object: convert parse_object* to take struct object_id
[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"
7#include "blob.h"
8#include "tree.h"
9#include "commit.h"
10#include "tag.h"
1362671f 11#include "tree-walk.h"
5010cb5f 12#include "builtin.h"
3e230fa1 13#include "parse-options.h"
678e484b
JS
14#include "string-list.h"
15#include "run-command.h"
60ecac98 16#include "userdiff.h"
83b5d2f5 17#include "grep.h"
493b7a08 18#include "quote.h"
59332d13 19#include "dir.h"
64acde94 20#include "pathspec.h"
0281e487 21#include "submodule.h"
74ed4371 22#include "submodule-config.h"
5b594f45 23
3e230fa1 24static char const * const grep_usage[] = {
9c9b4f2f 25 N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"),
3e230fa1
RS
26 NULL
27};
28
0281e487
BW
29static const char *super_prefix;
30static int recurse_submodules;
31static struct argv_array submodule_options = ARGV_ARRAY_INIT;
74ed4371 32static const char *parent_basename;
0281e487
BW
33
34static int grep_submodule_launch(struct grep_opt *opt,
35 const struct grep_source *gs);
36
89f09dd3
VL
37#define GREP_NUM_THREADS_DEFAULT 8
38static int num_threads;
5b594f45
FK
39
40#ifndef NO_PTHREADS
89f09dd3 41static pthread_t *threads;
5b594f45 42
5b594f45
FK
43/* We use one producer thread and THREADS consumer
44 * threads. The producer adds struct work_items to 'todo' and the
45 * consumers pick work items from the same array.
46 */
9cba13ca 47struct work_item {
8f24a632 48 struct grep_source source;
5b594f45
FK
49 char done;
50 struct strbuf out;
51};
52
53/* In the range [todo_done, todo_start) in 'todo' we have work_items
54 * that have been or are processed by a consumer thread. We haven't
55 * written the result for these to stdout yet.
56 *
57 * The work_items in [todo_start, todo_end) are waiting to be picked
58 * up by a consumer thread.
59 *
60 * The ranges are modulo TODO_SIZE.
61 */
62#define TODO_SIZE 128
63static struct work_item todo[TODO_SIZE];
64static int todo_start;
65static int todo_end;
66static int todo_done;
67
68/* Has all work items been added? */
69static int all_work_added;
70
71/* This lock protects all the variables above. */
72static pthread_mutex_t grep_mutex;
73
1487a12b
JH
74static inline void grep_lock(void)
75{
89f09dd3 76 if (num_threads)
1487a12b
JH
77 pthread_mutex_lock(&grep_mutex);
78}
79
80static inline void grep_unlock(void)
81{
89f09dd3 82 if (num_threads)
1487a12b
JH
83 pthread_mutex_unlock(&grep_mutex);
84}
85
5b594f45
FK
86/* Signalled when a new work_item is added to todo. */
87static pthread_cond_t cond_add;
88
89/* Signalled when the result from one work_item is written to
90 * stdout.
91 */
92static pthread_cond_t cond_write;
93
94/* Signalled when we are finished with everything. */
95static pthread_cond_t cond_result;
96
08303c36 97static int skip_first_line;
431d6e7b 98
9dd5245c 99static void add_work(struct grep_opt *opt, enum grep_source_type type,
55c61688 100 const char *name, const char *path, const void *id)
5b594f45
FK
101{
102 grep_lock();
103
104 while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
105 pthread_cond_wait(&cond_write, &grep_mutex);
106 }
107
55c61688 108 grep_source_init(&todo[todo_end].source, type, name, path, id);
9dd5245c
JK
109 if (opt->binary != GREP_BINARY_TEXT)
110 grep_source_load_driver(&todo[todo_end].source);
5b594f45
FK
111 todo[todo_end].done = 0;
112 strbuf_reset(&todo[todo_end].out);
113 todo_end = (todo_end + 1) % ARRAY_SIZE(todo);
114
115 pthread_cond_signal(&cond_add);
116 grep_unlock();
117}
118
119static struct work_item *get_work(void)
120{
121 struct work_item *ret;
122
123 grep_lock();
124 while (todo_start == todo_end && !all_work_added) {
125 pthread_cond_wait(&cond_add, &grep_mutex);
126 }
127
128 if (todo_start == todo_end && all_work_added) {
129 ret = NULL;
130 } else {
131 ret = &todo[todo_start];
132 todo_start = (todo_start + 1) % ARRAY_SIZE(todo);
133 }
134 grep_unlock();
135 return ret;
136}
137
5b594f45
FK
138static void work_done(struct work_item *w)
139{
140 int old_done;
141
142 grep_lock();
143 w->done = 1;
144 old_done = todo_done;
145 for(; todo[todo_done].done && todo_done != todo_start;
146 todo_done = (todo_done+1) % ARRAY_SIZE(todo)) {
147 w = &todo[todo_done];
431d6e7b 148 if (w->out.len) {
08303c36
RS
149 const char *p = w->out.buf;
150 size_t len = w->out.len;
151
152 /* Skip the leading hunk mark of the first file. */
153 if (skip_first_line) {
154 while (len) {
155 len--;
156 if (*p++ == '\n')
157 break;
158 }
159 skip_first_line = 0;
160 }
161
162 write_or_die(1, p, len);
431d6e7b 163 }
8f24a632 164 grep_source_clear(&w->source);
5b594f45
FK
165 }
166
167 if (old_done != todo_done)
168 pthread_cond_signal(&cond_write);
169
170 if (all_work_added && todo_done == todo_end)
171 pthread_cond_signal(&cond_result);
172
173 grep_unlock();
174}
175
176static void *run(void *arg)
177{
178 int hit = 0;
179 struct grep_opt *opt = arg;
180
181 while (1) {
182 struct work_item *w = get_work();
183 if (!w)
184 break;
185
186 opt->output_priv = w;
0281e487
BW
187 if (w->source.type == GREP_SOURCE_SUBMODULE)
188 hit |= grep_submodule_launch(opt, &w->source);
189 else
190 hit |= grep_source(opt, &w->source);
8f24a632 191 grep_source_clear_data(&w->source);
5b594f45
FK
192 work_done(w);
193 }
bfac23d9
DM
194 free_grep_patterns(arg);
195 free(arg);
5b594f45
FK
196
197 return (void*) (intptr_t) hit;
198}
199
200static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size)
201{
202 struct work_item *w = opt->output_priv;
203 strbuf_add(&w->out, buf, size);
204}
205
206static void start_threads(struct grep_opt *opt)
207{
208 int i;
209
210 pthread_mutex_init(&grep_mutex, NULL);
b3aeb285 211 pthread_mutex_init(&grep_read_mutex, NULL);
0579f91d 212 pthread_mutex_init(&grep_attr_mutex, NULL);
5b594f45
FK
213 pthread_cond_init(&cond_add, NULL);
214 pthread_cond_init(&cond_write, NULL);
215 pthread_cond_init(&cond_result, NULL);
78db6ea9 216 grep_use_locks = 1;
5b594f45
FK
217
218 for (i = 0; i < ARRAY_SIZE(todo); i++) {
219 strbuf_init(&todo[i].out, 0);
220 }
221
89f09dd3
VL
222 threads = xcalloc(num_threads, sizeof(*threads));
223 for (i = 0; i < num_threads; i++) {
5b594f45
FK
224 int err;
225 struct grep_opt *o = grep_opt_dup(opt);
226 o->output = strbuf_out;
208f5aa4 227 o->debug = 0;
5b594f45
FK
228 compile_grep_patterns(o);
229 err = pthread_create(&threads[i], NULL, run, o);
230
231 if (err)
2fc5f9f1 232 die(_("grep: failed to create thread: %s"),
5b594f45
FK
233 strerror(err));
234 }
235}
236
237static int wait_all(void)
238{
239 int hit = 0;
240 int i;
241
242 grep_lock();
243 all_work_added = 1;
244
245 /* Wait until all work is done. */
246 while (todo_done != todo_end)
247 pthread_cond_wait(&cond_result, &grep_mutex);
248
249 /* Wake up all the consumer threads so they can see that there
250 * is no more work to do.
251 */
252 pthread_cond_broadcast(&cond_add);
253 grep_unlock();
254
89f09dd3 255 for (i = 0; i < num_threads; i++) {
5b594f45
FK
256 void *h;
257 pthread_join(threads[i], &h);
258 hit |= (int) (intptr_t) h;
259 }
260
89f09dd3
VL
261 free(threads);
262
5b594f45 263 pthread_mutex_destroy(&grep_mutex);
b3aeb285 264 pthread_mutex_destroy(&grep_read_mutex);
0579f91d 265 pthread_mutex_destroy(&grep_attr_mutex);
5b594f45
FK
266 pthread_cond_destroy(&cond_add);
267 pthread_cond_destroy(&cond_write);
268 pthread_cond_destroy(&cond_result);
78db6ea9 269 grep_use_locks = 0;
5b594f45
FK
270
271 return hit;
272}
273#else /* !NO_PTHREADS */
5b594f45
FK
274
275static int wait_all(void)
276{
277 return 0;
278}
279#endif
280
15fabd1b
JH
281static int grep_cmd_config(const char *var, const char *value, void *cb)
282{
283 int st = grep_config(var, value, cb);
284 if (git_color_default_config(var, value, cb) < 0)
285 st = -1;
89f09dd3
VL
286
287 if (!strcmp(var, "grep.threads")) {
288 num_threads = git_config_int(var, value);
289 if (num_threads < 0)
290 die(_("invalid number of threads specified (%d) for %s"),
291 num_threads, var);
292 }
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();
1db11086 302 data = read_sha1_file(oid->hash, 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;
5b594f45 312
be80a239 313 if (super_prefix) {
0281e487
BW
314 strbuf_add(&pathbuf, filename, tree_name_len);
315 strbuf_addstr(&pathbuf, super_prefix);
316 strbuf_addstr(&pathbuf, filename + tree_name_len);
5b594f45
FK
317 } else {
318 strbuf_addstr(&pathbuf, filename);
319 }
320
be80a239
BW
321 if (opt->relative && opt->prefix_length) {
322 char *name = strbuf_detach(&pathbuf, NULL);
323 quote_path_relative(name + tree_name_len, opt->prefix, &pathbuf);
324 strbuf_insert(&pathbuf, 0, name, tree_name_len);
325 free(name);
326 }
327
5b594f45 328#ifndef NO_PTHREADS
89f09dd3 329 if (num_threads) {
1db11086 330 add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, path, oid);
8f24a632 331 strbuf_release(&pathbuf);
5b594f45
FK
332 return 0;
333 } else
334#endif
335 {
8f24a632 336 struct grep_source gs;
5b594f45 337 int hit;
5010cb5f 338
1db11086 339 grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, path, oid);
8f24a632
JK
340 strbuf_release(&pathbuf);
341 hit = grep_source(opt, &gs);
dc49cd76 342
8f24a632
JK
343 grep_source_clear(&gs);
344 return hit;
5010cb5f 345 }
5b594f45
FK
346}
347
348static int grep_file(struct grep_opt *opt, const char *filename)
349{
350 struct strbuf buf = STRBUF_INIT;
5b594f45 351
be80a239
BW
352 if (super_prefix)
353 strbuf_addstr(&buf, super_prefix);
354 strbuf_addstr(&buf, filename);
355
0281e487 356 if (opt->relative && opt->prefix_length) {
be80a239
BW
357 char *name = strbuf_detach(&buf, NULL);
358 quote_path_relative(name, opt->prefix, &buf);
359 free(name);
0281e487 360 }
5b594f45
FK
361
362#ifndef NO_PTHREADS
89f09dd3 363 if (num_threads) {
55c61688 364 add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename);
8f24a632 365 strbuf_release(&buf);
5b594f45
FK
366 return 0;
367 } else
368#endif
369 {
8f24a632 370 struct grep_source gs;
5b594f45 371 int hit;
5b594f45 372
55c61688 373 grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
8f24a632
JK
374 strbuf_release(&buf);
375 hit = grep_source(opt, &gs);
376
377 grep_source_clear(&gs);
5b594f45
FK
378 return hit;
379 }
5010cb5f
JH
380}
381
678e484b
JS
382static void append_path(struct grep_opt *opt, const void *data, size_t len)
383{
384 struct string_list *path_list = opt->output_priv;
385
386 if (len == 1 && *(const char *)data == '\0')
387 return;
0c72cead 388 string_list_append(path_list, xstrndup(data, len));
678e484b
JS
389}
390
391static void run_pager(struct grep_opt *opt, const char *prefix)
392{
393 struct string_list *path_list = opt->output_priv;
850d2fec 394 struct child_process child = CHILD_PROCESS_INIT;
678e484b
JS
395 int i, status;
396
397 for (i = 0; i < path_list->nr; i++)
850d2fec
JK
398 argv_array_push(&child.args, path_list->items[i].string);
399 child.dir = prefix;
400 child.use_shell = 1;
678e484b 401
850d2fec 402 status = run_command(&child);
678e484b
JS
403 if (status)
404 exit(status);
678e484b
JS
405}
406
0281e487 407static void compile_submodule_options(const struct grep_opt *opt,
be80a239 408 const char **argv,
0281e487
BW
409 int cached, int untracked,
410 int opt_exclude, int use_index,
411 int pattern_type_arg)
412{
413 struct grep_pat *pattern;
0281e487
BW
414
415 if (recurse_submodules)
416 argv_array_push(&submodule_options, "--recurse-submodules");
417
418 if (cached)
419 argv_array_push(&submodule_options, "--cached");
420 if (!use_index)
421 argv_array_push(&submodule_options, "--no-index");
422 if (untracked)
423 argv_array_push(&submodule_options, "--untracked");
424 if (opt_exclude > 0)
425 argv_array_push(&submodule_options, "--exclude-standard");
426
427 if (opt->invert)
428 argv_array_push(&submodule_options, "-v");
429 if (opt->ignore_case)
430 argv_array_push(&submodule_options, "-i");
431 if (opt->word_regexp)
432 argv_array_push(&submodule_options, "-w");
433 switch (opt->binary) {
434 case GREP_BINARY_NOMATCH:
435 argv_array_push(&submodule_options, "-I");
436 break;
437 case GREP_BINARY_TEXT:
438 argv_array_push(&submodule_options, "-a");
439 break;
440 default:
441 break;
442 }
443 if (opt->allow_textconv)
444 argv_array_push(&submodule_options, "--textconv");
445 if (opt->max_depth != -1)
446 argv_array_pushf(&submodule_options, "--max-depth=%d",
447 opt->max_depth);
448 if (opt->linenum)
449 argv_array_push(&submodule_options, "-n");
450 if (!opt->pathname)
451 argv_array_push(&submodule_options, "-h");
452 if (!opt->relative)
453 argv_array_push(&submodule_options, "--full-name");
454 if (opt->name_only)
455 argv_array_push(&submodule_options, "-l");
456 if (opt->unmatch_name_only)
457 argv_array_push(&submodule_options, "-L");
458 if (opt->null_following_name)
459 argv_array_push(&submodule_options, "-z");
460 if (opt->count)
461 argv_array_push(&submodule_options, "-c");
462 if (opt->file_break)
463 argv_array_push(&submodule_options, "--break");
464 if (opt->heading)
465 argv_array_push(&submodule_options, "--heading");
466 if (opt->pre_context)
467 argv_array_pushf(&submodule_options, "--before-context=%d",
468 opt->pre_context);
469 if (opt->post_context)
470 argv_array_pushf(&submodule_options, "--after-context=%d",
471 opt->post_context);
472 if (opt->funcname)
473 argv_array_push(&submodule_options, "-p");
474 if (opt->funcbody)
475 argv_array_push(&submodule_options, "-W");
476 if (opt->all_match)
477 argv_array_push(&submodule_options, "--all-match");
478 if (opt->debug)
479 argv_array_push(&submodule_options, "--debug");
480 if (opt->status_only)
481 argv_array_push(&submodule_options, "-q");
482
483 switch (pattern_type_arg) {
484 case GREP_PATTERN_TYPE_BRE:
485 argv_array_push(&submodule_options, "-G");
486 break;
487 case GREP_PATTERN_TYPE_ERE:
488 argv_array_push(&submodule_options, "-E");
489 break;
490 case GREP_PATTERN_TYPE_FIXED:
491 argv_array_push(&submodule_options, "-F");
492 break;
493 case GREP_PATTERN_TYPE_PCRE:
494 argv_array_push(&submodule_options, "-P");
495 break;
496 case GREP_PATTERN_TYPE_UNSPECIFIED:
497 break;
498 }
499
500 for (pattern = opt->pattern_list; pattern != NULL;
501 pattern = pattern->next) {
502 switch (pattern->token) {
503 case GREP_PATTERN:
504 argv_array_pushf(&submodule_options, "-e%s",
505 pattern->pattern);
506 break;
507 case GREP_AND:
508 case GREP_OPEN_PAREN:
509 case GREP_CLOSE_PAREN:
510 case GREP_NOT:
511 case GREP_OR:
512 argv_array_push(&submodule_options, pattern->pattern);
513 break;
514 /* BODY and HEAD are not used by git-grep */
515 case GREP_PATTERN_BODY:
516 case GREP_PATTERN_HEAD:
517 break;
518 }
519 }
520
521 /*
522 * Limit number of threads for child process to use.
523 * This is to prevent potential fork-bomb behavior of git-grep as each
524 * submodule process has its own thread pool.
525 */
526 argv_array_pushf(&submodule_options, "--threads=%d",
527 (num_threads + 1) / 2);
528
529 /* Add Pathspecs */
530 argv_array_push(&submodule_options, "--");
be80a239
BW
531 for (; *argv; argv++)
532 argv_array_push(&submodule_options, *argv);
0281e487
BW
533}
534
535/*
536 * Launch child process to grep contents of a submodule
537 */
538static int grep_submodule_launch(struct grep_opt *opt,
539 const struct grep_source *gs)
540{
541 struct child_process cp = CHILD_PROCESS_INIT;
542 int status, i;
74ed4371
BW
543 const char *end_of_base;
544 const char *name;
2225e1ea 545 struct strbuf child_output = STRBUF_INIT;
0281e487 546
74ed4371
BW
547 end_of_base = strchr(gs->name, ':');
548 if (gs->identifier && end_of_base)
549 name = end_of_base + 1;
550 else
551 name = gs->name;
552
0281e487 553 prepare_submodule_repo_env(&cp.env_array);
e6fac7f3 554 argv_array_push(&cp.env_array, GIT_DIR_ENVIRONMENT);
0281e487 555
be80a239
BW
556 if (opt->relative && opt->prefix_length)
557 argv_array_pushf(&cp.env_array, "%s=%s",
558 GIT_TOPLEVEL_PREFIX_ENVIRONMENT,
559 opt->prefix);
560
0281e487
BW
561 /* Add super prefix */
562 argv_array_pushf(&cp.args, "--super-prefix=%s%s/",
563 super_prefix ? super_prefix : "",
74ed4371 564 name);
0281e487
BW
565 argv_array_push(&cp.args, "grep");
566
74ed4371
BW
567 /*
568 * Add basename of parent project
569 * When performing grep on a tree object the filename is prefixed
570 * with the object's name: 'tree-name:filename'. In order to
571 * provide uniformity of output we want to pass the name of the
572 * parent project's object name to the submodule so the submodule can
573 * prefix its output with the parent's name and not its own SHA1.
574 */
575 if (gs->identifier && end_of_base)
576 argv_array_pushf(&cp.args, "--parent-basename=%.*s",
577 (int) (end_of_base - gs->name),
578 gs->name);
579
0281e487 580 /* Add options */
74ed4371
BW
581 for (i = 0; i < submodule_options.argc; i++) {
582 /*
583 * If there is a tree identifier for the submodule, add the
584 * rev after adding the submodule options but before the
585 * pathspecs. To do this we listen for the '--' and insert the
586 * sha1 before pushing the '--' onto the child process argv
587 * array.
588 */
589 if (gs->identifier &&
590 !strcmp("--", submodule_options.argv[i])) {
591 argv_array_push(&cp.args, sha1_to_hex(gs->identifier));
592 }
593
0281e487 594 argv_array_push(&cp.args, submodule_options.argv[i]);
74ed4371 595 }
0281e487
BW
596
597 cp.git_cmd = 1;
598 cp.dir = gs->path;
599
600 /*
601 * Capture output to output buffer and check the return code from the
602 * child process. A '0' indicates a hit, a '1' indicates no hit and
603 * anything else is an error.
604 */
2225e1ea 605 status = capture_command(&cp, &child_output, 0);
0281e487
BW
606 if (status && (status != 1)) {
607 /* flush the buffer */
2225e1ea 608 write_or_die(1, child_output.buf, child_output.len);
0281e487
BW
609 die("process for submodule '%s' failed with exit code: %d",
610 gs->name, status);
611 }
612
2225e1ea
BW
613 opt->output(opt, child_output.buf, child_output.len);
614 strbuf_release(&child_output);
0281e487
BW
615 /* invert the return code to make a hit equal to 1 */
616 return !status;
617}
618
619/*
620 * Prep grep structures for a submodule grep
621 * sha1: the sha1 of the submodule or NULL if using the working tree
622 * filename: name of the submodule including tree name of parent
623 * path: location of the submodule
624 */
625static int grep_submodule(struct grep_opt *opt, const unsigned char *sha1,
626 const char *filename, const char *path)
627{
628 if (!is_submodule_initialized(path))
629 return 0;
15cdc647 630 if (!is_submodule_populated_gently(path, NULL)) {
e6fac7f3
BW
631 /*
632 * If searching history, check for the presense of the
633 * submodule's gitdir before skipping the submodule.
634 */
635 if (sha1) {
636 const struct submodule *sub =
637 submodule_from_path(null_sha1, path);
638 if (sub)
639 path = git_path("modules/%s", sub->name);
640
641 if (!(is_directory(path) && is_git_directory(path)))
642 return 0;
643 } else {
644 return 0;
645 }
646 }
0281e487
BW
647
648#ifndef NO_PTHREADS
649 if (num_threads) {
650 add_work(opt, GREP_SOURCE_SUBMODULE, filename, path, sha1);
651 return 0;
652 } else
653#endif
654 {
2225e1ea 655 struct grep_source gs;
0281e487
BW
656 int hit;
657
2225e1ea 658 grep_source_init(&gs, GREP_SOURCE_SUBMODULE,
0281e487 659 filename, path, sha1);
2225e1ea 660 hit = grep_submodule_launch(opt, &gs);
0281e487 661
2225e1ea 662 grep_source_clear(&gs);
0281e487
BW
663 return hit;
664 }
665}
666
667static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec,
668 int cached)
5010cb5f
JH
669{
670 int hit = 0;
671 int nr;
0281e487
BW
672 struct strbuf name = STRBUF_INIT;
673 int name_base_len = 0;
674 if (super_prefix) {
675 name_base_len = strlen(super_prefix);
676 strbuf_addstr(&name, super_prefix);
677 }
678
5010cb5f
JH
679 read_cache();
680
681 for (nr = 0; nr < active_nr; nr++) {
9c5e6c80 682 const struct cache_entry *ce = active_cache[nr];
0281e487
BW
683 strbuf_setlen(&name, name_base_len);
684 strbuf_addstr(&name, ce->name);
685
686 if (S_ISREG(ce->ce_mode) &&
687 match_pathspec(pathspec, name.buf, name.len, 0, NULL,
688 S_ISDIR(ce->ce_mode) ||
689 S_ISGITLINK(ce->ce_mode))) {
690 /*
691 * If CE_VALID is on, we assume worktree file and its
692 * cache entry are identical, even if worktree file has
693 * been modified, so use cache version instead
694 */
695 if (cached || (ce->ce_flags & CE_VALID) ||
696 ce_skip_worktree(ce)) {
697 if (ce_stage(ce) || ce_intent_to_add(ce))
698 continue;
1db11086 699 hit |= grep_oid(opt, &ce->oid, ce->name,
0281e487
BW
700 0, ce->name);
701 } else {
702 hit |= grep_file(opt, ce->name);
703 }
704 } else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
705 submodule_path_match(pathspec, name.buf, NULL)) {
706 hit |= grep_submodule(opt, NULL, ce->name, ce->name);
707 } else {
5010cb5f 708 continue;
36f2587f 709 }
0281e487 710
36f2587f
JH
711 if (ce_stage(ce)) {
712 do {
713 nr++;
714 } while (nr < active_nr &&
715 !strcmp(ce->name, active_cache[nr]->name));
716 nr--; /* compensate for loop control */
717 }
c8610a2e
JH
718 if (hit && opt->status_only)
719 break;
5010cb5f 720 }
0281e487
BW
721
722 strbuf_release(&name);
5010cb5f
JH
723 return hit;
724}
725
f34bbc15 726static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
55c61688
NTND
727 struct tree_desc *tree, struct strbuf *base, int tn_len,
728 int check_attr)
5010cb5f 729{
d688cf07
NTND
730 int hit = 0;
731 enum interesting match = entry_not_interesting;
4c068a98 732 struct name_entry entry;
e5e062b6 733 int old_baselen = base->len;
74ed4371
BW
734 struct strbuf name = STRBUF_INIT;
735 int name_base_len = 0;
736 if (super_prefix) {
737 strbuf_addstr(&name, super_prefix);
738 name_base_len = name.len;
739 }
5010cb5f 740
4c068a98 741 while (tree_entry(tree, &entry)) {
0de16337 742 int te_len = tree_entry_len(&entry);
e5e062b6 743
d688cf07 744 if (match != all_entries_interesting) {
74ed4371
BW
745 strbuf_addstr(&name, base->buf + tn_len);
746 match = tree_entry_interesting(&entry, &name,
747 0, pathspec);
748 strbuf_setlen(&name, name_base_len);
749
d688cf07 750 if (match == all_entries_not_interesting)
97d0b74a 751 break;
d688cf07 752 if (match == entry_not_interesting)
1376e507
NTND
753 continue;
754 }
5010cb5f 755
1376e507 756 strbuf_add(base, entry.path, te_len);
e0eb889f 757
1376e507 758 if (S_ISREG(entry.mode)) {
1db11086 759 hit |= grep_oid(opt, entry.oid, base->buf, tn_len,
55c61688 760 check_attr ? base->buf + tn_len : NULL);
74ed4371 761 } else if (S_ISDIR(entry.mode)) {
21666f1a 762 enum object_type type;
5010cb5f
JH
763 struct tree_desc sub;
764 void *data;
6fda5e51
LT
765 unsigned long size;
766
1db11086 767 data = lock_and_read_oid_file(entry.oid, &type, &size);
5010cb5f 768 if (!data)
2fc5f9f1 769 die(_("unable to read tree (%s)"),
7d924c91 770 oid_to_hex(entry.oid));
1376e507
NTND
771
772 strbuf_addch(base, '/');
6fda5e51 773 init_tree_desc(&sub, data, size);
55c61688
NTND
774 hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
775 check_attr);
5010cb5f 776 free(data);
74ed4371
BW
777 } else if (recurse_submodules && S_ISGITLINK(entry.mode)) {
778 hit |= grep_submodule(opt, entry.oid->hash, base->buf,
779 base->buf + tn_len);
5010cb5f 780 }
74ed4371 781
e5e062b6
NTND
782 strbuf_setlen(base, old_baselen);
783
c8610a2e
JH
784 if (hit && opt->status_only)
785 break;
5010cb5f 786 }
74ed4371
BW
787
788 strbuf_release(&name);
5010cb5f
JH
789 return hit;
790}
791
f34bbc15 792static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
9e0c3c4f 793 struct object *obj, const char *name, const char *path)
5010cb5f 794{
1974632c 795 if (obj->type == OBJ_BLOB)
1db11086 796 return grep_oid(opt, &obj->oid, name, 0, path);
1974632c 797 if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
5010cb5f
JH
798 struct tree_desc tree;
799 void *data;
6fda5e51 800 unsigned long size;
e5e062b6
NTND
801 struct strbuf base;
802 int hit, len;
803
b3aeb285 804 grep_read_lock();
f2fd0760 805 data = read_object_with_reference(obj->oid.hash, tree_type,
6fda5e51 806 &size, NULL);
b3aeb285 807 grep_read_unlock();
8cb5775b 808
5010cb5f 809 if (!data)
f2fd0760 810 die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
e5e062b6 811
74ed4371
BW
812 /* Use parent's name as base when recursing submodules */
813 if (recurse_submodules && parent_basename)
814 name = parent_basename;
815
e5e062b6
NTND
816 len = name ? strlen(name) : 0;
817 strbuf_init(&base, PATH_MAX + len + 1);
818 if (len) {
819 strbuf_add(&base, name, len);
820 strbuf_addch(&base, ':');
821 }
6fda5e51 822 init_tree_desc(&tree, data, size);
55c61688
NTND
823 hit = grep_tree(opt, pathspec, &tree, &base, base.len,
824 obj->type == OBJ_COMMIT);
e5e062b6 825 strbuf_release(&base);
5010cb5f
JH
826 free(data);
827 return hit;
828 }
2fc5f9f1 829 die(_("unable to grep from object of type %s"), typename(obj->type));
5010cb5f
JH
830}
831
f34bbc15 832static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
30d00c39
JN
833 const struct object_array *list)
834{
835 unsigned int i;
836 int hit = 0;
837 const unsigned int nr = list->nr;
838
839 for (i = 0; i < nr; i++) {
840 struct object *real_obj;
841 real_obj = deref_tag(list->objects[i].item, NULL, 0);
74ed4371
BW
842
843 /* load the gitmodules file for this rev */
844 if (recurse_submodules) {
845 submodule_free();
846 gitmodules_config_sha1(real_obj->oid.hash);
847 }
9e0c3c4f 848 if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path)) {
30d00c39
JN
849 hit = 1;
850 if (opt->status_only)
851 break;
852 }
853 }
854 return hit;
855}
856
dbfae86a 857static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
85975c0c 858 int exc_std, int use_index)
59332d13
JH
859{
860 struct dir_struct dir;
861 int i, hit = 0;
862
863 memset(&dir, 0, sizeof(dir));
85975c0c
JK
864 if (!use_index)
865 dir.flags |= DIR_NO_GITLINKS;
0a93fb8a
JH
866 if (exc_std)
867 setup_standard_excludes(&dir);
59332d13 868
7327d3d1 869 fill_directory(&dir, pathspec);
59332d13 870 for (i = 0; i < dir.nr; i++) {
ebb32893 871 if (!dir_path_match(dir.entries[i], pathspec, 0, NULL))
9d8b831b 872 continue;
59332d13
JH
873 hit |= grep_file(opt, dir.entries[i]->name);
874 if (hit && opt->status_only)
875 break;
876 }
59332d13
JH
877 return hit;
878}
879
ff3c7f9a
RS
880static int context_callback(const struct option *opt, const char *arg,
881 int unset)
3e230fa1
RS
882{
883 struct grep_opt *grep_opt = opt->value;
884 int value;
885 const char *endp;
886
887 if (unset) {
888 grep_opt->pre_context = grep_opt->post_context = 0;
889 return 0;
890 }
891 value = strtol(arg, (char **)&endp, 10);
892 if (*endp) {
2fc5f9f1 893 return error(_("switch `%c' expects a numerical value"),
3e230fa1
RS
894 opt->short_name);
895 }
896 grep_opt->pre_context = grep_opt->post_context = value;
897 return 0;
898}
899
ff3c7f9a 900static int file_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
901{
902 struct grep_opt *grep_opt = opt->value;
c41dd2fd 903 int from_stdin = !strcmp(arg, "-");
3e230fa1
RS
904 FILE *patterns;
905 int lno = 0;
cfe370c6 906 struct strbuf sb = STRBUF_INIT;
3e230fa1 907
c41dd2fd 908 patterns = from_stdin ? stdin : fopen(arg, "r");
3e230fa1 909 if (!patterns)
2fc5f9f1 910 die_errno(_("cannot open '%s'"), arg);
a5518431 911 while (strbuf_getline(&sb, patterns) == 0) {
3e230fa1
RS
912 /* ignore empty line like grep does */
913 if (sb.len == 0)
914 continue;
ed40a095 915
ec830611
RS
916 append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
917 GREP_PATTERN);
3e230fa1 918 }
c41dd2fd
RS
919 if (!from_stdin)
920 fclose(patterns);
3e230fa1
RS
921 strbuf_release(&sb);
922 return 0;
923}
924
ff3c7f9a 925static int not_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
926{
927 struct grep_opt *grep_opt = opt->value;
928 append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
929 return 0;
930}
931
ff3c7f9a 932static int and_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
933{
934 struct grep_opt *grep_opt = opt->value;
935 append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
936 return 0;
937}
938
ff3c7f9a 939static int open_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
940{
941 struct grep_opt *grep_opt = opt->value;
942 append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
943 return 0;
944}
945
ff3c7f9a 946static int close_callback(const struct option *opt, const char *arg, int unset)
3e230fa1
RS
947{
948 struct grep_opt *grep_opt = opt->value;
949 append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
950 return 0;
951}
952
ff3c7f9a
RS
953static int pattern_callback(const struct option *opt, const char *arg,
954 int unset)
3e230fa1
RS
955{
956 struct grep_opt *grep_opt = opt->value;
957 append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
958 return 0;
959}
5010cb5f 960
a633fca0 961int cmd_grep(int argc, const char **argv, const char *prefix)
5010cb5f 962{
5010cb5f 963 int hit = 0;
0a93fb8a 964 int cached = 0, untracked = 0, opt_exclude = -1;
5acd64ed 965 int seen_dashdash = 0;
bbc09c22 966 int external_grep_allowed__ignored;
0af88c15 967 const char *show_in_pager = NULL, *default_pager = "dummy";
5010cb5f 968 struct grep_opt opt;
3cd47459 969 struct object_array list = OBJECT_ARRAY_INIT;
f34bbc15 970 struct pathspec pathspec;
183113a5 971 struct string_list path_list = STRING_LIST_INIT_NODUP;
5acd64ed 972 int i;
3e230fa1 973 int dummy;
ff38d1a9 974 int use_index = 1;
84befcd0 975 int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
131f3c96 976 int allow_revs;
cca2c172 977
3e230fa1 978 struct option options[] = {
d5d09d47 979 OPT_BOOL(0, "cached", &cached,
4b407bc5 980 N_("search in index instead of in the work tree")),
cbb08c2e 981 OPT_NEGBIT(0, "no-index", &use_index,
f63cf8c9 982 N_("find in contents not managed by git"), 1),
d5d09d47 983 OPT_BOOL(0, "untracked", &untracked,
4b407bc5 984 N_("search in both tracked and untracked files")),
0a93fb8a 985 OPT_SET_INT(0, "exclude-standard", &opt_exclude,
77fdb8a8 986 N_("ignore files specified via '.gitignore'"), 1),
0281e487 987 OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
4fb1c6aa 988 N_("recursively search in each submodule")),
74ed4371
BW
989 OPT_STRING(0, "parent-basename", &parent_basename,
990 N_("basename"),
991 N_("prepend parent project's basename to output")),
3e230fa1 992 OPT_GROUP(""),
d5d09d47 993 OPT_BOOL('v', "invert-match", &opt.invert,
4b407bc5 994 N_("show non-matching lines")),
d5d09d47 995 OPT_BOOL('i', "ignore-case", &opt.ignore_case,
4b407bc5 996 N_("case insensitive matching")),
d5d09d47 997 OPT_BOOL('w', "word-regexp", &opt.word_regexp,
4b407bc5 998 N_("match patterns only at word boundaries")),
3e230fa1 999 OPT_SET_INT('a', "text", &opt.binary,
4b407bc5 1000 N_("process binary files as text"), GREP_BINARY_TEXT),
3e230fa1 1001 OPT_SET_INT('I', NULL, &opt.binary,
4b407bc5 1002 N_("don't match patterns in binary files"),
3e230fa1 1003 GREP_BINARY_NOMATCH),
335ec3bf
JK
1004 OPT_BOOL(0, "textconv", &opt.allow_textconv,
1005 N_("process binary files with textconv filters")),
4b407bc5
NTND
1006 { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
1007 N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
a91f453f 1008 NULL, 1 },
3e230fa1 1009 OPT_GROUP(""),
84befcd0 1010 OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
4b407bc5 1011 N_("use extended POSIX regular expressions"),
84befcd0
S
1012 GREP_PATTERN_TYPE_ERE),
1013 OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
4b407bc5 1014 N_("use basic POSIX regular expressions (default)"),
84befcd0
S
1015 GREP_PATTERN_TYPE_BRE),
1016 OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
4b407bc5 1017 N_("interpret patterns as fixed strings"),
84befcd0
S
1018 GREP_PATTERN_TYPE_FIXED),
1019 OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
4b407bc5 1020 N_("use Perl-compatible regular expressions"),
84befcd0 1021 GREP_PATTERN_TYPE_PCRE),
3e230fa1 1022 OPT_GROUP(""),
d5d09d47 1023 OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
4b407bc5
NTND
1024 OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
1025 OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
3e230fa1 1026 OPT_NEGBIT(0, "full-name", &opt.relative,
4b407bc5 1027 N_("show filenames relative to top directory"), 1),
d5d09d47 1028 OPT_BOOL('l', "files-with-matches", &opt.name_only,
4b407bc5 1029 N_("show only filenames instead of matching lines")),
d5d09d47 1030 OPT_BOOL(0, "name-only", &opt.name_only,
4b407bc5 1031 N_("synonym for --files-with-matches")),
d5d09d47 1032 OPT_BOOL('L', "files-without-match",
3e230fa1 1033 &opt.unmatch_name_only,
4b407bc5 1034 N_("show only the names of files without match")),
d5d09d47 1035 OPT_BOOL('z', "null", &opt.null_following_name,
4b407bc5 1036 N_("print NUL after filenames")),
d5d09d47 1037 OPT_BOOL('c', "count", &opt.count,
4b407bc5
NTND
1038 N_("show the number of matches instead of matching lines")),
1039 OPT__COLOR(&opt.color, N_("highlight matches")),
d5d09d47 1040 OPT_BOOL(0, "break", &opt.file_break,
4b407bc5 1041 N_("print empty line between matches from different files")),
d5d09d47 1042 OPT_BOOL(0, "heading", &opt.heading,
4b407bc5 1043 N_("show filename only once above matches from same file")),
3e230fa1 1044 OPT_GROUP(""),
4b407bc5
NTND
1045 OPT_CALLBACK('C', "context", &opt, N_("n"),
1046 N_("show <n> context lines before and after matches"),
3e230fa1 1047 context_callback),
317f63c2 1048 OPT_INTEGER('B', "before-context", &opt.pre_context,
4b407bc5 1049 N_("show <n> context lines before matches")),
317f63c2 1050 OPT_INTEGER('A', "after-context", &opt.post_context,
4b407bc5 1051 N_("show <n> context lines after matches")),
89f09dd3
VL
1052 OPT_INTEGER(0, "threads", &num_threads,
1053 N_("use <n> worker threads")),
4b407bc5 1054 OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
3e230fa1 1055 context_callback),
d5d09d47 1056 OPT_BOOL('p', "show-function", &opt.funcname,
4b407bc5 1057 N_("show a line with the function name before matches")),
d5d09d47 1058 OPT_BOOL('W', "function-context", &opt.funcbody,
4b407bc5 1059 N_("show the surrounding function")),
3e230fa1 1060 OPT_GROUP(""),
4b407bc5
NTND
1061 OPT_CALLBACK('f', NULL, &opt, N_("file"),
1062 N_("read patterns from file"), file_callback),
1063 { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
1064 N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
3e230fa1 1065 { OPTION_CALLBACK, 0, "and", &opt, NULL,
4b407bc5 1066 N_("combine patterns specified with -e"),
3e230fa1 1067 PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
d5d09d47 1068 OPT_BOOL(0, "or", &dummy, ""),
3e230fa1
RS
1069 { OPTION_CALLBACK, 0, "not", &opt, NULL, "",
1070 PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
1071 { OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
1072 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
1073 open_callback },
1074 { OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
1075 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
1076 close_callback },
d52ee6e6 1077 OPT__QUIET(&opt.status_only,
4b407bc5 1078 N_("indicate hit with exit status without output")),
d5d09d47 1079 OPT_BOOL(0, "all-match", &opt.all_match,
4b407bc5 1080 N_("show only matches from files that match all patterns")),
17bf35a3 1081 { OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
3d7535e4 1082 N_("show parse tree for grep expression"),
17bf35a3 1083 PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
3e230fa1 1084 OPT_GROUP(""),
0af88c15 1085 { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
4b407bc5 1086 N_("pager"), N_("show matching files in the pager"),
0af88c15 1087 PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
d5d09d47
SB
1088 OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored,
1089 N_("allow calling of grep(1) (ignored by this build)")),
3e230fa1
RS
1090 OPT_END()
1091 };
5010cb5f 1092
15fabd1b
JH
1093 init_grep_defaults();
1094 git_config(grep_cmd_config, NULL);
1095 grep_init(&opt, prefix);
0281e487 1096 super_prefix = get_super_prefix();
7e8f59d5 1097
5010cb5f 1098 /*
5acd64ed
JH
1099 * If there is no -- then the paths must exist in the working
1100 * tree. If there is no explicit pattern specified with -e or
1101 * -f, we take the first unrecognized non option to be the
1102 * pattern, but then what follows it must be zero or more
1103 * valid refs up to the -- (if exists), and then existing
1104 * paths. If there is an explicit pattern, then the first
82e5a82f 1105 * unrecognized non option is the beginning of the refs list
5acd64ed 1106 * that continues up to the -- (if exists), and then paths.
5010cb5f 1107 */
37782920 1108 argc = parse_options(argc, argv, prefix, options, grep_usage,
3e230fa1 1109 PARSE_OPT_KEEP_DASHDASH |
44415499 1110 PARSE_OPT_STOP_AT_NON_OPTION);
c5c31d33 1111 grep_commit_pattern_type(pattern_type_arg, &opt);
3e230fa1 1112
ecd9ba61
TG
1113 if (use_index && !startup_info->have_repository) {
1114 int fallback = 0;
1115 git_config_get_bool("grep.fallbacktonoindex", &fallback);
1116 if (fallback)
1117 use_index = 0;
1118 else
1119 /* die the same way as if we did it at the beginning */
1120 setup_git_directory();
1121 }
59332d13 1122
1123c67c
JK
1123 /*
1124 * skip a -- separator; we know it cannot be
1125 * separating revisions from pathnames if
1126 * we haven't even had any patterns yet
1127 */
1128 if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
1129 argv++;
1130 argc--;
1131 }
1132
3e230fa1
RS
1133 /* First unrecognized non-option token */
1134 if (argc > 0 && !opt.pattern_list) {
1135 append_grep_pattern(&opt, argv[0], "command line", 0,
1136 GREP_PATTERN);
1137 argv++;
1138 argc--;
5010cb5f 1139 }
5acd64ed 1140
0af88c15
JS
1141 if (show_in_pager == default_pager)
1142 show_in_pager = git_pager(1);
678e484b 1143 if (show_in_pager) {
e7b082a4 1144 opt.color = 0;
0af88c15
JS
1145 opt.name_only = 1;
1146 opt.null_following_name = 1;
1147 opt.output_priv = &path_list;
1148 opt.output = append_path;
0c72cead 1149 string_list_append(&path_list, show_in_pager);
678e484b
JS
1150 }
1151
f9b9faf6 1152 if (!opt.pattern_list)
2fc5f9f1 1153 die(_("no pattern given."));
5183bf67
BC
1154 if (!opt.fixed && opt.ignore_case)
1155 opt.regflags |= REG_ICASE;
5b594f45 1156
83b5d2f5 1157 compile_grep_patterns(&opt);
5acd64ed 1158
b5b81136
JK
1159 /*
1160 * We have to find "--" in a separate pass, because its presence
1161 * influences how we will parse arguments that come before it.
1162 */
1163 for (i = 0; i < argc; i++) {
1164 if (!strcmp(argv[i], "--")) {
1165 seen_dashdash = 1;
1166 break;
1167 }
1168 }
1169
1170 /*
1171 * Resolve any rev arguments. If we have a dashdash, then everything up
1172 * to it must resolve as a rev. If not, then we stop at the first
1173 * non-rev and assume everything else is a path.
1174 */
131f3c96 1175 allow_revs = use_index && !untracked;
3e230fa1 1176 for (i = 0; i < argc; i++) {
5acd64ed 1177 const char *arg = argv[i];
1db11086 1178 struct object_id oid;
afa15f3c 1179 struct object_context oc;
20d6421c
JK
1180 struct object *object;
1181
dca3b5f5
JT
1182 if (!strcmp(arg, "--")) {
1183 i++;
dca3b5f5
JT
1184 break;
1185 }
20d6421c 1186
131f3c96 1187 if (!allow_revs) {
d0ffc069 1188 if (seen_dashdash)
131f3c96 1189 die(_("--no-index or --untracked cannot be used with revs"));
d0ffc069
JK
1190 break;
1191 }
1192
e1fae930 1193 if (get_sha1_with_context(arg, 0, oid.hash, &oc)) {
b5b81136
JK
1194 if (seen_dashdash)
1195 die(_("unable to resolve revision: %s"), arg);
20d6421c 1196 break;
b5b81136 1197 }
20d6421c 1198
c251c83d 1199 object = parse_object_or_die(&oid, arg);
20d6421c
JK
1200 if (!seen_dashdash)
1201 verify_non_filename(prefix, arg);
1202 add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
1362671f 1203 }
5acd64ed 1204
b5b81136
JK
1205 /*
1206 * Anything left over is presumed to be a path. But in the non-dashdash
1207 * "do what I mean" case, we verify and complain when that isn't true.
1208 */
a0fe2b0d
JK
1209 if (!seen_dashdash) {
1210 int j;
1211 for (j = i; j < argc; j++)
131f3c96 1212 verify_filename(prefix, argv[j], j == i && allow_revs);
a0fe2b0d
JK
1213 }
1214
1215 parse_pathspec(&pathspec, 0,
1216 PATHSPEC_PREFER_CWD |
1217 (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
1218 prefix, argv + i);
1219 pathspec.max_depth = opt.max_depth;
1220 pathspec.recursive = 1;
1221
53b8d931 1222#ifndef NO_PTHREADS
044b1f3c 1223 if (list.nr || cached || show_in_pager)
89f09dd3
VL
1224 num_threads = 0;
1225 else if (num_threads == 0)
1226 num_threads = GREP_NUM_THREADS_DEFAULT;
1227 else if (num_threads < 0)
1228 die(_("invalid number of threads specified (%d)"), num_threads);
53b8d931 1229#else
89f09dd3 1230 num_threads = 0;
53b8d931
TR
1231#endif
1232
53b8d931 1233#ifndef NO_PTHREADS
89f09dd3 1234 if (num_threads) {
50dd0f2f
AY
1235 if (!(opt.name_only || opt.unmatch_name_only || opt.count)
1236 && (opt.pre_context || opt.post_context ||
1237 opt.file_break || opt.funcbody))
53b8d931
TR
1238 skip_first_line = 1;
1239 start_threads(&opt);
1240 }
1241#endif
1242
0281e487
BW
1243 if (recurse_submodules) {
1244 gitmodules_config();
be80a239 1245 compile_submodule_options(&opt, argv + i, cached, untracked,
0281e487
BW
1246 opt_exclude, use_index,
1247 pattern_type_arg);
1248 }
1249
678e484b 1250 if (show_in_pager && (cached || list.nr))
e4fe4ba5 1251 die(_("--open-files-in-pager only works on the worktree"));
678e484b
JS
1252
1253 if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
1254 const char *pager = path_list.items[0].string;
1255 int len = strlen(pager);
1256
1257 if (len > 4 && is_dir_sep(pager[len - 5]))
1258 pager += len - 4;
1259
f7febbea
JS
1260 if (opt.ignore_case && !strcmp("less", pager))
1261 string_list_append(&path_list, "-I");
1262
678e484b
JS
1263 if (!strcmp("less", pager) || !strcmp("vi", pager)) {
1264 struct strbuf buf = STRBUF_INIT;
1265 strbuf_addf(&buf, "+/%s%s",
1266 strcmp("less", pager) ? "" : "*",
1267 opt.pattern_list->pattern);
0c72cead 1268 string_list_append(&path_list, buf.buf);
678e484b
JS
1269 strbuf_detach(&buf, NULL);
1270 }
1271 }
1272
74ed4371 1273 if (recurse_submodules && (!use_index || untracked))
0281e487
BW
1274 die(_("option not supported with --recurse-submodules."));
1275
c2048f0b 1276 if (!show_in_pager && !opt.status_only)
678e484b
JS
1277 setup_pager();
1278
0a93fb8a 1279 if (!use_index && (untracked || cached))
dbfae86a 1280 die(_("--cached or --untracked cannot be used with --no-index."));
678e484b 1281
0a93fb8a 1282 if (!use_index || untracked) {
0a93fb8a 1283 int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
85975c0c 1284 hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
dbfae86a 1285 } else if (0 <= opt_exclude) {
9fddaf78 1286 die(_("--[no-]exclude-standard cannot be used for tracked contents."));
685359cf 1287 } else if (!list.nr) {
6577f542
NTND
1288 if (!cached)
1289 setup_work_tree();
5b594f45 1290
f34bbc15 1291 hit = grep_cache(&opt, &pathspec, cached);
685359cf
JS
1292 } else {
1293 if (cached)
2fc5f9f1 1294 die(_("both --cached and trees are given."));
f34bbc15 1295 hit = grep_objects(&opt, &pathspec, &list);
5010cb5f 1296 }
5b594f45 1297
89f09dd3 1298 if (num_threads)
5b594f45 1299 hit |= wait_all();
678e484b
JS
1300 if (hit && show_in_pager)
1301 run_pager(&opt, prefix);
7861fa07 1302 clear_pathspec(&pathspec);
b48fb5b6 1303 free_grep_patterns(&opt);
5010cb5f
JH
1304 return !hit;
1305}