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1 | /* | |
2 | * rev-parse.c | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | */ | |
6 | #include "cache.h" | |
7 | #include "config.h" | |
8 | #include "commit.h" | |
9 | #include "refs.h" | |
10 | #include "quote.h" | |
11 | #include "builtin.h" | |
12 | #include "parse-options.h" | |
13 | #include "diff.h" | |
14 | #include "revision.h" | |
15 | #include "split-index.h" | |
16 | #include "submodule.h" | |
17 | ||
18 | #define DO_REVS 1 | |
19 | #define DO_NOREV 2 | |
20 | #define DO_FLAGS 4 | |
21 | #define DO_NONFLAGS 8 | |
22 | static int filter = ~0; | |
23 | ||
24 | static const char *def; | |
25 | ||
26 | #define NORMAL 0 | |
27 | #define REVERSED 1 | |
28 | static int show_type = NORMAL; | |
29 | ||
30 | #define SHOW_SYMBOLIC_ASIS 1 | |
31 | #define SHOW_SYMBOLIC_FULL 2 | |
32 | static int symbolic; | |
33 | static int abbrev; | |
34 | static int abbrev_ref; | |
35 | static int abbrev_ref_strict; | |
36 | static int output_sq; | |
37 | ||
38 | static int stuck_long; | |
39 | static struct string_list *ref_excludes; | |
40 | ||
41 | /* | |
42 | * Some arguments are relevant "revision" arguments, | |
43 | * others are about output format or other details. | |
44 | * This sorts it all out. | |
45 | */ | |
46 | static int is_rev_argument(const char *arg) | |
47 | { | |
48 | static const char *rev_args[] = { | |
49 | "--all", | |
50 | "--bisect", | |
51 | "--dense", | |
52 | "--branches=", | |
53 | "--branches", | |
54 | "--header", | |
55 | "--ignore-missing", | |
56 | "--max-age=", | |
57 | "--max-count=", | |
58 | "--min-age=", | |
59 | "--no-merges", | |
60 | "--min-parents=", | |
61 | "--no-min-parents", | |
62 | "--max-parents=", | |
63 | "--no-max-parents", | |
64 | "--objects", | |
65 | "--objects-edge", | |
66 | "--parents", | |
67 | "--pretty", | |
68 | "--remotes=", | |
69 | "--remotes", | |
70 | "--glob=", | |
71 | "--sparse", | |
72 | "--tags=", | |
73 | "--tags", | |
74 | "--topo-order", | |
75 | "--date-order", | |
76 | "--unpacked", | |
77 | NULL | |
78 | }; | |
79 | const char **p = rev_args; | |
80 | ||
81 | /* accept -<digit>, like traditional "head" */ | |
82 | if ((*arg == '-') && isdigit(arg[1])) | |
83 | return 1; | |
84 | ||
85 | for (;;) { | |
86 | const char *str = *p++; | |
87 | int len; | |
88 | if (!str) | |
89 | return 0; | |
90 | len = strlen(str); | |
91 | if (!strcmp(arg, str) || | |
92 | (str[len-1] == '=' && !strncmp(arg, str, len))) | |
93 | return 1; | |
94 | } | |
95 | } | |
96 | ||
97 | /* Output argument as a string, either SQ or normal */ | |
98 | static void show(const char *arg) | |
99 | { | |
100 | if (output_sq) { | |
101 | int sq = '\'', ch; | |
102 | ||
103 | putchar(sq); | |
104 | while ((ch = *arg++)) { | |
105 | if (ch == sq) | |
106 | fputs("'\\'", stdout); | |
107 | putchar(ch); | |
108 | } | |
109 | putchar(sq); | |
110 | putchar(' '); | |
111 | } | |
112 | else | |
113 | puts(arg); | |
114 | } | |
115 | ||
116 | /* Like show(), but with a negation prefix according to type */ | |
117 | static void show_with_type(int type, const char *arg) | |
118 | { | |
119 | if (type != show_type) | |
120 | putchar('^'); | |
121 | show(arg); | |
122 | } | |
123 | ||
124 | /* Output a revision, only if filter allows it */ | |
125 | static void show_rev(int type, const struct object_id *oid, const char *name) | |
126 | { | |
127 | if (!(filter & DO_REVS)) | |
128 | return; | |
129 | def = NULL; | |
130 | ||
131 | if ((symbolic || abbrev_ref) && name) { | |
132 | if (symbolic == SHOW_SYMBOLIC_FULL || abbrev_ref) { | |
133 | struct object_id discard; | |
134 | char *full; | |
135 | ||
136 | switch (dwim_ref(name, strlen(name), &discard, &full)) { | |
137 | case 0: | |
138 | /* | |
139 | * Not found -- not a ref. We could | |
140 | * emit "name" here, but symbolic-full | |
141 | * users are interested in finding the | |
142 | * refs spelled in full, and they would | |
143 | * need to filter non-refs if we did so. | |
144 | */ | |
145 | break; | |
146 | case 1: /* happy */ | |
147 | if (abbrev_ref) | |
148 | full = shorten_unambiguous_ref(full, | |
149 | abbrev_ref_strict); | |
150 | show_with_type(type, full); | |
151 | break; | |
152 | default: /* ambiguous */ | |
153 | error("refname '%s' is ambiguous", name); | |
154 | break; | |
155 | } | |
156 | free(full); | |
157 | } else { | |
158 | show_with_type(type, name); | |
159 | } | |
160 | } | |
161 | else if (abbrev) | |
162 | show_with_type(type, find_unique_abbrev(oid->hash, abbrev)); | |
163 | else | |
164 | show_with_type(type, oid_to_hex(oid)); | |
165 | } | |
166 | ||
167 | /* Output a flag, only if filter allows it. */ | |
168 | static int show_flag(const char *arg) | |
169 | { | |
170 | if (!(filter & DO_FLAGS)) | |
171 | return 0; | |
172 | if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) { | |
173 | show(arg); | |
174 | return 1; | |
175 | } | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static int show_default(void) | |
180 | { | |
181 | const char *s = def; | |
182 | ||
183 | if (s) { | |
184 | struct object_id oid; | |
185 | ||
186 | def = NULL; | |
187 | if (!get_oid(s, &oid)) { | |
188 | show_rev(NORMAL, &oid, s); | |
189 | return 1; | |
190 | } | |
191 | } | |
192 | return 0; | |
193 | } | |
194 | ||
195 | static int show_reference(const char *refname, const struct object_id *oid, int flag, void *cb_data) | |
196 | { | |
197 | if (ref_excluded(ref_excludes, refname)) | |
198 | return 0; | |
199 | show_rev(NORMAL, oid, refname); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | static int anti_reference(const char *refname, const struct object_id *oid, int flag, void *cb_data) | |
204 | { | |
205 | show_rev(REVERSED, oid, refname); | |
206 | return 0; | |
207 | } | |
208 | ||
209 | static int show_abbrev(const struct object_id *oid, void *cb_data) | |
210 | { | |
211 | show_rev(NORMAL, oid, NULL); | |
212 | return 0; | |
213 | } | |
214 | ||
215 | static void show_datestring(const char *flag, const char *datestr) | |
216 | { | |
217 | char *buffer; | |
218 | ||
219 | /* date handling requires both flags and revs */ | |
220 | if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS)) | |
221 | return; | |
222 | buffer = xstrfmt("%s%"PRItime, flag, approxidate(datestr)); | |
223 | show(buffer); | |
224 | free(buffer); | |
225 | } | |
226 | ||
227 | static int show_file(const char *arg, int output_prefix) | |
228 | { | |
229 | show_default(); | |
230 | if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) { | |
231 | if (output_prefix) { | |
232 | const char *prefix = startup_info->prefix; | |
233 | char *fname = prefix_filename(prefix, arg); | |
234 | show(fname); | |
235 | free(fname); | |
236 | } else | |
237 | show(arg); | |
238 | return 1; | |
239 | } | |
240 | return 0; | |
241 | } | |
242 | ||
243 | static int try_difference(const char *arg) | |
244 | { | |
245 | char *dotdot; | |
246 | struct object_id oid; | |
247 | struct object_id end; | |
248 | const char *next; | |
249 | const char *this; | |
250 | int symmetric; | |
251 | static const char head_by_default[] = "HEAD"; | |
252 | ||
253 | if (!(dotdot = strstr(arg, ".."))) | |
254 | return 0; | |
255 | next = dotdot + 2; | |
256 | this = arg; | |
257 | symmetric = (*next == '.'); | |
258 | ||
259 | *dotdot = 0; | |
260 | next += symmetric; | |
261 | ||
262 | if (!*next) | |
263 | next = head_by_default; | |
264 | if (dotdot == arg) | |
265 | this = head_by_default; | |
266 | ||
267 | if (this == head_by_default && next == head_by_default && | |
268 | !symmetric) { | |
269 | /* | |
270 | * Just ".."? That is not a range but the | |
271 | * pathspec for the parent directory. | |
272 | */ | |
273 | *dotdot = '.'; | |
274 | return 0; | |
275 | } | |
276 | ||
277 | if (!get_oid_committish(this, &oid) && !get_oid_committish(next, &end)) { | |
278 | show_rev(NORMAL, &end, next); | |
279 | show_rev(symmetric ? NORMAL : REVERSED, &oid, this); | |
280 | if (symmetric) { | |
281 | struct commit_list *exclude; | |
282 | struct commit *a, *b; | |
283 | a = lookup_commit_reference(&oid); | |
284 | b = lookup_commit_reference(&end); | |
285 | exclude = get_merge_bases(a, b); | |
286 | while (exclude) { | |
287 | struct commit *commit = pop_commit(&exclude); | |
288 | show_rev(REVERSED, &commit->object.oid, NULL); | |
289 | } | |
290 | } | |
291 | *dotdot = '.'; | |
292 | return 1; | |
293 | } | |
294 | *dotdot = '.'; | |
295 | return 0; | |
296 | } | |
297 | ||
298 | static int try_parent_shorthands(const char *arg) | |
299 | { | |
300 | char *dotdot; | |
301 | struct object_id oid; | |
302 | struct commit *commit; | |
303 | struct commit_list *parents; | |
304 | int parent_number; | |
305 | int include_rev = 0; | |
306 | int include_parents = 0; | |
307 | int exclude_parent = 0; | |
308 | ||
309 | if ((dotdot = strstr(arg, "^!"))) { | |
310 | include_rev = 1; | |
311 | if (dotdot[2]) | |
312 | return 0; | |
313 | } else if ((dotdot = strstr(arg, "^@"))) { | |
314 | include_parents = 1; | |
315 | if (dotdot[2]) | |
316 | return 0; | |
317 | } else if ((dotdot = strstr(arg, "^-"))) { | |
318 | include_rev = 1; | |
319 | exclude_parent = 1; | |
320 | ||
321 | if (dotdot[2]) { | |
322 | char *end; | |
323 | exclude_parent = strtoul(dotdot + 2, &end, 10); | |
324 | if (*end != '\0' || !exclude_parent) | |
325 | return 0; | |
326 | } | |
327 | } else | |
328 | return 0; | |
329 | ||
330 | *dotdot = 0; | |
331 | if (get_oid_committish(arg, &oid)) { | |
332 | *dotdot = '^'; | |
333 | return 0; | |
334 | } | |
335 | ||
336 | commit = lookup_commit_reference(&oid); | |
337 | if (exclude_parent && | |
338 | exclude_parent > commit_list_count(commit->parents)) { | |
339 | *dotdot = '^'; | |
340 | return 0; | |
341 | } | |
342 | ||
343 | if (include_rev) | |
344 | show_rev(NORMAL, &oid, arg); | |
345 | for (parents = commit->parents, parent_number = 1; | |
346 | parents; | |
347 | parents = parents->next, parent_number++) { | |
348 | char *name = NULL; | |
349 | ||
350 | if (exclude_parent && parent_number != exclude_parent) | |
351 | continue; | |
352 | ||
353 | if (symbolic) | |
354 | name = xstrfmt("%s^%d", arg, parent_number); | |
355 | show_rev(include_parents ? NORMAL : REVERSED, | |
356 | &parents->item->object.oid, name); | |
357 | free(name); | |
358 | } | |
359 | ||
360 | *dotdot = '^'; | |
361 | return 1; | |
362 | } | |
363 | ||
364 | static int parseopt_dump(const struct option *o, const char *arg, int unset) | |
365 | { | |
366 | struct strbuf *parsed = o->value; | |
367 | if (unset) | |
368 | strbuf_addf(parsed, " --no-%s", o->long_name); | |
369 | else if (o->short_name && (o->long_name == NULL || !stuck_long)) | |
370 | strbuf_addf(parsed, " -%c", o->short_name); | |
371 | else | |
372 | strbuf_addf(parsed, " --%s", o->long_name); | |
373 | if (arg) { | |
374 | if (!stuck_long) | |
375 | strbuf_addch(parsed, ' '); | |
376 | else if (o->long_name) | |
377 | strbuf_addch(parsed, '='); | |
378 | sq_quote_buf(parsed, arg); | |
379 | } | |
380 | return 0; | |
381 | } | |
382 | ||
383 | static const char *skipspaces(const char *s) | |
384 | { | |
385 | while (isspace(*s)) | |
386 | s++; | |
387 | return s; | |
388 | } | |
389 | ||
390 | static char *findspace(const char *s) | |
391 | { | |
392 | for (; *s; s++) | |
393 | if (isspace(*s)) | |
394 | return (char*)s; | |
395 | return NULL; | |
396 | } | |
397 | ||
398 | static int cmd_parseopt(int argc, const char **argv, const char *prefix) | |
399 | { | |
400 | static int keep_dashdash = 0, stop_at_non_option = 0; | |
401 | static char const * const parseopt_usage[] = { | |
402 | N_("git rev-parse --parseopt [<options>] -- [<args>...]"), | |
403 | NULL | |
404 | }; | |
405 | static struct option parseopt_opts[] = { | |
406 | OPT_BOOL(0, "keep-dashdash", &keep_dashdash, | |
407 | N_("keep the `--` passed as an arg")), | |
408 | OPT_BOOL(0, "stop-at-non-option", &stop_at_non_option, | |
409 | N_("stop parsing after the " | |
410 | "first non-option argument")), | |
411 | OPT_BOOL(0, "stuck-long", &stuck_long, | |
412 | N_("output in stuck long form")), | |
413 | OPT_END(), | |
414 | }; | |
415 | static const char * const flag_chars = "*=?!"; | |
416 | ||
417 | struct strbuf sb = STRBUF_INIT, parsed = STRBUF_INIT; | |
418 | const char **usage = NULL; | |
419 | struct option *opts = NULL; | |
420 | int onb = 0, osz = 0, unb = 0, usz = 0; | |
421 | ||
422 | strbuf_addstr(&parsed, "set --"); | |
423 | argc = parse_options(argc, argv, prefix, parseopt_opts, parseopt_usage, | |
424 | PARSE_OPT_KEEP_DASHDASH); | |
425 | if (argc < 1 || strcmp(argv[0], "--")) | |
426 | usage_with_options(parseopt_usage, parseopt_opts); | |
427 | ||
428 | /* get the usage up to the first line with a -- on it */ | |
429 | for (;;) { | |
430 | if (strbuf_getline(&sb, stdin) == EOF) | |
431 | die("premature end of input"); | |
432 | ALLOC_GROW(usage, unb + 1, usz); | |
433 | if (!strcmp("--", sb.buf)) { | |
434 | if (unb < 1) | |
435 | die("no usage string given before the `--' separator"); | |
436 | usage[unb] = NULL; | |
437 | break; | |
438 | } | |
439 | usage[unb++] = strbuf_detach(&sb, NULL); | |
440 | } | |
441 | ||
442 | /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */ | |
443 | while (strbuf_getline(&sb, stdin) != EOF) { | |
444 | const char *s; | |
445 | char *help; | |
446 | struct option *o; | |
447 | ||
448 | if (!sb.len) | |
449 | continue; | |
450 | ||
451 | ALLOC_GROW(opts, onb + 1, osz); | |
452 | memset(opts + onb, 0, sizeof(opts[onb])); | |
453 | ||
454 | o = &opts[onb++]; | |
455 | help = findspace(sb.buf); | |
456 | if (!help || sb.buf == help) { | |
457 | o->type = OPTION_GROUP; | |
458 | o->help = xstrdup(skipspaces(sb.buf)); | |
459 | continue; | |
460 | } | |
461 | ||
462 | *help = '\0'; | |
463 | ||
464 | o->type = OPTION_CALLBACK; | |
465 | o->help = xstrdup(skipspaces(help+1)); | |
466 | o->value = &parsed; | |
467 | o->flags = PARSE_OPT_NOARG; | |
468 | o->callback = &parseopt_dump; | |
469 | ||
470 | /* name(s) */ | |
471 | s = strpbrk(sb.buf, flag_chars); | |
472 | if (s == NULL) | |
473 | s = help; | |
474 | ||
475 | if (s - sb.buf == 1) /* short option only */ | |
476 | o->short_name = *sb.buf; | |
477 | else if (sb.buf[1] != ',') /* long option only */ | |
478 | o->long_name = xmemdupz(sb.buf, s - sb.buf); | |
479 | else { | |
480 | o->short_name = *sb.buf; | |
481 | o->long_name = xmemdupz(sb.buf + 2, s - sb.buf - 2); | |
482 | } | |
483 | ||
484 | /* flags */ | |
485 | while (s < help) { | |
486 | switch (*s++) { | |
487 | case '=': | |
488 | o->flags &= ~PARSE_OPT_NOARG; | |
489 | continue; | |
490 | case '?': | |
491 | o->flags &= ~PARSE_OPT_NOARG; | |
492 | o->flags |= PARSE_OPT_OPTARG; | |
493 | continue; | |
494 | case '!': | |
495 | o->flags |= PARSE_OPT_NONEG; | |
496 | continue; | |
497 | case '*': | |
498 | o->flags |= PARSE_OPT_HIDDEN; | |
499 | continue; | |
500 | } | |
501 | s--; | |
502 | break; | |
503 | } | |
504 | ||
505 | if (s < help) | |
506 | o->argh = xmemdupz(s, help - s); | |
507 | } | |
508 | strbuf_release(&sb); | |
509 | ||
510 | /* put an OPT_END() */ | |
511 | ALLOC_GROW(opts, onb + 1, osz); | |
512 | memset(opts + onb, 0, sizeof(opts[onb])); | |
513 | argc = parse_options(argc, argv, prefix, opts, usage, | |
514 | (keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0) | | |
515 | (stop_at_non_option ? PARSE_OPT_STOP_AT_NON_OPTION : 0) | | |
516 | PARSE_OPT_SHELL_EVAL); | |
517 | ||
518 | strbuf_addstr(&parsed, " --"); | |
519 | sq_quote_argv(&parsed, argv, 0); | |
520 | puts(parsed.buf); | |
521 | return 0; | |
522 | } | |
523 | ||
524 | static int cmd_sq_quote(int argc, const char **argv) | |
525 | { | |
526 | struct strbuf buf = STRBUF_INIT; | |
527 | ||
528 | if (argc) | |
529 | sq_quote_argv(&buf, argv, 0); | |
530 | printf("%s\n", buf.buf); | |
531 | strbuf_release(&buf); | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
536 | static void die_no_single_rev(int quiet) | |
537 | { | |
538 | if (quiet) | |
539 | exit(1); | |
540 | else | |
541 | die("Needed a single revision"); | |
542 | } | |
543 | ||
544 | static const char builtin_rev_parse_usage[] = | |
545 | N_("git rev-parse --parseopt [<options>] -- [<args>...]\n" | |
546 | " or: git rev-parse --sq-quote [<arg>...]\n" | |
547 | " or: git rev-parse [<options>] [<arg>...]\n" | |
548 | "\n" | |
549 | "Run \"git rev-parse --parseopt -h\" for more information on the first usage."); | |
550 | ||
551 | /* | |
552 | * Parse "opt" or "opt=<value>", setting value respectively to either | |
553 | * NULL or the string after "=". | |
554 | */ | |
555 | static int opt_with_value(const char *arg, const char *opt, const char **value) | |
556 | { | |
557 | if (skip_prefix(arg, opt, &arg)) { | |
558 | if (!*arg) { | |
559 | *value = NULL; | |
560 | return 1; | |
561 | } | |
562 | if (*arg++ == '=') { | |
563 | *value = arg; | |
564 | return 1; | |
565 | } | |
566 | } | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static void handle_ref_opt(const char *pattern, const char *prefix) | |
571 | { | |
572 | if (pattern) | |
573 | for_each_glob_ref_in(show_reference, pattern, prefix, NULL); | |
574 | else | |
575 | for_each_ref_in(prefix, show_reference, NULL); | |
576 | clear_ref_exclusion(&ref_excludes); | |
577 | } | |
578 | ||
579 | int cmd_rev_parse(int argc, const char **argv, const char *prefix) | |
580 | { | |
581 | int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0; | |
582 | int did_repo_setup = 0; | |
583 | int has_dashdash = 0; | |
584 | int output_prefix = 0; | |
585 | struct object_id oid; | |
586 | unsigned int flags = 0; | |
587 | const char *name = NULL; | |
588 | struct object_context unused; | |
589 | struct strbuf buf = STRBUF_INIT; | |
590 | ||
591 | if (argc > 1 && !strcmp("--parseopt", argv[1])) | |
592 | return cmd_parseopt(argc - 1, argv + 1, prefix); | |
593 | ||
594 | if (argc > 1 && !strcmp("--sq-quote", argv[1])) | |
595 | return cmd_sq_quote(argc - 2, argv + 2); | |
596 | ||
597 | if (argc > 1 && !strcmp("-h", argv[1])) | |
598 | usage(builtin_rev_parse_usage); | |
599 | ||
600 | for (i = 1; i < argc; i++) { | |
601 | if (!strcmp(argv[i], "--")) { | |
602 | has_dashdash = 1; | |
603 | break; | |
604 | } | |
605 | } | |
606 | ||
607 | /* No options; just report on whether we're in a git repo or not. */ | |
608 | if (argc == 1) { | |
609 | setup_git_directory(); | |
610 | git_config(git_default_config, NULL); | |
611 | return 0; | |
612 | } | |
613 | ||
614 | for (i = 1; i < argc; i++) { | |
615 | const char *arg = argv[i]; | |
616 | ||
617 | if (!strcmp(arg, "--local-env-vars")) { | |
618 | int i; | |
619 | for (i = 0; local_repo_env[i]; i++) | |
620 | printf("%s\n", local_repo_env[i]); | |
621 | continue; | |
622 | } | |
623 | if (!strcmp(arg, "--resolve-git-dir")) { | |
624 | const char *gitdir = argv[++i]; | |
625 | if (!gitdir) | |
626 | die("--resolve-git-dir requires an argument"); | |
627 | gitdir = resolve_gitdir(gitdir); | |
628 | if (!gitdir) | |
629 | die("not a gitdir '%s'", argv[i]); | |
630 | puts(gitdir); | |
631 | continue; | |
632 | } | |
633 | ||
634 | /* The rest of the options require a git repository. */ | |
635 | if (!did_repo_setup) { | |
636 | prefix = setup_git_directory(); | |
637 | git_config(git_default_config, NULL); | |
638 | did_repo_setup = 1; | |
639 | } | |
640 | ||
641 | if (!strcmp(arg, "--git-path")) { | |
642 | if (!argv[i + 1]) | |
643 | die("--git-path requires an argument"); | |
644 | strbuf_reset(&buf); | |
645 | puts(relative_path(git_path("%s", argv[i + 1]), | |
646 | prefix, &buf)); | |
647 | i++; | |
648 | continue; | |
649 | } | |
650 | if (as_is) { | |
651 | if (show_file(arg, output_prefix) && as_is < 2) | |
652 | verify_filename(prefix, arg, 0); | |
653 | continue; | |
654 | } | |
655 | if (!strcmp(arg,"-n")) { | |
656 | if (++i >= argc) | |
657 | die("-n requires an argument"); | |
658 | if ((filter & DO_FLAGS) && (filter & DO_REVS)) { | |
659 | show(arg); | |
660 | show(argv[i]); | |
661 | } | |
662 | continue; | |
663 | } | |
664 | if (starts_with(arg, "-n")) { | |
665 | if ((filter & DO_FLAGS) && (filter & DO_REVS)) | |
666 | show(arg); | |
667 | continue; | |
668 | } | |
669 | ||
670 | if (*arg == '-') { | |
671 | if (!strcmp(arg, "--")) { | |
672 | as_is = 2; | |
673 | /* Pass on the "--" if we show anything but files.. */ | |
674 | if (filter & (DO_FLAGS | DO_REVS)) | |
675 | show_file(arg, 0); | |
676 | continue; | |
677 | } | |
678 | if (!strcmp(arg, "--default")) { | |
679 | def = argv[++i]; | |
680 | if (!def) | |
681 | die("--default requires an argument"); | |
682 | continue; | |
683 | } | |
684 | if (!strcmp(arg, "--prefix")) { | |
685 | prefix = argv[++i]; | |
686 | if (!prefix) | |
687 | die("--prefix requires an argument"); | |
688 | startup_info->prefix = prefix; | |
689 | output_prefix = 1; | |
690 | continue; | |
691 | } | |
692 | if (!strcmp(arg, "--revs-only")) { | |
693 | filter &= ~DO_NOREV; | |
694 | continue; | |
695 | } | |
696 | if (!strcmp(arg, "--no-revs")) { | |
697 | filter &= ~DO_REVS; | |
698 | continue; | |
699 | } | |
700 | if (!strcmp(arg, "--flags")) { | |
701 | filter &= ~DO_NONFLAGS; | |
702 | continue; | |
703 | } | |
704 | if (!strcmp(arg, "--no-flags")) { | |
705 | filter &= ~DO_FLAGS; | |
706 | continue; | |
707 | } | |
708 | if (!strcmp(arg, "--verify")) { | |
709 | filter &= ~(DO_FLAGS|DO_NOREV); | |
710 | verify = 1; | |
711 | continue; | |
712 | } | |
713 | if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) { | |
714 | quiet = 1; | |
715 | flags |= GET_OID_QUIETLY; | |
716 | continue; | |
717 | } | |
718 | if (opt_with_value(arg, "--short", &arg)) { | |
719 | filter &= ~(DO_FLAGS|DO_NOREV); | |
720 | verify = 1; | |
721 | abbrev = DEFAULT_ABBREV; | |
722 | if (!arg) | |
723 | continue; | |
724 | abbrev = strtoul(arg, NULL, 10); | |
725 | if (abbrev < MINIMUM_ABBREV) | |
726 | abbrev = MINIMUM_ABBREV; | |
727 | else if (40 <= abbrev) | |
728 | abbrev = 40; | |
729 | continue; | |
730 | } | |
731 | if (!strcmp(arg, "--sq")) { | |
732 | output_sq = 1; | |
733 | continue; | |
734 | } | |
735 | if (!strcmp(arg, "--not")) { | |
736 | show_type ^= REVERSED; | |
737 | continue; | |
738 | } | |
739 | if (!strcmp(arg, "--symbolic")) { | |
740 | symbolic = SHOW_SYMBOLIC_ASIS; | |
741 | continue; | |
742 | } | |
743 | if (!strcmp(arg, "--symbolic-full-name")) { | |
744 | symbolic = SHOW_SYMBOLIC_FULL; | |
745 | continue; | |
746 | } | |
747 | if (opt_with_value(arg, "--abbrev-ref", &arg)) { | |
748 | abbrev_ref = 1; | |
749 | abbrev_ref_strict = warn_ambiguous_refs; | |
750 | if (arg) { | |
751 | if (!strcmp(arg, "strict")) | |
752 | abbrev_ref_strict = 1; | |
753 | else if (!strcmp(arg, "loose")) | |
754 | abbrev_ref_strict = 0; | |
755 | else | |
756 | die("unknown mode for --abbrev-ref: %s", | |
757 | arg); | |
758 | } | |
759 | continue; | |
760 | } | |
761 | if (!strcmp(arg, "--all")) { | |
762 | for_each_ref(show_reference, NULL); | |
763 | continue; | |
764 | } | |
765 | if (skip_prefix(arg, "--disambiguate=", &arg)) { | |
766 | for_each_abbrev(arg, show_abbrev, NULL); | |
767 | continue; | |
768 | } | |
769 | if (!strcmp(arg, "--bisect")) { | |
770 | for_each_fullref_in("refs/bisect/bad", show_reference, NULL, 0); | |
771 | for_each_fullref_in("refs/bisect/good", anti_reference, NULL, 0); | |
772 | continue; | |
773 | } | |
774 | if (opt_with_value(arg, "--branches", &arg)) { | |
775 | handle_ref_opt(arg, "refs/heads/"); | |
776 | continue; | |
777 | } | |
778 | if (opt_with_value(arg, "--tags", &arg)) { | |
779 | handle_ref_opt(arg, "refs/tags/"); | |
780 | continue; | |
781 | } | |
782 | if (skip_prefix(arg, "--glob=", &arg)) { | |
783 | handle_ref_opt(arg, NULL); | |
784 | continue; | |
785 | } | |
786 | if (opt_with_value(arg, "--remotes", &arg)) { | |
787 | handle_ref_opt(arg, "refs/remotes/"); | |
788 | continue; | |
789 | } | |
790 | if (skip_prefix(arg, "--exclude=", &arg)) { | |
791 | add_ref_exclusion(&ref_excludes, arg); | |
792 | continue; | |
793 | } | |
794 | if (!strcmp(arg, "--show-toplevel")) { | |
795 | const char *work_tree = get_git_work_tree(); | |
796 | if (work_tree) | |
797 | puts(work_tree); | |
798 | continue; | |
799 | } | |
800 | if (!strcmp(arg, "--show-superproject-working-tree")) { | |
801 | const char *superproject = get_superproject_working_tree(); | |
802 | if (superproject) | |
803 | puts(superproject); | |
804 | continue; | |
805 | } | |
806 | if (!strcmp(arg, "--show-prefix")) { | |
807 | if (prefix) | |
808 | puts(prefix); | |
809 | else | |
810 | putchar('\n'); | |
811 | continue; | |
812 | } | |
813 | if (!strcmp(arg, "--show-cdup")) { | |
814 | const char *pfx = prefix; | |
815 | if (!is_inside_work_tree()) { | |
816 | const char *work_tree = | |
817 | get_git_work_tree(); | |
818 | if (work_tree) | |
819 | printf("%s\n", work_tree); | |
820 | continue; | |
821 | } | |
822 | while (pfx) { | |
823 | pfx = strchr(pfx, '/'); | |
824 | if (pfx) { | |
825 | pfx++; | |
826 | printf("../"); | |
827 | } | |
828 | } | |
829 | putchar('\n'); | |
830 | continue; | |
831 | } | |
832 | if (!strcmp(arg, "--git-dir") || | |
833 | !strcmp(arg, "--absolute-git-dir")) { | |
834 | const char *gitdir = getenv(GIT_DIR_ENVIRONMENT); | |
835 | char *cwd; | |
836 | int len; | |
837 | if (arg[2] == 'g') { /* --git-dir */ | |
838 | if (gitdir) { | |
839 | puts(gitdir); | |
840 | continue; | |
841 | } | |
842 | if (!prefix) { | |
843 | puts(".git"); | |
844 | continue; | |
845 | } | |
846 | } else { /* --absolute-git-dir */ | |
847 | if (!gitdir && !prefix) | |
848 | gitdir = ".git"; | |
849 | if (gitdir) { | |
850 | puts(real_path(gitdir)); | |
851 | continue; | |
852 | } | |
853 | } | |
854 | cwd = xgetcwd(); | |
855 | len = strlen(cwd); | |
856 | printf("%s%s.git\n", cwd, len && cwd[len-1] != '/' ? "/" : ""); | |
857 | free(cwd); | |
858 | continue; | |
859 | } | |
860 | if (!strcmp(arg, "--git-common-dir")) { | |
861 | strbuf_reset(&buf); | |
862 | puts(relative_path(get_git_common_dir(), | |
863 | prefix, &buf)); | |
864 | continue; | |
865 | } | |
866 | if (!strcmp(arg, "--is-inside-git-dir")) { | |
867 | printf("%s\n", is_inside_git_dir() ? "true" | |
868 | : "false"); | |
869 | continue; | |
870 | } | |
871 | if (!strcmp(arg, "--is-inside-work-tree")) { | |
872 | printf("%s\n", is_inside_work_tree() ? "true" | |
873 | : "false"); | |
874 | continue; | |
875 | } | |
876 | if (!strcmp(arg, "--is-bare-repository")) { | |
877 | printf("%s\n", is_bare_repository() ? "true" | |
878 | : "false"); | |
879 | continue; | |
880 | } | |
881 | if (!strcmp(arg, "--is-shallow-repository")) { | |
882 | printf("%s\n", is_repository_shallow() ? "true" | |
883 | : "false"); | |
884 | continue; | |
885 | } | |
886 | if (!strcmp(arg, "--shared-index-path")) { | |
887 | if (read_cache() < 0) | |
888 | die(_("Could not read the index")); | |
889 | if (the_index.split_index) { | |
890 | const unsigned char *sha1 = the_index.split_index->base_sha1; | |
891 | const char *path = git_path("sharedindex.%s", sha1_to_hex(sha1)); | |
892 | strbuf_reset(&buf); | |
893 | puts(relative_path(path, prefix, &buf)); | |
894 | } | |
895 | continue; | |
896 | } | |
897 | if (skip_prefix(arg, "--since=", &arg)) { | |
898 | show_datestring("--max-age=", arg); | |
899 | continue; | |
900 | } | |
901 | if (skip_prefix(arg, "--after=", &arg)) { | |
902 | show_datestring("--max-age=", arg); | |
903 | continue; | |
904 | } | |
905 | if (skip_prefix(arg, "--before=", &arg)) { | |
906 | show_datestring("--min-age=", arg); | |
907 | continue; | |
908 | } | |
909 | if (skip_prefix(arg, "--until=", &arg)) { | |
910 | show_datestring("--min-age=", arg); | |
911 | continue; | |
912 | } | |
913 | if (show_flag(arg) && verify) | |
914 | die_no_single_rev(quiet); | |
915 | continue; | |
916 | } | |
917 | ||
918 | /* Not a flag argument */ | |
919 | if (try_difference(arg)) | |
920 | continue; | |
921 | if (try_parent_shorthands(arg)) | |
922 | continue; | |
923 | name = arg; | |
924 | type = NORMAL; | |
925 | if (*arg == '^') { | |
926 | name++; | |
927 | type = REVERSED; | |
928 | } | |
929 | if (!get_oid_with_context(name, flags, &oid, &unused)) { | |
930 | if (verify) | |
931 | revs_count++; | |
932 | else | |
933 | show_rev(type, &oid, name); | |
934 | continue; | |
935 | } | |
936 | if (verify) | |
937 | die_no_single_rev(quiet); | |
938 | if (has_dashdash) | |
939 | die("bad revision '%s'", arg); | |
940 | as_is = 1; | |
941 | if (!show_file(arg, output_prefix)) | |
942 | continue; | |
943 | verify_filename(prefix, arg, 1); | |
944 | } | |
945 | strbuf_release(&buf); | |
946 | if (verify) { | |
947 | if (revs_count == 1) { | |
948 | show_rev(type, &oid, name); | |
949 | return 0; | |
950 | } else if (revs_count == 0 && show_default()) | |
951 | return 0; | |
952 | die_no_single_rev(quiet); | |
953 | } else | |
954 | show_default(); | |
955 | return 0; | |
956 | } |