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Commit | Line | Data |
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453ec4bd LT |
1 | /* |
2 | * This handles recursive filename detection with exclude | |
3 | * files, index knowledge etc.. | |
4 | * | |
95a68344 AS |
5 | * See Documentation/technical/api-directory-listing.txt |
6 | * | |
453ec4bd LT |
7 | * Copyright (C) Linus Torvalds, 2005-2006 |
8 | * Junio Hamano, 2005-2006 | |
9 | */ | |
453ec4bd LT |
10 | #include "cache.h" |
11 | #include "dir.h" | |
09595258 | 12 | #include "refs.h" |
237ec6e4 | 13 | #include "wildmatch.h" |
64acde94 | 14 | #include "pathspec.h" |
453ec4bd | 15 | |
9fc42d60 LT |
16 | struct path_simplify { |
17 | int len; | |
18 | const char *path; | |
19 | }; | |
20 | ||
defd7c7b KB |
21 | /* |
22 | * Tells read_directory_recursive how a file or directory should be treated. | |
23 | * Values are ordered by significance, e.g. if a directory contains both | |
24 | * excluded and untracked files, it is listed as untracked because | |
25 | * path_untracked > path_excluded. | |
26 | */ | |
27 | enum path_treatment { | |
28 | path_none = 0, | |
29 | path_recurse, | |
30 | path_excluded, | |
31 | path_untracked | |
32 | }; | |
33 | ||
34 | static enum path_treatment read_directory_recursive(struct dir_struct *dir, | |
35 | const char *path, int len, | |
09595258 | 36 | int check_only, const struct path_simplify *simplify); |
caa6b782 | 37 | static int get_dtype(struct dirent *de, const char *path, int len); |
09595258 | 38 | |
8cf2a84e JJ |
39 | /* helper string functions with support for the ignore_case flag */ |
40 | int strcmp_icase(const char *a, const char *b) | |
41 | { | |
42 | return ignore_case ? strcasecmp(a, b) : strcmp(a, b); | |
43 | } | |
44 | ||
45 | int strncmp_icase(const char *a, const char *b, size_t count) | |
46 | { | |
47 | return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count); | |
48 | } | |
49 | ||
50 | int fnmatch_icase(const char *pattern, const char *string, int flags) | |
51 | { | |
52 | return fnmatch(pattern, string, flags | (ignore_case ? FNM_CASEFOLD : 0)); | |
53 | } | |
54 | ||
bd30c2e4 NTND |
55 | inline int git_fnmatch(const struct pathspec_item *item, |
56 | const char *pattern, const char *string, | |
57 | int prefix) | |
5d74762d | 58 | { |
5d74762d | 59 | if (prefix > 0) { |
93d93537 | 60 | if (ps_strncmp(item, pattern, string, prefix)) |
5d74762d NTND |
61 | return FNM_NOMATCH; |
62 | pattern += prefix; | |
63 | string += prefix; | |
64 | } | |
bd30c2e4 | 65 | if (item->flags & PATHSPEC_ONESTAR) { |
8c6abbcd NTND |
66 | int pattern_len = strlen(++pattern); |
67 | int string_len = strlen(string); | |
68 | return string_len < pattern_len || | |
93d93537 NTND |
69 | ps_strcmp(item, pattern, |
70 | string + string_len - pattern_len); | |
8c6abbcd | 71 | } |
bd30c2e4 | 72 | if (item->magic & PATHSPEC_GLOB) |
93d93537 NTND |
73 | return wildmatch(pattern, string, |
74 | WM_PATHNAME | | |
75 | (item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0), | |
76 | NULL); | |
bd30c2e4 NTND |
77 | else |
78 | /* wildmatch has not learned no FNM_PATHNAME mode yet */ | |
93d93537 NTND |
79 | return fnmatch(pattern, string, |
80 | item->magic & PATHSPEC_ICASE ? FNM_CASEFOLD : 0); | |
5d74762d NTND |
81 | } |
82 | ||
0b6e56df JH |
83 | static int fnmatch_icase_mem(const char *pattern, int patternlen, |
84 | const char *string, int stringlen, | |
85 | int flags) | |
86 | { | |
87 | int match_status; | |
88 | struct strbuf pat_buf = STRBUF_INIT; | |
89 | struct strbuf str_buf = STRBUF_INIT; | |
90 | const char *use_pat = pattern; | |
91 | const char *use_str = string; | |
92 | ||
93 | if (pattern[patternlen]) { | |
94 | strbuf_add(&pat_buf, pattern, patternlen); | |
95 | use_pat = pat_buf.buf; | |
96 | } | |
97 | if (string[stringlen]) { | |
98 | strbuf_add(&str_buf, string, stringlen); | |
99 | use_str = str_buf.buf; | |
100 | } | |
101 | ||
f30366b2 JH |
102 | if (ignore_case) |
103 | flags |= WM_CASEFOLD; | |
104 | match_status = wildmatch(use_pat, use_str, flags, NULL); | |
0b6e56df JH |
105 | |
106 | strbuf_release(&pat_buf); | |
107 | strbuf_release(&str_buf); | |
108 | ||
109 | return match_status; | |
110 | } | |
111 | ||
827f4d6c | 112 | static size_t common_prefix_len(const struct pathspec *pathspec) |
3c6a370b | 113 | { |
827f4d6c | 114 | int n; |
4a085b16 | 115 | size_t max = 0; |
3c6a370b | 116 | |
93d93537 NTND |
117 | /* |
118 | * ":(icase)path" is treated as a pathspec full of | |
119 | * wildcard. In other words, only prefix is considered common | |
120 | * prefix. If the pathspec is abc/foo abc/bar, running in | |
121 | * subdir xyz, the common prefix is still xyz, not xuz/abc as | |
122 | * in non-:(icase). | |
123 | */ | |
5c6933d2 NTND |
124 | GUARD_PATHSPEC(pathspec, |
125 | PATHSPEC_FROMTOP | | |
126 | PATHSPEC_MAXDEPTH | | |
bd30c2e4 | 127 | PATHSPEC_LITERAL | |
93d93537 NTND |
128 | PATHSPEC_GLOB | |
129 | PATHSPEC_ICASE); | |
4a085b16 | 130 | |
827f4d6c | 131 | for (n = 0; n < pathspec->nr; n++) { |
93d93537 NTND |
132 | size_t i = 0, len = 0, item_len; |
133 | if (pathspec->items[n].magic & PATHSPEC_ICASE) | |
134 | item_len = pathspec->items[n].prefix; | |
135 | else | |
136 | item_len = pathspec->items[n].nowildcard_len; | |
137 | while (i < item_len && (n == 0 || i < max)) { | |
827f4d6c NTND |
138 | char c = pathspec->items[n].match[i]; |
139 | if (c != pathspec->items[0].match[i]) | |
4a085b16 JH |
140 | break; |
141 | if (c == '/') | |
142 | len = i + 1; | |
827f4d6c | 143 | i++; |
4a085b16 | 144 | } |
827f4d6c | 145 | if (n == 0 || len < max) { |
4a085b16 JH |
146 | max = len; |
147 | if (!max) | |
148 | break; | |
149 | } | |
3c6a370b | 150 | } |
4a085b16 | 151 | return max; |
3c6a370b LT |
152 | } |
153 | ||
f950eb95 CB |
154 | /* |
155 | * Returns a copy of the longest leading path common among all | |
156 | * pathspecs. | |
157 | */ | |
827f4d6c | 158 | char *common_prefix(const struct pathspec *pathspec) |
f950eb95 CB |
159 | { |
160 | unsigned long len = common_prefix_len(pathspec); | |
161 | ||
827f4d6c | 162 | return len ? xmemdupz(pathspec->items[0].match, len) : NULL; |
f950eb95 CB |
163 | } |
164 | ||
7327d3d1 | 165 | int fill_directory(struct dir_struct *dir, const struct pathspec *pathspec) |
1d8842d9 | 166 | { |
4a085b16 | 167 | size_t len; |
1d8842d9 LT |
168 | |
169 | /* | |
170 | * Calculate common prefix for the pathspec, and | |
171 | * use that to optimize the directory walk | |
172 | */ | |
4a085b16 | 173 | len = common_prefix_len(pathspec); |
1d8842d9 LT |
174 | |
175 | /* Read the directory and prune it */ | |
b3920bbd | 176 | read_directory(dir, pathspec->nr ? pathspec->_raw[0] : "", len, pathspec); |
dba2e203 | 177 | return len; |
1d8842d9 LT |
178 | } |
179 | ||
bc96cc87 NTND |
180 | int within_depth(const char *name, int namelen, |
181 | int depth, int max_depth) | |
182 | { | |
183 | const char *cp = name, *cpe = name + namelen; | |
184 | ||
185 | while (cp < cpe) { | |
186 | if (*cp++ != '/') | |
187 | continue; | |
188 | depth++; | |
189 | if (depth > max_depth) | |
190 | return 0; | |
191 | } | |
192 | return 1; | |
193 | } | |
194 | ||
61cf2820 NTND |
195 | /* |
196 | * Does 'match' match the given name? | |
197 | * A match is found if | |
198 | * | |
199 | * (1) the 'match' string is leading directory of 'name', or | |
200 | * (2) the 'match' string is a wildcard and matches 'name', or | |
201 | * (3) the 'match' string is exactly the same as 'name'. | |
202 | * | |
203 | * and the return value tells which case it was. | |
204 | * | |
205 | * It returns 0 when there is no match. | |
206 | */ | |
207 | static int match_pathspec_item(const struct pathspec_item *item, int prefix, | |
208 | const char *name, int namelen) | |
209 | { | |
210 | /* name/namelen has prefix cut off by caller */ | |
211 | const char *match = item->match + prefix; | |
212 | int matchlen = item->len - prefix; | |
213 | ||
93d93537 NTND |
214 | /* |
215 | * The normal call pattern is: | |
216 | * 1. prefix = common_prefix_len(ps); | |
217 | * 2. prune something, or fill_directory | |
218 | * 3. match_pathspec_depth() | |
219 | * | |
220 | * 'prefix' at #1 may be shorter than the command's prefix and | |
221 | * it's ok for #2 to match extra files. Those extras will be | |
222 | * trimmed at #3. | |
223 | * | |
224 | * Suppose the pathspec is 'foo' and '../bar' running from | |
225 | * subdir 'xyz'. The common prefix at #1 will be empty, thanks | |
226 | * to "../". We may have xyz/foo _and_ XYZ/foo after #2. The | |
227 | * user does not want XYZ/foo, only the "foo" part should be | |
228 | * case-insensitive. We need to filter out XYZ/foo here. In | |
229 | * other words, we do not trust the caller on comparing the | |
230 | * prefix part when :(icase) is involved. We do exact | |
231 | * comparison ourselves. | |
232 | * | |
233 | * Normally the caller (common_prefix_len() in fact) does | |
234 | * _exact_ matching on name[-prefix+1..-1] and we do not need | |
235 | * to check that part. Be defensive and check it anyway, in | |
236 | * case common_prefix_len is changed, or a new caller is | |
237 | * introduced that does not use common_prefix_len. | |
238 | * | |
239 | * If the penalty turns out too high when prefix is really | |
240 | * long, maybe change it to | |
241 | * strncmp(match, name, item->prefix - prefix) | |
242 | */ | |
243 | if (item->prefix && (item->magic & PATHSPEC_ICASE) && | |
244 | strncmp(item->match, name - prefix, item->prefix)) | |
245 | return 0; | |
246 | ||
61cf2820 NTND |
247 | /* If the match was just the prefix, we matched */ |
248 | if (!*match) | |
249 | return MATCHED_RECURSIVELY; | |
250 | ||
93d93537 | 251 | if (matchlen <= namelen && !ps_strncmp(item, match, name, matchlen)) { |
61cf2820 NTND |
252 | if (matchlen == namelen) |
253 | return MATCHED_EXACTLY; | |
254 | ||
255 | if (match[matchlen-1] == '/' || name[matchlen] == '/') | |
256 | return MATCHED_RECURSIVELY; | |
257 | } | |
258 | ||
5d74762d | 259 | if (item->nowildcard_len < item->len && |
bd30c2e4 | 260 | !git_fnmatch(item, match, name, |
8c6abbcd | 261 | item->nowildcard_len - prefix)) |
61cf2820 NTND |
262 | return MATCHED_FNMATCH; |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
267 | /* | |
52ed1894 AS |
268 | * Given a name and a list of pathspecs, returns the nature of the |
269 | * closest (i.e. most specific) match of the name to any of the | |
270 | * pathspecs. | |
271 | * | |
272 | * The caller typically calls this multiple times with the same | |
273 | * pathspec and seen[] array but with different name/namelen | |
274 | * (e.g. entries from the index) and is interested in seeing if and | |
275 | * how each pathspec matches all the names it calls this function | |
276 | * with. A mark is left in the seen[] array for each pathspec element | |
277 | * indicating the closest type of match that element achieved, so if | |
278 | * seen[n] remains zero after multiple invocations, that means the nth | |
279 | * pathspec did not match any names, which could indicate that the | |
280 | * user mistyped the nth pathspec. | |
61cf2820 NTND |
281 | */ |
282 | int match_pathspec_depth(const struct pathspec *ps, | |
283 | const char *name, int namelen, | |
284 | int prefix, char *seen) | |
285 | { | |
286 | int i, retval = 0; | |
287 | ||
5c6933d2 NTND |
288 | GUARD_PATHSPEC(ps, |
289 | PATHSPEC_FROMTOP | | |
290 | PATHSPEC_MAXDEPTH | | |
bd30c2e4 | 291 | PATHSPEC_LITERAL | |
93d93537 NTND |
292 | PATHSPEC_GLOB | |
293 | PATHSPEC_ICASE); | |
8f4f8f45 | 294 | |
61cf2820 | 295 | if (!ps->nr) { |
6330a171 NTND |
296 | if (!ps->recursive || |
297 | !(ps->magic & PATHSPEC_MAXDEPTH) || | |
298 | ps->max_depth == -1) | |
61cf2820 NTND |
299 | return MATCHED_RECURSIVELY; |
300 | ||
301 | if (within_depth(name, namelen, 0, ps->max_depth)) | |
302 | return MATCHED_EXACTLY; | |
303 | else | |
304 | return 0; | |
305 | } | |
306 | ||
307 | name += prefix; | |
308 | namelen -= prefix; | |
309 | ||
310 | for (i = ps->nr - 1; i >= 0; i--) { | |
311 | int how; | |
312 | if (seen && seen[i] == MATCHED_EXACTLY) | |
313 | continue; | |
314 | how = match_pathspec_item(ps->items+i, prefix, name, namelen); | |
6330a171 NTND |
315 | if (ps->recursive && |
316 | (ps->magic & PATHSPEC_MAXDEPTH) && | |
317 | ps->max_depth != -1 && | |
61cf2820 NTND |
318 | how && how != MATCHED_FNMATCH) { |
319 | int len = ps->items[i].len; | |
320 | if (name[len] == '/') | |
321 | len++; | |
322 | if (within_depth(name+len, namelen-len, 0, ps->max_depth)) | |
323 | how = MATCHED_EXACTLY; | |
324 | else | |
325 | how = 0; | |
326 | } | |
327 | if (how) { | |
328 | if (retval < how) | |
329 | retval = how; | |
330 | if (seen && seen[i] < how) | |
331 | seen[i] = how; | |
332 | } | |
333 | } | |
334 | return retval; | |
335 | } | |
336 | ||
fcd631ed NTND |
337 | /* |
338 | * Return the length of the "simple" part of a path match limiter. | |
339 | */ | |
87323bda | 340 | int simple_length(const char *match) |
fcd631ed NTND |
341 | { |
342 | int len = -1; | |
343 | ||
344 | for (;;) { | |
345 | unsigned char c = *match++; | |
346 | len++; | |
347 | if (c == '\0' || is_glob_special(c)) | |
348 | return len; | |
349 | } | |
350 | } | |
351 | ||
87323bda | 352 | int no_wildcard(const char *string) |
68492fc7 | 353 | { |
fcd631ed | 354 | return string[simple_length(string)] == '\0'; |
68492fc7 LK |
355 | } |
356 | ||
82dce998 NTND |
357 | void parse_exclude_pattern(const char **pattern, |
358 | int *patternlen, | |
359 | int *flags, | |
360 | int *nowildcardlen) | |
84460eec NTND |
361 | { |
362 | const char *p = *pattern; | |
363 | size_t i, len; | |
364 | ||
365 | *flags = 0; | |
366 | if (*p == '!') { | |
367 | *flags |= EXC_FLAG_NEGATIVE; | |
368 | p++; | |
369 | } | |
370 | len = strlen(p); | |
371 | if (len && p[len - 1] == '/') { | |
372 | len--; | |
373 | *flags |= EXC_FLAG_MUSTBEDIR; | |
374 | } | |
375 | for (i = 0; i < len; i++) { | |
376 | if (p[i] == '/') | |
377 | break; | |
378 | } | |
379 | if (i == len) | |
380 | *flags |= EXC_FLAG_NODIR; | |
381 | *nowildcardlen = simple_length(p); | |
382 | /* | |
383 | * we should have excluded the trailing slash from 'p' too, | |
384 | * but that's one more allocation. Instead just make sure | |
385 | * nowildcardlen does not exceed real patternlen | |
386 | */ | |
387 | if (*nowildcardlen > len) | |
388 | *nowildcardlen = len; | |
389 | if (*p == '*' && no_wildcard(p + 1)) | |
390 | *flags |= EXC_FLAG_ENDSWITH; | |
391 | *pattern = p; | |
392 | *patternlen = len; | |
393 | } | |
394 | ||
453ec4bd | 395 | void add_exclude(const char *string, const char *base, |
c04318e4 | 396 | int baselen, struct exclude_list *el, int srcpos) |
453ec4bd | 397 | { |
d6b8fc30 | 398 | struct exclude *x; |
84460eec NTND |
399 | int patternlen; |
400 | int flags; | |
401 | int nowildcardlen; | |
453ec4bd | 402 | |
84460eec NTND |
403 | parse_exclude_pattern(&string, &patternlen, &flags, &nowildcardlen); |
404 | if (flags & EXC_FLAG_MUSTBEDIR) { | |
d6b8fc30 | 405 | char *s; |
84460eec | 406 | x = xmalloc(sizeof(*x) + patternlen + 1); |
4b25d091 | 407 | s = (char *)(x+1); |
84460eec NTND |
408 | memcpy(s, string, patternlen); |
409 | s[patternlen] = '\0'; | |
d6b8fc30 | 410 | x->pattern = s; |
d6b8fc30 JH |
411 | } else { |
412 | x = xmalloc(sizeof(*x)); | |
413 | x->pattern = string; | |
414 | } | |
84460eec NTND |
415 | x->patternlen = patternlen; |
416 | x->nowildcardlen = nowildcardlen; | |
453ec4bd LT |
417 | x->base = base; |
418 | x->baselen = baselen; | |
d6b8fc30 | 419 | x->flags = flags; |
c04318e4 | 420 | x->srcpos = srcpos; |
840fc334 AS |
421 | ALLOC_GROW(el->excludes, el->nr + 1, el->alloc); |
422 | el->excludes[el->nr++] = x; | |
c04318e4 | 423 | x->el = el; |
453ec4bd LT |
424 | } |
425 | ||
c28b3d6e NTND |
426 | static void *read_skip_worktree_file_from_index(const char *path, size_t *size) |
427 | { | |
428 | int pos, len; | |
429 | unsigned long sz; | |
430 | enum object_type type; | |
431 | void *data; | |
c28b3d6e NTND |
432 | |
433 | len = strlen(path); | |
71261027 | 434 | pos = cache_name_pos(path, len); |
c28b3d6e NTND |
435 | if (pos < 0) |
436 | return NULL; | |
71261027 | 437 | if (!ce_skip_worktree(active_cache[pos])) |
c28b3d6e | 438 | return NULL; |
71261027 | 439 | data = read_sha1_file(active_cache[pos]->sha1, &type, &sz); |
c28b3d6e NTND |
440 | if (!data || type != OBJ_BLOB) { |
441 | free(data); | |
442 | return NULL; | |
443 | } | |
444 | *size = xsize_t(sz); | |
445 | return data; | |
446 | } | |
447 | ||
f6198812 AS |
448 | /* |
449 | * Frees memory within el which was allocated for exclude patterns and | |
450 | * the file buffer. Does not free el itself. | |
451 | */ | |
452 | void clear_exclude_list(struct exclude_list *el) | |
0fd0e241 NTND |
453 | { |
454 | int i; | |
455 | ||
456 | for (i = 0; i < el->nr; i++) | |
457 | free(el->excludes[i]); | |
458 | free(el->excludes); | |
c082df24 | 459 | free(el->filebuf); |
0fd0e241 NTND |
460 | |
461 | el->nr = 0; | |
462 | el->excludes = NULL; | |
c082df24 | 463 | el->filebuf = NULL; |
0fd0e241 NTND |
464 | } |
465 | ||
cb097534 NTND |
466 | int add_excludes_from_file_to_list(const char *fname, |
467 | const char *base, | |
468 | int baselen, | |
840fc334 | 469 | struct exclude_list *el, |
cb097534 | 470 | int check_index) |
453ec4bd | 471 | { |
c470701a | 472 | struct stat st; |
c04318e4 | 473 | int fd, i, lineno = 1; |
9d14017a | 474 | size_t size = 0; |
453ec4bd LT |
475 | char *buf, *entry; |
476 | ||
477 | fd = open(fname, O_RDONLY); | |
c28b3d6e | 478 | if (fd < 0 || fstat(fd, &st) < 0) { |
69660731 | 479 | if (errno != ENOENT) |
55b38a48 | 480 | warn_on_inaccessible(fname); |
c28b3d6e NTND |
481 | if (0 <= fd) |
482 | close(fd); | |
483 | if (!check_index || | |
484 | (buf = read_skip_worktree_file_from_index(fname, &size)) == NULL) | |
485 | return -1; | |
45d76f17 NTND |
486 | if (size == 0) { |
487 | free(buf); | |
488 | return 0; | |
489 | } | |
490 | if (buf[size-1] != '\n') { | |
491 | buf = xrealloc(buf, size+1); | |
492 | buf[size++] = '\n'; | |
493 | } | |
453ec4bd | 494 | } |
c28b3d6e NTND |
495 | else { |
496 | size = xsize_t(st.st_size); | |
497 | if (size == 0) { | |
498 | close(fd); | |
499 | return 0; | |
500 | } | |
45d76f17 | 501 | buf = xmalloc(size+1); |
c28b3d6e | 502 | if (read_in_full(fd, buf, size) != size) { |
45d76f17 | 503 | free(buf); |
c28b3d6e NTND |
504 | close(fd); |
505 | return -1; | |
506 | } | |
45d76f17 | 507 | buf[size++] = '\n'; |
c28b3d6e | 508 | close(fd); |
6ba78238 | 509 | } |
453ec4bd | 510 | |
c082df24 | 511 | el->filebuf = buf; |
453ec4bd | 512 | entry = buf; |
45d76f17 NTND |
513 | for (i = 0; i < size; i++) { |
514 | if (buf[i] == '\n') { | |
453ec4bd LT |
515 | if (entry != buf + i && entry[0] != '#') { |
516 | buf[i - (i && buf[i-1] == '\r')] = 0; | |
c04318e4 | 517 | add_exclude(entry, base, baselen, el, lineno); |
453ec4bd | 518 | } |
c04318e4 | 519 | lineno++; |
453ec4bd LT |
520 | entry = buf + i + 1; |
521 | } | |
522 | } | |
523 | return 0; | |
453ec4bd LT |
524 | } |
525 | ||
c04318e4 AS |
526 | struct exclude_list *add_exclude_list(struct dir_struct *dir, |
527 | int group_type, const char *src) | |
c082df24 AS |
528 | { |
529 | struct exclude_list *el; | |
530 | struct exclude_list_group *group; | |
531 | ||
532 | group = &dir->exclude_list_group[group_type]; | |
533 | ALLOC_GROW(group->el, group->nr + 1, group->alloc); | |
534 | el = &group->el[group->nr++]; | |
535 | memset(el, 0, sizeof(*el)); | |
c04318e4 | 536 | el->src = src; |
c082df24 AS |
537 | return el; |
538 | } | |
539 | ||
540 | /* | |
541 | * Used to set up core.excludesfile and .git/info/exclude lists. | |
542 | */ | |
453ec4bd LT |
543 | void add_excludes_from_file(struct dir_struct *dir, const char *fname) |
544 | { | |
c082df24 | 545 | struct exclude_list *el; |
c04318e4 | 546 | el = add_exclude_list(dir, EXC_FILE, fname); |
c082df24 | 547 | if (add_excludes_from_file_to_list(fname, "", 0, el, 0) < 0) |
453ec4bd LT |
548 | die("cannot use %s as an exclude file", fname); |
549 | } | |
550 | ||
82dce998 NTND |
551 | int match_basename(const char *basename, int basenamelen, |
552 | const char *pattern, int prefix, int patternlen, | |
553 | int flags) | |
593cb880 NTND |
554 | { |
555 | if (prefix == patternlen) { | |
0b6e56df JH |
556 | if (patternlen == basenamelen && |
557 | !strncmp_icase(pattern, basename, basenamelen)) | |
593cb880 NTND |
558 | return 1; |
559 | } else if (flags & EXC_FLAG_ENDSWITH) { | |
0b6e56df | 560 | /* "*literal" matching against "fooliteral" */ |
593cb880 | 561 | if (patternlen - 1 <= basenamelen && |
0b6e56df JH |
562 | !strncmp_icase(pattern + 1, |
563 | basename + basenamelen - (patternlen - 1), | |
564 | patternlen - 1)) | |
593cb880 NTND |
565 | return 1; |
566 | } else { | |
0b6e56df JH |
567 | if (fnmatch_icase_mem(pattern, patternlen, |
568 | basename, basenamelen, | |
569 | 0) == 0) | |
593cb880 NTND |
570 | return 1; |
571 | } | |
572 | return 0; | |
573 | } | |
574 | ||
82dce998 NTND |
575 | int match_pathname(const char *pathname, int pathlen, |
576 | const char *base, int baselen, | |
577 | const char *pattern, int prefix, int patternlen, | |
578 | int flags) | |
b5592632 NTND |
579 | { |
580 | const char *name; | |
581 | int namelen; | |
582 | ||
583 | /* | |
584 | * match with FNM_PATHNAME; the pattern has base implicitly | |
585 | * in front of it. | |
586 | */ | |
587 | if (*pattern == '/') { | |
588 | pattern++; | |
982ac873 | 589 | patternlen--; |
b5592632 NTND |
590 | prefix--; |
591 | } | |
592 | ||
593 | /* | |
594 | * baselen does not count the trailing slash. base[] may or | |
595 | * may not end with a trailing slash though. | |
596 | */ | |
597 | if (pathlen < baselen + 1 || | |
598 | (baselen && pathname[baselen] != '/') || | |
599 | strncmp_icase(pathname, base, baselen)) | |
600 | return 0; | |
601 | ||
602 | namelen = baselen ? pathlen - baselen - 1 : pathlen; | |
603 | name = pathname + pathlen - namelen; | |
604 | ||
605 | if (prefix) { | |
606 | /* | |
607 | * if the non-wildcard part is longer than the | |
608 | * remaining pathname, surely it cannot match. | |
609 | */ | |
610 | if (prefix > namelen) | |
611 | return 0; | |
612 | ||
613 | if (strncmp_icase(pattern, name, prefix)) | |
614 | return 0; | |
615 | pattern += prefix; | |
ab3aebc1 | 616 | patternlen -= prefix; |
b5592632 NTND |
617 | name += prefix; |
618 | namelen -= prefix; | |
ab3aebc1 JK |
619 | |
620 | /* | |
621 | * If the whole pattern did not have a wildcard, | |
622 | * then our prefix match is all we need; we | |
623 | * do not need to call fnmatch at all. | |
624 | */ | |
625 | if (!patternlen && !namelen) | |
626 | return 1; | |
b5592632 NTND |
627 | } |
628 | ||
ab3aebc1 JK |
629 | return fnmatch_icase_mem(pattern, patternlen, |
630 | name, namelen, | |
f30366b2 | 631 | WM_PATHNAME) == 0; |
b5592632 NTND |
632 | } |
633 | ||
578cd7c3 AS |
634 | /* |
635 | * Scan the given exclude list in reverse to see whether pathname | |
636 | * should be ignored. The first match (i.e. the last on the list), if | |
637 | * any, determines the fate. Returns the exclude_list element which | |
638 | * matched, or NULL for undecided. | |
453ec4bd | 639 | */ |
578cd7c3 AS |
640 | static struct exclude *last_exclude_matching_from_list(const char *pathname, |
641 | int pathlen, | |
642 | const char *basename, | |
643 | int *dtype, | |
644 | struct exclude_list *el) | |
453ec4bd LT |
645 | { |
646 | int i; | |
647 | ||
35a94d44 | 648 | if (!el->nr) |
578cd7c3 | 649 | return NULL; /* undefined */ |
d6b8fc30 | 650 | |
35a94d44 NTND |
651 | for (i = el->nr - 1; 0 <= i; i--) { |
652 | struct exclude *x = el->excludes[i]; | |
b5592632 | 653 | const char *exclude = x->pattern; |
b5592632 | 654 | int prefix = x->nowildcardlen; |
35a94d44 NTND |
655 | |
656 | if (x->flags & EXC_FLAG_MUSTBEDIR) { | |
657 | if (*dtype == DT_UNKNOWN) | |
658 | *dtype = get_dtype(NULL, pathname, pathlen); | |
659 | if (*dtype != DT_DIR) | |
660 | continue; | |
661 | } | |
d6b8fc30 | 662 | |
35a94d44 | 663 | if (x->flags & EXC_FLAG_NODIR) { |
593cb880 NTND |
664 | if (match_basename(basename, |
665 | pathlen - (basename - pathname), | |
666 | exclude, prefix, x->patternlen, | |
667 | x->flags)) | |
578cd7c3 | 668 | return x; |
35a94d44 NTND |
669 | continue; |
670 | } | |
671 | ||
b5592632 NTND |
672 | assert(x->baselen == 0 || x->base[x->baselen - 1] == '/'); |
673 | if (match_pathname(pathname, pathlen, | |
674 | x->base, x->baselen ? x->baselen - 1 : 0, | |
675 | exclude, prefix, x->patternlen, x->flags)) | |
578cd7c3 | 676 | return x; |
453ec4bd | 677 | } |
578cd7c3 AS |
678 | return NULL; /* undecided */ |
679 | } | |
680 | ||
681 | /* | |
682 | * Scan the list and let the last match determine the fate. | |
683 | * Return 1 for exclude, 0 for include and -1 for undecided. | |
684 | */ | |
685 | int is_excluded_from_list(const char *pathname, | |
686 | int pathlen, const char *basename, int *dtype, | |
687 | struct exclude_list *el) | |
688 | { | |
689 | struct exclude *exclude; | |
690 | exclude = last_exclude_matching_from_list(pathname, pathlen, basename, dtype, el); | |
691 | if (exclude) | |
692 | return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1; | |
453ec4bd LT |
693 | return -1; /* undecided */ |
694 | } | |
695 | ||
46aa2f95 KB |
696 | static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir, |
697 | const char *pathname, int pathlen, const char *basename, | |
698 | int *dtype_p) | |
699 | { | |
700 | int i, j; | |
701 | struct exclude_list_group *group; | |
702 | struct exclude *exclude; | |
703 | for (i = EXC_CMDL; i <= EXC_FILE; i++) { | |
704 | group = &dir->exclude_list_group[i]; | |
705 | for (j = group->nr - 1; j >= 0; j--) { | |
706 | exclude = last_exclude_matching_from_list( | |
707 | pathname, pathlen, basename, dtype_p, | |
708 | &group->el[j]); | |
709 | if (exclude) | |
710 | return exclude; | |
711 | } | |
712 | } | |
713 | return NULL; | |
714 | } | |
715 | ||
6cd5c582 KB |
716 | /* |
717 | * Loads the per-directory exclude list for the substring of base | |
718 | * which has a char length of baselen. | |
719 | */ | |
720 | static void prep_exclude(struct dir_struct *dir, const char *base, int baselen) | |
721 | { | |
722 | struct exclude_list_group *group; | |
723 | struct exclude_list *el; | |
724 | struct exclude_stack *stk = NULL; | |
725 | int current; | |
726 | ||
6cd5c582 KB |
727 | group = &dir->exclude_list_group[EXC_DIRS]; |
728 | ||
729 | /* Pop the exclude lists from the EXCL_DIRS exclude_list_group | |
730 | * which originate from directories not in the prefix of the | |
731 | * path being checked. */ | |
732 | while ((stk = dir->exclude_stack) != NULL) { | |
733 | if (stk->baselen <= baselen && | |
734 | !strncmp(dir->basebuf, base, stk->baselen)) | |
735 | break; | |
736 | el = &group->el[dir->exclude_stack->exclude_ix]; | |
737 | dir->exclude_stack = stk->prev; | |
95c6f271 | 738 | dir->exclude = NULL; |
6cd5c582 KB |
739 | free((char *)el->src); /* see strdup() below */ |
740 | clear_exclude_list(el); | |
741 | free(stk); | |
742 | group->nr--; | |
743 | } | |
744 | ||
95c6f271 KB |
745 | /* Skip traversing into sub directories if the parent is excluded */ |
746 | if (dir->exclude) | |
747 | return; | |
748 | ||
6cd5c582 KB |
749 | /* Read from the parent directories and push them down. */ |
750 | current = stk ? stk->baselen : -1; | |
751 | while (current < baselen) { | |
752 | struct exclude_stack *stk = xcalloc(1, sizeof(*stk)); | |
753 | const char *cp; | |
754 | ||
755 | if (current < 0) { | |
756 | cp = base; | |
757 | current = 0; | |
758 | } | |
759 | else { | |
760 | cp = strchr(base + current + 1, '/'); | |
761 | if (!cp) | |
762 | die("oops in prep_exclude"); | |
763 | cp++; | |
764 | } | |
765 | stk->prev = dir->exclude_stack; | |
766 | stk->baselen = cp - base; | |
95c6f271 KB |
767 | stk->exclude_ix = group->nr; |
768 | el = add_exclude_list(dir, EXC_DIRS, NULL); | |
6cd5c582 KB |
769 | memcpy(dir->basebuf + current, base + current, |
770 | stk->baselen - current); | |
95c6f271 KB |
771 | |
772 | /* Abort if the directory is excluded */ | |
773 | if (stk->baselen) { | |
774 | int dt = DT_DIR; | |
775 | dir->basebuf[stk->baselen - 1] = 0; | |
776 | dir->exclude = last_exclude_matching_from_lists(dir, | |
777 | dir->basebuf, stk->baselen - 1, | |
778 | dir->basebuf + current, &dt); | |
779 | dir->basebuf[stk->baselen - 1] = '/'; | |
c3c327de KB |
780 | if (dir->exclude && |
781 | dir->exclude->flags & EXC_FLAG_NEGATIVE) | |
782 | dir->exclude = NULL; | |
95c6f271 KB |
783 | if (dir->exclude) { |
784 | dir->basebuf[stk->baselen] = 0; | |
785 | dir->exclude_stack = stk; | |
786 | return; | |
787 | } | |
788 | } | |
789 | ||
790 | /* Try to read per-directory file unless path is too long */ | |
791 | if (dir->exclude_per_dir && | |
792 | stk->baselen + strlen(dir->exclude_per_dir) < PATH_MAX) { | |
793 | strcpy(dir->basebuf + stk->baselen, | |
794 | dir->exclude_per_dir); | |
795 | /* | |
796 | * dir->basebuf gets reused by the traversal, but we | |
797 | * need fname to remain unchanged to ensure the src | |
798 | * member of each struct exclude correctly | |
799 | * back-references its source file. Other invocations | |
800 | * of add_exclude_list provide stable strings, so we | |
801 | * strdup() and free() here in the caller. | |
802 | */ | |
803 | el->src = strdup(dir->basebuf); | |
804 | add_excludes_from_file_to_list(dir->basebuf, | |
805 | dir->basebuf, stk->baselen, el, 1); | |
806 | } | |
6cd5c582 KB |
807 | dir->exclude_stack = stk; |
808 | current = stk->baselen; | |
809 | } | |
810 | dir->basebuf[baselen] = '\0'; | |
811 | } | |
812 | ||
f4cd69a6 AS |
813 | /* |
814 | * Loads the exclude lists for the directory containing pathname, then | |
815 | * scans all exclude lists to determine whether pathname is excluded. | |
816 | * Returns the exclude_list element which matched, or NULL for | |
817 | * undecided. | |
818 | */ | |
b07bc8c8 | 819 | struct exclude *last_exclude_matching(struct dir_struct *dir, |
f4cd69a6 AS |
820 | const char *pathname, |
821 | int *dtype_p) | |
453ec4bd LT |
822 | { |
823 | int pathlen = strlen(pathname); | |
68492fc7 LK |
824 | const char *basename = strrchr(pathname, '/'); |
825 | basename = (basename) ? basename+1 : pathname; | |
453ec4bd | 826 | |
63d285c8 | 827 | prep_exclude(dir, pathname, basename-pathname); |
c082df24 | 828 | |
95c6f271 KB |
829 | if (dir->exclude) |
830 | return dir->exclude; | |
831 | ||
46aa2f95 KB |
832 | return last_exclude_matching_from_lists(dir, pathname, pathlen, |
833 | basename, dtype_p); | |
f4cd69a6 AS |
834 | } |
835 | ||
836 | /* | |
837 | * Loads the exclude lists for the directory containing pathname, then | |
838 | * scans all exclude lists to determine whether pathname is excluded. | |
839 | * Returns 1 if true, otherwise 0. | |
840 | */ | |
b07bc8c8 | 841 | int is_excluded(struct dir_struct *dir, const char *pathname, int *dtype_p) |
f4cd69a6 AS |
842 | { |
843 | struct exclude *exclude = | |
844 | last_exclude_matching(dir, pathname, dtype_p); | |
845 | if (exclude) | |
846 | return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1; | |
453ec4bd LT |
847 | return 0; |
848 | } | |
849 | ||
f3fa1838 JH |
850 | static struct dir_entry *dir_entry_new(const char *pathname, int len) |
851 | { | |
453ec4bd LT |
852 | struct dir_entry *ent; |
853 | ||
453ec4bd LT |
854 | ent = xmalloc(sizeof(*ent) + len + 1); |
855 | ent->len = len; | |
856 | memcpy(ent->name, pathname, len); | |
857 | ent->name[len] = 0; | |
4d06f8ac | 858 | return ent; |
453ec4bd LT |
859 | } |
860 | ||
159b3212 | 861 | static struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len) |
6815e569 | 862 | { |
ebbd7439 | 863 | if (cache_file_exists(pathname, len, ignore_case)) |
6815e569 JK |
864 | return NULL; |
865 | ||
25fd2f7a | 866 | ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc); |
6815e569 JK |
867 | return dir->entries[dir->nr++] = dir_entry_new(pathname, len); |
868 | } | |
869 | ||
108da0db | 870 | struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len) |
2abd31b0 | 871 | { |
6e4f981f | 872 | if (!cache_name_is_other(pathname, len)) |
2abd31b0 JK |
873 | return NULL; |
874 | ||
25fd2f7a | 875 | ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc); |
2abd31b0 JK |
876 | return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len); |
877 | } | |
878 | ||
09595258 LT |
879 | enum exist_status { |
880 | index_nonexistent = 0, | |
881 | index_directory, | |
4b05548f | 882 | index_gitdir |
09595258 LT |
883 | }; |
884 | ||
5102c617 | 885 | /* |
71261027 | 886 | * Do not use the alphabetically sorted index to look up |
5102c617 | 887 | * the directory name; instead, use the case insensitive |
ebbd7439 | 888 | * directory hash. |
5102c617 JJ |
889 | */ |
890 | static enum exist_status directory_exists_in_index_icase(const char *dirname, int len) | |
891 | { | |
d28eec26 | 892 | const struct cache_entry *ce = cache_dir_exists(dirname, len); |
5102c617 JJ |
893 | unsigned char endchar; |
894 | ||
895 | if (!ce) | |
896 | return index_nonexistent; | |
897 | endchar = ce->name[len]; | |
898 | ||
899 | /* | |
900 | * The cache_entry structure returned will contain this dirname | |
901 | * and possibly additional path components. | |
902 | */ | |
903 | if (endchar == '/') | |
904 | return index_directory; | |
905 | ||
906 | /* | |
907 | * If there are no additional path components, then this cache_entry | |
908 | * represents a submodule. Submodules, despite being directories, | |
909 | * are stored in the cache without a closing slash. | |
910 | */ | |
911 | if (!endchar && S_ISGITLINK(ce->ce_mode)) | |
912 | return index_gitdir; | |
913 | ||
914 | /* This should never be hit, but it exists just in case. */ | |
915 | return index_nonexistent; | |
916 | } | |
917 | ||
09595258 LT |
918 | /* |
919 | * The index sorts alphabetically by entry name, which | |
920 | * means that a gitlink sorts as '\0' at the end, while | |
921 | * a directory (which is defined not as an entry, but as | |
922 | * the files it contains) will sort with the '/' at the | |
923 | * end. | |
924 | */ | |
925 | static enum exist_status directory_exists_in_index(const char *dirname, int len) | |
453ec4bd | 926 | { |
5102c617 JJ |
927 | int pos; |
928 | ||
929 | if (ignore_case) | |
930 | return directory_exists_in_index_icase(dirname, len); | |
931 | ||
932 | pos = cache_name_pos(dirname, len); | |
09595258 LT |
933 | if (pos < 0) |
934 | pos = -pos-1; | |
935 | while (pos < active_nr) { | |
9c5e6c80 | 936 | const struct cache_entry *ce = active_cache[pos++]; |
09595258 LT |
937 | unsigned char endchar; |
938 | ||
939 | if (strncmp(ce->name, dirname, len)) | |
940 | break; | |
941 | endchar = ce->name[len]; | |
942 | if (endchar > '/') | |
943 | break; | |
944 | if (endchar == '/') | |
945 | return index_directory; | |
7a51ed66 | 946 | if (!endchar && S_ISGITLINK(ce->ce_mode)) |
09595258 LT |
947 | return index_gitdir; |
948 | } | |
949 | return index_nonexistent; | |
950 | } | |
951 | ||
952 | /* | |
953 | * When we find a directory when traversing the filesystem, we | |
954 | * have three distinct cases: | |
955 | * | |
956 | * - ignore it | |
957 | * - see it as a directory | |
958 | * - recurse into it | |
959 | * | |
960 | * and which one we choose depends on a combination of existing | |
961 | * git index contents and the flags passed into the directory | |
962 | * traversal routine. | |
963 | * | |
964 | * Case 1: If we *already* have entries in the index under that | |
5bd8e2d8 KB |
965 | * directory name, we always recurse into the directory to see |
966 | * all the files. | |
09595258 LT |
967 | * |
968 | * Case 2: If we *already* have that directory name as a gitlink, | |
969 | * we always continue to see it as a gitlink, regardless of whether | |
970 | * there is an actual git directory there or not (it might not | |
971 | * be checked out as a subproject!) | |
972 | * | |
973 | * Case 3: if we didn't have it in the index previously, we | |
974 | * have a few sub-cases: | |
975 | * | |
976 | * (a) if "show_other_directories" is true, we show it as | |
977 | * just a directory, unless "hide_empty_directories" is | |
defd7c7b KB |
978 | * also true, in which case we need to check if it contains any |
979 | * untracked and / or ignored files. | |
09595258 | 980 | * (b) if it looks like a git directory, and we don't have |
302b9282 | 981 | * 'no_gitlinks' set we treat it as a gitlink, and show it |
09595258 LT |
982 | * as a directory. |
983 | * (c) otherwise, we recurse into it. | |
984 | */ | |
defd7c7b | 985 | static enum path_treatment treat_directory(struct dir_struct *dir, |
721ac4ed | 986 | const char *dirname, int len, int exclude, |
09595258 LT |
987 | const struct path_simplify *simplify) |
988 | { | |
989 | /* The "len-1" is to strip the final '/' */ | |
990 | switch (directory_exists_in_index(dirname, len-1)) { | |
991 | case index_directory: | |
defd7c7b | 992 | return path_recurse; |
09595258 LT |
993 | |
994 | case index_gitdir: | |
26c986e1 | 995 | return path_none; |
09595258 LT |
996 | |
997 | case index_nonexistent: | |
7c4c97c0 | 998 | if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES) |
09595258 | 999 | break; |
7c4c97c0 | 1000 | if (!(dir->flags & DIR_NO_GITLINKS)) { |
09595258 LT |
1001 | unsigned char sha1[20]; |
1002 | if (resolve_gitlink_ref(dirname, "HEAD", sha1) == 0) | |
defd7c7b | 1003 | return path_untracked; |
09595258 | 1004 | } |
defd7c7b | 1005 | return path_recurse; |
09595258 LT |
1006 | } |
1007 | ||
1008 | /* This is the "show_other_directories" case */ | |
721ac4ed | 1009 | |
184d2a8e | 1010 | if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES)) |
defd7c7b KB |
1011 | return exclude ? path_excluded : path_untracked; |
1012 | ||
1013 | return read_directory_recursive(dir, dirname, len, 1, simplify); | |
453ec4bd LT |
1014 | } |
1015 | ||
9fc42d60 LT |
1016 | /* |
1017 | * This is an inexact early pruning of any recursive directory | |
1018 | * reading - if the path cannot possibly be in the pathspec, | |
1019 | * return true, and we'll skip it early. | |
1020 | */ | |
1021 | static int simplify_away(const char *path, int pathlen, const struct path_simplify *simplify) | |
1022 | { | |
1023 | if (simplify) { | |
1024 | for (;;) { | |
1025 | const char *match = simplify->path; | |
1026 | int len = simplify->len; | |
1027 | ||
1028 | if (!match) | |
1029 | break; | |
1030 | if (len > pathlen) | |
1031 | len = pathlen; | |
1032 | if (!memcmp(path, match, len)) | |
1033 | return 0; | |
1034 | simplify++; | |
1035 | } | |
1036 | return 1; | |
1037 | } | |
1038 | return 0; | |
1039 | } | |
1040 | ||
29209cbe JK |
1041 | /* |
1042 | * This function tells us whether an excluded path matches a | |
1043 | * list of "interesting" pathspecs. That is, whether a path matched | |
1044 | * by any of the pathspecs could possibly be ignored by excluding | |
1045 | * the specified path. This can happen if: | |
1046 | * | |
1047 | * 1. the path is mentioned explicitly in the pathspec | |
1048 | * | |
1049 | * 2. the path is a directory prefix of some element in the | |
1050 | * pathspec | |
1051 | */ | |
1052 | static int exclude_matches_pathspec(const char *path, int len, | |
1053 | const struct path_simplify *simplify) | |
e96980ef JK |
1054 | { |
1055 | if (simplify) { | |
1056 | for (; simplify->path; simplify++) { | |
1057 | if (len == simplify->len | |
1058 | && !memcmp(path, simplify->path, len)) | |
1059 | return 1; | |
29209cbe JK |
1060 | if (len < simplify->len |
1061 | && simplify->path[len] == '/' | |
1062 | && !memcmp(path, simplify->path, len)) | |
1063 | return 1; | |
e96980ef JK |
1064 | } |
1065 | } | |
1066 | return 0; | |
1067 | } | |
1068 | ||
443e061a LT |
1069 | static int get_index_dtype(const char *path, int len) |
1070 | { | |
1071 | int pos; | |
9c5e6c80 | 1072 | const struct cache_entry *ce; |
443e061a | 1073 | |
ebbd7439 | 1074 | ce = cache_file_exists(path, len, 0); |
443e061a LT |
1075 | if (ce) { |
1076 | if (!ce_uptodate(ce)) | |
1077 | return DT_UNKNOWN; | |
1078 | if (S_ISGITLINK(ce->ce_mode)) | |
1079 | return DT_DIR; | |
1080 | /* | |
1081 | * Nobody actually cares about the | |
1082 | * difference between DT_LNK and DT_REG | |
1083 | */ | |
1084 | return DT_REG; | |
1085 | } | |
1086 | ||
1087 | /* Try to look it up as a directory */ | |
1088 | pos = cache_name_pos(path, len); | |
1089 | if (pos >= 0) | |
1090 | return DT_UNKNOWN; | |
1091 | pos = -pos-1; | |
1092 | while (pos < active_nr) { | |
1093 | ce = active_cache[pos++]; | |
1094 | if (strncmp(ce->name, path, len)) | |
1095 | break; | |
1096 | if (ce->name[len] > '/') | |
1097 | break; | |
1098 | if (ce->name[len] < '/') | |
1099 | continue; | |
1100 | if (!ce_uptodate(ce)) | |
1101 | break; /* continue? */ | |
1102 | return DT_DIR; | |
1103 | } | |
1104 | return DT_UNKNOWN; | |
1105 | } | |
1106 | ||
caa6b782 | 1107 | static int get_dtype(struct dirent *de, const char *path, int len) |
07134421 | 1108 | { |
6831a88a | 1109 | int dtype = de ? DTYPE(de) : DT_UNKNOWN; |
07134421 LT |
1110 | struct stat st; |
1111 | ||
1112 | if (dtype != DT_UNKNOWN) | |
1113 | return dtype; | |
443e061a LT |
1114 | dtype = get_index_dtype(path, len); |
1115 | if (dtype != DT_UNKNOWN) | |
1116 | return dtype; | |
1117 | if (lstat(path, &st)) | |
07134421 LT |
1118 | return dtype; |
1119 | if (S_ISREG(st.st_mode)) | |
1120 | return DT_REG; | |
1121 | if (S_ISDIR(st.st_mode)) | |
1122 | return DT_DIR; | |
1123 | if (S_ISLNK(st.st_mode)) | |
1124 | return DT_LNK; | |
1125 | return dtype; | |
1126 | } | |
1127 | ||
16e2cfa9 | 1128 | static enum path_treatment treat_one_path(struct dir_struct *dir, |
49dc2cc2 | 1129 | struct strbuf *path, |
16e2cfa9 JH |
1130 | const struct path_simplify *simplify, |
1131 | int dtype, struct dirent *de) | |
53cc5356 | 1132 | { |
8aaf8d77 | 1133 | int exclude; |
ebbd7439 | 1134 | int has_path_in_index = !!cache_file_exists(path->buf, path->len, ignore_case); |
2eac2a4c | 1135 | |
8aaf8d77 KB |
1136 | if (dtype == DT_UNKNOWN) |
1137 | dtype = get_dtype(de, path->buf, path->len); | |
1138 | ||
1139 | /* Always exclude indexed files */ | |
2eac2a4c | 1140 | if (dtype != DT_DIR && has_path_in_index) |
defd7c7b | 1141 | return path_none; |
8aaf8d77 | 1142 | |
2eac2a4c JH |
1143 | /* |
1144 | * When we are looking at a directory P in the working tree, | |
1145 | * there are three cases: | |
1146 | * | |
1147 | * (1) P exists in the index. Everything inside the directory P in | |
1148 | * the working tree needs to go when P is checked out from the | |
1149 | * index. | |
1150 | * | |
1151 | * (2) P does not exist in the index, but there is P/Q in the index. | |
1152 | * We know P will stay a directory when we check out the contents | |
1153 | * of the index, but we do not know yet if there is a directory | |
1154 | * P/Q in the working tree to be killed, so we need to recurse. | |
1155 | * | |
1156 | * (3) P does not exist in the index, and there is no P/Q in the index | |
1157 | * to require P to be a directory, either. Only in this case, we | |
1158 | * know that everything inside P will not be killed without | |
1159 | * recursing. | |
1160 | */ | |
1161 | if ((dir->flags & DIR_COLLECT_KILLED_ONLY) && | |
1162 | (dtype == DT_DIR) && | |
de372b1b ES |
1163 | !has_path_in_index && |
1164 | (directory_exists_in_index(path->buf, path->len) == index_nonexistent)) | |
1165 | return path_none; | |
8aaf8d77 KB |
1166 | |
1167 | exclude = is_excluded(dir, path->buf, &dtype); | |
53cc5356 JH |
1168 | |
1169 | /* | |
1170 | * Excluded? If we don't explicitly want to show | |
1171 | * ignored files, ignore it | |
1172 | */ | |
0aaf62b6 | 1173 | if (exclude && !(dir->flags & (DIR_SHOW_IGNORED|DIR_SHOW_IGNORED_TOO))) |
defd7c7b | 1174 | return path_excluded; |
53cc5356 | 1175 | |
53cc5356 JH |
1176 | switch (dtype) { |
1177 | default: | |
defd7c7b | 1178 | return path_none; |
53cc5356 | 1179 | case DT_DIR: |
49dc2cc2 | 1180 | strbuf_addch(path, '/'); |
defd7c7b KB |
1181 | return treat_directory(dir, path->buf, path->len, exclude, |
1182 | simplify); | |
53cc5356 JH |
1183 | case DT_REG: |
1184 | case DT_LNK: | |
defd7c7b | 1185 | return exclude ? path_excluded : path_untracked; |
53cc5356 | 1186 | } |
53cc5356 JH |
1187 | } |
1188 | ||
16e2cfa9 JH |
1189 | static enum path_treatment treat_path(struct dir_struct *dir, |
1190 | struct dirent *de, | |
49dc2cc2 | 1191 | struct strbuf *path, |
16e2cfa9 | 1192 | int baselen, |
49dc2cc2 | 1193 | const struct path_simplify *simplify) |
16e2cfa9 JH |
1194 | { |
1195 | int dtype; | |
1196 | ||
1197 | if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git")) | |
defd7c7b | 1198 | return path_none; |
49dc2cc2 RS |
1199 | strbuf_setlen(path, baselen); |
1200 | strbuf_addstr(path, de->d_name); | |
1201 | if (simplify_away(path->buf, path->len, simplify)) | |
defd7c7b | 1202 | return path_none; |
16e2cfa9 JH |
1203 | |
1204 | dtype = DTYPE(de); | |
49dc2cc2 | 1205 | return treat_one_path(dir, path, simplify, dtype, de); |
16e2cfa9 JH |
1206 | } |
1207 | ||
453ec4bd LT |
1208 | /* |
1209 | * Read a directory tree. We currently ignore anything but | |
1210 | * directories, regular files and symlinks. That's because git | |
1211 | * doesn't handle them at all yet. Maybe that will change some | |
1212 | * day. | |
1213 | * | |
1214 | * Also, we ignore the name ".git" (even if it is not a directory). | |
1215 | * That likely will not change. | |
defd7c7b KB |
1216 | * |
1217 | * Returns the most significant path_treatment value encountered in the scan. | |
453ec4bd | 1218 | */ |
defd7c7b | 1219 | static enum path_treatment read_directory_recursive(struct dir_struct *dir, |
53cc5356 JH |
1220 | const char *base, int baselen, |
1221 | int check_only, | |
1222 | const struct path_simplify *simplify) | |
453ec4bd | 1223 | { |
1528d247 | 1224 | DIR *fdir; |
defd7c7b | 1225 | enum path_treatment state, subdir_state, dir_state = path_none; |
02cb6753 | 1226 | struct dirent *de; |
bef36921 | 1227 | struct strbuf path = STRBUF_INIT; |
453ec4bd | 1228 | |
bef36921 | 1229 | strbuf_add(&path, base, baselen); |
02cb6753 | 1230 | |
1528d247 RS |
1231 | fdir = opendir(path.len ? path.buf : "."); |
1232 | if (!fdir) | |
1233 | goto out; | |
1234 | ||
02cb6753 | 1235 | while ((de = readdir(fdir)) != NULL) { |
defd7c7b KB |
1236 | /* check how the file or directory should be treated */ |
1237 | state = treat_path(dir, de, &path, baselen, simplify); | |
1238 | if (state > dir_state) | |
1239 | dir_state = state; | |
1240 | ||
1241 | /* recurse into subdir if instructed by treat_path */ | |
1242 | if (state == path_recurse) { | |
1243 | subdir_state = read_directory_recursive(dir, path.buf, | |
289ff559 | 1244 | path.len, check_only, simplify); |
defd7c7b KB |
1245 | if (subdir_state > dir_state) |
1246 | dir_state = subdir_state; | |
1247 | } | |
1248 | ||
1249 | if (check_only) { | |
1250 | /* abort early if maximum state has been reached */ | |
1251 | if (dir_state == path_untracked) | |
1252 | break; | |
1253 | /* skip the dir_add_* part */ | |
02cb6753 | 1254 | continue; |
453ec4bd | 1255 | } |
defd7c7b KB |
1256 | |
1257 | /* add the path to the appropriate result list */ | |
1258 | switch (state) { | |
1259 | case path_excluded: | |
1260 | if (dir->flags & DIR_SHOW_IGNORED) | |
1261 | dir_add_name(dir, path.buf, path.len); | |
0aaf62b6 KB |
1262 | else if ((dir->flags & DIR_SHOW_IGNORED_TOO) || |
1263 | ((dir->flags & DIR_COLLECT_IGNORED) && | |
1264 | exclude_matches_pathspec(path.buf, path.len, | |
1265 | simplify))) | |
1266 | dir_add_ignored(dir, path.buf, path.len); | |
defd7c7b KB |
1267 | break; |
1268 | ||
1269 | case path_untracked: | |
1270 | if (!(dir->flags & DIR_SHOW_IGNORED)) | |
1271 | dir_add_name(dir, path.buf, path.len); | |
1528d247 | 1272 | break; |
defd7c7b KB |
1273 | |
1274 | default: | |
1275 | break; | |
1276 | } | |
453ec4bd | 1277 | } |
02cb6753 | 1278 | closedir(fdir); |
1528d247 | 1279 | out: |
bef36921 | 1280 | strbuf_release(&path); |
453ec4bd | 1281 | |
defd7c7b | 1282 | return dir_state; |
453ec4bd LT |
1283 | } |
1284 | ||
1285 | static int cmp_name(const void *p1, const void *p2) | |
1286 | { | |
1287 | const struct dir_entry *e1 = *(const struct dir_entry **)p1; | |
1288 | const struct dir_entry *e2 = *(const struct dir_entry **)p2; | |
1289 | ||
1290 | return cache_name_compare(e1->name, e1->len, | |
1291 | e2->name, e2->len); | |
1292 | } | |
1293 | ||
9fc42d60 LT |
1294 | static struct path_simplify *create_simplify(const char **pathspec) |
1295 | { | |
1296 | int nr, alloc = 0; | |
1297 | struct path_simplify *simplify = NULL; | |
1298 | ||
1299 | if (!pathspec) | |
1300 | return NULL; | |
1301 | ||
1302 | for (nr = 0 ; ; nr++) { | |
1303 | const char *match; | |
1304 | if (nr >= alloc) { | |
1305 | alloc = alloc_nr(alloc); | |
1306 | simplify = xrealloc(simplify, alloc * sizeof(*simplify)); | |
1307 | } | |
1308 | match = *pathspec++; | |
1309 | if (!match) | |
1310 | break; | |
1311 | simplify[nr].path = match; | |
1312 | simplify[nr].len = simple_length(match); | |
1313 | } | |
1314 | simplify[nr].path = NULL; | |
1315 | simplify[nr].len = 0; | |
1316 | return simplify; | |
1317 | } | |
1318 | ||
1319 | static void free_simplify(struct path_simplify *simplify) | |
1320 | { | |
8e0f7003 | 1321 | free(simplify); |
9fc42d60 LT |
1322 | } |
1323 | ||
48ffef96 JH |
1324 | static int treat_leading_path(struct dir_struct *dir, |
1325 | const char *path, int len, | |
1326 | const struct path_simplify *simplify) | |
1327 | { | |
49dc2cc2 RS |
1328 | struct strbuf sb = STRBUF_INIT; |
1329 | int baselen, rc = 0; | |
48ffef96 | 1330 | const char *cp; |
be8a84c5 | 1331 | int old_flags = dir->flags; |
48ffef96 JH |
1332 | |
1333 | while (len && path[len - 1] == '/') | |
1334 | len--; | |
1335 | if (!len) | |
1336 | return 1; | |
1337 | baselen = 0; | |
be8a84c5 | 1338 | dir->flags &= ~DIR_SHOW_OTHER_DIRECTORIES; |
48ffef96 JH |
1339 | while (1) { |
1340 | cp = path + baselen + !!baselen; | |
1341 | cp = memchr(cp, '/', path + len - cp); | |
1342 | if (!cp) | |
1343 | baselen = len; | |
1344 | else | |
1345 | baselen = cp - path; | |
49dc2cc2 RS |
1346 | strbuf_setlen(&sb, 0); |
1347 | strbuf_add(&sb, path, baselen); | |
1348 | if (!is_directory(sb.buf)) | |
1349 | break; | |
1350 | if (simplify_away(sb.buf, sb.len, simplify)) | |
1351 | break; | |
1352 | if (treat_one_path(dir, &sb, simplify, | |
defd7c7b | 1353 | DT_DIR, NULL) == path_none) |
49dc2cc2 RS |
1354 | break; /* do not recurse into it */ |
1355 | if (len <= baselen) { | |
1356 | rc = 1; | |
1357 | break; /* finished checking */ | |
1358 | } | |
48ffef96 | 1359 | } |
49dc2cc2 | 1360 | strbuf_release(&sb); |
be8a84c5 | 1361 | dir->flags = old_flags; |
49dc2cc2 | 1362 | return rc; |
48ffef96 JH |
1363 | } |
1364 | ||
7327d3d1 | 1365 | int read_directory(struct dir_struct *dir, const char *path, int len, const struct pathspec *pathspec) |
9fc42d60 | 1366 | { |
725b0605 | 1367 | struct path_simplify *simplify; |
b4189aa8 | 1368 | |
7327d3d1 NTND |
1369 | /* |
1370 | * Check out create_simplify() | |
1371 | */ | |
1372 | if (pathspec) | |
5c6933d2 NTND |
1373 | GUARD_PATHSPEC(pathspec, |
1374 | PATHSPEC_FROMTOP | | |
1375 | PATHSPEC_MAXDEPTH | | |
bd30c2e4 | 1376 | PATHSPEC_LITERAL | |
93d93537 NTND |
1377 | PATHSPEC_GLOB | |
1378 | PATHSPEC_ICASE); | |
7327d3d1 | 1379 | |
dba2e203 | 1380 | if (has_symlink_leading_path(path, len)) |
725b0605 JH |
1381 | return dir->nr; |
1382 | ||
b3920bbd | 1383 | simplify = create_simplify(pathspec ? pathspec->_raw : NULL); |
48ffef96 JH |
1384 | if (!len || treat_leading_path(dir, path, len, simplify)) |
1385 | read_directory_recursive(dir, path, len, 0, simplify); | |
9fc42d60 | 1386 | free_simplify(simplify); |
453ec4bd | 1387 | qsort(dir->entries, dir->nr, sizeof(struct dir_entry *), cmp_name); |
2abd31b0 | 1388 | qsort(dir->ignored, dir->ignored_nr, sizeof(struct dir_entry *), cmp_name); |
453ec4bd LT |
1389 | return dir->nr; |
1390 | } | |
c91f0d92 | 1391 | |
686a4a06 | 1392 | int file_exists(const char *f) |
c91f0d92 | 1393 | { |
686a4a06 | 1394 | struct stat sb; |
a50f9fc5 | 1395 | return lstat(f, &sb) == 0; |
c91f0d92 | 1396 | } |
e6636747 JS |
1397 | |
1398 | /* | |
9b125da4 NTND |
1399 | * Given two normalized paths (a trailing slash is ok), if subdir is |
1400 | * outside dir, return -1. Otherwise return the offset in subdir that | |
1401 | * can be used as relative path to dir. | |
e6636747 | 1402 | */ |
9b125da4 | 1403 | int dir_inside_of(const char *subdir, const char *dir) |
e6636747 | 1404 | { |
9b125da4 | 1405 | int offset = 0; |
e6636747 | 1406 | |
9b125da4 | 1407 | assert(dir && subdir && *dir && *subdir); |
e6636747 | 1408 | |
9b125da4 | 1409 | while (*dir && *subdir && *dir == *subdir) { |
e6636747 | 1410 | dir++; |
9b125da4 NTND |
1411 | subdir++; |
1412 | offset++; | |
490544b1 | 1413 | } |
9b125da4 NTND |
1414 | |
1415 | /* hel[p]/me vs hel[l]/yeah */ | |
1416 | if (*dir && *subdir) | |
1417 | return -1; | |
1418 | ||
1419 | if (!*subdir) | |
1420 | return !*dir ? offset : -1; /* same dir */ | |
1421 | ||
1422 | /* foo/[b]ar vs foo/[] */ | |
1423 | if (is_dir_sep(dir[-1])) | |
1424 | return is_dir_sep(subdir[-1]) ? offset : -1; | |
1425 | ||
1426 | /* foo[/]bar vs foo[] */ | |
1427 | return is_dir_sep(*subdir) ? offset + 1 : -1; | |
e6636747 JS |
1428 | } |
1429 | ||
1430 | int is_inside_dir(const char *dir) | |
1431 | { | |
b892913d NTND |
1432 | char cwd[PATH_MAX]; |
1433 | if (!dir) | |
1434 | return 0; | |
1435 | if (!getcwd(cwd, sizeof(cwd))) | |
1436 | die_errno("can't find the current directory"); | |
1437 | return dir_inside_of(cwd, dir) >= 0; | |
e6636747 | 1438 | } |
7155b727 | 1439 | |
55892d23 AP |
1440 | int is_empty_dir(const char *path) |
1441 | { | |
1442 | DIR *dir = opendir(path); | |
1443 | struct dirent *e; | |
1444 | int ret = 1; | |
1445 | ||
1446 | if (!dir) | |
1447 | return 0; | |
1448 | ||
1449 | while ((e = readdir(dir)) != NULL) | |
1450 | if (!is_dot_or_dotdot(e->d_name)) { | |
1451 | ret = 0; | |
1452 | break; | |
1453 | } | |
1454 | ||
1455 | closedir(dir); | |
1456 | return ret; | |
1457 | } | |
1458 | ||
ae2f203e | 1459 | static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up) |
7155b727 | 1460 | { |
a0f4afbe | 1461 | DIR *dir; |
7155b727 | 1462 | struct dirent *e; |
ae2f203e | 1463 | int ret = 0, original_len = path->len, len, kept_down = 0; |
a0f4afbe | 1464 | int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY); |
c844a803 | 1465 | int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL); |
a0f4afbe | 1466 | unsigned char submodule_head[20]; |
7155b727 | 1467 | |
a0f4afbe | 1468 | if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) && |
ae2f203e | 1469 | !resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) { |
a0f4afbe | 1470 | /* Do not descend and nuke a nested git work tree. */ |
ae2f203e JH |
1471 | if (kept_up) |
1472 | *kept_up = 1; | |
a0f4afbe | 1473 | return 0; |
ae2f203e | 1474 | } |
a0f4afbe | 1475 | |
ae2f203e | 1476 | flag &= ~REMOVE_DIR_KEEP_TOPLEVEL; |
a0f4afbe | 1477 | dir = opendir(path->buf); |
c844a803 | 1478 | if (!dir) { |
ae2f203e | 1479 | /* an empty dir could be removed even if it is unreadble */ |
c844a803 JH |
1480 | if (!keep_toplevel) |
1481 | return rmdir(path->buf); | |
1482 | else | |
1483 | return -1; | |
1484 | } | |
7155b727 JS |
1485 | if (path->buf[original_len - 1] != '/') |
1486 | strbuf_addch(path, '/'); | |
1487 | ||
1488 | len = path->len; | |
1489 | while ((e = readdir(dir)) != NULL) { | |
1490 | struct stat st; | |
8ca12c0d AP |
1491 | if (is_dot_or_dotdot(e->d_name)) |
1492 | continue; | |
7155b727 JS |
1493 | |
1494 | strbuf_setlen(path, len); | |
1495 | strbuf_addstr(path, e->d_name); | |
1496 | if (lstat(path->buf, &st)) | |
1497 | ; /* fall thru */ | |
1498 | else if (S_ISDIR(st.st_mode)) { | |
ae2f203e | 1499 | if (!remove_dir_recurse(path, flag, &kept_down)) |
7155b727 JS |
1500 | continue; /* happy */ |
1501 | } else if (!only_empty && !unlink(path->buf)) | |
1502 | continue; /* happy, too */ | |
1503 | ||
1504 | /* path too long, stat fails, or non-directory still exists */ | |
1505 | ret = -1; | |
1506 | break; | |
1507 | } | |
1508 | closedir(dir); | |
1509 | ||
1510 | strbuf_setlen(path, original_len); | |
ae2f203e | 1511 | if (!ret && !keep_toplevel && !kept_down) |
7155b727 | 1512 | ret = rmdir(path->buf); |
ae2f203e JH |
1513 | else if (kept_up) |
1514 | /* | |
1515 | * report the uplevel that it is not an error that we | |
1516 | * did not rmdir() our directory. | |
1517 | */ | |
1518 | *kept_up = !ret; | |
7155b727 JS |
1519 | return ret; |
1520 | } | |
039bc64e | 1521 | |
ae2f203e JH |
1522 | int remove_dir_recursively(struct strbuf *path, int flag) |
1523 | { | |
1524 | return remove_dir_recurse(path, flag, NULL); | |
1525 | } | |
1526 | ||
039bc64e JH |
1527 | void setup_standard_excludes(struct dir_struct *dir) |
1528 | { | |
1529 | const char *path; | |
dc79687e | 1530 | char *xdg_path; |
039bc64e JH |
1531 | |
1532 | dir->exclude_per_dir = ".gitignore"; | |
1533 | path = git_path("info/exclude"); | |
dc79687e HKNN |
1534 | if (!excludes_file) { |
1535 | home_config_paths(NULL, &xdg_path, "ignore"); | |
1536 | excludes_file = xdg_path; | |
1537 | } | |
4698c8fe | 1538 | if (!access_or_warn(path, R_OK, 0)) |
039bc64e | 1539 | add_excludes_from_file(dir, path); |
4698c8fe | 1540 | if (excludes_file && !access_or_warn(excludes_file, R_OK, 0)) |
039bc64e JH |
1541 | add_excludes_from_file(dir, excludes_file); |
1542 | } | |
4a92d1bf AR |
1543 | |
1544 | int remove_path(const char *name) | |
1545 | { | |
1546 | char *slash; | |
1547 | ||
9a6728d4 | 1548 | if (unlink(name) && errno != ENOENT && errno != ENOTDIR) |
4a92d1bf AR |
1549 | return -1; |
1550 | ||
1551 | slash = strrchr(name, '/'); | |
1552 | if (slash) { | |
1553 | char *dirs = xstrdup(name); | |
1554 | slash = dirs + (slash - name); | |
1555 | do { | |
1556 | *slash = '\0'; | |
3fc0d131 | 1557 | } while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/'))); |
4a92d1bf AR |
1558 | free(dirs); |
1559 | } | |
1560 | return 0; | |
1561 | } | |
1562 | ||
270be816 AS |
1563 | /* |
1564 | * Frees memory within dir which was allocated for exclude lists and | |
1565 | * the exclude_stack. Does not free dir itself. | |
1566 | */ | |
1567 | void clear_directory(struct dir_struct *dir) | |
1568 | { | |
1569 | int i, j; | |
1570 | struct exclude_list_group *group; | |
1571 | struct exclude_list *el; | |
1572 | struct exclude_stack *stk; | |
1573 | ||
1574 | for (i = EXC_CMDL; i <= EXC_FILE; i++) { | |
1575 | group = &dir->exclude_list_group[i]; | |
1576 | for (j = 0; j < group->nr; j++) { | |
1577 | el = &group->el[j]; | |
1578 | if (i == EXC_DIRS) | |
1579 | free((char *)el->src); | |
1580 | clear_exclude_list(el); | |
1581 | } | |
1582 | free(group->el); | |
1583 | } | |
1584 | ||
1585 | stk = dir->exclude_stack; | |
1586 | while (stk) { | |
1587 | struct exclude_stack *prev = stk->prev; | |
1588 | free(stk); | |
1589 | stk = prev; | |
1590 | } | |
1591 | } |