]>
Commit | Line | Data |
---|---|---|
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 JH |
12 | #include "builtin.h" |
13 | #include <regex.h> | |
e0eb889f | 14 | #include <fnmatch.h> |
5010cb5f | 15 | |
e0eb889f JH |
16 | /* |
17 | * git grep pathspecs are somewhat different from diff-tree pathspecs; | |
18 | * pathname wildcards are allowed. | |
19 | */ | |
1362671f | 20 | static int pathspec_matches(const char **paths, const char *name) |
5010cb5f | 21 | { |
e0eb889f | 22 | int namelen, i; |
1362671f | 23 | if (!paths || !*paths) |
5010cb5f JH |
24 | return 1; |
25 | namelen = strlen(name); | |
1362671f JH |
26 | for (i = 0; paths[i]; i++) { |
27 | const char *match = paths[i]; | |
28 | int matchlen = strlen(match); | |
1e3d90e0 | 29 | const char *cp, *meta; |
e0eb889f JH |
30 | |
31 | if ((matchlen <= namelen) && | |
32 | !strncmp(name, match, matchlen) && | |
33 | (match[matchlen-1] == '/' || | |
34 | name[matchlen] == '\0' || name[matchlen] == '/')) | |
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 | ||
f9b9faf6 JH |
83 | struct grep_pat { |
84 | struct grep_pat *next; | |
aa8c79ad JH |
85 | const char *origin; |
86 | int no; | |
5010cb5f JH |
87 | const char *pattern; |
88 | regex_t regexp; | |
f9b9faf6 JH |
89 | }; |
90 | ||
91 | struct grep_opt { | |
92 | struct grep_pat *pattern_list; | |
93 | struct grep_pat **pattern_tail; | |
94 | regex_t regexp; | |
5010cb5f JH |
95 | unsigned linenum:1; |
96 | unsigned invert:1; | |
df0e7aa8 | 97 | unsigned name_only:1; |
e23d2d6b | 98 | unsigned unmatch_name_only:1; |
2c866cf1 | 99 | unsigned count:1; |
7839a25e | 100 | unsigned word_regexp:1; |
b8d0f5a0 JH |
101 | #define GREP_BINARY_DEFAULT 0 |
102 | #define GREP_BINARY_NOMATCH 1 | |
103 | #define GREP_BINARY_TEXT 2 | |
104 | unsigned binary:2; | |
5010cb5f JH |
105 | int regflags; |
106 | unsigned pre_context; | |
107 | unsigned post_context; | |
108 | }; | |
109 | ||
aa8c79ad JH |
110 | static void add_pattern(struct grep_opt *opt, const char *pat, |
111 | const char *origin, int no) | |
f9b9faf6 JH |
112 | { |
113 | struct grep_pat *p = xcalloc(1, sizeof(*p)); | |
114 | p->pattern = pat; | |
aa8c79ad JH |
115 | p->origin = origin; |
116 | p->no = no; | |
f9b9faf6 JH |
117 | *opt->pattern_tail = p; |
118 | opt->pattern_tail = &p->next; | |
119 | p->next = NULL; | |
120 | } | |
121 | ||
122 | static void compile_patterns(struct grep_opt *opt) | |
123 | { | |
124 | struct grep_pat *p; | |
125 | for (p = opt->pattern_list; p; p = p->next) { | |
126 | int err = regcomp(&p->regexp, p->pattern, opt->regflags); | |
127 | if (err) { | |
128 | char errbuf[1024]; | |
aa8c79ad JH |
129 | char where[1024]; |
130 | if (p->no) | |
131 | sprintf(where, "In '%s' at %d, ", | |
132 | p->origin, p->no); | |
133 | else if (p->origin) | |
134 | sprintf(where, "%s, ", p->origin); | |
135 | else | |
136 | where[0] = 0; | |
f9b9faf6 JH |
137 | regerror(err, &p->regexp, errbuf, 1024); |
138 | regfree(&p->regexp); | |
aa8c79ad | 139 | die("%s'%s': %s", where, p->pattern, errbuf); |
f9b9faf6 JH |
140 | } |
141 | } | |
142 | } | |
143 | ||
5010cb5f JH |
144 | static char *end_of_line(char *cp, unsigned long *left) |
145 | { | |
146 | unsigned long l = *left; | |
147 | while (l && *cp != '\n') { | |
148 | l--; | |
149 | cp++; | |
150 | } | |
151 | *left = l; | |
152 | return cp; | |
153 | } | |
154 | ||
7839a25e JH |
155 | static int word_char(char ch) |
156 | { | |
157 | return isalnum(ch) || ch == '_'; | |
158 | } | |
159 | ||
5010cb5f JH |
160 | static void show_line(struct grep_opt *opt, const char *bol, const char *eol, |
161 | const char *name, unsigned lno, char sign) | |
162 | { | |
163 | printf("%s%c", name, sign); | |
164 | if (opt->linenum) | |
165 | printf("%d%c", lno, sign); | |
a24f1e25 | 166 | printf("%.*s\n", (int)(eol-bol), bol); |
5010cb5f JH |
167 | } |
168 | ||
b8d0f5a0 JH |
169 | /* |
170 | * NEEDSWORK: share code with diff.c | |
171 | */ | |
172 | #define FIRST_FEW_BYTES 8000 | |
173 | static int buffer_is_binary(const char *ptr, unsigned long size) | |
174 | { | |
175 | if (FIRST_FEW_BYTES < size) | |
176 | size = FIRST_FEW_BYTES; | |
177 | if (memchr(ptr, 0, size)) | |
178 | return 1; | |
179 | return 0; | |
180 | } | |
181 | ||
5010cb5f JH |
182 | static int grep_buffer(struct grep_opt *opt, const char *name, |
183 | char *buf, unsigned long size) | |
184 | { | |
185 | char *bol = buf; | |
186 | unsigned long left = size; | |
187 | unsigned lno = 1; | |
188 | struct pre_context_line { | |
189 | char *bol; | |
190 | char *eol; | |
191 | } *prev = NULL, *pcl; | |
192 | unsigned last_hit = 0; | |
193 | unsigned last_shown = 0; | |
b8d0f5a0 | 194 | int binary_match_only = 0; |
5010cb5f | 195 | const char *hunk_mark = ""; |
2c866cf1 | 196 | unsigned count = 0; |
5010cb5f | 197 | |
b8d0f5a0 JH |
198 | if (buffer_is_binary(buf, size)) { |
199 | switch (opt->binary) { | |
200 | case GREP_BINARY_DEFAULT: | |
201 | binary_match_only = 1; | |
202 | break; | |
203 | case GREP_BINARY_NOMATCH: | |
204 | return 0; /* Assume unmatch */ | |
205 | break; | |
206 | default: | |
207 | break; | |
208 | } | |
209 | } | |
210 | ||
5010cb5f JH |
211 | if (opt->pre_context) |
212 | prev = xcalloc(opt->pre_context, sizeof(*prev)); | |
213 | if (opt->pre_context || opt->post_context) | |
214 | hunk_mark = "--\n"; | |
215 | ||
216 | while (left) { | |
217 | regmatch_t pmatch[10]; | |
218 | char *eol, ch; | |
f9b9faf6 JH |
219 | int hit = 0; |
220 | struct grep_pat *p; | |
5010cb5f JH |
221 | |
222 | eol = end_of_line(bol, &left); | |
223 | ch = *eol; | |
224 | *eol = 0; | |
225 | ||
f9b9faf6 JH |
226 | for (p = opt->pattern_list; p; p = p->next) { |
227 | regex_t *exp = &p->regexp; | |
228 | hit = !regexec(exp, bol, ARRAY_SIZE(pmatch), | |
229 | pmatch, 0); | |
7839a25e JH |
230 | |
231 | if (hit && opt->word_regexp) { | |
232 | /* Match beginning must be either | |
233 | * beginning of the line, or at word | |
234 | * boundary (i.e. the last char must | |
235 | * not be alnum or underscore). | |
236 | */ | |
237 | if ((pmatch[0].rm_so < 0) || | |
238 | (eol - bol) <= pmatch[0].rm_so || | |
239 | (pmatch[0].rm_eo < 0) || | |
240 | (eol - bol) < pmatch[0].rm_eo) | |
241 | die("regexp returned nonsense"); | |
242 | if (pmatch[0].rm_so != 0 && | |
243 | word_char(bol[pmatch[0].rm_so-1])) | |
244 | continue; /* not a word boundary */ | |
245 | if ((eol-bol) < pmatch[0].rm_eo && | |
246 | word_char(bol[pmatch[0].rm_eo])) | |
247 | continue; /* not a word boundary */ | |
248 | } | |
f9b9faf6 JH |
249 | if (hit) |
250 | break; | |
251 | } | |
252 | /* "grep -v -e foo -e bla" should list lines | |
253 | * that do not have either, so inversion should | |
254 | * be done outside. | |
255 | */ | |
5010cb5f JH |
256 | if (opt->invert) |
257 | hit = !hit; | |
e23d2d6b JH |
258 | if (opt->unmatch_name_only) { |
259 | if (hit) | |
260 | return 0; | |
261 | goto next_line; | |
262 | } | |
5010cb5f | 263 | if (hit) { |
2c866cf1 | 264 | count++; |
b8d0f5a0 JH |
265 | if (binary_match_only) { |
266 | printf("Binary file %s matches\n", name); | |
267 | return 1; | |
268 | } | |
df0e7aa8 JH |
269 | if (opt->name_only) { |
270 | printf("%s\n", name); | |
271 | return 1; | |
272 | } | |
5010cb5f JH |
273 | /* Hit at this line. If we haven't shown the |
274 | * pre-context lines, we would need to show them. | |
2c866cf1 JH |
275 | * When asked to do "count", this still show |
276 | * the context which is nonsense, but the user | |
277 | * deserves to get that ;-). | |
5010cb5f JH |
278 | */ |
279 | if (opt->pre_context) { | |
280 | unsigned from; | |
281 | if (opt->pre_context < lno) | |
282 | from = lno - opt->pre_context; | |
283 | else | |
284 | from = 1; | |
285 | if (from <= last_shown) | |
286 | from = last_shown + 1; | |
287 | if (last_shown && from != last_shown + 1) | |
288 | printf(hunk_mark); | |
289 | while (from < lno) { | |
290 | pcl = &prev[lno-from-1]; | |
291 | show_line(opt, pcl->bol, pcl->eol, | |
292 | name, from, '-'); | |
293 | from++; | |
294 | } | |
295 | last_shown = lno-1; | |
296 | } | |
297 | if (last_shown && lno != last_shown + 1) | |
298 | printf(hunk_mark); | |
2c866cf1 JH |
299 | if (!opt->count) |
300 | show_line(opt, bol, eol, name, lno, ':'); | |
5010cb5f JH |
301 | last_shown = last_hit = lno; |
302 | } | |
303 | else if (last_hit && | |
304 | lno <= last_hit + opt->post_context) { | |
305 | /* If the last hit is within the post context, | |
306 | * we need to show this line. | |
307 | */ | |
308 | if (last_shown && lno != last_shown + 1) | |
309 | printf(hunk_mark); | |
310 | show_line(opt, bol, eol, name, lno, '-'); | |
311 | last_shown = lno; | |
312 | } | |
313 | if (opt->pre_context) { | |
314 | memmove(prev+1, prev, | |
315 | (opt->pre_context-1) * sizeof(*prev)); | |
316 | prev->bol = bol; | |
317 | prev->eol = eol; | |
318 | } | |
e23d2d6b JH |
319 | |
320 | next_line: | |
5010cb5f JH |
321 | *eol = ch; |
322 | bol = eol + 1; | |
7ed36f56 JH |
323 | if (!left) |
324 | break; | |
5010cb5f JH |
325 | left--; |
326 | lno++; | |
327 | } | |
e23d2d6b JH |
328 | |
329 | if (opt->unmatch_name_only) { | |
330 | /* We did not see any hit, so we want to show this */ | |
331 | printf("%s\n", name); | |
332 | return 1; | |
333 | } | |
334 | ||
2c866cf1 JH |
335 | /* NEEDSWORK: |
336 | * The real "grep -c foo *.c" gives many "bar.c:0" lines, | |
337 | * which feels mostly useless but sometimes useful. Maybe | |
338 | * make it another option? For now suppress them. | |
339 | */ | |
340 | if (opt->count && count) | |
341 | printf("%s:%u\n", name, count); | |
5010cb5f JH |
342 | return !!last_hit; |
343 | } | |
344 | ||
345 | static int grep_sha1(struct grep_opt *opt, const unsigned char *sha1, const char *name) | |
346 | { | |
347 | unsigned long size; | |
348 | char *data; | |
349 | char type[20]; | |
350 | int hit; | |
351 | data = read_sha1_file(sha1, type, &size); | |
352 | if (!data) { | |
353 | error("'%s': unable to read %s", name, sha1_to_hex(sha1)); | |
354 | return 0; | |
355 | } | |
356 | hit = grep_buffer(opt, name, data, size); | |
357 | free(data); | |
358 | return hit; | |
359 | } | |
360 | ||
361 | static int grep_file(struct grep_opt *opt, const char *filename) | |
362 | { | |
363 | struct stat st; | |
364 | int i; | |
365 | char *data; | |
366 | if (lstat(filename, &st) < 0) { | |
367 | err_ret: | |
368 | if (errno != ENOENT) | |
369 | error("'%s': %s", filename, strerror(errno)); | |
370 | return 0; | |
371 | } | |
372 | if (!st.st_size) | |
373 | return 0; /* empty file -- no grep hit */ | |
374 | if (!S_ISREG(st.st_mode)) | |
375 | return 0; | |
376 | i = open(filename, O_RDONLY); | |
377 | if (i < 0) | |
378 | goto err_ret; | |
379 | data = xmalloc(st.st_size + 1); | |
380 | if (st.st_size != xread(i, data, st.st_size)) { | |
381 | error("'%s': short read %s", filename, strerror(errno)); | |
382 | close(i); | |
383 | free(data); | |
384 | return 0; | |
385 | } | |
386 | close(i); | |
387 | i = grep_buffer(opt, filename, data, st.st_size); | |
388 | free(data); | |
389 | return i; | |
390 | } | |
391 | ||
1362671f | 392 | static int grep_cache(struct grep_opt *opt, const char **paths, int cached) |
5010cb5f JH |
393 | { |
394 | int hit = 0; | |
395 | int nr; | |
396 | read_cache(); | |
397 | ||
398 | for (nr = 0; nr < active_nr; nr++) { | |
399 | struct cache_entry *ce = active_cache[nr]; | |
400 | if (ce_stage(ce) || !S_ISREG(ntohl(ce->ce_mode))) | |
401 | continue; | |
1362671f | 402 | if (!pathspec_matches(paths, ce->name)) |
5010cb5f JH |
403 | continue; |
404 | if (cached) | |
405 | hit |= grep_sha1(opt, ce->sha1, ce->name); | |
406 | else | |
407 | hit |= grep_file(opt, ce->name); | |
408 | } | |
409 | return hit; | |
410 | } | |
411 | ||
1362671f | 412 | static int grep_tree(struct grep_opt *opt, const char **paths, |
5010cb5f JH |
413 | struct tree_desc *tree, |
414 | const char *tree_name, const char *base) | |
415 | { | |
416 | unsigned mode; | |
417 | int len; | |
418 | int hit = 0; | |
419 | const char *path; | |
420 | const unsigned char *sha1; | |
e0eb889f | 421 | char *down; |
5010cb5f JH |
422 | char *path_buf = xmalloc(PATH_MAX + strlen(tree_name) + 100); |
423 | ||
424 | if (tree_name[0]) { | |
425 | int offset = sprintf(path_buf, "%s:", tree_name); | |
e0eb889f JH |
426 | down = path_buf + offset; |
427 | strcat(down, base); | |
5010cb5f JH |
428 | } |
429 | else { | |
e0eb889f JH |
430 | down = path_buf; |
431 | strcpy(down, base); | |
5010cb5f JH |
432 | } |
433 | len = strlen(path_buf); | |
434 | ||
435 | while (tree->size) { | |
436 | int pathlen; | |
437 | sha1 = tree_entry_extract(tree, &path, &mode); | |
438 | pathlen = strlen(path); | |
439 | strcpy(path_buf + len, path); | |
440 | ||
e0eb889f JH |
441 | if (S_ISDIR(mode)) |
442 | /* Match "abc/" against pathspec to | |
443 | * decide if we want to descend into "abc" | |
444 | * directory. | |
445 | */ | |
446 | strcpy(path_buf + len + pathlen, "/"); | |
447 | ||
1362671f | 448 | if (!pathspec_matches(paths, down)) |
5010cb5f JH |
449 | ; |
450 | else if (S_ISREG(mode)) | |
451 | hit |= grep_sha1(opt, sha1, path_buf); | |
452 | else if (S_ISDIR(mode)) { | |
453 | char type[20]; | |
454 | struct tree_desc sub; | |
455 | void *data; | |
456 | data = read_sha1_file(sha1, type, &sub.size); | |
457 | if (!data) | |
458 | die("unable to read tree (%s)", | |
459 | sha1_to_hex(sha1)); | |
5010cb5f | 460 | sub.buf = data; |
1362671f | 461 | hit |= grep_tree(opt, paths, &sub, tree_name, down); |
5010cb5f JH |
462 | free(data); |
463 | } | |
464 | update_tree_entry(tree); | |
465 | } | |
466 | return hit; | |
467 | } | |
468 | ||
1362671f | 469 | static int grep_object(struct grep_opt *opt, const char **paths, |
5010cb5f JH |
470 | struct object *obj, const char *name) |
471 | { | |
472 | if (!strcmp(obj->type, blob_type)) | |
473 | return grep_sha1(opt, obj->sha1, name); | |
474 | if (!strcmp(obj->type, commit_type) || | |
475 | !strcmp(obj->type, tree_type)) { | |
476 | struct tree_desc tree; | |
477 | void *data; | |
478 | int hit; | |
479 | data = read_object_with_reference(obj->sha1, tree_type, | |
480 | &tree.size, NULL); | |
481 | if (!data) | |
482 | die("unable to read tree (%s)", sha1_to_hex(obj->sha1)); | |
483 | tree.buf = data; | |
1362671f | 484 | hit = grep_tree(opt, paths, &tree, name, ""); |
5010cb5f JH |
485 | free(data); |
486 | return hit; | |
487 | } | |
488 | die("unable to grep from object of type %s", obj->type); | |
489 | } | |
490 | ||
491 | static const char builtin_grep_usage[] = | |
492 | "git-grep <option>* <rev>* [-e] <pattern> [<path>...]"; | |
493 | ||
494 | int cmd_grep(int argc, const char **argv, char **envp) | |
495 | { | |
5010cb5f | 496 | int hit = 0; |
1362671f | 497 | int no_more_flags = 0; |
5010cb5f JH |
498 | int cached = 0; |
499 | struct grep_opt opt; | |
1362671f JH |
500 | struct object_list *list, **tail, *object_list = NULL; |
501 | const char *prefix = setup_git_directory(); | |
502 | const char **paths = NULL; | |
5010cb5f JH |
503 | |
504 | memset(&opt, 0, sizeof(opt)); | |
f9b9faf6 | 505 | opt.pattern_tail = &opt.pattern_list; |
5010cb5f JH |
506 | opt.regflags = REG_NEWLINE; |
507 | ||
508 | /* | |
1362671f | 509 | * No point using rev_info, really. |
5010cb5f | 510 | */ |
1362671f JH |
511 | while (1 < argc) { |
512 | const char *arg = argv[1]; | |
513 | argc--; argv++; | |
514 | if (!strcmp("--cached", arg)) { | |
515 | cached = 1; | |
516 | continue; | |
517 | } | |
b8d0f5a0 JH |
518 | if (!strcmp("-a", arg) || |
519 | !strcmp("--text", arg)) { | |
520 | opt.binary = GREP_BINARY_TEXT; | |
521 | continue; | |
522 | } | |
1362671f JH |
523 | if (!strcmp("-i", arg) || |
524 | !strcmp("--ignore-case", arg)) { | |
525 | opt.regflags |= REG_ICASE; | |
526 | continue; | |
527 | } | |
b8d0f5a0 JH |
528 | if (!strcmp("-I", arg)) { |
529 | opt.binary = GREP_BINARY_NOMATCH; | |
530 | continue; | |
531 | } | |
1362671f JH |
532 | if (!strcmp("-v", arg) || |
533 | !strcmp("--invert-match", arg)) { | |
534 | opt.invert = 1; | |
535 | continue; | |
536 | } | |
537 | if (!strcmp("-E", arg) || | |
538 | !strcmp("--extended-regexp", arg)) { | |
539 | opt.regflags |= REG_EXTENDED; | |
540 | continue; | |
541 | } | |
542 | if (!strcmp("-G", arg) || | |
543 | !strcmp("--basic-regexp", arg)) { | |
544 | opt.regflags &= ~REG_EXTENDED; | |
545 | continue; | |
546 | } | |
547 | if (!strcmp("-n", arg)) { | |
548 | opt.linenum = 1; | |
549 | continue; | |
550 | } | |
551 | if (!strcmp("-H", arg)) { | |
552 | /* We always show the pathname, so this | |
553 | * is a noop. | |
554 | */ | |
555 | continue; | |
556 | } | |
557 | if (!strcmp("-l", arg) || | |
558 | !strcmp("--files-with-matches", arg)) { | |
559 | opt.name_only = 1; | |
560 | continue; | |
561 | } | |
e23d2d6b JH |
562 | if (!strcmp("-L", arg) || |
563 | !strcmp("--files-without-match", arg)) { | |
564 | opt.unmatch_name_only = 1; | |
565 | continue; | |
566 | } | |
2c866cf1 JH |
567 | if (!strcmp("-c", arg) || |
568 | !strcmp("--count", arg)) { | |
569 | opt.count = 1; | |
570 | continue; | |
571 | } | |
7839a25e JH |
572 | if (!strcmp("-w", arg) || |
573 | !strcmp("--word-regexp", arg)) { | |
574 | opt.word_regexp = 1; | |
575 | continue; | |
576 | } | |
f462ebb4 JH |
577 | if (!strncmp("-A", arg, 2) || |
578 | !strncmp("-B", arg, 2) || | |
579 | !strncmp("-C", arg, 2) || | |
580 | (arg[0] == '-' && '1' <= arg[1] && arg[1] <= '9')) { | |
1362671f | 581 | unsigned num; |
f462ebb4 JH |
582 | const char *scan; |
583 | switch (arg[1]) { | |
584 | case 'A': case 'B': case 'C': | |
585 | if (!arg[2]) { | |
586 | if (argc <= 1) | |
587 | usage(builtin_grep_usage); | |
588 | scan = *++argv; | |
589 | argc--; | |
590 | } | |
591 | else | |
592 | scan = arg + 2; | |
593 | break; | |
594 | default: | |
595 | scan = arg + 1; | |
596 | break; | |
597 | } | |
598 | if (sscanf(scan, "%u", &num) != 1) | |
5010cb5f | 599 | usage(builtin_grep_usage); |
1362671f JH |
600 | switch (arg[1]) { |
601 | case 'A': | |
602 | opt.post_context = num; | |
603 | break; | |
f462ebb4 | 604 | default: |
1362671f JH |
605 | case 'C': |
606 | opt.post_context = num; | |
607 | case 'B': | |
608 | opt.pre_context = num; | |
609 | break; | |
5010cb5f | 610 | } |
1362671f JH |
611 | continue; |
612 | } | |
aa8c79ad JH |
613 | if (!strcmp("-f", arg)) { |
614 | FILE *patterns; | |
615 | int lno = 0; | |
616 | char buf[1024]; | |
617 | if (argc <= 1) | |
618 | usage(builtin_grep_usage); | |
619 | patterns = fopen(argv[1], "r"); | |
620 | if (!patterns) | |
621 | die("'%s': %s", strerror(errno)); | |
622 | while (fgets(buf, sizeof(buf), patterns)) { | |
623 | int len = strlen(buf); | |
624 | if (buf[len-1] == '\n') | |
625 | buf[len-1] = 0; | |
626 | /* ignore empty line like grep does */ | |
627 | if (!buf[0]) | |
628 | continue; | |
629 | add_pattern(&opt, strdup(buf), argv[1], ++lno); | |
630 | } | |
631 | fclose(patterns); | |
632 | argv++; | |
633 | argc--; | |
634 | continue; | |
635 | } | |
1362671f JH |
636 | if (!strcmp("-e", arg)) { |
637 | if (1 < argc) { | |
aa8c79ad | 638 | add_pattern(&opt, argv[1], "-e option", 0); |
f9b9faf6 | 639 | argv++; |
1362671f | 640 | argc--; |
5010cb5f JH |
641 | continue; |
642 | } | |
1362671f JH |
643 | usage(builtin_grep_usage); |
644 | } | |
645 | if (!strcmp("--", arg)) { | |
646 | no_more_flags = 1; | |
647 | continue; | |
648 | } | |
649 | /* Either unrecognized option or a single pattern */ | |
650 | if (!no_more_flags && *arg == '-') | |
651 | usage(builtin_grep_usage); | |
f9b9faf6 | 652 | if (!opt.pattern_list) { |
aa8c79ad | 653 | add_pattern(&opt, arg, "command line", 0); |
1362671f JH |
654 | break; |
655 | } | |
656 | else { | |
657 | /* We are looking at the first path or rev; | |
658 | * it is found at argv[0] after leaving the | |
659 | * loop. | |
660 | */ | |
661 | argc++; argv--; | |
662 | break; | |
5010cb5f | 663 | } |
5010cb5f | 664 | } |
f9b9faf6 | 665 | if (!opt.pattern_list) |
5010cb5f | 666 | die("no pattern given."); |
f9b9faf6 | 667 | compile_patterns(&opt); |
1362671f JH |
668 | tail = &object_list; |
669 | while (1 < argc) { | |
670 | struct object *object; | |
671 | struct object_list *elem; | |
672 | const char *arg = argv[1]; | |
673 | unsigned char sha1[20]; | |
674 | if (get_sha1(arg, sha1) < 0) | |
675 | break; | |
676 | object = parse_object(sha1); | |
677 | if (!object) | |
678 | die("bad object %s", arg); | |
679 | elem = object_list_insert(object, tail); | |
680 | elem->name = arg; | |
681 | tail = &elem->next; | |
682 | argc--; argv++; | |
683 | } | |
684 | if (1 < argc) | |
685 | paths = get_pathspec(prefix, argv + 1); | |
686 | else if (prefix) { | |
687 | paths = xcalloc(2, sizeof(const char *)); | |
688 | paths[0] = prefix; | |
689 | paths[1] = NULL; | |
690 | } | |
5010cb5f | 691 | |
1362671f JH |
692 | if (!object_list) |
693 | return !grep_cache(&opt, paths, cached); | |
aa8c79ad | 694 | |
5010cb5f | 695 | if (cached) |
aa8c79ad | 696 | die("both --cached and trees are given."); |
5010cb5f | 697 | |
1362671f | 698 | for (list = object_list; list; list = list->next) { |
5010cb5f JH |
699 | struct object *real_obj; |
700 | real_obj = deref_tag(list->item, NULL, 0); | |
1362671f | 701 | if (grep_object(&opt, paths, real_obj, list->name)) |
5010cb5f JH |
702 | hit = 1; |
703 | } | |
704 | return !hit; | |
705 | } |