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Junio C Hamano5010cb52006-04-30 23:28:15 -07001/*
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"
Junio C Hamano13626712006-05-01 15:58:29 -070011#include "tree-walk.h"
Junio C Hamano5010cb52006-04-30 23:28:15 -070012#include "builtin.h"
René Scharfe3e230fa2009-05-07 21:46:48 +020013#include "parse-options.h"
Johannes Schindelin678e4842010-06-12 11:36:51 -050014#include "string-list.h"
15#include "run-command.h"
René Scharfe60ecac92009-07-02 00:07:24 +020016#include "userdiff.h"
Junio C Hamano83b5d2f2006-09-17 16:02:52 -070017#include "grep.h"
Clemens Buchacher493b7a02009-09-05 14:31:17 +020018#include "quote.h"
Junio C Hamano59332d12010-02-06 10:40:08 -080019#include "dir.h"
Nguyễn Thái Ngọc Duy64acde92013-07-14 15:35:25 +070020#include "pathspec.h"
Brandon Williams0281e482016-12-16 11:03:20 -080021#include "submodule.h"
Brandon Williams74ed4372016-12-16 11:03:21 -080022#include "submodule-config.h"
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +010023
René Scharfe3e230fa2009-05-07 21:46:48 +020024static char const * const grep_usage[] = {
Alex Henrie9c9b4f22015-01-13 00:44:47 -070025 N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"),
René Scharfe3e230fa2009-05-07 21:46:48 +020026 NULL
27};
28
Brandon Williams0281e482016-12-16 11:03:20 -080029static const char *super_prefix;
30static int recurse_submodules;
31static struct argv_array submodule_options = ARGV_ARRAY_INIT;
Brandon Williams74ed4372016-12-16 11:03:21 -080032static const char *parent_basename;
Brandon Williams0281e482016-12-16 11:03:20 -080033
34static int grep_submodule_launch(struct grep_opt *opt,
35 const struct grep_source *gs);
36
Victor Leschuk89f09dd2015-12-15 18:31:39 +030037#define GREP_NUM_THREADS_DEFAULT 8
38static int num_threads;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +010039
40#ifndef NO_PTHREADS
Victor Leschuk89f09dd2015-12-15 18:31:39 +030041static pthread_t *threads;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +010042
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +010043/* 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 */
Jonathan Nieder9cba13c2011-03-16 02:08:34 -050047struct work_item {
Jeff King8f24a632012-02-02 03:19:37 -050048 struct grep_source source;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +010049 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
Junio C Hamano1487a122011-10-26 11:45:15 -070074static inline void grep_lock(void)
75{
Victor Leschuk89f09dd2015-12-15 18:31:39 +030076 if (num_threads)
Junio C Hamano1487a122011-10-26 11:45:15 -070077 pthread_mutex_lock(&grep_mutex);
78}
79
80static inline void grep_unlock(void)
81{
Victor Leschuk89f09dd2015-12-15 18:31:39 +030082 if (num_threads)
Junio C Hamano1487a122011-10-26 11:45:15 -070083 pthread_mutex_unlock(&grep_mutex);
84}
85
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +010086/* 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
René Scharfe08303c32011-06-05 17:24:15 +020097static int skip_first_line;
René Scharfe431d6e72010-03-15 17:21:10 +010098
Jeff King9dd52452012-02-02 03:24:28 -050099static void add_work(struct grep_opt *opt, enum grep_source_type type,
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700100 const char *name, const char *path, const void *id)
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100101{
102 grep_lock();
103
104 while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) {
105 pthread_cond_wait(&cond_write, &grep_mutex);
106 }
107
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700108 grep_source_init(&todo[todo_end].source, type, name, path, id);
Jeff King9dd52452012-02-02 03:24:28 -0500109 if (opt->binary != GREP_BINARY_TEXT)
110 grep_source_load_driver(&todo[todo_end].source);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100111 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
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100138static 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];
René Scharfe431d6e72010-03-15 17:21:10 +0100148 if (w->out.len) {
René Scharfe08303c32011-06-05 17:24:15 +0200149 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);
René Scharfe431d6e72010-03-15 17:21:10 +0100163 }
Jeff King8f24a632012-02-02 03:19:37 -0500164 grep_source_clear(&w->source);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100165 }
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;
Brandon Williams0281e482016-12-16 11:03:20 -0800187 if (w->source.type == GREP_SOURCE_SUBMODULE)
188 hit |= grep_submodule_launch(opt, &w->source);
189 else
190 hit |= grep_source(opt, &w->source);
Jeff King8f24a632012-02-02 03:19:37 -0500191 grep_source_clear_data(&w->source);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100192 work_done(w);
193 }
Dan McGeebfac23d2010-01-30 09:42:58 -0600194 free_grep_patterns(arg);
195 free(arg);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100196
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);
Jeff Kingb3aeb282012-02-02 03:18:41 -0500211 pthread_mutex_init(&grep_read_mutex, NULL);
Thomas Rast0579f912011-12-12 22:16:07 +0100212 pthread_mutex_init(&grep_attr_mutex, NULL);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100213 pthread_cond_init(&cond_add, NULL);
214 pthread_cond_init(&cond_write, NULL);
215 pthread_cond_init(&cond_result, NULL);
Jeff King78db6ea2012-02-02 03:18:29 -0500216 grep_use_locks = 1;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100217
218 for (i = 0; i < ARRAY_SIZE(todo); i++) {
219 strbuf_init(&todo[i].out, 0);
220 }
221
Victor Leschuk89f09dd2015-12-15 18:31:39 +0300222 threads = xcalloc(num_threads, sizeof(*threads));
223 for (i = 0; i < num_threads; i++) {
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100224 int err;
225 struct grep_opt *o = grep_opt_dup(opt);
226 o->output = strbuf_out;
Michael J Gruber208f5aa2012-09-14 11:46:35 +0200227 o->debug = 0;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100228 compile_grep_patterns(o);
229 err = pthread_create(&threads[i], NULL, run, o);
230
231 if (err)
Ævar Arnfjörð Bjarmason2fc5f9f2011-02-22 23:41:55 +0000232 die(_("grep: failed to create thread: %s"),
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100233 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
Victor Leschuk89f09dd2015-12-15 18:31:39 +0300255 for (i = 0; i < num_threads; i++) {
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100256 void *h;
257 pthread_join(threads[i], &h);
258 hit |= (int) (intptr_t) h;
259 }
260
Victor Leschuk89f09dd2015-12-15 18:31:39 +0300261 free(threads);
262
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100263 pthread_mutex_destroy(&grep_mutex);
Jeff Kingb3aeb282012-02-02 03:18:41 -0500264 pthread_mutex_destroy(&grep_read_mutex);
Thomas Rast0579f912011-12-12 22:16:07 +0100265 pthread_mutex_destroy(&grep_attr_mutex);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100266 pthread_cond_destroy(&cond_add);
267 pthread_cond_destroy(&cond_write);
268 pthread_cond_destroy(&cond_result);
Jeff King78db6ea2012-02-02 03:18:29 -0500269 grep_use_locks = 0;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100270
271 return hit;
272}
273#else /* !NO_PTHREADS */
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100274
275static int wait_all(void)
276{
277 return 0;
278}
279#endif
280
Junio C Hamano15fabd12012-10-09 16:04:12 -0700281static 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;
Victor Leschuk89f09dd2015-12-15 18:31:39 +0300286
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
Junio C Hamano15fabd12012-10-09 16:04:12 -0700294 return st;
295}
296
Junio C Hamano5f02d312010-02-15 18:34:28 -0800297static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size)
298{
299 void *data;
300
Jeff Kingb3aeb282012-02-02 03:18:41 -0500301 grep_read_lock();
Junio C Hamano76416132011-10-26 12:15:51 -0700302 data = read_sha1_file(sha1, type, size);
Jeff Kingb3aeb282012-02-02 03:18:41 -0500303 grep_read_unlock();
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100304 return data;
Junio C Hamano5010cb52006-04-30 23:28:15 -0700305}
306
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100307static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1,
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700308 const char *filename, int tree_name_len,
309 const char *path)
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100310{
311 struct strbuf pathbuf = STRBUF_INIT;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100312
313 if (opt->relative && opt->prefix_length) {
Jiang Xin39598f92013-06-25 23:53:45 +0800314 quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100315 strbuf_insert(&pathbuf, 0, filename, tree_name_len);
Brandon Williams0281e482016-12-16 11:03:20 -0800316 } else if (super_prefix) {
317 strbuf_add(&pathbuf, filename, tree_name_len);
318 strbuf_addstr(&pathbuf, super_prefix);
319 strbuf_addstr(&pathbuf, filename + tree_name_len);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100320 } else {
321 strbuf_addstr(&pathbuf, filename);
322 }
323
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100324#ifndef NO_PTHREADS
Victor Leschuk89f09dd2015-12-15 18:31:39 +0300325 if (num_threads) {
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700326 add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1);
Jeff King8f24a632012-02-02 03:19:37 -0500327 strbuf_release(&pathbuf);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100328 return 0;
329 } else
330#endif
331 {
Jeff King8f24a632012-02-02 03:19:37 -0500332 struct grep_source gs;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100333 int hit;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100334
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700335 grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1);
Jeff King8f24a632012-02-02 03:19:37 -0500336 strbuf_release(&pathbuf);
337 hit = grep_source(opt, &gs);
338
339 grep_source_clear(&gs);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100340 return hit;
341 }
342}
343
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100344static int grep_file(struct grep_opt *opt, const char *filename)
345{
346 struct strbuf buf = STRBUF_INIT;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100347
Brandon Williams0281e482016-12-16 11:03:20 -0800348 if (opt->relative && opt->prefix_length) {
Jiang Xin39598f92013-06-25 23:53:45 +0800349 quote_path_relative(filename, opt->prefix, &buf);
Brandon Williams0281e482016-12-16 11:03:20 -0800350 } else {
351 if (super_prefix)
352 strbuf_addstr(&buf, super_prefix);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100353 strbuf_addstr(&buf, filename);
Brandon Williams0281e482016-12-16 11:03:20 -0800354 }
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100355
356#ifndef NO_PTHREADS
Victor Leschuk89f09dd2015-12-15 18:31:39 +0300357 if (num_threads) {
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700358 add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename);
Jeff King8f24a632012-02-02 03:19:37 -0500359 strbuf_release(&buf);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100360 return 0;
361 } else
362#endif
363 {
Jeff King8f24a632012-02-02 03:19:37 -0500364 struct grep_source gs;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100365 int hit;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100366
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700367 grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename);
Jeff King8f24a632012-02-02 03:19:37 -0500368 strbuf_release(&buf);
369 hit = grep_source(opt, &gs);
370
371 grep_source_clear(&gs);
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +0100372 return hit;
373 }
Junio C Hamano5010cb52006-04-30 23:28:15 -0700374}
375
Johannes Schindelin678e4842010-06-12 11:36:51 -0500376static void append_path(struct grep_opt *opt, const void *data, size_t len)
377{
378 struct string_list *path_list = opt->output_priv;
379
380 if (len == 1 && *(const char *)data == '\0')
381 return;
Julian Phillips0c72cea2010-06-26 00:41:39 +0100382 string_list_append(path_list, xstrndup(data, len));
Johannes Schindelin678e4842010-06-12 11:36:51 -0500383}
384
385static void run_pager(struct grep_opt *opt, const char *prefix)
386{
387 struct string_list *path_list = opt->output_priv;
Jeff King850d2fe2016-02-22 17:44:21 -0500388 struct child_process child = CHILD_PROCESS_INIT;
Johannes Schindelin678e4842010-06-12 11:36:51 -0500389 int i, status;
390
391 for (i = 0; i < path_list->nr; i++)
Jeff King850d2fe2016-02-22 17:44:21 -0500392 argv_array_push(&child.args, path_list->items[i].string);
393 child.dir = prefix;
394 child.use_shell = 1;
Johannes Schindelin678e4842010-06-12 11:36:51 -0500395
Jeff King850d2fe2016-02-22 17:44:21 -0500396 status = run_command(&child);
Johannes Schindelin678e4842010-06-12 11:36:51 -0500397 if (status)
398 exit(status);
Johannes Schindelin678e4842010-06-12 11:36:51 -0500399}
400
Brandon Williams0281e482016-12-16 11:03:20 -0800401static void compile_submodule_options(const struct grep_opt *opt,
402 const struct pathspec *pathspec,
403 int cached, int untracked,
404 int opt_exclude, int use_index,
405 int pattern_type_arg)
406{
407 struct grep_pat *pattern;
408 int i;
409
410 if (recurse_submodules)
411 argv_array_push(&submodule_options, "--recurse-submodules");
412
413 if (cached)
414 argv_array_push(&submodule_options, "--cached");
415 if (!use_index)
416 argv_array_push(&submodule_options, "--no-index");
417 if (untracked)
418 argv_array_push(&submodule_options, "--untracked");
419 if (opt_exclude > 0)
420 argv_array_push(&submodule_options, "--exclude-standard");
421
422 if (opt->invert)
423 argv_array_push(&submodule_options, "-v");
424 if (opt->ignore_case)
425 argv_array_push(&submodule_options, "-i");
426 if (opt->word_regexp)
427 argv_array_push(&submodule_options, "-w");
428 switch (opt->binary) {
429 case GREP_BINARY_NOMATCH:
430 argv_array_push(&submodule_options, "-I");
431 break;
432 case GREP_BINARY_TEXT:
433 argv_array_push(&submodule_options, "-a");
434 break;
435 default:
436 break;
437 }
438 if (opt->allow_textconv)
439 argv_array_push(&submodule_options, "--textconv");
440 if (opt->max_depth != -1)
441 argv_array_pushf(&submodule_options, "--max-depth=%d",
442 opt->max_depth);
443 if (opt->linenum)
444 argv_array_push(&submodule_options, "-n");
445 if (!opt->pathname)
446 argv_array_push(&submodule_options, "-h");
447 if (!opt->relative)
448 argv_array_push(&submodule_options, "--full-name");
449 if (opt->name_only)
450 argv_array_push(&submodule_options, "-l");
451 if (opt->unmatch_name_only)
452 argv_array_push(&submodule_options, "-L");
453 if (opt->null_following_name)
454 argv_array_push(&submodule_options, "-z");
455 if (opt->count)
456 argv_array_push(&submodule_options, "-c");
457 if (opt->file_break)
458 argv_array_push(&submodule_options, "--break");
459 if (opt->heading)
460 argv_array_push(&submodule_options, "--heading");
461 if (opt->pre_context)
462 argv_array_pushf(&submodule_options, "--before-context=%d",
463 opt->pre_context);
464 if (opt->post_context)
465 argv_array_pushf(&submodule_options, "--after-context=%d",
466 opt->post_context);
467 if (opt->funcname)
468 argv_array_push(&submodule_options, "-p");
469 if (opt->funcbody)
470 argv_array_push(&submodule_options, "-W");
471 if (opt->all_match)
472 argv_array_push(&submodule_options, "--all-match");
473 if (opt->debug)
474 argv_array_push(&submodule_options, "--debug");
475 if (opt->status_only)
476 argv_array_push(&submodule_options, "-q");
477
478 switch (pattern_type_arg) {
479 case GREP_PATTERN_TYPE_BRE:
480 argv_array_push(&submodule_options, "-G");
481 break;
482 case GREP_PATTERN_TYPE_ERE:
483 argv_array_push(&submodule_options, "-E");
484 break;
485 case GREP_PATTERN_TYPE_FIXED:
486 argv_array_push(&submodule_options, "-F");
487 break;
488 case GREP_PATTERN_TYPE_PCRE:
489 argv_array_push(&submodule_options, "-P");
490 break;
491 case GREP_PATTERN_TYPE_UNSPECIFIED:
492 break;
493 }
494
495 for (pattern = opt->pattern_list; pattern != NULL;
496 pattern = pattern->next) {
497 switch (pattern->token) {
498 case GREP_PATTERN:
499 argv_array_pushf(&submodule_options, "-e%s",
500 pattern->pattern);
501 break;
502 case GREP_AND:
503 case GREP_OPEN_PAREN:
504 case GREP_CLOSE_PAREN:
505 case GREP_NOT:
506 case GREP_OR:
507 argv_array_push(&submodule_options, pattern->pattern);
508 break;
509 /* BODY and HEAD are not used by git-grep */
510 case GREP_PATTERN_BODY:
511 case GREP_PATTERN_HEAD:
512 break;
513 }
514 }
515
516 /*
517 * Limit number of threads for child process to use.
518 * This is to prevent potential fork-bomb behavior of git-grep as each
519 * submodule process has its own thread pool.
520 */
521 argv_array_pushf(&submodule_options, "--threads=%d",
522 (num_threads + 1) / 2);
523
524 /* Add Pathspecs */
525 argv_array_push(&submodule_options, "--");
526 for (i = 0; i < pathspec->nr; i++)
527 argv_array_push(&submodule_options,
528 pathspec->items[i].original);
529}
530
531/*
532 * Launch child process to grep contents of a submodule
533 */
534static int grep_submodule_launch(struct grep_opt *opt,
535 const struct grep_source *gs)
536{
537 struct child_process cp = CHILD_PROCESS_INIT;
538 int status, i;
Brandon Williams74ed4372016-12-16 11:03:21 -0800539 const char *end_of_base;
540 const char *name;
Brandon Williams0281e482016-12-16 11:03:20 -0800541 struct work_item *w = opt->output_priv;
542
Brandon Williams74ed4372016-12-16 11:03:21 -0800543 end_of_base = strchr(gs->name, ':');
544 if (gs->identifier && end_of_base)
545 name = end_of_base + 1;
546 else
547 name = gs->name;
548
Brandon Williams0281e482016-12-16 11:03:20 -0800549 prepare_submodule_repo_env(&cp.env_array);
Brandon Williamse6fac7f2016-12-16 11:03:22 -0800550 argv_array_push(&cp.env_array, GIT_DIR_ENVIRONMENT);
Brandon Williams0281e482016-12-16 11:03:20 -0800551
552 /* Add super prefix */
553 argv_array_pushf(&cp.args, "--super-prefix=%s%s/",
554 super_prefix ? super_prefix : "",
Brandon Williams74ed4372016-12-16 11:03:21 -0800555 name);
Brandon Williams0281e482016-12-16 11:03:20 -0800556 argv_array_push(&cp.args, "grep");
557
Brandon Williams74ed4372016-12-16 11:03:21 -0800558 /*
559 * Add basename of parent project
560 * When performing grep on a tree object the filename is prefixed
561 * with the object's name: 'tree-name:filename'. In order to
562 * provide uniformity of output we want to pass the name of the
563 * parent project's object name to the submodule so the submodule can
564 * prefix its output with the parent's name and not its own SHA1.
565 */
566 if (gs->identifier && end_of_base)
567 argv_array_pushf(&cp.args, "--parent-basename=%.*s",
568 (int) (end_of_base - gs->name),
569 gs->name);
570
Brandon Williams0281e482016-12-16 11:03:20 -0800571 /* Add options */
Brandon Williams74ed4372016-12-16 11:03:21 -0800572 for (i = 0; i < submodule_options.argc; i++) {
573 /*
574 * If there is a tree identifier for the submodule, add the
575 * rev after adding the submodule options but before the
576 * pathspecs. To do this we listen for the '--' and insert the
577 * sha1 before pushing the '--' onto the child process argv
578 * array.
579 */
580 if (gs->identifier &&
581 !strcmp("--", submodule_options.argv[i])) {
582 argv_array_push(&cp.args, sha1_to_hex(gs->identifier));
583 }
584
Brandon Williams0281e482016-12-16 11:03:20 -0800585 argv_array_push(&cp.args, submodule_options.argv[i]);
Brandon Williams74ed4372016-12-16 11:03:21 -0800586 }
Brandon Williams0281e482016-12-16 11:03:20 -0800587
588 cp.git_cmd = 1;
589 cp.dir = gs->path;
590
591 /*
592 * Capture output to output buffer and check the return code from the
593 * child process. A '0' indicates a hit, a '1' indicates no hit and
594 * anything else is an error.
595 */
596 status = capture_command(&cp, &w->out, 0);
597 if (status && (status != 1)) {
598 /* flush the buffer */
599 write_or_die(1, w->out.buf, w->out.len);
600 die("process for submodule '%s' failed with exit code: %d",
601 gs->name, status);
602 }
603
604 /* invert the return code to make a hit equal to 1 */
605 return !status;
606}
607
608/*
609 * Prep grep structures for a submodule grep
610 * sha1: the sha1 of the submodule or NULL if using the working tree
611 * filename: name of the submodule including tree name of parent
612 * path: location of the submodule
613 */
614static int grep_submodule(struct grep_opt *opt, const unsigned char *sha1,
615 const char *filename, const char *path)
616{
617 if (!is_submodule_initialized(path))
618 return 0;
Brandon Williamse6fac7f2016-12-16 11:03:22 -0800619 if (!is_submodule_populated(path)) {
620 /*
621 * If searching history, check for the presense of the
622 * submodule's gitdir before skipping the submodule.
623 */
624 if (sha1) {
625 const struct submodule *sub =
626 submodule_from_path(null_sha1, path);
627 if (sub)
628 path = git_path("modules/%s", sub->name);
629
630 if (!(is_directory(path) && is_git_directory(path)))
631 return 0;
632 } else {
633 return 0;
634 }
635 }
Brandon Williams0281e482016-12-16 11:03:20 -0800636
637#ifndef NO_PTHREADS
638 if (num_threads) {
639 add_work(opt, GREP_SOURCE_SUBMODULE, filename, path, sha1);
640 return 0;
641 } else
642#endif
643 {
644 struct work_item w;
645 int hit;
646
647 grep_source_init(&w.source, GREP_SOURCE_SUBMODULE,
648 filename, path, sha1);
649 strbuf_init(&w.out, 0);
650 opt->output_priv = &w;
651 hit = grep_submodule_launch(opt, &w.source);
652
653 write_or_die(1, w.out.buf, w.out.len);
654
655 grep_source_clear(&w.source);
656 strbuf_release(&w.out);
657 return hit;
658 }
659}
660
661static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec,
662 int cached)
Junio C Hamano5010cb52006-04-30 23:28:15 -0700663{
664 int hit = 0;
665 int nr;
Brandon Williams0281e482016-12-16 11:03:20 -0800666 struct strbuf name = STRBUF_INIT;
667 int name_base_len = 0;
668 if (super_prefix) {
669 name_base_len = strlen(super_prefix);
670 strbuf_addstr(&name, super_prefix);
671 }
672
Junio C Hamano5010cb52006-04-30 23:28:15 -0700673 read_cache();
674
675 for (nr = 0; nr < active_nr; nr++) {
Nguyễn Thái Ngọc Duy9c5e6c82013-07-09 22:29:00 +0700676 const struct cache_entry *ce = active_cache[nr];
Brandon Williams0281e482016-12-16 11:03:20 -0800677 strbuf_setlen(&name, name_base_len);
678 strbuf_addstr(&name, ce->name);
679
680 if (S_ISREG(ce->ce_mode) &&
681 match_pathspec(pathspec, name.buf, name.len, 0, NULL,
682 S_ISDIR(ce->ce_mode) ||
683 S_ISGITLINK(ce->ce_mode))) {
684 /*
685 * If CE_VALID is on, we assume worktree file and its
686 * cache entry are identical, even if worktree file has
687 * been modified, so use cache version instead
688 */
689 if (cached || (ce->ce_flags & CE_VALID) ||
690 ce_skip_worktree(ce)) {
691 if (ce_stage(ce) || ce_intent_to_add(ce))
692 continue;
693 hit |= grep_sha1(opt, ce->oid.hash, ce->name,
694 0, ce->name);
695 } else {
696 hit |= grep_file(opt, ce->name);
697 }
698 } else if (recurse_submodules && S_ISGITLINK(ce->ce_mode) &&
699 submodule_path_match(pathspec, name.buf, NULL)) {
700 hit |= grep_submodule(opt, NULL, ce->name, ce->name);
701 } else {
Junio C Hamano5010cb52006-04-30 23:28:15 -0700702 continue;
Junio C Hamano36f25872006-11-26 12:47:52 -0800703 }
Brandon Williams0281e482016-12-16 11:03:20 -0800704
Junio C Hamano36f25872006-11-26 12:47:52 -0800705 if (ce_stage(ce)) {
706 do {
707 nr++;
708 } while (nr < active_nr &&
709 !strcmp(ce->name, active_cache[nr]->name));
710 nr--; /* compensate for loop control */
711 }
Junio C Hamanoc8610a22010-01-25 15:37:23 -0800712 if (hit && opt->status_only)
713 break;
Junio C Hamano5010cb52006-04-30 23:28:15 -0700714 }
Brandon Williams0281e482016-12-16 11:03:20 -0800715
716 strbuf_release(&name);
Junio C Hamano5010cb52006-04-30 23:28:15 -0700717 return hit;
718}
719
Nguyễn Thái Ngọc Duyf34bbc12010-12-15 22:02:51 +0700720static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec,
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700721 struct tree_desc *tree, struct strbuf *base, int tn_len,
722 int check_attr)
Junio C Hamano5010cb52006-04-30 23:28:15 -0700723{
Nguyễn Thái Ngọc Duyd688cf02011-10-24 17:36:10 +1100724 int hit = 0;
725 enum interesting match = entry_not_interesting;
Linus Torvalds4c068a92006-05-30 09:45:45 -0700726 struct name_entry entry;
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700727 int old_baselen = base->len;
Brandon Williams74ed4372016-12-16 11:03:21 -0800728 struct strbuf name = STRBUF_INIT;
729 int name_base_len = 0;
730 if (super_prefix) {
731 strbuf_addstr(&name, super_prefix);
732 name_base_len = name.len;
733 }
Junio C Hamano5010cb52006-04-30 23:28:15 -0700734
Linus Torvalds4c068a92006-05-30 09:45:45 -0700735 while (tree_entry(tree, &entry)) {
Nguyễn Thái Ngọc Duy0de16332011-10-24 17:36:09 +1100736 int te_len = tree_entry_len(&entry);
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700737
Nguyễn Thái Ngọc Duyd688cf02011-10-24 17:36:10 +1100738 if (match != all_entries_interesting) {
Brandon Williams74ed4372016-12-16 11:03:21 -0800739 strbuf_addstr(&name, base->buf + tn_len);
740 match = tree_entry_interesting(&entry, &name,
741 0, pathspec);
742 strbuf_setlen(&name, name_base_len);
743
Nguyễn Thái Ngọc Duyd688cf02011-10-24 17:36:10 +1100744 if (match == all_entries_not_interesting)
Nguyễn Thái Ngọc Duy97d0b742011-03-25 16:34:20 +0700745 break;
Nguyễn Thái Ngọc Duyd688cf02011-10-24 17:36:10 +1100746 if (match == entry_not_interesting)
Nguyễn Thái Ngọc Duy1376e502010-12-17 19:45:33 +0700747 continue;
748 }
749
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700750 strbuf_add(base, entry.path, te_len);
Junio C Hamano5010cb52006-04-30 23:28:15 -0700751
Nguyễn Thái Ngọc Duy1376e502010-12-17 19:45:33 +0700752 if (S_ISREG(entry.mode)) {
brian m. carlson7d924c92016-04-17 23:10:39 +0000753 hit |= grep_sha1(opt, entry.oid->hash, base->buf, tn_len,
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700754 check_attr ? base->buf + tn_len : NULL);
Brandon Williams74ed4372016-12-16 11:03:21 -0800755 } else if (S_ISDIR(entry.mode)) {
Nicolas Pitre21666f12007-02-26 14:55:59 -0500756 enum object_type type;
Junio C Hamano5010cb52006-04-30 23:28:15 -0700757 struct tree_desc sub;
758 void *data;
Linus Torvalds6fda5e52007-03-21 10:08:25 -0700759 unsigned long size;
760
brian m. carlson7d924c92016-04-17 23:10:39 +0000761 data = lock_and_read_sha1_file(entry.oid->hash, &type, &size);
Junio C Hamano5010cb52006-04-30 23:28:15 -0700762 if (!data)
Ævar Arnfjörð Bjarmason2fc5f9f2011-02-22 23:41:55 +0000763 die(_("unable to read tree (%s)"),
brian m. carlson7d924c92016-04-17 23:10:39 +0000764 oid_to_hex(entry.oid));
Nguyễn Thái Ngọc Duy1376e502010-12-17 19:45:33 +0700765
766 strbuf_addch(base, '/');
Linus Torvalds6fda5e52007-03-21 10:08:25 -0700767 init_tree_desc(&sub, data, size);
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700768 hit |= grep_tree(opt, pathspec, &sub, base, tn_len,
769 check_attr);
Junio C Hamano5010cb52006-04-30 23:28:15 -0700770 free(data);
Brandon Williams74ed4372016-12-16 11:03:21 -0800771 } else if (recurse_submodules && S_ISGITLINK(entry.mode)) {
772 hit |= grep_submodule(opt, entry.oid->hash, base->buf,
773 base->buf + tn_len);
Junio C Hamano5010cb52006-04-30 23:28:15 -0700774 }
Brandon Williams74ed4372016-12-16 11:03:21 -0800775
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700776 strbuf_setlen(base, old_baselen);
777
Junio C Hamanoc8610a22010-01-25 15:37:23 -0800778 if (hit && opt->status_only)
779 break;
Junio C Hamano5010cb52006-04-30 23:28:15 -0700780 }
Brandon Williams74ed4372016-12-16 11:03:21 -0800781
782 strbuf_release(&name);
Junio C Hamano5010cb52006-04-30 23:28:15 -0700783 return hit;
784}
785
Nguyễn Thái Ngọc Duyf34bbc12010-12-15 22:02:51 +0700786static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec,
Jeff King9e0c3c42014-10-15 18:42:57 -0400787 struct object *obj, const char *name, const char *path)
Junio C Hamano5010cb52006-04-30 23:28:15 -0700788{
Linus Torvalds19746322006-07-11 20:45:31 -0700789 if (obj->type == OBJ_BLOB)
brian m. carlsoned1c9972015-11-10 02:22:29 +0000790 return grep_sha1(opt, obj->oid.hash, name, 0, path);
Linus Torvalds19746322006-07-11 20:45:31 -0700791 if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) {
Junio C Hamano5010cb52006-04-30 23:28:15 -0700792 struct tree_desc tree;
793 void *data;
Linus Torvalds6fda5e52007-03-21 10:08:25 -0700794 unsigned long size;
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700795 struct strbuf base;
796 int hit, len;
797
Jeff Kingb3aeb282012-02-02 03:18:41 -0500798 grep_read_lock();
brian m. carlsonf2fd0762015-11-10 02:22:28 +0000799 data = read_object_with_reference(obj->oid.hash, tree_type,
Linus Torvalds6fda5e52007-03-21 10:08:25 -0700800 &size, NULL);
Jeff Kingb3aeb282012-02-02 03:18:41 -0500801 grep_read_unlock();
Nicolas Morey-Chaisemartin8cb57752011-08-30 15:45:38 +0200802
Junio C Hamano5010cb52006-04-30 23:28:15 -0700803 if (!data)
brian m. carlsonf2fd0762015-11-10 02:22:28 +0000804 die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid));
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700805
Brandon Williams74ed4372016-12-16 11:03:21 -0800806 /* Use parent's name as base when recursing submodules */
807 if (recurse_submodules && parent_basename)
808 name = parent_basename;
809
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700810 len = name ? strlen(name) : 0;
811 strbuf_init(&base, PATH_MAX + len + 1);
812 if (len) {
813 strbuf_add(&base, name, len);
814 strbuf_addch(&base, ':');
815 }
Linus Torvalds6fda5e52007-03-21 10:08:25 -0700816 init_tree_desc(&tree, data, size);
Nguyễn Thái Ngọc Duy55c61682012-10-12 17:49:38 +0700817 hit = grep_tree(opt, pathspec, &tree, &base, base.len,
818 obj->type == OBJ_COMMIT);
Nguyễn Thái Ngọc Duye5e062b2010-12-17 19:44:25 +0700819 strbuf_release(&base);
Junio C Hamano5010cb52006-04-30 23:28:15 -0700820 free(data);
821 return hit;
822 }
Ævar Arnfjörð Bjarmason2fc5f9f2011-02-22 23:41:55 +0000823 die(_("unable to grep from object of type %s"), typename(obj->type));
Junio C Hamano5010cb52006-04-30 23:28:15 -0700824}
825
Nguyễn Thái Ngọc Duyf34bbc12010-12-15 22:02:51 +0700826static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
Jonathan Nieder30d00c32010-06-12 11:31:18 -0500827 const struct object_array *list)
828{
829 unsigned int i;
830 int hit = 0;
831 const unsigned int nr = list->nr;
832
833 for (i = 0; i < nr; i++) {
834 struct object *real_obj;
835 real_obj = deref_tag(list->objects[i].item, NULL, 0);
Brandon Williams74ed4372016-12-16 11:03:21 -0800836
837 /* load the gitmodules file for this rev */
838 if (recurse_submodules) {
839 submodule_free();
840 gitmodules_config_sha1(real_obj->oid.hash);
841 }
Jeff King9e0c3c42014-10-15 18:42:57 -0400842 if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path)) {
Jonathan Nieder30d00c32010-06-12 11:31:18 -0500843 hit = 1;
844 if (opt->status_only)
845 break;
846 }
847 }
848 return hit;
849}
850
Junio C Hamanodbfae862011-10-04 18:40:41 -0700851static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
Jeff King85975c02016-03-07 10:51:21 -0500852 int exc_std, int use_index)
Junio C Hamano59332d12010-02-06 10:40:08 -0800853{
854 struct dir_struct dir;
855 int i, hit = 0;
856
857 memset(&dir, 0, sizeof(dir));
Jeff King85975c02016-03-07 10:51:21 -0500858 if (!use_index)
859 dir.flags |= DIR_NO_GITLINKS;
Junio C Hamano0a93fb82011-09-27 13:43:12 -0700860 if (exc_std)
861 setup_standard_excludes(&dir);
Junio C Hamano59332d12010-02-06 10:40:08 -0800862
Nguyễn Thái Ngọc Duy7327d3d2013-07-14 15:35:55 +0700863 fill_directory(&dir, pathspec);
Junio C Hamano59332d12010-02-06 10:40:08 -0800864 for (i = 0; i < dir.nr; i++) {
Nguyễn Thái Ngọc Duyebb32892014-01-24 20:40:29 +0700865 if (!dir_path_match(dir.entries[i], pathspec, 0, NULL))
Junio C Hamano9d8b8312011-02-16 14:39:00 -0800866 continue;
Junio C Hamano59332d12010-02-06 10:40:08 -0800867 hit |= grep_file(opt, dir.entries[i]->name);
868 if (hit && opt->status_only)
869 break;
870 }
Junio C Hamano59332d12010-02-06 10:40:08 -0800871 return hit;
872}
873
René Scharfeff3c7f92009-05-21 00:05:22 +0200874static int context_callback(const struct option *opt, const char *arg,
875 int unset)
René Scharfe3e230fa2009-05-07 21:46:48 +0200876{
877 struct grep_opt *grep_opt = opt->value;
878 int value;
879 const char *endp;
Junio C Hamano5010cb52006-04-30 23:28:15 -0700880
René Scharfe3e230fa2009-05-07 21:46:48 +0200881 if (unset) {
882 grep_opt->pre_context = grep_opt->post_context = 0;
883 return 0;
884 }
885 value = strtol(arg, (char **)&endp, 10);
886 if (*endp) {
Ævar Arnfjörð Bjarmason2fc5f9f2011-02-22 23:41:55 +0000887 return error(_("switch `%c' expects a numerical value"),
René Scharfe3e230fa2009-05-07 21:46:48 +0200888 opt->short_name);
889 }
890 grep_opt->pre_context = grep_opt->post_context = value;
891 return 0;
892}
893
René Scharfeff3c7f92009-05-21 00:05:22 +0200894static int file_callback(const struct option *opt, const char *arg, int unset)
René Scharfe3e230fa2009-05-07 21:46:48 +0200895{
896 struct grep_opt *grep_opt = opt->value;
René Scharfec41dd2f2011-03-19 19:33:15 +0100897 int from_stdin = !strcmp(arg, "-");
René Scharfe3e230fa2009-05-07 21:46:48 +0200898 FILE *patterns;
899 int lno = 0;
Matt Kraaicfe370c2009-10-16 07:13:25 -0700900 struct strbuf sb = STRBUF_INIT;
René Scharfe3e230fa2009-05-07 21:46:48 +0200901
René Scharfec41dd2f2011-03-19 19:33:15 +0100902 patterns = from_stdin ? stdin : fopen(arg, "r");
René Scharfe3e230fa2009-05-07 21:46:48 +0200903 if (!patterns)
Ævar Arnfjörð Bjarmason2fc5f9f2011-02-22 23:41:55 +0000904 die_errno(_("cannot open '%s'"), arg);
Junio C Hamanoa5518432015-10-28 13:53:47 -0700905 while (strbuf_getline(&sb, patterns) == 0) {
René Scharfe3e230fa2009-05-07 21:46:48 +0200906 /* ignore empty line like grep does */
907 if (sb.len == 0)
908 continue;
René Scharfeed40a092010-05-22 23:43:43 +0200909
René Scharfeec830612012-05-21 18:10:09 +0200910 append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno,
911 GREP_PATTERN);
René Scharfe3e230fa2009-05-07 21:46:48 +0200912 }
René Scharfec41dd2f2011-03-19 19:33:15 +0100913 if (!from_stdin)
914 fclose(patterns);
René Scharfe3e230fa2009-05-07 21:46:48 +0200915 strbuf_release(&sb);
916 return 0;
917}
918
René Scharfeff3c7f92009-05-21 00:05:22 +0200919static int not_callback(const struct option *opt, const char *arg, int unset)
René Scharfe3e230fa2009-05-07 21:46:48 +0200920{
921 struct grep_opt *grep_opt = opt->value;
922 append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT);
923 return 0;
924}
925
René Scharfeff3c7f92009-05-21 00:05:22 +0200926static int and_callback(const struct option *opt, const char *arg, int unset)
René Scharfe3e230fa2009-05-07 21:46:48 +0200927{
928 struct grep_opt *grep_opt = opt->value;
929 append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND);
930 return 0;
931}
932
René Scharfeff3c7f92009-05-21 00:05:22 +0200933static int open_callback(const struct option *opt, const char *arg, int unset)
René Scharfe3e230fa2009-05-07 21:46:48 +0200934{
935 struct grep_opt *grep_opt = opt->value;
936 append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN);
937 return 0;
938}
939
René Scharfeff3c7f92009-05-21 00:05:22 +0200940static int close_callback(const struct option *opt, const char *arg, int unset)
René Scharfe3e230fa2009-05-07 21:46:48 +0200941{
942 struct grep_opt *grep_opt = opt->value;
943 append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN);
944 return 0;
945}
946
René Scharfeff3c7f92009-05-21 00:05:22 +0200947static int pattern_callback(const struct option *opt, const char *arg,
948 int unset)
René Scharfe3e230fa2009-05-07 21:46:48 +0200949{
950 struct grep_opt *grep_opt = opt->value;
951 append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
952 return 0;
953}
954
Linus Torvaldsa633fca2006-07-28 22:44:25 -0700955int cmd_grep(int argc, const char **argv, const char *prefix)
Junio C Hamano5010cb52006-04-30 23:28:15 -0700956{
Junio C Hamano5010cb52006-04-30 23:28:15 -0700957 int hit = 0;
Junio C Hamano0a93fb82011-09-27 13:43:12 -0700958 int cached = 0, untracked = 0, opt_exclude = -1;
Junio C Hamano5acd64e2006-05-08 23:55:47 -0700959 int seen_dashdash = 0;
Junio C Hamanobbc09c22010-01-12 19:06:41 -0800960 int external_grep_allowed__ignored;
Johannes Schindelin0af88c12010-06-12 11:39:46 -0500961 const char *show_in_pager = NULL, *default_pager = "dummy";
Junio C Hamano5010cb52006-04-30 23:28:15 -0700962 struct grep_opt opt;
Thiago Farina3cd47452010-08-28 23:04:17 -0300963 struct object_array list = OBJECT_ARRAY_INIT;
Nguyễn Thái Ngọc Duyf34bbc12010-12-15 22:02:51 +0700964 struct pathspec pathspec;
Thiago Farina183113a2010-07-04 16:46:19 -0300965 struct string_list path_list = STRING_LIST_INIT_NODUP;
Junio C Hamano5acd64e2006-05-08 23:55:47 -0700966 int i;
René Scharfe3e230fa2009-05-07 21:46:48 +0200967 int dummy;
Nguyễn Thái Ngọc Duyff38d1a2010-08-05 22:06:39 -0500968 int use_index = 1;
J Smith84befcd2012-08-03 10:53:50 -0400969 int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
Junio C Hamanocca2c172011-05-09 18:48:36 -0700970
René Scharfe3e230fa2009-05-07 21:46:48 +0200971 struct option options[] = {
Stefan Bellerd5d09d42013-08-03 13:51:19 +0200972 OPT_BOOL(0, "cached", &cached,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700973 N_("search in index instead of in the work tree")),
René Scharfecbb08c22012-02-28 20:06:09 +0100974 OPT_NEGBIT(0, "no-index", &use_index,
Nguyễn Thái Ngọc Duyf63cf8c2012-08-20 19:32:55 +0700975 N_("find in contents not managed by git"), 1),
Stefan Bellerd5d09d42013-08-03 13:51:19 +0200976 OPT_BOOL(0, "untracked", &untracked,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700977 N_("search in both tracked and untracked files")),
Junio C Hamano0a93fb82011-09-27 13:43:12 -0700978 OPT_SET_INT(0, "exclude-standard", &opt_exclude,
Nguyễn Thái Ngọc Duy77fdb8a2015-02-27 21:01:58 +0700979 N_("ignore files specified via '.gitignore'"), 1),
Brandon Williams0281e482016-12-16 11:03:20 -0800980 OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
981 N_("recursivley search in each submodule")),
Brandon Williams74ed4372016-12-16 11:03:21 -0800982 OPT_STRING(0, "parent-basename", &parent_basename,
983 N_("basename"),
984 N_("prepend parent project's basename to output")),
René Scharfe3e230fa2009-05-07 21:46:48 +0200985 OPT_GROUP(""),
Stefan Bellerd5d09d42013-08-03 13:51:19 +0200986 OPT_BOOL('v', "invert-match", &opt.invert,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700987 N_("show non-matching lines")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +0200988 OPT_BOOL('i', "ignore-case", &opt.ignore_case,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700989 N_("case insensitive matching")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +0200990 OPT_BOOL('w', "word-regexp", &opt.word_regexp,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700991 N_("match patterns only at word boundaries")),
René Scharfe3e230fa2009-05-07 21:46:48 +0200992 OPT_SET_INT('a', "text", &opt.binary,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700993 N_("process binary files as text"), GREP_BINARY_TEXT),
René Scharfe3e230fa2009-05-07 21:46:48 +0200994 OPT_SET_INT('I', NULL, &opt.binary,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700995 N_("don't match patterns in binary files"),
René Scharfe3e230fa2009-05-07 21:46:48 +0200996 GREP_BINARY_NOMATCH),
Jeff King335ec3b2013-05-10 17:10:15 +0200997 OPT_BOOL(0, "textconv", &opt.allow_textconv,
998 N_("process binary files with textconv filters")),
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +0700999 { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
1000 N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
Michał Kiedrowicza91f4532009-07-22 19:52:15 +02001001 NULL, 1 },
René Scharfe3e230fa2009-05-07 21:46:48 +02001002 OPT_GROUP(""),
J Smith84befcd2012-08-03 10:53:50 -04001003 OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001004 N_("use extended POSIX regular expressions"),
J Smith84befcd2012-08-03 10:53:50 -04001005 GREP_PATTERN_TYPE_ERE),
1006 OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001007 N_("use basic POSIX regular expressions (default)"),
J Smith84befcd2012-08-03 10:53:50 -04001008 GREP_PATTERN_TYPE_BRE),
1009 OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001010 N_("interpret patterns as fixed strings"),
J Smith84befcd2012-08-03 10:53:50 -04001011 GREP_PATTERN_TYPE_FIXED),
1012 OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001013 N_("use Perl-compatible regular expressions"),
J Smith84befcd2012-08-03 10:53:50 -04001014 GREP_PATTERN_TYPE_PCRE),
René Scharfe3e230fa2009-05-07 21:46:48 +02001015 OPT_GROUP(""),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001016 OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001017 OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
1018 OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
René Scharfe3e230fa2009-05-07 21:46:48 +02001019 OPT_NEGBIT(0, "full-name", &opt.relative,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001020 N_("show filenames relative to top directory"), 1),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001021 OPT_BOOL('l', "files-with-matches", &opt.name_only,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001022 N_("show only filenames instead of matching lines")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001023 OPT_BOOL(0, "name-only", &opt.name_only,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001024 N_("synonym for --files-with-matches")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001025 OPT_BOOL('L', "files-without-match",
René Scharfe3e230fa2009-05-07 21:46:48 +02001026 &opt.unmatch_name_only,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001027 N_("show only the names of files without match")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001028 OPT_BOOL('z', "null", &opt.null_following_name,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001029 N_("print NUL after filenames")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001030 OPT_BOOL('c', "count", &opt.count,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001031 N_("show the number of matches instead of matching lines")),
1032 OPT__COLOR(&opt.color, N_("highlight matches")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001033 OPT_BOOL(0, "break", &opt.file_break,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001034 N_("print empty line between matches from different files")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001035 OPT_BOOL(0, "heading", &opt.heading,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001036 N_("show filename only once above matches from same file")),
René Scharfe3e230fa2009-05-07 21:46:48 +02001037 OPT_GROUP(""),
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001038 OPT_CALLBACK('C', "context", &opt, N_("n"),
1039 N_("show <n> context lines before and after matches"),
René Scharfe3e230fa2009-05-07 21:46:48 +02001040 context_callback),
René Scharfe317f63c2011-08-01 19:22:52 +02001041 OPT_INTEGER('B', "before-context", &opt.pre_context,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001042 N_("show <n> context lines before matches")),
René Scharfe317f63c2011-08-01 19:22:52 +02001043 OPT_INTEGER('A', "after-context", &opt.post_context,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001044 N_("show <n> context lines after matches")),
Victor Leschuk89f09dd2015-12-15 18:31:39 +03001045 OPT_INTEGER(0, "threads", &num_threads,
1046 N_("use <n> worker threads")),
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001047 OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
René Scharfe3e230fa2009-05-07 21:46:48 +02001048 context_callback),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001049 OPT_BOOL('p', "show-function", &opt.funcname,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001050 N_("show a line with the function name before matches")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001051 OPT_BOOL('W', "function-context", &opt.funcbody,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001052 N_("show the surrounding function")),
René Scharfe3e230fa2009-05-07 21:46:48 +02001053 OPT_GROUP(""),
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001054 OPT_CALLBACK('f', NULL, &opt, N_("file"),
1055 N_("read patterns from file"), file_callback),
1056 { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
1057 N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback },
René Scharfe3e230fa2009-05-07 21:46:48 +02001058 { OPTION_CALLBACK, 0, "and", &opt, NULL,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001059 N_("combine patterns specified with -e"),
René Scharfe3e230fa2009-05-07 21:46:48 +02001060 PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback },
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001061 OPT_BOOL(0, "or", &dummy, ""),
René Scharfe3e230fa2009-05-07 21:46:48 +02001062 { OPTION_CALLBACK, 0, "not", &opt, NULL, "",
1063 PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback },
1064 { OPTION_CALLBACK, '(', NULL, &opt, NULL, "",
1065 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
1066 open_callback },
1067 { OPTION_CALLBACK, ')', NULL, &opt, NULL, "",
1068 PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH,
1069 close_callback },
René Scharfed52ee6e2010-11-08 19:06:54 +01001070 OPT__QUIET(&opt.status_only,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001071 N_("indicate hit with exit status without output")),
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001072 OPT_BOOL(0, "all-match", &opt.all_match,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001073 N_("show only matches from files that match all patterns")),
Junio C Hamano17bf35a2012-09-13 14:21:44 -07001074 { OPTION_SET_INT, 0, "debug", &opt.debug, NULL,
Junio C Hamano3d7535e2012-09-18 14:37:53 -07001075 N_("show parse tree for grep expression"),
Junio C Hamano17bf35a2012-09-13 14:21:44 -07001076 PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 },
René Scharfe3e230fa2009-05-07 21:46:48 +02001077 OPT_GROUP(""),
Johannes Schindelin0af88c12010-06-12 11:39:46 -05001078 { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager,
Nguyễn Thái Ngọc Duy4b407bc2012-08-20 19:32:15 +07001079 N_("pager"), N_("show matching files in the pager"),
Johannes Schindelin0af88c12010-06-12 11:39:46 -05001080 PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager },
Stefan Bellerd5d09d42013-08-03 13:51:19 +02001081 OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored,
1082 N_("allow calling of grep(1) (ignored by this build)")),
René Scharfe3e230fa2009-05-07 21:46:48 +02001083 OPT_END()
1084 };
Junio C Hamano5010cb52006-04-30 23:28:15 -07001085
Junio C Hamano15fabd12012-10-09 16:04:12 -07001086 init_grep_defaults();
1087 git_config(grep_cmd_config, NULL);
1088 grep_init(&opt, prefix);
Brandon Williams0281e482016-12-16 11:03:20 -08001089 super_prefix = get_super_prefix();
René Scharfe7e8f59d2009-03-07 13:32:32 +01001090
Junio C Hamano5010cb52006-04-30 23:28:15 -07001091 /*
Junio C Hamano5acd64e2006-05-08 23:55:47 -07001092 * If there is no -- then the paths must exist in the working
1093 * tree. If there is no explicit pattern specified with -e or
1094 * -f, we take the first unrecognized non option to be the
1095 * pattern, but then what follows it must be zero or more
1096 * valid refs up to the -- (if exists), and then existing
1097 * paths. If there is an explicit pattern, then the first
Pavel Roskin82e5a822006-07-10 01:50:18 -04001098 * unrecognized non option is the beginning of the refs list
Junio C Hamano5acd64e2006-05-08 23:55:47 -07001099 * that continues up to the -- (if exists), and then paths.
Junio C Hamano5010cb52006-04-30 23:28:15 -07001100 */
Stephen Boyd37782922009-05-23 11:53:12 -07001101 argc = parse_options(argc, argv, prefix, options, grep_usage,
René Scharfe3e230fa2009-05-07 21:46:48 +02001102 PARSE_OPT_KEEP_DASHDASH |
René Scharfe44415492015-11-17 11:25:53 +01001103 PARSE_OPT_STOP_AT_NON_OPTION);
Junio C Hamanoc5c31d32012-10-03 14:47:48 -07001104 grep_commit_pattern_type(pattern_type_arg, &opt);
Junio C Hamano5acd64e2006-05-08 23:55:47 -07001105
Thomas Gummererecd9ba62016-01-12 11:40:26 +01001106 if (use_index && !startup_info->have_repository) {
1107 int fallback = 0;
1108 git_config_get_bool("grep.fallbacktonoindex", &fallback);
1109 if (fallback)
1110 use_index = 0;
1111 else
1112 /* die the same way as if we did it at the beginning */
1113 setup_git_directory();
1114 }
Junio C Hamano59332d12010-02-06 10:40:08 -08001115
Jeff King1123c672010-02-06 23:44:15 -05001116 /*
1117 * skip a -- separator; we know it cannot be
1118 * separating revisions from pathnames if
1119 * we haven't even had any patterns yet
1120 */
1121 if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) {
1122 argv++;
1123 argc--;
1124 }
1125
René Scharfe3e230fa2009-05-07 21:46:48 +02001126 /* First unrecognized non-option token */
1127 if (argc > 0 && !opt.pattern_list) {
1128 append_grep_pattern(&opt, argv[0], "command line", 0,
1129 GREP_PATTERN);
1130 argv++;
1131 argc--;
Junio C Hamano5010cb52006-04-30 23:28:15 -07001132 }
Junio C Hamano5acd64e2006-05-08 23:55:47 -07001133
Johannes Schindelin0af88c12010-06-12 11:39:46 -05001134 if (show_in_pager == default_pager)
1135 show_in_pager = git_pager(1);
Johannes Schindelin678e4842010-06-12 11:36:51 -05001136 if (show_in_pager) {
Nazri Ramliye7b082a2010-07-02 21:55:06 -05001137 opt.color = 0;
Johannes Schindelin0af88c12010-06-12 11:39:46 -05001138 opt.name_only = 1;
1139 opt.null_following_name = 1;
1140 opt.output_priv = &path_list;
1141 opt.output = append_path;
Julian Phillips0c72cea2010-06-26 00:41:39 +01001142 string_list_append(&path_list, show_in_pager);
Johannes Schindelin678e4842010-06-12 11:36:51 -05001143 }
1144
Junio C Hamanof9b9faf2006-05-02 15:40:49 -07001145 if (!opt.pattern_list)
Ævar Arnfjörð Bjarmason2fc5f9f2011-02-22 23:41:55 +00001146 die(_("no pattern given."));
Brian Collins5183bf62009-11-06 01:22:35 -08001147 if (!opt.fixed && opt.ignore_case)
1148 opt.regflags |= REG_ICASE;
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +01001149
Junio C Hamano83b5d2f2006-09-17 16:02:52 -07001150 compile_grep_patterns(&opt);
Junio C Hamano5acd64e2006-05-08 23:55:47 -07001151
Jeff Kingb5b81132017-02-14 01:05:55 -05001152 /*
1153 * We have to find "--" in a separate pass, because its presence
1154 * influences how we will parse arguments that come before it.
1155 */
1156 for (i = 0; i < argc; i++) {
1157 if (!strcmp(argv[i], "--")) {
1158 seen_dashdash = 1;
1159 break;
1160 }
1161 }
1162
1163 /*
1164 * Resolve any rev arguments. If we have a dashdash, then everything up
1165 * to it must resolve as a rev. If not, then we stop at the first
1166 * non-rev and assume everything else is a path.
1167 */
René Scharfe3e230fa2009-05-07 21:46:48 +02001168 for (i = 0; i < argc; i++) {
Junio C Hamano5acd64e2006-05-08 23:55:47 -07001169 const char *arg = argv[i];
Junio C Hamano13626712006-05-01 15:58:29 -07001170 unsigned char sha1[20];
Michael J Gruberafa15f32013-05-10 17:10:16 +02001171 struct object_context oc;
Jeff King20d64212017-02-14 01:04:17 -05001172 struct object *object;
1173
Jonathan Tandca3b5f2017-02-14 01:03:03 -05001174 if (!strcmp(arg, "--")) {
1175 i++;
Jonathan Tandca3b5f2017-02-14 01:03:03 -05001176 break;
1177 }
Jeff King20d64212017-02-14 01:04:17 -05001178
Jeff Kingb5b81132017-02-14 01:05:55 -05001179 if (get_sha1_with_context(arg, 0, sha1, &oc)) {
1180 if (seen_dashdash)
1181 die(_("unable to resolve revision: %s"), arg);
Jeff King20d64212017-02-14 01:04:17 -05001182 break;
Jeff Kingb5b81132017-02-14 01:05:55 -05001183 }
Jeff King20d64212017-02-14 01:04:17 -05001184
1185 object = parse_object_or_die(sha1, arg);
1186 if (!seen_dashdash)
1187 verify_non_filename(prefix, arg);
1188 add_object_array_with_path(object, arg, &list, oc.mode, oc.path);
Junio C Hamano13626712006-05-01 15:58:29 -07001189 }
Junio C Hamano5acd64e2006-05-08 23:55:47 -07001190
Jeff Kingb5b81132017-02-14 01:05:55 -05001191 /*
1192 * Anything left over is presumed to be a path. But in the non-dashdash
1193 * "do what I mean" case, we verify and complain when that isn't true.
1194 */
Jeff Kinga0fe2b02017-02-14 01:02:38 -05001195 if (!seen_dashdash) {
1196 int j;
1197 for (j = i; j < argc; j++)
1198 verify_filename(prefix, argv[j], j == i);
1199 }
1200
1201 parse_pathspec(&pathspec, 0,
1202 PATHSPEC_PREFER_CWD |
1203 (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0),
1204 prefix, argv + i);
1205 pathspec.max_depth = opt.max_depth;
1206 pathspec.recursive = 1;
1207
Thomas Rast53b8d932011-12-12 22:16:08 +01001208#ifndef NO_PTHREADS
Victor Leschuk044b1f32015-12-15 18:31:39 +03001209 if (list.nr || cached || show_in_pager)
Victor Leschuk89f09dd2015-12-15 18:31:39 +03001210 num_threads = 0;
1211 else if (num_threads == 0)
1212 num_threads = GREP_NUM_THREADS_DEFAULT;
1213 else if (num_threads < 0)
1214 die(_("invalid number of threads specified (%d)"), num_threads);
Thomas Rast53b8d932011-12-12 22:16:08 +01001215#else
Victor Leschuk89f09dd2015-12-15 18:31:39 +03001216 num_threads = 0;
Thomas Rast53b8d932011-12-12 22:16:08 +01001217#endif
1218
Thomas Rast53b8d932011-12-12 22:16:08 +01001219#ifndef NO_PTHREADS
Victor Leschuk89f09dd2015-12-15 18:31:39 +03001220 if (num_threads) {
Albert Yale50dd0f22012-01-23 18:52:44 +01001221 if (!(opt.name_only || opt.unmatch_name_only || opt.count)
1222 && (opt.pre_context || opt.post_context ||
1223 opt.file_break || opt.funcbody))
Thomas Rast53b8d932011-12-12 22:16:08 +01001224 skip_first_line = 1;
1225 start_threads(&opt);
1226 }
1227#endif
1228
Brandon Williams0281e482016-12-16 11:03:20 -08001229 if (recurse_submodules) {
1230 gitmodules_config();
1231 compile_submodule_options(&opt, &pathspec, cached, untracked,
1232 opt_exclude, use_index,
1233 pattern_type_arg);
1234 }
1235
Johannes Schindelin678e4842010-06-12 11:36:51 -05001236 if (show_in_pager && (cached || list.nr))
Ævar Arnfjörð Bjarmasone4fe4ba2011-02-22 23:41:56 +00001237 die(_("--open-files-in-pager only works on the worktree"));
Johannes Schindelin678e4842010-06-12 11:36:51 -05001238
1239 if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) {
1240 const char *pager = path_list.items[0].string;
1241 int len = strlen(pager);
1242
1243 if (len > 4 && is_dir_sep(pager[len - 5]))
1244 pager += len - 4;
1245
Johannes Schindelinf7febbe2011-02-08 00:17:24 -06001246 if (opt.ignore_case && !strcmp("less", pager))
1247 string_list_append(&path_list, "-I");
1248
Johannes Schindelin678e4842010-06-12 11:36:51 -05001249 if (!strcmp("less", pager) || !strcmp("vi", pager)) {
1250 struct strbuf buf = STRBUF_INIT;
1251 strbuf_addf(&buf, "+/%s%s",
1252 strcmp("less", pager) ? "" : "*",
1253 opt.pattern_list->pattern);
Julian Phillips0c72cea2010-06-26 00:41:39 +01001254 string_list_append(&path_list, buf.buf);
Johannes Schindelin678e4842010-06-12 11:36:51 -05001255 strbuf_detach(&buf, NULL);
1256 }
1257 }
1258
Brandon Williams74ed4372016-12-16 11:03:21 -08001259 if (recurse_submodules && (!use_index || untracked))
Brandon Williams0281e482016-12-16 11:03:20 -08001260 die(_("option not supported with --recurse-submodules."));
1261
Wilhelm Schuermannc2048f02015-03-18 19:00:13 +01001262 if (!show_in_pager && !opt.status_only)
Johannes Schindelin678e4842010-06-12 11:36:51 -05001263 setup_pager();
1264
Junio C Hamano0a93fb82011-09-27 13:43:12 -07001265 if (!use_index && (untracked || cached))
Junio C Hamanodbfae862011-10-04 18:40:41 -07001266 die(_("--cached or --untracked cannot be used with --no-index."));
Johannes Schindelin678e4842010-06-12 11:36:51 -05001267
Junio C Hamano0a93fb82011-09-27 13:43:12 -07001268 if (!use_index || untracked) {
Junio C Hamano0a93fb82011-09-27 13:43:12 -07001269 int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
Junio C Hamano59332d12010-02-06 10:40:08 -08001270 if (list.nr)
Junio C Hamanodbfae862011-10-04 18:40:41 -07001271 die(_("--no-index or --untracked cannot be used with revs."));
Jeff King85975c02016-03-07 10:51:21 -05001272 hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
Junio C Hamanodbfae862011-10-04 18:40:41 -07001273 } else if (0 <= opt_exclude) {
Junio C Hamano9fddaf72011-10-15 20:26:52 -07001274 die(_("--[no-]exclude-standard cannot be used for tracked contents."));
Johannes Schindelin685359c2010-06-12 11:32:11 -05001275 } else if (!list.nr) {
Nguyễn Thái Ngọc Duy6577f542008-08-28 20:04:30 +07001276 if (!cached)
1277 setup_work_tree();
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +01001278
Nguyễn Thái Ngọc Duyf34bbc12010-12-15 22:02:51 +07001279 hit = grep_cache(&opt, &pathspec, cached);
Johannes Schindelin685359c2010-06-12 11:32:11 -05001280 } else {
1281 if (cached)
Ævar Arnfjörð Bjarmason2fc5f9f2011-02-22 23:41:55 +00001282 die(_("both --cached and trees are given."));
Nguyễn Thái Ngọc Duyf34bbc12010-12-15 22:02:51 +07001283 hit = grep_objects(&opt, &pathspec, &list);
Junio C Hamano5010cb52006-04-30 23:28:15 -07001284 }
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +01001285
Victor Leschuk89f09dd2015-12-15 18:31:39 +03001286 if (num_threads)
Fredrik Kuivinen5b594f42010-01-25 23:51:39 +01001287 hit |= wait_all();
Johannes Schindelin678e4842010-06-12 11:36:51 -05001288 if (hit && show_in_pager)
1289 run_pager(&opt, prefix);
Junio C Hamanob48fb5b2006-09-27 16:27:10 -07001290 free_grep_patterns(&opt);
Junio C Hamano5010cb52006-04-30 23:28:15 -07001291 return !hit;
1292}