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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" |
64acde94 | 20 | #include "pathspec.h" |
5b594f45 | 21 | |
3e230fa1 | 22 | static char const * const grep_usage[] = { |
4b407bc5 | 23 | N_("git grep [options] [-e] <pattern> [<rev>...] [[--] <path>...]"), |
3e230fa1 RS |
24 | NULL |
25 | }; | |
26 | ||
5b594f45 FK |
27 | static int use_threads = 1; |
28 | ||
29 | #ifndef NO_PTHREADS | |
30 | #define THREADS 8 | |
31 | static pthread_t threads[THREADS]; | |
32 | ||
5b594f45 FK |
33 | /* We use one producer thread and THREADS consumer |
34 | * threads. The producer adds struct work_items to 'todo' and the | |
35 | * consumers pick work items from the same array. | |
36 | */ | |
9cba13ca | 37 | struct work_item { |
8f24a632 | 38 | struct grep_source source; |
5b594f45 FK |
39 | char done; |
40 | struct strbuf out; | |
41 | }; | |
42 | ||
43 | /* In the range [todo_done, todo_start) in 'todo' we have work_items | |
44 | * that have been or are processed by a consumer thread. We haven't | |
45 | * written the result for these to stdout yet. | |
46 | * | |
47 | * The work_items in [todo_start, todo_end) are waiting to be picked | |
48 | * up by a consumer thread. | |
49 | * | |
50 | * The ranges are modulo TODO_SIZE. | |
51 | */ | |
52 | #define TODO_SIZE 128 | |
53 | static struct work_item todo[TODO_SIZE]; | |
54 | static int todo_start; | |
55 | static int todo_end; | |
56 | static int todo_done; | |
57 | ||
58 | /* Has all work items been added? */ | |
59 | static int all_work_added; | |
60 | ||
61 | /* This lock protects all the variables above. */ | |
62 | static pthread_mutex_t grep_mutex; | |
63 | ||
1487a12b JH |
64 | static inline void grep_lock(void) |
65 | { | |
66 | if (use_threads) | |
67 | pthread_mutex_lock(&grep_mutex); | |
68 | } | |
69 | ||
70 | static inline void grep_unlock(void) | |
71 | { | |
72 | if (use_threads) | |
73 | pthread_mutex_unlock(&grep_mutex); | |
74 | } | |
75 | ||
5b594f45 FK |
76 | /* Signalled when a new work_item is added to todo. */ |
77 | static pthread_cond_t cond_add; | |
78 | ||
79 | /* Signalled when the result from one work_item is written to | |
80 | * stdout. | |
81 | */ | |
82 | static pthread_cond_t cond_write; | |
83 | ||
84 | /* Signalled when we are finished with everything. */ | |
85 | static pthread_cond_t cond_result; | |
86 | ||
08303c36 | 87 | static int skip_first_line; |
431d6e7b | 88 | |
9dd5245c | 89 | static void add_work(struct grep_opt *opt, enum grep_source_type type, |
55c61688 | 90 | const char *name, const char *path, const void *id) |
5b594f45 FK |
91 | { |
92 | grep_lock(); | |
93 | ||
94 | while ((todo_end+1) % ARRAY_SIZE(todo) == todo_done) { | |
95 | pthread_cond_wait(&cond_write, &grep_mutex); | |
96 | } | |
97 | ||
55c61688 | 98 | grep_source_init(&todo[todo_end].source, type, name, path, id); |
9dd5245c JK |
99 | if (opt->binary != GREP_BINARY_TEXT) |
100 | grep_source_load_driver(&todo[todo_end].source); | |
5b594f45 FK |
101 | todo[todo_end].done = 0; |
102 | strbuf_reset(&todo[todo_end].out); | |
103 | todo_end = (todo_end + 1) % ARRAY_SIZE(todo); | |
104 | ||
105 | pthread_cond_signal(&cond_add); | |
106 | grep_unlock(); | |
107 | } | |
108 | ||
109 | static struct work_item *get_work(void) | |
110 | { | |
111 | struct work_item *ret; | |
112 | ||
113 | grep_lock(); | |
114 | while (todo_start == todo_end && !all_work_added) { | |
115 | pthread_cond_wait(&cond_add, &grep_mutex); | |
116 | } | |
117 | ||
118 | if (todo_start == todo_end && all_work_added) { | |
119 | ret = NULL; | |
120 | } else { | |
121 | ret = &todo[todo_start]; | |
122 | todo_start = (todo_start + 1) % ARRAY_SIZE(todo); | |
123 | } | |
124 | grep_unlock(); | |
125 | return ret; | |
126 | } | |
127 | ||
5b594f45 FK |
128 | static void work_done(struct work_item *w) |
129 | { | |
130 | int old_done; | |
131 | ||
132 | grep_lock(); | |
133 | w->done = 1; | |
134 | old_done = todo_done; | |
135 | for(; todo[todo_done].done && todo_done != todo_start; | |
136 | todo_done = (todo_done+1) % ARRAY_SIZE(todo)) { | |
137 | w = &todo[todo_done]; | |
431d6e7b | 138 | if (w->out.len) { |
08303c36 RS |
139 | const char *p = w->out.buf; |
140 | size_t len = w->out.len; | |
141 | ||
142 | /* Skip the leading hunk mark of the first file. */ | |
143 | if (skip_first_line) { | |
144 | while (len) { | |
145 | len--; | |
146 | if (*p++ == '\n') | |
147 | break; | |
148 | } | |
149 | skip_first_line = 0; | |
150 | } | |
151 | ||
152 | write_or_die(1, p, len); | |
431d6e7b | 153 | } |
8f24a632 | 154 | grep_source_clear(&w->source); |
5b594f45 FK |
155 | } |
156 | ||
157 | if (old_done != todo_done) | |
158 | pthread_cond_signal(&cond_write); | |
159 | ||
160 | if (all_work_added && todo_done == todo_end) | |
161 | pthread_cond_signal(&cond_result); | |
162 | ||
163 | grep_unlock(); | |
164 | } | |
165 | ||
166 | static void *run(void *arg) | |
167 | { | |
168 | int hit = 0; | |
169 | struct grep_opt *opt = arg; | |
170 | ||
171 | while (1) { | |
172 | struct work_item *w = get_work(); | |
173 | if (!w) | |
174 | break; | |
175 | ||
176 | opt->output_priv = w; | |
8f24a632 JK |
177 | hit |= grep_source(opt, &w->source); |
178 | grep_source_clear_data(&w->source); | |
5b594f45 FK |
179 | work_done(w); |
180 | } | |
bfac23d9 DM |
181 | free_grep_patterns(arg); |
182 | free(arg); | |
5b594f45 FK |
183 | |
184 | return (void*) (intptr_t) hit; | |
185 | } | |
186 | ||
187 | static void strbuf_out(struct grep_opt *opt, const void *buf, size_t size) | |
188 | { | |
189 | struct work_item *w = opt->output_priv; | |
190 | strbuf_add(&w->out, buf, size); | |
191 | } | |
192 | ||
193 | static void start_threads(struct grep_opt *opt) | |
194 | { | |
195 | int i; | |
196 | ||
197 | pthread_mutex_init(&grep_mutex, NULL); | |
b3aeb285 | 198 | pthread_mutex_init(&grep_read_mutex, NULL); |
0579f91d | 199 | pthread_mutex_init(&grep_attr_mutex, NULL); |
5b594f45 FK |
200 | pthread_cond_init(&cond_add, NULL); |
201 | pthread_cond_init(&cond_write, NULL); | |
202 | pthread_cond_init(&cond_result, NULL); | |
78db6ea9 | 203 | grep_use_locks = 1; |
5b594f45 FK |
204 | |
205 | for (i = 0; i < ARRAY_SIZE(todo); i++) { | |
206 | strbuf_init(&todo[i].out, 0); | |
207 | } | |
208 | ||
209 | for (i = 0; i < ARRAY_SIZE(threads); i++) { | |
210 | int err; | |
211 | struct grep_opt *o = grep_opt_dup(opt); | |
212 | o->output = strbuf_out; | |
208f5aa4 | 213 | o->debug = 0; |
5b594f45 FK |
214 | compile_grep_patterns(o); |
215 | err = pthread_create(&threads[i], NULL, run, o); | |
216 | ||
217 | if (err) | |
2fc5f9f1 | 218 | die(_("grep: failed to create thread: %s"), |
5b594f45 FK |
219 | strerror(err)); |
220 | } | |
221 | } | |
222 | ||
223 | static int wait_all(void) | |
224 | { | |
225 | int hit = 0; | |
226 | int i; | |
227 | ||
228 | grep_lock(); | |
229 | all_work_added = 1; | |
230 | ||
231 | /* Wait until all work is done. */ | |
232 | while (todo_done != todo_end) | |
233 | pthread_cond_wait(&cond_result, &grep_mutex); | |
234 | ||
235 | /* Wake up all the consumer threads so they can see that there | |
236 | * is no more work to do. | |
237 | */ | |
238 | pthread_cond_broadcast(&cond_add); | |
239 | grep_unlock(); | |
240 | ||
241 | for (i = 0; i < ARRAY_SIZE(threads); i++) { | |
242 | void *h; | |
243 | pthread_join(threads[i], &h); | |
244 | hit |= (int) (intptr_t) h; | |
245 | } | |
246 | ||
247 | pthread_mutex_destroy(&grep_mutex); | |
b3aeb285 | 248 | pthread_mutex_destroy(&grep_read_mutex); |
0579f91d | 249 | pthread_mutex_destroy(&grep_attr_mutex); |
5b594f45 FK |
250 | pthread_cond_destroy(&cond_add); |
251 | pthread_cond_destroy(&cond_write); | |
252 | pthread_cond_destroy(&cond_result); | |
78db6ea9 | 253 | grep_use_locks = 0; |
5b594f45 FK |
254 | |
255 | return hit; | |
256 | } | |
257 | #else /* !NO_PTHREADS */ | |
5b594f45 FK |
258 | |
259 | static int wait_all(void) | |
260 | { | |
261 | return 0; | |
262 | } | |
263 | #endif | |
264 | ||
15fabd1b JH |
265 | static int grep_cmd_config(const char *var, const char *value, void *cb) |
266 | { | |
267 | int st = grep_config(var, value, cb); | |
268 | if (git_color_default_config(var, value, cb) < 0) | |
269 | st = -1; | |
270 | return st; | |
271 | } | |
272 | ||
5f02d315 JH |
273 | static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) |
274 | { | |
275 | void *data; | |
276 | ||
b3aeb285 | 277 | grep_read_lock(); |
76416139 | 278 | data = read_sha1_file(sha1, type, size); |
b3aeb285 | 279 | grep_read_unlock(); |
5b594f45 FK |
280 | return data; |
281 | } | |
282 | ||
283 | static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, | |
55c61688 NTND |
284 | const char *filename, int tree_name_len, |
285 | const char *path) | |
5b594f45 FK |
286 | { |
287 | struct strbuf pathbuf = STRBUF_INIT; | |
5b594f45 | 288 | |
0d042fec | 289 | if (opt->relative && opt->prefix_length) { |
39598f99 | 290 | quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf); |
5b594f45 FK |
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) |
39598f99 | 321 | quote_path_relative(filename, opt->prefix, &buf); |
5b594f45 FK |
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 | ||
26ecfe3e | 364 | status = run_command_v_opt_cd_env(argv, RUN_USING_SHELL, prefix, NULL); |
678e484b JS |
365 | if (status) |
366 | exit(status); | |
367 | free(argv); | |
368 | } | |
369 | ||
f34bbc15 | 370 | static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int cached) |
5010cb5f JH |
371 | { |
372 | int hit = 0; | |
373 | int nr; | |
374 | read_cache(); | |
375 | ||
376 | for (nr = 0; nr < active_nr; nr++) { | |
9c5e6c80 | 377 | const struct cache_entry *ce = active_cache[nr]; |
7a51ed66 | 378 | if (!S_ISREG(ce->ce_mode)) |
5010cb5f | 379 | continue; |
429bb40a | 380 | if (!ce_path_match(ce, pathspec, NULL)) |
5010cb5f | 381 | continue; |
57d43466 NTND |
382 | /* |
383 | * If CE_VALID is on, we assume worktree file and its cache entry | |
384 | * are identical, even if worktree file has been modified, so use | |
385 | * cache version instead | |
386 | */ | |
b4d1690d | 387 | if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) { |
36f2587f JH |
388 | if (ce_stage(ce)) |
389 | continue; | |
55c61688 | 390 | hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name); |
36f2587f | 391 | } |
5010cb5f JH |
392 | else |
393 | hit |= grep_file(opt, ce->name); | |
36f2587f JH |
394 | if (ce_stage(ce)) { |
395 | do { | |
396 | nr++; | |
397 | } while (nr < active_nr && | |
398 | !strcmp(ce->name, active_cache[nr]->name)); | |
399 | nr--; /* compensate for loop control */ | |
400 | } | |
c8610a2e JH |
401 | if (hit && opt->status_only) |
402 | break; | |
5010cb5f JH |
403 | } |
404 | return hit; | |
405 | } | |
406 | ||
f34bbc15 | 407 | static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec, |
55c61688 NTND |
408 | struct tree_desc *tree, struct strbuf *base, int tn_len, |
409 | int check_attr) | |
5010cb5f | 410 | { |
d688cf07 NTND |
411 | int hit = 0; |
412 | enum interesting match = entry_not_interesting; | |
4c068a98 | 413 | struct name_entry entry; |
e5e062b6 | 414 | int old_baselen = base->len; |
5010cb5f | 415 | |
4c068a98 | 416 | while (tree_entry(tree, &entry)) { |
0de16337 | 417 | int te_len = tree_entry_len(&entry); |
e5e062b6 | 418 | |
d688cf07 | 419 | if (match != all_entries_interesting) { |
97d0b74a | 420 | match = tree_entry_interesting(&entry, base, tn_len, pathspec); |
d688cf07 | 421 | if (match == all_entries_not_interesting) |
97d0b74a | 422 | break; |
d688cf07 | 423 | if (match == entry_not_interesting) |
1376e507 NTND |
424 | continue; |
425 | } | |
5010cb5f | 426 | |
1376e507 | 427 | strbuf_add(base, entry.path, te_len); |
e0eb889f | 428 | |
1376e507 | 429 | if (S_ISREG(entry.mode)) { |
55c61688 NTND |
430 | hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len, |
431 | check_attr ? base->buf + tn_len : NULL); | |
e5e062b6 | 432 | } |
4c068a98 | 433 | else if (S_ISDIR(entry.mode)) { |
21666f1a | 434 | enum object_type type; |
5010cb5f JH |
435 | struct tree_desc sub; |
436 | void *data; | |
6fda5e51 LT |
437 | unsigned long size; |
438 | ||
5f02d315 | 439 | data = lock_and_read_sha1_file(entry.sha1, &type, &size); |
5010cb5f | 440 | if (!data) |
2fc5f9f1 | 441 | die(_("unable to read tree (%s)"), |
4c068a98 | 442 | sha1_to_hex(entry.sha1)); |
1376e507 NTND |
443 | |
444 | strbuf_addch(base, '/'); | |
6fda5e51 | 445 | init_tree_desc(&sub, data, size); |
55c61688 NTND |
446 | hit |= grep_tree(opt, pathspec, &sub, base, tn_len, |
447 | check_attr); | |
5010cb5f JH |
448 | free(data); |
449 | } | |
e5e062b6 NTND |
450 | strbuf_setlen(base, old_baselen); |
451 | ||
c8610a2e JH |
452 | if (hit && opt->status_only) |
453 | break; | |
5010cb5f JH |
454 | } |
455 | return hit; | |
456 | } | |
457 | ||
f34bbc15 | 458 | static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec, |
9e0c3c4f | 459 | struct object *obj, const char *name, const char *path) |
5010cb5f | 460 | { |
1974632c | 461 | if (obj->type == OBJ_BLOB) |
9e0c3c4f | 462 | return grep_sha1(opt, obj->sha1, name, 0, path); |
1974632c | 463 | if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) { |
5010cb5f JH |
464 | struct tree_desc tree; |
465 | void *data; | |
6fda5e51 | 466 | unsigned long size; |
e5e062b6 NTND |
467 | struct strbuf base; |
468 | int hit, len; | |
469 | ||
b3aeb285 | 470 | grep_read_lock(); |
5010cb5f | 471 | data = read_object_with_reference(obj->sha1, tree_type, |
6fda5e51 | 472 | &size, NULL); |
b3aeb285 | 473 | grep_read_unlock(); |
8cb5775b | 474 | |
5010cb5f | 475 | if (!data) |
2fc5f9f1 | 476 | die(_("unable to read tree (%s)"), sha1_to_hex(obj->sha1)); |
e5e062b6 NTND |
477 | |
478 | len = name ? strlen(name) : 0; | |
479 | strbuf_init(&base, PATH_MAX + len + 1); | |
480 | if (len) { | |
481 | strbuf_add(&base, name, len); | |
482 | strbuf_addch(&base, ':'); | |
483 | } | |
6fda5e51 | 484 | init_tree_desc(&tree, data, size); |
55c61688 NTND |
485 | hit = grep_tree(opt, pathspec, &tree, &base, base.len, |
486 | obj->type == OBJ_COMMIT); | |
e5e062b6 | 487 | strbuf_release(&base); |
5010cb5f JH |
488 | free(data); |
489 | return hit; | |
490 | } | |
2fc5f9f1 | 491 | die(_("unable to grep from object of type %s"), typename(obj->type)); |
5010cb5f JH |
492 | } |
493 | ||
f34bbc15 | 494 | static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec, |
30d00c39 JN |
495 | const struct object_array *list) |
496 | { | |
497 | unsigned int i; | |
498 | int hit = 0; | |
499 | const unsigned int nr = list->nr; | |
500 | ||
501 | for (i = 0; i < nr; i++) { | |
502 | struct object *real_obj; | |
503 | real_obj = deref_tag(list->objects[i].item, NULL, 0); | |
9e0c3c4f | 504 | if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path)) { |
30d00c39 JN |
505 | hit = 1; |
506 | if (opt->status_only) | |
507 | break; | |
508 | } | |
509 | } | |
510 | return hit; | |
511 | } | |
512 | ||
dbfae86a JH |
513 | static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec, |
514 | int exc_std) | |
59332d13 JH |
515 | { |
516 | struct dir_struct dir; | |
517 | int i, hit = 0; | |
518 | ||
519 | memset(&dir, 0, sizeof(dir)); | |
0a93fb8a JH |
520 | if (exc_std) |
521 | setup_standard_excludes(&dir); | |
59332d13 | 522 | |
7327d3d1 | 523 | fill_directory(&dir, pathspec); |
59332d13 | 524 | for (i = 0; i < dir.nr; i++) { |
ebb32893 | 525 | if (!dir_path_match(dir.entries[i], pathspec, 0, NULL)) |
9d8b831b | 526 | continue; |
59332d13 JH |
527 | hit |= grep_file(opt, dir.entries[i]->name); |
528 | if (hit && opt->status_only) | |
529 | break; | |
530 | } | |
59332d13 JH |
531 | return hit; |
532 | } | |
533 | ||
ff3c7f9a RS |
534 | static int context_callback(const struct option *opt, const char *arg, |
535 | int unset) | |
3e230fa1 RS |
536 | { |
537 | struct grep_opt *grep_opt = opt->value; | |
538 | int value; | |
539 | const char *endp; | |
540 | ||
541 | if (unset) { | |
542 | grep_opt->pre_context = grep_opt->post_context = 0; | |
543 | return 0; | |
544 | } | |
545 | value = strtol(arg, (char **)&endp, 10); | |
546 | if (*endp) { | |
2fc5f9f1 | 547 | return error(_("switch `%c' expects a numerical value"), |
3e230fa1 RS |
548 | opt->short_name); |
549 | } | |
550 | grep_opt->pre_context = grep_opt->post_context = value; | |
551 | return 0; | |
552 | } | |
553 | ||
ff3c7f9a | 554 | static int file_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
555 | { |
556 | struct grep_opt *grep_opt = opt->value; | |
c41dd2fd | 557 | int from_stdin = !strcmp(arg, "-"); |
3e230fa1 RS |
558 | FILE *patterns; |
559 | int lno = 0; | |
cfe370c6 | 560 | struct strbuf sb = STRBUF_INIT; |
3e230fa1 | 561 | |
c41dd2fd | 562 | patterns = from_stdin ? stdin : fopen(arg, "r"); |
3e230fa1 | 563 | if (!patterns) |
2fc5f9f1 | 564 | die_errno(_("cannot open '%s'"), arg); |
3e230fa1 RS |
565 | while (strbuf_getline(&sb, patterns, '\n') == 0) { |
566 | /* ignore empty line like grep does */ | |
567 | if (sb.len == 0) | |
568 | continue; | |
ed40a095 | 569 | |
ec830611 RS |
570 | append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno, |
571 | GREP_PATTERN); | |
3e230fa1 | 572 | } |
c41dd2fd RS |
573 | if (!from_stdin) |
574 | fclose(patterns); | |
3e230fa1 RS |
575 | strbuf_release(&sb); |
576 | return 0; | |
577 | } | |
578 | ||
ff3c7f9a | 579 | static int not_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
580 | { |
581 | struct grep_opt *grep_opt = opt->value; | |
582 | append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT); | |
583 | return 0; | |
584 | } | |
585 | ||
ff3c7f9a | 586 | static int and_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
587 | { |
588 | struct grep_opt *grep_opt = opt->value; | |
589 | append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND); | |
590 | return 0; | |
591 | } | |
592 | ||
ff3c7f9a | 593 | static int open_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
594 | { |
595 | struct grep_opt *grep_opt = opt->value; | |
596 | append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN); | |
597 | return 0; | |
598 | } | |
599 | ||
ff3c7f9a | 600 | static int close_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
601 | { |
602 | struct grep_opt *grep_opt = opt->value; | |
603 | append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN); | |
604 | return 0; | |
605 | } | |
606 | ||
ff3c7f9a RS |
607 | static int pattern_callback(const struct option *opt, const char *arg, |
608 | int unset) | |
3e230fa1 RS |
609 | { |
610 | struct grep_opt *grep_opt = opt->value; | |
611 | append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN); | |
612 | return 0; | |
613 | } | |
5010cb5f | 614 | |
ff3c7f9a | 615 | static int help_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
616 | { |
617 | return -1; | |
618 | } | |
088b084b | 619 | |
a633fca0 | 620 | int cmd_grep(int argc, const char **argv, const char *prefix) |
5010cb5f | 621 | { |
5010cb5f | 622 | int hit = 0; |
0a93fb8a | 623 | int cached = 0, untracked = 0, opt_exclude = -1; |
5acd64ed | 624 | int seen_dashdash = 0; |
bbc09c22 | 625 | int external_grep_allowed__ignored; |
0af88c15 | 626 | const char *show_in_pager = NULL, *default_pager = "dummy"; |
5010cb5f | 627 | struct grep_opt opt; |
3cd47459 | 628 | struct object_array list = OBJECT_ARRAY_INIT; |
f34bbc15 | 629 | struct pathspec pathspec; |
183113a5 | 630 | struct string_list path_list = STRING_LIST_INIT_NODUP; |
5acd64ed | 631 | int i; |
3e230fa1 | 632 | int dummy; |
ff38d1a9 | 633 | int use_index = 1; |
84befcd0 | 634 | int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED; |
cca2c172 | 635 | |
3e230fa1 | 636 | struct option options[] = { |
d5d09d47 | 637 | OPT_BOOL(0, "cached", &cached, |
4b407bc5 | 638 | N_("search in index instead of in the work tree")), |
cbb08c2e | 639 | OPT_NEGBIT(0, "no-index", &use_index, |
f63cf8c9 | 640 | N_("find in contents not managed by git"), 1), |
d5d09d47 | 641 | OPT_BOOL(0, "untracked", &untracked, |
4b407bc5 | 642 | N_("search in both tracked and untracked files")), |
0a93fb8a | 643 | OPT_SET_INT(0, "exclude-standard", &opt_exclude, |
4b407bc5 | 644 | N_("search also in ignored files"), 1), |
3e230fa1 | 645 | OPT_GROUP(""), |
d5d09d47 | 646 | OPT_BOOL('v', "invert-match", &opt.invert, |
4b407bc5 | 647 | N_("show non-matching lines")), |
d5d09d47 | 648 | OPT_BOOL('i', "ignore-case", &opt.ignore_case, |
4b407bc5 | 649 | N_("case insensitive matching")), |
d5d09d47 | 650 | OPT_BOOL('w', "word-regexp", &opt.word_regexp, |
4b407bc5 | 651 | N_("match patterns only at word boundaries")), |
3e230fa1 | 652 | OPT_SET_INT('a', "text", &opt.binary, |
4b407bc5 | 653 | N_("process binary files as text"), GREP_BINARY_TEXT), |
3e230fa1 | 654 | OPT_SET_INT('I', NULL, &opt.binary, |
4b407bc5 | 655 | N_("don't match patterns in binary files"), |
3e230fa1 | 656 | GREP_BINARY_NOMATCH), |
335ec3bf JK |
657 | OPT_BOOL(0, "textconv", &opt.allow_textconv, |
658 | N_("process binary files with textconv filters")), | |
4b407bc5 NTND |
659 | { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"), |
660 | N_("descend at most <depth> levels"), PARSE_OPT_NONEG, | |
a91f453f | 661 | NULL, 1 }, |
3e230fa1 | 662 | OPT_GROUP(""), |
84befcd0 | 663 | OPT_SET_INT('E', "extended-regexp", &pattern_type_arg, |
4b407bc5 | 664 | N_("use extended POSIX regular expressions"), |
84befcd0 S |
665 | GREP_PATTERN_TYPE_ERE), |
666 | OPT_SET_INT('G', "basic-regexp", &pattern_type_arg, | |
4b407bc5 | 667 | N_("use basic POSIX regular expressions (default)"), |
84befcd0 S |
668 | GREP_PATTERN_TYPE_BRE), |
669 | OPT_SET_INT('F', "fixed-strings", &pattern_type_arg, | |
4b407bc5 | 670 | N_("interpret patterns as fixed strings"), |
84befcd0 S |
671 | GREP_PATTERN_TYPE_FIXED), |
672 | OPT_SET_INT('P', "perl-regexp", &pattern_type_arg, | |
4b407bc5 | 673 | N_("use Perl-compatible regular expressions"), |
84befcd0 | 674 | GREP_PATTERN_TYPE_PCRE), |
3e230fa1 | 675 | OPT_GROUP(""), |
d5d09d47 | 676 | OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")), |
4b407bc5 NTND |
677 | OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1), |
678 | OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1), | |
3e230fa1 | 679 | OPT_NEGBIT(0, "full-name", &opt.relative, |
4b407bc5 | 680 | N_("show filenames relative to top directory"), 1), |
d5d09d47 | 681 | OPT_BOOL('l', "files-with-matches", &opt.name_only, |
4b407bc5 | 682 | N_("show only filenames instead of matching lines")), |
d5d09d47 | 683 | OPT_BOOL(0, "name-only", &opt.name_only, |
4b407bc5 | 684 | N_("synonym for --files-with-matches")), |
d5d09d47 | 685 | OPT_BOOL('L', "files-without-match", |
3e230fa1 | 686 | &opt.unmatch_name_only, |
4b407bc5 | 687 | N_("show only the names of files without match")), |
d5d09d47 | 688 | OPT_BOOL('z', "null", &opt.null_following_name, |
4b407bc5 | 689 | N_("print NUL after filenames")), |
d5d09d47 | 690 | OPT_BOOL('c', "count", &opt.count, |
4b407bc5 NTND |
691 | N_("show the number of matches instead of matching lines")), |
692 | OPT__COLOR(&opt.color, N_("highlight matches")), | |
d5d09d47 | 693 | OPT_BOOL(0, "break", &opt.file_break, |
4b407bc5 | 694 | N_("print empty line between matches from different files")), |
d5d09d47 | 695 | OPT_BOOL(0, "heading", &opt.heading, |
4b407bc5 | 696 | N_("show filename only once above matches from same file")), |
3e230fa1 | 697 | OPT_GROUP(""), |
4b407bc5 NTND |
698 | OPT_CALLBACK('C', "context", &opt, N_("n"), |
699 | N_("show <n> context lines before and after matches"), | |
3e230fa1 | 700 | context_callback), |
317f63c2 | 701 | OPT_INTEGER('B', "before-context", &opt.pre_context, |
4b407bc5 | 702 | N_("show <n> context lines before matches")), |
317f63c2 | 703 | OPT_INTEGER('A', "after-context", &opt.post_context, |
4b407bc5 NTND |
704 | N_("show <n> context lines after matches")), |
705 | OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"), | |
3e230fa1 | 706 | context_callback), |
d5d09d47 | 707 | OPT_BOOL('p', "show-function", &opt.funcname, |
4b407bc5 | 708 | N_("show a line with the function name before matches")), |
d5d09d47 | 709 | OPT_BOOL('W', "function-context", &opt.funcbody, |
4b407bc5 | 710 | N_("show the surrounding function")), |
3e230fa1 | 711 | OPT_GROUP(""), |
4b407bc5 NTND |
712 | OPT_CALLBACK('f', NULL, &opt, N_("file"), |
713 | N_("read patterns from file"), file_callback), | |
714 | { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"), | |
715 | N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback }, | |
3e230fa1 | 716 | { OPTION_CALLBACK, 0, "and", &opt, NULL, |
4b407bc5 | 717 | N_("combine patterns specified with -e"), |
3e230fa1 | 718 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback }, |
d5d09d47 | 719 | OPT_BOOL(0, "or", &dummy, ""), |
3e230fa1 RS |
720 | { OPTION_CALLBACK, 0, "not", &opt, NULL, "", |
721 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback }, | |
722 | { OPTION_CALLBACK, '(', NULL, &opt, NULL, "", | |
723 | PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH, | |
724 | open_callback }, | |
725 | { OPTION_CALLBACK, ')', NULL, &opt, NULL, "", | |
726 | PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH, | |
727 | close_callback }, | |
d52ee6e6 | 728 | OPT__QUIET(&opt.status_only, |
4b407bc5 | 729 | N_("indicate hit with exit status without output")), |
d5d09d47 | 730 | OPT_BOOL(0, "all-match", &opt.all_match, |
4b407bc5 | 731 | N_("show only matches from files that match all patterns")), |
17bf35a3 | 732 | { OPTION_SET_INT, 0, "debug", &opt.debug, NULL, |
3d7535e4 | 733 | N_("show parse tree for grep expression"), |
17bf35a3 | 734 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 }, |
3e230fa1 | 735 | OPT_GROUP(""), |
0af88c15 | 736 | { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager, |
4b407bc5 | 737 | N_("pager"), N_("show matching files in the pager"), |
0af88c15 | 738 | PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager }, |
d5d09d47 SB |
739 | OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored, |
740 | N_("allow calling of grep(1) (ignored by this build)")), | |
4b407bc5 | 741 | { OPTION_CALLBACK, 0, "help-all", &options, NULL, N_("show usage"), |
3e230fa1 RS |
742 | PARSE_OPT_HIDDEN | PARSE_OPT_NOARG, help_callback }, |
743 | OPT_END() | |
744 | }; | |
5010cb5f | 745 | |
9c855c31 JN |
746 | /* |
747 | * 'git grep -h', unlike 'git grep -h <pattern>', is a request | |
748 | * to show usage information and exit. | |
749 | */ | |
750 | if (argc == 2 && !strcmp(argv[1], "-h")) | |
751 | usage_with_options(grep_usage, options); | |
752 | ||
15fabd1b JH |
753 | init_grep_defaults(); |
754 | git_config(grep_cmd_config, NULL); | |
755 | grep_init(&opt, prefix); | |
7e8f59d5 | 756 | |
5010cb5f | 757 | /* |
5acd64ed JH |
758 | * If there is no -- then the paths must exist in the working |
759 | * tree. If there is no explicit pattern specified with -e or | |
760 | * -f, we take the first unrecognized non option to be the | |
761 | * pattern, but then what follows it must be zero or more | |
762 | * valid refs up to the -- (if exists), and then existing | |
763 | * paths. If there is an explicit pattern, then the first | |
82e5a82f | 764 | * unrecognized non option is the beginning of the refs list |
5acd64ed | 765 | * that continues up to the -- (if exists), and then paths. |
5010cb5f | 766 | */ |
37782920 | 767 | argc = parse_options(argc, argv, prefix, options, grep_usage, |
3e230fa1 RS |
768 | PARSE_OPT_KEEP_DASHDASH | |
769 | PARSE_OPT_STOP_AT_NON_OPTION | | |
770 | PARSE_OPT_NO_INTERNAL_HELP); | |
c5c31d33 | 771 | grep_commit_pattern_type(pattern_type_arg, &opt); |
3e230fa1 | 772 | |
ff38d1a9 | 773 | if (use_index && !startup_info->have_repository) |
59332d13 JH |
774 | /* die the same way as if we did it at the beginning */ |
775 | setup_git_directory(); | |
776 | ||
1123c67c JK |
777 | /* |
778 | * skip a -- separator; we know it cannot be | |
779 | * separating revisions from pathnames if | |
780 | * we haven't even had any patterns yet | |
781 | */ | |
782 | if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) { | |
783 | argv++; | |
784 | argc--; | |
785 | } | |
786 | ||
3e230fa1 RS |
787 | /* First unrecognized non-option token */ |
788 | if (argc > 0 && !opt.pattern_list) { | |
789 | append_grep_pattern(&opt, argv[0], "command line", 0, | |
790 | GREP_PATTERN); | |
791 | argv++; | |
792 | argc--; | |
5010cb5f | 793 | } |
5acd64ed | 794 | |
0af88c15 JS |
795 | if (show_in_pager == default_pager) |
796 | show_in_pager = git_pager(1); | |
678e484b | 797 | if (show_in_pager) { |
e7b082a4 | 798 | opt.color = 0; |
0af88c15 JS |
799 | opt.name_only = 1; |
800 | opt.null_following_name = 1; | |
801 | opt.output_priv = &path_list; | |
802 | opt.output = append_path; | |
0c72cead | 803 | string_list_append(&path_list, show_in_pager); |
0af88c15 | 804 | use_threads = 0; |
678e484b JS |
805 | } |
806 | ||
f9b9faf6 | 807 | if (!opt.pattern_list) |
2fc5f9f1 | 808 | die(_("no pattern given.")); |
5183bf67 BC |
809 | if (!opt.fixed && opt.ignore_case) |
810 | opt.regflags |= REG_ICASE; | |
5b594f45 | 811 | |
83b5d2f5 | 812 | compile_grep_patterns(&opt); |
5acd64ed JH |
813 | |
814 | /* Check revs and then paths */ | |
3e230fa1 | 815 | for (i = 0; i < argc; i++) { |
5acd64ed | 816 | const char *arg = argv[i]; |
1362671f | 817 | unsigned char sha1[20]; |
afa15f3c | 818 | struct object_context oc; |
5acd64ed | 819 | /* Is it a rev? */ |
afa15f3c | 820 | if (!get_sha1_with_context(arg, 0, sha1, &oc)) { |
f7892d18 | 821 | struct object *object = parse_object_or_die(sha1, arg); |
0b0ecaac NTND |
822 | if (!seen_dashdash) |
823 | verify_non_filename(prefix, arg); | |
9e0c3c4f | 824 | add_object_array_with_path(object, arg, &list, oc.mode, oc.path); |
5acd64ed JH |
825 | continue; |
826 | } | |
827 | if (!strcmp(arg, "--")) { | |
828 | i++; | |
829 | seen_dashdash = 1; | |
830 | } | |
831 | break; | |
1362671f | 832 | } |
5acd64ed | 833 | |
53b8d931 TR |
834 | #ifndef NO_PTHREADS |
835 | if (list.nr || cached || online_cpus() == 1) | |
836 | use_threads = 0; | |
837 | #else | |
838 | use_threads = 0; | |
839 | #endif | |
840 | ||
53b8d931 TR |
841 | #ifndef NO_PTHREADS |
842 | if (use_threads) { | |
50dd0f2f AY |
843 | if (!(opt.name_only || opt.unmatch_name_only || opt.count) |
844 | && (opt.pre_context || opt.post_context || | |
845 | opt.file_break || opt.funcbody)) | |
53b8d931 TR |
846 | skip_first_line = 1; |
847 | start_threads(&opt); | |
848 | } | |
849 | #endif | |
850 | ||
5acd64ed JH |
851 | /* The rest are paths */ |
852 | if (!seen_dashdash) { | |
853 | int j; | |
c39c4f47 | 854 | for (j = i; j < argc; j++) |
023e37c3 | 855 | verify_filename(prefix, argv[j], j == i); |
5acd64ed JH |
856 | } |
857 | ||
0fdc2ae5 | 858 | parse_pathspec(&pathspec, 0, |
6330a171 NTND |
859 | PATHSPEC_PREFER_CWD | |
860 | (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0), | |
0fdc2ae5 | 861 | prefix, argv + i); |
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 | ||
f7febbea JS |
875 | if (opt.ignore_case && !strcmp("less", pager)) |
876 | string_list_append(&path_list, "-I"); | |
877 | ||
678e484b JS |
878 | if (!strcmp("less", pager) || !strcmp("vi", pager)) { |
879 | struct strbuf buf = STRBUF_INIT; | |
880 | strbuf_addf(&buf, "+/%s%s", | |
881 | strcmp("less", pager) ? "" : "*", | |
882 | opt.pattern_list->pattern); | |
0c72cead | 883 | string_list_append(&path_list, buf.buf); |
678e484b JS |
884 | strbuf_detach(&buf, NULL); |
885 | } | |
886 | } | |
887 | ||
888 | if (!show_in_pager) | |
889 | setup_pager(); | |
890 | ||
0a93fb8a | 891 | if (!use_index && (untracked || cached)) |
dbfae86a | 892 | die(_("--cached or --untracked cannot be used with --no-index.")); |
678e484b | 893 | |
0a93fb8a | 894 | if (!use_index || untracked) { |
0a93fb8a | 895 | int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude; |
59332d13 | 896 | if (list.nr) |
dbfae86a JH |
897 | die(_("--no-index or --untracked cannot be used with revs.")); |
898 | hit = grep_directory(&opt, &pathspec, use_exclude); | |
899 | } else if (0 <= opt_exclude) { | |
9fddaf78 | 900 | die(_("--[no-]exclude-standard cannot be used for tracked contents.")); |
685359cf | 901 | } else if (!list.nr) { |
6577f542 NTND |
902 | if (!cached) |
903 | setup_work_tree(); | |
5b594f45 | 904 | |
f34bbc15 | 905 | hit = grep_cache(&opt, &pathspec, cached); |
685359cf JS |
906 | } else { |
907 | if (cached) | |
2fc5f9f1 | 908 | die(_("both --cached and trees are given.")); |
f34bbc15 | 909 | hit = grep_objects(&opt, &pathspec, &list); |
5010cb5f | 910 | } |
5b594f45 FK |
911 | |
912 | if (use_threads) | |
913 | hit |= wait_all(); | |
678e484b JS |
914 | if (hit && show_in_pager) |
915 | run_pager(&opt, prefix); | |
b48fb5b6 | 916 | free_grep_patterns(&opt); |
5010cb5f JH |
917 | return !hit; |
918 | } |