sha1-name.c: remove implicit dependency on the_index
[git/git.git] / builtin / grep.c
CommitLineData
5010cb5f
JH
1/*
2 * Builtin "git grep"
3 *
4 * Copyright (c) 2006 Junio C Hamano
5 */
6#include "cache.h"
627d9342 7#include "repository.h"
b2141fc1 8#include "config.h"
5010cb5f
JH
9#include "blob.h"
10#include "tree.h"
11#include "commit.h"
12#include "tag.h"
1362671f 13#include "tree-walk.h"
5010cb5f 14#include "builtin.h"
3e230fa1 15#include "parse-options.h"
678e484b
JS
16#include "string-list.h"
17#include "run-command.h"
60ecac98 18#include "userdiff.h"
83b5d2f5 19#include "grep.h"
493b7a08 20#include "quote.h"
59332d13 21#include "dir.h"
64acde94 22#include "pathspec.h"
0281e487 23#include "submodule.h"
74ed4371 24#include "submodule-config.h"
90c62155 25#include "object-store.h"
5b594f45 26
3e230fa1 27static char const * const grep_usage[] = {
9c9b4f2f 28 N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"),
3e230fa1
RS
29 NULL
30};
31
0281e487 32static int recurse_submodules;
0281e487 33
89f09dd3
VL
34#define GREP_NUM_THREADS_DEFAULT 8
35static int num_threads;
5b594f45 36
89f09dd3 37static pthread_t *threads;
5b594f45 38
5b594f45
FK
39/* We use one producer thread and THREADS consumer
40 * threads. The producer adds struct work_items to 'todo' and the
41 * consumers pick work items from the same array.
42 */
9cba13ca 43struct work_item {
8f24a632 44 struct grep_source source;
5b594f45
FK
45 char done;
46 struct strbuf out;
47};
48
49/* In the range [todo_done, todo_start) in 'todo' we have work_items
50 * that have been or are processed by a consumer thread. We haven't
51 * written the result for these to stdout yet.
52 *
53 * The work_items in [todo_start, todo_end) are waiting to be picked
54 * up by a consumer thread.
55 *
56 * The ranges are modulo TODO_SIZE.
57 */
58#define TODO_SIZE 128
59static struct work_item todo[TODO_SIZE];
60static int todo_start;
61static int todo_end;
62static int todo_done;
63
64/* Has all work items been added? */
65static int all_work_added;
66
67/* This lock protects all the variables above. */
68static pthread_mutex_t grep_mutex;
69
1487a12b
JH
70static inline void grep_lock(void)
71{
8df4c295 72 pthread_mutex_lock(&grep_mutex);
1487a12b
JH
73}
74
75static inline void grep_unlock(void)
76{
8df4c295 77 pthread_mutex_unlock(&grep_mutex);
1487a12b
JH
78}
79
5b594f45
FK
80/* Signalled when a new work_item is added to todo. */
81static pthread_cond_t cond_add;
82
83/* Signalled when the result from one work_item is written to
84 * stdout.
85 */
86static pthread_cond_t cond_write;
87
88/* Signalled when we are finished with everything. */
89static pthread_cond_t cond_result;
90
08303c36 91static int skip_first_line;
431d6e7b 92
e2e05d61 93static void add_work(struct grep_opt *opt, const struct grep_source *gs)
5b594f45
FK
94{
95 grep_lock();
96
97 while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
98 pthread_cond_wait(&cond_write, &grep_mutex);
99 }
100
e2e05d61 101 todo[todo_end].source = *gs;
9dd5245c 102 if (opt->binary != GREP_BINARY_TEXT)
acd00ea0
NTND
103 grep_source_load_driver(&todo[todo_end].source,
104 opt->repo->index);
5b594f45
FK
105 todo[todo_end].done = 0;
106 strbuf_reset(&todo[todo_end].out);
107 todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
108
109 pthread_cond_signal(&cond_add);
110 grep_unlock();
111}
112
113static struct work_item *get_work(void)
114{
115 struct work_item *ret;
116
117 grep_lock();
118 while (todo_start == todo_end && !all_work_added) {
119 pthread_cond_wait(&cond_add, &grep_mutex);
120 }
121
122 if (todo_start == todo_end && all_work_added) {
123 ret = NULL;
124 } else {
125 ret = &todo[todo_start];
126 todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
127 }
128 grep_unlock();
129 return ret;
130}
131
5b594f45
FK
132static void work_done(struct work_item *w)
133{
134 int old_done;
135
136 grep_lock();
137 w->done = 1;
138 old_done = todo_done;
139 for(; todo[todo_done].done && todo_done != todo_start;
140 todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
141 w = &todo[todo_done];
431d6e7b 142 if (w->out.len) {
08303c36
RS
143 const char *p = w->out.buf;
144 size_t len = w->out.len;
145
146 /* Skip the leading hunk mark of the first file. */
147 if (skip_first_line) {
148 while (len) {
149 len--;
150 if (*p++ == '\n')
151 break;
152 }
153 skip_first_line = 0;
154 }
155
156 write_or_die(1, p, len);
431d6e7b 157 }
8f24a632 158 grep_source_clear(&w->source);
5b594f45
FK
159 }
160
161 if (old_done != todo_done)
162 pthread_cond_signal(&cond_write);
163
164 if (all_work_added && todo_done == todo_end)
165 pthread_cond_signal(&cond_result);
166
167 grep_unlock();
168}
169
170static void *run(void *arg)
171{
172 int hit = 0;
173 struct grep_opt *opt = arg;
174
175 while (1) {
176 struct work_item *w = get_work();
177 if (!w)
178 break;
179
180 opt->output_priv = w;
f9ee2fcd 181 hit |= grep_source(opt, &w->source);
8f24a632 182 grep_source_clear_data(&w->source);
5b594f45
FK
183 work_done(w);
184 }
bfac23d9
DM
185 free_grep_patterns(arg);
186 free(arg);
5b594f45
FK
187
188 return (void*) (intptr_t) hit;
189}
190
191static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
192{
193 struct work_item *w = opt->output_priv;
194 strbuf_add(&w->out, buf, size);
195}
196
197static void start_threads(struct grep_opt *opt)
198{
199 int i;
200
201 pthread_mutex_init(&grep_mutex, NULL);
b3aeb285 202 pthread_mutex_init(&grep_read_mutex, NULL);
0579f91d 203 pthread_mutex_init(&grep_attr_mutex, NULL);
5b594f45
FK
204 pthread_cond_init(&cond_add, NULL);
205 pthread_cond_init(&cond_write, NULL);
206 pthread_cond_init(&cond_result, NULL);
78db6ea9 207 grep_use_locks = 1;
5b594f45
FK
208
209 for (i = 0; i < ARRAY_SIZE(todo); i++) {
210 strbuf_init(&todo[i].out, 0);
211 }
212
89f09dd3
VL
213 threads = xcalloc(num_threads, sizeof(*threads));
214 for (i = 0; i < num_threads; i++) {
5b594f45
FK
215 int err;
216 struct grep_opt *o = grep_opt_dup(opt);
217 o->output = strbuf_out;
6d423dd5
ÆAB
218 if (i)
219 o->debug = 0;
5b594f45
FK
220 compile_grep_patterns(o);
221 err = pthread_create(&threads[i], NULL, run, o);
222
223 if (err)
2fc5f9f1 224 die(_("grep: failed to create thread: %s"),
5b594f45
FK
225 strerror(err));
226 }
227}
228
229static int wait_all(void)
230{
231 int hit = 0;
232 int i;
233
4002e87c 234 if (!HAVE_THREADS)
fd6263fb 235 BUG("Never call this function unless you have started threads");
4002e87c 236
5b594f45
FK
237 grep_lock();
238 all_work_added = 1;
239
240 /* Wait until all work is done. */
241 while (todo_done != todo_end)
242 pthread_cond_wait(&cond_result, &grep_mutex);
243
244 /* Wake up all the consumer threads so they can see that there
245 * is no more work to do.
246 */
247 pthread_cond_broadcast(&cond_add);
248 grep_unlock();
249
89f09dd3 250 for (i = 0; i < num_threads; i++) {
5b594f45
FK
251 void *h;
252 pthread_join(threads[i], &h);
253 hit |= (int) (intptr_t) h;
254 }
255
89f09dd3
VL
256 free(threads);
257
5b594f45 258 pthread_mutex_destroy(&grep_mutex);
b3aeb285 259 pthread_mutex_destroy(&grep_read_mutex);
0579f91d 260 pthread_mutex_destroy(&grep_attr_mutex);
5b594f45
FK
261 pthread_cond_destroy(&cond_add);
262 pthread_cond_destroy(&cond_write);
263 pthread_cond_destroy(&cond_result);
78db6ea9 264 grep_use_locks = 0;
5b594f45
FK
265
266 return hit;
267}
5b594f45 268
15fabd1b
JH
269static int grep_cmd_config(const char *var, const char *value, void *cb)
270{
271 int st = grep_config(var, value, cb);
33c643bb 272 if (git_color_default_config(var, value, cb) < 0)
15fabd1b 273 st = -1;
89f09dd3
VL
274
275 if (!strcmp(var, "grep.threads")) {
276 num_threads = git_config_int(var, value);
277 if (num_threads < 0)
278 die(_("invalid number of threads specified (%d) for %s"),
279 num_threads, var);
fd6263fb 280 else if (!HAVE_THREADS && num_threads > 1) {
d1edee4a
ÆAB
281 /*
282 * TRANSLATORS: %s is the configuration
283 * variable for tweaking threads, currently
284 * grep.threads
285 */
286 warning(_("no threads support, ignoring %s"), var);
fd6263fb 287 num_threads = 1;
d1edee4a 288 }
89f09dd3
VL
289 }
290
9071c078
SB
291 if (!strcmp(var, "submodule.recurse"))
292 recurse_submodules = git_config_bool(var, value);
293
15fabd1b
JH
294 return st;
295}
296
1db11086 297static void *lock_and_read_oid_file(const struct object_id *oid, enum object_type *type, unsigned long *size)
5f02d315
JH
298{
299 void *data;
300
b3aeb285 301 grep_read_lock();
b4f5aca4 302 data = read_object_file(oid, type, size);
b3aeb285 303 grep_read_unlock();
5b594f45
FK
304 return data;
305}
306
1db11086 307static int grep_oid(struct grep_opt *opt, const struct object_id *oid,
55c61688
NTND
308 const char *filename, int tree_name_len,
309 const char *path)
5b594f45
FK
310{
311 struct strbuf pathbuf = STRBUF_INIT;
e2e05d61 312 struct grep_source gs;
5b594f45 313
f9ee2fcd
BW
314 if (opt->relative && opt->prefix_length) {
315 quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf);
316 strbuf_insert(&pathbuf, 0, filename, tree_name_len);
5b594f45
FK
317 } else {
318 strbuf_addstr(&pathbuf, filename);
319 }
320
e2e05d61 321 grep_source_init(&gs, GREP_SOURCE_OID, pathbuf.buf, path, oid);
38ef24dc 322 strbuf_release(&pathbuf);
e2e05d61 323
fd6263fb 324 if (num_threads > 1) {
e2e05d61
RV
325 /*
326 * add_work() copies gs and thus assumes ownership of
327 * its fields, so do not call grep_source_clear()
328 */
329 add_work(opt, &gs);
5b594f45 330 return 0;
4002e87c 331 } else {
5b594f45 332 int hit;
5010cb5f 333
8f24a632 334 hit = grep_source(opt, &gs);
dc49cd76 335
8f24a632
JK
336 grep_source_clear(&gs);
337 return hit;
5010cb5f 338 }
5b594f45
FK
339}
340
341static int grep_file(struct grep_opt *opt, const char *filename)
342{
343 struct strbuf buf = STRBUF_INIT;
e2e05d61 344 struct grep_source gs;
5b594f45 345
f9ee2fcd
BW
346 if (opt->relative && opt->prefix_length)
347 quote_path_relative(filename, opt->prefix, &buf);
348 else
349 strbuf_addstr(&buf, filename);
5b594f45 350
e2e05d61 351 grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
38ef24dc 352 strbuf_release(&buf);
e2e05d61 353
fd6263fb 354 if (num_threads > 1) {
e2e05d61
RV
355 /*
356 * add_work() copies gs and thus assumes ownership of
357 * its fields, so do not call grep_source_clear()
358 */
359 add_work(opt, &gs);
5b594f45 360 return 0;
4002e87c 361 } else {
5b594f45 362 int hit;
5b594f45 363
8f24a632
JK
364 hit = grep_source(opt, &gs);
365
366 grep_source_clear(&gs);
5b594f45
FK
367 return hit;
368 }
5010cb5f
JH
369}
370
678e484b
JS
371static void append_path(struct grep_opt *opt, const void *data, size_t len)
372{
373 struct string_list *path_list = opt->output_priv;
374
375 if (len == 1 && *(const char *)data == '\0')
376 return;
0c72cead 377 string_list_append(path_list, xstrndup(data, len));
678e484b
JS
378}
379
380static void run_pager(struct grep_opt *opt, const char *prefix)
381{
382 struct string_list *path_list = opt->output_priv;
850d2fec 383 struct child_process child = CHILD_PROCESS_INIT;
678e484b
JS
384 int i, status;
385
386 for (i = 0; i < path_list->nr; i++)
850d2fec
JK
387 argv_array_push(&child.args, path_list->items[i].string);
388 child.dir = prefix;
389 child.use_shell = 1;
678e484b 390
850d2fec 391 status = run_command(&child);
678e484b
JS
392 if (status)
393 exit(status);
678e484b
JS
394}
395
dba093dd 396static int grep_cache(struct grep_opt *opt,
f9ee2fcd
BW
397 const struct pathspec *pathspec, int cached);
398static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
399 struct tree_desc *tree, struct strbuf *base, int tn_len,
dba093dd 400 int check_attr);
0281e487 401
dba093dd 402static int grep_submodule(struct grep_opt *opt,
f9ee2fcd
BW
403 const struct pathspec *pathspec,
404 const struct object_id *oid,
405 const char *filename, const char *path)
0281e487 406{
dba093dd 407 struct repository *superproject = opt->repo;
f9ee2fcd 408 struct repository submodule;
dba093dd 409 struct grep_opt subopt;
f9ee2fcd 410 int hit;
74ed4371 411
76e9bdc4
AO
412 /*
413 * NEEDSWORK: submodules functions need to be protected because they
414 * access the object store via config_from_gitmodules(): the latter
415 * uses get_oid() which, for now, relies on the global the_repository
416 * object.
417 */
418 grep_read_lock();
419
420 if (!is_submodule_active(superproject, path)) {
421 grep_read_unlock();
f9ee2fcd 422 return 0;
76e9bdc4 423 }
0281e487 424
76e9bdc4
AO
425 if (repo_submodule_init(&submodule, superproject, path)) {
426 grep_read_unlock();
f9ee2fcd 427 return 0;
76e9bdc4 428 }
be80a239 429
f9ee2fcd 430 repo_read_gitmodules(&submodule);
0281e487 431
74ed4371 432 /*
f9ee2fcd
BW
433 * NEEDSWORK: This adds the submodule's object directory to the list of
434 * alternates for the single in-memory object store. This has some bad
435 * consequences for memory (processed objects will never be freed) and
436 * performance (this increases the number of pack files git has to pay
437 * attention to, to the sum of the number of pack files in all the
438 * repositories processed so far). This can be removed once the object
439 * store is no longer global and instead is a member of the repository
440 * object.
74ed4371 441 */
f0eaf638 442 add_to_alternates_memory(submodule.objects->odb->path);
9560e624 443 grep_read_unlock();
74ed4371 444
dba093dd
NTND
445 memcpy(&subopt, opt, sizeof(subopt));
446 subopt.repo = &submodule;
447
f9ee2fcd
BW
448 if (oid) {
449 struct object *object;
450 struct tree_desc tree;
451 void *data;
452 unsigned long size;
453 struct strbuf base = STRBUF_INIT;
74ed4371 454
f9ee2fcd 455 object = parse_object_or_die(oid, oid_to_hex(oid));
0281e487 456
f9ee2fcd 457 grep_read_lock();
02f0547e 458 data = read_object_with_reference(&object->oid, tree_type,
f9ee2fcd
BW
459 &size, NULL);
460 grep_read_unlock();
0281e487 461
f9ee2fcd
BW
462 if (!data)
463 die(_("unable to read tree (%s)"), oid_to_hex(&object->oid));
0281e487 464
f9ee2fcd
BW
465 strbuf_addstr(&base, filename);
466 strbuf_addch(&base, '/');
0281e487 467
f9ee2fcd 468 init_tree_desc(&tree, data, size);
dba093dd
NTND
469 hit = grep_tree(&subopt, pathspec, &tree, &base, base.len,
470 object->type == OBJ_COMMIT);
f9ee2fcd
BW
471 strbuf_release(&base);
472 free(data);
473 } else {
dba093dd 474 hit = grep_cache(&subopt, pathspec, 1);
e6fac7f3 475 }
0281e487 476
f9ee2fcd
BW
477 repo_clear(&submodule);
478 return hit;
0281e487
BW
479}
480
dba093dd 481static int grep_cache(struct grep_opt *opt,
f9ee2fcd 482 const struct pathspec *pathspec, int cached)
5010cb5f 483{
dba093dd 484 struct repository *repo = opt->repo;
5010cb5f
JH
485 int hit = 0;
486 int nr;
0281e487
BW
487 struct strbuf name = STRBUF_INIT;
488 int name_base_len = 0;
f9ee2fcd
BW
489 if (repo->submodule_prefix) {
490 name_base_len = strlen(repo->submodule_prefix);
491 strbuf_addstr(&name, repo->submodule_prefix);
0281e487
BW
492 }
493
b2aa84c7 494 if (repo_read_index(repo) < 0)
5507067d 495 die(_("index file corrupt"));
5010cb5f 496
f9ee2fcd
BW
497 for (nr = 0; nr < repo->index->cache_nr; nr++) {
498 const struct cache_entry *ce = repo->index->cache[nr];
0281e487
BW
499 strbuf_setlen(&name, name_base_len);
500 strbuf_addstr(&name, ce->name);
501
502 if (S_ISREG(ce->ce_mode) &&
a4009b0b 503 match_pathspec(repo->index, pathspec, name.buf, name.len, 0, NULL,
0281e487
BW
504 S_ISDIR(ce->ce_mode) ||
505 S_ISGITLINK(ce->ce_mode))) {
506 /*
507 * If CE_VALID is on, we assume worktree file and its
508 * cache entry are identical, even if worktree file has
509 * been modified, so use cache version instead
510 */
511 if (cached || (ce->ce_flags & CE_VALID) ||
512 ce_skip_worktree(ce)) {
513 if (ce_stage(ce) || ce_intent_to_add(ce))
514 continue;
f9ee2fcd
BW
515 hit |= grep_oid(opt, &ce->oid, name.buf,
516 0, name.buf);
0281e487 517 } else {
f9ee2fcd 518 hit |= grep_file(opt, name.buf);
0281e487
BW
519 }
520 } else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
a4009b0b 521 submodule_path_match(repo->index, pathspec, name.buf, NULL)) {
dba093dd 522 hit |= grep_submodule(opt, pathspec, NULL, ce->name, ce->name);
0281e487 523 } else {
5010cb5f 524 continue;
36f2587f 525 }
0281e487 526
36f2587f
JH
527 if (ce_stage(ce)) {
528 do {
529 nr++;
f9ee2fcd
BW
530 } while (nr < repo->index->cache_nr &&
531 !strcmp(ce->name, repo->index->cache[nr]->name));
36f2587f
JH
532 nr--; /* compensate for loop control */
533 }
c8610a2e
JH
534 if (hit && opt->status_only)
535 break;
5010cb5f 536 }
0281e487
BW
537
538 strbuf_release(&name);
5010cb5f
JH
539 return hit;
540}
541
f34bbc15 542static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
55c61688 543 struct tree_desc *tree, struct strbuf *base, int tn_len,
dba093dd 544 int check_attr)
5010cb5f 545{
dba093dd 546 struct repository *repo = opt->repo;
d688cf07
NTND
547 int hit = 0;
548 enum interesting match = entry_not_interesting;
4c068a98 549 struct name_entry entry;
e5e062b6 550 int old_baselen = base->len;
74ed4371
BW
551 struct strbuf name = STRBUF_INIT;
552 int name_base_len = 0;
f9ee2fcd
BW
553 if (repo->submodule_prefix) {
554 strbuf_addstr(&name, repo->submodule_prefix);
74ed4371
BW
555 name_base_len = name.len;
556 }
5010cb5f 557
4c068a98 558 while (tree_entry(tree, &entry)) {
0de16337 559 int te_len = tree_entry_len(&entry);
e5e062b6 560
d688cf07 561 if (match != all_entries_interesting) {
74ed4371
BW
562 strbuf_addstr(&name, base->buf + tn_len);
563 match = tree_entry_interesting(&entry, &name,
564 0, pathspec);
565 strbuf_setlen(&name, name_base_len);
566
d688cf07 567 if (match == all_entries_not_interesting)
97d0b74a 568 break;
d688cf07 569 if (match == entry_not_interesting)
1376e507
NTND
570 continue;
571 }
5010cb5f 572
1376e507 573 strbuf_add(base, entry.path, te_len);
e0eb889f 574
1376e507 575 if (S_ISREG(entry.mode)) {
1db11086 576 hit |= grep_oid(opt, entry.oid, base->buf, tn_len,
55c61688 577 check_attr ? base->buf + tn_len : NULL);
74ed4371 578 } else if (S_ISDIR(entry.mode)) {
21666f1a 579 enum object_type type;
5010cb5f
JH
580 struct tree_desc sub;
581 void *data;
6fda5e51
LT
582 unsigned long size;
583
1db11086 584 data = lock_and_read_oid_file(entry.oid, &type, &size);
5010cb5f 585 if (!data)
2fc5f9f1 586 die(_("unable to read tree (%s)"),
7d924c91 587 oid_to_hex(entry.oid));
1376e507
NTND
588
589 strbuf_addch(base, '/');
6fda5e51 590 init_tree_desc(&sub, data, size);
55c61688 591 hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
dba093dd 592 check_attr);
5010cb5f 593 free(data);
74ed4371 594 } else if (recurse_submodules && S_ISGITLINK(entry.mode)) {
dba093dd 595 hit |= grep_submodule(opt, pathspec, entry.oid,
f9ee2fcd 596 base->buf, base->buf + tn_len);
5010cb5f 597 }
74ed4371 598
e5e062b6
NTND
599 strbuf_setlen(base, old_baselen);
600
c8610a2e
JH
601 if (hit && opt->status_only)
602 break;
5010cb5f 603 }
74ed4371
BW
604
605 strbuf_release(&name);
5010cb5f
JH
606 return hit;
607}
608
f34bbc15 609static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
6856077a 610 struct object *obj, const char *name, const char *path)
5010cb5f 611{
1974632c 612 if (obj->type == OBJ_BLOB)
1db11086 613 return grep_oid(opt, &obj->oid, name, 0, path);
1974632c 614 if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
5010cb5f
JH
615 struct tree_desc tree;
616 void *data;
6fda5e51 617 unsigned long size;
e5e062b6
NTND
618 struct strbuf base;
619 int hit, len;
620
b3aeb285 621 grep_read_lock();
02f0547e 622 data = read_object_with_reference(&obj->oid, tree_type,
6fda5e51 623 &size, NULL);
b3aeb285 624 grep_read_unlock();
8cb5775b 625
5010cb5f 626 if (!data)
f2fd0760 627 die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
e5e062b6
NTND
628
629 len = name ? strlen(name) : 0;
630 strbuf_init(&base, PATH_MAX + len + 1);
631 if (len) {
632 strbuf_add(&base, name, len);
633 strbuf_addch(&base, ':');
634 }
6fda5e51 635 init_tree_desc(&tree, data, size);
55c61688 636 hit = grep_tree(opt, pathspec, &tree, &base, base.len,
dba093dd 637 obj->type == OBJ_COMMIT);
e5e062b6 638 strbuf_release(&base);
5010cb5f
JH
639 free(data);
640 return hit;
641 }
debca9d2 642 die(_("unable to grep from object of type %s"), type_name(obj->type));
5010cb5f
JH
643}
644
f34bbc15 645static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
30d00c39
JN
646 const struct object_array *list)
647{
648 unsigned int i;
649 int hit = 0;
650 const unsigned int nr = list->nr;
651
652 for (i = 0; i < nr; i++) {
653 struct object *real_obj;
dba093dd 654 real_obj = deref_tag(opt->repo, list->objects[i].item,
a74093da 655 NULL, 0);
74ed4371
BW
656
657 /* load the gitmodules file for this rev */
658 if (recurse_submodules) {
dba093dd 659 submodule_free(opt->repo);
cd73de47 660 gitmodules_config_oid(&real_obj->oid);
74ed4371 661 }
6856077a
JT
662 if (grep_object(opt, pathspec, real_obj, list->objects[i].name,
663 list->objects[i].path)) {
30d00c39
JN
664 hit = 1;
665 if (opt->status_only)
666 break;
667 }
668 }
669 return hit;
670}
671
dbfae86a 672static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
85975c0c 673 int exc_std, int use_index)
59332d13
JH
674{
675 struct dir_struct dir;
676 int i, hit = 0;
677
678 memset(&dir, 0, sizeof(dir));
85975c0c
JK
679 if (!use_index)
680 dir.flags |= DIR_NO_GITLINKS;
0a93fb8a
JH
681 if (exc_std)
682 setup_standard_excludes(&dir);
59332d13 683
dba093dd 684 fill_directory(&dir, opt->repo->index, pathspec);
59332d13 685 for (i = 0; i < dir.nr; i++) {
dba093dd 686 if (!dir_path_match(opt->repo->index, dir.entries[i], pathspec, 0, NULL))
9d8b831b 687 continue;
59332d13
JH
688 hit |= grep_file(opt, dir.entries[i]->name);
689 if (hit && opt->status_only)
690 break;
691 }
59332d13
JH
692 return hit;
693}
694
ff3c7f9a
RS
695static int context_callback(const struct option *opt, const char *arg,
696 int unset)
3e230fa1
RS
697{
698 struct grep_opt *grep_opt = opt->value;
699 int value;
700 const char *endp;
701
702 if (unset) {
703 grep_opt->pre_context = grep_opt->post_context = 0;
704 return 0;
705 }
706 value = strtol(arg, (char **)&endp, 10);
707 if (*endp) {
2fc5f9f1 708 return error(_("switch `%c' expects a numerical value"),
3e230fa1
RS
709 opt->short_name);
710 }
711 grep_opt->pre_context = grep_opt->post_context = value;
712 return 0;
713}
714
ff3c7f9a 715static int file_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
716{
717 struct grep_opt *grep_opt = opt->value;
517fe807 718 int from_stdin;
3e230fa1
RS
719 FILE *patterns;
720 int lno = 0;
cfe370c6 721 struct strbuf sb = STRBUF_INIT;
3e230fa1 722
517fe807
JK
723 BUG_ON_OPT_NEG(unset);
724
725 from_stdin = !strcmp(arg, "-");
c41dd2fd 726 patterns = from_stdin ? stdin : fopen(arg, "r");
3e230fa1 727 if (!patterns)
2fc5f9f1 728 die_errno(_("cannot open '%s'"), arg);
a5518431 729 while (strbuf_getline(&sb, patterns) == 0) {
3e230fa1
RS
730 /* ignore empty line like grep does */
731 if (sb.len == 0)
732 continue;
ed40a095 733
ec830611
RS
734 append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
735 GREP_PATTERN);
3e230fa1 736 }
c41dd2fd
RS
737 if (!from_stdin)
738 fclose(patterns);
3e230fa1
RS
739 strbuf_release(&sb);
740 return 0;
741}
742
ff3c7f9a 743static int not_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
744{
745 struct grep_opt *grep_opt = opt->value;
517fe807
JK
746 BUG_ON_OPT_NEG(unset);
747 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
748 append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
749 return 0;
750}
751
ff3c7f9a 752static int and_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
753{
754 struct grep_opt *grep_opt = opt->value;
517fe807
JK
755 BUG_ON_OPT_NEG(unset);
756 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
757 append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
758 return 0;
759}
760
ff3c7f9a 761static int open_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
762{
763 struct grep_opt *grep_opt = opt->value;
517fe807
JK
764 BUG_ON_OPT_NEG(unset);
765 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
766 append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
767 return 0;
768}
769
ff3c7f9a 770static int close_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
771{
772 struct grep_opt *grep_opt = opt->value;
517fe807
JK
773 BUG_ON_OPT_NEG(unset);
774 BUG_ON_OPT_ARG(arg);
3e230fa1
RS
775 append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
776 return 0;
777}
778
ff3c7f9a
RS
779static int pattern_callback(const struct option *opt, const char *arg,
780 int unset)
3e230fa1
RS
781{
782 struct grep_opt *grep_opt = opt->value;
517fe807 783 BUG_ON_OPT_NEG(unset);
3e230fa1
RS
784 append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
785 return 0;
786}
5010cb5f 787
a633fca0 788int cmd_grep(int argc, const char **argv, const char *prefix)
5010cb5f 789{
5010cb5f 790 int hit = 0;
0a93fb8a 791 int cached = 0, untracked = 0, opt_exclude = -1;
5acd64ed 792 int seen_dashdash = 0;
bbc09c22 793 int external_grep_allowed__ignored;
0af88c15 794 const char *show_in_pager = NULL, *default_pager = "dummy";
5010cb5f 795 struct grep_opt opt;
3cd47459 796 struct object_array list = OBJECT_ARRAY_INIT;
f34bbc15 797 struct pathspec pathspec;
183113a5 798 struct string_list path_list = STRING_LIST_INIT_NODUP;
5acd64ed 799 int i;
3e230fa1 800 int dummy;
ff38d1a9 801 int use_index = 1;
84befcd0 802 int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
131f3c96 803 int allow_revs;
cca2c172 804
3e230fa1 805 struct option options[] = {
d5d09d47 806 OPT_BOOL(0, "cached", &cached,
4b407bc5 807 N_("search in index instead of in the work tree")),
cbb08c2e 808 OPT_NEGBIT(0, "no-index", &use_index,
f63cf8c9 809 N_("find in contents not managed by git"), 1),
d5d09d47 810 OPT_BOOL(0, "untracked", &untracked,
4b407bc5 811 N_("search in both tracked and untracked files")),
0a93fb8a 812 OPT_SET_INT(0, "exclude-standard", &opt_exclude,
77fdb8a8 813 N_("ignore files specified via '.gitignore'"), 1),
0281e487 814 OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
4fb1c6aa 815 N_("recursively search in each submodule")),
3e230fa1 816 OPT_GROUP(""),
d5d09d47 817 OPT_BOOL('v', "invert-match", &opt.invert,
4b407bc5 818 N_("show non-matching lines")),
d5d09d47 819 OPT_BOOL('i', "ignore-case", &opt.ignore_case,
4b407bc5 820 N_("case insensitive matching")),
d5d09d47 821 OPT_BOOL('w', "word-regexp", &opt.word_regexp,
4b407bc5 822 N_("match patterns only at word boundaries")),
3e230fa1 823 OPT_SET_INT('a', "text", &opt.binary,
4b407bc5 824 N_("process binary files as text"), GREP_BINARY_TEXT),
3e230fa1 825 OPT_SET_INT('I', NULL, &opt.binary,
4b407bc5 826 N_("don't match patterns in binary files"),
3e230fa1 827 GREP_BINARY_NOMATCH),
335ec3bf
JK
828 OPT_BOOL(0, "textconv", &opt.allow_textconv,
829 N_("process binary files with textconv filters")),
0a09e5ed
RS
830 OPT_SET_INT('r', "recursive", &opt.max_depth,
831 N_("search in subdirectories (default)"), -1),
4b407bc5
NTND
832 { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
833 N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
a91f453f 834 NULL, 1 },
3e230fa1 835 OPT_GROUP(""),
84befcd0 836 OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
4b407bc5 837 N_("use extended POSIX regular expressions"),
84befcd0
S
838 GREP_PATTERN_TYPE_ERE),
839 OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
4b407bc5 840 N_("use basic POSIX regular expressions (default)"),
84befcd0
S
841 GREP_PATTERN_TYPE_BRE),
842 OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
4b407bc5 843 N_("interpret patterns as fixed strings"),
84befcd0
S
844 GREP_PATTERN_TYPE_FIXED),
845 OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
4b407bc5 846 N_("use Perl-compatible regular expressions"),
84befcd0 847 GREP_PATTERN_TYPE_PCRE),
3e230fa1 848 OPT_GROUP(""),
d5d09d47 849 OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
a449f27f 850 OPT_BOOL(0, "column", &opt.columnnum, N_("show column number of first match")),
4b407bc5
NTND
851 OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
852 OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
3e230fa1 853 OPT_NEGBIT(0, "full-name", &opt.relative,
4b407bc5 854 N_("show filenames relative to top directory"), 1),
d5d09d47 855 OPT_BOOL('l', "files-with-matches", &opt.name_only,
4b407bc5 856 N_("show only filenames instead of matching lines")),
d5d09d47 857 OPT_BOOL(0, "name-only", &opt.name_only,
4b407bc5 858 N_("synonym for --files-with-matches")),
d5d09d47 859 OPT_BOOL('L', "files-without-match",
3e230fa1 860 &opt.unmatch_name_only,
4b407bc5 861 N_("show only the names of files without match")),
caf2de33
NTND
862 OPT_BOOL_F('z', "null", &opt.null_following_name,
863 N_("print NUL after filenames"),
864 PARSE_OPT_NOCOMPLETE),
9d8db06e
TB
865 OPT_BOOL('o', "only-matching", &opt.only_matching,
866 N_("show only matching parts of a line")),
d5d09d47 867 OPT_BOOL('c', "count", &opt.count,
4b407bc5
NTND
868 N_("show the number of matches instead of matching lines")),
869 OPT__COLOR(&opt.color, N_("highlight matches")),
d5d09d47 870 OPT_BOOL(0, "break", &opt.file_break,
4b407bc5 871 N_("print empty line between matches from different files")),
d5d09d47 872 OPT_BOOL(0, "heading", &opt.heading,
4b407bc5 873 N_("show filename only once above matches from same file")),
3e230fa1 874 OPT_GROUP(""),
4b407bc5
NTND
875 OPT_CALLBACK('C', "context", &opt, N_("n"),
876 N_("show <n> context lines before and after matches"),
3e230fa1 877 context_callback),
317f63c2 878 OPT_INTEGER('B', "before-context", &opt.pre_context,
4b407bc5 879 N_("show <n> context lines before matches")),
317f63c2 880 OPT_INTEGER('A', "after-context", &opt.post_context,
4b407bc5 881 N_("show <n> context lines after matches")),
89f09dd3
VL
882 OPT_INTEGER(0, "threads", &num_threads,
883 N_("use <n> worker threads")),
4b407bc5 884 OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
3e230fa1 885 context_callback),
d5d09d47 886 OPT_BOOL('p', "show-function", &opt.funcname,
4b407bc5 887 N_("show a line with the function name before matches")),
d5d09d47 888 OPT_BOOL('W', "function-context", &opt.funcbody,
4b407bc5 889 N_("show the surrounding function")),
3e230fa1 890 OPT_GROUP(""),
4b407bc5
NTND
891 OPT_CALLBACK('f', NULL, &opt, N_("file"),
892 N_("read patterns from file"), file_callback),
893 { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
894 N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
3e230fa1 895 { OPTION_CALLBACK, 0, "and", &opt, NULL,
4b407bc5 896 N_("combine patterns specified with -e"),
3e230fa1 897 PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
d5d09d47 898 OPT_BOOL(0, "or", &dummy, ""),
3e230fa1
RS
899 { OPTION_CALLBACK, 0, "not", &opt, NULL, "",
900 PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
901 { OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
902 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
903 open_callback },
904 { OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
905 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
906 close_callback },
d52ee6e6 907 OPT__QUIET(&opt.status_only,
4b407bc5 908 N_("indicate hit with exit status without output")),
d5d09d47 909 OPT_BOOL(0, "all-match", &opt.all_match,
4b407bc5 910 N_("show only matches from files that match all patterns")),
3e4a67b4
NTND
911 OPT_SET_INT_F(0, "debug", &opt.debug,
912 N_("show parse tree for grep expression"),
913 1, PARSE_OPT_HIDDEN),
3e230fa1 914 OPT_GROUP(""),
0af88c15 915 { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
4b407bc5 916 N_("pager"), N_("show matching files in the pager"),
caf2de33
NTND
917 PARSE_OPT_OPTARG | PARSE_OPT_NOCOMPLETE,
918 NULL, (intptr_t)default_pager },
919 OPT_BOOL_F(0, "ext-grep", &external_grep_allowed__ignored,
920 N_("allow calling of grep(1) (ignored by this build)"),
921 PARSE_OPT_NOCOMPLETE),
3e230fa1
RS
922 OPT_END()
923 };
5010cb5f 924
38bbc2ea 925 init_grep_defaults(the_repository);
15fabd1b 926 git_config(grep_cmd_config, NULL);
38bbc2ea 927 grep_init(&opt, the_repository, prefix);
7e8f59d5 928
5010cb5f 929 /*
5acd64ed
JH
930 * If there is no -- then the paths must exist in the working
931 * tree. If there is no explicit pattern specified with -e or
932 * -f, we take the first unrecognized non option to be the
933 * pattern, but then what follows it must be zero or more
934 * valid refs up to the -- (if exists), and then existing
935 * paths. If there is an explicit pattern, then the first
82e5a82f 936 * unrecognized non option is the beginning of the refs list
5acd64ed 937 * that continues up to the -- (if exists), and then paths.
5010cb5f 938 */
37782920 939 argc = parse_options(argc, argv, prefix, options, grep_usage,
3e230fa1 940 PARSE_OPT_KEEP_DASHDASH |
44415499 941 PARSE_OPT_STOP_AT_NON_OPTION);
c5c31d33 942 grep_commit_pattern_type(pattern_type_arg, &opt);
3e230fa1 943
ecd9ba61
TG
944 if (use_index && !startup_info->have_repository) {
945 int fallback = 0;
946 git_config_get_bool("grep.fallbacktonoindex", &fallback);
947 if (fallback)
948 use_index = 0;
949 else
950 /* die the same way as if we did it at the beginning */
951 setup_git_directory();
952 }
59332d13 953
1123c67c
JK
954 /*
955 * skip a -- separator; we know it cannot be
956 * separating revisions from pathnames if
957 * we haven't even had any patterns yet
958 */
959 if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
960 argv++;
961 argc--;
962 }
963
3e230fa1
RS
964 /* First unrecognized non-option token */
965 if (argc > 0 && !opt.pattern_list) {
966 append_grep_pattern(&opt, argv[0], "command line", 0,
967 GREP_PATTERN);
968 argv++;
969 argc--;
5010cb5f 970 }
5acd64ed 971
0af88c15
JS
972 if (show_in_pager == default_pager)
973 show_in_pager = git_pager(1);
678e484b 974 if (show_in_pager) {
e7b082a4 975 opt.color = 0;
0af88c15
JS
976 opt.name_only = 1;
977 opt.null_following_name = 1;
978 opt.output_priv = &path_list;
979 opt.output = append_path;
0c72cead 980 string_list_append(&path_list, show_in_pager);
678e484b
JS
981 }
982
f9b9faf6 983 if (!opt.pattern_list)
1a07e59c 984 die(_("no pattern given"));
5b594f45 985
9d8db06e
TB
986 /* --only-matching has no effect with --invert. */
987 if (opt.invert)
988 opt.only_matching = 0;
989
b5b81136
JK
990 /*
991 * We have to find "--" in a separate pass, because its presence
992 * influences how we will parse arguments that come before it.
993 */
994 for (i = 0; i < argc; i++) {
995 if (!strcmp(argv[i], "--")) {
996 seen_dashdash = 1;
997 break;
998 }
999 }
1000
1001 /*
1002 * Resolve any rev arguments. If we have a dashdash, then everything up
1003 * to it must resolve as a rev. If not, then we stop at the first
1004 * non-rev and assume everything else is a path.
1005 */
131f3c96 1006 allow_revs = use_index && !untracked;
3e230fa1 1007 for (i = 0; i < argc; i++) {
5acd64ed 1008 const char *arg = argv[i];
1db11086 1009 struct object_id oid;
afa15f3c 1010 struct object_context oc;
20d6421c
JK
1011 struct object *object;
1012
dca3b5f5
JT
1013 if (!strcmp(arg, "--")) {
1014 i++;
dca3b5f5
JT
1015 break;
1016 }
20d6421c 1017
131f3c96 1018 if (!allow_revs) {
d0ffc069 1019 if (seen_dashdash)
131f3c96 1020 die(_("--no-index or --untracked cannot be used with revs"));
d0ffc069
JK
1021 break;
1022 }
1023
3a7a698e
NTND
1024 if (get_oid_with_context(the_repository, arg,
1025 GET_OID_RECORD_PATH,
e82caf38 1026 &oid, &oc)) {
b5b81136
JK
1027 if (seen_dashdash)
1028 die(_("unable to resolve revision: %s"), arg);
20d6421c 1029 break;
b5b81136 1030 }
20d6421c 1031
c251c83d 1032 object = parse_object_or_die(&oid, arg);
20d6421c
JK
1033 if (!seen_dashdash)
1034 verify_non_filename(prefix, arg);
1035 add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
dc944b65 1036 free(oc.path);
1362671f 1037 }
5acd64ed 1038
b5b81136
JK
1039 /*
1040 * Anything left over is presumed to be a path. But in the non-dashdash
1041 * "do what I mean" case, we verify and complain when that isn't true.
1042 */
a0fe2b0d
JK
1043 if (!seen_dashdash) {
1044 int j;
1045 for (j = i; j < argc; j++)
131f3c96 1046 verify_filename(prefix, argv[j], j == i && allow_revs);
a0fe2b0d
JK
1047 }
1048
1049 parse_pathspec(&pathspec, 0,
1050 PATHSPEC_PREFER_CWD |
1051 (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
1052 prefix, argv + i);
1053 pathspec.max_depth = opt.max_depth;
1054 pathspec.recursive = 1;
eef3df5a 1055 pathspec.recurse_submodules = !!recurse_submodules;
a0fe2b0d 1056
fd6263fb
NTND
1057 if (list.nr || cached || show_in_pager) {
1058 if (num_threads > 1)
1059 warning(_("invalid option combination, ignoring --threads"));
1060 num_threads = 1;
1061 } else if (!HAVE_THREADS && num_threads > 1) {
d1edee4a 1062 warning(_("no threads support, ignoring --threads"));
fd6263fb
NTND
1063 num_threads = 1;
1064 } else if (num_threads < 0)
1065 die(_("invalid number of threads specified (%d)"), num_threads);
1066 else if (num_threads == 0)
1067 num_threads = HAVE_THREADS ? GREP_NUM_THREADS_DEFAULT : 1;
53b8d931 1068
fd6263fb
NTND
1069 if (num_threads > 1) {
1070 if (!HAVE_THREADS)
1071 BUG("Somebody got num_threads calculation wrong!");
1072 if (!(opt.name_only || opt.unmatch_name_only || opt.count)
1073 && (opt.pre_context || opt.post_context ||
1074 opt.file_break || opt.funcbody))
1075 skip_first_line = 1;
1076 start_threads(&opt);
4002e87c 1077 } else {
6d423dd5
ÆAB
1078 /*
1079 * The compiled patterns on the main path are only
1080 * used when not using threading. Otherwise
fd6263fb 1081 * start_threads() above calls compile_grep_patterns()
6d423dd5
ÆAB
1082 * for each thread.
1083 */
1084 compile_grep_patterns(&opt);
53b8d931 1085 }
53b8d931 1086
678e484b 1087 if (show_in_pager && (cached || list.nr))
e4fe4ba5 1088 die(_("--open-files-in-pager only works on the worktree"));
678e484b
JS
1089
1090 if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
1091 const char *pager = path_list.items[0].string;
1092 int len = strlen(pager);
1093
1094 if (len > 4 && is_dir_sep(pager[len - 5]))
1095 pager += len - 4;
1096
f7febbea
JS
1097 if (opt.ignore_case && !strcmp("less", pager))
1098 string_list_append(&path_list, "-I");
1099
678e484b
JS
1100 if (!strcmp("less", pager) || !strcmp("vi", pager)) {
1101 struct strbuf buf = STRBUF_INIT;
1102 strbuf_addf(&buf, "+/%s%s",
1103 strcmp("less", pager) ? "" : "*",
1104 opt.pattern_list->pattern);
0c72cead 1105 string_list_append(&path_list, buf.buf);
678e484b
JS
1106 strbuf_detach(&buf, NULL);
1107 }
1108 }
1109
74ed4371 1110 if (recurse_submodules && (!use_index || untracked))
1a07e59c 1111 die(_("option not supported with --recurse-submodules"));
0281e487 1112
c2048f0b 1113 if (!show_in_pager && !opt.status_only)
678e484b
JS
1114 setup_pager();
1115
0a93fb8a 1116 if (!use_index && (untracked || cached))
1a07e59c 1117 die(_("--cached or --untracked cannot be used with --no-index"));
678e484b 1118
0a93fb8a 1119 if (!use_index || untracked) {
0a93fb8a 1120 int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
85975c0c 1121 hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
dbfae86a 1122 } else if (0 <= opt_exclude) {
1a07e59c 1123 die(_("--[no-]exclude-standard cannot be used for tracked contents"));
685359cf 1124 } else if (!list.nr) {
6577f542
NTND
1125 if (!cached)
1126 setup_work_tree();
5b594f45 1127
dba093dd 1128 hit = grep_cache(&opt, &pathspec, cached);
685359cf
JS
1129 } else {
1130 if (cached)
1a07e59c 1131 die(_("both --cached and trees are given"));
f9ee2fcd 1132
6856077a 1133 hit = grep_objects(&opt, &pathspec, &list);
5010cb5f 1134 }
5b594f45 1135
fd6263fb 1136 if (num_threads > 1)
5b594f45 1137 hit |= wait_all();
678e484b
JS
1138 if (hit && show_in_pager)
1139 run_pager(&opt, prefix);
7861fa07 1140 clear_pathspec(&pathspec);
b48fb5b6 1141 free_grep_patterns(&opt);
5010cb5f
JH
1142 return !hit;
1143}