each_ref_fn: change to take an object_id parameter
[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"
a8be83fe 7#include "commit.h"
960bba0d 8#include "refs.h"
c1babb1d 9#include "quote.h"
895f10c3 10#include "builtin.h"
21d47835 11#include "parse-options.h"
9dc01bf0
JH
12#include "diff.h"
13#include "revision.h"
a76295da 14#include "split-index.h"
a8be83fe 15
4866ccf0
JH
16#define DO_REVS 1
17#define DO_NOREV 2
18#define DO_FLAGS 4
19#define DO_NONFLAGS 8
20static int filter = ~0;
21
96f1e58f 22static const char *def;
023d66ed 23
042a4ed7
LT
24#define NORMAL 0
25#define REVERSED 1
26static int show_type = NORMAL;
a6d97d49
JH
27
28#define SHOW_SYMBOLIC_ASIS 1
29#define SHOW_SYMBOLIC_FULL 2
96f1e58f
DR
30static int symbolic;
31static int abbrev;
a45d3469
BW
32static int abbrev_ref;
33static int abbrev_ref_strict;
96f1e58f 34static int output_sq;
4866ccf0 35
f8c87212 36static int stuck_long;
9dc01bf0 37static struct string_list *ref_excludes;
f8c87212 38
921d865e
LT
39/*
40 * Some arguments are relevant "revision" arguments,
41 * others are about output format or other details.
42 * This sorts it all out.
43 */
44static int is_rev_argument(const char *arg)
45{
46 static const char *rev_args[] = {
e091eb93 47 "--all",
4866ccf0 48 "--bisect",
5a83f3be 49 "--dense",
b09fe971 50 "--branches=",
a62be77f 51 "--branches",
4866ccf0 52 "--header",
cc243c3c 53 "--ignore-missing",
921d865e 54 "--max-age=",
4866ccf0 55 "--max-count=",
4866ccf0 56 "--min-age=",
5ccfb758 57 "--no-merges",
ad5aeede
MG
58 "--min-parents=",
59 "--no-min-parents",
60 "--max-parents=",
61 "--no-max-parents",
4866ccf0 62 "--objects",
c6496575 63 "--objects-edge",
4866ccf0
JH
64 "--parents",
65 "--pretty",
b09fe971 66 "--remotes=",
a62be77f 67 "--remotes",
d08bae7e 68 "--glob=",
5a83f3be 69 "--sparse",
b09fe971 70 "--tags=",
a62be77f 71 "--tags",
4866ccf0 72 "--topo-order",
4c8725f1 73 "--date-order",
4866ccf0 74 "--unpacked",
921d865e
LT
75 NULL
76 };
77 const char **p = rev_args;
78
8233340c
EW
79 /* accept -<digit>, like traditional "head" */
80 if ((*arg == '-') && isdigit(arg[1]))
81 return 1;
82
921d865e
LT
83 for (;;) {
84 const char *str = *p++;
85 int len;
86 if (!str)
87 return 0;
88 len = strlen(str);
4866ccf0
JH
89 if (!strcmp(arg, str) ||
90 (str[len-1] == '=' && !strncmp(arg, str, len)))
921d865e
LT
91 return 1;
92 }
93}
94
4866ccf0 95/* Output argument as a string, either SQ or normal */
5bb2c65a
JH
96static void show(const char *arg)
97{
98 if (output_sq) {
99 int sq = '\'', ch;
100
101 putchar(sq);
102 while ((ch = *arg++)) {
103 if (ch == sq)
104 fputs("'\\'", stdout);
105 putchar(ch);
106 }
107 putchar(sq);
108 putchar(' ');
109 }
110 else
111 puts(arg);
112}
113
e00f3790
JS
114/* Like show(), but with a negation prefix according to type */
115static void show_with_type(int type, const char *arg)
116{
117 if (type != show_type)
118 putchar('^');
119 show(arg);
120}
121
4866ccf0 122/* Output a revision, only if filter allows it */
30b96fce 123static void show_rev(int type, const unsigned char *sha1, const char *name)
023d66ed 124{
4866ccf0 125 if (!(filter & DO_REVS))
023d66ed 126 return;
4866ccf0 127 def = NULL;
5bb2c65a 128
a45d3469
BW
129 if ((symbolic || abbrev_ref) && name) {
130 if (symbolic == SHOW_SYMBOLIC_FULL || abbrev_ref) {
a6d97d49
JH
131 unsigned char discard[20];
132 char *full;
133
134 switch (dwim_ref(name, strlen(name), discard, &full)) {
135 case 0:
136 /*
137 * Not found -- not a ref. We could
138 * emit "name" here, but symbolic-full
139 * users are interested in finding the
140 * refs spelled in full, and they would
141 * need to filter non-refs if we did so.
142 */
143 break;
144 case 1: /* happy */
a45d3469
BW
145 if (abbrev_ref)
146 full = shorten_unambiguous_ref(full,
147 abbrev_ref_strict);
e00f3790 148 show_with_type(type, full);
a6d97d49
JH
149 break;
150 default: /* ambiguous */
151 error("refname '%s' is ambiguous", name);
152 break;
153 }
28b35632 154 free(full);
a6d97d49 155 } else {
e00f3790 156 show_with_type(type, name);
a6d97d49
JH
157 }
158 }
d5012508 159 else if (abbrev)
e00f3790 160 show_with_type(type, find_unique_abbrev(sha1, abbrev));
30b96fce 161 else
e00f3790 162 show_with_type(type, sha1_to_hex(sha1));
023d66ed
LT
163}
164
4866ccf0 165/* Output a flag, only if filter allows it. */
16cee38a 166static int show_flag(const char *arg)
023d66ed 167{
4866ccf0 168 if (!(filter & DO_FLAGS))
9523a4c2
LT
169 return 0;
170 if (filter & (is_rev_argument(arg) ? DO_REVS : DO_NOREV)) {
0360e99d 171 show(arg);
9523a4c2
LT
172 return 1;
173 }
174 return 0;
023d66ed
LT
175}
176
dfd1b749 177static int show_default(void)
023d66ed 178{
16cee38a 179 const char *s = def;
023d66ed
LT
180
181 if (s) {
182 unsigned char sha1[20];
183
184 def = NULL;
9938af6a 185 if (!get_sha1(s, sha1)) {
30b96fce 186 show_rev(NORMAL, sha1, s);
dfd1b749 187 return 1;
023d66ed 188 }
023d66ed 189 }
dfd1b749 190 return 0;
023d66ed
LT
191}
192
8da19775 193static int show_reference(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
960bba0d 194{
9dc01bf0
JH
195 if (ref_excluded(ref_excludes, refname))
196 return 0;
30b96fce 197 show_rev(NORMAL, sha1, refname);
960bba0d
LT
198 return 0;
199}
200
ad3f9a71
LT
201static int anti_reference(const char *refname, const unsigned char *sha1, int flag, void *cb_data)
202{
203 show_rev(REVERSED, sha1, refname);
204 return 0;
205}
206
957d7406
JH
207static int show_abbrev(const unsigned char *sha1, void *cb_data)
208{
209 show_rev(NORMAL, sha1, NULL);
210 return 0;
211}
212
c1babb1d
LT
213static void show_datestring(const char *flag, const char *datestr)
214{
c1babb1d 215 static char buffer[100];
c1babb1d
LT
216
217 /* date handling requires both flags and revs */
218 if ((filter & (DO_FLAGS | DO_REVS)) != (DO_FLAGS | DO_REVS))
219 return;
3c07b1d1 220 snprintf(buffer, sizeof(buffer), "%s%lu", flag, approxidate(datestr));
c1babb1d
LT
221 show(buffer);
222}
223
12b9d327 224static int show_file(const char *arg, int output_prefix)
7a3dd472 225{
7b34c2fa 226 show_default();
9ad0a933 227 if ((filter & (DO_NONFLAGS|DO_NOREV)) == (DO_NONFLAGS|DO_NOREV)) {
12b9d327
JK
228 if (output_prefix) {
229 const char *prefix = startup_info->prefix;
230 show(prefix_filename(prefix,
231 prefix ? strlen(prefix) : 0,
232 arg));
233 } else
234 show(arg);
9ad0a933
LT
235 return 1;
236 }
237 return 0;
7a3dd472
LT
238}
239
b7d936b2 240static int try_difference(const char *arg)
3dd4e732
SB
241{
242 char *dotdot;
243 unsigned char sha1[20];
244 unsigned char end[20];
245 const char *next;
246 const char *this;
247 int symmetric;
003c84f6 248 static const char head_by_default[] = "HEAD";
3dd4e732
SB
249
250 if (!(dotdot = strstr(arg, "..")))
251 return 0;
252 next = dotdot + 2;
253 this = arg;
254 symmetric = (*next == '.');
255
256 *dotdot = 0;
257 next += symmetric;
258
259 if (!*next)
003c84f6 260 next = head_by_default;
3dd4e732 261 if (dotdot == arg)
003c84f6
JH
262 this = head_by_default;
263
264 if (this == head_by_default && next == head_by_default &&
265 !symmetric) {
266 /*
267 * Just ".."? That is not a range but the
268 * pathspec for the parent directory.
269 */
270 *dotdot = '.';
271 return 0;
272 }
273
c036c4c5 274 if (!get_sha1_committish(this, sha1) && !get_sha1_committish(next, end)) {
3dd4e732
SB
275 show_rev(NORMAL, end, next);
276 show_rev(symmetric ? NORMAL : REVERSED, sha1, this);
277 if (symmetric) {
278 struct commit_list *exclude;
279 struct commit *a, *b;
280 a = lookup_commit_reference(sha1);
281 b = lookup_commit_reference(end);
2ce406cc 282 exclude = get_merge_bases(a, b);
3dd4e732
SB
283 while (exclude) {
284 struct commit_list *n = exclude->next;
285 show_rev(REVERSED,
286 exclude->item->object.sha1,NULL);
287 free(exclude);
288 exclude = n;
289 }
290 }
62f162f8 291 *dotdot = '.';
3dd4e732
SB
292 return 1;
293 }
294 *dotdot = '.';
295 return 0;
296}
297
2122f8b9
BS
298static int try_parent_shorthands(const char *arg)
299{
300 char *dotdot;
301 unsigned char sha1[20];
302 struct commit *commit;
303 struct commit_list *parents;
304 int parents_only;
305
306 if ((dotdot = strstr(arg, "^!")))
307 parents_only = 0;
308 else if ((dotdot = strstr(arg, "^@")))
309 parents_only = 1;
310
311 if (!dotdot || dotdot[2])
312 return 0;
313
314 *dotdot = 0;
62f162f8
JK
315 if (get_sha1_committish(arg, sha1)) {
316 *dotdot = '^';
2122f8b9 317 return 0;
62f162f8 318 }
2122f8b9
BS
319
320 if (!parents_only)
321 show_rev(NORMAL, sha1, arg);
322 commit = lookup_commit_reference(sha1);
323 for (parents = commit->parents; parents; parents = parents->next)
324 show_rev(parents_only ? NORMAL : REVERSED,
325 parents->item->object.sha1, arg);
326
62f162f8 327 *dotdot = '^';
2122f8b9
BS
328 return 1;
329}
330
21d47835
PH
331static int parseopt_dump(const struct option *o, const char *arg, int unset)
332{
333 struct strbuf *parsed = o->value;
334 if (unset)
335 strbuf_addf(parsed, " --no-%s", o->long_name);
f8c87212 336 else if (o->short_name && (o->long_name == NULL || !stuck_long))
21d47835
PH
337 strbuf_addf(parsed, " -%c", o->short_name);
338 else
339 strbuf_addf(parsed, " --%s", o->long_name);
340 if (arg) {
f8c87212
NV
341 if (!stuck_long)
342 strbuf_addch(parsed, ' ');
343 else if (o->long_name)
344 strbuf_addch(parsed, '=');
21d47835
PH
345 sq_quote_buf(parsed, arg);
346 }
347 return 0;
348}
349
350static const char *skipspaces(const char *s)
351{
352 while (isspace(*s))
353 s++;
354 return s;
355}
356
357static int cmd_parseopt(int argc, const char **argv, const char *prefix)
358{
6e0800ef 359 static int keep_dashdash = 0, stop_at_non_option = 0;
21d47835 360 static char const * const parseopt_usage[] = {
9c9b4f2f 361 N_("git rev-parse --parseopt [<options>] -- [<args>...]"),
21d47835
PH
362 NULL
363 };
364 static struct option parseopt_opts[] = {
d5d09d47 365 OPT_BOOL(0, "keep-dashdash", &keep_dashdash,
2c7c184c 366 N_("keep the `--` passed as an arg")),
d5d09d47 367 OPT_BOOL(0, "stop-at-non-option", &stop_at_non_option,
2c7c184c
NTND
368 N_("stop parsing after the "
369 "first non-option argument")),
f8c87212
NV
370 OPT_BOOL(0, "stuck-long", &stuck_long,
371 N_("output in stuck long form")),
21d47835
PH
372 OPT_END(),
373 };
374
f285a2d7 375 struct strbuf sb = STRBUF_INIT, parsed = STRBUF_INIT;
21d47835
PH
376 const char **usage = NULL;
377 struct option *opts = NULL;
378 int onb = 0, osz = 0, unb = 0, usz = 0;
379
21d47835 380 strbuf_addstr(&parsed, "set --");
37782920 381 argc = parse_options(argc, argv, prefix, parseopt_opts, parseopt_usage,
21d47835
PH
382 PARSE_OPT_KEEP_DASHDASH);
383 if (argc < 1 || strcmp(argv[0], "--"))
384 usage_with_options(parseopt_usage, parseopt_opts);
385
21d47835
PH
386 /* get the usage up to the first line with a -- on it */
387 for (;;) {
388 if (strbuf_getline(&sb, stdin, '\n') == EOF)
389 die("premature end of input");
390 ALLOC_GROW(usage, unb + 1, usz);
391 if (!strcmp("--", sb.buf)) {
392 if (unb < 1)
393 die("no usage string given before the `--' separator");
394 usage[unb] = NULL;
395 break;
396 }
397 usage[unb++] = strbuf_detach(&sb, NULL);
398 }
399
9bab5b60 400 /* parse: (<short>|<short>,<long>|<long>)[*=?!]*<arghint>? SP+ <help> */
21d47835
PH
401 while (strbuf_getline(&sb, stdin, '\n') != EOF) {
402 const char *s;
9bab5b60 403 const char *end;
21d47835
PH
404 struct option *o;
405
406 if (!sb.len)
407 continue;
408
409 ALLOC_GROW(opts, onb + 1, osz);
410 memset(opts + onb, 0, sizeof(opts[onb]));
411
412 o = &opts[onb++];
413 s = strchr(sb.buf, ' ');
414 if (!s || *sb.buf == ' ') {
415 o->type = OPTION_GROUP;
e1033436 416 o->help = xstrdup(skipspaces(sb.buf));
21d47835
PH
417 continue;
418 }
419
420 o->type = OPTION_CALLBACK;
421 o->help = xstrdup(skipspaces(s));
422 o->value = &parsed;
ff962a3f 423 o->flags = PARSE_OPT_NOARG;
21d47835 424 o->callback = &parseopt_dump;
9bab5b60
IB
425
426 /* Possible argument name hint */
427 end = s;
428 while (s > sb.buf && strchr("*=?!", s[-1]) == NULL)
429 --s;
430 if (s != sb.buf && s != end)
431 o->argh = xmemdupz(s, end - s);
432 if (s == sb.buf)
433 s = end;
434
ff962a3f
PH
435 while (s > sb.buf && strchr("*=?!", s[-1])) {
436 switch (*--s) {
437 case '=':
438 o->flags &= ~PARSE_OPT_NOARG;
439 break;
440 case '?':
441 o->flags &= ~PARSE_OPT_NOARG;
442 o->flags |= PARSE_OPT_OPTARG;
443 break;
444 case '!':
445 o->flags |= PARSE_OPT_NONEG;
446 break;
447 case '*':
448 o->flags |= PARSE_OPT_HIDDEN;
449 break;
450 }
21d47835
PH
451 }
452
453 if (s - sb.buf == 1) /* short option only */
454 o->short_name = *sb.buf;
455 else if (sb.buf[1] != ',') /* long option only */
456 o->long_name = xmemdupz(sb.buf, s - sb.buf);
457 else {
458 o->short_name = *sb.buf;
459 o->long_name = xmemdupz(sb.buf + 2, s - sb.buf - 2);
460 }
461 }
462 strbuf_release(&sb);
463
464 /* put an OPT_END() */
465 ALLOC_GROW(opts, onb + 1, osz);
466 memset(opts + onb, 0, sizeof(opts[onb]));
37782920 467 argc = parse_options(argc, argv, prefix, opts, usage,
29981380 468 (keep_dashdash ? PARSE_OPT_KEEP_DASHDASH : 0) |
fcd91f8d 469 (stop_at_non_option ? PARSE_OPT_STOP_AT_NON_OPTION : 0) |
47e9cd28 470 PARSE_OPT_SHELL_EVAL);
21d47835
PH
471
472 strbuf_addf(&parsed, " --");
b319ce4c 473 sq_quote_argv(&parsed, argv, 0);
21d47835
PH
474 puts(parsed.buf);
475 return 0;
476}
477
50325377
CC
478static int cmd_sq_quote(int argc, const char **argv)
479{
480 struct strbuf buf = STRBUF_INIT;
481
482 if (argc)
483 sq_quote_argv(&buf, argv, 0);
484 printf("%s\n", buf.buf);
485 strbuf_release(&buf);
486
487 return 0;
488}
489
b1b35969
CC
490static void die_no_single_rev(int quiet)
491{
492 if (quiet)
493 exit(1);
494 else
495 die("Needed a single revision");
496}
497
7006b5be 498static const char builtin_rev_parse_usage[] =
9c9b4f2f 499N_("git rev-parse --parseopt [<options>] -- [<args>...]\n"
2c7c184c 500 " or: git rev-parse --sq-quote [<arg>...]\n"
9c9b4f2f 501 " or: git rev-parse [<options>] [<arg>...]\n"
2c7c184c
NTND
502 "\n"
503 "Run \"git rev-parse --parseopt -h\" for more information on the first usage.");
7006b5be 504
a633fca0 505int cmd_rev_parse(int argc, const char **argv, const char *prefix)
178cb243 506{
dfd1b749 507 int i, as_is = 0, verify = 0, quiet = 0, revs_count = 0, type = 0;
14185673 508 int has_dashdash = 0;
12b9d327 509 int output_prefix = 0;
178cb243 510 unsigned char sha1[20];
c41a87dd 511 unsigned int flags = 0;
dfd1b749 512 const char *name = NULL;
c41a87dd 513 struct object_context unused;
2b2a5be3
MH
514 struct each_ref_fn_sha1_adapter wrapped_show_reference =
515 {show_reference, NULL};
516 struct each_ref_fn_sha1_adapter wrapped_anti_reference =
517 {anti_reference, NULL};
a62be77f 518
21d47835
PH
519 if (argc > 1 && !strcmp("--parseopt", argv[1]))
520 return cmd_parseopt(argc - 1, argv + 1, prefix);
521
50325377
CC
522 if (argc > 1 && !strcmp("--sq-quote", argv[1]))
523 return cmd_sq_quote(argc - 2, argv + 2);
524
7006b5be
JN
525 if (argc > 1 && !strcmp("-h", argv[1]))
526 usage(builtin_rev_parse_usage);
527
14185673
JK
528 for (i = 1; i < argc; i++) {
529 if (!strcmp(argv[i], "--")) {
530 has_dashdash = 1;
531 break;
532 }
533 }
534
5410a02a 535 prefix = setup_git_directory();
ef90d6d4 536 git_config(git_default_config, NULL);
178cb243 537 for (i = 1; i < argc; i++) {
16cee38a 538 const char *arg = argv[i];
fb18a2ed 539
557bd833
NTND
540 if (!strcmp(arg, "--git-path")) {
541 if (!argv[i + 1])
542 die("--git-path requires an argument");
543 puts(git_path("%s", argv[i + 1]));
544 i++;
545 continue;
546 }
178cb243 547 if (as_is) {
12b9d327 548 if (show_file(arg, output_prefix) && as_is < 2)
023e37c3 549 verify_filename(prefix, arg, 0);
178cb243
LT
550 continue;
551 }
3af06987
EW
552 if (!strcmp(arg,"-n")) {
553 if (++i >= argc)
554 die("-n requires an argument");
555 if ((filter & DO_FLAGS) && (filter & DO_REVS)) {
556 show(arg);
557 show(argv[i]);
558 }
559 continue;
560 }
59556548 561 if (starts_with(arg, "-n")) {
3af06987
EW
562 if ((filter & DO_FLAGS) && (filter & DO_REVS))
563 show(arg);
564 continue;
565 }
566
178cb243
LT
567 if (*arg == '-') {
568 if (!strcmp(arg, "--")) {
fb18a2ed 569 as_is = 2;
a08b6505
LT
570 /* Pass on the "--" if we show anything but files.. */
571 if (filter & (DO_FLAGS | DO_REVS))
12b9d327 572 show_file(arg, 0);
4866ccf0 573 continue;
178cb243
LT
574 }
575 if (!strcmp(arg, "--default")) {
a43219f2
DS
576 def = argv[++i];
577 if (!def)
578 die("--default requires an argument");
178cb243
LT
579 continue;
580 }
12b9d327 581 if (!strcmp(arg, "--prefix")) {
a43219f2
DS
582 prefix = argv[++i];
583 if (!prefix)
584 die("--prefix requires an argument");
12b9d327
JK
585 startup_info->prefix = prefix;
586 output_prefix = 1;
12b9d327
JK
587 continue;
588 }
8ebb0184 589 if (!strcmp(arg, "--revs-only")) {
4866ccf0 590 filter &= ~DO_NOREV;
8ebb0184
LT
591 continue;
592 }
593 if (!strcmp(arg, "--no-revs")) {
4866ccf0 594 filter &= ~DO_REVS;
8ebb0184
LT
595 continue;
596 }
f79b65aa 597 if (!strcmp(arg, "--flags")) {
4866ccf0 598 filter &= ~DO_NONFLAGS;
f79b65aa
LT
599 continue;
600 }
601 if (!strcmp(arg, "--no-flags")) {
4866ccf0 602 filter &= ~DO_FLAGS;
f79b65aa
LT
603 continue;
604 }
023d66ed 605 if (!strcmp(arg, "--verify")) {
4866ccf0
JH
606 filter &= ~(DO_FLAGS|DO_NOREV);
607 verify = 1;
023d66ed 608 continue;
921d865e 609 }
b1b35969
CC
610 if (!strcmp(arg, "--quiet") || !strcmp(arg, "-q")) {
611 quiet = 1;
c41a87dd 612 flags |= GET_SHA1_QUIETLY;
b1b35969
CC
613 continue;
614 }
62a604ba 615 if (!strcmp(arg, "--short") ||
59556548 616 starts_with(arg, "--short=")) {
d5012508
JH
617 filter &= ~(DO_FLAGS|DO_NOREV);
618 verify = 1;
619 abbrev = DEFAULT_ABBREV;
44de0da4
JF
620 if (arg[7] == '=')
621 abbrev = strtoul(arg + 8, NULL, 10);
1dc4fb84
JH
622 if (abbrev < MINIMUM_ABBREV)
623 abbrev = MINIMUM_ABBREV;
624 else if (40 <= abbrev)
625 abbrev = 40;
d5012508
JH
626 continue;
627 }
5bb2c65a
JH
628 if (!strcmp(arg, "--sq")) {
629 output_sq = 1;
630 continue;
631 }
042a4ed7
LT
632 if (!strcmp(arg, "--not")) {
633 show_type ^= REVERSED;
634 continue;
635 }
30b96fce 636 if (!strcmp(arg, "--symbolic")) {
a6d97d49
JH
637 symbolic = SHOW_SYMBOLIC_ASIS;
638 continue;
639 }
640 if (!strcmp(arg, "--symbolic-full-name")) {
641 symbolic = SHOW_SYMBOLIC_FULL;
30b96fce
JH
642 continue;
643 }
59556548 644 if (starts_with(arg, "--abbrev-ref") &&
a45d3469
BW
645 (!arg[12] || arg[12] == '=')) {
646 abbrev_ref = 1;
647 abbrev_ref_strict = warn_ambiguous_refs;
648 if (arg[12] == '=') {
649 if (!strcmp(arg + 13, "strict"))
650 abbrev_ref_strict = 1;
651 else if (!strcmp(arg + 13, "loose"))
652 abbrev_ref_strict = 0;
653 else
654 die("unknown mode for %s", arg);
655 }
656 continue;
657 }
960bba0d 658 if (!strcmp(arg, "--all")) {
2b2a5be3 659 for_each_ref(each_ref_fn_adapter, &wrapped_show_reference);
960bba0d
LT
660 continue;
661 }
59556548 662 if (starts_with(arg, "--disambiguate=")) {
957d7406
JH
663 for_each_abbrev(arg + 15, show_abbrev, NULL);
664 continue;
665 }
ad3f9a71 666 if (!strcmp(arg, "--bisect")) {
2b2a5be3
MH
667 for_each_ref_in("refs/bisect/bad",
668 each_ref_fn_adapter, &wrapped_show_reference);
669 for_each_ref_in("refs/bisect/good",
670 each_ref_fn_adapter, &wrapped_anti_reference);
ad3f9a71
LT
671 continue;
672 }
59556548 673 if (starts_with(arg, "--branches=")) {
2b2a5be3
MH
674 for_each_glob_ref_in(each_ref_fn_adapter, arg + 11,
675 "refs/heads/", &wrapped_show_reference);
9dc01bf0 676 clear_ref_exclusion(&ref_excludes);
b09fe971
IL
677 continue;
678 }
a62be77f 679 if (!strcmp(arg, "--branches")) {
2b2a5be3 680 for_each_branch_ref(each_ref_fn_adapter, &wrapped_show_reference);
9dc01bf0 681 clear_ref_exclusion(&ref_excludes);
a62be77f
SE
682 continue;
683 }
59556548 684 if (starts_with(arg, "--tags=")) {
2b2a5be3
MH
685 for_each_glob_ref_in(each_ref_fn_adapter, arg + 7,
686 "refs/tags/", &wrapped_show_reference);
9dc01bf0 687 clear_ref_exclusion(&ref_excludes);
b09fe971
IL
688 continue;
689 }
a62be77f 690 if (!strcmp(arg, "--tags")) {
2b2a5be3 691 for_each_tag_ref(each_ref_fn_adapter, &wrapped_show_reference);
9dc01bf0 692 clear_ref_exclusion(&ref_excludes);
a62be77f
SE
693 continue;
694 }
59556548 695 if (starts_with(arg, "--glob=")) {
2b2a5be3
MH
696 for_each_glob_ref(each_ref_fn_adapter, arg + 7,
697 &wrapped_show_reference);
9dc01bf0 698 clear_ref_exclusion(&ref_excludes);
d08bae7e
IL
699 continue;
700 }
59556548 701 if (starts_with(arg, "--remotes=")) {
2b2a5be3
MH
702 for_each_glob_ref_in(each_ref_fn_adapter, arg + 10,
703 "refs/remotes/", &wrapped_show_reference);
9dc01bf0 704 clear_ref_exclusion(&ref_excludes);
b09fe971
IL
705 continue;
706 }
a62be77f 707 if (!strcmp(arg, "--remotes")) {
2b2a5be3 708 for_each_remote_ref(each_ref_fn_adapter, &wrapped_show_reference);
9dc01bf0
JH
709 clear_ref_exclusion(&ref_excludes);
710 continue;
711 }
ad704485 712 if (starts_with(arg, "--exclude=")) {
9dc01bf0 713 add_ref_exclusion(&ref_excludes, arg + 10);
a62be77f
SE
714 continue;
715 }
68889b41
JK
716 if (!strcmp(arg, "--local-env-vars")) {
717 int i;
718 for (i = 0; local_repo_env[i]; i++)
719 printf("%s\n", local_repo_env[i]);
720 continue;
721 }
7cceca5c
SD
722 if (!strcmp(arg, "--show-toplevel")) {
723 const char *work_tree = get_git_work_tree();
724 if (work_tree)
725 puts(work_tree);
726 continue;
727 }
d288a700 728 if (!strcmp(arg, "--show-prefix")) {
4866ccf0
JH
729 if (prefix)
730 puts(prefix);
658219f1
RL
731 else
732 putchar('\n');
d288a700
LT
733 continue;
734 }
5f94c730
JH
735 if (!strcmp(arg, "--show-cdup")) {
736 const char *pfx = prefix;
e90fdc39
JS
737 if (!is_inside_work_tree()) {
738 const char *work_tree =
739 get_git_work_tree();
740 if (work_tree)
741 printf("%s\n", work_tree);
742 continue;
743 }
5f94c730
JH
744 while (pfx) {
745 pfx = strchr(pfx, '/');
746 if (pfx) {
747 pfx++;
748 printf("../");
749 }
750 }
751 putchar('\n');
752 continue;
753 }
a8783eeb
LT
754 if (!strcmp(arg, "--git-dir")) {
755 const char *gitdir = getenv(GIT_DIR_ENVIRONMENT);
56b9f6e7 756 char *cwd;
d06f15d9 757 int len;
a8783eeb
LT
758 if (gitdir) {
759 puts(gitdir);
760 continue;
761 }
762 if (!prefix) {
763 puts(".git");
764 continue;
765 }
56b9f6e7 766 cwd = xgetcwd();
d06f15d9
NTND
767 len = strlen(cwd);
768 printf("%s%s.git\n", cwd, len && cwd[len-1] != '/' ? "/" : "");
56b9f6e7 769 free(cwd);
a8783eeb
LT
770 continue;
771 }
31e26ebc
NTND
772 if (!strcmp(arg, "--git-common-dir")) {
773 puts(get_git_common_dir());
774 continue;
775 }
68889b41 776 if (!strcmp(arg, "--resolve-git-dir")) {
a43219f2 777 const char *gitdir = argv[++i];
68889b41 778 if (!gitdir)
a43219f2
DS
779 die("--resolve-git-dir requires an argument");
780 gitdir = resolve_gitdir(gitdir);
781 if (!gitdir)
782 die("not a gitdir '%s'", argv[i]);
68889b41
JK
783 puts(gitdir);
784 continue;
785 }
6d9ba67b
JS
786 if (!strcmp(arg, "--is-inside-git-dir")) {
787 printf("%s\n", is_inside_git_dir() ? "true"
788 : "false");
789 continue;
790 }
892c41b9
ML
791 if (!strcmp(arg, "--is-inside-work-tree")) {
792 printf("%s\n", is_inside_work_tree() ? "true"
793 : "false");
794 continue;
795 }
493c774e
ML
796 if (!strcmp(arg, "--is-bare-repository")) {
797 printf("%s\n", is_bare_repository() ? "true"
798 : "false");
799 continue;
800 }
a76295da
NTND
801 if (!strcmp(arg, "--shared-index-path")) {
802 if (read_cache() < 0)
803 die(_("Could not read the index"));
804 if (the_index.split_index) {
805 const unsigned char *sha1 = the_index.split_index->base_sha1;
806 puts(git_path("sharedindex.%s", sha1_to_hex(sha1)));
807 }
808 continue;
809 }
59556548 810 if (starts_with(arg, "--since=")) {
c1babb1d
LT
811 show_datestring("--max-age=", arg+8);
812 continue;
813 }
59556548 814 if (starts_with(arg, "--after=")) {
c1babb1d
LT
815 show_datestring("--max-age=", arg+8);
816 continue;
817 }
59556548 818 if (starts_with(arg, "--before=")) {
c1babb1d
LT
819 show_datestring("--min-age=", arg+9);
820 continue;
821 }
59556548 822 if (starts_with(arg, "--until=")) {
c1babb1d
LT
823 show_datestring("--min-age=", arg+8);
824 continue;
825 }
9523a4c2 826 if (show_flag(arg) && verify)
b1b35969 827 die_no_single_rev(quiet);
178cb243
LT
828 continue;
829 }
4866ccf0
JH
830
831 /* Not a flag argument */
3dd4e732
SB
832 if (try_difference(arg))
833 continue;
2122f8b9
BS
834 if (try_parent_shorthands(arg))
835 continue;
dfd1b749
CC
836 name = arg;
837 type = NORMAL;
838 if (*arg == '^') {
839 name++;
840 type = REVERSED;
800644c5 841 }
c41a87dd 842 if (!get_sha1_with_context(name, flags, sha1, &unused)) {
dfd1b749
CC
843 if (verify)
844 revs_count++;
845 else
846 show_rev(type, sha1, name);
800644c5
LT
847 continue;
848 }
75ecfce3
CC
849 if (verify)
850 die_no_single_rev(quiet);
14185673
JK
851 if (has_dashdash)
852 die("bad revision '%s'", arg);
9ad0a933 853 as_is = 1;
12b9d327 854 if (!show_file(arg, output_prefix))
9ad0a933 855 continue;
023e37c3 856 verify_filename(prefix, arg, 1);
023d66ed 857 }
dfd1b749
CC
858 if (verify) {
859 if (revs_count == 1) {
860 show_rev(type, sha1, name);
861 return 0;
862 } else if (revs_count == 0 && show_default())
863 return 0;
b1b35969 864 die_no_single_rev(quiet);
dfd1b749
CC
865 } else
866 show_default();
178cb243
LT
867 return 0;
868}