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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 | |
e0eb889f JH |
15 | /* |
16 | * git grep pathspecs are somewhat different from diff-tree pathspecs; | |
17 | * pathname wildcards are allowed. | |
18 | */ | |
1362671f | 19 | static int pathspec_matches(const char **paths, const char *name) |
5010cb5f | 20 | { |
e0eb889f | 21 | int namelen, i; |
1362671f | 22 | if (!paths || !*paths) |
5010cb5f JH |
23 | return 1; |
24 | namelen = strlen(name); | |
1362671f JH |
25 | for (i = 0; paths[i]; i++) { |
26 | const char *match = paths[i]; | |
27 | int matchlen = strlen(match); | |
1e3d90e0 | 28 | const char *cp, *meta; |
e0eb889f | 29 | |
bb9e15a8 UKK |
30 | if (!matchlen || |
31 | ((matchlen <= namelen) && | |
32 | !strncmp(name, match, matchlen) && | |
33 | (match[matchlen-1] == '/' || | |
34 | name[matchlen] == '\0' || name[matchlen] == '/'))) | |
e0eb889f JH |
35 | return 1; |
36 | if (!fnmatch(match, name, 0)) | |
37 | return 1; | |
38 | if (name[namelen-1] != '/') | |
5010cb5f | 39 | continue; |
e0eb889f | 40 | |
1e3d90e0 | 41 | /* We are being asked if the directory ("name") is worth |
e0eb889f JH |
42 | * descending into. |
43 | * | |
44 | * Find the longest leading directory name that does | |
45 | * not have metacharacter in the pathspec; the name | |
46 | * we are looking at must overlap with that directory. | |
5010cb5f | 47 | */ |
1e3d90e0 | 48 | for (cp = match, meta = NULL; cp - match < matchlen; cp++) { |
e0eb889f | 49 | char ch = *cp; |
1e3d90e0 JH |
50 | if (ch == '*' || ch == '[' || ch == '?') { |
51 | meta = cp; | |
5010cb5f | 52 | break; |
1e3d90e0 | 53 | } |
e0eb889f | 54 | } |
1e3d90e0 JH |
55 | if (!meta) |
56 | meta = cp; /* fully literal */ | |
57 | ||
58 | if (namelen <= meta - match) { | |
e0eb889f JH |
59 | /* Looking at "Documentation/" and |
60 | * the pattern says "Documentation/howto/", or | |
1e3d90e0 JH |
61 | * "Documentation/diff*.txt". The name we |
62 | * have should match prefix. | |
e0eb889f JH |
63 | */ |
64 | if (!memcmp(match, name, namelen)) | |
65 | return 1; | |
1e3d90e0 | 66 | continue; |
e0eb889f | 67 | } |
1e3d90e0 JH |
68 | |
69 | if (meta - match < namelen) { | |
e0eb889f | 70 | /* Looking at "Documentation/howto/" and |
1e3d90e0 JH |
71 | * the pattern says "Documentation/h*"; |
72 | * match up to "Do.../h"; this avoids descending | |
73 | * into "Documentation/technical/". | |
e0eb889f | 74 | */ |
1e3d90e0 | 75 | if (!memcmp(match, name, meta - match)) |
e0eb889f | 76 | return 1; |
1e3d90e0 | 77 | continue; |
e0eb889f | 78 | } |
5010cb5f JH |
79 | } |
80 | return 0; | |
81 | } | |
82 | ||
0d042fec | 83 | static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name, int tree_name_len) |
5010cb5f JH |
84 | { |
85 | unsigned long size; | |
86 | char *data; | |
87 | char type[20]; | |
0d042fec | 88 | char *to_free = NULL; |
5010cb5f | 89 | int hit; |
0d042fec | 90 | |
5010cb5f JH |
91 | data = read_sha1_file(sha1, type, &size); |
92 | if (!data) { | |
93 | error("'%s': unable to read %s", name, sha1_to_hex(sha1)); | |
94 | return 0; | |
95 | } | |
0d042fec JH |
96 | if (opt->relative && opt->prefix_length) { |
97 | static char name_buf[PATH_MAX]; | |
98 | char *cp; | |
99 | int name_len = strlen(name) - opt->prefix_length + 1; | |
100 | ||
101 | if (!tree_name_len) | |
102 | name += opt->prefix_length; | |
103 | else { | |
104 | if (ARRAY_SIZE(name_buf) <= name_len) | |
105 | cp = to_free = xmalloc(name_len); | |
106 | else | |
107 | cp = name_buf; | |
108 | memcpy(cp, name, tree_name_len); | |
109 | strcpy(cp + tree_name_len, | |
110 | name + tree_name_len + opt->prefix_length); | |
111 | name = cp; | |
112 | } | |
113 | } | |
5010cb5f JH |
114 | hit = grep_buffer(opt, name, data, size); |
115 | free(data); | |
0d042fec | 116 | free(to_free); |
5010cb5f JH |
117 | return hit; |
118 | } | |
119 | ||
120 | static int grep_file(struct grep_opt *opt, const char *filename) | |
121 | { | |
122 | struct stat st; | |
123 | int i; | |
124 | char *data; | |
125 | if (lstat(filename, &st) < 0) { | |
126 | err_ret: | |
127 | if (errno != ENOENT) | |
128 | error("'%s': %s", filename, strerror(errno)); | |
129 | return 0; | |
130 | } | |
131 | if (!st.st_size) | |
132 | return 0; /* empty file -- no grep hit */ | |
133 | if (!S_ISREG(st.st_mode)) | |
134 | return 0; | |
135 | i = open(filename, O_RDONLY); | |
136 | if (i < 0) | |
137 | goto err_ret; | |
138 | data = xmalloc(st.st_size + 1); | |
139 | if (st.st_size != xread(i, data, st.st_size)) { | |
140 | error("'%s': short read %s", filename, strerror(errno)); | |
141 | close(i); | |
142 | free(data); | |
143 | return 0; | |
144 | } | |
145 | close(i); | |
0d042fec JH |
146 | if (opt->relative && opt->prefix_length) |
147 | filename += opt->prefix_length; | |
5010cb5f JH |
148 | i = grep_buffer(opt, filename, data, st.st_size); |
149 | free(data); | |
150 | return i; | |
151 | } | |
152 | ||
1e2398d7 LT |
153 | static int exec_grep(int argc, const char **argv) |
154 | { | |
155 | pid_t pid; | |
156 | int status; | |
157 | ||
158 | argv[argc] = NULL; | |
159 | pid = fork(); | |
160 | if (pid < 0) | |
161 | return pid; | |
162 | if (!pid) { | |
163 | execvp("grep", (char **) argv); | |
164 | exit(255); | |
165 | } | |
166 | while (waitpid(pid, &status, 0) < 0) { | |
167 | if (errno == EINTR) | |
168 | continue; | |
169 | return -1; | |
170 | } | |
171 | if (WIFEXITED(status)) { | |
172 | if (!WEXITSTATUS(status)) | |
173 | return 1; | |
174 | return 0; | |
175 | } | |
176 | return -1; | |
177 | } | |
178 | ||
179 | #define MAXARGS 1000 | |
ffa0a7ab JH |
180 | #define ARGBUF 4096 |
181 | #define push_arg(a) do { \ | |
182 | if (nr < MAXARGS) argv[nr++] = (a); \ | |
183 | else die("maximum number of args exceeded"); \ | |
184 | } while (0) | |
1e2398d7 LT |
185 | |
186 | static int external_grep(struct grep_opt *opt, const char **paths, int cached) | |
187 | { | |
fcfe34b5 | 188 | int i, nr, argc, hit, len, status; |
1e2398d7 | 189 | const char *argv[MAXARGS+1]; |
ffa0a7ab JH |
190 | char randarg[ARGBUF]; |
191 | char *argptr = randarg; | |
1e2398d7 LT |
192 | struct grep_pat *p; |
193 | ||
0d042fec | 194 | if (opt->extended || (opt->relative && opt->prefix_length)) |
79d3696c | 195 | return -1; |
ffa0a7ab JH |
196 | len = nr = 0; |
197 | push_arg("grep"); | |
ffa0a7ab | 198 | if (opt->fixed) |
f6647519 | 199 | push_arg("-F"); |
ffa0a7ab JH |
200 | if (opt->linenum) |
201 | push_arg("-n"); | |
7977f0ea LT |
202 | if (!opt->pathname) |
203 | push_arg("-h"); | |
ffa0a7ab JH |
204 | if (opt->regflags & REG_EXTENDED) |
205 | push_arg("-E"); | |
3026402c RF |
206 | if (opt->regflags & REG_ICASE) |
207 | push_arg("-i"); | |
1e2398d7 | 208 | if (opt->word_regexp) |
ffa0a7ab | 209 | push_arg("-w"); |
1e2398d7 | 210 | if (opt->name_only) |
ffa0a7ab JH |
211 | push_arg("-l"); |
212 | if (opt->unmatch_name_only) | |
213 | push_arg("-L"); | |
214 | if (opt->count) | |
215 | push_arg("-c"); | |
216 | if (opt->post_context || opt->pre_context) { | |
217 | if (opt->post_context != opt->pre_context) { | |
218 | if (opt->pre_context) { | |
219 | push_arg("-B"); | |
220 | len += snprintf(argptr, sizeof(randarg)-len, | |
221 | "%u", opt->pre_context); | |
222 | if (sizeof(randarg) <= len) | |
223 | die("maximum length of args exceeded"); | |
224 | push_arg(argptr); | |
225 | argptr += len; | |
226 | } | |
227 | if (opt->post_context) { | |
228 | push_arg("-A"); | |
229 | len += snprintf(argptr, sizeof(randarg)-len, | |
230 | "%u", opt->post_context); | |
231 | if (sizeof(randarg) <= len) | |
232 | die("maximum length of args exceeded"); | |
233 | push_arg(argptr); | |
234 | argptr += len; | |
235 | } | |
236 | } | |
237 | else { | |
238 | push_arg("-C"); | |
239 | len += snprintf(argptr, sizeof(randarg)-len, | |
240 | "%u", opt->post_context); | |
241 | if (sizeof(randarg) <= len) | |
242 | die("maximum length of args exceeded"); | |
243 | push_arg(argptr); | |
244 | argptr += len; | |
245 | } | |
246 | } | |
1e2398d7 | 247 | for (p = opt->pattern_list; p; p = p->next) { |
ffa0a7ab JH |
248 | push_arg("-e"); |
249 | push_arg(p->pattern); | |
1e2398d7 | 250 | } |
bbb66c60 LT |
251 | |
252 | /* | |
253 | * To make sure we get the header printed out when we want it, | |
254 | * add /dev/null to the paths to grep. This is unnecessary | |
255 | * (and wrong) with "-l" or "-L", which always print out the | |
256 | * name anyway. | |
257 | * | |
258 | * GNU grep has "-H", but this is portable. | |
259 | */ | |
260 | if (!opt->name_only && !opt->unmatch_name_only) | |
261 | push_arg("/dev/null"); | |
1e2398d7 LT |
262 | |
263 | hit = 0; | |
264 | argc = nr; | |
265 | for (i = 0; i < active_nr; i++) { | |
266 | struct cache_entry *ce = active_cache[i]; | |
fbd01abf | 267 | char *name; |
36f2587f | 268 | if (!S_ISREG(ntohl(ce->ce_mode))) |
1e2398d7 LT |
269 | continue; |
270 | if (!pathspec_matches(paths, ce->name)) | |
271 | continue; | |
bbb66c60 LT |
272 | name = ce->name; |
273 | if (name[0] == '-') { | |
274 | int len = ce_namelen(ce); | |
275 | name = xmalloc(len + 3); | |
276 | memcpy(name, "./", 2); | |
277 | memcpy(name + 2, ce->name, len + 1); | |
278 | } | |
279 | argv[argc++] = name; | |
36f2587f | 280 | if (argc < MAXARGS && !ce_stage(ce)) |
1e2398d7 | 281 | continue; |
fcfe34b5 JH |
282 | status = exec_grep(argc, argv); |
283 | if (0 < status) | |
284 | hit = 1; | |
1e2398d7 | 285 | argc = nr; |
36f2587f JH |
286 | if (ce_stage(ce)) { |
287 | do { | |
288 | i++; | |
289 | } while (i < active_nr && | |
290 | !strcmp(ce->name, active_cache[i]->name)); | |
291 | i--; /* compensate for loop control */ | |
292 | } | |
1e2398d7 | 293 | } |
fcfe34b5 JH |
294 | if (argc > nr) { |
295 | status = exec_grep(argc, argv); | |
296 | if (0 < status) | |
297 | hit = 1; | |
298 | } | |
299 | return hit; | |
1e2398d7 LT |
300 | } |
301 | ||
1362671f | 302 | static int grep_cache(struct grep_opt *opt, const char **paths, int cached) |
5010cb5f JH |
303 | { |
304 | int hit = 0; | |
305 | int nr; | |
306 | read_cache(); | |
307 | ||
1e2398d7 LT |
308 | #ifdef __unix__ |
309 | /* | |
310 | * Use the external "grep" command for the case where | |
311 | * we grep through the checked-out files. It tends to | |
312 | * be a lot more optimized | |
313 | */ | |
314 | if (!cached) { | |
315 | hit = external_grep(opt, paths, cached); | |
316 | if (hit >= 0) | |
317 | return hit; | |
318 | } | |
319 | #endif | |
320 | ||
5010cb5f JH |
321 | for (nr = 0; nr < active_nr; nr++) { |
322 | struct cache_entry *ce = active_cache[nr]; | |
36f2587f | 323 | if (!S_ISREG(ntohl(ce->ce_mode))) |
5010cb5f | 324 | continue; |
1362671f | 325 | if (!pathspec_matches(paths, ce->name)) |
5010cb5f | 326 | continue; |
36f2587f JH |
327 | if (cached) { |
328 | if (ce_stage(ce)) | |
329 | continue; | |
0d042fec | 330 | hit |= grep_sha1(opt, ce->sha1, ce->name, 0); |
36f2587f | 331 | } |
5010cb5f JH |
332 | else |
333 | hit |= grep_file(opt, ce->name); | |
36f2587f JH |
334 | if (ce_stage(ce)) { |
335 | do { | |
336 | nr++; | |
337 | } while (nr < active_nr && | |
338 | !strcmp(ce->name, active_cache[nr]->name)); | |
339 | nr--; /* compensate for loop control */ | |
340 | } | |
5010cb5f | 341 | } |
b48fb5b6 | 342 | free_grep_patterns(opt); |
5010cb5f JH |
343 | return hit; |
344 | } | |
345 | ||
1362671f | 346 | static int grep_tree(struct grep_opt *opt, const char **paths, |
5010cb5f JH |
347 | struct tree_desc *tree, |
348 | const char *tree_name, const char *base) | |
349 | { | |
5010cb5f JH |
350 | int len; |
351 | int hit = 0; | |
4c068a98 | 352 | struct name_entry entry; |
e0eb889f | 353 | char *down; |
0d042fec JH |
354 | int tn_len = strlen(tree_name); |
355 | char *path_buf = xmalloc(PATH_MAX + tn_len + 100); | |
5010cb5f | 356 | |
0d042fec JH |
357 | if (tn_len) { |
358 | tn_len = sprintf(path_buf, "%s:", tree_name); | |
359 | down = path_buf + tn_len; | |
e0eb889f | 360 | strcat(down, base); |
5010cb5f JH |
361 | } |
362 | else { | |
e0eb889f JH |
363 | down = path_buf; |
364 | strcpy(down, base); | |
5010cb5f JH |
365 | } |
366 | len = strlen(path_buf); | |
367 | ||
4c068a98 LT |
368 | while (tree_entry(tree, &entry)) { |
369 | strcpy(path_buf + len, entry.path); | |
5010cb5f | 370 | |
4c068a98 | 371 | if (S_ISDIR(entry.mode)) |
e0eb889f JH |
372 | /* Match "abc/" against pathspec to |
373 | * decide if we want to descend into "abc" | |
374 | * directory. | |
375 | */ | |
4c068a98 | 376 | strcpy(path_buf + len + entry.pathlen, "/"); |
e0eb889f | 377 | |
1362671f | 378 | if (!pathspec_matches(paths, down)) |
5010cb5f | 379 | ; |
4c068a98 | 380 | else if (S_ISREG(entry.mode)) |
0d042fec | 381 | hit |= grep_sha1(opt, entry.sha1, path_buf, tn_len); |
4c068a98 | 382 | else if (S_ISDIR(entry.mode)) { |
5010cb5f JH |
383 | char type[20]; |
384 | struct tree_desc sub; | |
385 | void *data; | |
4c068a98 | 386 | data = read_sha1_file(entry.sha1, type, &sub.size); |
5010cb5f JH |
387 | if (!data) |
388 | die("unable to read tree (%s)", | |
4c068a98 | 389 | sha1_to_hex(entry.sha1)); |
5010cb5f | 390 | sub.buf = data; |
1362671f | 391 | hit |= grep_tree(opt, paths, &sub, tree_name, down); |
5010cb5f JH |
392 | free(data); |
393 | } | |
5010cb5f JH |
394 | } |
395 | return hit; | |
396 | } | |
397 | ||
1362671f | 398 | static int grep_object(struct grep_opt *opt, const char **paths, |
5010cb5f JH |
399 | struct object *obj, const char *name) |
400 | { | |
1974632c | 401 | if (obj->type == OBJ_BLOB) |
0d042fec | 402 | return grep_sha1(opt, obj->sha1, name, 0); |
1974632c | 403 | if (obj->type == OBJ_COMMIT || obj->type == OBJ_TREE) { |
5010cb5f JH |
404 | struct tree_desc tree; |
405 | void *data; | |
406 | int hit; | |
407 | data = read_object_with_reference(obj->sha1, tree_type, | |
408 | &tree.size, NULL); | |
409 | if (!data) | |
410 | die("unable to read tree (%s)", sha1_to_hex(obj->sha1)); | |
411 | tree.buf = data; | |
1362671f | 412 | hit = grep_tree(opt, paths, &tree, name, ""); |
5010cb5f JH |
413 | free(data); |
414 | return hit; | |
415 | } | |
885a86ab | 416 | die("unable to grep from object of type %s", typename(obj->type)); |
5010cb5f JH |
417 | } |
418 | ||
419 | static const char builtin_grep_usage[] = | |
420 | "git-grep <option>* <rev>* [-e] <pattern> [<path>...]"; | |
421 | ||
088b084b JH |
422 | static const char emsg_invalid_context_len[] = |
423 | "%s: invalid context length argument"; | |
424 | static const char emsg_missing_context_len[] = | |
425 | "missing context length argument"; | |
426 | static const char emsg_missing_argument[] = | |
427 | "option requires an argument -%s"; | |
428 | ||
a633fca0 | 429 | int cmd_grep(int argc, const char **argv, const char *prefix) |
5010cb5f | 430 | { |
5010cb5f | 431 | int hit = 0; |
5010cb5f | 432 | int cached = 0; |
5acd64ed | 433 | int seen_dashdash = 0; |
5010cb5f | 434 | struct grep_opt opt; |
1f1e895f | 435 | struct object_array list = { 0, 0, NULL }; |
1362671f | 436 | const char **paths = NULL; |
5acd64ed | 437 | int i; |
5010cb5f JH |
438 | |
439 | memset(&opt, 0, sizeof(opt)); | |
0d042fec JH |
440 | opt.prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; |
441 | opt.relative = 1; | |
7977f0ea | 442 | opt.pathname = 1; |
f9b9faf6 | 443 | opt.pattern_tail = &opt.pattern_list; |
5010cb5f JH |
444 | opt.regflags = REG_NEWLINE; |
445 | ||
446 | /* | |
5acd64ed JH |
447 | * If there is no -- then the paths must exist in the working |
448 | * tree. If there is no explicit pattern specified with -e or | |
449 | * -f, we take the first unrecognized non option to be the | |
450 | * pattern, but then what follows it must be zero or more | |
451 | * valid refs up to the -- (if exists), and then existing | |
452 | * paths. If there is an explicit pattern, then the first | |
82e5a82f | 453 | * unrecognized non option is the beginning of the refs list |
5acd64ed | 454 | * that continues up to the -- (if exists), and then paths. |
5010cb5f | 455 | */ |
5acd64ed | 456 | |
1362671f JH |
457 | while (1 < argc) { |
458 | const char *arg = argv[1]; | |
459 | argc--; argv++; | |
460 | if (!strcmp("--cached", arg)) { | |
461 | cached = 1; | |
462 | continue; | |
463 | } | |
b8d0f5a0 JH |
464 | if (!strcmp("-a", arg) || |
465 | !strcmp("--text", arg)) { | |
466 | opt.binary = GREP_BINARY_TEXT; | |
467 | continue; | |
468 | } | |
1362671f JH |
469 | if (!strcmp("-i", arg) || |
470 | !strcmp("--ignore-case", arg)) { | |
471 | opt.regflags |= REG_ICASE; | |
472 | continue; | |
473 | } | |
b8d0f5a0 JH |
474 | if (!strcmp("-I", arg)) { |
475 | opt.binary = GREP_BINARY_NOMATCH; | |
476 | continue; | |
477 | } | |
1362671f JH |
478 | if (!strcmp("-v", arg) || |
479 | !strcmp("--invert-match", arg)) { | |
480 | opt.invert = 1; | |
481 | continue; | |
482 | } | |
483 | if (!strcmp("-E", arg) || | |
484 | !strcmp("--extended-regexp", arg)) { | |
485 | opt.regflags |= REG_EXTENDED; | |
486 | continue; | |
487 | } | |
07ea91d8 JH |
488 | if (!strcmp("-F", arg) || |
489 | !strcmp("--fixed-strings", arg)) { | |
490 | opt.fixed = 1; | |
491 | continue; | |
492 | } | |
1362671f JH |
493 | if (!strcmp("-G", arg) || |
494 | !strcmp("--basic-regexp", arg)) { | |
495 | opt.regflags &= ~REG_EXTENDED; | |
496 | continue; | |
497 | } | |
498 | if (!strcmp("-n", arg)) { | |
499 | opt.linenum = 1; | |
500 | continue; | |
501 | } | |
7977f0ea LT |
502 | if (!strcmp("-h", arg)) { |
503 | opt.pathname = 0; | |
504 | continue; | |
505 | } | |
1362671f | 506 | if (!strcmp("-H", arg)) { |
7977f0ea | 507 | opt.pathname = 1; |
1362671f JH |
508 | continue; |
509 | } | |
510 | if (!strcmp("-l", arg) || | |
511 | !strcmp("--files-with-matches", arg)) { | |
512 | opt.name_only = 1; | |
513 | continue; | |
514 | } | |
e23d2d6b JH |
515 | if (!strcmp("-L", arg) || |
516 | !strcmp("--files-without-match", arg)) { | |
517 | opt.unmatch_name_only = 1; | |
518 | continue; | |
519 | } | |
2c866cf1 JH |
520 | if (!strcmp("-c", arg) || |
521 | !strcmp("--count", arg)) { | |
522 | opt.count = 1; | |
523 | continue; | |
524 | } | |
7839a25e JH |
525 | if (!strcmp("-w", arg) || |
526 | !strcmp("--word-regexp", arg)) { | |
527 | opt.word_regexp = 1; | |
528 | continue; | |
529 | } | |
f462ebb4 JH |
530 | if (!strncmp("-A", arg, 2) || |
531 | !strncmp("-B", arg, 2) || | |
532 | !strncmp("-C", arg, 2) || | |
533 | (arg[0] == '-' && '1' <= arg[1] && arg[1] <= '9')) { | |
1362671f | 534 | unsigned num; |
f462ebb4 JH |
535 | const char *scan; |
536 | switch (arg[1]) { | |
537 | case 'A': case 'B': case 'C': | |
538 | if (!arg[2]) { | |
539 | if (argc <= 1) | |
088b084b | 540 | die(emsg_missing_context_len); |
f462ebb4 JH |
541 | scan = *++argv; |
542 | argc--; | |
543 | } | |
544 | else | |
545 | scan = arg + 2; | |
546 | break; | |
547 | default: | |
548 | scan = arg + 1; | |
549 | break; | |
550 | } | |
551 | if (sscanf(scan, "%u", &num) != 1) | |
088b084b | 552 | die(emsg_invalid_context_len, scan); |
1362671f JH |
553 | switch (arg[1]) { |
554 | case 'A': | |
555 | opt.post_context = num; | |
556 | break; | |
f462ebb4 | 557 | default: |
1362671f JH |
558 | case 'C': |
559 | opt.post_context = num; | |
560 | case 'B': | |
561 | opt.pre_context = num; | |
562 | break; | |
5010cb5f | 563 | } |
1362671f JH |
564 | continue; |
565 | } | |
aa8c79ad JH |
566 | if (!strcmp("-f", arg)) { |
567 | FILE *patterns; | |
568 | int lno = 0; | |
569 | char buf[1024]; | |
570 | if (argc <= 1) | |
088b084b | 571 | die(emsg_missing_argument, arg); |
aa8c79ad JH |
572 | patterns = fopen(argv[1], "r"); |
573 | if (!patterns) | |
5acd64ed | 574 | die("'%s': %s", argv[1], strerror(errno)); |
aa8c79ad JH |
575 | while (fgets(buf, sizeof(buf), patterns)) { |
576 | int len = strlen(buf); | |
577 | if (buf[len-1] == '\n') | |
578 | buf[len-1] = 0; | |
579 | /* ignore empty line like grep does */ | |
580 | if (!buf[0]) | |
581 | continue; | |
83b5d2f5 JH |
582 | append_grep_pattern(&opt, xstrdup(buf), |
583 | argv[1], ++lno, | |
584 | GREP_PATTERN); | |
aa8c79ad JH |
585 | } |
586 | fclose(patterns); | |
587 | argv++; | |
588 | argc--; | |
589 | continue; | |
590 | } | |
79d3696c | 591 | if (!strcmp("--not", arg)) { |
83b5d2f5 JH |
592 | append_grep_pattern(&opt, arg, "command line", 0, |
593 | GREP_NOT); | |
79d3696c JH |
594 | continue; |
595 | } | |
596 | if (!strcmp("--and", arg)) { | |
83b5d2f5 JH |
597 | append_grep_pattern(&opt, arg, "command line", 0, |
598 | GREP_AND); | |
79d3696c JH |
599 | continue; |
600 | } | |
601 | if (!strcmp("--or", arg)) | |
602 | continue; /* no-op */ | |
603 | if (!strcmp("(", arg)) { | |
83b5d2f5 JH |
604 | append_grep_pattern(&opt, arg, "command line", 0, |
605 | GREP_OPEN_PAREN); | |
79d3696c JH |
606 | continue; |
607 | } | |
608 | if (!strcmp(")", arg)) { | |
83b5d2f5 JH |
609 | append_grep_pattern(&opt, arg, "command line", 0, |
610 | GREP_CLOSE_PAREN); | |
79d3696c JH |
611 | continue; |
612 | } | |
0ab7befa JH |
613 | if (!strcmp("--all-match", arg)) { |
614 | opt.all_match = 1; | |
615 | continue; | |
616 | } | |
1362671f JH |
617 | if (!strcmp("-e", arg)) { |
618 | if (1 < argc) { | |
83b5d2f5 JH |
619 | append_grep_pattern(&opt, argv[1], |
620 | "-e option", 0, | |
621 | GREP_PATTERN); | |
f9b9faf6 | 622 | argv++; |
1362671f | 623 | argc--; |
5010cb5f JH |
624 | continue; |
625 | } | |
088b084b | 626 | die(emsg_missing_argument, arg); |
1362671f | 627 | } |
0d042fec JH |
628 | if (!strcmp("--full-name", arg)) { |
629 | opt.relative = 0; | |
630 | continue; | |
631 | } | |
5390590f JH |
632 | if (!strcmp("--", arg)) { |
633 | /* later processing wants to have this at argv[1] */ | |
634 | argv--; | |
635 | argc++; | |
5acd64ed | 636 | break; |
5390590f | 637 | } |
5acd64ed | 638 | if (*arg == '-') |
1362671f | 639 | usage(builtin_grep_usage); |
5acd64ed JH |
640 | |
641 | /* First unrecognized non-option token */ | |
f9b9faf6 | 642 | if (!opt.pattern_list) { |
83b5d2f5 JH |
643 | append_grep_pattern(&opt, arg, "command line", 0, |
644 | GREP_PATTERN); | |
1362671f JH |
645 | break; |
646 | } | |
647 | else { | |
648 | /* We are looking at the first path or rev; | |
5acd64ed | 649 | * it is found at argv[1] after leaving the |
1362671f JH |
650 | * loop. |
651 | */ | |
652 | argc++; argv--; | |
653 | break; | |
5010cb5f | 654 | } |
5010cb5f | 655 | } |
5acd64ed | 656 | |
f9b9faf6 | 657 | if (!opt.pattern_list) |
5010cb5f | 658 | die("no pattern given."); |
07ea91d8 JH |
659 | if ((opt.regflags != REG_NEWLINE) && opt.fixed) |
660 | die("cannot mix --fixed-strings and regexp"); | |
83b5d2f5 | 661 | compile_grep_patterns(&opt); |
5acd64ed JH |
662 | |
663 | /* Check revs and then paths */ | |
664 | for (i = 1; i < argc; i++) { | |
665 | const char *arg = argv[i]; | |
1362671f | 666 | unsigned char sha1[20]; |
5acd64ed JH |
667 | /* Is it a rev? */ |
668 | if (!get_sha1(arg, sha1)) { | |
669 | struct object *object = parse_object(sha1); | |
5acd64ed JH |
670 | if (!object) |
671 | die("bad object %s", arg); | |
1f1e895f | 672 | add_object_array(object, arg, &list); |
5acd64ed JH |
673 | continue; |
674 | } | |
675 | if (!strcmp(arg, "--")) { | |
676 | i++; | |
677 | seen_dashdash = 1; | |
678 | } | |
679 | break; | |
1362671f | 680 | } |
5acd64ed JH |
681 | |
682 | /* The rest are paths */ | |
683 | if (!seen_dashdash) { | |
684 | int j; | |
c39c4f47 | 685 | for (j = i; j < argc; j++) |
5acd64ed JH |
686 | verify_filename(prefix, argv[j]); |
687 | } | |
688 | ||
0d042fec | 689 | if (i < argc) { |
5acd64ed | 690 | paths = get_pathspec(prefix, argv + i); |
0d042fec JH |
691 | if (opt.prefix_length && opt.relative) { |
692 | /* Make sure we do not get outside of paths */ | |
693 | for (i = 0; paths[i]; i++) | |
694 | if (strncmp(prefix, paths[i], opt.prefix_length)) | |
695 | die("git-grep: cannot generate relative filenames containing '..'"); | |
696 | } | |
697 | } | |
1362671f JH |
698 | else if (prefix) { |
699 | paths = xcalloc(2, sizeof(const char *)); | |
700 | paths[0] = prefix; | |
701 | paths[1] = NULL; | |
702 | } | |
5010cb5f | 703 | |
1f1e895f | 704 | if (!list.nr) |
1362671f | 705 | return !grep_cache(&opt, paths, cached); |
aa8c79ad | 706 | |
5010cb5f | 707 | if (cached) |
aa8c79ad | 708 | die("both --cached and trees are given."); |
5010cb5f | 709 | |
1f1e895f | 710 | for (i = 0; i < list.nr; i++) { |
5010cb5f | 711 | struct object *real_obj; |
1f1e895f LT |
712 | real_obj = deref_tag(list.objects[i].item, NULL, 0); |
713 | if (grep_object(&opt, paths, real_obj, list.objects[i].name)) | |
5010cb5f JH |
714 | hit = 1; |
715 | } | |
b48fb5b6 | 716 | free_grep_patterns(&opt); |
5010cb5f JH |
717 | return !hit; |
718 | } |