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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[] = { |
9c9b4f2f | 23 | N_("git grep [<options>] [-e] <pattern> [<rev>...] [[--] <path>...]"), |
3e230fa1 RS |
24 | NULL |
25 | }; | |
26 | ||
89f09dd3 VL |
27 | #define GREP_NUM_THREADS_DEFAULT 8 |
28 | static int num_threads; | |
5b594f45 FK |
29 | |
30 | #ifndef NO_PTHREADS | |
89f09dd3 | 31 | static pthread_t *threads; |
5b594f45 | 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 | { | |
89f09dd3 | 66 | if (num_threads) |
1487a12b JH |
67 | pthread_mutex_lock(&grep_mutex); |
68 | } | |
69 | ||
70 | static inline void grep_unlock(void) | |
71 | { | |
89f09dd3 | 72 | if (num_threads) |
1487a12b JH |
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 | ||
89f09dd3 VL |
209 | threads = xcalloc(num_threads, sizeof(*threads)); |
210 | for (i = 0; i < num_threads; i++) { | |
5b594f45 FK |
211 | int err; |
212 | struct grep_opt *o = grep_opt_dup(opt); | |
213 | o->output = strbuf_out; | |
208f5aa4 | 214 | o->debug = 0; |
5b594f45 FK |
215 | compile_grep_patterns(o); |
216 | err = pthread_create(&threads[i], NULL, run, o); | |
217 | ||
218 | if (err) | |
2fc5f9f1 | 219 | die(_("grep: failed to create thread: %s"), |
5b594f45 FK |
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 | ||
89f09dd3 | 242 | for (i = 0; i < num_threads; i++) { |
5b594f45 FK |
243 | void *h; |
244 | pthread_join(threads[i], &h); | |
245 | hit |= (int) (intptr_t) h; | |
246 | } | |
247 | ||
89f09dd3 VL |
248 | free(threads); |
249 | ||
5b594f45 | 250 | pthread_mutex_destroy(&grep_mutex); |
b3aeb285 | 251 | pthread_mutex_destroy(&grep_read_mutex); |
0579f91d | 252 | pthread_mutex_destroy(&grep_attr_mutex); |
5b594f45 FK |
253 | pthread_cond_destroy(&cond_add); |
254 | pthread_cond_destroy(&cond_write); | |
255 | pthread_cond_destroy(&cond_result); | |
78db6ea9 | 256 | grep_use_locks = 0; |
5b594f45 FK |
257 | |
258 | return hit; | |
259 | } | |
260 | #else /* !NO_PTHREADS */ | |
5b594f45 FK |
261 | |
262 | static int wait_all(void) | |
263 | { | |
264 | return 0; | |
265 | } | |
266 | #endif | |
267 | ||
15fabd1b JH |
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; | |
89f09dd3 VL |
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 | ||
15fabd1b JH |
281 | return st; |
282 | } | |
283 | ||
5f02d315 JH |
284 | static void *lock_and_read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) |
285 | { | |
286 | void *data; | |
287 | ||
b3aeb285 | 288 | grep_read_lock(); |
76416139 | 289 | data = read_sha1_file(sha1, type, size); |
b3aeb285 | 290 | grep_read_unlock(); |
5b594f45 FK |
291 | return data; |
292 | } | |
293 | ||
294 | static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, | |
55c61688 NTND |
295 | const char *filename, int tree_name_len, |
296 | const char *path) | |
5b594f45 FK |
297 | { |
298 | struct strbuf pathbuf = STRBUF_INIT; | |
5b594f45 | 299 | |
0d042fec | 300 | if (opt->relative && opt->prefix_length) { |
39598f99 | 301 | quote_path_relative(filename + tree_name_len, opt->prefix, &pathbuf); |
5b594f45 FK |
302 | strbuf_insert(&pathbuf, 0, filename, tree_name_len); |
303 | } else { | |
304 | strbuf_addstr(&pathbuf, filename); | |
305 | } | |
306 | ||
5b594f45 | 307 | #ifndef NO_PTHREADS |
89f09dd3 | 308 | if (num_threads) { |
55c61688 | 309 | add_work(opt, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1); |
8f24a632 | 310 | strbuf_release(&pathbuf); |
5b594f45 FK |
311 | return 0; |
312 | } else | |
313 | #endif | |
314 | { | |
8f24a632 | 315 | struct grep_source gs; |
5b594f45 | 316 | int hit; |
5010cb5f | 317 | |
55c61688 | 318 | grep_source_init(&gs, GREP_SOURCE_SHA1, pathbuf.buf, path, sha1); |
8f24a632 JK |
319 | strbuf_release(&pathbuf); |
320 | hit = grep_source(opt, &gs); | |
dc49cd76 | 321 | |
8f24a632 JK |
322 | grep_source_clear(&gs); |
323 | return hit; | |
5010cb5f | 324 | } |
5b594f45 FK |
325 | } |
326 | ||
327 | static int grep_file(struct grep_opt *opt, const char *filename) | |
328 | { | |
329 | struct strbuf buf = STRBUF_INIT; | |
5b594f45 | 330 | |
0d042fec | 331 | if (opt->relative && opt->prefix_length) |
39598f99 | 332 | quote_path_relative(filename, opt->prefix, &buf); |
5b594f45 FK |
333 | else |
334 | strbuf_addstr(&buf, filename); | |
5b594f45 FK |
335 | |
336 | #ifndef NO_PTHREADS | |
89f09dd3 | 337 | if (num_threads) { |
55c61688 | 338 | add_work(opt, GREP_SOURCE_FILE, buf.buf, filename, filename); |
8f24a632 | 339 | strbuf_release(&buf); |
5b594f45 FK |
340 | return 0; |
341 | } else | |
342 | #endif | |
343 | { | |
8f24a632 | 344 | struct grep_source gs; |
5b594f45 | 345 | int hit; |
5b594f45 | 346 | |
55c61688 | 347 | grep_source_init(&gs, GREP_SOURCE_FILE, buf.buf, filename, filename); |
8f24a632 JK |
348 | strbuf_release(&buf); |
349 | hit = grep_source(opt, &gs); | |
350 | ||
351 | grep_source_clear(&gs); | |
5b594f45 FK |
352 | return hit; |
353 | } | |
5010cb5f JH |
354 | } |
355 | ||
678e484b JS |
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; | |
0c72cead | 362 | string_list_append(path_list, xstrndup(data, len)); |
678e484b JS |
363 | } |
364 | ||
365 | static void run_pager(struct grep_opt *opt, const char *prefix) | |
366 | { | |
367 | struct string_list *path_list = opt->output_priv; | |
850d2fec | 368 | struct child_process child = CHILD_PROCESS_INIT; |
678e484b JS |
369 | int i, status; |
370 | ||
371 | for (i = 0; i < path_list->nr; i++) | |
850d2fec JK |
372 | argv_array_push(&child.args, path_list->items[i].string); |
373 | child.dir = prefix; | |
374 | child.use_shell = 1; | |
678e484b | 375 | |
850d2fec | 376 | status = run_command(&child); |
678e484b JS |
377 | if (status) |
378 | exit(status); | |
678e484b JS |
379 | } |
380 | ||
f34bbc15 | 381 | static int grep_cache(struct grep_opt *opt, const struct pathspec *pathspec, int cached) |
5010cb5f JH |
382 | { |
383 | int hit = 0; | |
384 | int nr; | |
385 | read_cache(); | |
386 | ||
387 | for (nr = 0; nr < active_nr; nr++) { | |
9c5e6c80 | 388 | const struct cache_entry *ce = active_cache[nr]; |
4d552005 | 389 | if (!S_ISREG(ce->ce_mode) || ce_intent_to_add(ce)) |
5010cb5f | 390 | continue; |
429bb40a | 391 | if (!ce_path_match(ce, pathspec, NULL)) |
5010cb5f | 392 | continue; |
57d43466 NTND |
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 | */ | |
b4d1690d | 398 | if (cached || (ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) { |
36f2587f JH |
399 | if (ce_stage(ce)) |
400 | continue; | |
55c61688 | 401 | hit |= grep_sha1(opt, ce->sha1, ce->name, 0, ce->name); |
36f2587f | 402 | } |
5010cb5f JH |
403 | else |
404 | hit |= grep_file(opt, ce->name); | |
36f2587f JH |
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 | } | |
c8610a2e JH |
412 | if (hit && opt->status_only) |
413 | break; | |
5010cb5f JH |
414 | } |
415 | return hit; | |
416 | } | |
417 | ||
f34bbc15 | 418 | static int grep_tree(struct grep_opt *opt, const struct pathspec *pathspec, |
55c61688 NTND |
419 | struct tree_desc *tree, struct strbuf *base, int tn_len, |
420 | int check_attr) | |
5010cb5f | 421 | { |
d688cf07 NTND |
422 | int hit = 0; |
423 | enum interesting match = entry_not_interesting; | |
4c068a98 | 424 | struct name_entry entry; |
e5e062b6 | 425 | int old_baselen = base->len; |
5010cb5f | 426 | |
4c068a98 | 427 | while (tree_entry(tree, &entry)) { |
0de16337 | 428 | int te_len = tree_entry_len(&entry); |
e5e062b6 | 429 | |
d688cf07 | 430 | if (match != all_entries_interesting) { |
97d0b74a | 431 | match = tree_entry_interesting(&entry, base, tn_len, pathspec); |
d688cf07 | 432 | if (match == all_entries_not_interesting) |
97d0b74a | 433 | break; |
d688cf07 | 434 | if (match == entry_not_interesting) |
1376e507 NTND |
435 | continue; |
436 | } | |
5010cb5f | 437 | |
1376e507 | 438 | strbuf_add(base, entry.path, te_len); |
e0eb889f | 439 | |
1376e507 | 440 | if (S_ISREG(entry.mode)) { |
55c61688 NTND |
441 | hit |= grep_sha1(opt, entry.sha1, base->buf, tn_len, |
442 | check_attr ? base->buf + tn_len : NULL); | |
e5e062b6 | 443 | } |
4c068a98 | 444 | else if (S_ISDIR(entry.mode)) { |
21666f1a | 445 | enum object_type type; |
5010cb5f JH |
446 | struct tree_desc sub; |
447 | void *data; | |
6fda5e51 LT |
448 | unsigned long size; |
449 | ||
5f02d315 | 450 | data = lock_and_read_sha1_file(entry.sha1, &type, &size); |
5010cb5f | 451 | if (!data) |
2fc5f9f1 | 452 | die(_("unable to read tree (%s)"), |
4c068a98 | 453 | sha1_to_hex(entry.sha1)); |
1376e507 NTND |
454 | |
455 | strbuf_addch(base, '/'); | |
6fda5e51 | 456 | init_tree_desc(&sub, data, size); |
55c61688 NTND |
457 | hit |= grep_tree(opt, pathspec, &sub, base, tn_len, |
458 | check_attr); | |
5010cb5f JH |
459 | free(data); |
460 | } | |
e5e062b6 NTND |
461 | strbuf_setlen(base, old_baselen); |
462 | ||
c8610a2e JH |
463 | if (hit && opt->status_only) |
464 | break; | |
5010cb5f JH |
465 | } |
466 | return hit; | |
467 | } | |
468 | ||
f34bbc15 | 469 | static int grep_object(struct grep_opt *opt, const struct pathspec *pathspec, |
9e0c3c4f | 470 | struct object *obj, const char *name, const char *path) |
5010cb5f | 471 | { |
1974632c | 472 | if (obj->type == OBJ_BLOB) |
ed1c9977 | 473 | return grep_sha1(opt, obj->oid.hash, name, 0, path); |
1974632c | 474 | if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) { |
5010cb5f JH |
475 | struct tree_desc tree; |
476 | void *data; | |
6fda5e51 | 477 | unsigned long size; |
e5e062b6 NTND |
478 | struct strbuf base; |
479 | int hit, len; | |
480 | ||
b3aeb285 | 481 | grep_read_lock(); |
f2fd0760 | 482 | data = read_object_with_reference(obj->oid.hash, tree_type, |
6fda5e51 | 483 | &size, NULL); |
b3aeb285 | 484 | grep_read_unlock(); |
8cb5775b | 485 | |
5010cb5f | 486 | if (!data) |
f2fd0760 | 487 | die(_("unable to read tree (%s)"), oid_to_hex(&obj->oid)); |
e5e062b6 NTND |
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 | } | |
6fda5e51 | 495 | init_tree_desc(&tree, data, size); |
55c61688 NTND |
496 | hit = grep_tree(opt, pathspec, &tree, &base, base.len, |
497 | obj->type == OBJ_COMMIT); | |
e5e062b6 | 498 | strbuf_release(&base); |
5010cb5f JH |
499 | free(data); |
500 | return hit; | |
501 | } | |
2fc5f9f1 | 502 | die(_("unable to grep from object of type %s"), typename(obj->type)); |
5010cb5f JH |
503 | } |
504 | ||
f34bbc15 | 505 | static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec, |
30d00c39 JN |
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); | |
9e0c3c4f | 515 | if (grep_object(opt, pathspec, real_obj, list->objects[i].name, list->objects[i].path)) { |
30d00c39 JN |
516 | hit = 1; |
517 | if (opt->status_only) | |
518 | break; | |
519 | } | |
520 | } | |
521 | return hit; | |
522 | } | |
523 | ||
dbfae86a JH |
524 | static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec, |
525 | int exc_std) | |
59332d13 JH |
526 | { |
527 | struct dir_struct dir; | |
528 | int i, hit = 0; | |
529 | ||
530 | memset(&dir, 0, sizeof(dir)); | |
0a93fb8a JH |
531 | if (exc_std) |
532 | setup_standard_excludes(&dir); | |
59332d13 | 533 | |
7327d3d1 | 534 | fill_directory(&dir, pathspec); |
59332d13 | 535 | for (i = 0; i < dir.nr; i++) { |
ebb32893 | 536 | if (!dir_path_match(dir.entries[i], pathspec, 0, NULL)) |
9d8b831b | 537 | continue; |
59332d13 JH |
538 | hit |= grep_file(opt, dir.entries[i]->name); |
539 | if (hit && opt->status_only) | |
540 | break; | |
541 | } | |
59332d13 JH |
542 | return hit; |
543 | } | |
544 | ||
ff3c7f9a RS |
545 | static int context_callback(const struct option *opt, const char *arg, |
546 | int unset) | |
3e230fa1 RS |
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) { | |
2fc5f9f1 | 558 | return error(_("switch `%c' expects a numerical value"), |
3e230fa1 RS |
559 | opt->short_name); |
560 | } | |
561 | grep_opt->pre_context = grep_opt->post_context = value; | |
562 | return 0; | |
563 | } | |
564 | ||
ff3c7f9a | 565 | static int file_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
566 | { |
567 | struct grep_opt *grep_opt = opt->value; | |
c41dd2fd | 568 | int from_stdin = !strcmp(arg, "-"); |
3e230fa1 RS |
569 | FILE *patterns; |
570 | int lno = 0; | |
cfe370c6 | 571 | struct strbuf sb = STRBUF_INIT; |
3e230fa1 | 572 | |
c41dd2fd | 573 | patterns = from_stdin ? stdin : fopen(arg, "r"); |
3e230fa1 | 574 | if (!patterns) |
2fc5f9f1 | 575 | die_errno(_("cannot open '%s'"), arg); |
a5518431 | 576 | while (strbuf_getline(&sb, patterns) == 0) { |
3e230fa1 RS |
577 | /* ignore empty line like grep does */ |
578 | if (sb.len == 0) | |
579 | continue; | |
ed40a095 | 580 | |
ec830611 RS |
581 | append_grep_pat(grep_opt, sb.buf, sb.len, arg, ++lno, |
582 | GREP_PATTERN); | |
3e230fa1 | 583 | } |
c41dd2fd RS |
584 | if (!from_stdin) |
585 | fclose(patterns); | |
3e230fa1 RS |
586 | strbuf_release(&sb); |
587 | return 0; | |
588 | } | |
589 | ||
ff3c7f9a | 590 | static int not_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, "--not", "command line", 0, GREP_NOT); | |
594 | return 0; | |
595 | } | |
596 | ||
ff3c7f9a | 597 | static int and_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, "--and", "command line", 0, GREP_AND); | |
601 | return 0; | |
602 | } | |
603 | ||
ff3c7f9a | 604 | static int open_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_OPEN_PAREN); | |
608 | return 0; | |
609 | } | |
610 | ||
ff3c7f9a | 611 | static int close_callback(const struct option *opt, const char *arg, int unset) |
3e230fa1 RS |
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 | ||
ff3c7f9a RS |
618 | static int pattern_callback(const struct option *opt, const char *arg, |
619 | int unset) | |
3e230fa1 RS |
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 | } | |
5010cb5f | 625 | |
a633fca0 | 626 | int cmd_grep(int argc, const char **argv, const char *prefix) |
5010cb5f | 627 | { |
5010cb5f | 628 | int hit = 0; |
0a93fb8a | 629 | int cached = 0, untracked = 0, opt_exclude = -1; |
5acd64ed | 630 | int seen_dashdash = 0; |
bbc09c22 | 631 | int external_grep_allowed__ignored; |
0af88c15 | 632 | const char *show_in_pager = NULL, *default_pager = "dummy"; |
5010cb5f | 633 | struct grep_opt opt; |
3cd47459 | 634 | struct object_array list = OBJECT_ARRAY_INIT; |
f34bbc15 | 635 | struct pathspec pathspec; |
183113a5 | 636 | struct string_list path_list = STRING_LIST_INIT_NODUP; |
5acd64ed | 637 | int i; |
3e230fa1 | 638 | int dummy; |
ff38d1a9 | 639 | int use_index = 1; |
84befcd0 | 640 | int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED; |
cca2c172 | 641 | |
3e230fa1 | 642 | struct option options[] = { |
d5d09d47 | 643 | OPT_BOOL(0, "cached", &cached, |
4b407bc5 | 644 | N_("search in index instead of in the work tree")), |
cbb08c2e | 645 | OPT_NEGBIT(0, "no-index", &use_index, |
f63cf8c9 | 646 | N_("find in contents not managed by git"), 1), |
d5d09d47 | 647 | OPT_BOOL(0, "untracked", &untracked, |
4b407bc5 | 648 | N_("search in both tracked and untracked files")), |
0a93fb8a | 649 | OPT_SET_INT(0, "exclude-standard", &opt_exclude, |
77fdb8a8 | 650 | N_("ignore files specified via '.gitignore'"), 1), |
3e230fa1 | 651 | OPT_GROUP(""), |
d5d09d47 | 652 | OPT_BOOL('v', "invert-match", &opt.invert, |
4b407bc5 | 653 | N_("show non-matching lines")), |
d5d09d47 | 654 | OPT_BOOL('i', "ignore-case", &opt.ignore_case, |
4b407bc5 | 655 | N_("case insensitive matching")), |
d5d09d47 | 656 | OPT_BOOL('w', "word-regexp", &opt.word_regexp, |
4b407bc5 | 657 | N_("match patterns only at word boundaries")), |
3e230fa1 | 658 | OPT_SET_INT('a', "text", &opt.binary, |
4b407bc5 | 659 | N_("process binary files as text"), GREP_BINARY_TEXT), |
3e230fa1 | 660 | OPT_SET_INT('I', NULL, &opt.binary, |
4b407bc5 | 661 | N_("don't match patterns in binary files"), |
3e230fa1 | 662 | GREP_BINARY_NOMATCH), |
335ec3bf JK |
663 | OPT_BOOL(0, "textconv", &opt.allow_textconv, |
664 | N_("process binary files with textconv filters")), | |
4b407bc5 NTND |
665 | { OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"), |
666 | N_("descend at most <depth> levels"), PARSE_OPT_NONEG, | |
a91f453f | 667 | NULL, 1 }, |
3e230fa1 | 668 | OPT_GROUP(""), |
84befcd0 | 669 | OPT_SET_INT('E', "extended-regexp", &pattern_type_arg, |
4b407bc5 | 670 | N_("use extended POSIX regular expressions"), |
84befcd0 S |
671 | GREP_PATTERN_TYPE_ERE), |
672 | OPT_SET_INT('G', "basic-regexp", &pattern_type_arg, | |
4b407bc5 | 673 | N_("use basic POSIX regular expressions (default)"), |
84befcd0 S |
674 | GREP_PATTERN_TYPE_BRE), |
675 | OPT_SET_INT('F', "fixed-strings", &pattern_type_arg, | |
4b407bc5 | 676 | N_("interpret patterns as fixed strings"), |
84befcd0 S |
677 | GREP_PATTERN_TYPE_FIXED), |
678 | OPT_SET_INT('P', "perl-regexp", &pattern_type_arg, | |
4b407bc5 | 679 | N_("use Perl-compatible regular expressions"), |
84befcd0 | 680 | GREP_PATTERN_TYPE_PCRE), |
3e230fa1 | 681 | OPT_GROUP(""), |
d5d09d47 | 682 | OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")), |
4b407bc5 NTND |
683 | OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1), |
684 | OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1), | |
3e230fa1 | 685 | OPT_NEGBIT(0, "full-name", &opt.relative, |
4b407bc5 | 686 | N_("show filenames relative to top directory"), 1), |
d5d09d47 | 687 | OPT_BOOL('l', "files-with-matches", &opt.name_only, |
4b407bc5 | 688 | N_("show only filenames instead of matching lines")), |
d5d09d47 | 689 | OPT_BOOL(0, "name-only", &opt.name_only, |
4b407bc5 | 690 | N_("synonym for --files-with-matches")), |
d5d09d47 | 691 | OPT_BOOL('L', "files-without-match", |
3e230fa1 | 692 | &opt.unmatch_name_only, |
4b407bc5 | 693 | N_("show only the names of files without match")), |
d5d09d47 | 694 | OPT_BOOL('z', "null", &opt.null_following_name, |
4b407bc5 | 695 | N_("print NUL after filenames")), |
d5d09d47 | 696 | OPT_BOOL('c', "count", &opt.count, |
4b407bc5 NTND |
697 | N_("show the number of matches instead of matching lines")), |
698 | OPT__COLOR(&opt.color, N_("highlight matches")), | |
d5d09d47 | 699 | OPT_BOOL(0, "break", &opt.file_break, |
4b407bc5 | 700 | N_("print empty line between matches from different files")), |
d5d09d47 | 701 | OPT_BOOL(0, "heading", &opt.heading, |
4b407bc5 | 702 | N_("show filename only once above matches from same file")), |
3e230fa1 | 703 | OPT_GROUP(""), |
4b407bc5 NTND |
704 | OPT_CALLBACK('C', "context", &opt, N_("n"), |
705 | N_("show <n> context lines before and after matches"), | |
3e230fa1 | 706 | context_callback), |
317f63c2 | 707 | OPT_INTEGER('B', "before-context", &opt.pre_context, |
4b407bc5 | 708 | N_("show <n> context lines before matches")), |
317f63c2 | 709 | OPT_INTEGER('A', "after-context", &opt.post_context, |
4b407bc5 | 710 | N_("show <n> context lines after matches")), |
89f09dd3 VL |
711 | OPT_INTEGER(0, "threads", &num_threads, |
712 | N_("use <n> worker threads")), | |
4b407bc5 | 713 | OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"), |
3e230fa1 | 714 | context_callback), |
d5d09d47 | 715 | OPT_BOOL('p', "show-function", &opt.funcname, |
4b407bc5 | 716 | N_("show a line with the function name before matches")), |
d5d09d47 | 717 | OPT_BOOL('W', "function-context", &opt.funcbody, |
4b407bc5 | 718 | N_("show the surrounding function")), |
3e230fa1 | 719 | OPT_GROUP(""), |
4b407bc5 NTND |
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 }, | |
3e230fa1 | 724 | { OPTION_CALLBACK, 0, "and", &opt, NULL, |
4b407bc5 | 725 | N_("combine patterns specified with -e"), |
3e230fa1 | 726 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, and_callback }, |
d5d09d47 | 727 | OPT_BOOL(0, "or", &dummy, ""), |
3e230fa1 RS |
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 }, | |
d52ee6e6 | 736 | OPT__QUIET(&opt.status_only, |
4b407bc5 | 737 | N_("indicate hit with exit status without output")), |
d5d09d47 | 738 | OPT_BOOL(0, "all-match", &opt.all_match, |
4b407bc5 | 739 | N_("show only matches from files that match all patterns")), |
17bf35a3 | 740 | { OPTION_SET_INT, 0, "debug", &opt.debug, NULL, |
3d7535e4 | 741 | N_("show parse tree for grep expression"), |
17bf35a3 | 742 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 1 }, |
3e230fa1 | 743 | OPT_GROUP(""), |
0af88c15 | 744 | { OPTION_STRING, 'O', "open-files-in-pager", &show_in_pager, |
4b407bc5 | 745 | N_("pager"), N_("show matching files in the pager"), |
0af88c15 | 746 | PARSE_OPT_OPTARG, NULL, (intptr_t)default_pager }, |
d5d09d47 SB |
747 | OPT_BOOL(0, "ext-grep", &external_grep_allowed__ignored, |
748 | N_("allow calling of grep(1) (ignored by this build)")), | |
3e230fa1 RS |
749 | OPT_END() |
750 | }; | |
5010cb5f | 751 | |
15fabd1b JH |
752 | init_grep_defaults(); |
753 | git_config(grep_cmd_config, NULL); | |
754 | grep_init(&opt, prefix); | |
7e8f59d5 | 755 | |
5010cb5f | 756 | /* |
5acd64ed JH |
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 | |
82e5a82f | 763 | * unrecognized non option is the beginning of the refs list |
5acd64ed | 764 | * that continues up to the -- (if exists), and then paths. |
5010cb5f | 765 | */ |
37782920 | 766 | argc = parse_options(argc, argv, prefix, options, grep_usage, |
3e230fa1 | 767 | PARSE_OPT_KEEP_DASHDASH | |
44415499 | 768 | PARSE_OPT_STOP_AT_NON_OPTION); |
c5c31d33 | 769 | grep_commit_pattern_type(pattern_type_arg, &opt); |
3e230fa1 | 770 | |
ecd9ba61 TG |
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 | } | |
59332d13 | 780 | |
1123c67c JK |
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 | ||
3e230fa1 RS |
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--; | |
5010cb5f | 797 | } |
5acd64ed | 798 | |
0af88c15 JS |
799 | if (show_in_pager == default_pager) |
800 | show_in_pager = git_pager(1); | |
678e484b | 801 | if (show_in_pager) { |
e7b082a4 | 802 | opt.color = 0; |
0af88c15 JS |
803 | opt.name_only = 1; |
804 | opt.null_following_name = 1; | |
805 | opt.output_priv = &path_list; | |
806 | opt.output = append_path; | |
0c72cead | 807 | string_list_append(&path_list, show_in_pager); |
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]; |
afa15f3c | 821 | struct object_context oc; |
5acd64ed | 822 | /* Is it a rev? */ |
afa15f3c | 823 | if (!get_sha1_with_context(arg, 0, sha1, &oc)) { |
f7892d18 | 824 | struct object *object = parse_object_or_die(sha1, arg); |
0b0ecaac NTND |
825 | if (!seen_dashdash) |
826 | verify_non_filename(prefix, arg); | |
9e0c3c4f | 827 | add_object_array_with_path(object, arg, &list, oc.mode, oc.path); |
5acd64ed JH |
828 | continue; |
829 | } | |
830 | if (!strcmp(arg, "--")) { | |
831 | i++; | |
832 | seen_dashdash = 1; | |
833 | } | |
834 | break; | |
1362671f | 835 | } |
5acd64ed | 836 | |
53b8d931 | 837 | #ifndef NO_PTHREADS |
044b1f3c | 838 | if (list.nr || cached || show_in_pager) |
89f09dd3 VL |
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); | |
53b8d931 | 844 | #else |
89f09dd3 | 845 | num_threads = 0; |
53b8d931 TR |
846 | #endif |
847 | ||
53b8d931 | 848 | #ifndef NO_PTHREADS |
89f09dd3 | 849 | if (num_threads) { |
50dd0f2f AY |
850 | if (!(opt.name_only || opt.unmatch_name_only || opt.count) |
851 | && (opt.pre_context || opt.post_context || | |
852 | opt.file_break || opt.funcbody)) | |
53b8d931 TR |
853 | skip_first_line = 1; |
854 | start_threads(&opt); | |
855 | } | |
856 | #endif | |
857 | ||
5acd64ed JH |
858 | /* The rest are paths */ |
859 | if (!seen_dashdash) { | |
860 | int j; | |
c39c4f47 | 861 | for (j = i; j < argc; j++) |
023e37c3 | 862 | verify_filename(prefix, argv[j], j == i); |
5acd64ed JH |
863 | } |
864 | ||
0fdc2ae5 | 865 | parse_pathspec(&pathspec, 0, |
6330a171 NTND |
866 | PATHSPEC_PREFER_CWD | |
867 | (opt.max_depth != -1 ? PATHSPEC_MAXDEPTH_VALID : 0), | |
0fdc2ae5 | 868 | prefix, argv + i); |
1376e507 NTND |
869 | pathspec.max_depth = opt.max_depth; |
870 | pathspec.recursive = 1; | |
5010cb5f | 871 | |
678e484b | 872 | if (show_in_pager && (cached || list.nr)) |
e4fe4ba5 | 873 | die(_("--open-files-in-pager only works on the worktree")); |
678e484b JS |
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 | ||
f7febbea JS |
882 | if (opt.ignore_case && !strcmp("less", pager)) |
883 | string_list_append(&path_list, "-I"); | |
884 | ||
678e484b JS |
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); | |
0c72cead | 890 | string_list_append(&path_list, buf.buf); |
678e484b JS |
891 | strbuf_detach(&buf, NULL); |
892 | } | |
893 | } | |
894 | ||
c2048f0b | 895 | if (!show_in_pager && !opt.status_only) |
678e484b JS |
896 | setup_pager(); |
897 | ||
0a93fb8a | 898 | if (!use_index && (untracked || cached)) |
dbfae86a | 899 | die(_("--cached or --untracked cannot be used with --no-index.")); |
678e484b | 900 | |
0a93fb8a | 901 | if (!use_index || untracked) { |
0a93fb8a | 902 | int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude; |
59332d13 | 903 | if (list.nr) |
dbfae86a JH |
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) { | |
9fddaf78 | 907 | die(_("--[no-]exclude-standard cannot be used for tracked contents.")); |
685359cf | 908 | } else if (!list.nr) { |
6577f542 NTND |
909 | if (!cached) |
910 | setup_work_tree(); | |
5b594f45 | 911 | |
f34bbc15 | 912 | hit = grep_cache(&opt, &pathspec, cached); |
685359cf JS |
913 | } else { |
914 | if (cached) | |
2fc5f9f1 | 915 | die(_("both --cached and trees are given.")); |
f34bbc15 | 916 | hit = grep_objects(&opt, &pathspec, &list); |
5010cb5f | 917 | } |
5b594f45 | 918 | |
89f09dd3 | 919 | if (num_threads) |
5b594f45 | 920 | hit |= wait_all(); |
678e484b JS |
921 | if (hit && show_in_pager) |
922 | run_pager(&opt, prefix); | |
b48fb5b6 | 923 | free_grep_patterns(&opt); |
5010cb5f JH |
924 | return !hit; |
925 | } |