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Commit | Line | Data |
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86ab7f0c MH |
1 | /* |
2 | * Handle git attributes. See gitattributes(5) for a description of | |
3 | * the file syntax, and Documentation/technical/api-gitattributes.txt | |
4 | * for a description of the API. | |
5 | * | |
6 | * One basic design decision here is that we are not going to support | |
7 | * an insanely large number of attributes. | |
8 | */ | |
9 | ||
06f33c17 | 10 | #define NO_THE_INDEX_COMPATIBILITY_MACROS |
d0bfd026 | 11 | #include "cache.h" |
b2141fc1 | 12 | #include "config.h" |
6df42ab9 | 13 | #include "exec_cmd.h" |
d0bfd026 | 14 | #include "attr.h" |
6eba6210 | 15 | #include "dir.h" |
27547e5f | 16 | #include "utf8.h" |
860a74d9 | 17 | #include "quote.h" |
1a600b75 | 18 | #include "thread-utils.h" |
d0bfd026 | 19 | |
a5e92abd JH |
20 | const char git_attr__true[] = "(builtin)true"; |
21 | const char git_attr__false[] = "\0(builtin)false"; | |
22 | static const char git_attr__unknown[] = "(builtin)unknown"; | |
23 | #define ATTR__TRUE git_attr__true | |
24 | #define ATTR__FALSE git_attr__false | |
25 | #define ATTR__UNSET NULL | |
26 | #define ATTR__UNKNOWN git_attr__unknown | |
515106fa | 27 | |
d0bfd026 JH |
28 | #ifndef DEBUG_ATTR |
29 | #define DEBUG_ATTR 0 | |
30 | #endif | |
31 | ||
32 | struct git_attr { | |
1a600b75 | 33 | int attr_nr; /* unique attribute number */ |
1a600b75 | 34 | char name[FLEX_ARRAY]; /* attribute name */ |
d0bfd026 | 35 | }; |
7d42ec54 | 36 | |
ec4d77aa | 37 | const char *git_attr_name(const struct git_attr *attr) |
352404ac MH |
38 | { |
39 | return attr->name; | |
40 | } | |
41 | ||
1a600b75 BW |
42 | struct attr_hashmap { |
43 | struct hashmap map; | |
44 | #ifndef NO_PTHREADS | |
45 | pthread_mutex_t mutex; | |
46 | #endif | |
47 | }; | |
48 | ||
49 | static inline void hashmap_lock(struct attr_hashmap *map) | |
50 | { | |
51 | #ifndef NO_PTHREADS | |
52 | pthread_mutex_lock(&map->mutex); | |
53 | #endif | |
54 | } | |
55 | ||
56 | static inline void hashmap_unlock(struct attr_hashmap *map) | |
d0bfd026 | 57 | { |
1a600b75 BW |
58 | #ifndef NO_PTHREADS |
59 | pthread_mutex_unlock(&map->mutex); | |
60 | #endif | |
61 | } | |
d0bfd026 | 62 | |
1a600b75 BW |
63 | /* |
64 | * The global dictionary of all interned attributes. This | |
65 | * is a singleton object which is shared between threads. | |
66 | * Access to this dictionary must be surrounded with a mutex. | |
67 | */ | |
68 | static struct attr_hashmap g_attr_hashmap; | |
69 | ||
70 | /* The container for objects stored in "struct attr_hashmap" */ | |
71 | struct attr_hash_entry { | |
72 | struct hashmap_entry ent; /* must be the first member! */ | |
73 | const char *key; /* the key; memory should be owned by value */ | |
74 | size_t keylen; /* length of the key */ | |
75 | void *value; /* the stored value */ | |
76 | }; | |
77 | ||
78 | /* attr_hashmap comparison function */ | |
7663cdc8 SB |
79 | static int attr_hash_entry_cmp(void *unused_cmp_data, |
80 | const struct attr_hash_entry *a, | |
1a600b75 | 81 | const struct attr_hash_entry *b, |
7663cdc8 | 82 | void *unused_keydata) |
1a600b75 BW |
83 | { |
84 | return (a->keylen != b->keylen) || strncmp(a->key, b->key, a->keylen); | |
85 | } | |
86 | ||
87 | /* Initialize an 'attr_hashmap' object */ | |
88 | static void attr_hashmap_init(struct attr_hashmap *map) | |
89 | { | |
7663cdc8 | 90 | hashmap_init(&map->map, (hashmap_cmp_fn) attr_hash_entry_cmp, NULL, 0); |
1a600b75 BW |
91 | } |
92 | ||
93 | /* | |
94 | * Retrieve the 'value' stored in a hashmap given the provided 'key'. | |
95 | * If there is no matching entry, return NULL. | |
96 | */ | |
97 | static void *attr_hashmap_get(struct attr_hashmap *map, | |
98 | const char *key, size_t keylen) | |
99 | { | |
100 | struct attr_hash_entry k; | |
101 | struct attr_hash_entry *e; | |
102 | ||
103 | if (!map->map.tablesize) | |
104 | attr_hashmap_init(map); | |
105 | ||
106 | hashmap_entry_init(&k, memhash(key, keylen)); | |
107 | k.key = key; | |
108 | k.keylen = keylen; | |
109 | e = hashmap_get(&map->map, &k, NULL); | |
110 | ||
111 | return e ? e->value : NULL; | |
112 | } | |
113 | ||
114 | /* Add 'value' to a hashmap based on the provided 'key'. */ | |
115 | static void attr_hashmap_add(struct attr_hashmap *map, | |
116 | const char *key, size_t keylen, | |
117 | void *value) | |
118 | { | |
119 | struct attr_hash_entry *e; | |
120 | ||
121 | if (!map->map.tablesize) | |
122 | attr_hashmap_init(map); | |
123 | ||
124 | e = xmalloc(sizeof(struct attr_hash_entry)); | |
125 | hashmap_entry_init(e, memhash(key, keylen)); | |
126 | e->key = key; | |
127 | e->keylen = keylen; | |
128 | e->value = value; | |
129 | ||
130 | hashmap_add(&map->map, e); | |
d0bfd026 JH |
131 | } |
132 | ||
685b2925 BW |
133 | struct all_attrs_item { |
134 | const struct git_attr *attr; | |
135 | const char *value; | |
60a12722 BW |
136 | /* |
137 | * If 'macro' is non-NULL, indicates that 'attr' is a macro based on | |
138 | * the current attribute stack and contains a pointer to the match_attr | |
139 | * definition of the macro | |
140 | */ | |
141 | const struct match_attr *macro; | |
685b2925 BW |
142 | }; |
143 | ||
144 | /* | |
145 | * Reallocate and reinitialize the array of all attributes (which is used in | |
146 | * the attribute collection process) in 'check' based on the global dictionary | |
147 | * of attributes. | |
148 | */ | |
149 | static void all_attrs_init(struct attr_hashmap *map, struct attr_check *check) | |
150 | { | |
151 | int i; | |
152 | ||
153 | hashmap_lock(map); | |
154 | ||
155 | if (map->map.size < check->all_attrs_nr) | |
156 | die("BUG: interned attributes shouldn't be deleted"); | |
157 | ||
158 | /* | |
159 | * If the number of attributes in the global dictionary has increased | |
160 | * (or this attr_check instance doesn't have an initialized all_attrs | |
161 | * field), reallocate the provided attr_check instance's all_attrs | |
162 | * field and fill each entry with its corresponding git_attr. | |
163 | */ | |
164 | if (map->map.size != check->all_attrs_nr) { | |
165 | struct attr_hash_entry *e; | |
166 | struct hashmap_iter iter; | |
167 | hashmap_iter_init(&map->map, &iter); | |
168 | ||
169 | REALLOC_ARRAY(check->all_attrs, map->map.size); | |
170 | check->all_attrs_nr = map->map.size; | |
171 | ||
172 | while ((e = hashmap_iter_next(&iter))) { | |
173 | const struct git_attr *a = e->value; | |
174 | check->all_attrs[a->attr_nr].attr = a; | |
175 | } | |
176 | } | |
177 | ||
178 | hashmap_unlock(map); | |
179 | ||
180 | /* | |
181 | * Re-initialize every entry in check->all_attrs. | |
182 | * This re-initialization can live outside of the locked region since | |
183 | * the attribute dictionary is no longer being accessed. | |
184 | */ | |
185 | for (i = 0; i < check->all_attrs_nr; i++) { | |
186 | check->all_attrs[i].value = ATTR__UNKNOWN; | |
60a12722 | 187 | check->all_attrs[i].macro = NULL; |
685b2925 BW |
188 | } |
189 | } | |
190 | ||
428103c7 | 191 | static int attr_name_valid(const char *name, size_t namelen) |
e4aee10a JH |
192 | { |
193 | /* | |
d42453ab MH |
194 | * Attribute name cannot begin with '-' and must consist of |
195 | * characters from [-A-Za-z0-9_.]. | |
e4aee10a | 196 | */ |
c0b13b21 | 197 | if (namelen <= 0 || *name == '-') |
428103c7 | 198 | return 0; |
e4aee10a JH |
199 | while (namelen--) { |
200 | char ch = *name++; | |
201 | if (! (ch == '-' || ch == '.' || ch == '_' || | |
202 | ('0' <= ch && ch <= '9') || | |
203 | ('a' <= ch && ch <= 'z') || | |
204 | ('A' <= ch && ch <= 'Z')) ) | |
428103c7 | 205 | return 0; |
e4aee10a | 206 | } |
428103c7 JH |
207 | return 1; |
208 | } | |
209 | ||
210 | static void report_invalid_attr(const char *name, size_t len, | |
211 | const char *src, int lineno) | |
212 | { | |
213 | struct strbuf err = STRBUF_INIT; | |
214 | strbuf_addf(&err, _("%.*s is not a valid attribute name"), | |
215 | (int) len, name); | |
216 | fprintf(stderr, "%s: %s:%d\n", err.buf, src, lineno); | |
217 | strbuf_release(&err); | |
e4aee10a JH |
218 | } |
219 | ||
1a600b75 BW |
220 | /* |
221 | * Given a 'name', lookup and return the corresponding attribute in the global | |
222 | * dictionary. If no entry is found, create a new attribute and store it in | |
223 | * the dictionary. | |
224 | */ | |
e810e063 | 225 | static const struct git_attr *git_attr_internal(const char *name, int namelen) |
d0bfd026 | 226 | { |
d0bfd026 JH |
227 | struct git_attr *a; |
228 | ||
1a600b75 | 229 | if (!attr_name_valid(name, namelen)) |
e4aee10a JH |
230 | return NULL; |
231 | ||
1a600b75 BW |
232 | hashmap_lock(&g_attr_hashmap); |
233 | ||
234 | a = attr_hashmap_get(&g_attr_hashmap, name, namelen); | |
235 | ||
236 | if (!a) { | |
237 | FLEX_ALLOC_MEM(a, name, name, namelen); | |
238 | a->attr_nr = g_attr_hashmap.map.size; | |
1a600b75 BW |
239 | |
240 | attr_hashmap_add(&g_attr_hashmap, a->name, namelen, a); | |
241 | assert(a->attr_nr == (g_attr_hashmap.map.size - 1)); | |
1a600b75 BW |
242 | } |
243 | ||
244 | hashmap_unlock(&g_attr_hashmap); | |
f48fd688 | 245 | |
d0bfd026 JH |
246 | return a; |
247 | } | |
248 | ||
e810e063 | 249 | const struct git_attr *git_attr(const char *name) |
7fb0eaa2 JH |
250 | { |
251 | return git_attr_internal(name, strlen(name)); | |
252 | } | |
253 | ||
515106fa | 254 | /* What does a matched pattern decide? */ |
d0bfd026 | 255 | struct attr_state { |
e810e063 | 256 | const struct git_attr *attr; |
a5e92abd | 257 | const char *setto; |
d0bfd026 JH |
258 | }; |
259 | ||
82dce998 NTND |
260 | struct pattern { |
261 | const char *pattern; | |
262 | int patternlen; | |
263 | int nowildcardlen; | |
f8708998 | 264 | unsigned flags; /* EXC_FLAG_* */ |
82dce998 NTND |
265 | }; |
266 | ||
ba845b75 MH |
267 | /* |
268 | * One rule, as from a .gitattributes file. | |
269 | * | |
270 | * If is_macro is true, then u.attr is a pointer to the git_attr being | |
271 | * defined. | |
272 | * | |
4894f4ff JH |
273 | * If is_macro is false, then u.pat is the filename pattern to which the |
274 | * rule applies. | |
ba845b75 MH |
275 | * |
276 | * In either case, num_attr is the number of attributes affected by | |
277 | * this rule, and state is an array listing them. The attributes are | |
278 | * listed as they appear in the file (macros unexpanded). | |
279 | */ | |
d0bfd026 | 280 | struct match_attr { |
f48fd688 | 281 | union { |
82dce998 | 282 | struct pattern pat; |
e810e063 | 283 | const struct git_attr *attr; |
f48fd688 JH |
284 | } u; |
285 | char is_macro; | |
d0bfd026 JH |
286 | unsigned num_attr; |
287 | struct attr_state state[FLEX_ARRAY]; | |
288 | }; | |
289 | ||
290 | static const char blank[] = " \t\r\n"; | |
291 | ||
d1751298 MH |
292 | /* |
293 | * Parse a whitespace-delimited attribute state (i.e., "attr", | |
294 | * "-attr", "!attr", or "attr=value") from the string starting at src. | |
295 | * If e is not NULL, write the results to *e. Return a pointer to the | |
296 | * remainder of the string (with leading whitespace removed), or NULL | |
297 | * if there was an error. | |
298 | */ | |
515106fa | 299 | static const char *parse_attr(const char *src, int lineno, const char *cp, |
d1751298 | 300 | struct attr_state *e) |
515106fa JH |
301 | { |
302 | const char *ep, *equals; | |
303 | int len; | |
304 | ||
305 | ep = cp + strcspn(cp, blank); | |
306 | equals = strchr(cp, '='); | |
307 | if (equals && ep < equals) | |
308 | equals = NULL; | |
309 | if (equals) | |
310 | len = equals - cp; | |
311 | else | |
312 | len = ep - cp; | |
d1751298 | 313 | if (!e) { |
515106fa JH |
314 | if (*cp == '-' || *cp == '!') { |
315 | cp++; | |
316 | len--; | |
317 | } | |
428103c7 JH |
318 | if (!attr_name_valid(cp, len)) { |
319 | report_invalid_attr(cp, len, src, lineno); | |
515106fa JH |
320 | return NULL; |
321 | } | |
322 | } else { | |
5a884019 JH |
323 | /* |
324 | * As this function is always called twice, once with | |
325 | * e == NULL in the first pass and then e != NULL in | |
428103c7 | 326 | * the second pass, no need for attr_name_valid() |
5a884019 JH |
327 | * check here. |
328 | */ | |
515106fa JH |
329 | if (*cp == '-' || *cp == '!') { |
330 | e->setto = (*cp == '-') ? ATTR__FALSE : ATTR__UNSET; | |
331 | cp++; | |
332 | len--; | |
333 | } | |
334 | else if (!equals) | |
335 | e->setto = ATTR__TRUE; | |
336 | else { | |
182af834 | 337 | e->setto = xmemdupz(equals + 1, ep - equals - 1); |
515106fa | 338 | } |
7fb0eaa2 | 339 | e->attr = git_attr_internal(cp, len); |
515106fa | 340 | } |
515106fa JH |
341 | return ep + strspn(ep, blank); |
342 | } | |
343 | ||
f48fd688 JH |
344 | static struct match_attr *parse_attr_line(const char *line, const char *src, |
345 | int lineno, int macro_ok) | |
d0bfd026 JH |
346 | { |
347 | int namelen; | |
d68e1c18 | 348 | int num_attr, i; |
85c4a0d0 | 349 | const char *cp, *name, *states; |
515106fa | 350 | struct match_attr *res = NULL; |
f48fd688 | 351 | int is_macro; |
860a74d9 | 352 | struct strbuf pattern = STRBUF_INIT; |
d0bfd026 JH |
353 | |
354 | cp = line + strspn(line, blank); | |
355 | if (!*cp || *cp == '#') | |
356 | return NULL; | |
357 | name = cp; | |
860a74d9 NTND |
358 | |
359 | if (*cp == '"' && !unquote_c_style(&pattern, name, &states)) { | |
360 | name = pattern.buf; | |
361 | namelen = pattern.len; | |
362 | } else { | |
363 | namelen = strcspn(name, blank); | |
364 | states = name + namelen; | |
365 | } | |
366 | ||
f48fd688 | 367 | if (strlen(ATTRIBUTE_MACRO_PREFIX) < namelen && |
59556548 | 368 | starts_with(name, ATTRIBUTE_MACRO_PREFIX)) { |
f48fd688 JH |
369 | if (!macro_ok) { |
370 | fprintf(stderr, "%s not allowed: %s:%d\n", | |
371 | name, src, lineno); | |
62af8969 | 372 | goto fail_return; |
f48fd688 JH |
373 | } |
374 | is_macro = 1; | |
375 | name += strlen(ATTRIBUTE_MACRO_PREFIX); | |
376 | name += strspn(name, blank); | |
377 | namelen = strcspn(name, blank); | |
428103c7 JH |
378 | if (!attr_name_valid(name, namelen)) { |
379 | report_invalid_attr(name, namelen, src, lineno); | |
62af8969 | 380 | goto fail_return; |
e4aee10a | 381 | } |
f48fd688 JH |
382 | } |
383 | else | |
384 | is_macro = 0; | |
d0bfd026 | 385 | |
85c4a0d0 MH |
386 | states += strspn(states, blank); |
387 | ||
d68e1c18 MH |
388 | /* First pass to count the attr_states */ |
389 | for (cp = states, num_attr = 0; *cp; num_attr++) { | |
390 | cp = parse_attr(src, lineno, cp, NULL); | |
391 | if (!cp) | |
62af8969 | 392 | goto fail_return; |
d0bfd026 | 393 | } |
d68e1c18 MH |
394 | |
395 | res = xcalloc(1, | |
396 | sizeof(*res) + | |
397 | sizeof(struct attr_state) * num_attr + | |
398 | (is_macro ? 0 : namelen + 1)); | |
fad32bcd | 399 | if (is_macro) { |
d68e1c18 | 400 | res->u.attr = git_attr_internal(name, namelen); |
fad32bcd | 401 | } else { |
82dce998 NTND |
402 | char *p = (char *)&(res->state[num_attr]); |
403 | memcpy(p, name, namelen); | |
404 | res->u.pat.pattern = p; | |
405 | parse_exclude_pattern(&res->u.pat.pattern, | |
406 | &res->u.pat.patternlen, | |
407 | &res->u.pat.flags, | |
408 | &res->u.pat.nowildcardlen); | |
8b1bd024 TR |
409 | if (res->u.pat.flags & EXC_FLAG_NEGATIVE) { |
410 | warning(_("Negative patterns are ignored in git attributes\n" | |
411 | "Use '\\!' for literal leading exclamation.")); | |
62af8969 | 412 | goto fail_return; |
8b1bd024 | 413 | } |
d0bfd026 | 414 | } |
d68e1c18 MH |
415 | res->is_macro = is_macro; |
416 | res->num_attr = num_attr; | |
417 | ||
418 | /* Second pass to fill the attr_states */ | |
419 | for (cp = states, i = 0; *cp; i++) { | |
420 | cp = parse_attr(src, lineno, cp, &(res->state[i])); | |
421 | } | |
422 | ||
860a74d9 | 423 | strbuf_release(&pattern); |
d0bfd026 | 424 | return res; |
62af8969 JH |
425 | |
426 | fail_return: | |
860a74d9 | 427 | strbuf_release(&pattern); |
62af8969 JH |
428 | free(res); |
429 | return NULL; | |
d0bfd026 JH |
430 | } |
431 | ||
432 | /* | |
433 | * Like info/exclude and .gitignore, the attribute information can | |
434 | * come from many places. | |
435 | * | |
436 | * (1) .gitattribute file of the same directory; | |
515106fa JH |
437 | * (2) .gitattribute file of the parent directory if (1) does not have |
438 | * any match; this goes recursively upwards, just like .gitignore. | |
439 | * (3) $GIT_DIR/info/attributes, which overrides both of the above. | |
d0bfd026 JH |
440 | * |
441 | * In the same file, later entries override the earlier match, so in the | |
442 | * global list, we would have entries from info/attributes the earliest | |
443 | * (reading the file from top to bottom), .gitattribute of the root | |
444 | * directory (again, reading the file from top to bottom) down to the | |
445 | * current directory, and then scan the list backwards to find the first match. | |
6d24e7a8 | 446 | * This is exactly the same as what is_excluded() does in dir.c to deal with |
6f416cba | 447 | * .gitignore file and info/excludes file as a fallback. |
d0bfd026 JH |
448 | */ |
449 | ||
dc81cf37 | 450 | struct attr_stack { |
d0bfd026 JH |
451 | struct attr_stack *prev; |
452 | char *origin; | |
cd6a0b26 | 453 | size_t originlen; |
d0bfd026 | 454 | unsigned num_matches; |
a4413118 | 455 | unsigned alloc; |
d0bfd026 | 456 | struct match_attr **attrs; |
dc81cf37 | 457 | }; |
d0bfd026 | 458 | |
dc81cf37 | 459 | static void attr_stack_free(struct attr_stack *e) |
d0bfd026 JH |
460 | { |
461 | int i; | |
462 | free(e->origin); | |
515106fa JH |
463 | for (i = 0; i < e->num_matches; i++) { |
464 | struct match_attr *a = e->attrs[i]; | |
465 | int j; | |
466 | for (j = 0; j < a->num_attr; j++) { | |
a5e92abd | 467 | const char *setto = a->state[j].setto; |
515106fa JH |
468 | if (setto == ATTR__TRUE || |
469 | setto == ATTR__FALSE || | |
470 | setto == ATTR__UNSET || | |
471 | setto == ATTR__UNKNOWN) | |
472 | ; | |
473 | else | |
4b25d091 | 474 | free((char *) setto); |
515106fa JH |
475 | } |
476 | free(a); | |
477 | } | |
37475f97 | 478 | free(e->attrs); |
d0bfd026 JH |
479 | free(e); |
480 | } | |
481 | ||
dc81cf37 BW |
482 | static void drop_attr_stack(struct attr_stack **stack) |
483 | { | |
484 | while (*stack) { | |
485 | struct attr_stack *elem = *stack; | |
486 | *stack = elem->prev; | |
487 | attr_stack_free(elem); | |
488 | } | |
489 | } | |
490 | ||
491 | /* List of all attr_check structs; access should be surrounded by mutex */ | |
492 | static struct check_vector { | |
493 | size_t nr; | |
494 | size_t alloc; | |
495 | struct attr_check **checks; | |
496 | #ifndef NO_PTHREADS | |
497 | pthread_mutex_t mutex; | |
498 | #endif | |
499 | } check_vector; | |
500 | ||
501 | static inline void vector_lock(void) | |
502 | { | |
503 | #ifndef NO_PTHREADS | |
504 | pthread_mutex_lock(&check_vector.mutex); | |
505 | #endif | |
506 | } | |
507 | ||
508 | static inline void vector_unlock(void) | |
509 | { | |
510 | #ifndef NO_PTHREADS | |
511 | pthread_mutex_unlock(&check_vector.mutex); | |
512 | #endif | |
513 | } | |
514 | ||
515 | static void check_vector_add(struct attr_check *c) | |
516 | { | |
517 | vector_lock(); | |
518 | ||
519 | ALLOC_GROW(check_vector.checks, | |
520 | check_vector.nr + 1, | |
521 | check_vector.alloc); | |
522 | check_vector.checks[check_vector.nr++] = c; | |
523 | ||
524 | vector_unlock(); | |
525 | } | |
526 | ||
527 | static void check_vector_remove(struct attr_check *check) | |
528 | { | |
529 | int i; | |
530 | ||
531 | vector_lock(); | |
532 | ||
533 | /* Find entry */ | |
534 | for (i = 0; i < check_vector.nr; i++) | |
535 | if (check_vector.checks[i] == check) | |
536 | break; | |
537 | ||
538 | if (i >= check_vector.nr) | |
539 | die("BUG: no entry found"); | |
540 | ||
541 | /* shift entries over */ | |
542 | for (; i < check_vector.nr - 1; i++) | |
543 | check_vector.checks[i] = check_vector.checks[i + 1]; | |
544 | ||
545 | check_vector.nr--; | |
546 | ||
547 | vector_unlock(); | |
548 | } | |
549 | ||
550 | /* Iterate through all attr_check instances and drop their stacks */ | |
551 | static void drop_all_attr_stacks(void) | |
552 | { | |
553 | int i; | |
554 | ||
555 | vector_lock(); | |
556 | ||
557 | for (i = 0; i < check_vector.nr; i++) { | |
558 | drop_attr_stack(&check_vector.checks[i]->stack); | |
559 | } | |
560 | ||
561 | vector_unlock(); | |
562 | } | |
563 | ||
37293768 JH |
564 | struct attr_check *attr_check_alloc(void) |
565 | { | |
dc81cf37 BW |
566 | struct attr_check *c = xcalloc(1, sizeof(struct attr_check)); |
567 | ||
568 | /* save pointer to the check struct */ | |
569 | check_vector_add(c); | |
570 | ||
571 | return c; | |
37293768 JH |
572 | } |
573 | ||
574 | struct attr_check *attr_check_initl(const char *one, ...) | |
575 | { | |
576 | struct attr_check *check; | |
577 | int cnt; | |
578 | va_list params; | |
579 | const char *param; | |
580 | ||
581 | va_start(params, one); | |
582 | for (cnt = 1; (param = va_arg(params, const char *)) != NULL; cnt++) | |
583 | ; | |
584 | va_end(params); | |
585 | ||
586 | check = attr_check_alloc(); | |
587 | check->nr = cnt; | |
588 | check->alloc = cnt; | |
589 | check->items = xcalloc(cnt, sizeof(struct attr_check_item)); | |
590 | ||
591 | check->items[0].attr = git_attr(one); | |
592 | va_start(params, one); | |
593 | for (cnt = 1; cnt < check->nr; cnt++) { | |
594 | const struct git_attr *attr; | |
595 | param = va_arg(params, const char *); | |
596 | if (!param) | |
597 | die("BUG: counted %d != ended at %d", | |
598 | check->nr, cnt); | |
599 | attr = git_attr(param); | |
600 | if (!attr) | |
601 | die("BUG: %s: not a valid attribute name", param); | |
602 | check->items[cnt].attr = attr; | |
603 | } | |
604 | va_end(params); | |
605 | return check; | |
606 | } | |
607 | ||
b0db7046 BW |
608 | struct attr_check *attr_check_dup(const struct attr_check *check) |
609 | { | |
610 | struct attr_check *ret; | |
611 | ||
612 | if (!check) | |
613 | return NULL; | |
614 | ||
615 | ret = attr_check_alloc(); | |
616 | ||
617 | ret->nr = check->nr; | |
618 | ret->alloc = check->alloc; | |
619 | ALLOC_ARRAY(ret->items, ret->nr); | |
620 | COPY_ARRAY(ret->items, check->items, ret->nr); | |
621 | ||
622 | return ret; | |
623 | } | |
624 | ||
37293768 JH |
625 | struct attr_check_item *attr_check_append(struct attr_check *check, |
626 | const struct git_attr *attr) | |
627 | { | |
628 | struct attr_check_item *item; | |
629 | ||
630 | ALLOC_GROW(check->items, check->nr + 1, check->alloc); | |
631 | item = &check->items[check->nr++]; | |
632 | item->attr = attr; | |
633 | return item; | |
634 | } | |
635 | ||
636 | void attr_check_reset(struct attr_check *check) | |
637 | { | |
638 | check->nr = 0; | |
639 | } | |
640 | ||
641 | void attr_check_clear(struct attr_check *check) | |
642 | { | |
6a83d902 | 643 | FREE_AND_NULL(check->items); |
37293768 JH |
644 | check->alloc = 0; |
645 | check->nr = 0; | |
685b2925 | 646 | |
6a83d902 | 647 | FREE_AND_NULL(check->all_attrs); |
685b2925 | 648 | check->all_attrs_nr = 0; |
dc81cf37 BW |
649 | |
650 | drop_attr_stack(&check->stack); | |
37293768 JH |
651 | } |
652 | ||
653 | void attr_check_free(struct attr_check *check) | |
654 | { | |
dc81cf37 BW |
655 | if (check) { |
656 | /* Remove check from the check vector */ | |
657 | check_vector_remove(check); | |
658 | ||
659 | attr_check_clear(check); | |
660 | free(check); | |
661 | } | |
37293768 JH |
662 | } |
663 | ||
d0bfd026 | 664 | static const char *builtin_attr[] = { |
155a4b71 | 665 | "[attr]binary -diff -merge -text", |
d0bfd026 JH |
666 | NULL, |
667 | }; | |
668 | ||
a4413118 JH |
669 | static void handle_attr_line(struct attr_stack *res, |
670 | const char *line, | |
671 | const char *src, | |
672 | int lineno, | |
673 | int macro_ok) | |
674 | { | |
675 | struct match_attr *a; | |
676 | ||
677 | a = parse_attr_line(line, src, lineno, macro_ok); | |
678 | if (!a) | |
679 | return; | |
3a7fa03d | 680 | ALLOC_GROW(res->attrs, res->num_matches + 1, res->alloc); |
a4413118 JH |
681 | res->attrs[res->num_matches++] = a; |
682 | } | |
683 | ||
d0bfd026 JH |
684 | static struct attr_stack *read_attr_from_array(const char **list) |
685 | { | |
686 | struct attr_stack *res; | |
687 | const char *line; | |
f48fd688 | 688 | int lineno = 0; |
d0bfd026 JH |
689 | |
690 | res = xcalloc(1, sizeof(*res)); | |
a4413118 JH |
691 | while ((line = *(list++)) != NULL) |
692 | handle_attr_line(res, line, "[builtin]", ++lineno, 1); | |
d0bfd026 JH |
693 | return res; |
694 | } | |
695 | ||
7d42ec54 | 696 | /* |
f0dd0421 BW |
697 | * Callers into the attribute system assume there is a single, system-wide |
698 | * global state where attributes are read from and when the state is flipped by | |
699 | * calling git_attr_set_direction(), the stack frames that have been | |
700 | * constructed need to be discarded so so that subsequent calls into the | |
701 | * attribute system will lazily read from the right place. Since changing | |
702 | * direction causes a global paradigm shift, it should not ever be called while | |
703 | * another thread could potentially be calling into the attribute system. | |
7d42ec54 | 704 | */ |
06f33c17 JH |
705 | static enum git_attr_direction direction; |
706 | static struct index_state *use_index; | |
707 | ||
f0dd0421 BW |
708 | void git_attr_set_direction(enum git_attr_direction new_direction, |
709 | struct index_state *istate) | |
710 | { | |
711 | if (is_bare_repository() && new_direction != GIT_ATTR_INDEX) | |
712 | die("BUG: non-INDEX attr direction in a bare repo"); | |
713 | ||
714 | if (new_direction != direction) | |
715 | drop_all_attr_stacks(); | |
716 | ||
717 | direction = new_direction; | |
718 | use_index = istate; | |
719 | } | |
720 | ||
f48fd688 | 721 | static struct attr_stack *read_attr_from_file(const char *path, int macro_ok) |
d0bfd026 | 722 | { |
e9d983f1 | 723 | FILE *fp = fopen_or_warn(path, "r"); |
d0bfd026 JH |
724 | struct attr_stack *res; |
725 | char buf[2048]; | |
f48fd688 | 726 | int lineno = 0; |
d0bfd026 | 727 | |
e9d983f1 | 728 | if (!fp) |
a4413118 JH |
729 | return NULL; |
730 | res = xcalloc(1, sizeof(*res)); | |
27547e5f JH |
731 | while (fgets(buf, sizeof(buf), fp)) { |
732 | char *bufp = buf; | |
733 | if (!lineno) | |
734 | skip_utf8_bom(&bufp, strlen(bufp)); | |
735 | handle_attr_line(res, bufp, path, ++lineno, macro_ok); | |
736 | } | |
a4413118 JH |
737 | fclose(fp); |
738 | return res; | |
739 | } | |
d0bfd026 | 740 | |
06f33c17 | 741 | static struct attr_stack *read_attr_from_index(const char *path, int macro_ok) |
a4413118 JH |
742 | { |
743 | struct attr_stack *res; | |
1a9d7e9b JH |
744 | char *buf, *sp; |
745 | int lineno = 0; | |
f48fd688 | 746 | |
ff366825 | 747 | buf = read_blob_data_from_index(use_index ? use_index : &the_index, path, NULL); |
1a9d7e9b | 748 | if (!buf) |
06f33c17 | 749 | return NULL; |
1a9d7e9b | 750 | |
06f33c17 | 751 | res = xcalloc(1, sizeof(*res)); |
1a9d7e9b JH |
752 | for (sp = buf; *sp; ) { |
753 | char *ep; | |
754 | int more; | |
263434f2 JH |
755 | |
756 | ep = strchrnul(sp, '\n'); | |
1a9d7e9b JH |
757 | more = (*ep == '\n'); |
758 | *ep = '\0'; | |
759 | handle_attr_line(res, sp, path, ++lineno, macro_ok); | |
760 | sp = ep + more; | |
761 | } | |
762 | free(buf); | |
d0bfd026 JH |
763 | return res; |
764 | } | |
765 | ||
06f33c17 JH |
766 | static struct attr_stack *read_attr(const char *path, int macro_ok) |
767 | { | |
0787dafd | 768 | struct attr_stack *res = NULL; |
06f33c17 | 769 | |
0787dafd | 770 | if (direction == GIT_ATTR_INDEX) { |
06f33c17 | 771 | res = read_attr_from_index(path, macro_ok); |
0787dafd BW |
772 | } else if (!is_bare_repository()) { |
773 | if (direction == GIT_ATTR_CHECKOUT) { | |
06f33c17 | 774 | res = read_attr_from_index(path, macro_ok); |
0787dafd BW |
775 | if (!res) |
776 | res = read_attr_from_file(path, macro_ok); | |
777 | } else if (direction == GIT_ATTR_CHECKIN) { | |
778 | res = read_attr_from_file(path, macro_ok); | |
779 | if (!res) | |
780 | /* | |
781 | * There is no checked out .gitattributes file | |
782 | * there, but we might have it in the index. | |
783 | * We allow operation in a sparsely checked out | |
784 | * work tree, so read from it. | |
785 | */ | |
786 | res = read_attr_from_index(path, macro_ok); | |
787 | } | |
06f33c17 | 788 | } |
0787dafd | 789 | |
06f33c17 JH |
790 | if (!res) |
791 | res = xcalloc(1, sizeof(*res)); | |
792 | return res; | |
793 | } | |
794 | ||
d0bfd026 JH |
795 | #if DEBUG_ATTR |
796 | static void debug_info(const char *what, struct attr_stack *elem) | |
797 | { | |
798 | fprintf(stderr, "%s: %s\n", what, elem->origin ? elem->origin : "()"); | |
799 | } | |
cf94ccda | 800 | static void debug_set(const char *what, const char *match, struct git_attr *attr, const void *v) |
f48fd688 | 801 | { |
515106fa JH |
802 | const char *value = v; |
803 | ||
804 | if (ATTR_TRUE(value)) | |
805 | value = "set"; | |
806 | else if (ATTR_FALSE(value)) | |
807 | value = "unset"; | |
808 | else if (ATTR_UNSET(value)) | |
809 | value = "unspecified"; | |
810 | ||
811 | fprintf(stderr, "%s: %s => %s (%s)\n", | |
812 | what, attr->name, (char *) value, match); | |
f48fd688 | 813 | } |
d0bfd026 JH |
814 | #define debug_push(a) debug_info("push", (a)) |
815 | #define debug_pop(a) debug_info("pop", (a)) | |
816 | #else | |
817 | #define debug_push(a) do { ; } while (0) | |
818 | #define debug_pop(a) do { ; } while (0) | |
f48fd688 | 819 | #define debug_set(a,b,c,d) do { ; } while (0) |
034d35c9 | 820 | #endif /* DEBUG_ATTR */ |
d0bfd026 | 821 | |
c5147722 | 822 | static const char *git_etc_gitattributes(void) |
6df42ab9 PO |
823 | { |
824 | static const char *system_wide; | |
825 | if (!system_wide) | |
826 | system_wide = system_path(ETC_GITATTRIBUTES); | |
827 | return system_wide; | |
828 | } | |
829 | ||
dc81cf37 BW |
830 | static const char *get_home_gitattributes(void) |
831 | { | |
832 | if (!git_attributes_file) | |
833 | git_attributes_file = xdg_config_home("attributes"); | |
834 | ||
835 | return git_attributes_file; | |
836 | } | |
837 | ||
c5147722 | 838 | static int git_attr_system(void) |
6df42ab9 PO |
839 | { |
840 | return !git_env_bool("GIT_ATTR_NOSYSTEM", 0); | |
841 | } | |
842 | ||
f932729c JK |
843 | static GIT_PATH_FUNC(git_path_info_attributes, INFOATTRIBUTES_FILE) |
844 | ||
4c0ce074 JH |
845 | static void push_stack(struct attr_stack **attr_stack_p, |
846 | struct attr_stack *elem, char *origin, size_t originlen) | |
847 | { | |
848 | if (elem) { | |
849 | elem->origin = origin; | |
850 | if (origin) | |
851 | elem->originlen = originlen; | |
852 | elem->prev = *attr_stack_p; | |
853 | *attr_stack_p = elem; | |
854 | } | |
855 | } | |
856 | ||
dc81cf37 | 857 | static void bootstrap_attr_stack(struct attr_stack **stack) |
f48fd688 | 858 | { |
dc81cf37 | 859 | struct attr_stack *e; |
f48fd688 | 860 | |
dc81cf37 | 861 | if (*stack) |
909ca7b9 | 862 | return; |
f48fd688 | 863 | |
dc81cf37 BW |
864 | /* builtin frame */ |
865 | e = read_attr_from_array(builtin_attr); | |
866 | push_stack(stack, e, NULL, 0); | |
6df42ab9 | 867 | |
dc81cf37 BW |
868 | /* system-wide frame */ |
869 | if (git_attr_system()) { | |
870 | e = read_attr_from_file(git_etc_gitattributes(), 1); | |
871 | push_stack(stack, e, NULL, 0); | |
872 | } | |
f48fd688 | 873 | |
dc81cf37 BW |
874 | /* home directory */ |
875 | if (get_home_gitattributes()) { | |
876 | e = read_attr_from_file(get_home_gitattributes(), 1); | |
877 | push_stack(stack, e, NULL, 0); | |
f48fd688 | 878 | } |
909ca7b9 | 879 | |
dc81cf37 | 880 | /* root directory */ |
0787dafd | 881 | e = read_attr(GITATTRIBUTES_FILE, 1); |
dc81cf37 | 882 | push_stack(stack, e, xstrdup(""), 0); |
f0056f64 | 883 | |
dc81cf37 BW |
884 | /* info frame */ |
885 | if (startup_info->have_repository) | |
886 | e = read_attr_from_file(git_path_info_attributes(), 1); | |
887 | else | |
888 | e = NULL; | |
889 | if (!e) | |
890 | e = xcalloc(1, sizeof(struct attr_stack)); | |
891 | push_stack(stack, e, NULL, 0); | |
f48fd688 JH |
892 | } |
893 | ||
dc81cf37 BW |
894 | static void prepare_attr_stack(const char *path, int dirlen, |
895 | struct attr_stack **stack) | |
d0bfd026 | 896 | { |
dc81cf37 | 897 | struct attr_stack *info; |
0787dafd | 898 | struct strbuf pathbuf = STRBUF_INIT; |
a8727017 | 899 | |
d0bfd026 JH |
900 | /* |
901 | * At the bottom of the attribute stack is the built-in | |
6df42ab9 PO |
902 | * set of attribute definitions, followed by the contents |
903 | * of $(prefix)/etc/gitattributes and a file specified by | |
904 | * core.attributesfile. Then, contents from | |
d0bfd026 JH |
905 | * .gitattribute files from directories closer to the |
906 | * root to the ones in deeper directories are pushed | |
907 | * to the stack. Finally, at the very top of the stack | |
908 | * we always keep the contents of $GIT_DIR/info/attributes. | |
909 | * | |
910 | * When checking, we use entries from near the top of the | |
911 | * stack, preferring $GIT_DIR/info/attributes, then | |
912 | * .gitattributes in deeper directories to shallower ones, | |
913 | * and finally use the built-in set as the default. | |
914 | */ | |
dc81cf37 | 915 | bootstrap_attr_stack(stack); |
d0bfd026 JH |
916 | |
917 | /* | |
918 | * Pop the "info" one that is always at the top of the stack. | |
919 | */ | |
dc81cf37 BW |
920 | info = *stack; |
921 | *stack = info->prev; | |
d0bfd026 JH |
922 | |
923 | /* | |
924 | * Pop the ones from directories that are not the prefix of | |
c432ef99 JH |
925 | * the path we are checking. Break out of the loop when we see |
926 | * the root one (whose origin is an empty string "") or the builtin | |
927 | * one (whose origin is NULL) without popping it. | |
d0bfd026 | 928 | */ |
dc81cf37 BW |
929 | while ((*stack)->origin) { |
930 | int namelen = (*stack)->originlen; | |
931 | struct attr_stack *elem; | |
d0bfd026 | 932 | |
dc81cf37 | 933 | elem = *stack; |
d0bfd026 | 934 | if (namelen <= dirlen && |
1afca444 JK |
935 | !strncmp(elem->origin, path, namelen) && |
936 | (!namelen || path[namelen] == '/')) | |
d0bfd026 JH |
937 | break; |
938 | ||
939 | debug_pop(elem); | |
dc81cf37 BW |
940 | *stack = elem->prev; |
941 | attr_stack_free(elem); | |
d0bfd026 JH |
942 | } |
943 | ||
944 | /* | |
0787dafd BW |
945 | * bootstrap_attr_stack() should have added, and the |
946 | * above loop should have stopped before popping, the | |
947 | * root element whose attr_stack->origin is set to an | |
948 | * empty string. | |
d0bfd026 | 949 | */ |
0787dafd BW |
950 | assert((*stack)->origin); |
951 | ||
952 | strbuf_addstr(&pathbuf, (*stack)->origin); | |
953 | /* Build up to the directory 'path' is in */ | |
954 | while (pathbuf.len < dirlen) { | |
955 | size_t len = pathbuf.len; | |
956 | struct attr_stack *next; | |
957 | char *origin; | |
958 | ||
959 | /* Skip path-separator */ | |
960 | if (len < dirlen && is_dir_sep(path[len])) | |
961 | len++; | |
962 | /* Find the end of the next component */ | |
963 | while (len < dirlen && !is_dir_sep(path[len])) | |
964 | len++; | |
965 | ||
966 | if (pathbuf.len > 0) | |
967 | strbuf_addch(&pathbuf, '/'); | |
968 | strbuf_add(&pathbuf, path + pathbuf.len, (len - pathbuf.len)); | |
969 | strbuf_addf(&pathbuf, "/%s", GITATTRIBUTES_FILE); | |
970 | ||
971 | next = read_attr(pathbuf.buf, 0); | |
972 | ||
973 | /* reset the pathbuf to not include "/.gitattributes" */ | |
974 | strbuf_setlen(&pathbuf, len); | |
975 | ||
976 | origin = xstrdup(pathbuf.buf); | |
977 | push_stack(stack, next, origin, len); | |
97410b27 | 978 | } |
d4c98565 | 979 | |
d0bfd026 JH |
980 | /* |
981 | * Finally push the "info" one at the top of the stack. | |
982 | */ | |
dc81cf37 | 983 | push_stack(stack, info, NULL, 0); |
0787dafd BW |
984 | |
985 | strbuf_release(&pathbuf); | |
d0bfd026 JH |
986 | } |
987 | ||
988 | static int path_matches(const char *pathname, int pathlen, | |
bd2f371d | 989 | int basename_offset, |
82dce998 | 990 | const struct pattern *pat, |
d0bfd026 JH |
991 | const char *base, int baselen) |
992 | { | |
82dce998 NTND |
993 | const char *pattern = pat->pattern; |
994 | int prefix = pat->nowildcardlen; | |
dc09e9ec | 995 | int isdir = (pathlen && pathname[pathlen - 1] == '/'); |
82dce998 | 996 | |
dc09e9ec | 997 | if ((pat->flags & EXC_FLAG_MUSTBEDIR) && !isdir) |
94bc671a JNA |
998 | return 0; |
999 | ||
82dce998 | 1000 | if (pat->flags & EXC_FLAG_NODIR) { |
bd2f371d | 1001 | return match_basename(pathname + basename_offset, |
dc09e9ec | 1002 | pathlen - basename_offset - isdir, |
82dce998 NTND |
1003 | pattern, prefix, |
1004 | pat->patternlen, pat->flags); | |
d0bfd026 | 1005 | } |
dc09e9ec | 1006 | return match_pathname(pathname, pathlen - isdir, |
82dce998 NTND |
1007 | base, baselen, |
1008 | pattern, prefix, pat->patternlen, pat->flags); | |
d0bfd026 JH |
1009 | } |
1010 | ||
685b2925 | 1011 | static int macroexpand_one(struct all_attrs_item *all_attrs, int nr, int rem); |
ec775c41 | 1012 | |
685b2925 | 1013 | static int fill_one(const char *what, struct all_attrs_item *all_attrs, |
60a12722 | 1014 | const struct match_attr *a, int rem) |
515106fa | 1015 | { |
515106fa JH |
1016 | int i; |
1017 | ||
685b2925 | 1018 | for (i = a->num_attr - 1; rem > 0 && i >= 0; i--) { |
e810e063 | 1019 | const struct git_attr *attr = a->state[i].attr; |
685b2925 | 1020 | const char **n = &(all_attrs[attr->attr_nr].value); |
a5e92abd | 1021 | const char *v = a->state[i].setto; |
515106fa JH |
1022 | |
1023 | if (*n == ATTR__UNKNOWN) { | |
426c27b7 | 1024 | debug_set(what, |
712efb1a | 1025 | a->is_macro ? a->u.attr->name : a->u.pat.pattern, |
426c27b7 | 1026 | attr, v); |
515106fa JH |
1027 | *n = v; |
1028 | rem--; | |
685b2925 | 1029 | rem = macroexpand_one(all_attrs, attr->attr_nr, rem); |
515106fa JH |
1030 | } |
1031 | } | |
1032 | return rem; | |
1033 | } | |
1034 | ||
bd2f371d | 1035 | static int fill(const char *path, int pathlen, int basename_offset, |
dc81cf37 BW |
1036 | const struct attr_stack *stack, |
1037 | struct all_attrs_item *all_attrs, int rem) | |
d0bfd026 | 1038 | { |
dc81cf37 BW |
1039 | for (; rem > 0 && stack; stack = stack->prev) { |
1040 | int i; | |
1041 | const char *base = stack->origin ? stack->origin : ""; | |
1042 | ||
1043 | for (i = stack->num_matches - 1; 0 < rem && 0 <= i; i--) { | |
1044 | const struct match_attr *a = stack->attrs[i]; | |
1045 | if (a->is_macro) | |
1046 | continue; | |
1047 | if (path_matches(path, pathlen, basename_offset, | |
1048 | &a->u.pat, base, stack->originlen)) | |
1049 | rem = fill_one("fill", all_attrs, a, rem); | |
1050 | } | |
d0bfd026 | 1051 | } |
dc81cf37 | 1052 | |
d0bfd026 JH |
1053 | return rem; |
1054 | } | |
1055 | ||
685b2925 | 1056 | static int macroexpand_one(struct all_attrs_item *all_attrs, int nr, int rem) |
f48fd688 | 1057 | { |
60a12722 | 1058 | const struct all_attrs_item *item = &all_attrs[nr]; |
f48fd688 | 1059 | |
60a12722 BW |
1060 | if (item->macro && item->value == ATTR__TRUE) |
1061 | return fill_one("expand", all_attrs, item->macro, rem); | |
1062 | else | |
ec775c41 | 1063 | return rem; |
60a12722 | 1064 | } |
ec775c41 | 1065 | |
60a12722 BW |
1066 | /* |
1067 | * Marks the attributes which are macros based on the attribute stack. | |
1068 | * This prevents having to search through the attribute stack each time | |
1069 | * a macro needs to be expanded during the fill stage. | |
1070 | */ | |
1071 | static void determine_macros(struct all_attrs_item *all_attrs, | |
1072 | const struct attr_stack *stack) | |
1073 | { | |
1074 | for (; stack; stack = stack->prev) { | |
1075 | int i; | |
1076 | for (i = stack->num_matches - 1; i >= 0; i--) { | |
1077 | const struct match_attr *ma = stack->attrs[i]; | |
1078 | if (ma->is_macro) { | |
1079 | int n = ma->u.attr->attr_nr; | |
1080 | if (!all_attrs[n].macro) { | |
1081 | all_attrs[n].macro = ma; | |
1082 | } | |
1083 | } | |
ec775c41 | 1084 | } |
4b0c6961 | 1085 | } |
f48fd688 JH |
1086 | } |
1087 | ||
2d721744 | 1088 | /* |
685b2925 BW |
1089 | * Collect attributes for path into the array pointed to by check->all_attrs. |
1090 | * If check->check_nr is non-zero, only attributes in check[] are collected. | |
1091 | * Otherwise all attributes are collected. | |
2d721744 | 1092 | */ |
6bc2e3f7 | 1093 | static void collect_some_attrs(const char *path, struct attr_check *check) |
d0bfd026 | 1094 | { |
9db9eecf | 1095 | int i, pathlen, rem, dirlen; |
bd2f371d JH |
1096 | const char *cp, *last_slash = NULL; |
1097 | int basename_offset; | |
9db9eecf NTND |
1098 | |
1099 | for (cp = path; *cp; cp++) { | |
1100 | if (*cp == '/' && cp[1]) | |
1101 | last_slash = cp; | |
1102 | } | |
1103 | pathlen = cp - path; | |
1104 | if (last_slash) { | |
bd2f371d | 1105 | basename_offset = last_slash + 1 - path; |
9db9eecf NTND |
1106 | dirlen = last_slash - path; |
1107 | } else { | |
bd2f371d | 1108 | basename_offset = 0; |
9db9eecf NTND |
1109 | dirlen = 0; |
1110 | } | |
d0bfd026 | 1111 | |
dc81cf37 | 1112 | prepare_attr_stack(path, dirlen, &check->stack); |
685b2925 | 1113 | all_attrs_init(&g_attr_hashmap, check); |
dc81cf37 | 1114 | determine_macros(check->all_attrs, check->stack); |
685b2925 | 1115 | |
60a12722 | 1116 | if (check->nr) { |
06a604e6 | 1117 | rem = 0; |
6bc2e3f7 | 1118 | for (i = 0; i < check->nr; i++) { |
60a12722 BW |
1119 | int n = check->items[i].attr->attr_nr; |
1120 | struct all_attrs_item *item = &check->all_attrs[n]; | |
1121 | if (item->macro) { | |
1122 | item->value = ATTR__UNSET; | |
06a604e6 NTND |
1123 | rem++; |
1124 | } | |
1125 | } | |
6bc2e3f7 | 1126 | if (rem == check->nr) |
06a604e6 NTND |
1127 | return; |
1128 | } | |
d0bfd026 | 1129 | |
685b2925 | 1130 | rem = check->all_attrs_nr; |
dc81cf37 | 1131 | fill(path, pathlen, basename_offset, check->stack, check->all_attrs, rem); |
2d721744 MH |
1132 | } |
1133 | ||
6bc2e3f7 | 1134 | int git_check_attr(const char *path, struct attr_check *check) |
2d721744 MH |
1135 | { |
1136 | int i; | |
1137 | ||
6bc2e3f7 | 1138 | collect_some_attrs(path, check); |
f48fd688 | 1139 | |
6bc2e3f7 | 1140 | for (i = 0; i < check->nr; i++) { |
685b2925 BW |
1141 | size_t n = check->items[i].attr->attr_nr; |
1142 | const char *value = check->all_attrs[n].value; | |
515106fa JH |
1143 | if (value == ATTR__UNKNOWN) |
1144 | value = ATTR__UNSET; | |
6bc2e3f7 | 1145 | check->items[i].value = value; |
515106fa | 1146 | } |
f48fd688 | 1147 | |
d0bfd026 JH |
1148 | return 0; |
1149 | } | |
06f33c17 | 1150 | |
7f864111 | 1151 | void git_all_attrs(const char *path, struct attr_check *check) |
ee548df3 | 1152 | { |
7f864111 | 1153 | int i; |
ee548df3 | 1154 | |
7f864111 | 1155 | attr_check_reset(check); |
6bc2e3f7 | 1156 | collect_some_attrs(path, check); |
ee548df3 | 1157 | |
685b2925 BW |
1158 | for (i = 0; i < check->all_attrs_nr; i++) { |
1159 | const char *name = check->all_attrs[i].attr->name; | |
1160 | const char *value = check->all_attrs[i].value; | |
7f864111 JH |
1161 | struct attr_check_item *item; |
1162 | if (value == ATTR__UNSET || value == ATTR__UNKNOWN) | |
1163 | continue; | |
1164 | item = attr_check_append(check, git_attr(name)); | |
1165 | item->value = value; | |
ee548df3 | 1166 | } |
ee548df3 MH |
1167 | } |
1168 | ||
1a600b75 BW |
1169 | void attr_start(void) |
1170 | { | |
1171 | #ifndef NO_PTHREADS | |
1172 | pthread_mutex_init(&g_attr_hashmap.mutex, NULL); | |
dc81cf37 | 1173 | pthread_mutex_init(&check_vector.mutex, NULL); |
1a600b75 BW |
1174 | #endif |
1175 | } |