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Commit | Line | Data |
---|---|---|
453ec4bd LT |
1 | /* |
2 | * This handles recursive filename detection with exclude | |
3 | * files, index knowledge etc.. | |
4 | * | |
5 | * Copyright (C) Linus Torvalds, 2005-2006 | |
6 | * Junio Hamano, 2005-2006 | |
7 | */ | |
453ec4bd LT |
8 | #include "cache.h" |
9 | #include "dir.h" | |
09595258 | 10 | #include "refs.h" |
453ec4bd | 11 | |
9fc42d60 LT |
12 | struct path_simplify { |
13 | int len; | |
14 | const char *path; | |
15 | }; | |
16 | ||
09595258 LT |
17 | static int read_directory_recursive(struct dir_struct *dir, |
18 | const char *path, const char *base, int baselen, | |
19 | int check_only, const struct path_simplify *simplify); | |
20 | ||
3c6a370b LT |
21 | int common_prefix(const char **pathspec) |
22 | { | |
23 | const char *path, *slash, *next; | |
24 | int prefix; | |
25 | ||
26 | if (!pathspec) | |
27 | return 0; | |
28 | ||
29 | path = *pathspec; | |
30 | slash = strrchr(path, '/'); | |
31 | if (!slash) | |
32 | return 0; | |
33 | ||
34 | prefix = slash - path + 1; | |
35 | while ((next = *++pathspec) != NULL) { | |
36 | int len = strlen(next); | |
c7f34c18 | 37 | if (len >= prefix && !memcmp(path, next, prefix)) |
3c6a370b | 38 | continue; |
c7f34c18 | 39 | len = prefix - 1; |
3c6a370b LT |
40 | for (;;) { |
41 | if (!len) | |
42 | return 0; | |
43 | if (next[--len] != '/') | |
44 | continue; | |
45 | if (memcmp(path, next, len+1)) | |
46 | continue; | |
47 | prefix = len + 1; | |
48 | break; | |
49 | } | |
50 | } | |
51 | return prefix; | |
52 | } | |
53 | ||
e813d50e JH |
54 | /* |
55 | * Does 'match' matches the given name? | |
56 | * A match is found if | |
57 | * | |
58 | * (1) the 'match' string is leading directory of 'name', or | |
59 | * (2) the 'match' string is a wildcard and matches 'name', or | |
60 | * (3) the 'match' string is exactly the same as 'name'. | |
61 | * | |
62 | * and the return value tells which case it was. | |
63 | * | |
64 | * It returns 0 when there is no match. | |
65 | */ | |
3c6a370b LT |
66 | static int match_one(const char *match, const char *name, int namelen) |
67 | { | |
68 | int matchlen; | |
69 | ||
70 | /* If the match was just the prefix, we matched */ | |
71 | matchlen = strlen(match); | |
72 | if (!matchlen) | |
e813d50e | 73 | return MATCHED_RECURSIVELY; |
3c6a370b LT |
74 | |
75 | /* | |
76 | * If we don't match the matchstring exactly, | |
77 | * we need to match by fnmatch | |
78 | */ | |
79 | if (strncmp(match, name, matchlen)) | |
e813d50e | 80 | return !fnmatch(match, name, 0) ? MATCHED_FNMATCH : 0; |
3c6a370b | 81 | |
e813d50e JH |
82 | if (!name[matchlen]) |
83 | return MATCHED_EXACTLY; | |
84 | if (match[matchlen-1] == '/' || name[matchlen] == '/') | |
85 | return MATCHED_RECURSIVELY; | |
86 | return 0; | |
3c6a370b LT |
87 | } |
88 | ||
e813d50e JH |
89 | /* |
90 | * Given a name and a list of pathspecs, see if the name matches | |
91 | * any of the pathspecs. The caller is also interested in seeing | |
92 | * all pathspec matches some names it calls this function with | |
93 | * (otherwise the user could have mistyped the unmatched pathspec), | |
94 | * and a mark is left in seen[] array for pathspec element that | |
95 | * actually matched anything. | |
96 | */ | |
3c6a370b LT |
97 | int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen) |
98 | { | |
99 | int retval; | |
100 | const char *match; | |
101 | ||
102 | name += prefix; | |
103 | namelen -= prefix; | |
104 | ||
105 | for (retval = 0; (match = *pathspec++) != NULL; seen++) { | |
e813d50e JH |
106 | int how; |
107 | if (retval && *seen == MATCHED_EXACTLY) | |
3c6a370b LT |
108 | continue; |
109 | match += prefix; | |
e813d50e JH |
110 | how = match_one(match, name, namelen); |
111 | if (how) { | |
112 | if (retval < how) | |
113 | retval = how; | |
114 | if (*seen < how) | |
115 | *seen = how; | |
3c6a370b LT |
116 | } |
117 | } | |
118 | return retval; | |
119 | } | |
120 | ||
68492fc7 LK |
121 | static int no_wildcard(const char *string) |
122 | { | |
123 | return string[strcspn(string, "*?[{")] == '\0'; | |
124 | } | |
125 | ||
453ec4bd LT |
126 | void add_exclude(const char *string, const char *base, |
127 | int baselen, struct exclude_list *which) | |
128 | { | |
129 | struct exclude *x = xmalloc(sizeof (*x)); | |
130 | ||
68492fc7 LK |
131 | x->to_exclude = 1; |
132 | if (*string == '!') { | |
133 | x->to_exclude = 0; | |
134 | string++; | |
135 | } | |
453ec4bd | 136 | x->pattern = string; |
68492fc7 | 137 | x->patternlen = strlen(string); |
453ec4bd LT |
138 | x->base = base; |
139 | x->baselen = baselen; | |
68492fc7 LK |
140 | x->flags = 0; |
141 | if (!strchr(string, '/')) | |
142 | x->flags |= EXC_FLAG_NODIR; | |
143 | if (no_wildcard(string)) | |
144 | x->flags |= EXC_FLAG_NOWILDCARD; | |
145 | if (*string == '*' && no_wildcard(string+1)) | |
146 | x->flags |= EXC_FLAG_ENDSWITH; | |
453ec4bd LT |
147 | if (which->nr == which->alloc) { |
148 | which->alloc = alloc_nr(which->alloc); | |
83572c1a JF |
149 | which->excludes = xrealloc(which->excludes, |
150 | which->alloc * sizeof(x)); | |
453ec4bd LT |
151 | } |
152 | which->excludes[which->nr++] = x; | |
153 | } | |
154 | ||
155 | static int add_excludes_from_file_1(const char *fname, | |
156 | const char *base, | |
157 | int baselen, | |
158 | struct exclude_list *which) | |
159 | { | |
c470701a | 160 | struct stat st; |
453ec4bd | 161 | int fd, i; |
dc49cd76 | 162 | size_t size; |
453ec4bd LT |
163 | char *buf, *entry; |
164 | ||
165 | fd = open(fname, O_RDONLY); | |
c470701a | 166 | if (fd < 0 || fstat(fd, &st) < 0) |
453ec4bd | 167 | goto err; |
dc49cd76 | 168 | size = xsize_t(st.st_size); |
453ec4bd LT |
169 | if (size == 0) { |
170 | close(fd); | |
171 | return 0; | |
172 | } | |
173 | buf = xmalloc(size+1); | |
93d26e4c | 174 | if (read_in_full(fd, buf, size) != size) |
453ec4bd LT |
175 | goto err; |
176 | close(fd); | |
177 | ||
178 | buf[size++] = '\n'; | |
179 | entry = buf; | |
180 | for (i = 0; i < size; i++) { | |
181 | if (buf[i] == '\n') { | |
182 | if (entry != buf + i && entry[0] != '#') { | |
183 | buf[i - (i && buf[i-1] == '\r')] = 0; | |
184 | add_exclude(entry, base, baselen, which); | |
185 | } | |
186 | entry = buf + i + 1; | |
187 | } | |
188 | } | |
189 | return 0; | |
190 | ||
191 | err: | |
192 | if (0 <= fd) | |
193 | close(fd); | |
194 | return -1; | |
195 | } | |
196 | ||
197 | void add_excludes_from_file(struct dir_struct *dir, const char *fname) | |
198 | { | |
199 | if (add_excludes_from_file_1(fname, "", 0, | |
200 | &dir->exclude_list[EXC_FILE]) < 0) | |
201 | die("cannot use %s as an exclude file", fname); | |
202 | } | |
203 | ||
f8a9d428 | 204 | int push_exclude_per_directory(struct dir_struct *dir, const char *base, int baselen) |
453ec4bd LT |
205 | { |
206 | char exclude_file[PATH_MAX]; | |
207 | struct exclude_list *el = &dir->exclude_list[EXC_DIRS]; | |
208 | int current_nr = el->nr; | |
209 | ||
210 | if (dir->exclude_per_dir) { | |
211 | memcpy(exclude_file, base, baselen); | |
212 | strcpy(exclude_file + baselen, dir->exclude_per_dir); | |
213 | add_excludes_from_file_1(exclude_file, base, baselen, el); | |
214 | } | |
215 | return current_nr; | |
216 | } | |
217 | ||
f8a9d428 | 218 | void pop_exclude_per_directory(struct dir_struct *dir, int stk) |
453ec4bd LT |
219 | { |
220 | struct exclude_list *el = &dir->exclude_list[EXC_DIRS]; | |
221 | ||
222 | while (stk < el->nr) | |
223 | free(el->excludes[--el->nr]); | |
224 | } | |
225 | ||
226 | /* Scan the list and let the last match determines the fate. | |
227 | * Return 1 for exclude, 0 for include and -1 for undecided. | |
228 | */ | |
229 | static int excluded_1(const char *pathname, | |
68492fc7 | 230 | int pathlen, const char *basename, |
453ec4bd LT |
231 | struct exclude_list *el) |
232 | { | |
233 | int i; | |
234 | ||
235 | if (el->nr) { | |
236 | for (i = el->nr - 1; 0 <= i; i--) { | |
237 | struct exclude *x = el->excludes[i]; | |
238 | const char *exclude = x->pattern; | |
68492fc7 | 239 | int to_exclude = x->to_exclude; |
453ec4bd | 240 | |
68492fc7 | 241 | if (x->flags & EXC_FLAG_NODIR) { |
453ec4bd | 242 | /* match basename */ |
68492fc7 LK |
243 | if (x->flags & EXC_FLAG_NOWILDCARD) { |
244 | if (!strcmp(exclude, basename)) | |
245 | return to_exclude; | |
246 | } else if (x->flags & EXC_FLAG_ENDSWITH) { | |
247 | if (x->patternlen - 1 <= pathlen && | |
248 | !strcmp(exclude + 1, pathname + pathlen - x->patternlen + 1)) | |
249 | return to_exclude; | |
250 | } else { | |
251 | if (fnmatch(exclude, basename, 0) == 0) | |
252 | return to_exclude; | |
253 | } | |
453ec4bd LT |
254 | } |
255 | else { | |
256 | /* match with FNM_PATHNAME: | |
257 | * exclude has base (baselen long) implicitly | |
258 | * in front of it. | |
259 | */ | |
260 | int baselen = x->baselen; | |
261 | if (*exclude == '/') | |
262 | exclude++; | |
263 | ||
264 | if (pathlen < baselen || | |
265 | (baselen && pathname[baselen-1] != '/') || | |
266 | strncmp(pathname, x->base, baselen)) | |
267 | continue; | |
268 | ||
68492fc7 LK |
269 | if (x->flags & EXC_FLAG_NOWILDCARD) { |
270 | if (!strcmp(exclude, pathname + baselen)) | |
271 | return to_exclude; | |
272 | } else { | |
273 | if (fnmatch(exclude, pathname+baselen, | |
274 | FNM_PATHNAME) == 0) | |
275 | return to_exclude; | |
276 | } | |
453ec4bd LT |
277 | } |
278 | } | |
279 | } | |
280 | return -1; /* undecided */ | |
281 | } | |
282 | ||
283 | int excluded(struct dir_struct *dir, const char *pathname) | |
284 | { | |
285 | int pathlen = strlen(pathname); | |
286 | int st; | |
68492fc7 LK |
287 | const char *basename = strrchr(pathname, '/'); |
288 | basename = (basename) ? basename+1 : pathname; | |
453ec4bd LT |
289 | |
290 | for (st = EXC_CMDL; st <= EXC_FILE; st++) { | |
68492fc7 | 291 | switch (excluded_1(pathname, pathlen, basename, &dir->exclude_list[st])) { |
453ec4bd LT |
292 | case 0: |
293 | return 0; | |
294 | case 1: | |
295 | return 1; | |
296 | } | |
297 | } | |
298 | return 0; | |
299 | } | |
300 | ||
6815e569 | 301 | static struct dir_entry *dir_entry_new(const char *pathname, int len) { |
453ec4bd LT |
302 | struct dir_entry *ent; |
303 | ||
453ec4bd LT |
304 | ent = xmalloc(sizeof(*ent) + len + 1); |
305 | ent->len = len; | |
306 | memcpy(ent->name, pathname, len); | |
307 | ent->name[len] = 0; | |
4d06f8ac | 308 | return ent; |
453ec4bd LT |
309 | } |
310 | ||
6815e569 JK |
311 | struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len) |
312 | { | |
313 | if (cache_name_pos(pathname, len) >= 0) | |
314 | return NULL; | |
315 | ||
25fd2f7a | 316 | ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc); |
6815e569 JK |
317 | return dir->entries[dir->nr++] = dir_entry_new(pathname, len); |
318 | } | |
319 | ||
2abd31b0 JK |
320 | struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len) |
321 | { | |
322 | if (cache_name_pos(pathname, len) >= 0) | |
323 | return NULL; | |
324 | ||
25fd2f7a | 325 | ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc); |
2abd31b0 JK |
326 | return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len); |
327 | } | |
328 | ||
09595258 LT |
329 | enum exist_status { |
330 | index_nonexistent = 0, | |
331 | index_directory, | |
332 | index_gitdir, | |
333 | }; | |
334 | ||
335 | /* | |
336 | * The index sorts alphabetically by entry name, which | |
337 | * means that a gitlink sorts as '\0' at the end, while | |
338 | * a directory (which is defined not as an entry, but as | |
339 | * the files it contains) will sort with the '/' at the | |
340 | * end. | |
341 | */ | |
342 | static enum exist_status directory_exists_in_index(const char *dirname, int len) | |
453ec4bd LT |
343 | { |
344 | int pos = cache_name_pos(dirname, len); | |
09595258 LT |
345 | if (pos < 0) |
346 | pos = -pos-1; | |
347 | while (pos < active_nr) { | |
348 | struct cache_entry *ce = active_cache[pos++]; | |
349 | unsigned char endchar; | |
350 | ||
351 | if (strncmp(ce->name, dirname, len)) | |
352 | break; | |
353 | endchar = ce->name[len]; | |
354 | if (endchar > '/') | |
355 | break; | |
356 | if (endchar == '/') | |
357 | return index_directory; | |
302b9282 | 358 | if (!endchar && S_ISGITLINK(ntohl(ce->ce_mode))) |
09595258 LT |
359 | return index_gitdir; |
360 | } | |
361 | return index_nonexistent; | |
362 | } | |
363 | ||
364 | /* | |
365 | * When we find a directory when traversing the filesystem, we | |
366 | * have three distinct cases: | |
367 | * | |
368 | * - ignore it | |
369 | * - see it as a directory | |
370 | * - recurse into it | |
371 | * | |
372 | * and which one we choose depends on a combination of existing | |
373 | * git index contents and the flags passed into the directory | |
374 | * traversal routine. | |
375 | * | |
376 | * Case 1: If we *already* have entries in the index under that | |
377 | * directory name, we always recurse into the directory to see | |
378 | * all the files. | |
379 | * | |
380 | * Case 2: If we *already* have that directory name as a gitlink, | |
381 | * we always continue to see it as a gitlink, regardless of whether | |
382 | * there is an actual git directory there or not (it might not | |
383 | * be checked out as a subproject!) | |
384 | * | |
385 | * Case 3: if we didn't have it in the index previously, we | |
386 | * have a few sub-cases: | |
387 | * | |
388 | * (a) if "show_other_directories" is true, we show it as | |
389 | * just a directory, unless "hide_empty_directories" is | |
390 | * also true and the directory is empty, in which case | |
391 | * we just ignore it entirely. | |
392 | * (b) if it looks like a git directory, and we don't have | |
302b9282 | 393 | * 'no_gitlinks' set we treat it as a gitlink, and show it |
09595258 LT |
394 | * as a directory. |
395 | * (c) otherwise, we recurse into it. | |
396 | */ | |
397 | enum directory_treatment { | |
398 | show_directory, | |
399 | ignore_directory, | |
400 | recurse_into_directory, | |
401 | }; | |
402 | ||
403 | static enum directory_treatment treat_directory(struct dir_struct *dir, | |
404 | const char *dirname, int len, | |
405 | const struct path_simplify *simplify) | |
406 | { | |
407 | /* The "len-1" is to strip the final '/' */ | |
408 | switch (directory_exists_in_index(dirname, len-1)) { | |
409 | case index_directory: | |
410 | return recurse_into_directory; | |
411 | ||
412 | case index_gitdir: | |
ab22aed3 LT |
413 | if (dir->show_other_directories) |
414 | return ignore_directory; | |
09595258 LT |
415 | return show_directory; |
416 | ||
417 | case index_nonexistent: | |
418 | if (dir->show_other_directories) | |
419 | break; | |
302b9282 | 420 | if (!dir->no_gitlinks) { |
09595258 LT |
421 | unsigned char sha1[20]; |
422 | if (resolve_gitlink_ref(dirname, "HEAD", sha1) == 0) | |
423 | return show_directory; | |
424 | } | |
425 | return recurse_into_directory; | |
426 | } | |
427 | ||
428 | /* This is the "show_other_directories" case */ | |
429 | if (!dir->hide_empty_directories) | |
430 | return show_directory; | |
431 | if (!read_directory_recursive(dir, dirname, dirname, len, 1, simplify)) | |
432 | return ignore_directory; | |
433 | return show_directory; | |
453ec4bd LT |
434 | } |
435 | ||
9fc42d60 LT |
436 | /* |
437 | * This is an inexact early pruning of any recursive directory | |
438 | * reading - if the path cannot possibly be in the pathspec, | |
439 | * return true, and we'll skip it early. | |
440 | */ | |
441 | static int simplify_away(const char *path, int pathlen, const struct path_simplify *simplify) | |
442 | { | |
443 | if (simplify) { | |
444 | for (;;) { | |
445 | const char *match = simplify->path; | |
446 | int len = simplify->len; | |
447 | ||
448 | if (!match) | |
449 | break; | |
450 | if (len > pathlen) | |
451 | len = pathlen; | |
452 | if (!memcmp(path, match, len)) | |
453 | return 0; | |
454 | simplify++; | |
455 | } | |
456 | return 1; | |
457 | } | |
458 | return 0; | |
459 | } | |
460 | ||
e96980ef JK |
461 | static int in_pathspec(const char *path, int len, const struct path_simplify *simplify) |
462 | { | |
463 | if (simplify) { | |
464 | for (; simplify->path; simplify++) { | |
465 | if (len == simplify->len | |
466 | && !memcmp(path, simplify->path, len)) | |
467 | return 1; | |
468 | } | |
469 | } | |
470 | return 0; | |
471 | } | |
472 | ||
07134421 LT |
473 | static int get_dtype(struct dirent *de, const char *path) |
474 | { | |
475 | int dtype = DTYPE(de); | |
476 | struct stat st; | |
477 | ||
478 | if (dtype != DT_UNKNOWN) | |
479 | return dtype; | |
480 | if (lstat(path, &st)) | |
481 | return dtype; | |
482 | if (S_ISREG(st.st_mode)) | |
483 | return DT_REG; | |
484 | if (S_ISDIR(st.st_mode)) | |
485 | return DT_DIR; | |
486 | if (S_ISLNK(st.st_mode)) | |
487 | return DT_LNK; | |
488 | return dtype; | |
489 | } | |
490 | ||
453ec4bd LT |
491 | /* |
492 | * Read a directory tree. We currently ignore anything but | |
493 | * directories, regular files and symlinks. That's because git | |
494 | * doesn't handle them at all yet. Maybe that will change some | |
495 | * day. | |
496 | * | |
497 | * Also, we ignore the name ".git" (even if it is not a directory). | |
498 | * That likely will not change. | |
499 | */ | |
9fc42d60 | 500 | static int read_directory_recursive(struct dir_struct *dir, const char *path, const char *base, int baselen, int check_only, const struct path_simplify *simplify) |
453ec4bd LT |
501 | { |
502 | DIR *fdir = opendir(path); | |
503 | int contents = 0; | |
504 | ||
505 | if (fdir) { | |
506 | int exclude_stk; | |
507 | struct dirent *de; | |
095c424d | 508 | char fullname[PATH_MAX + 1]; |
453ec4bd LT |
509 | memcpy(fullname, base, baselen); |
510 | ||
511 | exclude_stk = push_exclude_per_directory(dir, base, baselen); | |
512 | ||
513 | while ((de = readdir(fdir)) != NULL) { | |
07134421 | 514 | int len, dtype; |
b9916256 | 515 | int exclude; |
453ec4bd LT |
516 | |
517 | if ((de->d_name[0] == '.') && | |
518 | (de->d_name[1] == 0 || | |
519 | !strcmp(de->d_name + 1, ".") || | |
520 | !strcmp(de->d_name + 1, "git"))) | |
521 | continue; | |
522 | len = strlen(de->d_name); | |
5d5cea67 LT |
523 | /* Ignore overly long pathnames! */ |
524 | if (len + baselen + 8 > sizeof(fullname)) | |
525 | continue; | |
453ec4bd | 526 | memcpy(fullname + baselen, de->d_name, len+1); |
9fc42d60 LT |
527 | if (simplify_away(fullname, baselen + len, simplify)) |
528 | continue; | |
b9916256 MS |
529 | |
530 | exclude = excluded(dir, fullname); | |
e96980ef JK |
531 | if (exclude && dir->collect_ignored |
532 | && in_pathspec(fullname, baselen + len, simplify)) | |
2abd31b0 | 533 | dir_add_ignored(dir, fullname, baselen + len); |
07134421 LT |
534 | |
535 | /* | |
536 | * Excluded? If we don't explicitly want to show | |
537 | * ignored files, ignore it | |
538 | */ | |
539 | if (exclude && !dir->show_ignored) | |
540 | continue; | |
541 | ||
542 | dtype = get_dtype(de, fullname); | |
543 | ||
544 | /* | |
545 | * Do we want to see just the ignored files? | |
546 | * We still need to recurse into directories, | |
547 | * even if we don't ignore them, since the | |
548 | * directory may contain files that we do.. | |
549 | */ | |
550 | if (!exclude && dir->show_ignored) { | |
551 | if (dtype != DT_DIR) | |
c889763b | 552 | continue; |
c889763b | 553 | } |
453ec4bd | 554 | |
07134421 | 555 | switch (dtype) { |
453ec4bd LT |
556 | default: |
557 | continue; | |
453ec4bd LT |
558 | case DT_DIR: |
559 | memcpy(fullname + baselen + len, "/", 2); | |
560 | len++; | |
09595258 LT |
561 | switch (treat_directory(dir, fullname, baselen + len, simplify)) { |
562 | case show_directory: | |
b9916256 MS |
563 | if (exclude != dir->show_ignored) |
564 | continue; | |
453ec4bd | 565 | break; |
09595258 LT |
566 | case recurse_into_directory: |
567 | contents += read_directory_recursive(dir, | |
568 | fullname, fullname, baselen + len, 0, simplify); | |
569 | continue; | |
570 | case ignore_directory: | |
571 | continue; | |
453ec4bd | 572 | } |
09595258 | 573 | break; |
453ec4bd LT |
574 | case DT_REG: |
575 | case DT_LNK: | |
576 | break; | |
577 | } | |
453ec4bd | 578 | contents++; |
07ccbff8 JS |
579 | if (check_only) |
580 | goto exit_early; | |
581 | else | |
4d06f8ac | 582 | dir_add_name(dir, fullname, baselen + len); |
453ec4bd | 583 | } |
07ccbff8 | 584 | exit_early: |
453ec4bd LT |
585 | closedir(fdir); |
586 | ||
587 | pop_exclude_per_directory(dir, exclude_stk); | |
588 | } | |
589 | ||
590 | return contents; | |
591 | } | |
592 | ||
593 | static int cmp_name(const void *p1, const void *p2) | |
594 | { | |
595 | const struct dir_entry *e1 = *(const struct dir_entry **)p1; | |
596 | const struct dir_entry *e2 = *(const struct dir_entry **)p2; | |
597 | ||
598 | return cache_name_compare(e1->name, e1->len, | |
599 | e2->name, e2->len); | |
600 | } | |
601 | ||
9fc42d60 LT |
602 | /* |
603 | * Return the length of the "simple" part of a path match limiter. | |
604 | */ | |
605 | static int simple_length(const char *match) | |
453ec4bd | 606 | { |
9fc42d60 LT |
607 | const char special[256] = { |
608 | [0] = 1, ['?'] = 1, | |
609 | ['\\'] = 1, ['*'] = 1, | |
610 | ['['] = 1 | |
611 | }; | |
612 | int len = -1; | |
613 | ||
614 | for (;;) { | |
615 | unsigned char c = *match++; | |
616 | len++; | |
617 | if (special[c]) | |
618 | return len; | |
619 | } | |
620 | } | |
621 | ||
622 | static struct path_simplify *create_simplify(const char **pathspec) | |
623 | { | |
624 | int nr, alloc = 0; | |
625 | struct path_simplify *simplify = NULL; | |
626 | ||
627 | if (!pathspec) | |
628 | return NULL; | |
629 | ||
630 | for (nr = 0 ; ; nr++) { | |
631 | const char *match; | |
632 | if (nr >= alloc) { | |
633 | alloc = alloc_nr(alloc); | |
634 | simplify = xrealloc(simplify, alloc * sizeof(*simplify)); | |
635 | } | |
636 | match = *pathspec++; | |
637 | if (!match) | |
638 | break; | |
639 | simplify[nr].path = match; | |
640 | simplify[nr].len = simple_length(match); | |
641 | } | |
642 | simplify[nr].path = NULL; | |
643 | simplify[nr].len = 0; | |
644 | return simplify; | |
645 | } | |
646 | ||
647 | static void free_simplify(struct path_simplify *simplify) | |
648 | { | |
649 | if (simplify) | |
650 | free(simplify); | |
651 | } | |
652 | ||
653 | int read_directory(struct dir_struct *dir, const char *path, const char *base, int baselen, const char **pathspec) | |
654 | { | |
655 | struct path_simplify *simplify = create_simplify(pathspec); | |
656 | ||
b4189aa8 LT |
657 | /* |
658 | * Make sure to do the per-directory exclude for all the | |
659 | * directories leading up to our base. | |
660 | */ | |
661 | if (baselen) { | |
662 | if (dir->exclude_per_dir) { | |
663 | char *p, *pp = xmalloc(baselen+1); | |
664 | memcpy(pp, base, baselen+1); | |
665 | p = pp; | |
666 | while (1) { | |
667 | char save = *p; | |
668 | *p = 0; | |
669 | push_exclude_per_directory(dir, pp, p-pp); | |
670 | *p++ = save; | |
671 | if (!save) | |
672 | break; | |
673 | p = strchr(p, '/'); | |
674 | if (p) | |
675 | p++; | |
676 | else | |
677 | p = pp + baselen; | |
678 | } | |
679 | free(pp); | |
680 | } | |
681 | } | |
682 | ||
9fc42d60 LT |
683 | read_directory_recursive(dir, path, base, baselen, 0, simplify); |
684 | free_simplify(simplify); | |
453ec4bd | 685 | qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name); |
2abd31b0 | 686 | qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name); |
453ec4bd LT |
687 | return dir->nr; |
688 | } | |
c91f0d92 JK |
689 | |
690 | int | |
691 | file_exists(const char *f) | |
692 | { | |
693 | struct stat sb; | |
694 | return stat(f, &sb) == 0; | |
695 | } | |
e6636747 JS |
696 | |
697 | /* | |
698 | * get_relative_cwd() gets the prefix of the current working directory | |
699 | * relative to 'dir'. If we are not inside 'dir', it returns NULL. | |
420acb31 JS |
700 | * |
701 | * As a convenience, it also returns NULL if 'dir' is already NULL. The | |
702 | * reason for this behaviour is that it is natural for functions returning | |
703 | * directory names to return NULL to say "this directory does not exist" | |
704 | * or "this directory is invalid". These cases are usually handled the | |
705 | * same as if the cwd is not inside 'dir' at all, so get_relative_cwd() | |
706 | * returns NULL for both of them. | |
707 | * | |
708 | * Most notably, get_relative_cwd(buffer, size, get_git_work_tree()) | |
709 | * unifies the handling of "outside work tree" with "no work tree at all". | |
e6636747 JS |
710 | */ |
711 | char *get_relative_cwd(char *buffer, int size, const char *dir) | |
712 | { | |
713 | char *cwd = buffer; | |
714 | ||
e6636747 JS |
715 | if (!dir) |
716 | return NULL; | |
717 | if (!getcwd(buffer, size)) | |
718 | die("can't find the current directory: %s", strerror(errno)); | |
719 | ||
720 | if (!is_absolute_path(dir)) | |
721 | dir = make_absolute_path(dir); | |
722 | ||
723 | while (*dir && *dir == *cwd) { | |
724 | dir++; | |
725 | cwd++; | |
726 | } | |
727 | if (*dir) | |
728 | return NULL; | |
729 | if (*cwd == '/') | |
730 | return cwd + 1; | |
731 | return cwd; | |
732 | } | |
733 | ||
734 | int is_inside_dir(const char *dir) | |
735 | { | |
736 | char buffer[PATH_MAX]; | |
737 | return get_relative_cwd(buffer, sizeof(buffer), dir) != NULL; | |
738 | } | |
7155b727 JS |
739 | |
740 | int remove_dir_recursively(struct strbuf *path, int only_empty) | |
741 | { | |
742 | DIR *dir = opendir(path->buf); | |
743 | struct dirent *e; | |
744 | int ret = 0, original_len = path->len, len; | |
745 | ||
746 | if (!dir) | |
747 | return -1; | |
748 | if (path->buf[original_len - 1] != '/') | |
749 | strbuf_addch(path, '/'); | |
750 | ||
751 | len = path->len; | |
752 | while ((e = readdir(dir)) != NULL) { | |
753 | struct stat st; | |
754 | if ((e->d_name[0] == '.') && | |
755 | ((e->d_name[1] == 0) || | |
756 | ((e->d_name[1] == '.') && e->d_name[2] == 0))) | |
757 | continue; /* "." and ".." */ | |
758 | ||
759 | strbuf_setlen(path, len); | |
760 | strbuf_addstr(path, e->d_name); | |
761 | if (lstat(path->buf, &st)) | |
762 | ; /* fall thru */ | |
763 | else if (S_ISDIR(st.st_mode)) { | |
764 | if (!remove_dir_recursively(path, only_empty)) | |
765 | continue; /* happy */ | |
766 | } else if (!only_empty && !unlink(path->buf)) | |
767 | continue; /* happy, too */ | |
768 | ||
769 | /* path too long, stat fails, or non-directory still exists */ | |
770 | ret = -1; | |
771 | break; | |
772 | } | |
773 | closedir(dir); | |
774 | ||
775 | strbuf_setlen(path, original_len); | |
776 | if (!ret) | |
777 | ret = rmdir(path->buf); | |
778 | return ret; | |
779 | } |