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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" | |
11 | #include "tree-walk.h" | |
12 | #include "builtin.h" | |
13 | #include "parse-options.h" | |
14 | #include "string-list.h" | |
15 | #include "run-command.h" | |
16 | #include "userdiff.h" | |
17 | #include "grep.h" | |
18 | #include "quote.h" | |
19 | #include "dir.h" | |
20 | #include "pathspec.h" | |
21 | ||
22 | static char const * const grep_usage[] = { | |
23 | N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"), | |
24 | NULL | |
25 | }; | |
26 | ||
27 | #define GREP_NUM_THREADS_DEFAULT 8 | |
28 | static int num_threads; | |
29 | ||
30 | #ifndef NO_PTHREADS | |
31 | static pthread_t *threads; | |
32 | ||
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 | */ | |
37 | struct work_item { | |
38 | struct grep_source source; | |
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 | ||
64 | static inline void grep_lock(void) | |
65 | { | |
66 | if (num_threads) | |
67 | pthread_mutex_lock(&grep_mutex); | |
68 | } | |
69 | ||
70 | static inline void grep_unlock(void) | |
71 | { | |
72 | if (num_threads) | |
73 | pthread_mutex_unlock(&grep_mutex); | |
74 | } | |
75 | ||
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 | ||
87 | static int skip_first_line; | |
88 | ||
89 | static void add_work(struct grep_opt *opt, enum grep_source_type type, | |
90 | const char *name, const char *path, const void *id) | |
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 | ||
98 | grep_source_init(&todo[todo_end].source, type, name, path, id); | |
99 | if (opt->binary != GREP_BINARY_TEXT) | |
100 | grep_source_load_driver(&todo[todo_end].source); | |
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 | ||
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]; | |
138 | if (w->out.len) { | |
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); | |
153 | } | |
154 | grep_source_clear(&w->source); | |
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; | |
177 | hit |= grep_source(opt, &w->source); | |
178 | grep_source_clear_data(&w->source); | |
179 | work_done(w); | |
180 | } | |
181 | free_grep_patterns(arg); | |
182 | free(arg); | |
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); | |
198 | pthread_mutex_init(&grep_read_mutex, NULL); | |
199 | pthread_mutex_init(&grep_attr_mutex, NULL); | |
200 | pthread_cond_init(&cond_add, NULL); | |
201 | pthread_cond_init(&cond_write, NULL); | |
202 | pthread_cond_init(&cond_result, NULL); | |
203 | grep_use_locks = 1; | |
204 | ||
205 | for (i = 0; i < ARRAY_SIZE(todo); i++) { | |
206 | strbuf_init(&todo[i].out, 0); | |
207 | } | |
208 | ||
209 | threads = xcalloc(num_threads, sizeof(*threads)); | |
210 | for (i = 0; i < num_threads; i++) { | |
211 | int err; | |
212 | struct grep_opt *o = grep_opt_dup(opt); | |
213 | o->output = strbuf_out; | |
214 | o->debug = 0; | |
215 | compile_grep_patterns(o); | |
216 | err = pthread_create(&threads[i], NULL, run, o); | |
217 | ||
218 | if (err) | |
219 | die(_("grep: failed to create thread: %s"), | |
220 | strerror(err)); | |
221 | } | |
222 | } | |
223 | ||
224 | static int wait_all(void) | |
225 | { | |
226 | int hit = 0; | |
227 | int i; | |
228 | ||
229 | grep_lock(); | |
230 | all_work_added = 1; | |
231 | ||
232 | /* Wait until all work is done. */ | |
233 | while (todo_done != todo_end) | |
234 | pthread_cond_wait(&cond_result, &grep_mutex); | |
235 | ||
236 | /* Wake up all the consumer threads so they can see that there | |
237 | * is no more work to do. | |
238 | */ | |
239 | pthread_cond_broadcast(&cond_add); | |
240 | grep_unlock(); | |
241 | ||
242 | for (i = 0; i < num_threads; i++) { | |
243 | void *h; | |
244 | pthread_join(threads[i], &h); | |
245 | hit |= (int) (intptr_t) h; | |
246 | } | |
247 | ||
248 | free(threads); | |
249 | ||
250 | pthread_mutex_destroy(&grep_mutex); | |
251 | pthread_mutex_destroy(&grep_read_mutex); | |
252 | pthread_mutex_destroy(&grep_attr_mutex); | |
253 | pthread_cond_destroy(&cond_add); | |
254 | pthread_cond_destroy(&cond_write); | |
255 | pthread_cond_destroy(&cond_result); | |
256 | grep_use_locks = 0; | |
257 | ||
258 | return hit; | |
259 | } | |
260 | #else /* !NO_PTHREADS */ | |
261 | ||
262 | static int wait_all(void) | |
263 | { | |
264 | return 0; | |
265 | } | |
266 | #endif | |
267 | ||
268 | static int grep_cmd_config(const char *var, const char *value, void *cb) | |
269 | { | |
270 | int st = grep_config(var, value, cb); | |
271 | if (git_color_default_config(var, value, cb) < 0) | |
272 | st = -1; | |
273 | ||
274 | if (!strcmp(var, "grep.threads")) { | |
275 | num_threads = git_config_int(var, value); | |
276 | if (num_threads < 0) | |
277 | die(_("invalid number of threads specified (%d) for %s"), | |
278 | num_threads, var); | |
279 | } | |
280 | ||
281 | return st; | |
282 | } | |
283 | ||
284 | static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) | |
285 | { | |
286 | void *data; | |
287 | ||
288 | grep_read_lock(); | |
289 | data = read_sha1_file(sha1, type, size); | |
290 | grep_read_unlock(); | |
291 | return data; | |
292 | } | |
293 | ||
294 | static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, | |
295 | const char *filename, int tree_name_len, | |
296 | const char *path) | |
297 | { | |
298 | struct strbuf pathbuf = STRBUF_INIT; | |
299 | ||
300 | if (opt->relative && opt->prefix_length) { | |
301 | quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf); | |
302 | strbuf_insert(&pathbuf, 0, filename, tree_name_len); | |
303 | } else { | |
304 | strbuf_addstr(&pathbuf, filename); | |
305 | } | |
306 | ||
307 | #ifndef NO_PTHREADS | |
308 | if (num_threads) { | |
309 | add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1); | |
310 | strbuf_release(&pathbuf); | |
311 | return 0; | |
312 | } else | |
313 | #endif | |
314 | { | |
315 | struct grep_source gs; | |
316 | int hit; | |
317 | ||
318 | grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1); | |
319 | strbuf_release(&pathbuf); | |
320 | hit = grep_source(opt, &gs); | |
321 | ||
322 | grep_source_clear(&gs); | |
323 | return hit; | |
324 | } | |
325 | } | |
326 | ||
327 | static int grep_file(struct grep_opt *opt, const char *filename) | |
328 | { | |
329 | struct strbuf buf = STRBUF_INIT; | |
330 | ||
331 | if (opt->relative && opt->prefix_length) | |
332 | quote_path_relative(filename, opt->prefix, &buf); | |
333 | else | |
334 | strbuf_addstr(&buf, filename); | |
335 | ||
336 | #ifndef NO_PTHREADS | |
337 | if (num_threads) { | |
338 | add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename); | |
339 | strbuf_release(&buf); | |
340 | return 0; | |
341 | } else | |
342 | #endif | |
343 | { | |
344 | struct grep_source gs; | |
345 | int hit; | |
346 | ||
347 | grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename); | |
348 | strbuf_release(&buf); | |
349 | hit = grep_source(opt, &gs); | |
350 | ||
351 | grep_source_clear(&gs); | |
352 | return hit; | |
353 | } | |
354 | } | |
355 | ||
356 | static void append_path(struct grep_opt *opt, const void *data, size_t len) | |
357 | { | |
358 | struct string_list *path_list = opt->output_priv; | |
359 | ||
360 | if (len == 1 && *(const char *)data == '\0') | |
361 | return; | |
362 | string_list_append(path_list, xstrndup(data, len)); | |
363 | } | |
364 | ||
365 | static void run_pager(struct grep_opt *opt, const char *prefix) | |
366 | { | |
367 | struct string_list *path_list = opt->output_priv; | |
368 | struct child_process child = CHILD_PROCESS_INIT; | |
369 | int i, status; | |
370 | ||
371 | for (i = 0; i < path_list->nr; i++) | |
372 | argv_array_push(&child.args, path_list->items[i].string); | |
373 | child.dir = prefix; | |
374 | child.use_shell = 1; | |
375 | ||
376 | status = run_command(&child); | |
377 | if (status) | |
378 | exit(status); | |
379 | } | |
380 | ||
381 | static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int cached) | |
382 | { | |
383 | int hit = 0; | |
384 | int nr; | |
385 | read_cache(); | |
386 | ||
387 | for (nr = 0; nr < active_nr; nr++) { | |
388 | const struct cache_entry *ce = active_cache[nr]; | |
389 | if (!S_ISREG(ce->ce_mode) || ce_intent_to_add(ce)) | |
390 | continue; | |
391 | if (!ce_path_match(ce, pathspec, NULL)) | |
392 | continue; | |
393 | /* | |
394 | * If CE_VALID is on, we assume worktree file and its cache entry | |
395 | * are identical, even if worktree file has been modified, so use | |
396 | * cache version instead | |
397 | */ | |
398 | if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) { | |
399 | if (ce_stage(ce)) | |
400 | continue; | |
401 | hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name); | |
402 | } | |
403 | else | |
404 | hit |= grep_file(opt, ce->name); | |
405 | if (ce_stage(ce)) { | |
406 | do { | |
407 | nr++; | |
408 | } while (nr < active_nr && | |
409 | !strcmp(ce->name, active_cache[nr]->name)); | |
410 | nr--; /* compensate for loop control */ | |
411 | } | |
412 | if (hit && opt->status_only) | |
413 | break; | |
414 | } | |
415 | return hit; | |
416 | } | |
417 | ||
418 | static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec, | |
419 | struct tree_desc *tree, struct strbuf *base, int tn_len, | |
420 | int check_attr) | |
421 | { | |
422 | int hit = 0; | |
423 | enum interesting match = entry_not_interesting; | |
424 | struct name_entry entry; | |
425 | int old_baselen = base->len; | |
426 | ||
427 | while (tree_entry(tree, &entry)) { | |
428 | int te_len = tree_entry_len(&entry); | |
429 | ||
430 | if (match != all_entries_interesting) { | |
431 | match = tree_entry_interesting(&entry, base, tn_len, pathspec); | |
432 | if (match == all_entries_not_interesting) | |
433 | break; | |
434 | if (match == entry_not_interesting) | |
435 | continue; | |
436 | } | |
437 | ||
438 | strbuf_add(base, entry.path, te_len); | |
439 | ||
440 | if (S_ISREG(entry.mode)) { | |
441 | hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len, | |
442 | check_attr ? base->buf + tn_len : NULL); | |
443 | } | |
444 | else if (S_ISDIR(entry.mode)) { | |
445 | enum object_type type; | |
446 | struct tree_desc sub; | |
447 | void *data; | |
448 | unsigned long size; | |
449 | ||
450 | data = lock_and_read_sha1_file(entry.sha1, &type, &size); | |
451 | if (!data) | |
452 | die(_("unable to read tree (%s)"), | |
453 | sha1_to_hex(entry.sha1)); | |
454 | ||
455 | strbuf_addch(base, '/'); | |
456 | init_tree_desc(&sub, data, size); | |
457 | hit |= grep_tree(opt, pathspec, &sub, base, tn_len, | |
458 | check_attr); | |
459 | free(data); | |
460 | } | |
461 | strbuf_setlen(base, old_baselen); | |
462 | ||
463 | if (hit && opt->status_only) | |
464 | break; | |
465 | } | |
466 | return hit; | |
467 | } | |
468 | ||
469 | static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec, | |
470 | struct object *obj, const char *name, const char *path) | |
471 | { | |
472 | if (obj->type == OBJ_BLOB) | |
473 | return grep_sha1(opt, obj->oid.hash, name, 0, path); | |
474 | if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) { | |
475 | struct tree_desc tree; | |
476 | void *data; | |
477 | unsigned long size; | |
478 | struct strbuf base; | |
479 | int hit, len; | |
480 | ||
481 | grep_read_lock(); | |
482 | data = read_object_with_reference(obj->oid.hash, tree_type, | |
483 | &size, NULL); | |
484 | grep_read_unlock(); | |
485 | ||
486 | if (!data) | |
487 | die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid)); | |
488 | ||
489 | len = name ? strlen(name) : 0; | |
490 | strbuf_init(&base, PATH_MAX + len + 1); | |
491 | if (len) { | |
492 | strbuf_add(&base, name, len); | |
493 | strbuf_addch(&base, ':'); | |
494 | } | |
495 | init_tree_desc(&tree, data, size); | |
496 | hit = grep_tree(opt, pathspec, &tree, &base, base.len, | |
497 | obj->type == OBJ_COMMIT); | |
498 | strbuf_release(&base); | |
499 | free(data); | |
500 | return hit; | |
501 | } | |
502 | die(_("unable to grep from object of type %s"), typename(obj->type)); | |
503 | } | |
504 | ||
505 | static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec, | |
506 | const struct object_array *list) | |
507 | { | |
508 | unsigned int i; | |
509 | int hit = 0; | |
510 | const unsigned int nr = list->nr; | |
511 | ||
512 | for (i = 0; i < nr; i++) { | |
513 | struct object *real_obj; | |
514 | real_obj = deref_tag(list->objects[i].item, NULL, 0); | |
515 | if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path)) { | |
516 | hit = 1; | |
517 | if (opt->status_only) | |
518 | break; | |
519 | } | |
520 | } | |
521 | return hit; | |
522 | } | |
523 | ||
524 | static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec, | |
525 | int exc_std) | |
526 | { | |
527 | struct dir_struct dir; | |
528 | int i, hit = 0; | |
529 | ||
530 | memset(&dir, 0, sizeof(dir)); | |
531 | if (exc_std) | |
532 | setup_standard_excludes(&dir); | |
533 | ||
534 | fill_directory(&dir, pathspec); | |
535 | for (i = 0; i < dir.nr; i++) { | |
536 | if (!dir_path_match(dir.entries[i], pathspec, 0, NULL)) | |
537 | continue; | |
538 | hit |= grep_file(opt, dir.entries[i]->name); | |
539 | if (hit && opt->status_only) | |
540 | break; | |
541 | } | |
542 | return hit; | |
543 | } | |
544 | ||
545 | static int context_callback(const struct option *opt, const char *arg, | |
546 | int unset) | |
547 | { | |
548 | struct grep_opt *grep_opt = opt->value; | |
549 | int value; | |
550 | const char *endp; | |
551 | ||
552 | if (unset) { | |
553 | grep_opt->pre_context = grep_opt->post_context = 0; | |
554 | return 0; | |
555 | } | |
556 | value = strtol(arg, (char **)&endp, 10); | |
557 | if (*endp) { | |
558 | return error(_("switch `%c' expects a numerical value"), | |
559 | opt->short_name); | |
560 | } | |
561 | grep_opt->pre_context = grep_opt->post_context = value; | |
562 | return 0; | |
563 | } | |
564 | ||
565 | static int file_callback(const struct option *opt, const char *arg, int unset) | |
566 | { | |
567 | struct grep_opt *grep_opt = opt->value; | |
568 | int from_stdin = !strcmp(arg, "-"); | |
569 | FILE *patterns; | |
570 | int lno = 0; | |
571 | struct strbuf sb = STRBUF_INIT; | |
572 | ||
573 | patterns = from_stdin ? stdin : fopen(arg, "r"); | |
574 | if (!patterns) | |
575 | die_errno(_("cannot open '%s'"), arg); | |
576 | while (strbuf_getline(&sb, patterns) == 0) { | |
577 | /* ignore empty line like grep does */ | |
578 | if (sb.len == 0) | |
579 | continue; | |
580 | ||
581 | append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno, | |
582 | GREP_PATTERN); | |
583 | } | |
584 | if (!from_stdin) | |
585 | fclose(patterns); | |
586 | strbuf_release(&sb); | |
587 | return 0; | |
588 | } | |
589 | ||
590 | static int not_callback(const struct option *opt, const char *arg, int unset) | |
591 | { | |
592 | struct grep_opt *grep_opt = opt->value; | |
593 | append_grep_pattern(grep_opt, "--not", "command line", 0, GREP_NOT); | |
594 | return 0; | |
595 | } | |
596 | ||
597 | static int and_callback(const struct option *opt, const char *arg, int unset) | |
598 | { | |
599 | struct grep_opt *grep_opt = opt->value; | |
600 | append_grep_pattern(grep_opt, "--and", "command line", 0, GREP_AND); | |
601 | return 0; | |
602 | } | |
603 | ||
604 | static int open_callback(const struct option *opt, const char *arg, int unset) | |
605 | { | |
606 | struct grep_opt *grep_opt = opt->value; | |
607 | append_grep_pattern(grep_opt, "(", "command line", 0, GREP_OPEN_PAREN); | |
608 | return 0; | |
609 | } | |
610 | ||
611 | static int close_callback(const struct option *opt, const char *arg, int unset) | |
612 | { | |
613 | struct grep_opt *grep_opt = opt->value; | |
614 | append_grep_pattern(grep_opt, ")", "command line", 0, GREP_CLOSE_PAREN); | |
615 | return 0; | |
616 | } | |
617 | ||
618 | static int pattern_callback(const struct option *opt, const char *arg, | |
619 | int unset) | |
620 | { | |
621 | struct grep_opt *grep_opt = opt->value; | |
622 | append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN); | |
623 | return 0; | |
624 | } | |
625 | ||
626 | int cmd_grep(int argc, const char **argv, const char *prefix) | |
627 | { | |
628 | int hit = 0; | |
629 | int cached = 0, untracked = 0, opt_exclude = -1; | |
630 | int seen_dashdash = 0; | |
631 | int external_grep_allowed__ignored; | |
632 | const char *show_in_pager = NULL, *default_pager = "dummy"; | |
633 | struct grep_opt opt; | |
634 | struct object_array list = OBJECT_ARRAY_INIT; | |
635 | struct pathspec pathspec; | |
636 | struct string_list path_list = STRING_LIST_INIT_NODUP; | |
637 | int i; | |
638 | int dummy; | |
639 | int use_index = 1; | |
640 | int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED; | |
641 | ||
642 | struct option options[] = { | |
643 | OPT_BOOL(0, "cached", &cached, | |
644 | N_("search in index instead of in the work tree")), | |
645 | OPT_NEGBIT(0, "no-index", &use_index, | |
646 | N_("find in contents not managed by git"), 1), | |
647 | OPT_BOOL(0, "untracked", &untracked, | |
648 | N_("search in both tracked and untracked files")), | |
649 | OPT_SET_INT(0, "exclude-standard", &opt_exclude, | |
650 | N_("ignore files specified via '.gitignore'"), 1), | |
651 | OPT_GROUP(""), | |
652 | OPT_BOOL('v', "invert-match", &opt.invert, | |
653 | N_("show non-matching lines")), | |
654 | OPT_BOOL('i', "ignore-case", &opt.ignore_case, | |
655 | N_("case insensitive matching")), | |
656 | OPT_BOOL('w', "word-regexp", &opt.word_regexp, | |
657 | N_("match patterns only at word boundaries")), | |
658 | OPT_SET_INT('a', "text", &opt.binary, | |
659 | N_("process binary files as text"), GREP_BINARY_TEXT), | |
660 | OPT_SET_INT('I', NULL, &opt.binary, | |
661 | N_("don't match patterns in binary files"), | |
662 | GREP_BINARY_NOMATCH), | |
663 | OPT_BOOL(0, "textconv", &opt.allow_textconv, | |
664 | N_("process binary files with textconv filters")), | |
665 | { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"), | |
666 | N_("descend at most <depth> levels"), PARSE_OPT_NONEG, | |
667 | NULL, 1 }, | |
668 | OPT_GROUP(""), | |
669 | OPT_SET_INT('E', "extended-regexp", &pattern_type_arg, | |
670 | N_("use extended POSIX regular expressions"), | |
671 | GREP_PATTERN_TYPE_ERE), | |
672 | OPT_SET_INT('G', "basic-regexp", &pattern_type_arg, | |
673 | N_("use basic POSIX regular expressions (default)"), | |
674 | GREP_PATTERN_TYPE_BRE), | |
675 | OPT_SET_INT('F', "fixed-strings", &pattern_type_arg, | |
676 | N_("interpret patterns as fixed strings"), | |
677 | GREP_PATTERN_TYPE_FIXED), | |
678 | OPT_SET_INT('P', "perl-regexp", &pattern_type_arg, | |
679 | N_("use Perl-compatible regular expressions"), | |
680 | GREP_PATTERN_TYPE_PCRE), | |
681 | OPT_GROUP(""), | |
682 | OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")), | |
683 | OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1), | |
684 | OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1), | |
685 | OPT_NEGBIT(0, "full-name", &opt.relative, | |
686 | N_("show filenames relative to top directory"), 1), | |
687 | OPT_BOOL('l', "files-with-matches", &opt.name_only, | |
688 | N_("show only filenames instead of matching lines")), | |
689 | OPT_BOOL(0, "name-only", &opt.name_only, | |
690 | N_("synonym for --files-with-matches")), | |
691 | OPT_BOOL('L', "files-without-match", | |
692 | &opt.unmatch_name_only, | |
693 | N_("show only the names of files without match")), | |
694 | OPT_BOOL('z', "null", &opt.null_following_name, | |
695 | N_("print NUL after filenames")), | |
696 | OPT_BOOL('c', "count", &opt.count, | |
697 | N_("show the number of matches instead of matching lines")), | |
698 | OPT__COLOR(&opt.color, N_("highlight matches")), | |
699 | OPT_BOOL(0, "break", &opt.file_break, | |
700 | N_("print empty line between matches from different files")), | |
701 | OPT_BOOL(0, "heading", &opt.heading, | |
702 | N_("show filename only once above matches from same file")), | |
703 | OPT_GROUP(""), | |
704 | OPT_CALLBACK('C', "context", &opt, N_("n"), | |
705 | N_("show <n> context lines before and after matches"), | |
706 | context_callback), | |
707 | OPT_INTEGER('B', "before-context", &opt.pre_context, | |
708 | N_("show <n> context lines before matches")), | |
709 | OPT_INTEGER('A', "after-context", &opt.post_context, | |
710 | N_("show <n> context lines after matches")), | |
711 | OPT_INTEGER(0, "threads", &num_threads, | |
712 | N_("use <n> worker threads")), | |
713 | OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"), | |
714 | context_callback), | |
715 | OPT_BOOL('p', "show-function", &opt.funcname, | |
716 | N_("show a line with the function name before matches")), | |
717 | OPT_BOOL('W', "function-context", &opt.funcbody, | |
718 | N_("show the surrounding function")), | |
719 | OPT_GROUP(""), | |
720 | OPT_CALLBACK('f', NULL, &opt, N_("file"), | |
721 | N_("read patterns from file"), file_callback), | |
722 | { OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"), | |
723 | N_("match <pattern>"), PARSE_OPT_NONEG, pattern_callback }, | |
724 | { OPTION_CALLBACK, 0, "and", &opt, NULL, | |
725 | N_("combine patterns specified with -e"), | |
726 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback }, | |
727 | OPT_BOOL(0, "or", &dummy, ""), | |
728 | { OPTION_CALLBACK, 0, "not", &opt, NULL, "", | |
729 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, not_callback }, | |
730 | { OPTION_CALLBACK, '(', NULL, &opt, NULL, "", | |
731 | PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH, | |
732 | open_callback }, | |
733 | { OPTION_CALLBACK, ')', NULL, &opt, NULL, "", | |
734 | PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH, | |
735 | close_callback }, | |
736 | OPT__QUIET(&opt.status_only, | |
737 | N_("indicate hit with exit status without output")), | |
738 | OPT_BOOL(0, "all-match", &opt.all_match, | |
739 | N_("show only matches from files that match all patterns")), | |
740 | { OPTION_SET_INT, 0, "debug", &opt.debug, NULL, | |
741 | N_("show parse tree for grep expression"), | |
742 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 }, | |
743 | OPT_GROUP(""), | |
744 | { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager, | |
745 | N_("pager"), N_("show matching files in the pager"), | |
746 | PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager }, | |
747 | OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored, | |
748 | N_("allow calling of grep(1) (ignored by this build)")), | |
749 | OPT_END() | |
750 | }; | |
751 | ||
752 | init_grep_defaults(); | |
753 | git_config(grep_cmd_config, NULL); | |
754 | grep_init(&opt, prefix); | |
755 | ||
756 | /* | |
757 | * If there is no -- then the paths must exist in the working | |
758 | * tree. If there is no explicit pattern specified with -e or | |
759 | * -f, we take the first unrecognized non option to be the | |
760 | * pattern, but then what follows it must be zero or more | |
761 | * valid refs up to the -- (if exists), and then existing | |
762 | * paths. If there is an explicit pattern, then the first | |
763 | * unrecognized non option is the beginning of the refs list | |
764 | * that continues up to the -- (if exists), and then paths. | |
765 | */ | |
766 | argc = parse_options(argc, argv, prefix, options, grep_usage, | |
767 | PARSE_OPT_KEEP_DASHDASH | | |
768 | PARSE_OPT_STOP_AT_NON_OPTION); | |
769 | grep_commit_pattern_type(pattern_type_arg, &opt); | |
770 | ||
771 | if (use_index && !startup_info->have_repository) { | |
772 | int fallback = 0; | |
773 | git_config_get_bool("grep.fallbacktonoindex", &fallback); | |
774 | if (fallback) | |
775 | use_index = 0; | |
776 | else | |
777 | /* die the same way as if we did it at the beginning */ | |
778 | setup_git_directory(); | |
779 | } | |
780 | ||
781 | /* | |
782 | * skip a -- separator; we know it cannot be | |
783 | * separating revisions from pathnames if | |
784 | * we haven't even had any patterns yet | |
785 | */ | |
786 | if (argc > 0 && !opt.pattern_list && !strcmp(argv[0], "--")) { | |
787 | argv++; | |
788 | argc--; | |
789 | } | |
790 | ||
791 | /* First unrecognized non-option token */ | |
792 | if (argc > 0 && !opt.pattern_list) { | |
793 | append_grep_pattern(&opt, argv[0], "command line", 0, | |
794 | GREP_PATTERN); | |
795 | argv++; | |
796 | argc--; | |
797 | } | |
798 | ||
799 | if (show_in_pager == default_pager) | |
800 | show_in_pager = git_pager(1); | |
801 | if (show_in_pager) { | |
802 | opt.color = 0; | |
803 | opt.name_only = 1; | |
804 | opt.null_following_name = 1; | |
805 | opt.output_priv = &path_list; | |
806 | opt.output = append_path; | |
807 | string_list_append(&path_list, show_in_pager); | |
808 | } | |
809 | ||
810 | if (!opt.pattern_list) | |
811 | die(_("no pattern given.")); | |
812 | if (!opt.fixed && opt.ignore_case) | |
813 | opt.regflags |= REG_ICASE; | |
814 | ||
815 | compile_grep_patterns(&opt); | |
816 | ||
817 | /* Check revs and then paths */ | |
818 | for (i = 0; i < argc; i++) { | |
819 | const char *arg = argv[i]; | |
820 | unsigned char sha1[20]; | |
821 | struct object_context oc; | |
822 | /* Is it a rev? */ | |
823 | if (!get_sha1_with_context(arg, 0, sha1, &oc)) { | |
824 | struct object *object = parse_object_or_die(sha1, arg); | |
825 | if (!seen_dashdash) | |
826 | verify_non_filename(prefix, arg); | |
827 | add_object_array_with_path(object, arg, &list, oc.mode, oc.path); | |
828 | continue; | |
829 | } | |
830 | if (!strcmp(arg, "--")) { | |
831 | i++; | |
832 | seen_dashdash = 1; | |
833 | } | |
834 | break; | |
835 | } | |
836 | ||
837 | #ifndef NO_PTHREADS | |
838 | if (list.nr || cached || show_in_pager) | |
839 | num_threads = 0; | |
840 | else if (num_threads == 0) | |
841 | num_threads = GREP_NUM_THREADS_DEFAULT; | |
842 | else if (num_threads < 0) | |
843 | die(_("invalid number of threads specified (%d)"), num_threads); | |
844 | #else | |
845 | num_threads = 0; | |
846 | #endif | |
847 | ||
848 | #ifndef NO_PTHREADS | |
849 | if (num_threads) { | |
850 | if (!(opt.name_only || opt.unmatch_name_only || opt.count) | |
851 | && (opt.pre_context || opt.post_context || | |
852 | opt.file_break || opt.funcbody)) | |
853 | skip_first_line = 1; | |
854 | start_threads(&opt); | |
855 | } | |
856 | #endif | |
857 | ||
858 | /* The rest are paths */ | |
859 | if (!seen_dashdash) { | |
860 | int j; | |
861 | for (j = i; j < argc; j++) | |
862 | verify_filename(prefix, argv[j], j == i); | |
863 | } | |
864 | ||
865 | parse_pathspec(&pathspec, 0, | |
866 | PATHSPEC_PREFER_CWD | | |
867 | (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0), | |
868 | prefix, argv + i); | |
869 | pathspec.max_depth = opt.max_depth; | |
870 | pathspec.recursive = 1; | |
871 | ||
872 | if (show_in_pager && (cached || list.nr)) | |
873 | die(_("--open-files-in-pager only works on the worktree")); | |
874 | ||
875 | if (show_in_pager && opt.pattern_list && !opt.pattern_list->next) { | |
876 | const char *pager = path_list.items[0].string; | |
877 | int len = strlen(pager); | |
878 | ||
879 | if (len > 4 && is_dir_sep(pager[len - 5])) | |
880 | pager += len - 4; | |
881 | ||
882 | if (opt.ignore_case && !strcmp("less", pager)) | |
883 | string_list_append(&path_list, "-I"); | |
884 | ||
885 | if (!strcmp("less", pager) || !strcmp("vi", pager)) { | |
886 | struct strbuf buf = STRBUF_INIT; | |
887 | strbuf_addf(&buf, "+/%s%s", | |
888 | strcmp("less", pager) ? "" : "*", | |
889 | opt.pattern_list->pattern); | |
890 | string_list_append(&path_list, buf.buf); | |
891 | strbuf_detach(&buf, NULL); | |
892 | } | |
893 | } | |
894 | ||
895 | if (!show_in_pager && !opt.status_only) | |
896 | setup_pager(); | |
897 | ||
898 | if (!use_index && (untracked || cached)) | |
899 | die(_("--cached or --untracked cannot be used with --no-index.")); | |
900 | ||
901 | if (!use_index || untracked) { | |
902 | int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude; | |
903 | if (list.nr) | |
904 | die(_("--no-index or --untracked cannot be used with revs.")); | |
905 | hit = grep_directory(&opt, &pathspec, use_exclude); | |
906 | } else if (0 <= opt_exclude) { | |
907 | die(_("--[no-]exclude-standard cannot be used for tracked contents.")); | |
908 | } else if (!list.nr) { | |
909 | if (!cached) | |
910 | setup_work_tree(); | |
911 | ||
912 | hit = grep_cache(&opt, &pathspec, cached); | |
913 | } else { | |
914 | if (cached) | |
915 | die(_("both --cached and trees are given.")); | |
916 | hit = grep_objects(&opt, &pathspec, &list); | |
917 | } | |
918 | ||
919 | if (num_threads) | |
920 | hit |= wait_all(); | |
921 | if (hit && show_in_pager) | |
922 | run_pager(&opt, prefix); | |
923 | free_grep_patterns(&opt); | |
924 | return !hit; | |
925 | } |