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1 | /* | |
2 | * rev-parse.c | |
3 | * | |
4 | * Copyright (C) Linus Torvalds, 2005 | |
5 | */ | |
6 | #define USE_THE_INDEX_COMPATIBILITY_MACROS | |
7 | #include "cache.h" | |
8 | #include "config.h" | |
9 | #include "commit.h" | |
10 | #include "refs.h" | |
11 | #include "quote.h" | |
12 | #include "builtin.h" | |
13 | #include "parse-options.h" | |
14 | #include "diff.h" | |
15 | #include "revision.h" | |
16 | #include "split-index.h" | |
17 | #include "submodule.h" | |
18 | #include "commit-reach.h" | |
19 | ||
20 | #define DO_REVS 1 | |
21 | #define DO_NOREV 2 | |
22 | #define DO_FLAGS 4 | |
23 | #define DO_NONFLAGS 8 | |
24 | static int filter = ~0; | |
25 | ||
26 | static const char *def; | |
27 | ||
28 | #define NORMAL 0 | |
29 | #define REVERSED 1 | |
30 | static int show_type = NORMAL; | |
31 | ||
32 | #define SHOW_SYMBOLIC_ASIS 1 | |
33 | #define SHOW_SYMBOLIC_FULL 2 | |
34 | static int symbolic; | |
35 | static int abbrev; | |
36 | static int abbrev_ref; | |
37 | static int abbrev_ref_strict; | |
38 | static int output_sq; | |
39 | ||
40 | static int stuck_long; | |
41 | static struct string_list *ref_excludes; | |
42 | ||
43 | /* | |
44 | * Some arguments are relevant "revision" arguments, | |
45 | * others are about output format or other details. | |
46 | * This sorts it all out. | |
47 | */ | |
48 | static int is_rev_argument(const char *arg) | |
49 | { | |
50 | static const char *rev_args[] = { | |
51 | "--all", | |
52 | "--bisect", | |
53 | "--dense", | |
54 | "--branches=", | |
55 | "--branches", | |
56 | "--header", | |
57 | "--ignore-missing", | |
58 | "--max-age=", | |
59 | "--max-count=", | |
60 | "--min-age=", | |
61 | "--no-merges", | |
62 | "--min-parents=", | |
63 | "--no-min-parents", | |
64 | "--max-parents=", | |
65 | "--no-max-parents", | |
66 | "--objects", | |
67 | "--objects-edge", | |
68 | "--parents", | |
69 | "--pretty", | |
70 | "--remotes=", | |
71 | "--remotes", | |
72 | "--glob=", | |
73 | "--sparse", | |
74 | "--tags=", | |
75 | "--tags", | |
76 | "--topo-order", | |
77 | "--date-order", | |
78 | "--unpacked", | |
79 | NULL | |
80 | }; | |
81 | const char **p = rev_args; | |
82 | ||
83 | /* accept -<digit>, like traditional "head" */ | |
84 | if ((*arg == '-') && isdigit(arg[1])) | |
85 | return 1; | |
86 | ||
87 | for (;;) { | |
88 | const char *str = *p++; | |
89 | int len; | |
90 | if (!str) | |
91 | return 0; | |
92 | len = strlen(str); | |
93 | if (!strcmp(arg, str) || | |
94 | (str[len-1] == '=' && !strncmp(arg, str, len))) | |
95 | return 1; | |
96 | } | |
97 | } | |
98 | ||
99 | /* Output argument as a string, either SQ or normal */ | |
100 | static void show(const char *arg) | |
101 | { | |
102 | if (output_sq) { | |
103 | int sq = '\'', ch; | |
104 | ||
105 | putchar(sq); | |
106 | while ((ch = *arg++)) { | |
107 | if (ch == sq) | |
108 | fputs("'\\'", stdout); | |
109 | putchar(ch); | |
110 | } | |
111 | putchar(sq); | |
112 | putchar(' '); | |
113 | } | |
114 | else | |
115 | puts(arg); | |
116 | } | |
117 | ||
118 | /* Like show(), but with a negation prefix according to type */ | |
119 | static void show_with_type(int type, const char *arg) | |
120 | { | |
121 | if (type != show_type) | |
122 | putchar('^'); | |
123 | show(arg); | |
124 | } | |
125 | ||
126 | /* Output a revision, only if filter allows it */ | |
127 | static void show_rev(int type, const struct object_id *oid, const char *name) | |
128 | { | |
129 | if (!(filter & DO_REVS)) | |
130 | return; | |
131 | def = NULL; | |
132 | ||
133 | if ((symbolic || abbrev_ref) && name) { | |
134 | if (symbolic == SHOW_SYMBOLIC_FULL || abbrev_ref) { | |
135 | struct object_id discard; | |
136 | char *full; | |
137 | ||
138 | switch (dwim_ref(name, strlen(name), &discard, &full)) { | |
139 | case 0: | |
140 | /* | |
141 | * Not found -- not a ref. We could | |
142 | * emit "name" here, but symbolic-full | |
143 | * users are interested in finding the | |
144 | * refs spelled in full, and they would | |
145 | * need to filter non-refs if we did so. | |
146 | */ | |
147 | break; | |
148 | case 1: /* happy */ | |
149 | if (abbrev_ref) | |
150 | full = shorten_unambiguous_ref(full, | |
151 | abbrev_ref_strict); | |
152 | show_with_type(type, full); | |
153 | break; | |
154 | default: /* ambiguous */ | |
155 | error("refname '%s' is ambiguous", name); | |
156 | break; | |
157 | } | |
158 | free(full); | |
159 | } else { | |
160 | show_with_type(type, name); | |
161 | } | |
162 | } | |
163 | else if (abbrev) | |
164 | show_with_type(type, find_unique_abbrev(oid, abbrev)); | |
165 | else | |
166 | show_with_type(type, oid_to_hex(oid)); | |
167 | } | |
168 | ||
169 | /* Output a flag, only if filter allows it. */ | |
170 | static int show_flag(const char *arg) | |
171 | { | |
172 | if (!(filter & DO_FLAGS)) | |
173 | return 0; | |
174 | if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) { | |
175 | show(arg); | |
176 | return 1; | |
177 | } | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static int show_default(void) | |
182 | { | |
183 | const char *s = def; | |
184 | ||
185 | if (s) { | |
186 | struct object_id oid; | |
187 | ||
188 | def = NULL; | |
189 | if (!get_oid(s, &oid)) { | |
190 | show_rev(NORMAL, &oid, s); | |
191 | return 1; | |
192 | } | |
193 | } | |
194 | return 0; | |
195 | } | |
196 | ||
197 | static int show_reference(const char *refname, const struct object_id *oid, int flag, void *cb_data) | |
198 | { | |
199 | if (ref_excluded(ref_excludes, refname)) | |
200 | return 0; | |
201 | show_rev(NORMAL, oid, refname); | |
202 | return 0; | |
203 | } | |
204 | ||
205 | static int anti_reference(const char *refname, const struct object_id *oid, int flag, void *cb_data) | |
206 | { | |
207 | show_rev(REVERSED, oid, refname); | |
208 | return 0; | |
209 | } | |
210 | ||
211 | static int show_abbrev(const struct object_id *oid, void *cb_data) | |
212 | { | |
213 | show_rev(NORMAL, oid, NULL); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | static void show_datestring(const char *flag, const char *datestr) | |
218 | { | |
219 | char *buffer; | |
220 | ||
221 | /* date handling requires both flags and revs */ | |
222 | if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS)) | |
223 | return; | |
224 | buffer = xstrfmt("%s%"PRItime, flag, approxidate(datestr)); | |
225 | show(buffer); | |
226 | free(buffer); | |
227 | } | |
228 | ||
229 | static int show_file(const char *arg, int output_prefix) | |
230 | { | |
231 | show_default(); | |
232 | if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) { | |
233 | if (output_prefix) { | |
234 | const char *prefix = startup_info->prefix; | |
235 | char *fname = prefix_filename(prefix, arg); | |
236 | show(fname); | |
237 | free(fname); | |
238 | } else | |
239 | show(arg); | |
240 | return 1; | |
241 | } | |
242 | return 0; | |
243 | } | |
244 | ||
245 | static int try_difference(const char *arg) | |
246 | { | |
247 | char *dotdot; | |
248 | struct object_id start_oid; | |
249 | struct object_id end_oid; | |
250 | const char *end; | |
251 | const char *start; | |
252 | int symmetric; | |
253 | static const char head_by_default[] = "HEAD"; | |
254 | ||
255 | if (!(dotdot = strstr(arg, ".."))) | |
256 | return 0; | |
257 | end = dotdot + 2; | |
258 | start = arg; | |
259 | symmetric = (*end == '.'); | |
260 | ||
261 | *dotdot = 0; | |
262 | end += symmetric; | |
263 | ||
264 | if (!*end) | |
265 | end = head_by_default; | |
266 | if (dotdot == arg) | |
267 | start = head_by_default; | |
268 | ||
269 | if (start == head_by_default && end == head_by_default && | |
270 | !symmetric) { | |
271 | /* | |
272 | * Just ".."? That is not a range but the | |
273 | * pathspec for the parent directory. | |
274 | */ | |
275 | *dotdot = '.'; | |
276 | return 0; | |
277 | } | |
278 | ||
279 | if (!get_oid_committish(start, &start_oid) && !get_oid_committish(end, &end_oid)) { | |
280 | show_rev(NORMAL, &end_oid, end); | |
281 | show_rev(symmetric ? NORMAL : REVERSED, &start_oid, start); | |
282 | if (symmetric) { | |
283 | struct commit_list *exclude; | |
284 | struct commit *a, *b; | |
285 | a = lookup_commit_reference(the_repository, &start_oid); | |
286 | b = lookup_commit_reference(the_repository, &end_oid); | |
287 | if (!a || !b) { | |
288 | *dotdot = '.'; | |
289 | return 0; | |
290 | } | |
291 | exclude = get_merge_bases(a, b); | |
292 | while (exclude) { | |
293 | struct commit *commit = pop_commit(&exclude); | |
294 | show_rev(REVERSED, &commit->object.oid, NULL); | |
295 | } | |
296 | } | |
297 | *dotdot = '.'; | |
298 | return 1; | |
299 | } | |
300 | *dotdot = '.'; | |
301 | return 0; | |
302 | } | |
303 | ||
304 | static int try_parent_shorthands(const char *arg) | |
305 | { | |
306 | char *dotdot; | |
307 | struct object_id oid; | |
308 | struct commit *commit; | |
309 | struct commit_list *parents; | |
310 | int parent_number; | |
311 | int include_rev = 0; | |
312 | int include_parents = 0; | |
313 | int exclude_parent = 0; | |
314 | ||
315 | if ((dotdot = strstr(arg, "^!"))) { | |
316 | include_rev = 1; | |
317 | if (dotdot[2]) | |
318 | return 0; | |
319 | } else if ((dotdot = strstr(arg, "^@"))) { | |
320 | include_parents = 1; | |
321 | if (dotdot[2]) | |
322 | return 0; | |
323 | } else if ((dotdot = strstr(arg, "^-"))) { | |
324 | include_rev = 1; | |
325 | exclude_parent = 1; | |
326 | ||
327 | if (dotdot[2]) { | |
328 | char *end; | |
329 | exclude_parent = strtoul(dotdot + 2, &end, 10); | |
330 | if (*end != '\0' || !exclude_parent) | |
331 | return 0; | |
332 | } | |
333 | } else | |
334 | return 0; | |
335 | ||
336 | *dotdot = 0; | |
337 | if (get_oid_committish(arg, &oid) || | |
338 | !(commit = lookup_commit_reference(the_repository, &oid))) { | |
339 | *dotdot = '^'; | |
340 | return 0; | |
341 | } | |
342 | ||
343 | if (exclude_parent && | |
344 | exclude_parent > commit_list_count(commit->parents)) { | |
345 | *dotdot = '^'; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | if (include_rev) | |
350 | show_rev(NORMAL, &oid, arg); | |
351 | for (parents = commit->parents, parent_number = 1; | |
352 | parents; | |
353 | parents = parents->next, parent_number++) { | |
354 | char *name = NULL; | |
355 | ||
356 | if (exclude_parent && parent_number != exclude_parent) | |
357 | continue; | |
358 | ||
359 | if (symbolic) | |
360 | name = xstrfmt("%s^%d", arg, parent_number); | |
361 | show_rev(include_parents ? NORMAL : REVERSED, | |
362 | &parents->item->object.oid, name); | |
363 | free(name); | |
364 | } | |
365 | ||
366 | *dotdot = '^'; | |
367 | return 1; | |
368 | } | |
369 | ||
370 | static int parseopt_dump(const struct option *o, const char *arg, int unset) | |
371 | { | |
372 | struct strbuf *parsed = o->value; | |
373 | if (unset) | |
374 | strbuf_addf(parsed, " --no-%s", o->long_name); | |
375 | else if (o->short_name && (o->long_name == NULL || !stuck_long)) | |
376 | strbuf_addf(parsed, " -%c", o->short_name); | |
377 | else | |
378 | strbuf_addf(parsed, " --%s", o->long_name); | |
379 | if (arg) { | |
380 | if (!stuck_long) | |
381 | strbuf_addch(parsed, ' '); | |
382 | else if (o->long_name) | |
383 | strbuf_addch(parsed, '='); | |
384 | sq_quote_buf(parsed, arg); | |
385 | } | |
386 | return 0; | |
387 | } | |
388 | ||
389 | static const char *skipspaces(const char *s) | |
390 | { | |
391 | while (isspace(*s)) | |
392 | s++; | |
393 | return s; | |
394 | } | |
395 | ||
396 | static char *findspace(const char *s) | |
397 | { | |
398 | for (; *s; s++) | |
399 | if (isspace(*s)) | |
400 | return (char*)s; | |
401 | return NULL; | |
402 | } | |
403 | ||
404 | static int cmd_parseopt(int argc, const char **argv, const char *prefix) | |
405 | { | |
406 | static int keep_dashdash = 0, stop_at_non_option = 0; | |
407 | static char const * const parseopt_usage[] = { | |
408 | N_("git rev-parse --parseopt [<options>] -- [<args>...]"), | |
409 | NULL | |
410 | }; | |
411 | static struct option parseopt_opts[] = { | |
412 | OPT_BOOL(0, "keep-dashdash", &keep_dashdash, | |
413 | N_("keep the `--` passed as an arg")), | |
414 | OPT_BOOL(0, "stop-at-non-option", &stop_at_non_option, | |
415 | N_("stop parsing after the " | |
416 | "first non-option argument")), | |
417 | OPT_BOOL(0, "stuck-long", &stuck_long, | |
418 | N_("output in stuck long form")), | |
419 | OPT_END(), | |
420 | }; | |
421 | static const char * const flag_chars = "*=?!"; | |
422 | ||
423 | struct strbuf sb = STRBUF_INIT, parsed = STRBUF_INIT; | |
424 | const char **usage = NULL; | |
425 | struct option *opts = NULL; | |
426 | int onb = 0, osz = 0, unb = 0, usz = 0; | |
427 | ||
428 | strbuf_addstr(&parsed, "set --"); | |
429 | argc = parse_options(argc, argv, prefix, parseopt_opts, parseopt_usage, | |
430 | PARSE_OPT_KEEP_DASHDASH); | |
431 | if (argc < 1 || strcmp(argv[0], "--")) | |
432 | usage_with_options(parseopt_usage, parseopt_opts); | |
433 | ||
434 | /* get the usage up to the first line with a -- on it */ | |
435 | for (;;) { | |
436 | if (strbuf_getline(&sb, stdin) == EOF) | |
437 | die("premature end of input"); | |
438 | ALLOC_GROW(usage, unb + 1, usz); | |
439 | if (!strcmp("--", sb.buf)) { | |
440 | if (unb < 1) | |
441 | die("no usage string given before the `--' separator"); | |
442 | usage[unb] = NULL; | |
443 | break; | |
444 | } | |
445 | usage[unb++] = strbuf_detach(&sb, NULL); | |
446 | } | |
447 | ||
448 | /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */ | |
449 | while (strbuf_getline(&sb, stdin) != EOF) { | |
450 | const char *s; | |
451 | char *help; | |
452 | struct option *o; | |
453 | ||
454 | if (!sb.len) | |
455 | continue; | |
456 | ||
457 | ALLOC_GROW(opts, onb + 1, osz); | |
458 | memset(opts + onb, 0, sizeof(opts[onb])); | |
459 | ||
460 | o = &opts[onb++]; | |
461 | help = findspace(sb.buf); | |
462 | if (!help || sb.buf == help) { | |
463 | o->type = OPTION_GROUP; | |
464 | o->help = xstrdup(skipspaces(sb.buf)); | |
465 | continue; | |
466 | } | |
467 | ||
468 | *help = '\0'; | |
469 | ||
470 | o->type = OPTION_CALLBACK; | |
471 | o->help = xstrdup(skipspaces(help+1)); | |
472 | o->value = &parsed; | |
473 | o->flags = PARSE_OPT_NOARG; | |
474 | o->callback = &parseopt_dump; | |
475 | ||
476 | /* name(s) */ | |
477 | s = strpbrk(sb.buf, flag_chars); | |
478 | if (s == NULL) | |
479 | s = help; | |
480 | ||
481 | if (s - sb.buf == 1) /* short option only */ | |
482 | o->short_name = *sb.buf; | |
483 | else if (sb.buf[1] != ',') /* long option only */ | |
484 | o->long_name = xmemdupz(sb.buf, s - sb.buf); | |
485 | else { | |
486 | o->short_name = *sb.buf; | |
487 | o->long_name = xmemdupz(sb.buf + 2, s - sb.buf - 2); | |
488 | } | |
489 | ||
490 | /* flags */ | |
491 | while (s < help) { | |
492 | switch (*s++) { | |
493 | case '=': | |
494 | o->flags &= ~PARSE_OPT_NOARG; | |
495 | continue; | |
496 | case '?': | |
497 | o->flags &= ~PARSE_OPT_NOARG; | |
498 | o->flags |= PARSE_OPT_OPTARG; | |
499 | continue; | |
500 | case '!': | |
501 | o->flags |= PARSE_OPT_NONEG; | |
502 | continue; | |
503 | case '*': | |
504 | o->flags |= PARSE_OPT_HIDDEN; | |
505 | continue; | |
506 | } | |
507 | s--; | |
508 | break; | |
509 | } | |
510 | ||
511 | if (s < help) | |
512 | o->argh = xmemdupz(s, help - s); | |
513 | } | |
514 | strbuf_release(&sb); | |
515 | ||
516 | /* put an OPT_END() */ | |
517 | ALLOC_GROW(opts, onb + 1, osz); | |
518 | memset(opts + onb, 0, sizeof(opts[onb])); | |
519 | argc = parse_options(argc, argv, prefix, opts, usage, | |
520 | (keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0) | | |
521 | (stop_at_non_option ? PARSE_OPT_STOP_AT_NON_OPTION : 0) | | |
522 | PARSE_OPT_SHELL_EVAL); | |
523 | ||
524 | strbuf_addstr(&parsed, " --"); | |
525 | sq_quote_argv(&parsed, argv); | |
526 | puts(parsed.buf); | |
527 | return 0; | |
528 | } | |
529 | ||
530 | static int cmd_sq_quote(int argc, const char **argv) | |
531 | { | |
532 | struct strbuf buf = STRBUF_INIT; | |
533 | ||
534 | if (argc) | |
535 | sq_quote_argv(&buf, argv); | |
536 | printf("%s\n", buf.buf); | |
537 | strbuf_release(&buf); | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | static void die_no_single_rev(int quiet) | |
543 | { | |
544 | if (quiet) | |
545 | exit(1); | |
546 | else | |
547 | die("Needed a single revision"); | |
548 | } | |
549 | ||
550 | static const char builtin_rev_parse_usage[] = | |
551 | N_("git rev-parse --parseopt [<options>] -- [<args>...]\n" | |
552 | " or: git rev-parse --sq-quote [<arg>...]\n" | |
553 | " or: git rev-parse [<options>] [<arg>...]\n" | |
554 | "\n" | |
555 | "Run \"git rev-parse --parseopt -h\" for more information on the first usage."); | |
556 | ||
557 | /* | |
558 | * Parse "opt" or "opt=<value>", setting value respectively to either | |
559 | * NULL or the string after "=". | |
560 | */ | |
561 | static int opt_with_value(const char *arg, const char *opt, const char **value) | |
562 | { | |
563 | if (skip_prefix(arg, opt, &arg)) { | |
564 | if (!*arg) { | |
565 | *value = NULL; | |
566 | return 1; | |
567 | } | |
568 | if (*arg++ == '=') { | |
569 | *value = arg; | |
570 | return 1; | |
571 | } | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
576 | static void handle_ref_opt(const char *pattern, const char *prefix) | |
577 | { | |
578 | if (pattern) | |
579 | for_each_glob_ref_in(show_reference, pattern, prefix, NULL); | |
580 | else | |
581 | for_each_ref_in(prefix, show_reference, NULL); | |
582 | clear_ref_exclusion(&ref_excludes); | |
583 | } | |
584 | ||
585 | int cmd_rev_parse(int argc, const char **argv, const char *prefix) | |
586 | { | |
587 | int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0; | |
588 | int did_repo_setup = 0; | |
589 | int has_dashdash = 0; | |
590 | int output_prefix = 0; | |
591 | struct object_id oid; | |
592 | unsigned int flags = 0; | |
593 | const char *name = NULL; | |
594 | struct object_context unused; | |
595 | struct strbuf buf = STRBUF_INIT; | |
596 | ||
597 | if (argc > 1 && !strcmp("--parseopt", argv[1])) | |
598 | return cmd_parseopt(argc - 1, argv + 1, prefix); | |
599 | ||
600 | if (argc > 1 && !strcmp("--sq-quote", argv[1])) | |
601 | return cmd_sq_quote(argc - 2, argv + 2); | |
602 | ||
603 | if (argc > 1 && !strcmp("-h", argv[1])) | |
604 | usage(builtin_rev_parse_usage); | |
605 | ||
606 | for (i = 1; i < argc; i++) { | |
607 | if (!strcmp(argv[i], "--")) { | |
608 | has_dashdash = 1; | |
609 | break; | |
610 | } | |
611 | } | |
612 | ||
613 | /* No options; just report on whether we're in a git repo or not. */ | |
614 | if (argc == 1) { | |
615 | setup_git_directory(); | |
616 | git_config(git_default_config, NULL); | |
617 | return 0; | |
618 | } | |
619 | ||
620 | for (i = 1; i < argc; i++) { | |
621 | const char *arg = argv[i]; | |
622 | ||
623 | if (!strcmp(arg, "--local-env-vars")) { | |
624 | int i; | |
625 | for (i = 0; local_repo_env[i]; i++) | |
626 | printf("%s\n", local_repo_env[i]); | |
627 | continue; | |
628 | } | |
629 | if (!strcmp(arg, "--resolve-git-dir")) { | |
630 | const char *gitdir = argv[++i]; | |
631 | if (!gitdir) | |
632 | die("--resolve-git-dir requires an argument"); | |
633 | gitdir = resolve_gitdir(gitdir); | |
634 | if (!gitdir) | |
635 | die("not a gitdir '%s'", argv[i]); | |
636 | puts(gitdir); | |
637 | continue; | |
638 | } | |
639 | ||
640 | /* The rest of the options require a git repository. */ | |
641 | if (!did_repo_setup) { | |
642 | prefix = setup_git_directory(); | |
643 | git_config(git_default_config, NULL); | |
644 | did_repo_setup = 1; | |
645 | } | |
646 | ||
647 | if (!strcmp(arg, "--git-path")) { | |
648 | if (!argv[i + 1]) | |
649 | die("--git-path requires an argument"); | |
650 | strbuf_reset(&buf); | |
651 | puts(relative_path(git_path("%s", argv[i + 1]), | |
652 | prefix, &buf)); | |
653 | i++; | |
654 | continue; | |
655 | } | |
656 | if (as_is) { | |
657 | if (show_file(arg, output_prefix) && as_is < 2) | |
658 | verify_filename(prefix, arg, 0); | |
659 | continue; | |
660 | } | |
661 | if (!strcmp(arg,"-n")) { | |
662 | if (++i >= argc) | |
663 | die("-n requires an argument"); | |
664 | if ((filter & DO_FLAGS) && (filter & DO_REVS)) { | |
665 | show(arg); | |
666 | show(argv[i]); | |
667 | } | |
668 | continue; | |
669 | } | |
670 | if (starts_with(arg, "-n")) { | |
671 | if ((filter & DO_FLAGS) && (filter & DO_REVS)) | |
672 | show(arg); | |
673 | continue; | |
674 | } | |
675 | ||
676 | if (*arg == '-') { | |
677 | if (!strcmp(arg, "--")) { | |
678 | as_is = 2; | |
679 | /* Pass on the "--" if we show anything but files.. */ | |
680 | if (filter & (DO_FLAGS | DO_REVS)) | |
681 | show_file(arg, 0); | |
682 | continue; | |
683 | } | |
684 | if (!strcmp(arg, "--default")) { | |
685 | def = argv[++i]; | |
686 | if (!def) | |
687 | die("--default requires an argument"); | |
688 | continue; | |
689 | } | |
690 | if (!strcmp(arg, "--prefix")) { | |
691 | prefix = argv[++i]; | |
692 | if (!prefix) | |
693 | die("--prefix requires an argument"); | |
694 | startup_info->prefix = prefix; | |
695 | output_prefix = 1; | |
696 | continue; | |
697 | } | |
698 | if (!strcmp(arg, "--revs-only")) { | |
699 | filter &= ~DO_NOREV; | |
700 | continue; | |
701 | } | |
702 | if (!strcmp(arg, "--no-revs")) { | |
703 | filter &= ~DO_REVS; | |
704 | continue; | |
705 | } | |
706 | if (!strcmp(arg, "--flags")) { | |
707 | filter &= ~DO_NONFLAGS; | |
708 | continue; | |
709 | } | |
710 | if (!strcmp(arg, "--no-flags")) { | |
711 | filter &= ~DO_FLAGS; | |
712 | continue; | |
713 | } | |
714 | if (!strcmp(arg, "--verify")) { | |
715 | filter &= ~(DO_FLAGS|DO_NOREV); | |
716 | verify = 1; | |
717 | continue; | |
718 | } | |
719 | if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) { | |
720 | quiet = 1; | |
721 | flags |= GET_OID_QUIETLY; | |
722 | continue; | |
723 | } | |
724 | if (opt_with_value(arg, "--short", &arg)) { | |
725 | filter &= ~(DO_FLAGS|DO_NOREV); | |
726 | verify = 1; | |
727 | abbrev = DEFAULT_ABBREV; | |
728 | if (!arg) | |
729 | continue; | |
730 | abbrev = strtoul(arg, NULL, 10); | |
731 | if (abbrev < MINIMUM_ABBREV) | |
732 | abbrev = MINIMUM_ABBREV; | |
733 | else if (40 <= abbrev) | |
734 | abbrev = 40; | |
735 | continue; | |
736 | } | |
737 | if (!strcmp(arg, "--sq")) { | |
738 | output_sq = 1; | |
739 | continue; | |
740 | } | |
741 | if (!strcmp(arg, "--not")) { | |
742 | show_type ^= REVERSED; | |
743 | continue; | |
744 | } | |
745 | if (!strcmp(arg, "--symbolic")) { | |
746 | symbolic = SHOW_SYMBOLIC_ASIS; | |
747 | continue; | |
748 | } | |
749 | if (!strcmp(arg, "--symbolic-full-name")) { | |
750 | symbolic = SHOW_SYMBOLIC_FULL; | |
751 | continue; | |
752 | } | |
753 | if (opt_with_value(arg, "--abbrev-ref", &arg)) { | |
754 | abbrev_ref = 1; | |
755 | abbrev_ref_strict = warn_ambiguous_refs; | |
756 | if (arg) { | |
757 | if (!strcmp(arg, "strict")) | |
758 | abbrev_ref_strict = 1; | |
759 | else if (!strcmp(arg, "loose")) | |
760 | abbrev_ref_strict = 0; | |
761 | else | |
762 | die("unknown mode for --abbrev-ref: %s", | |
763 | arg); | |
764 | } | |
765 | continue; | |
766 | } | |
767 | if (!strcmp(arg, "--all")) { | |
768 | for_each_ref(show_reference, NULL); | |
769 | clear_ref_exclusion(&ref_excludes); | |
770 | continue; | |
771 | } | |
772 | if (skip_prefix(arg, "--disambiguate=", &arg)) { | |
773 | for_each_abbrev(arg, show_abbrev, NULL); | |
774 | continue; | |
775 | } | |
776 | if (!strcmp(arg, "--bisect")) { | |
777 | for_each_fullref_in("refs/bisect/bad", show_reference, NULL, 0); | |
778 | for_each_fullref_in("refs/bisect/good", anti_reference, NULL, 0); | |
779 | continue; | |
780 | } | |
781 | if (opt_with_value(arg, "--branches", &arg)) { | |
782 | handle_ref_opt(arg, "refs/heads/"); | |
783 | continue; | |
784 | } | |
785 | if (opt_with_value(arg, "--tags", &arg)) { | |
786 | handle_ref_opt(arg, "refs/tags/"); | |
787 | continue; | |
788 | } | |
789 | if (skip_prefix(arg, "--glob=", &arg)) { | |
790 | handle_ref_opt(arg, NULL); | |
791 | continue; | |
792 | } | |
793 | if (opt_with_value(arg, "--remotes", &arg)) { | |
794 | handle_ref_opt(arg, "refs/remotes/"); | |
795 | continue; | |
796 | } | |
797 | if (skip_prefix(arg, "--exclude=", &arg)) { | |
798 | add_ref_exclusion(&ref_excludes, arg); | |
799 | continue; | |
800 | } | |
801 | if (!strcmp(arg, "--show-toplevel")) { | |
802 | const char *work_tree = get_git_work_tree(); | |
803 | if (work_tree) | |
804 | puts(work_tree); | |
805 | continue; | |
806 | } | |
807 | if (!strcmp(arg, "--show-superproject-working-tree")) { | |
808 | const char *superproject = get_superproject_working_tree(); | |
809 | if (superproject) | |
810 | puts(superproject); | |
811 | continue; | |
812 | } | |
813 | if (!strcmp(arg, "--show-prefix")) { | |
814 | if (prefix) | |
815 | puts(prefix); | |
816 | else | |
817 | putchar('\n'); | |
818 | continue; | |
819 | } | |
820 | if (!strcmp(arg, "--show-cdup")) { | |
821 | const char *pfx = prefix; | |
822 | if (!is_inside_work_tree()) { | |
823 | const char *work_tree = | |
824 | get_git_work_tree(); | |
825 | if (work_tree) | |
826 | printf("%s\n", work_tree); | |
827 | continue; | |
828 | } | |
829 | while (pfx) { | |
830 | pfx = strchr(pfx, '/'); | |
831 | if (pfx) { | |
832 | pfx++; | |
833 | printf("../"); | |
834 | } | |
835 | } | |
836 | putchar('\n'); | |
837 | continue; | |
838 | } | |
839 | if (!strcmp(arg, "--git-dir") || | |
840 | !strcmp(arg, "--absolute-git-dir")) { | |
841 | const char *gitdir = getenv(GIT_DIR_ENVIRONMENT); | |
842 | char *cwd; | |
843 | int len; | |
844 | if (arg[2] == 'g') { /* --git-dir */ | |
845 | if (gitdir) { | |
846 | puts(gitdir); | |
847 | continue; | |
848 | } | |
849 | if (!prefix) { | |
850 | puts(".git"); | |
851 | continue; | |
852 | } | |
853 | } else { /* --absolute-git-dir */ | |
854 | if (!gitdir && !prefix) | |
855 | gitdir = ".git"; | |
856 | if (gitdir) { | |
857 | puts(real_path(gitdir)); | |
858 | continue; | |
859 | } | |
860 | } | |
861 | cwd = xgetcwd(); | |
862 | len = strlen(cwd); | |
863 | printf("%s%s.git\n", cwd, len && cwd[len-1] != '/' ? "/" : ""); | |
864 | free(cwd); | |
865 | continue; | |
866 | } | |
867 | if (!strcmp(arg, "--git-common-dir")) { | |
868 | strbuf_reset(&buf); | |
869 | puts(relative_path(get_git_common_dir(), | |
870 | prefix, &buf)); | |
871 | continue; | |
872 | } | |
873 | if (!strcmp(arg, "--is-inside-git-dir")) { | |
874 | printf("%s\n", is_inside_git_dir() ? "true" | |
875 | : "false"); | |
876 | continue; | |
877 | } | |
878 | if (!strcmp(arg, "--is-inside-work-tree")) { | |
879 | printf("%s\n", is_inside_work_tree() ? "true" | |
880 | : "false"); | |
881 | continue; | |
882 | } | |
883 | if (!strcmp(arg, "--is-bare-repository")) { | |
884 | printf("%s\n", is_bare_repository() ? "true" | |
885 | : "false"); | |
886 | continue; | |
887 | } | |
888 | if (!strcmp(arg, "--is-shallow-repository")) { | |
889 | printf("%s\n", | |
890 | is_repository_shallow(the_repository) ? "true" | |
891 | : "false"); | |
892 | continue; | |
893 | } | |
894 | if (!strcmp(arg, "--shared-index-path")) { | |
895 | if (read_cache() < 0) | |
896 | die(_("Could not read the index")); | |
897 | if (the_index.split_index) { | |
898 | const struct object_id *oid = &the_index.split_index->base_oid; | |
899 | const char *path = git_path("sharedindex.%s", oid_to_hex(oid)); | |
900 | strbuf_reset(&buf); | |
901 | puts(relative_path(path, prefix, &buf)); | |
902 | } | |
903 | continue; | |
904 | } | |
905 | if (skip_prefix(arg, "--since=", &arg)) { | |
906 | show_datestring("--max-age=", arg); | |
907 | continue; | |
908 | } | |
909 | if (skip_prefix(arg, "--after=", &arg)) { | |
910 | show_datestring("--max-age=", arg); | |
911 | continue; | |
912 | } | |
913 | if (skip_prefix(arg, "--before=", &arg)) { | |
914 | show_datestring("--min-age=", arg); | |
915 | continue; | |
916 | } | |
917 | if (skip_prefix(arg, "--until=", &arg)) { | |
918 | show_datestring("--min-age=", arg); | |
919 | continue; | |
920 | } | |
921 | if (show_flag(arg) && verify) | |
922 | die_no_single_rev(quiet); | |
923 | continue; | |
924 | } | |
925 | ||
926 | /* Not a flag argument */ | |
927 | if (try_difference(arg)) | |
928 | continue; | |
929 | if (try_parent_shorthands(arg)) | |
930 | continue; | |
931 | name = arg; | |
932 | type = NORMAL; | |
933 | if (*arg == '^') { | |
934 | name++; | |
935 | type = REVERSED; | |
936 | } | |
937 | if (!get_oid_with_context(the_repository, name, | |
938 | flags, &oid, &unused)) { | |
939 | if (verify) | |
940 | revs_count++; | |
941 | else | |
942 | show_rev(type, &oid, name); | |
943 | continue; | |
944 | } | |
945 | if (verify) | |
946 | die_no_single_rev(quiet); | |
947 | if (has_dashdash) | |
948 | die("bad revision '%s'", arg); | |
949 | as_is = 1; | |
950 | if (!show_file(arg, output_prefix)) | |
951 | continue; | |
952 | verify_filename(prefix, arg, 1); | |
953 | } | |
954 | strbuf_release(&buf); | |
955 | if (verify) { | |
956 | if (revs_count == 1) { | |
957 | show_rev(type, &oid, name); | |
958 | return 0; | |
959 | } else if (revs_count == 0 && show_default()) | |
960 | return 0; | |
961 | die_no_single_rev(quiet); | |
962 | } else | |
963 | show_default(); | |
964 | return 0; | |
965 | } |