sha1-name.c: remove implicit dependency on the_index
[git/git.git] / builtin / rev-parse.c
CommitLineData
178cb243
LT
1/*
2 * rev-parse.c
3 *
4 * Copyright (C) Linus Torvalds, 2005
5 */
6#include "cache.h"
b2141fc1 7#include "config.h"
a8be83fe 8#include "commit.h"
960bba0d 9#include "refs.h"
c1babb1d 10#include "quote.h"
895f10c3 11#include "builtin.h"
21d47835 12#include "parse-options.h"
9dc01bf0
JH
13#include "diff.h"
14#include "revision.h"
a76295da 15#include "split-index.h"
bf0231c6 16#include "submodule.h"
64043556 17#include "commit-reach.h"
a8be83fe 18
4866ccf0
JH
19#define DO_REVS 1
20#define DO_NOREV 2
21#define DO_FLAGS 4
22#define DO_NONFLAGS 8
23static int filter = ~0;
24
96f1e58f 25static const char *def;
023d66ed 26
042a4ed7
LT
27#define NORMAL 0
28#define REVERSED 1
29static int show_type = NORMAL;
a6d97d49
JH
30
31#define SHOW_SYMBOLIC_ASIS 1
32#define SHOW_SYMBOLIC_FULL 2
96f1e58f
DR
33static int symbolic;
34static int abbrev;
a45d3469
BW
35static int abbrev_ref;
36static int abbrev_ref_strict;
96f1e58f 37static int output_sq;
4866ccf0 38
f8c87212 39static int stuck_long;
9dc01bf0 40static struct string_list *ref_excludes;
f8c87212 41
921d865e
LT
42/*
43 * Some arguments are relevant "revision" arguments,
44 * others are about output format or other details.
45 * This sorts it all out.
46 */
47static int is_rev_argument(const char *arg)
48{
49 static const char *rev_args[] = {
e091eb93 50 "--all",
4866ccf0 51 "--bisect",
5a83f3be 52 "--dense",
b09fe971 53 "--branches=",
a62be77f 54 "--branches",
4866ccf0 55 "--header",
cc243c3c 56 "--ignore-missing",
921d865e 57 "--max-age=",
4866ccf0 58 "--max-count=",
4866ccf0 59 "--min-age=",
5ccfb758 60 "--no-merges",
ad5aeede
MG
61 "--min-parents=",
62 "--no-min-parents",
63 "--max-parents=",
64 "--no-max-parents",
4866ccf0 65 "--objects",
c6496575 66 "--objects-edge",
4866ccf0
JH
67 "--parents",
68 "--pretty",
b09fe971 69 "--remotes=",
a62be77f 70 "--remotes",
d08bae7e 71 "--glob=",
5a83f3be 72 "--sparse",
b09fe971 73 "--tags=",
a62be77f 74 "--tags",
4866ccf0 75 "--topo-order",
4c8725f1 76 "--date-order",
4866ccf0 77 "--unpacked",
921d865e
LT
78 NULL
79 };
80 const char **p = rev_args;
81
8233340c
EW
82 /* accept -<digit>, like traditional "head" */
83 if ((*arg == '-') && isdigit(arg[1]))
84 return 1;
85
921d865e
LT
86 for (;;) {
87 const char *str = *p++;
88 int len;
89 if (!str)
90 return 0;
91 len = strlen(str);
4866ccf0
JH
92 if (!strcmp(arg, str) ||
93 (str[len-1] == '=' && !strncmp(arg, str, len)))
921d865e
LT
94 return 1;
95 }
96}
97
4866ccf0 98/* Output argument as a string, either SQ or normal */
5bb2c65a
JH
99static void show(const char *arg)
100{
101 if (output_sq) {
102 int sq = '\'', ch;
103
104 putchar(sq);
105 while ((ch = *arg++)) {
106 if (ch == sq)
107 fputs("'\\'", stdout);
108 putchar(ch);
109 }
110 putchar(sq);
111 putchar(' ');
112 }
113 else
114 puts(arg);
115}
116
e00f3790
JS
117/* Like show(), but with a negation prefix according to type */
118static void show_with_type(int type, const char *arg)
119{
120 if (type != show_type)
121 putchar('^');
122 show(arg);
123}
124
4866ccf0 125/* Output a revision, only if filter allows it */
8bc095f7 126static void show_rev(int type, const struct object_id *oid, const char *name)
023d66ed 127{
4866ccf0 128 if (!(filter & DO_REVS))
023d66ed 129 return;
4866ccf0 130 def = NULL;
5bb2c65a 131
a45d3469
BW
132 if ((symbolic || abbrev_ref) && name) {
133 if (symbolic == SHOW_SYMBOLIC_FULL || abbrev_ref) {
8bc095f7 134 struct object_id discard;
a6d97d49
JH
135 char *full;
136
cca5fa64 137 switch (dwim_ref(name, strlen(name), &discard, &full)) {
a6d97d49
JH
138 case 0:
139 /*
140 * Not found -- not a ref. We could
141 * emit "name" here, but symbolic-full
142 * users are interested in finding the
143 * refs spelled in full, and they would
144 * need to filter non-refs if we did so.
145 */
146 break;
147 case 1: /* happy */
a45d3469
BW
148 if (abbrev_ref)
149 full = shorten_unambiguous_ref(full,
150 abbrev_ref_strict);
e00f3790 151 show_with_type(type, full);
a6d97d49
JH
152 break;
153 default: /* ambiguous */
154 error("refname '%s' is ambiguous", name);
155 break;
156 }
28b35632 157 free(full);
a6d97d49 158 } else {
e00f3790 159 show_with_type(type, name);
a6d97d49
JH
160 }
161 }
d5012508 162 else if (abbrev)
aab9583f 163 show_with_type(type, find_unique_abbrev(oid, abbrev));
30b96fce 164 else
8bc095f7 165 show_with_type(type, oid_to_hex(oid));
023d66ed
LT
166}
167
4866ccf0 168/* Output a flag, only if filter allows it. */
16cee38a 169static int show_flag(const char *arg)
023d66ed 170{
4866ccf0 171 if (!(filter & DO_FLAGS))
9523a4c2
LT
172 return 0;
173 if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) {
0360e99d 174 show(arg);
9523a4c2
LT
175 return 1;
176 }
177 return 0;
023d66ed
LT
178}
179
dfd1b749 180static int show_default(void)
023d66ed 181{
16cee38a 182 const char *s = def;
023d66ed
LT
183
184 if (s) {
8bc095f7 185 struct object_id oid;
023d66ed
LT
186
187 def = NULL;
8bc095f7 188 if (!get_oid(s, &oid)) {
189 show_rev(NORMAL, &oid, s);
dfd1b749 190 return 1;
023d66ed 191 }
023d66ed 192 }
dfd1b749 193 return 0;
023d66ed
LT
194}
195
e23b0368 196static int show_reference(const char *refname, const struct object_id *oid, int flag, void *cb_data)
960bba0d 197{
9dc01bf0
JH
198 if (ref_excluded(ref_excludes, refname))
199 return 0;
8bc095f7 200 show_rev(NORMAL, oid, refname);
960bba0d
LT
201 return 0;
202}
203
e23b0368 204static int anti_reference(const char *refname, const struct object_id *oid, int flag, void *cb_data)
ad3f9a71 205{
8bc095f7 206 show_rev(REVERSED, oid, refname);
ad3f9a71
LT
207 return 0;
208}
209
1b7ba794 210static int show_abbrev(const struct object_id *oid, void *cb_data)
957d7406 211{
8bc095f7 212 show_rev(NORMAL, oid, NULL);
957d7406
JH
213 return 0;
214}
215
c1babb1d
LT
216static void show_datestring(const char *flag, const char *datestr)
217{
5b1ef2ce 218 char *buffer;
c1babb1d
LT
219
220 /* date handling requires both flags and revs */
221 if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
222 return;
cb71f8bd 223 buffer = xstrfmt("%s%"PRItime, flag, approxidate(datestr));
c1babb1d 224 show(buffer);
5b1ef2ce 225 free(buffer);
c1babb1d
LT
226}
227
12b9d327 228static int show_file(const char *arg, int output_prefix)
7a3dd472 229{
7b34c2fa 230 show_default();
9ad0a933 231 if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
12b9d327
JK
232 if (output_prefix) {
233 const char *prefix = startup_info->prefix;
e4da43b1
JK
234 char *fname = prefix_filename(prefix, arg);
235 show(fname);
236 free(fname);
12b9d327
JK
237 } else
238 show(arg);
9ad0a933
LT
239 return 1;
240 }
241 return 0;
7a3dd472
LT
242}
243
b7d936b2 244static int try_difference(const char *arg)
3dd4e732
SB
245{
246 char *dotdot;
ae90bdce
BW
247 struct object_id start_oid;
248 struct object_id end_oid;
249 const char *end;
250 const char *start;
3dd4e732 251 int symmetric;
003c84f6 252 static const char head_by_default[] = "HEAD";
3dd4e732
SB
253
254 if (!(dotdot = strstr(arg, "..")))
255 return 0;
ae90bdce
BW
256 end = dotdot + 2;
257 start = arg;
258 symmetric = (*end == '.');
3dd4e732
SB
259
260 *dotdot = 0;
ae90bdce 261 end += symmetric;
3dd4e732 262
ae90bdce
BW
263 if (!*end)
264 end = head_by_default;
3dd4e732 265 if (dotdot == arg)
ae90bdce 266 start = head_by_default;
003c84f6 267
ae90bdce 268 if (start == head_by_default && end == head_by_default &&
003c84f6
JH
269 !symmetric) {
270 /*
271 * Just ".."? That is not a range but the
272 * pathspec for the parent directory.
273 */
274 *dotdot = '.';
275 return 0;
276 }
277
ae90bdce
BW
278 if (!get_oid_committish(start, &start_oid) && !get_oid_committish(end, &end_oid)) {
279 show_rev(NORMAL, &end_oid, end);
280 show_rev(symmetric ? NORMAL : REVERSED, &start_oid, start);
3dd4e732
SB
281 if (symmetric) {
282 struct commit_list *exclude;
283 struct commit *a, *b;
2122f675
SB
284 a = lookup_commit_reference(the_repository, &start_oid);
285 b = lookup_commit_reference(the_repository, &end_oid);
0ed556d3
EN
286 if (!a || !b) {
287 *dotdot = '.';
288 return 0;
289 }
2ce406cc 290 exclude = get_merge_bases(a, b);
3dd4e732 291 while (exclude) {
e510ab89 292 struct commit *commit = pop_commit(&exclude);
8bc095f7 293 show_rev(REVERSED, &commit->object.oid, NULL);
3dd4e732
SB
294 }
295 }
62f162f8 296 *dotdot = '.';
3dd4e732
SB
297 return 1;
298 }
299 *dotdot = '.';
300 return 0;
301}
302
2122f8b9
BS
303static int try_parent_shorthands(const char *arg)
304{
305 char *dotdot;
8bc095f7 306 struct object_id oid;
2122f8b9
BS
307 struct commit *commit;
308 struct commit_list *parents;
8779351d
VN
309 int parent_number;
310 int include_rev = 0;
311 int include_parents = 0;
312 int exclude_parent = 0;
313
314 if ((dotdot = strstr(arg, "^!"))) {
315 include_rev = 1;
316 if (dotdot[2])
317 return 0;
318 } else if ((dotdot = strstr(arg, "^@"))) {
319 include_parents = 1;
320 if (dotdot[2])
321 return 0;
322 } else if ((dotdot = strstr(arg, "^-"))) {
323 include_rev = 1;
324 exclude_parent = 1;
325
326 if (dotdot[2]) {
327 char *end;
328 exclude_parent = strtoul(dotdot + 2, &end, 10);
329 if (*end != '\0' || !exclude_parent)
330 return 0;
331 }
332 } else
2122f8b9
BS
333 return 0;
334
335 *dotdot = 0;
0ed556d3 336 if (get_oid_committish(arg, &oid) ||
2122f675 337 !(commit = lookup_commit_reference(the_repository, &oid))) {
62f162f8 338 *dotdot = '^';
2122f8b9 339 return 0;
62f162f8 340 }
2122f8b9 341
8779351d
VN
342 if (exclude_parent &&
343 exclude_parent > commit_list_count(commit->parents)) {
344 *dotdot = '^';
345 return 0;
346 }
347
348 if (include_rev)
8bc095f7 349 show_rev(NORMAL, &oid, arg);
8779351d
VN
350 for (parents = commit->parents, parent_number = 1;
351 parents;
352 parents = parents->next, parent_number++) {
a2e7b04c
JK
353 char *name = NULL;
354
8779351d
VN
355 if (exclude_parent && parent_number != exclude_parent)
356 continue;
357
a2e7b04c
JK
358 if (symbolic)
359 name = xstrfmt("%s^%d", arg, parent_number);
8779351d 360 show_rev(include_parents ? NORMAL : REVERSED,
8bc095f7 361 &parents->item->object.oid, name);
a2e7b04c 362 free(name);
8779351d 363 }
2122f8b9 364
62f162f8 365 *dotdot = '^';
2122f8b9
BS
366 return 1;
367}
368
21d47835
PH
369static int parseopt_dump(const struct option *o, const char *arg, int unset)
370{
371 struct strbuf *parsed = o->value;
372 if (unset)
373 strbuf_addf(parsed, " --no-%s", o->long_name);
f8c87212 374 else if (o->short_name && (o->long_name == NULL || !stuck_long))
21d47835
PH
375 strbuf_addf(parsed, " -%c", o->short_name);
376 else
377 strbuf_addf(parsed, " --%s", o->long_name);
378 if (arg) {
f8c87212
NV
379 if (!stuck_long)
380 strbuf_addch(parsed, ' ');
381 else if (o->long_name)
382 strbuf_addch(parsed, '=');
21d47835
PH
383 sq_quote_buf(parsed, arg);
384 }
385 return 0;
386}
387
388static const char *skipspaces(const char *s)
389{
390 while (isspace(*s))
391 s++;
392 return s;
393}
394
33e75122
BC
395static char *findspace(const char *s)
396{
397 for (; *s; s++)
398 if (isspace(*s))
399 return (char*)s;
400 return NULL;
401}
402
21d47835
PH
403static int cmd_parseopt(int argc, const char **argv, const char *prefix)
404{
6e0800ef 405 static int keep_dashdash = 0, stop_at_non_option = 0;
21d47835 406 static char const * const parseopt_usage[] = {
9c9b4f2f 407 N_("git rev-parse --parseopt [<options>] -- [<args>...]"),
21d47835
PH
408 NULL
409 };
410 static struct option parseopt_opts[] = {
d5d09d47 411 OPT_BOOL(0, "keep-dashdash", &keep_dashdash,
2c7c184c 412 N_("keep the `--` passed as an arg")),
d5d09d47 413 OPT_BOOL(0, "stop-at-non-option", &stop_at_non_option,
2c7c184c
NTND
414 N_("stop parsing after the "
415 "first non-option argument")),
f8c87212
NV
416 OPT_BOOL(0, "stuck-long", &stuck_long,
417 N_("output in stuck long form")),
21d47835
PH
418 OPT_END(),
419 };
2d893dff 420 static const char * const flag_chars = "*=?!";
21d47835 421
f285a2d7 422 struct strbuf sb = STRBUF_INIT, parsed = STRBUF_INIT;
21d47835
PH
423 const char **usage = NULL;
424 struct option *opts = NULL;
425 int onb = 0, osz = 0, unb = 0, usz = 0;
426
21d47835 427 strbuf_addstr(&parsed, "set --");
37782920 428 argc = parse_options(argc, argv, prefix, parseopt_opts, parseopt_usage,
21d47835
PH
429 PARSE_OPT_KEEP_DASHDASH);
430 if (argc < 1 || strcmp(argv[0], "--"))
431 usage_with_options(parseopt_usage, parseopt_opts);
432
21d47835
PH
433 /* get the usage up to the first line with a -- on it */
434 for (;;) {
72e37b6a 435 if (strbuf_getline(&sb, stdin) == EOF)
21d47835
PH
436 die("premature end of input");
437 ALLOC_GROW(usage, unb + 1, usz);
438 if (!strcmp("--", sb.buf)) {
439 if (unb < 1)
440 die("no usage string given before the `--' separator");
441 usage[unb] = NULL;
442 break;
443 }
444 usage[unb++] = strbuf_detach(&sb, NULL);
445 }
446
9bab5b60 447 /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */
72e37b6a 448 while (strbuf_getline(&sb, stdin) != EOF) {
21d47835 449 const char *s;
28a8d0f7 450 char *help;
21d47835
PH
451 struct option *o;
452
453 if (!sb.len)
454 continue;
455
456 ALLOC_GROW(opts, onb + 1, osz);
457 memset(opts + onb, 0, sizeof(opts[onb]));
458
459 o = &opts[onb++];
33e75122
BC
460 help = findspace(sb.buf);
461 if (!help || sb.buf == help) {
21d47835 462 o->type = OPTION_GROUP;
e1033436 463 o->help = xstrdup(skipspaces(sb.buf));
21d47835
PH
464 continue;
465 }
466
28a8d0f7
BC
467 *help = '\0';
468
21d47835 469 o->type = OPTION_CALLBACK;
28a8d0f7 470 o->help = xstrdup(skipspaces(help+1));
21d47835 471 o->value = &parsed;
ff962a3f 472 o->flags = PARSE_OPT_NOARG;
21d47835 473 o->callback = &parseopt_dump;
9bab5b60 474
2d893dff
IB
475 /* name(s) */
476 s = strpbrk(sb.buf, flag_chars);
477 if (s == NULL)
478 s = help;
479
480 if (s - sb.buf == 1) /* short option only */
481 o->short_name = *sb.buf;
482 else if (sb.buf[1] != ',') /* long option only */
483 o->long_name = xmemdupz(sb.buf, s - sb.buf);
484 else {
485 o->short_name = *sb.buf;
486 o->long_name = xmemdupz(sb.buf + 2, s - sb.buf - 2);
487 }
488
489 /* flags */
490 while (s < help) {
491 switch (*s++) {
ff962a3f
PH
492 case '=':
493 o->flags &= ~PARSE_OPT_NOARG;
2d893dff 494 continue;
ff962a3f
PH
495 case '?':
496 o->flags &= ~PARSE_OPT_NOARG;
497 o->flags |= PARSE_OPT_OPTARG;
2d893dff 498 continue;
ff962a3f
PH
499 case '!':
500 o->flags |= PARSE_OPT_NONEG;
2d893dff 501 continue;
ff962a3f
PH
502 case '*':
503 o->flags |= PARSE_OPT_HIDDEN;
2d893dff 504 continue;
ff962a3f 505 }
2d893dff
IB
506 s--;
507 break;
21d47835
PH
508 }
509
2d893dff
IB
510 if (s < help)
511 o->argh = xmemdupz(s, help - s);
21d47835
PH
512 }
513 strbuf_release(&sb);
514
515 /* put an OPT_END() */
516 ALLOC_GROW(opts, onb + 1, osz);
517 memset(opts + onb, 0, sizeof(opts[onb]));
37782920 518 argc = parse_options(argc, argv, prefix, opts, usage,
29981380 519 (keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0) |
fcd91f8d 520 (stop_at_non_option ? PARSE_OPT_STOP_AT_NON_OPTION : 0) |
47e9cd28 521 PARSE_OPT_SHELL_EVAL);
21d47835 522
02962d36 523 strbuf_addstr(&parsed, " --");
e35f11c2 524 sq_quote_argv(&parsed, argv);
21d47835
PH
525 puts(parsed.buf);
526 return 0;
527}
528
50325377
CC
529static int cmd_sq_quote(int argc, const char **argv)
530{
531 struct strbuf buf = STRBUF_INIT;
532
533 if (argc)
e35f11c2 534 sq_quote_argv(&buf, argv);
50325377
CC
535 printf("%s\n", buf.buf);
536 strbuf_release(&buf);
537
538 return 0;
539}
540
b1b35969
CC
541static void die_no_single_rev(int quiet)
542{
543 if (quiet)
544 exit(1);
545 else
546 die("Needed a single revision");
547}
548
7006b5be 549static const char builtin_rev_parse_usage[] =
9c9b4f2f 550N_("git rev-parse --parseopt [<options>] -- [<args>...]\n"
2c7c184c 551 " or: git rev-parse --sq-quote [<arg>...]\n"
9c9b4f2f 552 " or: git rev-parse [<options>] [<arg>...]\n"
2c7c184c
NTND
553 "\n"
554 "Run \"git rev-parse --parseopt -h\" for more information on the first usage.");
7006b5be 555
9d16ca65
JK
556/*
557 * Parse "opt" or "opt=<value>", setting value respectively to either
558 * NULL or the string after "=".
559 */
560static int opt_with_value(const char *arg, const char *opt, const char **value)
561{
562 if (skip_prefix(arg, opt, &arg)) {
563 if (!*arg) {
564 *value = NULL;
565 return 1;
566 }
567 if (*arg++ == '=') {
568 *value = arg;
569 return 1;
570 }
571 }
572 return 0;
573}
574
ffddfc63
JK
575static void handle_ref_opt(const char *pattern, const char *prefix)
576{
577 if (pattern)
578 for_each_glob_ref_in(show_reference, pattern, prefix, NULL);
579 else
580 for_each_ref_in(prefix, show_reference, NULL);
581 clear_ref_exclusion(&ref_excludes);
582}
583
a633fca0 584int cmd_rev_parse(int argc, const char **argv, const char *prefix)
178cb243 585{
dfd1b749 586 int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
fc7d47f0 587 int did_repo_setup = 0;
14185673 588 int has_dashdash = 0;
12b9d327 589 int output_prefix = 0;
8bc095f7 590 struct object_id oid;
c41a87dd 591 unsigned int flags = 0;
dfd1b749 592 const char *name = NULL;
c41a87dd 593 struct object_context unused;
098aa867 594 struct strbuf buf = STRBUF_INIT;
a62be77f 595
21d47835
PH
596 if (argc > 1 && !strcmp("--parseopt", argv[1]))
597 return cmd_parseopt(argc - 1, argv + 1, prefix);
598
50325377
CC
599 if (argc > 1 && !strcmp("--sq-quote", argv[1]))
600 return cmd_sq_quote(argc - 2, argv + 2);
601
7006b5be
JN
602 if (argc > 1 && !strcmp("-h", argv[1]))
603 usage(builtin_rev_parse_usage);
604
14185673
JK
605 for (i = 1; i < argc; i++) {
606 if (!strcmp(argv[i], "--")) {
607 has_dashdash = 1;
608 break;
609 }
610 }
611
fc7d47f0
JK
612 /* No options; just report on whether we're in a git repo or not. */
613 if (argc == 1) {
614 setup_git_directory();
615 git_config(git_default_config, NULL);
616 return 0;
617 }
618
178cb243 619 for (i = 1; i < argc; i++) {
16cee38a 620 const char *arg = argv[i];
fb18a2ed 621
fc7d47f0
JK
622 if (!strcmp(arg, "--local-env-vars")) {
623 int i;
624 for (i = 0; local_repo_env[i]; i++)
625 printf("%s\n", local_repo_env[i]);
626 continue;
627 }
628 if (!strcmp(arg, "--resolve-git-dir")) {
629 const char *gitdir = argv[++i];
630 if (!gitdir)
631 die("--resolve-git-dir requires an argument");
632 gitdir = resolve_gitdir(gitdir);
633 if (!gitdir)
634 die("not a gitdir '%s'", argv[i]);
635 puts(gitdir);
636 continue;
637 }
638
639 /* The rest of the options require a git repository. */
640 if (!did_repo_setup) {
641 prefix = setup_git_directory();
642 git_config(git_default_config, NULL);
643 did_repo_setup = 1;
644 }
645
557bd833
NTND
646 if (!strcmp(arg, "--git-path")) {
647 if (!argv[i + 1])
648 die("--git-path requires an argument");
098aa867
JS
649 strbuf_reset(&buf);
650 puts(relative_path(git_path("%s", argv[i + 1]),
651 prefix, &buf));
557bd833
NTND
652 i++;
653 continue;
654 }
178cb243 655 if (as_is) {
12b9d327 656 if (show_file(arg, output_prefix) && as_is < 2)
023e37c3 657 verify_filename(prefix, arg, 0);
178cb243
LT
658 continue;
659 }
3af06987
EW
660 if (!strcmp(arg,"-n")) {
661 if (++i >= argc)
662 die("-n requires an argument");
663 if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
664 show(arg);
665 show(argv[i]);
666 }
667 continue;
668 }
59556548 669 if (starts_with(arg, "-n")) {
3af06987
EW
670 if ((filter & DO_FLAGS) && (filter & DO_REVS))
671 show(arg);
672 continue;
673 }
674
178cb243
LT
675 if (*arg == '-') {
676 if (!strcmp(arg, "--")) {
fb18a2ed 677 as_is = 2;
a08b6505
LT
678 /* Pass on the "--" if we show anything but files.. */
679 if (filter & (DO_FLAGS | DO_REVS))
12b9d327 680 show_file(arg, 0);
4866ccf0 681 continue;
178cb243
LT
682 }
683 if (!strcmp(arg, "--default")) {
a43219f2
DS
684 def = argv[++i];
685 if (!def)
686 die("--default requires an argument");
178cb243
LT
687 continue;
688 }
12b9d327 689 if (!strcmp(arg, "--prefix")) {
a43219f2
DS
690 prefix = argv[++i];
691 if (!prefix)
692 die("--prefix requires an argument");
12b9d327
JK
693 startup_info->prefix = prefix;
694 output_prefix = 1;
12b9d327
JK
695 continue;
696 }
8ebb0184 697 if (!strcmp(arg, "--revs-only")) {
4866ccf0 698 filter &= ~DO_NOREV;
8ebb0184
LT
699 continue;
700 }
701 if (!strcmp(arg, "--no-revs")) {
4866ccf0 702 filter &= ~DO_REVS;
8ebb0184
LT
703 continue;
704 }
f79b65aa 705 if (!strcmp(arg, "--flags")) {
4866ccf0 706 filter &= ~DO_NONFLAGS;
f79b65aa
LT
707 continue;
708 }
709 if (!strcmp(arg, "--no-flags")) {
4866ccf0 710 filter &= ~DO_FLAGS;
f79b65aa
LT
711 continue;
712 }
023d66ed 713 if (!strcmp(arg, "--verify")) {
4866ccf0
JH
714 filter &= ~(DO_FLAGS|DO_NOREV);
715 verify = 1;
023d66ed 716 continue;
921d865e 717 }
b1b35969
CC
718 if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) {
719 quiet = 1;
321c89bf 720 flags |= GET_OID_QUIETLY;
b1b35969
CC
721 continue;
722 }
9d16ca65 723 if (opt_with_value(arg, "--short", &arg)) {
d5012508
JH
724 filter &= ~(DO_FLAGS|DO_NOREV);
725 verify = 1;
726 abbrev = DEFAULT_ABBREV;
9d16ca65 727 if (!arg)
7b5b7721 728 continue;
9d16ca65 729 abbrev = strtoul(arg, NULL, 10);
1dc4fb84
JH
730 if (abbrev < MINIMUM_ABBREV)
731 abbrev = MINIMUM_ABBREV;
732 else if (40 <= abbrev)
733 abbrev = 40;
d5012508
JH
734 continue;
735 }
5bb2c65a
JH
736 if (!strcmp(arg, "--sq")) {
737 output_sq = 1;
738 continue;
739 }
042a4ed7
LT
740 if (!strcmp(arg, "--not")) {
741 show_type ^= REVERSED;
742 continue;
743 }
30b96fce 744 if (!strcmp(arg, "--symbolic")) {
a6d97d49
JH
745 symbolic = SHOW_SYMBOLIC_ASIS;
746 continue;
747 }
748 if (!strcmp(arg, "--symbolic-full-name")) {
749 symbolic = SHOW_SYMBOLIC_FULL;
30b96fce
JH
750 continue;
751 }
9d16ca65 752 if (opt_with_value(arg, "--abbrev-ref", &arg)) {
a45d3469
BW
753 abbrev_ref = 1;
754 abbrev_ref_strict = warn_ambiguous_refs;
9d16ca65
JK
755 if (arg) {
756 if (!strcmp(arg, "strict"))
a45d3469 757 abbrev_ref_strict = 1;
9d16ca65 758 else if (!strcmp(arg, "loose"))
a45d3469
BW
759 abbrev_ref_strict = 0;
760 else
9d16ca65
JK
761 die("unknown mode for --abbrev-ref: %s",
762 arg);
a45d3469
BW
763 }
764 continue;
765 }
960bba0d 766 if (!strcmp(arg, "--all")) {
e23b0368 767 for_each_ref(show_reference, NULL);
52210480 768 clear_ref_exclusion(&ref_excludes);
960bba0d
LT
769 continue;
770 }
ef87cc79
JK
771 if (skip_prefix(arg, "--disambiguate=", &arg)) {
772 for_each_abbrev(arg, show_abbrev, NULL);
957d7406
JH
773 continue;
774 }
ad3f9a71 775 if (!strcmp(arg, "--bisect")) {
1d0538e4
JK
776 for_each_fullref_in("refs/bisect/bad", show_reference, NULL, 0);
777 for_each_fullref_in("refs/bisect/good", anti_reference, NULL, 0);
ad3f9a71
LT
778 continue;
779 }
ffddfc63
JK
780 if (opt_with_value(arg, "--branches", &arg)) {
781 handle_ref_opt(arg, "refs/heads/");
a62be77f
SE
782 continue;
783 }
ffddfc63
JK
784 if (opt_with_value(arg, "--tags", &arg)) {
785 handle_ref_opt(arg, "refs/tags/");
d08bae7e
IL
786 continue;
787 }
ef87cc79 788 if (skip_prefix(arg, "--glob=", &arg)) {
ffddfc63 789 handle_ref_opt(arg, NULL);
b09fe971
IL
790 continue;
791 }
ffddfc63
JK
792 if (opt_with_value(arg, "--remotes", &arg)) {
793 handle_ref_opt(arg, "refs/remotes/");
9dc01bf0
JH
794 continue;
795 }
ef87cc79
JK
796 if (skip_prefix(arg, "--exclude=", &arg)) {
797 add_ref_exclusion(&ref_excludes, arg);
a62be77f
SE
798 continue;
799 }
7cceca5c
SD
800 if (!strcmp(arg, "--show-toplevel")) {
801 const char *work_tree = get_git_work_tree();
802 if (work_tree)
803 puts(work_tree);
804 continue;
805 }
bf0231c6
SB
806 if (!strcmp(arg, "--show-superproject-working-tree")) {
807 const char *superproject = get_superproject_working_tree();
808 if (superproject)
809 puts(superproject);
810 continue;
811 }
d288a700 812 if (!strcmp(arg, "--show-prefix")) {
4866ccf0
JH
813 if (prefix)
814 puts(prefix);
658219f1
RL
815 else
816 putchar('\n');
d288a700
LT
817 continue;
818 }
5f94c730
JH
819 if (!strcmp(arg, "--show-cdup")) {
820 const char *pfx = prefix;
e90fdc39
JS
821 if (!is_inside_work_tree()) {
822 const char *work_tree =
823 get_git_work_tree();
824 if (work_tree)
825 printf("%s\n", work_tree);
826 continue;
827 }
5f94c730
JH
828 while (pfx) {
829 pfx = strchr(pfx, '/');
830 if (pfx) {
831 pfx++;
832 printf("../");
833 }
834 }
835 putchar('\n');
836 continue;
837 }
a2f5a876
SG
838 if (!strcmp(arg, "--git-dir") ||
839 !strcmp(arg, "--absolute-git-dir")) {
a8783eeb 840 const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
56b9f6e7 841 char *cwd;
d06f15d9 842 int len;
a2f5a876
SG
843 if (arg[2] == 'g') { /* --git-dir */
844 if (gitdir) {
845 puts(gitdir);
846 continue;
847 }
848 if (!prefix) {
849 puts(".git");
850 continue;
851 }
852 } else { /* --absolute-git-dir */
853 if (!gitdir && !prefix)
854 gitdir = ".git";
855 if (gitdir) {
856 puts(real_path(gitdir));
857 continue;
858 }
a8783eeb 859 }
56b9f6e7 860 cwd = xgetcwd();
d06f15d9
NTND
861 len = strlen(cwd);
862 printf("%s%s.git\n", cwd, len && cwd[len-1] != '/' ? "/" : "");
56b9f6e7 863 free(cwd);
a8783eeb
LT
864 continue;
865 }
31e26ebc 866 if (!strcmp(arg, "--git-common-dir")) {
098aa867
JS
867 strbuf_reset(&buf);
868 puts(relative_path(get_git_common_dir(),
869 prefix, &buf));
31e26ebc
NTND
870 continue;
871 }
6d9ba67b
JS
872 if (!strcmp(arg, "--is-inside-git-dir")) {
873 printf("%s\n", is_inside_git_dir() ? "true"
874 : "false");
875 continue;
876 }
892c41b9
ML
877 if (!strcmp(arg, "--is-inside-work-tree")) {
878 printf("%s\n", is_inside_work_tree() ? "true"
879 : "false");
880 continue;
881 }
493c774e
ML
882 if (!strcmp(arg, "--is-bare-repository")) {
883 printf("%s\n", is_bare_repository() ? "true"
884 : "false");
885 continue;
886 }
417abfde 887 if (!strcmp(arg, "--is-shallow-repository")) {
c8813487
SB
888 printf("%s\n",
889 is_repository_shallow(the_repository) ? "true"
417abfde
ØW
890 : "false");
891 continue;
892 }
a76295da
NTND
893 if (!strcmp(arg, "--shared-index-path")) {
894 if (read_cache() < 0)
895 die(_("Could not read the index"));
896 if (the_index.split_index) {
2182abd9 897 const struct object_id *oid = &the_index.split_index->base_oid;
898 const char *path = git_path("sharedindex.%s", oid_to_hex(oid));
098aa867
JS
899 strbuf_reset(&buf);
900 puts(relative_path(path, prefix, &buf));
a76295da
NTND
901 }
902 continue;
903 }
ef87cc79
JK
904 if (skip_prefix(arg, "--since=", &arg)) {
905 show_datestring("--max-age=", arg);
c1babb1d
LT
906 continue;
907 }
ef87cc79
JK
908 if (skip_prefix(arg, "--after=", &arg)) {
909 show_datestring("--max-age=", arg);
c1babb1d
LT
910 continue;
911 }
ef87cc79
JK
912 if (skip_prefix(arg, "--before=", &arg)) {
913 show_datestring("--min-age=", arg);
c1babb1d
LT
914 continue;
915 }
ef87cc79
JK
916 if (skip_prefix(arg, "--until=", &arg)) {
917 show_datestring("--min-age=", arg);
c1babb1d
LT
918 continue;
919 }
9523a4c2 920 if (show_flag(arg) && verify)
b1b35969 921 die_no_single_rev(quiet);
178cb243
LT
922 continue;
923 }
4866ccf0
JH
924
925 /* Not a flag argument */
3dd4e732
SB
926 if (try_difference(arg))
927 continue;
2122f8b9
BS
928 if (try_parent_shorthands(arg))
929 continue;
dfd1b749
CC
930 name = arg;
931 type = NORMAL;
932 if (*arg == '^') {
933 name++;
934 type = REVERSED;
800644c5 935 }
3a7a698e
NTND
936 if (!get_oid_with_context(the_repository, name,
937 flags, &oid, &unused)) {
dfd1b749
CC
938 if (verify)
939 revs_count++;
940 else
8bc095f7 941 show_rev(type, &oid, name);
800644c5
LT
942 continue;
943 }
75ecfce3
CC
944 if (verify)
945 die_no_single_rev(quiet);
14185673
JK
946 if (has_dashdash)
947 die("bad revision '%s'", arg);
9ad0a933 948 as_is = 1;
12b9d327 949 if (!show_file(arg, output_prefix))
9ad0a933 950 continue;
023e37c3 951 verify_filename(prefix, arg, 1);
023d66ed 952 }
098aa867 953 strbuf_release(&buf);
dfd1b749
CC
954 if (verify) {
955 if (revs_count == 1) {
8bc095f7 956 show_rev(type, &oid, name);
dfd1b749
CC
957 return 0;
958 } else if (revs_count == 0 && show_default())
959 return 0;
b1b35969 960 die_no_single_rev(quiet);
dfd1b749
CC
961 } else
962 show_default();
178cb243
LT
963 return 0;
964}