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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" |
83b5d2f5 | 13 | #include "grep.h" |
5010cb5f | 14 | |
5f7c643a JK |
15 | #ifndef NO_EXTERNAL_GREP |
16 | #ifdef __unix__ | |
17 | #define NO_EXTERNAL_GREP 0 | |
18 | #else | |
19 | #define NO_EXTERNAL_GREP 1 | |
20 | #endif | |
21 | #endif | |
22 | ||
e70b9a8b NTND |
23 | static int builtin_grep; |
24 | ||
7e8f59d5 RS |
25 | static int grep_config(const char *var, const char *value, void *cb) |
26 | { | |
27 | struct grep_opt *opt = cb; | |
28 | ||
fe3420b6 | 29 | if (!strcmp(var, "color.grep")) { |
7e8f59d5 RS |
30 | opt->color = git_config_colorbool(var, value, -1); |
31 | return 0; | |
32 | } | |
fe3420b6 | 33 | if (!strcmp(var, "color.grep.external")) |
a94982ef | 34 | return git_config_string(&(opt->color_external), var, value); |
fe3420b6 | 35 | if (!strcmp(var, "color.grep.match")) { |
7e8f59d5 RS |
36 | if (!value) |
37 | return config_error_nonbool(var); | |
38 | color_parse(value, var, opt->color_match); | |
39 | return 0; | |
40 | } | |
41 | return git_color_default_config(var, value, cb); | |
42 | } | |
43 | ||
e0eb889f JH |
44 | /* |
45 | * git grep pathspecs are somewhat different from diff-tree pathspecs; | |
46 | * pathname wildcards are allowed. | |
47 | */ | |
1362671f | 48 | static int pathspec_matches(const char **paths, const char *name) |
5010cb5f | 49 | { |
e0eb889f | 50 | int namelen, i; |
1362671f | 51 | if (!paths || !*paths) |
5010cb5f JH |
52 | return 1; |
53 | namelen = strlen(name); | |
1362671f JH |
54 | for (i = 0; paths[i]; i++) { |
55 | const char *match = paths[i]; | |
56 | int matchlen = strlen(match); | |
1e3d90e0 | 57 | const char *cp, *meta; |
e0eb889f | 58 | |
bb9e15a8 UKK |
59 | if (!matchlen || |
60 | ((matchlen <= namelen) && | |
61 | !strncmp(name, match, matchlen) && | |
62 | (match[matchlen-1] == '/' || | |
63 | name[matchlen] == '\0' || name[matchlen] == '/'))) | |
e0eb889f JH |
64 | return 1; |
65 | if (!fnmatch(match, name, 0)) | |
66 | return 1; | |
67 | if (name[namelen-1] != '/') | |
5010cb5f | 68 | continue; |
e0eb889f | 69 | |
1e3d90e0 | 70 | /* We are being asked if the directory ("name") is worth |
e0eb889f JH |
71 | * descending into. |
72 | * | |
73 | * Find the longest leading directory name that does | |
74 | * not have metacharacter in the pathspec; the name | |
75 | * we are looking at must overlap with that directory. | |
5010cb5f | 76 | */ |
1e3d90e0 | 77 | for (cp = match, meta = NULL; cp - match < matchlen; cp++) { |
e0eb889f | 78 | char ch = *cp; |
1e3d90e0 JH |
79 | if (ch == '*' || ch == '[' || ch == '?') { |
80 | meta = cp; | |
5010cb5f | 81 | break; |
1e3d90e0 | 82 | } |
e0eb889f | 83 | } |
1e3d90e0 JH |
84 | if (!meta) |
85 | meta = cp; /* fully literal */ | |
86 | ||
87 | if (namelen <= meta - match) { | |
e0eb889f JH |
88 | /* Looking at "Documentation/" and |
89 | * the pattern says "Documentation/howto/", or | |
1e3d90e0 JH |
90 | * "Documentation/diff*.txt". The name we |
91 | * have should match prefix. | |
e0eb889f JH |
92 | */ |
93 | if (!memcmp(match, name, namelen)) | |
94 | return 1; | |
1e3d90e0 | 95 | continue; |
e0eb889f | 96 | } |
1e3d90e0 JH |
97 | |
98 | if (meta - match < namelen) { | |
e0eb889f | 99 | /* Looking at "Documentation/howto/" and |
1e3d90e0 JH |
100 | * the pattern says "Documentation/h*"; |
101 | * match up to "Do.../h"; this avoids descending | |
102 | * into "Documentation/technical/". | |
e0eb889f | 103 | */ |
1e3d90e0 | 104 | if (!memcmp(match, name, meta - match)) |
e0eb889f | 105 | return 1; |
1e3d90e0 | 106 | continue; |
e0eb889f | 107 | } |
5010cb5f JH |
108 | } |
109 | return 0; | |
110 | } | |
111 | ||
0d042fec | 112 | static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name, int tree_name_len) |
5010cb5f JH |
113 | { |
114 | unsigned long size; | |
115 | char *data; | |
21666f1a | 116 | enum object_type type; |
0d042fec | 117 | char *to_free = NULL; |
5010cb5f | 118 | int hit; |
0d042fec | 119 | |
21666f1a | 120 | data = read_sha1_file(sha1, &type, &size); |
5010cb5f JH |
121 | if (!data) { |
122 | error("'%s': unable to read %s", name, sha1_to_hex(sha1)); | |
123 | return 0; | |
124 | } | |
0d042fec JH |
125 | if (opt->relative && opt->prefix_length) { |
126 | static char name_buf[PATH_MAX]; | |
127 | char *cp; | |
128 | int name_len = strlen(name) - opt->prefix_length + 1; | |
129 | ||
130 | if (!tree_name_len) | |
131 | name += opt->prefix_length; | |
132 | else { | |
133 | if (ARRAY_SIZE(name_buf) <= name_len) | |
134 | cp = to_free = xmalloc(name_len); | |
135 | else | |
136 | cp = name_buf; | |
137 | memcpy(cp, name, tree_name_len); | |
138 | strcpy(cp + tree_name_len, | |
139 | name + tree_name_len + opt->prefix_length); | |
140 | name = cp; | |
141 | } | |
142 | } | |
5010cb5f JH |
143 | hit = grep_buffer(opt, name, data, size); |
144 | free(data); | |
0d042fec | 145 | free(to_free); |
5010cb5f JH |
146 | return hit; |
147 | } | |
148 | ||
149 | static int grep_file(struct grep_opt *opt, const char *filename) | |
150 | { | |
151 | struct stat st; | |
152 | int i; | |
153 | char *data; | |
dc49cd76 SP |
154 | size_t sz; |
155 | ||
5010cb5f JH |
156 | if (lstat(filename, &st) < 0) { |
157 | err_ret: | |
158 | if (errno != ENOENT) | |
159 | error("'%s': %s", filename, strerror(errno)); | |
160 | return 0; | |
161 | } | |
162 | if (!st.st_size) | |
163 | return 0; /* empty file -- no grep hit */ | |
164 | if (!S_ISREG(st.st_mode)) | |
165 | return 0; | |
dc49cd76 | 166 | sz = xsize_t(st.st_size); |
5010cb5f JH |
167 | i = open(filename, O_RDONLY); |
168 | if (i < 0) | |
169 | goto err_ret; | |
dc49cd76 SP |
170 | data = xmalloc(sz + 1); |
171 | if (st.st_size != read_in_full(i, data, sz)) { | |
5010cb5f JH |
172 | error("'%s': short read %s", filename, strerror(errno)); |
173 | close(i); | |
174 | free(data); | |
175 | return 0; | |
176 | } | |
177 | close(i); | |
0d042fec JH |
178 | if (opt->relative && opt->prefix_length) |
179 | filename += opt->prefix_length; | |
dc49cd76 | 180 | i = grep_buffer(opt, filename, data, sz); |
5010cb5f JH |
181 | free(data); |
182 | return i; | |
183 | } | |
184 | ||
5f7c643a | 185 | #if !NO_EXTERNAL_GREP |
1e2398d7 LT |
186 | static int exec_grep(int argc, const char **argv) |
187 | { | |
188 | pid_t pid; | |
189 | int status; | |
190 | ||
191 | argv[argc] = NULL; | |
192 | pid = fork(); | |
193 | if (pid < 0) | |
194 | return pid; | |
195 | if (!pid) { | |
196 | execvp("grep", (char **) argv); | |
197 | exit(255); | |
198 | } | |
199 | while (waitpid(pid, &status, 0) < 0) { | |
200 | if (errno == EINTR) | |
201 | continue; | |
202 | return -1; | |
203 | } | |
204 | if (WIFEXITED(status)) { | |
205 | if (!WEXITSTATUS(status)) | |
206 | return 1; | |
207 | return 0; | |
208 | } | |
209 | return -1; | |
210 | } | |
211 | ||
212 | #define MAXARGS 1000 | |
ffa0a7ab JH |
213 | #define ARGBUF 4096 |
214 | #define push_arg(a) do { \ | |
215 | if (nr < MAXARGS) argv[nr++] = (a); \ | |
216 | else die("maximum number of args exceeded"); \ | |
217 | } while (0) | |
1e2398d7 | 218 | |
d99ebf08 JH |
219 | /* |
220 | * If you send a singleton filename to grep, it does not give | |
221 | * the name of the file. GNU grep has "-H" but we would want | |
222 | * that behaviour in a portable way. | |
223 | * | |
224 | * So we keep two pathnames in argv buffer unsent to grep in | |
225 | * the main loop if we need to do more than one grep. | |
226 | */ | |
227 | static int flush_grep(struct grep_opt *opt, | |
228 | int argc, int arg0, const char **argv, int *kept) | |
229 | { | |
230 | int status; | |
231 | int count = argc - arg0; | |
232 | const char *kept_0 = NULL; | |
233 | ||
234 | if (count <= 2) { | |
235 | /* | |
236 | * Because we keep at least 2 paths in the call from | |
237 | * the main loop (i.e. kept != NULL), and MAXARGS is | |
238 | * far greater than 2, this usually is a call to | |
239 | * conclude the grep. However, the user could attempt | |
240 | * to overflow the argv buffer by giving too many | |
241 | * options to leave very small number of real | |
242 | * arguments even for the call in the main loop. | |
243 | */ | |
244 | if (kept) | |
245 | die("insanely many options to grep"); | |
246 | ||
247 | /* | |
248 | * If we have two or more paths, we do not have to do | |
249 | * anything special, but we need to push /dev/null to | |
250 | * get "-H" behaviour of GNU grep portably but when we | |
251 | * are not doing "-l" nor "-L" nor "-c". | |
252 | */ | |
253 | if (count == 1 && | |
254 | !opt->name_only && | |
255 | !opt->unmatch_name_only && | |
256 | !opt->count) { | |
257 | argv[argc++] = "/dev/null"; | |
258 | argv[argc] = NULL; | |
259 | } | |
260 | } | |
261 | ||
262 | else if (kept) { | |
263 | /* | |
264 | * Called because we found many paths and haven't finished | |
265 | * iterating over the cache yet. We keep two paths | |
266 | * for the concluding call. argv[argc-2] and argv[argc-1] | |
267 | * has the last two paths, so save the first one away, | |
268 | * replace it with NULL while sending the list to grep, | |
269 | * and recover them after we are done. | |
270 | */ | |
271 | *kept = 2; | |
272 | kept_0 = argv[argc-2]; | |
273 | argv[argc-2] = NULL; | |
274 | argc -= 2; | |
275 | } | |
276 | ||
277 | status = exec_grep(argc, argv); | |
278 | ||
279 | if (kept_0) { | |
280 | /* | |
281 | * Then recover them. Now the last arg is beyond the | |
282 | * terminating NULL which is at argc, and the second | |
283 | * from the last is what we saved away in kept_0 | |
284 | */ | |
285 | argv[arg0++] = kept_0; | |
286 | argv[arg0] = argv[argc+1]; | |
287 | } | |
288 | return status; | |
289 | } | |
290 | ||
a94982ef RS |
291 | static void grep_add_color(struct strbuf *sb, const char *escape_seq) |
292 | { | |
293 | size_t orig_len = sb->len; | |
294 | ||
295 | while (*escape_seq) { | |
296 | if (*escape_seq == 'm') | |
297 | strbuf_addch(sb, ';'); | |
298 | else if (*escape_seq != '\033' && *escape_seq != '[') | |
299 | strbuf_addch(sb, *escape_seq); | |
300 | escape_seq++; | |
301 | } | |
302 | if (sb->len > orig_len && sb->buf[sb->len - 1] == ';') | |
303 | strbuf_setlen(sb, sb->len - 1); | |
304 | } | |
305 | ||
1e2398d7 LT |
306 | static int external_grep(struct grep_opt *opt, const char **paths, int cached) |
307 | { | |
fcfe34b5 | 308 | int i, nr, argc, hit, len, status; |
1e2398d7 | 309 | const char *argv[MAXARGS+1]; |
ffa0a7ab JH |
310 | char randarg[ARGBUF]; |
311 | char *argptr = randarg; | |
1e2398d7 LT |
312 | struct grep_pat *p; |
313 | ||
0d042fec | 314 | if (opt->extended || (opt->relative && opt->prefix_length)) |
79d3696c | 315 | return -1; |
ffa0a7ab JH |
316 | len = nr = 0; |
317 | push_arg("grep"); | |
ffa0a7ab | 318 | if (opt->fixed) |
f6647519 | 319 | push_arg("-F"); |
ffa0a7ab JH |
320 | if (opt->linenum) |
321 | push_arg("-n"); | |
7977f0ea LT |
322 | if (!opt->pathname) |
323 | push_arg("-h"); | |
ffa0a7ab JH |
324 | if (opt->regflags & REG_EXTENDED) |
325 | push_arg("-E"); | |
3026402c RF |
326 | if (opt->regflags & REG_ICASE) |
327 | push_arg("-i"); | |
bc395643 JH |
328 | if (opt->binary == GREP_BINARY_NOMATCH) |
329 | push_arg("-I"); | |
1e2398d7 | 330 | if (opt->word_regexp) |
ffa0a7ab | 331 | push_arg("-w"); |
1e2398d7 | 332 | if (opt->name_only) |
ffa0a7ab JH |
333 | push_arg("-l"); |
334 | if (opt->unmatch_name_only) | |
335 | push_arg("-L"); | |
83caecca RZ |
336 | if (opt->null_following_name) |
337 | /* in GNU grep git's "-z" translates to "-Z" */ | |
338 | push_arg("-Z"); | |
ffa0a7ab JH |
339 | if (opt->count) |
340 | push_arg("-c"); | |
341 | if (opt->post_context || opt->pre_context) { | |
342 | if (opt->post_context != opt->pre_context) { | |
343 | if (opt->pre_context) { | |
344 | push_arg("-B"); | |
345 | len += snprintf(argptr, sizeof(randarg)-len, | |
4b87474b | 346 | "%u", opt->pre_context) + 1; |
ffa0a7ab JH |
347 | if (sizeof(randarg) <= len) |
348 | die("maximum length of args exceeded"); | |
349 | push_arg(argptr); | |
350 | argptr += len; | |
351 | } | |
352 | if (opt->post_context) { | |
353 | push_arg("-A"); | |
354 | len += snprintf(argptr, sizeof(randarg)-len, | |
4b87474b | 355 | "%u", opt->post_context) + 1; |
ffa0a7ab JH |
356 | if (sizeof(randarg) <= len) |
357 | die("maximum length of args exceeded"); | |
358 | push_arg(argptr); | |
359 | argptr += len; | |
360 | } | |
361 | } | |
362 | else { | |
363 | push_arg("-C"); | |
364 | len += snprintf(argptr, sizeof(randarg)-len, | |
4b87474b | 365 | "%u", opt->post_context) + 1; |
ffa0a7ab JH |
366 | if (sizeof(randarg) <= len) |
367 | die("maximum length of args exceeded"); | |
368 | push_arg(argptr); | |
369 | argptr += len; | |
370 | } | |
371 | } | |
1e2398d7 | 372 | for (p = opt->pattern_list; p; p = p->next) { |
ffa0a7ab JH |
373 | push_arg("-e"); |
374 | push_arg(p->pattern); | |
1e2398d7 | 375 | } |
a94982ef RS |
376 | if (opt->color) { |
377 | struct strbuf sb = STRBUF_INIT; | |
378 | ||
379 | grep_add_color(&sb, opt->color_match); | |
380 | setenv("GREP_COLOR", sb.buf, 1); | |
381 | ||
382 | strbuf_reset(&sb); | |
383 | strbuf_addstr(&sb, "mt="); | |
384 | grep_add_color(&sb, opt->color_match); | |
385 | strbuf_addstr(&sb, ":sl=:cx=:fn=:ln=:bn=:se="); | |
386 | setenv("GREP_COLORS", sb.buf, 1); | |
387 | ||
388 | strbuf_release(&sb); | |
389 | ||
390 | if (opt->color_external && strlen(opt->color_external) > 0) | |
391 | push_arg(opt->color_external); | |
392 | } | |
bbb66c60 | 393 | |
1e2398d7 LT |
394 | hit = 0; |
395 | argc = nr; | |
396 | for (i = 0; i < active_nr; i++) { | |
397 | struct cache_entry *ce = active_cache[i]; | |
fbd01abf | 398 | char *name; |
d99ebf08 | 399 | int kept; |
7a51ed66 | 400 | if (!S_ISREG(ce->ce_mode)) |
1e2398d7 LT |
401 | continue; |
402 | if (!pathspec_matches(paths, ce->name)) | |
403 | continue; | |
bbb66c60 LT |
404 | name = ce->name; |
405 | if (name[0] == '-') { | |
406 | int len = ce_namelen(ce); | |
407 | name = xmalloc(len + 3); | |
408 | memcpy(name, "./", 2); | |
409 | memcpy(name + 2, ce->name, len + 1); | |
410 | } | |
411 | argv[argc++] = name; | |
6326cee5 JH |
412 | if (MAXARGS <= argc) { |
413 | status = flush_grep(opt, argc, nr, argv, &kept); | |
414 | if (0 < status) | |
415 | hit = 1; | |
416 | argc = nr + kept; | |
417 | } | |
36f2587f JH |
418 | if (ce_stage(ce)) { |
419 | do { | |
420 | i++; | |
421 | } while (i < active_nr && | |
422 | !strcmp(ce->name, active_cache[i]->name)); | |
423 | i--; /* compensate for loop control */ | |
424 | } | |
1e2398d7 | 425 | } |
fcfe34b5 | 426 | if (argc > nr) { |
d99ebf08 | 427 | status = flush_grep(opt, argc, nr, argv, NULL); |
fcfe34b5 JH |
428 | if (0 < status) |
429 | hit = 1; | |
430 | } | |
431 | return hit; | |
1e2398d7 | 432 | } |
ff1f9945 | 433 | #endif |
1e2398d7 | 434 | |
1362671f | 435 | static int grep_cache(struct grep_opt *opt, const char **paths, int cached) |
5010cb5f JH |
436 | { |
437 | int hit = 0; | |
438 | int nr; | |
439 | read_cache(); | |
440 | ||
5f7c643a | 441 | #if !NO_EXTERNAL_GREP |
1e2398d7 LT |
442 | /* |
443 | * Use the external "grep" command for the case where | |
444 | * we grep through the checked-out files. It tends to | |
445 | * be a lot more optimized | |
446 | */ | |
e70b9a8b | 447 | if (!cached && !builtin_grep) { |
1e2398d7 LT |
448 | hit = external_grep(opt, paths, cached); |
449 | if (hit >= 0) | |
450 | return hit; | |
451 | } | |
452 | #endif | |
453 | ||
5010cb5f JH |
454 | for (nr = 0; nr < active_nr; nr++) { |
455 | struct cache_entry *ce = active_cache[nr]; | |
7a51ed66 | 456 | if (!S_ISREG(ce->ce_mode)) |
5010cb5f | 457 | continue; |
1362671f | 458 | if (!pathspec_matches(paths, ce->name)) |
5010cb5f | 459 | continue; |
57d43466 NTND |
460 | /* |
461 | * If CE_VALID is on, we assume worktree file and its cache entry | |
462 | * are identical, even if worktree file has been modified, so use | |
463 | * cache version instead | |
464 | */ | |
465 | if (cached || (ce->ce_flags & CE_VALID)) { | |
36f2587f JH |
466 | if (ce_stage(ce)) |
467 | continue; | |
0d042fec | 468 | hit |= grep_sha1(opt, ce->sha1, ce->name, 0); |
36f2587f | 469 | } |
5010cb5f JH |
470 | else |
471 | hit |= grep_file(opt, ce->name); | |
36f2587f JH |
472 | if (ce_stage(ce)) { |
473 | do { | |
474 | nr++; | |
475 | } while (nr < active_nr && | |
476 | !strcmp(ce->name, active_cache[nr]->name)); | |
477 | nr--; /* compensate for loop control */ | |
478 | } | |
5010cb5f | 479 | } |
b48fb5b6 | 480 | free_grep_patterns(opt); |
5010cb5f JH |
481 | return hit; |
482 | } | |
483 | ||
1362671f | 484 | static int grep_tree(struct grep_opt *opt, const char **paths, |
5010cb5f JH |
485 | struct tree_desc *tree, |
486 | const char *tree_name, const char *base) | |
487 | { | |
5010cb5f JH |
488 | int len; |
489 | int hit = 0; | |
4c068a98 | 490 | struct name_entry entry; |
e0eb889f | 491 | char *down; |
0d042fec | 492 | int tn_len = strlen(tree_name); |
620e2bb9 DP |
493 | struct strbuf pathbuf; |
494 | ||
495 | strbuf_init(&pathbuf, PATH_MAX + tn_len); | |
5010cb5f | 496 | |
0d042fec | 497 | if (tn_len) { |
620e2bb9 DP |
498 | strbuf_add(&pathbuf, tree_name, tn_len); |
499 | strbuf_addch(&pathbuf, ':'); | |
500 | tn_len = pathbuf.len; | |
5010cb5f | 501 | } |
620e2bb9 DP |
502 | strbuf_addstr(&pathbuf, base); |
503 | len = pathbuf.len; | |
5010cb5f | 504 | |
4c068a98 | 505 | while (tree_entry(tree, &entry)) { |
620e2bb9 DP |
506 | int te_len = tree_entry_len(entry.path, entry.sha1); |
507 | pathbuf.len = len; | |
508 | strbuf_add(&pathbuf, entry.path, te_len); | |
5010cb5f | 509 | |
4c068a98 | 510 | if (S_ISDIR(entry.mode)) |
e0eb889f JH |
511 | /* Match "abc/" against pathspec to |
512 | * decide if we want to descend into "abc" | |
513 | * directory. | |
514 | */ | |
620e2bb9 | 515 | strbuf_addch(&pathbuf, '/'); |
e0eb889f | 516 | |
620e2bb9 | 517 | down = pathbuf.buf + tn_len; |
1362671f | 518 | if (!pathspec_matches(paths, down)) |
5010cb5f | 519 | ; |
4c068a98 | 520 | else if (S_ISREG(entry.mode)) |
620e2bb9 | 521 | hit |= grep_sha1(opt, entry.sha1, pathbuf.buf, tn_len); |
4c068a98 | 522 | else if (S_ISDIR(entry.mode)) { |
21666f1a | 523 | enum object_type type; |
5010cb5f JH |
524 | struct tree_desc sub; |
525 | void *data; | |
6fda5e51 LT |
526 | unsigned long size; |
527 | ||
528 | data = read_sha1_file(entry.sha1, &type, &size); | |
5010cb5f JH |
529 | if (!data) |
530 | die("unable to read tree (%s)", | |
4c068a98 | 531 | sha1_to_hex(entry.sha1)); |
6fda5e51 | 532 | init_tree_desc(&sub, data, size); |
1362671f | 533 | hit |= grep_tree(opt, paths, &sub, tree_name, down); |
5010cb5f JH |
534 | free(data); |
535 | } | |
5010cb5f | 536 | } |
620e2bb9 | 537 | strbuf_release(&pathbuf); |
5010cb5f JH |
538 | return hit; |
539 | } | |
540 | ||
1362671f | 541 | static int grep_object(struct grep_opt *opt, const char **paths, |
5010cb5f JH |
542 | struct object *obj, const char *name) |
543 | { | |
1974632c | 544 | if (obj->type == OBJ_BLOB) |
0d042fec | 545 | return grep_sha1(opt, obj->sha1, name, 0); |
1974632c | 546 | if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) { |
5010cb5f JH |
547 | struct tree_desc tree; |
548 | void *data; | |
6fda5e51 | 549 | unsigned long size; |
5010cb5f JH |
550 | int hit; |
551 | data = read_object_with_reference(obj->sha1, tree_type, | |
6fda5e51 | 552 | &size, NULL); |
5010cb5f JH |
553 | if (!data) |
554 | die("unable to read tree (%s)", sha1_to_hex(obj->sha1)); | |
6fda5e51 | 555 | init_tree_desc(&tree, data, size); |
1362671f | 556 | hit = grep_tree(opt, paths, &tree, name, ""); |
5010cb5f JH |
557 | free(data); |
558 | return hit; | |
559 | } | |
885a86ab | 560 | die("unable to grep from object of type %s", typename(obj->type)); |
5010cb5f JH |
561 | } |
562 | ||
563 | static const char builtin_grep_usage[] = | |
fa4946b5 | 564 | "git grep <option>* [-e] <pattern> <rev>* [[--] <path>...]"; |
5010cb5f | 565 | |
088b084b JH |
566 | static const char emsg_invalid_context_len[] = |
567 | "%s: invalid context length argument"; | |
568 | static const char emsg_missing_context_len[] = | |
569 | "missing context length argument"; | |
570 | static const char emsg_missing_argument[] = | |
571 | "option requires an argument -%s"; | |
572 | ||
a633fca0 | 573 | int cmd_grep(int argc, const char **argv, const char *prefix) |
5010cb5f | 574 | { |
5010cb5f | 575 | int hit = 0; |
5010cb5f | 576 | int cached = 0; |
5acd64ed | 577 | int seen_dashdash = 0; |
5010cb5f | 578 | struct grep_opt opt; |
1f1e895f | 579 | struct object_array list = { 0, 0, NULL }; |
1362671f | 580 | const char **paths = NULL; |
5acd64ed | 581 | int i; |
5010cb5f JH |
582 | |
583 | memset(&opt, 0, sizeof(opt)); | |
0d042fec JH |
584 | opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; |
585 | opt.relative = 1; | |
7977f0ea | 586 | opt.pathname = 1; |
f9b9faf6 | 587 | opt.pattern_tail = &opt.pattern_list; |
5010cb5f JH |
588 | opt.regflags = REG_NEWLINE; |
589 | ||
7e8f59d5 RS |
590 | strcpy(opt.color_match, GIT_COLOR_RED GIT_COLOR_BOLD); |
591 | opt.color = -1; | |
592 | git_config(grep_config, &opt); | |
593 | if (opt.color == -1) | |
594 | opt.color = git_use_color_default; | |
595 | ||
5010cb5f | 596 | /* |
5acd64ed JH |
597 | * If there is no -- then the paths must exist in the working |
598 | * tree. If there is no explicit pattern specified with -e or | |
599 | * -f, we take the first unrecognized non option to be the | |
600 | * pattern, but then what follows it must be zero or more | |
601 | * valid refs up to the -- (if exists), and then existing | |
602 | * paths. If there is an explicit pattern, then the first | |
82e5a82f | 603 | * unrecognized non option is the beginning of the refs list |
5acd64ed | 604 | * that continues up to the -- (if exists), and then paths. |
5010cb5f | 605 | */ |
5acd64ed | 606 | |
1362671f JH |
607 | while (1 < argc) { |
608 | const char *arg = argv[1]; | |
609 | argc--; argv++; | |
610 | if (!strcmp("--cached", arg)) { | |
611 | cached = 1; | |
612 | continue; | |
613 | } | |
e70b9a8b NTND |
614 | if (!strcmp("--no-ext-grep", arg)) { |
615 | builtin_grep = 1; | |
616 | continue; | |
617 | } | |
b8d0f5a0 JH |
618 | if (!strcmp("-a", arg) || |
619 | !strcmp("--text", arg)) { | |
620 | opt.binary = GREP_BINARY_TEXT; | |
621 | continue; | |
622 | } | |
1362671f JH |
623 | if (!strcmp("-i", arg) || |
624 | !strcmp("--ignore-case", arg)) { | |
625 | opt.regflags |= REG_ICASE; | |
626 | continue; | |
627 | } | |
b8d0f5a0 JH |
628 | if (!strcmp("-I", arg)) { |
629 | opt.binary = GREP_BINARY_NOMATCH; | |
630 | continue; | |
631 | } | |
1362671f JH |
632 | if (!strcmp("-v", arg) || |
633 | !strcmp("--invert-match", arg)) { | |
634 | opt.invert = 1; | |
635 | continue; | |
636 | } | |
637 | if (!strcmp("-E", arg) || | |
638 | !strcmp("--extended-regexp", arg)) { | |
639 | opt.regflags |= REG_EXTENDED; | |
640 | continue; | |
641 | } | |
07ea91d8 JH |
642 | if (!strcmp("-F", arg) || |
643 | !strcmp("--fixed-strings", arg)) { | |
644 | opt.fixed = 1; | |
645 | continue; | |
646 | } | |
1362671f JH |
647 | if (!strcmp("-G", arg) || |
648 | !strcmp("--basic-regexp", arg)) { | |
649 | opt.regflags &= ~REG_EXTENDED; | |
650 | continue; | |
651 | } | |
652 | if (!strcmp("-n", arg)) { | |
653 | opt.linenum = 1; | |
654 | continue; | |
655 | } | |
7977f0ea LT |
656 | if (!strcmp("-h", arg)) { |
657 | opt.pathname = 0; | |
658 | continue; | |
659 | } | |
1362671f | 660 | if (!strcmp("-H", arg)) { |
7977f0ea | 661 | opt.pathname = 1; |
1362671f JH |
662 | continue; |
663 | } | |
664 | if (!strcmp("-l", arg) || | |
2cd5dfd2 | 665 | !strcmp("--name-only", arg) || |
1362671f JH |
666 | !strcmp("--files-with-matches", arg)) { |
667 | opt.name_only = 1; | |
668 | continue; | |
669 | } | |
e23d2d6b JH |
670 | if (!strcmp("-L", arg) || |
671 | !strcmp("--files-without-match", arg)) { | |
672 | opt.unmatch_name_only = 1; | |
673 | continue; | |
674 | } | |
83caecca RZ |
675 | if (!strcmp("-z", arg) || |
676 | !strcmp("--null", arg)) { | |
677 | opt.null_following_name = 1; | |
678 | continue; | |
679 | } | |
2c866cf1 JH |
680 | if (!strcmp("-c", arg) || |
681 | !strcmp("--count", arg)) { | |
682 | opt.count = 1; | |
683 | continue; | |
684 | } | |
7839a25e JH |
685 | if (!strcmp("-w", arg) || |
686 | !strcmp("--word-regexp", arg)) { | |
687 | opt.word_regexp = 1; | |
688 | continue; | |
689 | } | |
599065a3 JH |
690 | if (!prefixcmp(arg, "-A") || |
691 | !prefixcmp(arg, "-B") || | |
692 | !prefixcmp(arg, "-C") || | |
f462ebb4 | 693 | (arg[0] == '-' && '1' <= arg[1] && arg[1] <= '9')) { |
1362671f | 694 | unsigned num; |
f462ebb4 JH |
695 | const char *scan; |
696 | switch (arg[1]) { | |
697 | case 'A': case 'B': case 'C': | |
698 | if (!arg[2]) { | |
699 | if (argc <= 1) | |
088b084b | 700 | die(emsg_missing_context_len); |
f462ebb4 JH |
701 | scan = *++argv; |
702 | argc--; | |
703 | } | |
704 | else | |
705 | scan = arg + 2; | |
706 | break; | |
707 | default: | |
708 | scan = arg + 1; | |
709 | break; | |
710 | } | |
6aead43d | 711 | if (strtoul_ui(scan, 10, &num)) |
088b084b | 712 | die(emsg_invalid_context_len, scan); |
1362671f JH |
713 | switch (arg[1]) { |
714 | case 'A': | |
715 | opt.post_context = num; | |
716 | break; | |
f462ebb4 | 717 | default: |
1362671f JH |
718 | case 'C': |
719 | opt.post_context = num; | |
720 | case 'B': | |
721 | opt.pre_context = num; | |
722 | break; | |
5010cb5f | 723 | } |
1362671f JH |
724 | continue; |
725 | } | |
aa8c79ad JH |
726 | if (!strcmp("-f", arg)) { |
727 | FILE *patterns; | |
728 | int lno = 0; | |
729 | char buf[1024]; | |
730 | if (argc <= 1) | |
088b084b | 731 | die(emsg_missing_argument, arg); |
aa8c79ad JH |
732 | patterns = fopen(argv[1], "r"); |
733 | if (!patterns) | |
5acd64ed | 734 | die("'%s': %s", argv[1], strerror(errno)); |
aa8c79ad JH |
735 | while (fgets(buf, sizeof(buf), patterns)) { |
736 | int len = strlen(buf); | |
872c930d | 737 | if (len && buf[len-1] == '\n') |
aa8c79ad JH |
738 | buf[len-1] = 0; |
739 | /* ignore empty line like grep does */ | |
740 | if (!buf[0]) | |
741 | continue; | |
83b5d2f5 JH |
742 | append_grep_pattern(&opt, xstrdup(buf), |
743 | argv[1], ++lno, | |
744 | GREP_PATTERN); | |
aa8c79ad JH |
745 | } |
746 | fclose(patterns); | |
747 | argv++; | |
748 | argc--; | |
749 | continue; | |
750 | } | |
79d3696c | 751 | if (!strcmp("--not", arg)) { |
83b5d2f5 JH |
752 | append_grep_pattern(&opt, arg, "command line", 0, |
753 | GREP_NOT); | |
79d3696c JH |
754 | continue; |
755 | } | |
756 | if (!strcmp("--and", arg)) { | |
83b5d2f5 JH |
757 | append_grep_pattern(&opt, arg, "command line", 0, |
758 | GREP_AND); | |
79d3696c JH |
759 | continue; |
760 | } | |
761 | if (!strcmp("--or", arg)) | |
762 | continue; /* no-op */ | |
763 | if (!strcmp("(", arg)) { | |
83b5d2f5 JH |
764 | append_grep_pattern(&opt, arg, "command line", 0, |
765 | GREP_OPEN_PAREN); | |
79d3696c JH |
766 | continue; |
767 | } | |
768 | if (!strcmp(")", arg)) { | |
83b5d2f5 JH |
769 | append_grep_pattern(&opt, arg, "command line", 0, |
770 | GREP_CLOSE_PAREN); | |
79d3696c JH |
771 | continue; |
772 | } | |
0ab7befa JH |
773 | if (!strcmp("--all-match", arg)) { |
774 | opt.all_match = 1; | |
775 | continue; | |
776 | } | |
1362671f JH |
777 | if (!strcmp("-e", arg)) { |
778 | if (1 < argc) { | |
83b5d2f5 JH |
779 | append_grep_pattern(&opt, argv[1], |
780 | "-e option", 0, | |
781 | GREP_PATTERN); | |
f9b9faf6 | 782 | argv++; |
1362671f | 783 | argc--; |
5010cb5f JH |
784 | continue; |
785 | } | |
088b084b | 786 | die(emsg_missing_argument, arg); |
1362671f | 787 | } |
0d042fec JH |
788 | if (!strcmp("--full-name", arg)) { |
789 | opt.relative = 0; | |
790 | continue; | |
791 | } | |
7e8f59d5 RS |
792 | if (!strcmp("--color", arg)) { |
793 | opt.color = 1; | |
794 | continue; | |
795 | } | |
796 | if (!strcmp("--no-color", arg)) { | |
797 | opt.color = 0; | |
798 | continue; | |
799 | } | |
5390590f JH |
800 | if (!strcmp("--", arg)) { |
801 | /* later processing wants to have this at argv[1] */ | |
802 | argv--; | |
803 | argc++; | |
5acd64ed | 804 | break; |
5390590f | 805 | } |
5acd64ed | 806 | if (*arg == '-') |
1362671f | 807 | usage(builtin_grep_usage); |
5acd64ed JH |
808 | |
809 | /* First unrecognized non-option token */ | |
f9b9faf6 | 810 | if (!opt.pattern_list) { |
83b5d2f5 JH |
811 | append_grep_pattern(&opt, arg, "command line", 0, |
812 | GREP_PATTERN); | |
1362671f JH |
813 | break; |
814 | } | |
815 | else { | |
816 | /* We are looking at the first path or rev; | |
5acd64ed | 817 | * it is found at argv[1] after leaving the |
1362671f JH |
818 | * loop. |
819 | */ | |
820 | argc++; argv--; | |
821 | break; | |
5010cb5f | 822 | } |
5010cb5f | 823 | } |
5acd64ed | 824 | |
6e89ec0f NTND |
825 | if (opt.color && !opt.color_external) |
826 | builtin_grep = 1; | |
f9b9faf6 | 827 | if (!opt.pattern_list) |
5010cb5f | 828 | die("no pattern given."); |
07ea91d8 JH |
829 | if ((opt.regflags != REG_NEWLINE) && opt.fixed) |
830 | die("cannot mix --fixed-strings and regexp"); | |
83b5d2f5 | 831 | compile_grep_patterns(&opt); |
5acd64ed JH |
832 | |
833 | /* Check revs and then paths */ | |
834 | for (i = 1; i < argc; i++) { | |
835 | const char *arg = argv[i]; | |
1362671f | 836 | unsigned char sha1[20]; |
5acd64ed JH |
837 | /* Is it a rev? */ |
838 | if (!get_sha1(arg, sha1)) { | |
839 | struct object *object = parse_object(sha1); | |
5acd64ed JH |
840 | if (!object) |
841 | die("bad object %s", arg); | |
1f1e895f | 842 | add_object_array(object, arg, &list); |
5acd64ed JH |
843 | continue; |
844 | } | |
845 | if (!strcmp(arg, "--")) { | |
846 | i++; | |
847 | seen_dashdash = 1; | |
848 | } | |
849 | break; | |
1362671f | 850 | } |
5acd64ed JH |
851 | |
852 | /* The rest are paths */ | |
853 | if (!seen_dashdash) { | |
854 | int j; | |
c39c4f47 | 855 | for (j = i; j < argc; j++) |
5acd64ed JH |
856 | verify_filename(prefix, argv[j]); |
857 | } | |
858 | ||
0d042fec | 859 | if (i < argc) { |
5acd64ed | 860 | paths = get_pathspec(prefix, argv + i); |
0d042fec JH |
861 | if (opt.prefix_length && opt.relative) { |
862 | /* Make sure we do not get outside of paths */ | |
863 | for (i = 0; paths[i]; i++) | |
864 | if (strncmp(prefix, paths[i], opt.prefix_length)) | |
7e44c935 | 865 | die("git grep: cannot generate relative filenames containing '..'"); |
0d042fec JH |
866 | } |
867 | } | |
1362671f JH |
868 | else if (prefix) { |
869 | paths = xcalloc(2, sizeof(const char *)); | |
870 | paths[0] = prefix; | |
871 | paths[1] = NULL; | |
872 | } | |
5010cb5f | 873 | |
6577f542 NTND |
874 | if (!list.nr) { |
875 | if (!cached) | |
876 | setup_work_tree(); | |
1362671f | 877 | return !grep_cache(&opt, paths, cached); |
6577f542 | 878 | } |
aa8c79ad | 879 | |
5010cb5f | 880 | if (cached) |
aa8c79ad | 881 | die("both --cached and trees are given."); |
5010cb5f | 882 | |
1f1e895f | 883 | for (i = 0; i < list.nr; i++) { |
5010cb5f | 884 | struct object *real_obj; |
1f1e895f LT |
885 | real_obj = deref_tag(list.objects[i].item, NULL, 0); |
886 | if (grep_object(&opt, paths, real_obj, list.objects[i].name)) | |
5010cb5f JH |
887 | hit = 1; |
888 | } | |
b48fb5b6 | 889 | free_grep_patterns(&opt); |
5010cb5f JH |
890 | return !hit; |
891 | } |