_value(struct parse_opt_ctx_t *p, | |
46 | const struct option *opt, int flags) | |
47 | { | |
48 | const char *s, *arg; | |
49 | const int unset = flags & OPT_UNSET; | |
50 | int err; | |
51 | ||
52 | if (unset && p->opt) | |
53 | return opterror(opt, "takes no value", flags); | |
54 | if (unset && (opt->flags & PARSE_OPT_NONEG)) | |
55 | return opterror(opt, "isn't available", flags); | |
56 | ||
57 | if (!(flags & OPT_SHORT) && p->opt) { | |
58 | switch (opt->type) { | |
59 | case OPTION_CALLBACK: | |
60 | if (!(opt->flags & PARSE_OPT_NOARG)) | |
61 | break; | |
62 | /* FALLTHROUGH */ | |
63 | case OPTION_BOOLEAN: | |
64 | case OPTION_BIT: | |
65 | case OPTION_NEGBIT: | |
66 | case OPTION_SET_INT: | |
67 | case OPTION_SET_PTR: | |
68 | return opterror(opt, "takes no value", flags); | |
69 | default: | |
70 | break; | |
71 | } | |
72 | } | |
73 | ||
74 | switch (opt->type) { | |
75 | case OPTION_BIT: | |
76 | if (unset) | |
77 | *(int *)opt->value &= ~opt->defval; | |
78 | else | |
79 | *(int *)opt->value |= opt->defval; | |
80 | return 0; | |
81 | ||
82 | case OPTION_NEGBIT: | |
83 | if (unset) | |
84 | *(int *)opt->value |= opt->defval; | |
85 | else | |
86 | *(int *)opt->value &= ~opt->defval; | |
87 | return 0; | |
88 | ||
89 | case OPTION_BOOLEAN: | |
90 | *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1; | |
91 | return 0; | |
92 | ||
93 | case OPTION_SET_INT: | |
94 | *(int *)opt->value = unset ? 0 : opt->defval; | |
95 | return 0; | |
96 | ||
97 | case OPTION_SET_PTR: | |
98 | *(void **)opt->value = unset ? NULL : (void *)opt->defval; | |
99 | return 0; | |
100 | ||
101 | case OPTION_STRING: | |
102 | if (unset) | |
103 | *(const char **)opt->value = NULL; | |
104 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
105 | *(const char **)opt->value = (const char *)opt->defval; | |
106 | else | |
107 | return get_arg(p, opt, flags, (const char **)opt->value); | |
108 | return 0; | |
109 | ||
110 | case OPTION_FILENAME: | |
111 | err = 0; | |
112 | if (unset) | |
113 | *(const char **)opt->value = NULL; | |
114 | else if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
115 | *(const char **)opt->value = (const char *)opt->defval; | |
116 | else | |
117 | err = get_arg(p, opt, flags, (const char **)opt->value); | |
118 | ||
119 | if (!err) | |
120 | fix_filename(p->prefix, (const char **)opt->value); | |
121 | return err; | |
122 | ||
123 | case OPTION_CALLBACK: | |
124 | if (unset) | |
125 | return (*opt->callback)(opt, NULL, 1) ? (-1) : 0; | |
126 | if (opt->flags & PARSE_OPT_NOARG) | |
127 | return (*opt->callback)(opt, NULL, 0) ? (-1) : 0; | |
128 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) | |
129 | return (*opt->callback)(opt, NULL, 0) ? (-1) : 0; | |
130 | if (get_arg(p, opt, flags, &arg)) | |
131 | return -1; | |
132 | return (*opt->callback)(opt, arg, 0) ? (-1) : 0; | |
133 | ||
134 | case OPTION_INTEGER: | |
135 | if (unset) { | |
136 | *(int *)opt->value = 0; | |
137 | return 0; | |
138 | } | |
139 | if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { | |
140 | *(int *)opt->value = opt->defval; | |
141 | return 0; | |
142 | } | |
143 | if (get_arg(p, opt, flags, &arg)) | |
144 | return -1; | |
145 | *(int *)opt->value = strtol(arg, (char **)&s, 10); | |
146 | if (*s) | |
147 | return opterror(opt, "expects a numerical value", flags); | |
148 | return 0; | |
149 | ||
150 | default: | |
151 | die("should not happen, someone must be hit on the forehead"); | |
152 | } | |
153 | } | |
154 | ||
155 | static int parse_short_opt(struct parse_opt_ctx_t *p, const struct option *options) | |
156 | { | |
157 | const struct option *numopt = NULL; | |
158 | ||
159 | for (; options->type != OPTION_END; options++) { | |
160 | if (options->short_name == *p->opt) { | |
161 | p->opt = p->opt[1] ? p->opt + 1 : NULL; | |
162 | return get_value(p, options, OPT_SHORT); | |
163 | } | |
164 | ||
165 | /* | |
166 | * Handle the numerical option later, explicit one-digit | |
167 | * options take precedence over it. | |
168 | */ | |
169 | if (options->type == OPTION_NUMBER) | |
170 | numopt = options; | |
171 | } | |
172 | if (numopt && isdigit(*p->opt)) { | |
173 | size_t len = 1; | |
174 | char *arg; | |
175 | int rc; | |
176 | ||
177 | while (isdigit(p->opt[len])) | |
178 | len++; | |
179 | arg = xmemdupz(p->opt, len); | |
180 | p->opt = p->opt[len] ? p->opt + len : NULL; | |
181 | rc = (*numopt->callback)(numopt, arg, 0) ? (-1) : 0; | |
182 | free(arg); | |
183 | return rc; | |
184 | } | |
185 | return -2; | |
186 | } | |
187 | ||
188 | static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg, | |
189 | const struct option *options) | |
190 | { | |
191 | const char *arg_end = strchr(arg, '='); | |
192 | const struct option *abbrev_option = NULL, *ambiguous_option = NULL; | |
193 | int abbrev_flags = 0, ambiguous_flags = 0; | |
194 | ||
195 | if (!arg_end) | |
196 | arg_end = arg + strlen(arg); | |
197 | ||
198 | for (; options->type != OPTION_END; options++) { | |
199 | const char *rest; | |
200 | int flags = 0; | |
201 | ||
202 | if (!options->long_name) | |
203 | continue; | |
204 | ||
205 | rest = skip_prefix(arg, options->long_name); | |
206 | if (options->type == OPTION_ARGUMENT) { | |
207 | if (!rest) | |
208 | continue; | |
209 | if (*rest == '=') | |
210 | return opterror(options, "takes no value", flags); | |
211 | if (*rest) | |
212 | continue; | |
213 | p->out[p->cpidx++] = arg - 2; | |
214 | return 0; | |
215 | } | |
216 | if (!rest) { | |
217 | /* abbreviated? */ | |
218 | if (!strncmp(options->long_name, arg, arg_end - arg)) { | |
219 | is_abbreviated: | |
220 | if (abbrev_option) { | |
221 | /* | |
222 | * If this is abbreviated, it is | |
223 | * ambiguous. So when there is no | |
224 | * exact match later, we need to | |
225 | * error out. | |
226 | */ | |
227 | ambiguous_option = abbrev_option; | |
228 | ambiguous_flags = abbrev_flags; | |
229 | } | |
230 | if (!(flags & OPT_UNSET) && *arg_end) | |
231 | p->opt = arg_end + 1; | |
232 | abbrev_option = options; | |
233 | abbrev_flags = flags; | |
234 | continue; | |
235 | } | |
236 | /* negation allowed? */ | |
237 | if (options->flags & PARSE_OPT_NONEG) | |
238 | continue; | |
239 | /* negated and abbreviated very much? */ | |
240 | if (!prefixcmp("no-", arg)) { | |
241 | flags |= OPT_UNSET; | |
242 | goto is_abbreviated; | |
243 | } | |
244 | /* negated? */ | |
245 | if (strncmp(arg, "no-", 3)) | |
246 | continue; | |
247 | flags |= OPT_UNSET; | |
248 | rest = skip_prefix(arg + 3, options->long_name); | |
249 | /* abbreviated and negated? */ | |
250 | if (!rest && !prefixcmp(options->long_name, arg + 3)) | |
251 | goto is_abbreviated; | |
252 | if (!rest) | |
253 | continue; | |
254 | } | |
255 | if (*rest) { | |
256 | if (*rest != '=') | |
257 | continue; | |
258 | p->opt = rest + 1; | |
259 | } | |
260 | return get_value(p, options, flags); | |
261 | } | |
262 | ||
263 | if (ambiguous_option) | |
264 | return error("Ambiguous option: %s " | |
265 | "(could be --%s%s or --%s%s)", | |
266 | arg, | |
267 | (ambiguous_flags & OPT_UNSET) ? "no-" : "", | |
268 | ambiguous_option->long_name, | |
269 | (abbrev_flags & OPT_UNSET) ? "no-" : "", | |
270 | abbrev_option->long_name); | |
271 | if (abbrev_option) | |
272 | return get_value(p, abbrev_option, abbrev_flags); | |
273 | return -2; | |
274 | } | |
275 | ||
276 | static int parse_nodash_opt(struct parse_opt_ctx_t *p, const char *arg, | |
277 | const struct option *options) | |
278 | { | |
279 | for (; options->type != OPTION_END; options++) { | |
280 | if (!(options->flags & PARSE_OPT_NODASH)) | |
281 | continue; | |
282 | if ((options->flags & PARSE_OPT_OPTARG) || | |
283 | !(options->flags & PARSE_OPT_NOARG)) | |
284 | die("BUG: dashless options don't support arguments"); | |
285 | if (!(options->flags & PARSE_OPT_NONEG)) | |
286 | die("BUG: dashless options don't support negation"); | |
287 | if (options->long_name) | |
288 | die("BUG: dashless options can't be long"); | |
289 | if (options->short_name == arg[0] && arg[1] == '\0') | |
290 | return get_value(p, options, OPT_SHORT); | |
291 | } | |
292 | return -2; | |
293 | } | |
294 | ||
295 | static void check_typos(const char *arg, const struct option *options) | |
296 | { | |
297 | if (strlen(arg) < 3) | |
298 | return; | |
299 | ||
300 | if (!prefixcmp(arg, "no-")) { | |
301 | error ("did you mean `--%s` (with two dashes ?)", arg); | |
302 | exit(129); | |
303 | } | |
304 | ||
305 | for (; options->type != OPTION_END; options++) { | |
306 | if (!options->long_name) | |
307 | continue; | |
308 | if (!prefixcmp(options->long_name, arg)) { | |
309 | error ("did you mean `--%s` (with two dashes ?)", arg); | |
310 | exit(129); | |
311 | } | |
312 | } | |
313 | } | |
314 | ||
315 | static void parse_options_check(const struct option *opts) | |
316 | { | |
317 | int err = 0; | |
318 | ||
319 | for (; opts->type != OPTION_END; opts++) { | |
320 | if ((opts->flags & PARSE_OPT_LASTARG_DEFAULT) && | |
321 | (opts->flags & PARSE_OPT_OPTARG)) { | |
322 | if (opts->long_name) { | |
323 | error("`--%s` uses incompatible flags " | |
324 | "LASTARG_DEFAULT and OPTARG", opts->long_name); | |
325 | } else { | |
326 | error("`-%c` uses incompatible flags " | |
327 | "LASTARG_DEFAULT and OPTARG", opts->short_name); | |
328 | } | |
329 | err |= 1; | |
330 | } | |
331 | } | |
332 | ||
333 | if (err) | |
334 | exit(129); | |
335 | } | |
336 | ||
337 | void parse_options_start(struct parse_opt_ctx_t *ctx, | |
338 | int argc, const char **argv, const char *prefix, | |
339 | int flags) | |
340 | { | |
341 | memset(ctx, 0, sizeof(*ctx)); | |
342 | ctx->argc = argc - 1; | |
343 | ctx->argv = argv + 1; | |
344 | ctx->out = argv; | |
345 | ctx->prefix = prefix; | |
346 | ctx->cpidx = ((flags & PARSE_OPT_KEEP_ARGV0) != 0); | |
347 | ctx->flags = flags; | |
348 | if ((flags & PARSE_OPT_KEEP_UNKNOWN) && | |
349 | (flags & PARSE_OPT_STOP_AT_NON_OPTION)) | |
350 | die("STOP_AT_NON_OPTION and KEEP_UNKNOWN don't go together"); | |
351 | } | |
352 | ||
353 | static int usage_with_options_internal(const char * const *, | |
354 | const struct option *, int); | |
355 | ||
356 | int parse_options_step(struct parse_opt_ctx_t *ctx, | |
357 | const struct option *options, | |
358 | const char * const usagestr[]) | |
359 | { | |
360 | int internal_help = !(ctx->flags & PARSE_OPT_NO_INTERNAL_HELP); | |
361 | ||
362 | parse_options_check(options); | |
363 | ||
364 | /* we must reset ->opt, unknown short option leave it dangling */ | |
365 | ctx->opt = NULL; | |
366 | ||
367 | for (; ctx->argc; ctx->argc--, ctx->argv++) { | |
368 | const char *arg = ctx->argv[0]; | |
369 | ||
370 | if (*arg != '-' || !arg[1]) { | |
371 | if (parse_nodash_opt(ctx, arg, options) == 0) | |
372 | continue; | |
373 | if (ctx->flags & PARSE_OPT_STOP_AT_NON_OPTION) | |
374 | break; | |
375 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
376 | continue; | |
377 | } | |
378 | ||
379 | if (arg[1] != '-') { | |
380 | ctx->opt = arg + 1; | |
381 | if (internal_help && *ctx->opt == 'h') | |
382 | return parse_options_usage(usagestr, options); | |
383 | switch (parse_short_opt(ctx, options)) { | |
384 | case -1: | |
385 | return parse_options_usage(usagestr, options); | |
386 | case -2: | |
387 | goto unknown; | |
388 | } | |
389 | if (ctx->opt) | |
390 | check_typos(arg + 1, options); | |
391 | while (ctx->opt) { | |
392 | if (internal_help && *ctx->opt == 'h') | |
393 | return parse_options_usage(usagestr, options); | |
394 | switch (parse_short_opt(ctx, options)) { | |
395 | case -1: | |
396 | return parse_options_usage(usagestr, options); | |
397 | case -2: | |
398 | /* fake a short option thing to hide the fact that we may have | |
399 | * started to parse aggregated stuff | |
400 | * | |
401 | * This is leaky, too bad. | |
402 | */ | |
403 | ctx->argv[0] = xstrdup(ctx->opt - 1); | |
404 | *(char *)ctx->argv[0] = '-'; | |
405 | goto unknown; | |
406 | } | |
407 | } | |
408 | continue; | |
409 | } | |
410 | ||
411 | if (!arg[2]) { /* "--" */ | |
412 | if (!(ctx->flags & PARSE_OPT_KEEP_DASHDASH)) { | |
413 | ctx->argc--; | |
414 | ctx->argv++; | |
415 | } | |
416 | break; | |
417 | } | |
418 | ||
419 | if (internal_help && !strcmp(arg + 2, "help-all")) | |
420 | return usage_with_options_internal(usagestr, options, 1); | |
421 | if (internal_help && !strcmp(arg + 2, "help")) | |
422 | return parse_options_usage(usagestr, options); | |
423 | switch (parse_long_opt(ctx, arg + 2, options)) { | |
424 | case -1: | |
425 | return parse_options_usage(usagestr, options); | |
426 | case -2: | |
427 | goto unknown; | |
428 | } | |
429 | continue; | |
430 | unknown: | |
431 | if (!(ctx->flags & PARSE_OPT_KEEP_UNKNOWN)) | |
432 | return PARSE_OPT_UNKNOWN; | |
433 | ctx->out[ctx->cpidx++] = ctx->argv[0]; | |
434 | ctx->opt = NULL; | |
435 | } | |
436 | return PARSE_OPT_DONE; | |
437 | } | |
438 | ||
439 | int parse_options_end(struct parse_opt_ctx_t *ctx) | |
440 | { | |
441 | memmove(ctx->out + ctx->cpidx, ctx->argv, ctx->argc * sizeof(*ctx->out)); | |
442 | ctx->out[ctx->cpidx + ctx->argc] = NULL; | |
443 | return ctx->cpidx + ctx->argc; | |
444 | } | |
445 | ||
446 | int parse_options(int argc, const char **argv, const char *prefix, | |
447 | const struct option *options, const char * const usagestr[], | |
448 | int flags) | |
449 | { | |
450 | struct parse_opt_ctx_t ctx; | |
451 | ||
452 | parse_options_start(&ctx, argc, argv, prefix, flags); | |
453 | switch (parse_options_step(&ctx, options, usagestr)) { | |
454 | case PARSE_OPT_HELP: | |
455 | exit(129); | |
456 | case PARSE_OPT_DONE: | |
457 | break; | |
458 | default: /* PARSE_OPT_UNKNOWN */ | |
459 | if (ctx.argv[0][1] == '-') { | |
460 | error("unknown option `%s'", ctx.argv[0] + 2); | |
461 | } else { | |
462 | error("unknown switch `%c'", *ctx.opt); | |
463 | } | |
464 | usage_with_options(usagestr, options); | |
465 | } | |
466 | ||
467 | return parse_options_end(&ctx); | |
468 | } | |
469 | ||
470 | static int usage_argh(const struct option *opts) | |
471 | { | |
472 | const char *s; | |
473 | int literal = (opts->flags & PARSE_OPT_LITERAL_ARGHELP) || !opts->argh; | |
474 | if (opts->flags & PARSE_OPT_OPTARG) | |
475 | if (opts->long_name) | |
476 | s = literal ? "[=%s]" : "[=<%s>]"; | |
477 | else | |
478 | s = literal ? "[%s]" : "[<%s>]"; | |
479 | else | |
480 | s = literal ? " %s" : " <%s>"; | |
481 | return fprintf(stderr, s, opts->argh ? opts->argh : "..."); | |
482 | } | |
483 | ||
484 | #define USAGE_OPTS_WIDTH 24 | |
485 | #define USAGE_GAP 2 | |
486 | ||
487 | static int usage_with_options_internal(const char * const *usagestr, | |
488 | const struct option *opts, int full) | |
489 | { | |
490 | if (!usagestr) | |
491 | return PARSE_OPT_HELP; | |
492 | ||
493 | fprintf(stderr, "usage: %s\n", *usagestr++); | |
494 | while (*usagestr && **usagestr) | |
495 | fprintf(stderr, " or: %s\n", *usagestr++); | |
496 | while (*usagestr) { | |
497 | fprintf(stderr, "%s%s\n", | |
498 | **usagestr ? " " : "", | |
499 | *usagestr); | |
500 | usagestr++; | |
501 | } | |
502 | ||
503 | if (opts->type != OPTION_GROUP) | |
504 | fputc('\n', stderr); | |
505 | ||
506 | for (; opts->type != OPTION_END; opts++) { | |
507 | size_t pos; | |
508 | int pad; | |
509 | ||
510 | if (opts->type == OPTION_GROUP) { | |
511 | fputc('\n', stderr); | |
512 | if (*opts->help) | |
513 | fprintf(stderr, "%s\n", opts->help); | |
514 | continue; | |
515 | } | |
516 | if (!full && (opts->flags & PARSE_OPT_HIDDEN)) | |
517 | continue; | |
518 | ||
519 | pos = fprintf(stderr, " "); | |
520 | if (opts->short_name && !(opts->flags & PARSE_OPT_NEGHELP)) { | |
521 | if (opts->flags & PARSE_OPT_NODASH) | |
522 | pos += fprintf(stderr, "%c", opts->short_name); | |
523 | else | |
524 | pos += fprintf(stderr, "-%c", opts->short_name); | |
525 | } | |
526 | if (opts->long_name && opts->short_name) | |
527 | pos += fprintf(stderr, ", "); | |
528 | if (opts->long_name) | |
529 | pos += fprintf(stderr, "--%s%s", | |
530 | (opts->flags & PARSE_OPT_NEGHELP) ? "no-" : "", | |
531 | opts->long_name); | |
532 | if (opts->type == OPTION_NUMBER) | |
533 | pos += fprintf(stderr, "-NUM"); | |
534 | ||
535 | if (!(opts->flags & PARSE_OPT_NOARG)) | |
536 | pos += usage_argh(opts); | |
537 | ||
538 | if (pos <= USAGE_OPTS_WIDTH) | |
539 | pad = USAGE_OPTS_WIDTH - pos; | |
540 | else { | |
541 | fputc('\n', stderr); | |
542 | pad = USAGE_OPTS_WIDTH; | |
543 | } | |
544 | fprintf(stderr, "%*s%s\n", pad + USAGE_GAP, "", opts->help); | |
545 | } | |
546 | fputc('\n', stderr); | |
547 | ||
548 | return PARSE_OPT_HELP; | |
549 | } | |
550 | ||
551 | void usage_with_options(const char * const *usagestr, | |
552 | const struct option *opts) | |
553 | { | |
554 | usage_with_options_internal(usagestr, opts, 0); | |
555 | exit(129); | |
556 | } | |
557 | ||
558 | void usage_msg_opt(const char *msg, | |
559 | const char * const *usagestr, | |
560 | const struct option *options) | |
561 | { | |
562 | fprintf(stderr, "%s\n\n", msg); | |
563 | usage_with_options(usagestr, options); | |
564 | } | |
565 | ||
566 | static int parse_options_usage(const char * const *usagestr, | |
567 | const struct option *opts) | |
568 | { | |
569 | return usage_with_options_internal(usagestr, opts, 0); | |
570 | } | |
571 | ||
572 | ||
573 | /*----- some often used options -----*/ | |
574 | #include "cache.h" | |
575 | ||
576 | int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset) | |
577 | { | |
578 | int v; | |
579 | ||
580 | if (!arg) { | |
581 | v = unset ? 0 : DEFAULT_ABBREV; | |
582 | } else { | |
583 | v = strtol(arg, (char **)&arg, 10); | |
584 | if (*arg) | |
585 | return opterror(opt, "expects a numerical value", 0); | |
586 | if (v && v < MINIMUM_ABBREV) | |
587 | v = MINIMUM_ABBREV; | |
588 | else if (v > 40) | |
589 | v = 40; | |
590 | } | |
591 | *(int *)(opt->value) = v; | |
592 | return 0; | |
593 | } | |
594 | ||
595 | int parse_opt_approxidate_cb(const struct option *opt, const char *arg, | |
596 | int unset) | |
597 | { | |
598 | *(unsigned long *)(opt->value) = approxidate(arg); | |
599 | return 0; | |
600 | } | |
601 | ||
602 | int parse_opt_verbosity_cb(const struct option *opt, const char *arg, | |
603 | int unset) | |
604 | { | |
605 | int *target = opt->value; | |
606 | ||
607 | if (unset) | |
608 | /* --no-quiet, --no-verbose */ | |
609 | *target = 0; | |
610 | else if (opt->short_name == 'v') { | |
611 | if (*target >= 0) | |
612 | (*target)++; | |
613 | else | |
614 | *target = 1; | |
615 | } else { | |
616 | if (*target <= 0) | |
617 | (*target)--; | |
618 | else | |
619 | *target = -1; | |
620 | } | |
621 | return 0; | |
622 | } | |
623 | ||
624 | int parse_opt_with_commit(const struct option *opt, const char *arg, int unset) | |
625 | { | |
626 | unsigned char sha1[20]; | |
627 | struct commit *commit; | |
628 | ||
629 | if (!arg) | |
630 | return -1; | |
631 | if (get_sha1(arg, sha1)) | |
632 | return error("malformed object name %s", arg); | |
633 | commit = lookup_commit_reference(sha1); | |
634 | if (!commit) | |
635 | return error("no such commit %s", arg); | |
636 | commit_list_insert(commit, opt->value); | |
637 | return 0; | |
638 | } | |
639 | ||
640 | int parse_opt_tertiary(const struct option *opt, const char *arg, int unset) | |
641 | { | |
642 | int *target = opt->value; | |
643 | *target = unset ? 2 : 1; | |
644 | return 0; | |
645 | } |