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Commit | Line | Data |
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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" |
5b594f45 | 20 | |
3e230fa1 | 21 | static char const * const grep_usage[] = { |
4b407bc5 | 22 | N_("git grep [options] [-e] <pattern> [<rev>...] [[--] <path>...]"), |
3e230fa1 RS |
23 | NULL |
24 | }; | |
25 | ||
5b594f45 FK |
26 | static int use_threads = 1; |
27 | ||
28 | #ifndef NO_PTHREADS | |
29 | #define THREADS 8 | |
30 | static pthread_t threads[THREADS]; | |
31 | ||
5b594f45 FK |
32 | /* We use one producer thread and THREADS consumer |
33 | * threads. The producer adds struct work_items to 'todo' and the | |
34 | * consumers pick work items from the same array. | |
35 | */ | |
9cba13ca | 36 | struct work_item { |
8f24a632 | 37 | struct grep_source source; |
5b594f45 FK |
38 | char done; |
39 | struct strbuf out; | |
40 | }; | |
41 | ||
42 | /* In the range [todo_done, todo_start) in 'todo' we have work_items | |
43 | * that have been or are processed by a consumer thread. We haven't | |
44 | * written the result for these to stdout yet. | |
45 | * | |
46 | * The work_items in [todo_start, todo_end) are waiting to be picked | |
47 | * up by a consumer thread. | |
48 | * | |
49 | * The ranges are modulo TODO_SIZE. | |
50 | */ | |
51 | #define TODO_SIZE 128 | |
52 | static struct work_item todo[TODO_SIZE]; | |
53 | static int todo_start; | |
54 | static int todo_end; | |
55 | static int todo_done; | |
56 | ||
57 | /* Has all work items been added? */ | |
58 | static int all_work_added; | |
59 | ||
60 | /* This lock protects all the variables above. */ | |
61 | static pthread_mutex_t grep_mutex; | |
62 | ||
1487a12b JH |
63 | static inline void grep_lock(void) |
64 | { | |
65 | if (use_threads) | |
66 | pthread_mutex_lock(&grep_mutex); | |
67 | } | |
68 | ||
69 | static inline void grep_unlock(void) | |
70 | { | |
71 | if (use_threads) | |
72 | pthread_mutex_unlock(&grep_mutex); | |
73 | } | |
74 | ||
5b594f45 FK |
75 | /* Signalled when a new work_item is added to todo. */ |
76 | static pthread_cond_t cond_add; | |
77 | ||
78 | /* Signalled when the result from one work_item is written to | |
79 | * stdout. | |
80 | */ | |
81 | static pthread_cond_t cond_write; | |
82 | ||
83 | /* Signalled when we are finished with everything. */ | |
84 | static pthread_cond_t cond_result; | |
85 | ||
08303c36 | 86 | static int skip_first_line; |
431d6e7b | 87 | |
9dd5245c | 88 | static void add_work(struct grep_opt *opt, enum grep_source_type type, |
55c61688 | 89 | const char *name, const char *path, const void *id) |
5b594f45 FK |
90 | { |
91 | grep_lock(); | |
92 | ||
93 | while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) { | |
94 | pthread_cond_wait(&cond_write, &grep_mutex); | |
95 | } | |
96 | ||
55c61688 | 97 | grep_source_init(&todo[todo_end].source, type, name, path, id); |
9dd5245c JK |
98 | if (opt->binary != GREP_BINARY_TEXT) |
99 | grep_source_load_driver(&todo[todo_end].source); | |
5b594f45 FK |
100 | todo[todo_end].done = 0; |
101 | strbuf_reset(&todo[todo_end].out); | |
102 | todo_end = (todo_end + 1) % ARRAY_SIZE(todo); | |
103 | ||
104 | pthread_cond_signal(&cond_add); | |
105 | grep_unlock(); | |
106 | } | |
107 | ||
108 | static struct work_item *get_work(void) | |
109 | { | |
110 | struct work_item *ret; | |
111 | ||
112 | grep_lock(); | |
113 | while (todo_start == todo_end && !all_work_added) { | |
114 | pthread_cond_wait(&cond_add, &grep_mutex); | |
115 | } | |
116 | ||
117 | if (todo_start == todo_end && all_work_added) { | |
118 | ret = NULL; | |
119 | } else { | |
120 | ret = &todo[todo_start]; | |
121 | todo_start = (todo_start + 1) % ARRAY_SIZE(todo); | |
122 | } | |
123 | grep_unlock(); | |
124 | return ret; | |
125 | } | |
126 | ||
5b594f45 FK |
127 | static void work_done(struct work_item *w) |
128 | { | |
129 | int old_done; | |
130 | ||
131 | grep_lock(); | |
132 | w->done = 1; | |
133 | old_done = todo_done; | |
134 | for(; todo[todo_done].done && todo_done != todo_start; | |
135 | todo_done = (todo_done+1) % ARRAY_SIZE(todo)) { | |
136 | w = &todo[todo_done]; | |
431d6e7b | 137 | if (w->out.len) { |
08303c36 RS |
138 | const char *p = w->out.buf; |
139 | size_t len = w->out.len; | |
140 | ||
141 | /* Skip the leading hunk mark of the first file. */ | |
142 | if (skip_first_line) { | |
143 | while (len) { | |
144 | len--; | |
145 | if (*p++ == '\n') | |
146 | break; | |
147 | } | |
148 | skip_first_line = 0; | |
149 | } | |
150 | ||
151 | write_or_die(1, p, len); | |
431d6e7b | 152 | } |
8f24a632 | 153 | grep_source_clear(&w->source); |
5b594f45 FK |
154 | } |
155 | ||
156 | if (old_done != todo_done) | |
157 | pthread_cond_signal(&cond_write); | |
158 | ||
159 | if (all_work_added && todo_done == todo_end) | |
160 | pthread_cond_signal(&cond_result); | |
161 | ||
162 | grep_unlock(); | |
163 | } | |
164 | ||
165 | static void *run(void *arg) | |
166 | { | |
167 | int hit = 0; | |
168 | struct grep_opt *opt = arg; | |
169 | ||
170 | while (1) { | |
171 | struct work_item *w = get_work(); | |
172 | if (!w) | |
173 | break; | |
174 | ||
175 | opt->output_priv = w; | |
8f24a632 JK |
176 | hit |= grep_source(opt, &w->source); |
177 | grep_source_clear_data(&w->source); | |
5b594f45 FK |
178 | work_done(w); |
179 | } | |
bfac23d9 DM |
180 | free_grep_patterns(arg); |
181 | free(arg); | |
5b594f45 FK |
182 | |
183 | return (void*) (intptr_t) hit; | |
184 | } | |
185 | ||
186 | static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size) | |
187 | { | |
188 | struct work_item *w = opt->output_priv; | |
189 | strbuf_add(&w->out, buf, size); | |
190 | } | |
191 | ||
192 | static void start_threads(struct grep_opt *opt) | |
193 | { | |
194 | int i; | |
195 | ||
196 | pthread_mutex_init(&grep_mutex, NULL); | |
b3aeb285 | 197 | pthread_mutex_init(&grep_read_mutex, NULL); |
0579f91d | 198 | pthread_mutex_init(&grep_attr_mutex, NULL); |
5b594f45 FK |
199 | pthread_cond_init(&cond_add, NULL); |
200 | pthread_cond_init(&cond_write, NULL); | |
201 | pthread_cond_init(&cond_result, NULL); | |
78db6ea9 | 202 | grep_use_locks = 1; |
5b594f45 FK |
203 | |
204 | for (i = 0; i < ARRAY_SIZE(todo); i++) { | |
205 | strbuf_init(&todo[i].out, 0); | |
206 | } | |
207 | ||
208 | for (i = 0; i < ARRAY_SIZE(threads); i++) { | |
209 | int err; | |
210 | struct grep_opt *o = grep_opt_dup(opt); | |
211 | o->output = strbuf_out; | |
208f5aa4 | 212 | o->debug = 0; |
5b594f45 FK |
213 | compile_grep_patterns(o); |
214 | err = pthread_create(&threads[i], NULL, run, o); | |
215 | ||
216 | if (err) | |
2fc5f9f1 | 217 | die(_("grep: failed to create thread: %s"), |
5b594f45 FK |
218 | strerror(err)); |
219 | } | |
220 | } | |
221 | ||
222 | static int wait_all(void) | |
223 | { | |
224 | int hit = 0; | |
225 | int i; | |
226 | ||
227 | grep_lock(); | |
228 | all_work_added = 1; | |
229 | ||
230 | /* Wait until all work is done. */ | |
231 | while (todo_done != todo_end) | |
232 | pthread_cond_wait(&cond_result, &grep_mutex); | |
233 | ||
234 | /* Wake up all the consumer threads so they can see that there | |
235 | * is no more work to do. | |
236 | */ | |
237 | pthread_cond_broadcast(&cond_add); | |
238 | grep_unlock(); | |
239 | ||
240 | for (i = 0; i < ARRAY_SIZE(threads); i++) { | |
241 | void *h; | |
242 | pthread_join(threads[i], &h); | |
243 | hit |= (int) (intptr_t) h; | |
244 | } | |
245 | ||
246 | pthread_mutex_destroy(&grep_mutex); | |
b3aeb285 | 247 | pthread_mutex_destroy(&grep_read_mutex); |
0579f91d | 248 | pthread_mutex_destroy(&grep_attr_mutex); |
5b594f45 FK |
249 | pthread_cond_destroy(&cond_add); |
250 | pthread_cond_destroy(&cond_write); | |
251 | pthread_cond_destroy(&cond_result); | |
78db6ea9 | 252 | grep_use_locks = 0; |
5b594f45 FK |
253 | |
254 | return hit; | |
255 | } | |
256 | #else /* !NO_PTHREADS */ | |
5b594f45 FK |
257 | |
258 | static int wait_all(void) | |
259 | { | |
260 | return 0; | |
261 | } | |
262 | #endif | |
263 | ||
15fabd1b JH |
264 | static int grep_cmd_config(const char *var, const char *value, void *cb) |
265 | { | |
266 | int st = grep_config(var, value, cb); | |
267 | if (git_color_default_config(var, value, cb) < 0) | |
268 | st = -1; | |
269 | return st; | |
270 | } | |
271 | ||
5f02d315 JH |
272 | static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) |
273 | { | |
274 | void *data; | |
275 | ||
b3aeb285 | 276 | grep_read_lock(); |
76416139 | 277 | data = read_sha1_file(sha1, type, size); |
b3aeb285 | 278 | grep_read_unlock(); |
5b594f45 FK |
279 | return data; |
280 | } | |
281 | ||
282 | static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, | |
55c61688 NTND |
283 | const char *filename, int tree_name_len, |
284 | const char *path) | |
5b594f45 FK |
285 | { |
286 | struct strbuf pathbuf = STRBUF_INIT; | |
5b594f45 | 287 | |
0d042fec | 288 | if (opt->relative && opt->prefix_length) { |
5b594f45 FK |
289 | quote_path_relative(filename + tree_name_len, -1, &pathbuf, |
290 | opt->prefix); | |
291 | strbuf_insert(&pathbuf, 0, filename, tree_name_len); | |
292 | } else { | |
293 | strbuf_addstr(&pathbuf, filename); | |
294 | } | |
295 | ||
5b594f45 FK |
296 | #ifndef NO_PTHREADS |
297 | if (use_threads) { | |
55c61688 | 298 | add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1); |
8f24a632 | 299 | strbuf_release(&pathbuf); |
5b594f45 FK |
300 | return 0; |
301 | } else | |
302 | #endif | |
303 | { | |
8f24a632 | 304 | struct grep_source gs; |
5b594f45 | 305 | int hit; |
5010cb5f | 306 | |
55c61688 | 307 | grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1); |
8f24a632 JK |
308 | strbuf_release(&pathbuf); |
309 | hit = grep_source(opt, &gs); | |
dc49cd76 | 310 | |
8f24a632 JK |
311 | grep_source_clear(&gs); |
312 | return hit; | |
5010cb5f | 313 | } |
5b594f45 FK |
314 | } |
315 | ||
316 | static int grep_file(struct grep_opt *opt, const char *filename) | |
317 | { | |
318 | struct strbuf buf = STRBUF_INIT; | |
5b594f45 | 319 | |
0d042fec | 320 | if (opt->relative && opt->prefix_length) |
5b594f45 FK |
321 | quote_path_relative(filename, -1, &buf, opt->prefix); |
322 | else | |
323 | strbuf_addstr(&buf, filename); | |
5b594f45 FK |
324 | |
325 | #ifndef NO_PTHREADS | |
326 | if (use_threads) { | |
55c61688 | 327 | add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename); |
8f24a632 | 328 | strbuf_release(&buf); |
5b594f45 FK |
329 | return 0; |
330 | } else | |
331 | #endif | |
332 | { | |
8f24a632 | 333 | struct grep_source gs; |
5b594f45 | 334 | int hit; |
5b594f45 | 335 | |
55c61688 | 336 | grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename); |
8f24a632 JK |
337 | strbuf_release(&buf); |
338 | hit = grep_source(opt, &gs); | |
339 | ||
340 | grep_source_clear(&gs); | |
5b594f45 FK |
341 | return hit; |
342 | } | |
5010cb5f JH |
343 | } |
344 | ||
678e484b JS |
345 | static void append_path(struct grep_opt *opt, const void *data, size_t len) |
346 | { | |
347 | struct string_list *path_list = opt->output_priv; | |
348 | ||
349 | if (len == 1 && *(const char *)data == '\0') | |
350 | return; | |
0c72cead | 351 | string_list_append(path_list, xstrndup(data, len)); |
678e484b JS |
352 | } |
353 | ||
354 | static void run_pager(struct grep_opt *opt, const char *prefix) | |
355 | { | |
356 | struct string_list *path_list = opt->output_priv; | |
357 | const char **argv = xmalloc(sizeof(const char *) * (path_list->nr + 1)); | |
358 | int i, status; | |
359 | ||
360 | for (i = 0; i < path_list->nr; i++) | |
361 | argv[i] = path_list->items[i].string; | |
362 | argv[path_list->nr] = NULL; | |
363 | ||
364 | if (prefix && chdir(prefix)) | |
2fc5f9f1 | 365 | die(_("Failed to chdir: %s"), prefix); |
678e484b JS |
366 | status = run_command_v_opt(argv, RUN_USING_SHELL); |
367 | if (status) | |
368 | exit(status); | |
369 | free(argv); | |
370 | } | |
371 | ||
f34bbc15 | 372 | static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int cached) |
5010cb5f JH |
373 | { |
374 | int hit = 0; | |
375 | int nr; | |
376 | read_cache(); | |
377 | ||
378 | for (nr = 0; nr < active_nr; nr++) { | |
379 | struct cache_entry *ce = active_cache[nr]; | |
7a51ed66 | 380 | if (!S_ISREG(ce->ce_mode)) |
5010cb5f | 381 | continue; |
2ed2437a | 382 | if (!match_pathspec_depth(pathspec, ce->name, ce_namelen(ce), 0, NULL)) |
5010cb5f | 383 | continue; |
57d43466 NTND |
384 | /* |
385 | * If CE_VALID is on, we assume worktree file and its cache entry | |
386 | * are identical, even if worktree file has been modified, so use | |
387 | * cache version instead | |
388 | */ | |
b4d1690d | 389 | if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) { |
36f2587f JH |
390 | if (ce_stage(ce)) |
391 | continue; | |
55c61688 | 392 | hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name); |
36f2587f | 393 | } |
5010cb5f JH |
394 | else |
395 | hit |= grep_file(opt, ce->name); | |
36f2587f JH |
396 | if (ce_stage(ce)) { |
397 | do { | |
398 | nr++; | |
399 | } while (nr < active_nr && | |
400 | !strcmp(ce->name, active_cache[nr]->name)); | |
401 | nr--; /* compensate for loop control */ | |
402 | } | |
c8610a2e JH |
403 | if (hit && opt->status_only) |
404 | break; | |
5010cb5f JH |
405 | } |
406 | return hit; | |
407 | } | |
408 | ||
f34bbc15 | 409 | static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec, |
55c61688 NTND |
410 | struct tree_desc *tree, struct strbuf *base, int tn_len, |
411 | int check_attr) | |
5010cb5f | 412 | { |
d688cf07 NTND |
413 | int hit = 0; |
414 | enum interesting match = entry_not_interesting; | |
4c068a98 | 415 | struct name_entry entry; |
e5e062b6 | 416 | int old_baselen = base->len; |
5010cb5f | 417 | |
4c068a98 | 418 | while (tree_entry(tree, &entry)) { |
0de16337 | 419 | int te_len = tree_entry_len(&entry); |
e5e062b6 | 420 | |
d688cf07 | 421 | if (match != all_entries_interesting) { |
97d0b74a | 422 | match = tree_entry_interesting(&entry, base, tn_len, pathspec); |
d688cf07 | 423 | if (match == all_entries_not_interesting) |
97d0b74a | 424 | break; |
d688cf07 | 425 | if (match == entry_not_interesting) |
1376e507 NTND |
426 | continue; |
427 | } | |
5010cb5f | 428 | |
1376e507 | 429 | strbuf_add(base, entry.path, te_len); |
e0eb889f | 430 | |
1376e507 | 431 | if (S_ISREG(entry.mode)) { |
55c61688 NTND |
432 | hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len, |
433 | check_attr ? base->buf + tn_len : NULL); | |
e5e062b6 | 434 | } |
4c068a98 | 435 | else if (S_ISDIR(entry.mode)) { |
21666f1a | 436 | enum object_type type; |
5010cb5f JH |
437 | struct tree_desc sub; |
438 | void *data; | |
6fda5e51 LT |
439 | unsigned long size; |
440 | ||
5f02d315 | 441 | data = lock_and_read_sha1_file(entry.sha1, &type, &size); |
5010cb5f | 442 | if (!data) |
2fc5f9f1 | 443 | die(_("unable to read tree (%s)"), |
4c068a98 | 444 | sha1_to_hex(entry.sha1)); |
1376e507 NTND |
445 | |
446 | strbuf_addch(base, '/'); | |
6fda5e51 | 447 | init_tree_desc(&sub, data, size); |
55c61688 NTND |
448 | hit |= grep_tree(opt, pathspec, &sub, base, tn_len, |
449 | check_attr); | |
5010cb5f JH |
450 | free(data); |
451 | } | |
e5e062b6 NTND |
452 | strbuf_setlen(base, old_baselen); |
453 | ||
c8610a2e JH |
454 | if (hit && opt->status_only) |
455 | break; | |
5010cb5f JH |
456 | } |
457 | return hit; | |
458 | } | |
459 | ||
f34bbc15 | 460 | static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec, |
5010cb5f JH |
461 | struct object *obj, const char *name) |
462 | { | |
1974632c | 463 | if (obj->type == OBJ_BLOB) |
55c61688 | 464 | return grep_sha1(opt, obj->sha1, name, 0, NULL); |
1974632c | 465 | if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) { |
5010cb5f JH |
466 | struct tree_desc tree; |
467 | void *data; | |
6fda5e51 | 468 | unsigned long size; |
e5e062b6 NTND |
469 | struct strbuf base; |
470 | int hit, len; | |
471 | ||
b3aeb285 | 472 | grep_read_lock(); |
5010cb5f | 473 | data = read_object_with_reference(obj->sha1, tree_type, |
6fda5e51 | 474 | &size, NULL); |
b3aeb285 | 475 | grep_read_unlock(); |
8cb5775b | 476 | |
5010cb5f | 477 | if (!data) |
2fc5f9f1 | 478 | die(_("unable to read tree (%s)"), sha1_to_hex(obj->sha1)); |
e5e062b6 NTND |
479 | |
480 | len = name ? strlen(name) : 0; | |
481 | strbuf_init(&base, PATH_MAX + len + 1); | |
482 | if (len) { | |
483 | strbuf_add(&base, name, len); | |
484 | strbuf_addch(&base, ':'); | |
485 | } | |
6fda5e51 | 486 | init_tree_desc(&tree, data, size); |
55c61688 NTND |
487 | hit = grep_tree(opt, pathspec, &tree, &base, base.len, |
488 | obj->type == OBJ_COMMIT); | |
e5e062b6 | 489 | strbuf_release(&base); |
5010cb5f JH |
490 | free(data); |
491 | return hit; | |
492 | } | |
2fc5f9f1 | 493 | die(_("unable to grep from object of type %s"), typename(obj->type)); |
5010cb5f JH |
494 | } |
495 | ||
f34bbc15 | 496 | static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec, |
30d00c39 JN |
497 | const struct object_array *list) |
498 | { | |
499 | unsigned int i; | |
500 | int hit = 0; | |
501 | const unsigned int nr = list->nr; | |
502 | ||
503 | for (i = 0; i < nr; i++) { | |
504 | struct object *real_obj; | |
505 | real_obj = deref_tag(list->objects[i].item, NULL, 0); | |
f34bbc15 | 506 | if (grep_object(opt, pathspec, real_obj, list->objects[i].name)) { |
30d00c39 JN |
507 | hit = 1; |
508 | if (opt->status_only) | |
509 | break; | |
510 | } | |
511 | } | |
512 | return hit; | |
513 | } | |
514 | ||
dbfae86a JH |
515 | static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec, |
516 | int exc_std) | |
59332d13 JH |
517 | { |
518 | struct dir_struct dir; | |
519 | int i, hit = 0; | |
520 | ||
521 | memset(&dir, 0, sizeof(dir)); | |
0a93fb8a JH |
522 | if (exc_std) |
523 | setup_standard_excludes(&dir); | |
59332d13 | 524 | |
f34bbc15 | 525 | fill_directory(&dir, pathspec->raw); |
59332d13 | 526 | for (i = 0; i < dir.nr; i++) { |
9d8b831b JH |
527 | const char *name = dir.entries[i]->name; |
528 | int namelen = strlen(name); | |
529 | if (!match_pathspec_depth(pathspec, name, namelen, 0, NULL)) | |
530 | continue; | |
59332d13 JH |
531 | hit |= grep_file(opt, dir.entries[i]->name); |
532 | if (hit && opt->status_only) | |
533 | break; | |
534 | } | |
59332d13 JH |
535 | return hit; |
536 | } | |
537 | ||
ff3c7f9a RS |
538 | static int context_callback(const struct option *opt, const char *arg, |
539 | int unset) | |
3e230fa1 RS |
540 | { |
541 | struct grep_opt *grep_opt = opt->value; | |
542 | int value; | |
543 | const char *endp; | |
544 | ||
545 | if (unset) { | |
546 | grep_opt->pre_context = grep_opt->post_context = 0; | |
547 | return 0; | |
548 | } | |
549 | value = strtol(arg, (char **)&endp, 10); | |
550 | if (*endp) { | |
2fc5f9f1 | 551 | return error(_("switch `%c' expects a numerical value"), |
3e230fa1 RS |
552 | opt->short_name); |
553 | } | |
554 | grep_opt->pre_context = grep_opt->post_context = value; | |
555 | return 0; | |
556 | } | |
557 | ||
ff3c7f9a | 558 | static int file_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
559 | { |
560 | struct grep_opt *grep_opt = opt->value; | |
c41dd2fd | 561 | int from_stdin = !strcmp(arg, "-"); |
3e230fa1 RS |
562 | FILE *patterns; |
563 | int lno = 0; | |
cfe370c6 | 564 | struct strbuf sb = STRBUF_INIT; |
3e230fa1 | 565 | |
c41dd2fd | 566 | patterns = from_stdin ? stdin : fopen(arg, "r"); |
3e230fa1 | 567 | if (!patterns) |
2fc5f9f1 | 568 | die_errno(_("cannot open '%s'"), arg); |
3e230fa1 RS |
569 | while (strbuf_getline(&sb, patterns, '\n') == 0) { |
570 | /* ignore empty line like grep does */ | |
571 | if (sb.len == 0) | |
572 | continue; | |
ed40a095 | 573 | |
ec830611 RS |
574 | append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno, |
575 | GREP_PATTERN); | |
3e230fa1 | 576 | } |
c41dd2fd RS |
577 | if (!from_stdin) |
578 | fclose(patterns); | |
3e230fa1 RS |
579 | strbuf_release(&sb); |
580 | return 0; | |
581 | } | |
582 | ||
ff3c7f9a | 583 | static int not_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
584 | { |
585 | struct grep_opt *grep_opt = opt->value; | |
586 | append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT); | |
587 | return 0; | |
588 | } | |
589 | ||
ff3c7f9a | 590 | static int and_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
591 | { |
592 | struct grep_opt *grep_opt = opt->value; | |
593 | append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND); | |
594 | return 0; | |
595 | } | |
596 | ||
ff3c7f9a | 597 | static int open_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
598 | { |
599 | struct grep_opt *grep_opt = opt->value; | |
600 | append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN); | |
601 | return 0; | |
602 | } | |
603 | ||
ff3c7f9a | 604 | static int close_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
605 | { |
606 | struct grep_opt *grep_opt = opt->value; | |
607 | append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN); | |
608 | return 0; | |
609 | } | |
610 | ||
ff3c7f9a RS |
611 | static int pattern_callback(const struct option *opt, const char *arg, |
612 | int unset) | |
3e230fa1 RS |
613 | { |
614 | struct grep_opt *grep_opt = opt->value; | |
615 | append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN); | |
616 | return 0; | |
617 | } | |
5010cb5f | 618 | |
ff3c7f9a | 619 | static int help_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
620 | { |
621 | return -1; | |
622 | } | |
088b084b | 623 | |
a633fca0 | 624 | int cmd_grep(int argc, const char **argv, const char *prefix) |
5010cb5f | 625 | { |
5010cb5f | 626 | int hit = 0; |
0a93fb8a | 627 | int cached = 0, untracked = 0, opt_exclude = -1; |
5acd64ed | 628 | int seen_dashdash = 0; |
bbc09c22 | 629 | int external_grep_allowed__ignored; |
0af88c15 | 630 | const char *show_in_pager = NULL, *default_pager = "dummy"; |
5010cb5f | 631 | struct grep_opt opt; |
3cd47459 | 632 | struct object_array list = OBJECT_ARRAY_INIT; |
1362671f | 633 | const char **paths = NULL; |
f34bbc15 | 634 | struct pathspec pathspec; |
183113a5 | 635 | struct string_list path_list = STRING_LIST_INIT_NODUP; |
5acd64ed | 636 | int i; |
3e230fa1 | 637 | int dummy; |
ff38d1a9 | 638 | int use_index = 1; |
84befcd0 | 639 | int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED; |
cca2c172 | 640 | |
3e230fa1 RS |
641 | struct option options[] = { |
642 | OPT_BOOLEAN(0, "cached", &cached, | |
4b407bc5 | 643 | N_("search in index instead of in the work tree")), |
cbb08c2e | 644 | OPT_NEGBIT(0, "no-index", &use_index, |
f63cf8c9 | 645 | N_("find in contents not managed by git"), 1), |
0a93fb8a | 646 | OPT_BOOLEAN(0, "untracked", &untracked, |
4b407bc5 | 647 | N_("search in both tracked and untracked files")), |
0a93fb8a | 648 | OPT_SET_INT(0, "exclude-standard", &opt_exclude, |
4b407bc5 | 649 | N_("search also in ignored files"), 1), |
3e230fa1 RS |
650 | OPT_GROUP(""), |
651 | OPT_BOOLEAN('v', "invert-match", &opt.invert, | |
4b407bc5 | 652 | N_("show non-matching lines")), |
5183bf67 | 653 | OPT_BOOLEAN('i', "ignore-case", &opt.ignore_case, |
4b407bc5 | 654 | N_("case insensitive matching")), |
3e230fa1 | 655 | OPT_BOOLEAN('w', "word-regexp", &opt.word_regexp, |
4b407bc5 | 656 | N_("match patterns only at word boundaries")), |
3e230fa1 | 657 | OPT_SET_INT('a', "text", &opt.binary, |
4b407bc5 | 658 | N_("process binary files as text"), GREP_BINARY_TEXT), |
3e230fa1 | 659 | OPT_SET_INT('I', NULL, &opt.binary, |
4b407bc5 | 660 | N_("don't match patterns in binary files"), |
3e230fa1 | 661 | GREP_BINARY_NOMATCH), |
4b407bc5 NTND |
662 | { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"), |
663 | N_("descend at most <depth> levels"), PARSE_OPT_NONEG, | |
a91f453f | 664 | NULL, 1 }, |
3e230fa1 | 665 | OPT_GROUP(""), |
84befcd0 | 666 | OPT_SET_INT('E', "extended-regexp", &pattern_type_arg, |
4b407bc5 | 667 | N_("use extended POSIX regular expressions"), |
84befcd0 S |
668 | GREP_PATTERN_TYPE_ERE), |
669 | OPT_SET_INT('G', "basic-regexp", &pattern_type_arg, | |
4b407bc5 | 670 | N_("use basic POSIX regular expressions (default)"), |
84befcd0 S |
671 | GREP_PATTERN_TYPE_BRE), |
672 | OPT_SET_INT('F', "fixed-strings", &pattern_type_arg, | |
4b407bc5 | 673 | N_("interpret patterns as fixed strings"), |
84befcd0 S |
674 | GREP_PATTERN_TYPE_FIXED), |
675 | OPT_SET_INT('P', "perl-regexp", &pattern_type_arg, | |
4b407bc5 | 676 | N_("use Perl-compatible regular expressions"), |
84befcd0 | 677 | GREP_PATTERN_TYPE_PCRE), |
3e230fa1 | 678 | OPT_GROUP(""), |
4b407bc5 NTND |
679 | OPT_BOOLEAN('n', "line-number", &opt.linenum, N_("show line numbers")), |
680 | OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1), | |
681 | OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1), | |
3e230fa1 | 682 | OPT_NEGBIT(0, "full-name", &opt.relative, |
4b407bc5 | 683 | N_("show filenames relative to top directory"), 1), |
3e230fa1 | 684 | OPT_BOOLEAN('l', "files-with-matches", &opt.name_only, |
4b407bc5 | 685 | N_("show only filenames instead of matching lines")), |
3e230fa1 | 686 | OPT_BOOLEAN(0, "name-only", &opt.name_only, |
4b407bc5 | 687 | N_("synonym for --files-with-matches")), |
3e230fa1 RS |
688 | OPT_BOOLEAN('L', "files-without-match", |
689 | &opt.unmatch_name_only, | |
4b407bc5 | 690 | N_("show only the names of files without match")), |
3e230fa1 | 691 | OPT_BOOLEAN('z', "null", &opt.null_following_name, |
4b407bc5 | 692 | N_("print NUL after filenames")), |
3e230fa1 | 693 | OPT_BOOLEAN('c', "count", &opt.count, |
4b407bc5 NTND |
694 | N_("show the number of matches instead of matching lines")), |
695 | OPT__COLOR(&opt.color, N_("highlight matches")), | |
a8f0e764 | 696 | OPT_BOOLEAN(0, "break", &opt.file_break, |
4b407bc5 | 697 | N_("print empty line between matches from different files")), |
1d84f72e | 698 | OPT_BOOLEAN(0, "heading", &opt.heading, |
4b407bc5 | 699 | N_("show filename only once above matches from same file")), |
3e230fa1 | 700 | OPT_GROUP(""), |
4b407bc5 NTND |
701 | OPT_CALLBACK('C', "context", &opt, N_("n"), |
702 | N_("show <n> context lines before and after matches"), | |
3e230fa1 | 703 | context_callback), |
317f63c2 | 704 | OPT_INTEGER('B', "before-context", &opt.pre_context, |
4b407bc5 | 705 | N_("show <n> context lines before matches")), |
317f63c2 | 706 | OPT_INTEGER('A', "after-context", &opt.post_context, |
4b407bc5 NTND |
707 | N_("show <n> context lines after matches")), |
708 | OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"), | |
3e230fa1 | 709 | context_callback), |
2944e4e6 | 710 | OPT_BOOLEAN('p', "show-function", &opt.funcname, |
4b407bc5 | 711 | N_("show a line with the function name before matches")), |
317f63c2 | 712 | OPT_BOOLEAN('W', "function-context", &opt.funcbody, |
4b407bc5 | 713 | N_("show the surrounding function")), |
3e230fa1 | 714 | OPT_GROUP(""), |
4b407bc5 NTND |
715 | OPT_CALLBACK('f', NULL, &opt, N_("file"), |
716 | N_("read patterns from file"), file_callback), | |
717 | { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"), | |
718 | N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback }, | |
3e230fa1 | 719 | { OPTION_CALLBACK, 0, "and", &opt, NULL, |
4b407bc5 | 720 | N_("combine patterns specified with -e"), |
3e230fa1 RS |
721 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback }, |
722 | OPT_BOOLEAN(0, "or", &dummy, ""), | |
723 | { OPTION_CALLBACK, 0, "not", &opt, NULL, "", | |
724 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback }, | |
725 | { OPTION_CALLBACK, '(', NULL, &opt, NULL, "", | |
726 | PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH, | |
727 | open_callback }, | |
728 | { OPTION_CALLBACK, ')', NULL, &opt, NULL, "", | |
729 | PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH, | |
730 | close_callback }, | |
d52ee6e6 | 731 | OPT__QUIET(&opt.status_only, |
4b407bc5 | 732 | N_("indicate hit with exit status without output")), |
3e230fa1 | 733 | OPT_BOOLEAN(0, "all-match", &opt.all_match, |
4b407bc5 | 734 | N_("show only matches from files that match all patterns")), |
17bf35a3 | 735 | { OPTION_SET_INT, 0, "debug", &opt.debug, NULL, |
3d7535e4 | 736 | N_("show parse tree for grep expression"), |
17bf35a3 | 737 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 }, |
3e230fa1 | 738 | OPT_GROUP(""), |
0af88c15 | 739 | { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager, |
4b407bc5 | 740 | N_("pager"), N_("show matching files in the pager"), |
0af88c15 | 741 | PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager }, |
bbc09c22 | 742 | OPT_BOOLEAN(0, "ext-grep", &external_grep_allowed__ignored, |
4b407bc5 NTND |
743 | N_("allow calling of grep(1) (ignored by this build)")), |
744 | { OPTION_CALLBACK, 0, "help-all", &options, NULL, N_("show usage"), | |
3e230fa1 RS |
745 | PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback }, |
746 | OPT_END() | |
747 | }; | |
5010cb5f | 748 | |
9c855c31 JN |
749 | /* |
750 | * 'git grep -h', unlike 'git grep -h <pattern>', is a request | |
751 | * to show usage information and exit. | |
752 | */ | |
753 | if (argc == 2 && !strcmp(argv[1], "-h")) | |
754 | usage_with_options(grep_usage, options); | |
755 | ||
15fabd1b JH |
756 | init_grep_defaults(); |
757 | git_config(grep_cmd_config, NULL); | |
758 | grep_init(&opt, prefix); | |
7e8f59d5 | 759 | |
5010cb5f | 760 | /* |
5acd64ed JH |
761 | * If there is no -- then the paths must exist in the working |
762 | * tree. If there is no explicit pattern specified with -e or | |
763 | * -f, we take the first unrecognized non option to be the | |
764 | * pattern, but then what follows it must be zero or more | |
765 | * valid refs up to the -- (if exists), and then existing | |
766 | * paths. If there is an explicit pattern, then the first | |
82e5a82f | 767 | * unrecognized non option is the beginning of the refs list |
5acd64ed | 768 | * that continues up to the -- (if exists), and then paths. |
5010cb5f | 769 | */ |
37782920 | 770 | argc = parse_options(argc, argv, prefix, options, grep_usage, |
3e230fa1 RS |
771 | PARSE_OPT_KEEP_DASHDASH | |
772 | PARSE_OPT_STOP_AT_NON_OPTION | | |
773 | PARSE_OPT_NO_INTERNAL_HELP); | |
c5c31d33 | 774 | grep_commit_pattern_type(pattern_type_arg, &opt); |
3e230fa1 | 775 | |
ff38d1a9 | 776 | if (use_index && !startup_info->have_repository) |
59332d13 JH |
777 | /* die the same way as if we did it at the beginning */ |
778 | setup_git_directory(); | |
779 | ||
1123c67c JK |
780 | /* |
781 | * skip a -- separator; we know it cannot be | |
782 | * separating revisions from pathnames if | |
783 | * we haven't even had any patterns yet | |
784 | */ | |
785 | if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) { | |
786 | argv++; | |
787 | argc--; | |
788 | } | |
789 | ||
3e230fa1 RS |
790 | /* First unrecognized non-option token */ |
791 | if (argc > 0 && !opt.pattern_list) { | |
792 | append_grep_pattern(&opt, argv[0], "command line", 0, | |
793 | GREP_PATTERN); | |
794 | argv++; | |
795 | argc--; | |
5010cb5f | 796 | } |
5acd64ed | 797 | |
0af88c15 JS |
798 | if (show_in_pager == default_pager) |
799 | show_in_pager = git_pager(1); | |
678e484b | 800 | if (show_in_pager) { |
e7b082a4 | 801 | opt.color = 0; |
0af88c15 JS |
802 | opt.name_only = 1; |
803 | opt.null_following_name = 1; | |
804 | opt.output_priv = &path_list; | |
805 | opt.output = append_path; | |
0c72cead | 806 | string_list_append(&path_list, show_in_pager); |
0af88c15 | 807 | use_threads = 0; |
678e484b JS |
808 | } |
809 | ||
f9b9faf6 | 810 | if (!opt.pattern_list) |
2fc5f9f1 | 811 | die(_("no pattern given.")); |
5183bf67 BC |
812 | if (!opt.fixed && opt.ignore_case) |
813 | opt.regflags |= REG_ICASE; | |
5b594f45 | 814 | |
83b5d2f5 | 815 | compile_grep_patterns(&opt); |
5acd64ed JH |
816 | |
817 | /* Check revs and then paths */ | |
3e230fa1 | 818 | for (i = 0; i < argc; i++) { |
5acd64ed | 819 | const char *arg = argv[i]; |
1362671f | 820 | unsigned char sha1[20]; |
5acd64ed JH |
821 | /* Is it a rev? */ |
822 | if (!get_sha1(arg, sha1)) { | |
f7892d18 | 823 | struct object *object = parse_object_or_die(sha1, arg); |
0b0ecaac NTND |
824 | if (!seen_dashdash) |
825 | verify_non_filename(prefix, arg); | |
1f1e895f | 826 | add_object_array(object, arg, &list); |
5acd64ed JH |
827 | continue; |
828 | } | |
829 | if (!strcmp(arg, "--")) { | |
830 | i++; | |
831 | seen_dashdash = 1; | |
832 | } | |
833 | break; | |
1362671f | 834 | } |
5acd64ed | 835 | |
53b8d931 TR |
836 | #ifndef NO_PTHREADS |
837 | if (list.nr || cached || online_cpus() == 1) | |
838 | use_threads = 0; | |
839 | #else | |
840 | use_threads = 0; | |
841 | #endif | |
842 | ||
53b8d931 TR |
843 | #ifndef NO_PTHREADS |
844 | if (use_threads) { | |
50dd0f2f AY |
845 | if (!(opt.name_only || opt.unmatch_name_only || opt.count) |
846 | && (opt.pre_context || opt.post_context || | |
847 | opt.file_break || opt.funcbody)) | |
53b8d931 TR |
848 | skip_first_line = 1; |
849 | start_threads(&opt); | |
850 | } | |
851 | #endif | |
852 | ||
5acd64ed JH |
853 | /* The rest are paths */ |
854 | if (!seen_dashdash) { | |
855 | int j; | |
c39c4f47 | 856 | for (j = i; j < argc; j++) |
023e37c3 | 857 | verify_filename(prefix, argv[j], j == i); |
5acd64ed JH |
858 | } |
859 | ||
7c5f3cc4 | 860 | paths = get_pathspec(prefix, argv + i); |
f34bbc15 | 861 | init_pathspec(&pathspec, paths); |
1376e507 NTND |
862 | pathspec.max_depth = opt.max_depth; |
863 | pathspec.recursive = 1; | |
5010cb5f | 864 | |
678e484b | 865 | if (show_in_pager && (cached || list.nr)) |
e4fe4ba5 | 866 | die(_("--open-files-in-pager only works on the worktree")); |
678e484b JS |
867 | |
868 | if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) { | |
869 | const char *pager = path_list.items[0].string; | |
870 | int len = strlen(pager); | |
871 | ||
872 | if (len > 4 && is_dir_sep(pager[len - 5])) | |
873 | pager += len - 4; | |
874 | ||
875 | if (!strcmp("less", pager) || !strcmp("vi", pager)) { | |
876 | struct strbuf buf = STRBUF_INIT; | |
877 | strbuf_addf(&buf, "+/%s%s", | |
878 | strcmp("less", pager) ? "" : "*", | |
879 | opt.pattern_list->pattern); | |
0c72cead | 880 | string_list_append(&path_list, buf.buf); |
678e484b JS |
881 | strbuf_detach(&buf, NULL); |
882 | } | |
883 | } | |
884 | ||
885 | if (!show_in_pager) | |
886 | setup_pager(); | |
887 | ||
0a93fb8a | 888 | if (!use_index && (untracked || cached)) |
dbfae86a | 889 | die(_("--cached or --untracked cannot be used with --no-index.")); |
678e484b | 890 | |
0a93fb8a | 891 | if (!use_index || untracked) { |
0a93fb8a | 892 | int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude; |
59332d13 | 893 | if (list.nr) |
dbfae86a JH |
894 | die(_("--no-index or --untracked cannot be used with revs.")); |
895 | hit = grep_directory(&opt, &pathspec, use_exclude); | |
896 | } else if (0 <= opt_exclude) { | |
9fddaf78 | 897 | die(_("--[no-]exclude-standard cannot be used for tracked contents.")); |
685359cf | 898 | } else if (!list.nr) { |
6577f542 NTND |
899 | if (!cached) |
900 | setup_work_tree(); | |
5b594f45 | 901 | |
f34bbc15 | 902 | hit = grep_cache(&opt, &pathspec, cached); |
685359cf JS |
903 | } else { |
904 | if (cached) | |
2fc5f9f1 | 905 | die(_("both --cached and trees are given.")); |
f34bbc15 | 906 | hit = grep_objects(&opt, &pathspec, &list); |
5010cb5f | 907 | } |
5b594f45 FK |
908 | |
909 | if (use_threads) | |
910 | hit |= wait_all(); | |
678e484b JS |
911 | if (hit && show_in_pager) |
912 | run_pager(&opt, prefix); | |
b48fb5b6 | 913 | free_grep_patterns(&opt); |
5010cb5f JH |
914 | return !hit; |
915 | } |