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1/*
2 * rev-parse.c
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 */
6
7#define USE_THE_REPOSITORY_VARIABLE
8#define DISABLE_SIGN_COMPARE_WARNINGS
9
10#include "builtin.h"
11
12#include "abspath.h"
13#include "config.h"
14#include "commit.h"
15#include "environment.h"
16#include "gettext.h"
17#include "hash.h"
18#include "hex.h"
19#include "refs.h"
20#include "quote.h"
21#include "object-name.h"
22#include "parse-options.h"
23#include "path.h"
24#include "diff.h"
25#include "read-cache-ll.h"
26#include "repo-settings.h"
27#include "repository.h"
28#include "revision.h"
29#include "setup.h"
30#include "split-index.h"
31#include "submodule.h"
32#include "commit-reach.h"
33#include "shallow.h"
34#include "object-file-convert.h"
35
36#define DO_REVS 1
37#define DO_NOREV 2
38#define DO_FLAGS 4
39#define DO_NONFLAGS 8
40static int filter = ~0;
41
42static const char *def;
43
44#define NORMAL 0
45#define REVERSED 1
46static int show_type = NORMAL;
47
48#define SHOW_SYMBOLIC_ASIS 1
49#define SHOW_SYMBOLIC_FULL 2
50static int symbolic;
51static int abbrev;
52static int abbrev_ref;
53static int abbrev_ref_strict;
54static int output_sq;
55
56static int stuck_long;
57static struct ref_exclusions ref_excludes = REF_EXCLUSIONS_INIT;
58
59/*
60 * Some arguments are relevant "revision" arguments,
61 * others are about output format or other details.
62 * This sorts it all out.
63 */
64static int is_rev_argument(const char *arg)
65{
66 static const char *rev_args[] = {
67 "--all",
68 "--bisect",
69 "--dense",
70 "--branches=",
71 "--branches",
72 "--header",
73 "--ignore-missing",
74 "--max-age=",
75 "--max-count=",
76 "--min-age=",
77 "--no-merges",
78 "--min-parents=",
79 "--no-min-parents",
80 "--max-parents=",
81 "--no-max-parents",
82 "--objects",
83 "--objects-edge",
84 "--parents",
85 "--pretty",
86 "--remotes=",
87 "--remotes",
88 "--glob=",
89 "--sparse",
90 "--tags=",
91 "--tags",
92 "--topo-order",
93 "--date-order",
94 "--unpacked",
95 NULL
96 };
97 const char **p = rev_args;
98
99 /* accept -<digit>, like traditional "head" */
100 if ((*arg == '-') && isdigit(arg[1]))
101 return 1;
102
103 for (;;) {
104 const char *str = *p++;
105 int len;
106 if (!str)
107 return 0;
108 len = strlen(str);
109 if (!strcmp(arg, str) ||
110 (str[len-1] == '=' && !strncmp(arg, str, len)))
111 return 1;
112 }
113}
114
115/* Output argument as a string, either SQ or normal */
116static void show(const char *arg)
117{
118 if (output_sq) {
119 int sq = '\'', ch;
120
121 putchar(sq);
122 while ((ch = *arg++)) {
123 if (ch == sq)
124 fputs("'\\'", stdout);
125 putchar(ch);
126 }
127 putchar(sq);
128 putchar(' ');
129 }
130 else
131 puts(arg);
132}
133
134/* Like show(), but with a negation prefix according to type */
135static void show_with_type(int type, const char *arg)
136{
137 if (type != show_type)
138 putchar('^');
139 show(arg);
140}
141
142/* Output a revision, only if filter allows it */
143static void show_rev(int type, const struct object_id *oid, const char *name)
144{
145 if (!(filter & DO_REVS))
146 return;
147 def = NULL;
148
149 if ((symbolic || abbrev_ref) && name) {
150 if (symbolic == SHOW_SYMBOLIC_FULL || abbrev_ref) {
151 struct object_id discard;
152 char *full;
153
154 switch (repo_dwim_ref(the_repository, name,
155 strlen(name), &discard, &full,
156 0)) {
157 case 0:
158 /*
159 * Not found -- not a ref. We could
160 * emit "name" here, but symbolic-full
161 * users are interested in finding the
162 * refs spelled in full, and they would
163 * need to filter non-refs if we did so.
164 */
165 break;
166 case 1: /* happy */
167 if (abbrev_ref) {
168 char *old = full;
169 full = refs_shorten_unambiguous_ref(get_main_ref_store(the_repository),
170 full,
171 abbrev_ref_strict);
172 free(old);
173 }
174 show_with_type(type, full);
175 break;
176 default: /* ambiguous */
177 error("refname '%s' is ambiguous", name);
178 break;
179 }
180 free(full);
181 } else {
182 show_with_type(type, name);
183 }
184 }
185 else if (abbrev)
186 show_with_type(type,
187 repo_find_unique_abbrev(the_repository, oid, abbrev));
188 else
189 show_with_type(type, oid_to_hex(oid));
190}
191
192/* Output a flag, only if filter allows it. */
193static int show_flag(const char *arg)
194{
195 if (!(filter & DO_FLAGS))
196 return 0;
197 if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) {
198 show(arg);
199 return 1;
200 }
201 return 0;
202}
203
204static int show_default(void)
205{
206 const char *s = def;
207
208 if (s) {
209 struct object_id oid;
210
211 def = NULL;
212 if (!repo_get_oid(the_repository, s, &oid)) {
213 show_rev(NORMAL, &oid, s);
214 return 1;
215 }
216 }
217 return 0;
218}
219
220static int show_reference(const char *refname, const char *referent UNUSED, const struct object_id *oid,
221 int flag UNUSED, void *cb_data UNUSED)
222{
223 if (ref_excluded(&ref_excludes, refname))
224 return 0;
225 show_rev(NORMAL, oid, refname);
226 return 0;
227}
228
229static int anti_reference(const char *refname, const char *referent UNUSED, const struct object_id *oid,
230 int flag UNUSED, void *cb_data UNUSED)
231{
232 show_rev(REVERSED, oid, refname);
233 return 0;
234}
235
236static int show_abbrev(const struct object_id *oid, void *cb_data UNUSED)
237{
238 show_rev(NORMAL, oid, NULL);
239 return 0;
240}
241
242static void show_datestring(const char *flag, const char *datestr)
243{
244 char *buffer;
245
246 /* date handling requires both flags and revs */
247 if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
248 return;
249 buffer = xstrfmt("%s%"PRItime, flag, approxidate(datestr));
250 show(buffer);
251 free(buffer);
252}
253
254static int show_file(const char *arg, int output_prefix)
255{
256 show_default();
257 if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
258 if (output_prefix) {
259 const char *prefix = startup_info->prefix;
260 char *fname = prefix_filename(prefix, arg);
261 show(fname);
262 free(fname);
263 } else
264 show(arg);
265 return 1;
266 }
267 return 0;
268}
269
270static int try_difference(const char *arg)
271{
272 char *dotdot;
273 struct object_id start_oid;
274 struct object_id end_oid;
275 const char *end;
276 const char *start;
277 int symmetric;
278 static const char head_by_default[] = "HEAD";
279
280 if (!(dotdot = strstr(arg, "..")))
281 return 0;
282 end = dotdot + 2;
283 start = arg;
284 symmetric = (*end == '.');
285
286 *dotdot = 0;
287 end += symmetric;
288
289 if (!*end)
290 end = head_by_default;
291 if (dotdot == arg)
292 start = head_by_default;
293
294 if (start == head_by_default && end == head_by_default &&
295 !symmetric) {
296 /*
297 * Just ".."? That is not a range but the
298 * pathspec for the parent directory.
299 */
300 *dotdot = '.';
301 return 0;
302 }
303
304 if (!repo_get_oid_committish(the_repository, start, &start_oid) && !repo_get_oid_committish(the_repository, end, &end_oid)) {
305 show_rev(NORMAL, &end_oid, end);
306 show_rev(symmetric ? NORMAL : REVERSED, &start_oid, start);
307 if (symmetric) {
308 struct commit_list *exclude = NULL;
309 struct commit *a, *b;
310 a = lookup_commit_reference(the_repository, &start_oid);
311 b = lookup_commit_reference(the_repository, &end_oid);
312 if (!a || !b) {
313 *dotdot = '.';
314 return 0;
315 }
316 if (repo_get_merge_bases(the_repository, a, b, &exclude) < 0)
317 exit(128);
318 while (exclude) {
319 struct commit *commit = pop_commit(&exclude);
320 show_rev(REVERSED, &commit->object.oid, NULL);
321 }
322 }
323 *dotdot = '.';
324 return 1;
325 }
326 *dotdot = '.';
327 return 0;
328}
329
330static int try_parent_shorthands(const char *arg)
331{
332 char *dotdot;
333 struct object_id oid;
334 struct commit *commit;
335 struct commit_list *parents;
336 int parent_number;
337 int include_rev = 0;
338 int include_parents = 0;
339 int exclude_parent = 0;
340
341 if ((dotdot = strstr(arg, "^!"))) {
342 include_rev = 1;
343 if (dotdot[2])
344 return 0;
345 } else if ((dotdot = strstr(arg, "^@"))) {
346 include_parents = 1;
347 if (dotdot[2])
348 return 0;
349 } else if ((dotdot = strstr(arg, "^-"))) {
350 include_rev = 1;
351 exclude_parent = 1;
352
353 if (dotdot[2]) {
354 char *end;
355 exclude_parent = strtoul(dotdot + 2, &end, 10);
356 if (*end != '\0' || !exclude_parent)
357 return 0;
358 }
359 } else
360 return 0;
361
362 *dotdot = 0;
363 if (repo_get_oid_committish(the_repository, arg, &oid) ||
364 !(commit = lookup_commit_reference(the_repository, &oid))) {
365 *dotdot = '^';
366 return 0;
367 }
368
369 if (exclude_parent &&
370 exclude_parent > commit_list_count(commit->parents)) {
371 *dotdot = '^';
372 return 0;
373 }
374
375 if (include_rev)
376 show_rev(NORMAL, &oid, arg);
377 for (parents = commit->parents, parent_number = 1;
378 parents;
379 parents = parents->next, parent_number++) {
380 char *name = NULL;
381
382 if (exclude_parent && parent_number != exclude_parent)
383 continue;
384
385 if (symbolic)
386 name = xstrfmt("%s^%d", arg, parent_number);
387 show_rev(include_parents ? NORMAL : REVERSED,
388 &parents->item->object.oid, name);
389 free(name);
390 }
391
392 *dotdot = '^';
393 return 1;
394}
395
396static int parseopt_dump(const struct option *o, const char *arg, int unset)
397{
398 struct strbuf *parsed = o->value;
399 if (unset)
400 strbuf_addf(parsed, " --no-%s", o->long_name);
401 else if (o->short_name && (o->long_name == NULL || !stuck_long))
402 strbuf_addf(parsed, " -%c", o->short_name);
403 else
404 strbuf_addf(parsed, " --%s", o->long_name);
405 if (arg) {
406 if (!stuck_long)
407 strbuf_addch(parsed, ' ');
408 else if (o->long_name)
409 strbuf_addch(parsed, '=');
410 sq_quote_buf(parsed, arg);
411 }
412 return 0;
413}
414
415static const char *skipspaces(const char *s)
416{
417 while (isspace(*s))
418 s++;
419 return s;
420}
421
422static char *findspace(const char *s)
423{
424 for (; *s; s++)
425 if (isspace(*s))
426 return (char*)s;
427 return NULL;
428}
429
430static int cmd_parseopt(int argc, const char **argv, const char *prefix)
431{
432 int keep_dashdash = 0, stop_at_non_option = 0;
433 char const * const parseopt_usage[] = {
434 N_("git rev-parse --parseopt [<options>] -- [<args>...]"),
435 NULL
436 };
437 struct option parseopt_opts[] = {
438 OPT_BOOL(0, "keep-dashdash", &keep_dashdash,
439 N_("keep the `--` passed as an arg")),
440 OPT_BOOL(0, "stop-at-non-option", &stop_at_non_option,
441 N_("stop parsing after the "
442 "first non-option argument")),
443 OPT_BOOL(0, "stuck-long", &stuck_long,
444 N_("output in stuck long form")),
445 OPT_END(),
446 };
447 struct strbuf sb = STRBUF_INIT, parsed = STRBUF_INIT;
448 struct strvec longnames = STRVEC_INIT;
449 struct strvec usage = STRVEC_INIT;
450 struct option *opts = NULL;
451 size_t opts_nr = 0, opts_alloc = 0;
452
453 strbuf_addstr(&parsed, "set --");
454 argc = parse_options(argc, argv, prefix, parseopt_opts, parseopt_usage,
455 PARSE_OPT_KEEP_DASHDASH);
456 if (argc < 1 || strcmp(argv[0], "--"))
457 usage_with_options(parseopt_usage, parseopt_opts);
458
459 /* get the usage up to the first line with a -- on it */
460 for (;;) {
461 strbuf_reset(&sb);
462 if (strbuf_getline(&sb, stdin) == EOF)
463 die(_("premature end of input"));
464 if (!strcmp("--", sb.buf)) {
465 if (!usage.nr)
466 die(_("no usage string given before the `--' separator"));
467 break;
468 }
469
470 strvec_push(&usage, sb.buf);
471 }
472
473 /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */
474 while (strbuf_getline(&sb, stdin) != EOF) {
475 const char *s;
476 char *help;
477 struct option *o;
478
479 if (!sb.len)
480 continue;
481
482 ALLOC_GROW(opts, opts_nr + 1, opts_alloc);
483 memset(opts + opts_nr, 0, sizeof(*opts));
484
485 o = &opts[opts_nr++];
486 help = findspace(sb.buf);
487 if (!help || sb.buf == help) {
488 o->type = OPTION_GROUP;
489 o->help = xstrdup(skipspaces(sb.buf));
490 continue;
491 }
492
493 *help = '\0';
494
495 o->type = OPTION_CALLBACK;
496 o->help = xstrdup(skipspaces(help+1));
497 o->value = &parsed;
498 o->flags = PARSE_OPT_NOARG;
499 o->callback = &parseopt_dump;
500
501 /* name(s) */
502 s = strpbrk(sb.buf, "*=?!");
503 if (!s)
504 s = help;
505
506 if (s == sb.buf)
507 die(_("missing opt-spec before option flags"));
508
509 if (s - sb.buf == 1) { /* short option only */
510 o->short_name = *sb.buf;
511 } else if (sb.buf[1] != ',') { /* long option only */
512 o->long_name = strvec_pushf(&longnames, "%.*s",
513 (int)(s - sb.buf), sb.buf);
514 } else {
515 o->short_name = *sb.buf;
516 o->long_name = strvec_pushf(&longnames, "%.*s",
517 (int)(s - sb.buf - 2), sb.buf + 2);
518 }
519
520 /* flags */
521 while (s < help) {
522 switch (*s++) {
523 case '=':
524 o->flags &= ~PARSE_OPT_NOARG;
525 continue;
526 case '?':
527 o->flags &= ~PARSE_OPT_NOARG;
528 o->flags |= PARSE_OPT_OPTARG;
529 continue;
530 case '!':
531 o->flags |= PARSE_OPT_NONEG;
532 continue;
533 case '*':
534 o->flags |= PARSE_OPT_HIDDEN;
535 continue;
536 }
537 s--;
538 break;
539 }
540
541 if (s < help)
542 o->argh = xmemdupz(s, help - s);
543 }
544 strbuf_release(&sb);
545
546 /* put an OPT_END() */
547 ALLOC_GROW(opts, opts_nr + 1, opts_alloc);
548 memset(opts + opts_nr, 0, sizeof(*opts));
549 argc = parse_options(argc, argv, prefix, opts, usage.v,
550 (keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0) |
551 (stop_at_non_option ? PARSE_OPT_STOP_AT_NON_OPTION : 0) |
552 PARSE_OPT_SHELL_EVAL);
553
554 strbuf_addstr(&parsed, " --");
555 sq_quote_argv(&parsed, argv);
556 puts(parsed.buf);
557
558 strbuf_release(&parsed);
559 strbuf_release(&sb);
560 strvec_clear(&longnames);
561 strvec_clear(&usage);
562 for (size_t i = 0; i < opts_nr; i++) {
563 free((char *) opts[i].help);
564 free((char *) opts[i].argh);
565 }
566 free(opts);
567 return 0;
568}
569
570static int cmd_sq_quote(int argc, const char **argv)
571{
572 struct strbuf buf = STRBUF_INIT;
573
574 if (argc)
575 sq_quote_argv(&buf, argv);
576 printf("%s\n", buf.buf);
577 strbuf_release(&buf);
578
579 return 0;
580}
581
582static void die_no_single_rev(int quiet)
583{
584 if (quiet)
585 exit(1);
586 else
587 die(_("Needed a single revision"));
588}
589
590static const char builtin_rev_parse_usage[] =
591N_("git rev-parse --parseopt [<options>] -- [<args>...]\n"
592 " or: git rev-parse --sq-quote [<arg>...]\n"
593 " or: git rev-parse [<options>] [<arg>...]\n"
594 "\n"
595 "Run \"git rev-parse --parseopt -h\" for more information on the first usage.");
596
597/*
598 * Parse "opt" or "opt=<value>", setting value respectively to either
599 * NULL or the string after "=".
600 */
601static int opt_with_value(const char *arg, const char *opt, const char **value)
602{
603 if (skip_prefix(arg, opt, &arg)) {
604 if (!*arg) {
605 *value = NULL;
606 return 1;
607 }
608 if (*arg++ == '=') {
609 *value = arg;
610 return 1;
611 }
612 }
613 return 0;
614}
615
616static void handle_ref_opt(const char *pattern, const char *prefix)
617{
618 if (pattern)
619 refs_for_each_glob_ref_in(get_main_ref_store(the_repository),
620 show_reference, pattern, prefix,
621 NULL);
622 else
623 refs_for_each_ref_in(get_main_ref_store(the_repository),
624 prefix, show_reference, NULL);
625 clear_ref_exclusions(&ref_excludes);
626}
627
628enum format_type {
629 /* We would like a relative path. */
630 FORMAT_RELATIVE,
631 /* We would like a canonical absolute path. */
632 FORMAT_CANONICAL,
633 /* We would like the default behavior. */
634 FORMAT_DEFAULT,
635};
636
637enum default_type {
638 /* Our default is a relative path. */
639 DEFAULT_RELATIVE,
640 /* Our default is a relative path if there's a shared root. */
641 DEFAULT_RELATIVE_IF_SHARED,
642 /* Our default is a canonical absolute path. */
643 DEFAULT_CANONICAL,
644 /* Our default is not to modify the item. */
645 DEFAULT_UNMODIFIED,
646};
647
648static void print_path(const char *path, const char *prefix, enum format_type format, enum default_type def)
649{
650 char *cwd = NULL;
651 /*
652 * We don't ever produce a relative path if prefix is NULL, so set the
653 * prefix to the current directory so that we can produce a relative
654 * path whenever possible. If we're using RELATIVE_IF_SHARED mode, then
655 * we want an absolute path unless the two share a common prefix, so don't
656 * set it in that case, since doing so causes a relative path to always
657 * be produced if possible.
658 */
659 if (!prefix && (format != FORMAT_DEFAULT || def != DEFAULT_RELATIVE_IF_SHARED))
660 prefix = cwd = xgetcwd();
661 if (format == FORMAT_DEFAULT && def == DEFAULT_UNMODIFIED) {
662 puts(path);
663 } else if (format == FORMAT_RELATIVE ||
664 (format == FORMAT_DEFAULT && def == DEFAULT_RELATIVE)) {
665 /*
666 * In order for relative_path to work as expected, we need to
667 * make sure that both paths are absolute paths. If we don't,
668 * we can end up with an unexpected absolute path that the user
669 * didn't want.
670 */
671 struct strbuf buf = STRBUF_INIT, realbuf = STRBUF_INIT, prefixbuf = STRBUF_INIT;
672 if (!is_absolute_path(path)) {
673 strbuf_realpath_forgiving(&realbuf, path, 1);
674 path = realbuf.buf;
675 }
676 if (!is_absolute_path(prefix)) {
677 strbuf_realpath_forgiving(&prefixbuf, prefix, 1);
678 prefix = prefixbuf.buf;
679 }
680 puts(relative_path(path, prefix, &buf));
681 strbuf_release(&buf);
682 strbuf_release(&realbuf);
683 strbuf_release(&prefixbuf);
684 } else if (format == FORMAT_DEFAULT && def == DEFAULT_RELATIVE_IF_SHARED) {
685 struct strbuf buf = STRBUF_INIT;
686 puts(relative_path(path, prefix, &buf));
687 strbuf_release(&buf);
688 } else {
689 struct strbuf buf = STRBUF_INIT;
690 strbuf_realpath_forgiving(&buf, path, 1);
691 puts(buf.buf);
692 strbuf_release(&buf);
693 }
694 free(cwd);
695}
696
697int cmd_rev_parse(int argc,
698 const char **argv,
699 const char *prefix,
700 struct repository *repo UNUSED)
701{
702 int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
703 const struct git_hash_algo *output_algo = NULL;
704 const struct git_hash_algo *compat = NULL;
705 int did_repo_setup = 0;
706 int has_dashdash = 0;
707 int output_prefix = 0;
708 struct object_id oid;
709 unsigned int flags = 0;
710 const char *name = NULL;
711 struct strbuf buf = STRBUF_INIT;
712 int seen_end_of_options = 0;
713 enum format_type format = FORMAT_DEFAULT;
714
715 show_usage_if_asked(argc, argv, builtin_rev_parse_usage);
716
717 if (argc > 1 && !strcmp("--parseopt", argv[1]))
718 return cmd_parseopt(argc - 1, argv + 1, prefix);
719
720 if (argc > 1 && !strcmp("--sq-quote", argv[1]))
721 return cmd_sq_quote(argc - 2, argv + 2);
722
723 if (argc > 1 && !strcmp("-h", argv[1]))
724 usage(builtin_rev_parse_usage);
725
726 for (i = 1; i < argc; i++) {
727 if (!strcmp(argv[i], "--")) {
728 has_dashdash = 1;
729 break;
730 }
731 }
732
733 /* No options; just report on whether we're in a git repo or not. */
734 if (argc == 1) {
735 setup_git_directory();
736 repo_config(the_repository, git_default_config, NULL);
737 return 0;
738 }
739
740 for (i = 1; i < argc; i++) {
741 const char *arg = argv[i];
742
743 if (as_is) {
744 if (show_file(arg, output_prefix) && as_is < 2)
745 verify_filename(prefix, arg, 0);
746 continue;
747 }
748
749 if (!seen_end_of_options) {
750 if (!strcmp(arg, "--local-env-vars")) {
751 int i;
752 for (i = 0; local_repo_env[i]; i++)
753 printf("%s\n", local_repo_env[i]);
754 continue;
755 }
756 if (!strcmp(arg, "--resolve-git-dir")) {
757 const char *gitdir = argv[++i];
758 if (!gitdir)
759 die(_("--resolve-git-dir requires an argument"));
760 gitdir = resolve_gitdir(gitdir);
761 if (!gitdir)
762 die(_("not a gitdir '%s'"), argv[i]);
763 puts(gitdir);
764 continue;
765 }
766 }
767
768 /* The rest of the options require a git repository. */
769 if (!did_repo_setup) {
770 prefix = setup_git_directory();
771 repo_config(the_repository, git_default_config, NULL);
772 did_repo_setup = 1;
773
774 prepare_repo_settings(the_repository);
775 the_repository->settings.command_requires_full_index = 0;
776 compat = the_repository->compat_hash_algo;
777 }
778
779 if (!strcmp(arg, "--")) {
780 as_is = 2;
781 /* Pass on the "--" if we show anything but files.. */
782 if (filter & (DO_FLAGS | DO_REVS))
783 show_file(arg, 0);
784 continue;
785 }
786
787 if (!seen_end_of_options && *arg == '-') {
788 if (!strcmp(arg, "--git-path")) {
789 if (!argv[i + 1])
790 die(_("--git-path requires an argument"));
791 print_path(repo_git_path_replace(the_repository, &buf,
792 "%s", argv[i + 1]), prefix,
793 format,
794 DEFAULT_RELATIVE_IF_SHARED);
795 i++;
796 continue;
797 }
798 if (!strcmp(arg,"-n")) {
799 if (++i >= argc)
800 die(_("-n requires an argument"));
801 if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
802 show(arg);
803 show(argv[i]);
804 }
805 continue;
806 }
807 if (starts_with(arg, "-n")) {
808 if ((filter & DO_FLAGS) && (filter & DO_REVS))
809 show(arg);
810 continue;
811 }
812 if (opt_with_value(arg, "--path-format", &arg)) {
813 if (!arg)
814 die(_("--path-format requires an argument"));
815 if (!strcmp(arg, "absolute")) {
816 format = FORMAT_CANONICAL;
817 } else if (!strcmp(arg, "relative")) {
818 format = FORMAT_RELATIVE;
819 } else {
820 die(_("unknown argument to --path-format: %s"), arg);
821 }
822 continue;
823 }
824 if (!strcmp(arg, "--default")) {
825 def = argv[++i];
826 if (!def)
827 die(_("--default requires an argument"));
828 continue;
829 }
830 if (!strcmp(arg, "--prefix")) {
831 prefix = argv[++i];
832 if (!prefix)
833 die(_("--prefix requires an argument"));
834 startup_info->prefix = prefix;
835 output_prefix = 1;
836 continue;
837 }
838 if (!strcmp(arg, "--revs-only")) {
839 filter &= ~DO_NOREV;
840 continue;
841 }
842 if (!strcmp(arg, "--no-revs")) {
843 filter &= ~DO_REVS;
844 continue;
845 }
846 if (!strcmp(arg, "--flags")) {
847 filter &= ~DO_NONFLAGS;
848 continue;
849 }
850 if (!strcmp(arg, "--no-flags")) {
851 filter &= ~DO_FLAGS;
852 continue;
853 }
854 if (!strcmp(arg, "--verify")) {
855 filter &= ~(DO_FLAGS|DO_NOREV);
856 verify = 1;
857 continue;
858 }
859 if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) {
860 quiet = 1;
861 flags |= GET_OID_QUIETLY;
862 continue;
863 }
864 if (opt_with_value(arg, "--output-object-format", &arg)) {
865 if (!arg)
866 die(_("no object format specified"));
867 if (!strcmp(arg, the_hash_algo->name) ||
868 !strcmp(arg, "storage")) {
869 flags |= GET_OID_HASH_ANY;
870 output_algo = the_hash_algo;
871 continue;
872 }
873 else if (compat && !strcmp(arg, compat->name)) {
874 flags |= GET_OID_HASH_ANY;
875 output_algo = compat;
876 continue;
877 }
878 else die(_("unsupported object format: %s"), arg);
879 }
880 if (opt_with_value(arg, "--short", &arg)) {
881 filter &= ~(DO_FLAGS|DO_NOREV);
882 verify = 1;
883 abbrev = DEFAULT_ABBREV;
884 if (!arg)
885 continue;
886 abbrev = strtoul(arg, NULL, 10);
887 if (abbrev < MINIMUM_ABBREV)
888 abbrev = MINIMUM_ABBREV;
889 else if ((int)the_hash_algo->hexsz <= abbrev)
890 abbrev = the_hash_algo->hexsz;
891 continue;
892 }
893 if (!strcmp(arg, "--sq")) {
894 output_sq = 1;
895 continue;
896 }
897 if (!strcmp(arg, "--not")) {
898 show_type ^= REVERSED;
899 continue;
900 }
901 if (!strcmp(arg, "--symbolic")) {
902 symbolic = SHOW_SYMBOLIC_ASIS;
903 continue;
904 }
905 if (!strcmp(arg, "--symbolic-full-name")) {
906 symbolic = SHOW_SYMBOLIC_FULL;
907 continue;
908 }
909 if (opt_with_value(arg, "--abbrev-ref", &arg)) {
910 abbrev_ref = 1;
911 abbrev_ref_strict =
912 repo_settings_get_warn_ambiguous_refs(the_repository);
913 if (arg) {
914 if (!strcmp(arg, "strict"))
915 abbrev_ref_strict = 1;
916 else if (!strcmp(arg, "loose"))
917 abbrev_ref_strict = 0;
918 else
919 die(_("unknown mode for --abbrev-ref: %s"),
920 arg);
921 }
922 continue;
923 }
924 if (!strcmp(arg, "--all")) {
925 refs_for_each_ref(get_main_ref_store(the_repository),
926 show_reference, NULL);
927 clear_ref_exclusions(&ref_excludes);
928 continue;
929 }
930 if (skip_prefix(arg, "--disambiguate=", &arg)) {
931 repo_for_each_abbrev(the_repository, arg, the_hash_algo,
932 show_abbrev, NULL);
933 continue;
934 }
935 if (!strcmp(arg, "--bisect")) {
936 refs_for_each_fullref_in(get_main_ref_store(the_repository),
937 "refs/bisect/bad",
938 NULL, show_reference,
939 NULL);
940 refs_for_each_fullref_in(get_main_ref_store(the_repository),
941 "refs/bisect/good",
942 NULL, anti_reference,
943 NULL);
944 continue;
945 }
946 if (opt_with_value(arg, "--branches", &arg)) {
947 if (ref_excludes.hidden_refs_configured)
948 return error(_("options '%s' and '%s' cannot be used together"),
949 "--exclude-hidden", "--branches");
950 handle_ref_opt(arg, "refs/heads/");
951 continue;
952 }
953 if (opt_with_value(arg, "--tags", &arg)) {
954 if (ref_excludes.hidden_refs_configured)
955 return error(_("options '%s' and '%s' cannot be used together"),
956 "--exclude-hidden", "--tags");
957 handle_ref_opt(arg, "refs/tags/");
958 continue;
959 }
960 if (skip_prefix(arg, "--glob=", &arg)) {
961 handle_ref_opt(arg, NULL);
962 continue;
963 }
964 if (opt_with_value(arg, "--remotes", &arg)) {
965 if (ref_excludes.hidden_refs_configured)
966 return error(_("options '%s' and '%s' cannot be used together"),
967 "--exclude-hidden", "--remotes");
968 handle_ref_opt(arg, "refs/remotes/");
969 continue;
970 }
971 if (skip_prefix(arg, "--exclude=", &arg)) {
972 add_ref_exclusion(&ref_excludes, arg);
973 continue;
974 }
975 if (skip_prefix(arg, "--exclude-hidden=", &arg)) {
976 exclude_hidden_refs(&ref_excludes, arg);
977 continue;
978 }
979 if (!strcmp(arg, "--show-toplevel")) {
980 const char *work_tree = repo_get_work_tree(the_repository);
981 if (work_tree)
982 print_path(work_tree, prefix, format, DEFAULT_UNMODIFIED);
983 else
984 die(_("this operation must be run in a work tree"));
985 continue;
986 }
987 if (!strcmp(arg, "--show-superproject-working-tree")) {
988 struct strbuf superproject = STRBUF_INIT;
989 if (get_superproject_working_tree(&superproject))
990 print_path(superproject.buf, prefix, format, DEFAULT_UNMODIFIED);
991 strbuf_release(&superproject);
992 continue;
993 }
994 if (!strcmp(arg, "--show-prefix")) {
995 if (prefix)
996 puts(prefix);
997 else
998 putchar('\n');
999 continue;
1000 }
1001 if (!strcmp(arg, "--show-cdup")) {
1002 const char *pfx = prefix;
1003 if (!is_inside_work_tree()) {
1004 const char *work_tree =
1005 repo_get_work_tree(the_repository);
1006 if (work_tree)
1007 printf("%s\n", work_tree);
1008 continue;
1009 }
1010 while (pfx) {
1011 pfx = strchr(pfx, '/');
1012 if (pfx) {
1013 pfx++;
1014 printf("../");
1015 }
1016 }
1017 putchar('\n');
1018 continue;
1019 }
1020 if (!strcmp(arg, "--git-dir") ||
1021 !strcmp(arg, "--absolute-git-dir")) {
1022 const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
1023 char *cwd;
1024 int len;
1025 enum format_type wanted = format;
1026 if (arg[2] == 'g') { /* --git-dir */
1027 if (gitdir) {
1028 print_path(gitdir, prefix, format, DEFAULT_UNMODIFIED);
1029 continue;
1030 }
1031 if (!prefix) {
1032 print_path(".git", prefix, format, DEFAULT_UNMODIFIED);
1033 continue;
1034 }
1035 } else { /* --absolute-git-dir */
1036 wanted = FORMAT_CANONICAL;
1037 if (!gitdir && !prefix)
1038 gitdir = ".git";
1039 if (gitdir) {
1040 struct strbuf realpath = STRBUF_INIT;
1041 strbuf_realpath(&realpath, gitdir, 1);
1042 puts(realpath.buf);
1043 strbuf_release(&realpath);
1044 continue;
1045 }
1046 }
1047 cwd = xgetcwd();
1048 len = strlen(cwd);
1049 strbuf_reset(&buf);
1050 strbuf_addf(&buf, "%s%s.git", cwd, len && cwd[len-1] != '/' ? "/" : "");
1051 free(cwd);
1052 print_path(buf.buf, prefix, wanted, DEFAULT_CANONICAL);
1053 continue;
1054 }
1055 if (!strcmp(arg, "--git-common-dir")) {
1056 print_path(repo_get_common_dir(the_repository), prefix, format, DEFAULT_RELATIVE_IF_SHARED);
1057 continue;
1058 }
1059 if (!strcmp(arg, "--is-inside-git-dir")) {
1060 printf("%s\n", is_inside_git_dir() ? "true"
1061 : "false");
1062 continue;
1063 }
1064 if (!strcmp(arg, "--is-inside-work-tree")) {
1065 printf("%s\n", is_inside_work_tree() ? "true"
1066 : "false");
1067 continue;
1068 }
1069 if (!strcmp(arg, "--is-bare-repository")) {
1070 printf("%s\n", is_bare_repository() ? "true"
1071 : "false");
1072 continue;
1073 }
1074 if (!strcmp(arg, "--is-shallow-repository")) {
1075 printf("%s\n",
1076 is_repository_shallow(the_repository) ? "true"
1077 : "false");
1078 continue;
1079 }
1080 if (!strcmp(arg, "--shared-index-path")) {
1081 if (repo_read_index(the_repository) < 0)
1082 die(_("Could not read the index"));
1083 if (the_repository->index->split_index) {
1084 const struct object_id *oid = &the_repository->index->split_index->base_oid;
1085 const char *path = repo_git_path_replace(the_repository, &buf, "sharedindex.%s", oid_to_hex(oid));
1086 print_path(path, prefix, format, DEFAULT_RELATIVE);
1087 }
1088 continue;
1089 }
1090 if (skip_prefix(arg, "--since=", &arg)) {
1091 show_datestring("--max-age=", arg);
1092 continue;
1093 }
1094 if (skip_prefix(arg, "--after=", &arg)) {
1095 show_datestring("--max-age=", arg);
1096 continue;
1097 }
1098 if (skip_prefix(arg, "--before=", &arg)) {
1099 show_datestring("--min-age=", arg);
1100 continue;
1101 }
1102 if (skip_prefix(arg, "--until=", &arg)) {
1103 show_datestring("--min-age=", arg);
1104 continue;
1105 }
1106 if (opt_with_value(arg, "--show-object-format", &arg)) {
1107 const char *val = arg ? arg : "storage";
1108
1109 if (strcmp(val, "storage") &&
1110 strcmp(val, "compat") &&
1111 strcmp(val, "input") &&
1112 strcmp(val, "output"))
1113 die(_("unknown mode for --show-object-format: %s"),
1114 arg);
1115
1116 if (!strcmp(val, "compat")) {
1117 if (the_repository->compat_hash_algo)
1118 puts(the_repository->compat_hash_algo->name);
1119 else
1120 putchar('\n');
1121 } else {
1122 puts(the_hash_algo->name);
1123 }
1124 continue;
1125 }
1126 if (!strcmp(arg, "--show-ref-format")) {
1127 puts(ref_storage_format_to_name(the_repository->ref_storage_format));
1128 continue;
1129 }
1130 if (!strcmp(arg, "--end-of-options")) {
1131 seen_end_of_options = 1;
1132 if (filter & (DO_FLAGS | DO_REVS))
1133 show_file(arg, 0);
1134 continue;
1135 }
1136 if (show_flag(arg) && verify)
1137 die_no_single_rev(quiet);
1138 continue;
1139 }
1140
1141 /* Not a flag argument */
1142 if (try_difference(arg))
1143 continue;
1144 if (try_parent_shorthands(arg))
1145 continue;
1146 name = arg;
1147 type = NORMAL;
1148 if (*arg == '^') {
1149 name++;
1150 type = REVERSED;
1151 }
1152 if (!repo_get_oid_with_flags(the_repository, name, &oid,
1153 flags)) {
1154 if (output_algo)
1155 repo_oid_to_algop(the_repository, &oid,
1156 output_algo, &oid);
1157 if (verify)
1158 revs_count++;
1159 else
1160 show_rev(type, &oid, name);
1161 continue;
1162 }
1163 if (verify)
1164 die_no_single_rev(quiet);
1165 if (has_dashdash)
1166 die(_("bad revision '%s'"), arg);
1167 as_is = 1;
1168 if (!show_file(arg, output_prefix))
1169 continue;
1170 verify_filename(prefix, arg, 1);
1171 }
1172 strbuf_release(&buf);
1173 if (verify) {
1174 if (revs_count == 1) {
1175 show_rev(type, &oid, name);
1176 return 0;
1177 } else if (revs_count == 0 && show_default())
1178 return 0;
1179 die_no_single_rev(quiet);
1180 } else
1181 show_default();
1182 return 0;
1183}