Remove redundant check
[git/git.git] / attr.c
CommitLineData
06f33c17 1#define NO_THE_INDEX_COMPATIBILITY_MACROS
d0bfd026 2#include "cache.h"
6df42ab9 3#include "exec_cmd.h"
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4#include "attr.h"
5
a5e92abd
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6const char git_attr__true[] = "(builtin)true";
7const char git_attr__false[] = "\0(builtin)false";
8static const char git_attr__unknown[] = "(builtin)unknown";
9#define ATTR__TRUE git_attr__true
10#define ATTR__FALSE git_attr__false
11#define ATTR__UNSET NULL
12#define ATTR__UNKNOWN git_attr__unknown
515106fa 13
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PO
14static const char *attributes_file;
15
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16/*
17 * The basic design decision here is that we are not going to have
18 * insanely large number of attributes.
19 *
20 * This is a randomly chosen prime.
21 */
22#define HASHSIZE 257
23
24#ifndef DEBUG_ATTR
25#define DEBUG_ATTR 0
26#endif
27
28struct git_attr {
29 struct git_attr *next;
30 unsigned h;
f48fd688 31 int attr_nr;
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32 char name[FLEX_ARRAY];
33};
f48fd688 34static int attr_nr;
d0bfd026 35
f48fd688 36static struct git_attr_check *check_all_attr;
d0bfd026
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37static struct git_attr *(git_attr_hash[HASHSIZE]);
38
352404ac
MH
39char *git_attr_name(struct git_attr *attr)
40{
41 return attr->name;
42}
43
d0bfd026
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44static unsigned hash_name(const char *name, int namelen)
45{
48fb7deb 46 unsigned val = 0, c;
d0bfd026
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47
48 while (namelen--) {
49 c = *name++;
50 val = ((val << 7) | (val >> 22)) ^ c;
51 }
52 return val;
53}
54
e4aee10a
JH
55static int invalid_attr_name(const char *name, int namelen)
56{
57 /*
d42453ab
MH
58 * Attribute name cannot begin with '-' and must consist of
59 * characters from [-A-Za-z0-9_.].
e4aee10a 60 */
c0b13b21 61 if (namelen <= 0 || *name == '-')
e4aee10a
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62 return -1;
63 while (namelen--) {
64 char ch = *name++;
65 if (! (ch == '-' || ch == '.' || ch == '_' ||
66 ('0' <= ch && ch <= '9') ||
67 ('a' <= ch && ch <= 'z') ||
68 ('A' <= ch && ch <= 'Z')) )
69 return -1;
70 }
71 return 0;
72}
73
7fb0eaa2 74static struct git_attr *git_attr_internal(const char *name, int len)
d0bfd026
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75{
76 unsigned hval = hash_name(name, len);
77 unsigned pos = hval % HASHSIZE;
78 struct git_attr *a;
79
80 for (a = git_attr_hash[pos]; a; a = a->next) {
81 if (a->h == hval &&
82 !memcmp(a->name, name, len) && !a->name[len])
83 return a;
84 }
85
e4aee10a
JH
86 if (invalid_attr_name(name, len))
87 return NULL;
88
d0bfd026
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89 a = xmalloc(sizeof(*a) + len + 1);
90 memcpy(a->name, name, len);
91 a->name[len] = 0;
92 a->h = hval;
93 a->next = git_attr_hash[pos];
f48fd688 94 a->attr_nr = attr_nr++;
d0bfd026 95 git_attr_hash[pos] = a;
f48fd688
JH
96
97 check_all_attr = xrealloc(check_all_attr,
98 sizeof(*check_all_attr) * attr_nr);
99 check_all_attr[a->attr_nr].attr = a;
515106fa 100 check_all_attr[a->attr_nr].value = ATTR__UNKNOWN;
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101 return a;
102}
103
7fb0eaa2
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104struct git_attr *git_attr(const char *name)
105{
106 return git_attr_internal(name, strlen(name));
107}
108
d0bfd026
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109/*
110 * .gitattributes file is one line per record, each of which is
111 *
112 * (1) glob pattern.
113 * (2) whitespace
114 * (3) whitespace separated list of attribute names, each of which
515106fa
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115 * could be prefixed with '-' to mean "set to false", '!' to mean
116 * "unset".
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117 */
118
515106fa 119/* What does a matched pattern decide? */
d0bfd026 120struct attr_state {
d0bfd026 121 struct git_attr *attr;
a5e92abd 122 const char *setto;
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123};
124
125struct match_attr {
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126 union {
127 char *pattern;
128 struct git_attr *attr;
129 } u;
130 char is_macro;
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131 unsigned num_attr;
132 struct attr_state state[FLEX_ARRAY];
133};
134
135static const char blank[] = " \t\r\n";
136
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137static const char *parse_attr(const char *src, int lineno, const char *cp,
138 int *num_attr, struct match_attr *res)
139{
140 const char *ep, *equals;
141 int len;
142
143 ep = cp + strcspn(cp, blank);
144 equals = strchr(cp, '=');
145 if (equals && ep < equals)
146 equals = NULL;
147 if (equals)
148 len = equals - cp;
149 else
150 len = ep - cp;
151 if (!res) {
152 if (*cp == '-' || *cp == '!') {
153 cp++;
154 len--;
155 }
156 if (invalid_attr_name(cp, len)) {
157 fprintf(stderr,
158 "%.*s is not a valid attribute name: %s:%d\n",
159 len, cp, src, lineno);
160 return NULL;
161 }
162 } else {
163 struct attr_state *e;
164
165 e = &(res->state[*num_attr]);
166 if (*cp == '-' || *cp == '!') {
167 e->setto = (*cp == '-') ? ATTR__FALSE : ATTR__UNSET;
168 cp++;
169 len--;
170 }
171 else if (!equals)
172 e->setto = ATTR__TRUE;
173 else {
182af834 174 e->setto = xmemdupz(equals + 1, ep - equals - 1);
515106fa 175 }
7fb0eaa2 176 e->attr = git_attr_internal(cp, len);
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177 }
178 (*num_attr)++;
179 return ep + strspn(ep, blank);
180}
181
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182static struct match_attr *parse_attr_line(const char *line, const char *src,
183 int lineno, int macro_ok)
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184{
185 int namelen;
186 int num_attr;
187 const char *cp, *name;
515106fa 188 struct match_attr *res = NULL;
d0bfd026 189 int pass;
f48fd688 190 int is_macro;
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191
192 cp = line + strspn(line, blank);
193 if (!*cp || *cp == '#')
194 return NULL;
195 name = cp;
196 namelen = strcspn(name, blank);
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JH
197 if (strlen(ATTRIBUTE_MACRO_PREFIX) < namelen &&
198 !prefixcmp(name, ATTRIBUTE_MACRO_PREFIX)) {
199 if (!macro_ok) {
200 fprintf(stderr, "%s not allowed: %s:%d\n",
201 name, src, lineno);
202 return NULL;
203 }
204 is_macro = 1;
205 name += strlen(ATTRIBUTE_MACRO_PREFIX);
206 name += strspn(name, blank);
207 namelen = strcspn(name, blank);
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JH
208 if (invalid_attr_name(name, namelen)) {
209 fprintf(stderr,
210 "%.*s is not a valid attribute name: %s:%d\n",
211 namelen, name, src, lineno);
212 return NULL;
213 }
f48fd688
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214 }
215 else
216 is_macro = 0;
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217
218 for (pass = 0; pass < 2; pass++) {
219 /* pass 0 counts and allocates, pass 1 fills */
220 num_attr = 0;
221 cp = name + namelen;
222 cp = cp + strspn(cp, blank);
d7b0a093 223 while (*cp) {
515106fa 224 cp = parse_attr(src, lineno, cp, &num_attr, res);
d7b0a093
SP
225 if (!cp)
226 return NULL;
227 }
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JH
228 if (pass)
229 break;
230 res = xcalloc(1,
231 sizeof(*res) +
232 sizeof(struct attr_state) * num_attr +
f48fd688 233 (is_macro ? 0 : namelen + 1));
515106fa 234 if (is_macro)
7fb0eaa2 235 res->u.attr = git_attr_internal(name, namelen);
f48fd688 236 else {
4b25d091 237 res->u.pattern = (char *)&(res->state[num_attr]);
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238 memcpy(res->u.pattern, name, namelen);
239 res->u.pattern[namelen] = 0;
240 }
241 res->is_macro = is_macro;
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242 res->num_attr = num_attr;
243 }
244 return res;
245}
246
247/*
248 * Like info/exclude and .gitignore, the attribute information can
249 * come from many places.
250 *
251 * (1) .gitattribute file of the same directory;
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252 * (2) .gitattribute file of the parent directory if (1) does not have
253 * any match; this goes recursively upwards, just like .gitignore.
254 * (3) $GIT_DIR/info/attributes, which overrides both of the above.
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255 *
256 * In the same file, later entries override the earlier match, so in the
257 * global list, we would have entries from info/attributes the earliest
258 * (reading the file from top to bottom), .gitattribute of the root
259 * directory (again, reading the file from top to bottom) down to the
260 * current directory, and then scan the list backwards to find the first match.
261 * This is exactly the same as what excluded() does in dir.c to deal with
262 * .gitignore
263 */
264
265static struct attr_stack {
266 struct attr_stack *prev;
267 char *origin;
268 unsigned num_matches;
a4413118 269 unsigned alloc;
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270 struct match_attr **attrs;
271} *attr_stack;
272
273static void free_attr_elem(struct attr_stack *e)
274{
275 int i;
276 free(e->origin);
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277 for (i = 0; i < e->num_matches; i++) {
278 struct match_attr *a = e->attrs[i];
279 int j;
280 for (j = 0; j < a->num_attr; j++) {
a5e92abd 281 const char *setto = a->state[j].setto;
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282 if (setto == ATTR__TRUE ||
283 setto == ATTR__FALSE ||
284 setto == ATTR__UNSET ||
285 setto == ATTR__UNKNOWN)
286 ;
287 else
4b25d091 288 free((char *) setto);
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289 }
290 free(a);
291 }
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292 free(e);
293}
294
295static const char *builtin_attr[] = {
5ec3e670 296 "[attr]binary -diff -text",
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297 NULL,
298};
299
a4413118
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300static void handle_attr_line(struct attr_stack *res,
301 const char *line,
302 const char *src,
303 int lineno,
304 int macro_ok)
305{
306 struct match_attr *a;
307
308 a = parse_attr_line(line, src, lineno, macro_ok);
309 if (!a)
310 return;
311 if (res->alloc <= res->num_matches) {
312 res->alloc = alloc_nr(res->num_matches);
313 res->attrs = xrealloc(res->attrs,
314 sizeof(struct match_attr *) *
315 res->alloc);
316 }
317 res->attrs[res->num_matches++] = a;
318}
319
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320static struct attr_stack *read_attr_from_array(const char **list)
321{
322 struct attr_stack *res;
323 const char *line;
f48fd688 324 int lineno = 0;
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325
326 res = xcalloc(1, sizeof(*res));
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327 while ((line = *(list++)) != NULL)
328 handle_attr_line(res, line, "[builtin]", ++lineno, 1);
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329 return res;
330}
331
06f33c17
JH
332static enum git_attr_direction direction;
333static struct index_state *use_index;
334
f48fd688 335static struct attr_stack *read_attr_from_file(const char *path, int macro_ok)
d0bfd026 336{
a4413118 337 FILE *fp = fopen(path, "r");
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338 struct attr_stack *res;
339 char buf[2048];
f48fd688 340 int lineno = 0;
d0bfd026 341
d0bfd026 342 if (!fp)
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343 return NULL;
344 res = xcalloc(1, sizeof(*res));
345 while (fgets(buf, sizeof(buf), fp))
346 handle_attr_line(res, buf, path, ++lineno, macro_ok);
347 fclose(fp);
348 return res;
349}
d0bfd026 350
1a9d7e9b
JH
351static void *read_index_data(const char *path)
352{
353 int pos, len;
354 unsigned long sz;
355 enum object_type type;
356 void *data;
06f33c17 357 struct index_state *istate = use_index ? use_index : &the_index;
1a9d7e9b
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358
359 len = strlen(path);
06f33c17 360 pos = index_name_pos(istate, path, len);
1a9d7e9b
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361 if (pos < 0) {
362 /*
363 * We might be in the middle of a merge, in which
364 * case we would read stage #2 (ours).
365 */
366 int i;
367 for (i = -pos - 1;
06f33c17
JH
368 (pos < 0 && i < istate->cache_nr &&
369 !strcmp(istate->cache[i]->name, path));
1a9d7e9b 370 i++)
06f33c17 371 if (ce_stage(istate->cache[i]) == 2)
1a9d7e9b
JH
372 pos = i;
373 }
374 if (pos < 0)
375 return NULL;
06f33c17 376 data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
1a9d7e9b
JH
377 if (!data || type != OBJ_BLOB) {
378 free(data);
379 return NULL;
380 }
381 return data;
382}
383
06f33c17 384static struct attr_stack *read_attr_from_index(const char *path, int macro_ok)
a4413118
JH
385{
386 struct attr_stack *res;
1a9d7e9b
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387 char *buf, *sp;
388 int lineno = 0;
f48fd688 389
1a9d7e9b
JH
390 buf = read_index_data(path);
391 if (!buf)
06f33c17 392 return NULL;
1a9d7e9b 393
06f33c17 394 res = xcalloc(1, sizeof(*res));
1a9d7e9b
JH
395 for (sp = buf; *sp; ) {
396 char *ep;
397 int more;
398 for (ep = sp; *ep && *ep != '\n'; ep++)
399 ;
400 more = (*ep == '\n');
401 *ep = '\0';
402 handle_attr_line(res, sp, path, ++lineno, macro_ok);
403 sp = ep + more;
404 }
405 free(buf);
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406 return res;
407}
408
06f33c17
JH
409static struct attr_stack *read_attr(const char *path, int macro_ok)
410{
411 struct attr_stack *res;
412
413 if (direction == GIT_ATTR_CHECKOUT) {
414 res = read_attr_from_index(path, macro_ok);
415 if (!res)
416 res = read_attr_from_file(path, macro_ok);
417 }
4191e80a 418 else if (direction == GIT_ATTR_CHECKIN) {
06f33c17
JH
419 res = read_attr_from_file(path, macro_ok);
420 if (!res)
421 /*
422 * There is no checked out .gitattributes file there, but
423 * we might have it in the index. We allow operation in a
424 * sparsely checked out work tree, so read from it.
425 */
426 res = read_attr_from_index(path, macro_ok);
427 }
4191e80a
NTND
428 else
429 res = read_attr_from_index(path, macro_ok);
06f33c17
JH
430 if (!res)
431 res = xcalloc(1, sizeof(*res));
432 return res;
433}
434
d0bfd026
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435#if DEBUG_ATTR
436static void debug_info(const char *what, struct attr_stack *elem)
437{
438 fprintf(stderr, "%s: %s\n", what, elem->origin ? elem->origin : "()");
439}
cf94ccda 440static void debug_set(const char *what, const char *match, struct git_attr *attr, const void *v)
f48fd688 441{
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442 const char *value = v;
443
444 if (ATTR_TRUE(value))
445 value = "set";
446 else if (ATTR_FALSE(value))
447 value = "unset";
448 else if (ATTR_UNSET(value))
449 value = "unspecified";
450
451 fprintf(stderr, "%s: %s => %s (%s)\n",
452 what, attr->name, (char *) value, match);
f48fd688 453}
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454#define debug_push(a) debug_info("push", (a))
455#define debug_pop(a) debug_info("pop", (a))
456#else
457#define debug_push(a) do { ; } while (0)
458#define debug_pop(a) do { ; } while (0)
f48fd688 459#define debug_set(a,b,c,d) do { ; } while (0)
d0bfd026
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460#endif
461
06f33c17
JH
462static void drop_attr_stack(void)
463{
464 while (attr_stack) {
465 struct attr_stack *elem = attr_stack;
466 attr_stack = elem->prev;
467 free_attr_elem(elem);
468 }
469}
470
c5147722 471static const char *git_etc_gitattributes(void)
6df42ab9
PO
472{
473 static const char *system_wide;
474 if (!system_wide)
475 system_wide = system_path(ETC_GITATTRIBUTES);
476 return system_wide;
477}
478
c5147722 479static int git_attr_system(void)
6df42ab9
PO
480{
481 return !git_env_bool("GIT_ATTR_NOSYSTEM", 0);
482}
483
6df42ab9
PO
484static int git_attr_config(const char *var, const char *value, void *dummy)
485{
486 if (!strcmp(var, "core.attributesfile"))
487 return git_config_pathname(&attributes_file, var, value);
488
489 return 0;
490}
491
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492static void bootstrap_attr_stack(void)
493{
494 if (!attr_stack) {
495 struct attr_stack *elem;
496
497 elem = read_attr_from_array(builtin_attr);
498 elem->origin = NULL;
499 elem->prev = attr_stack;
500 attr_stack = elem;
501
6df42ab9
PO
502 if (git_attr_system()) {
503 elem = read_attr_from_file(git_etc_gitattributes(), 1);
504 if (elem) {
505 elem->origin = NULL;
506 elem->prev = attr_stack;
507 attr_stack = elem;
508 }
509 }
510
511 git_config(git_attr_config, NULL);
e91b6c50 512 if (attributes_file) {
6df42ab9
PO
513 elem = read_attr_from_file(attributes_file, 1);
514 if (elem) {
515 elem->origin = NULL;
516 elem->prev = attr_stack;
517 attr_stack = elem;
518 }
519 }
520
4191e80a 521 if (!is_bare_repository() || direction == GIT_ATTR_INDEX) {
2d35d556
RS
522 elem = read_attr(GITATTRIBUTES_FILE, 1);
523 elem->origin = strdup("");
524 elem->prev = attr_stack;
525 attr_stack = elem;
526 debug_push(elem);
527 }
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528
529 elem = read_attr_from_file(git_path(INFOATTRIBUTES_FILE), 1);
a4413118
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530 if (!elem)
531 elem = xcalloc(1, sizeof(*elem));
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532 elem->origin = NULL;
533 elem->prev = attr_stack;
534 attr_stack = elem;
535 }
536}
537
a8727017 538static void prepare_attr_stack(const char *path)
d0bfd026
JH
539{
540 struct attr_stack *elem, *info;
a8727017 541 int dirlen, len;
f66cf96d 542 struct strbuf pathbuf;
a8727017
MH
543 const char *cp;
544
545 cp = strrchr(path, '/');
546 if (!cp)
547 dirlen = 0;
548 else
549 dirlen = cp - path;
f66cf96d
DP
550
551 strbuf_init(&pathbuf, dirlen+2+strlen(GITATTRIBUTES_FILE));
d0bfd026
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552
553 /*
554 * At the bottom of the attribute stack is the built-in
6df42ab9
PO
555 * set of attribute definitions, followed by the contents
556 * of $(prefix)/etc/gitattributes and a file specified by
557 * core.attributesfile. Then, contents from
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JH
558 * .gitattribute files from directories closer to the
559 * root to the ones in deeper directories are pushed
560 * to the stack. Finally, at the very top of the stack
561 * we always keep the contents of $GIT_DIR/info/attributes.
562 *
563 * When checking, we use entries from near the top of the
564 * stack, preferring $GIT_DIR/info/attributes, then
565 * .gitattributes in deeper directories to shallower ones,
566 * and finally use the built-in set as the default.
567 */
7373eab4 568 bootstrap_attr_stack();
d0bfd026
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569
570 /*
571 * Pop the "info" one that is always at the top of the stack.
572 */
573 info = attr_stack;
574 attr_stack = info->prev;
575
576 /*
577 * Pop the ones from directories that are not the prefix of
578 * the path we are checking.
579 */
580 while (attr_stack && attr_stack->origin) {
581 int namelen = strlen(attr_stack->origin);
582
583 elem = attr_stack;
584 if (namelen <= dirlen &&
585 !strncmp(elem->origin, path, namelen))
586 break;
587
588 debug_pop(elem);
589 attr_stack = elem->prev;
590 free_attr_elem(elem);
591 }
592
593 /*
594 * Read from parent directories and push them down
595 */
4191e80a 596 if (!is_bare_repository() || direction == GIT_ATTR_INDEX) {
2d35d556
RS
597 while (1) {
598 char *cp;
599
600 len = strlen(attr_stack->origin);
601 if (dirlen <= len)
602 break;
f66cf96d
DP
603 strbuf_reset(&pathbuf);
604 strbuf_add(&pathbuf, path, dirlen);
605 strbuf_addch(&pathbuf, '/');
606 cp = strchr(pathbuf.buf + len + 1, '/');
2d35d556 607 strcpy(cp + 1, GITATTRIBUTES_FILE);
f66cf96d 608 elem = read_attr(pathbuf.buf, 0);
2d35d556 609 *cp = '\0';
f66cf96d 610 elem->origin = strdup(pathbuf.buf);
2d35d556
RS
611 elem->prev = attr_stack;
612 attr_stack = elem;
613 debug_push(elem);
614 }
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JH
615 }
616
d4c98565
RS
617 strbuf_release(&pathbuf);
618
d0bfd026
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619 /*
620 * Finally push the "info" one at the top of the stack.
621 */
622 info->prev = attr_stack;
623 attr_stack = info;
624}
625
626static int path_matches(const char *pathname, int pathlen,
627 const char *pattern,
628 const char *base, int baselen)
629{
630 if (!strchr(pattern, '/')) {
631 /* match basename */
632 const char *basename = strrchr(pathname, '/');
633 basename = basename ? basename + 1 : pathname;
634 return (fnmatch(pattern, basename, 0) == 0);
635 }
636 /*
637 * match with FNM_PATHNAME; the pattern has base implicitly
638 * in front of it.
639 */
640 if (*pattern == '/')
641 pattern++;
642 if (pathlen < baselen ||
cf94ccda 643 (baselen && pathname[baselen] != '/') ||
d0bfd026
JH
644 strncmp(pathname, base, baselen))
645 return 0;
82881b38
MO
646 if (baselen != 0)
647 baselen++;
648 return fnmatch(pattern, pathname + baselen, FNM_PATHNAME) == 0;
d0bfd026
JH
649}
650
ec775c41
HG
651static int macroexpand_one(int attr_nr, int rem);
652
515106fa
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653static int fill_one(const char *what, struct match_attr *a, int rem)
654{
655 struct git_attr_check *check = check_all_attr;
656 int i;
657
969f9d73 658 for (i = a->num_attr - 1; 0 < rem && 0 <= i; i--) {
515106fa 659 struct git_attr *attr = a->state[i].attr;
a5e92abd
JH
660 const char **n = &(check[attr->attr_nr].value);
661 const char *v = a->state[i].setto;
515106fa
JH
662
663 if (*n == ATTR__UNKNOWN) {
426c27b7
HG
664 debug_set(what,
665 a->is_macro ? a->u.attr->name : a->u.pattern,
666 attr, v);
515106fa
JH
667 *n = v;
668 rem--;
ec775c41 669 rem = macroexpand_one(attr->attr_nr, rem);
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JH
670 }
671 }
672 return rem;
673}
674
f48fd688 675static int fill(const char *path, int pathlen, struct attr_stack *stk, int rem)
d0bfd026 676{
515106fa 677 int i;
d0bfd026
JH
678 const char *base = stk->origin ? stk->origin : "";
679
680 for (i = stk->num_matches - 1; 0 < rem && 0 <= i; i--) {
681 struct match_attr *a = stk->attrs[i];
f48fd688
JH
682 if (a->is_macro)
683 continue;
d0bfd026 684 if (path_matches(path, pathlen,
515106fa
JH
685 a->u.pattern, base, strlen(base)))
686 rem = fill_one("fill", a, rem);
d0bfd026
JH
687 }
688 return rem;
689}
690
ec775c41 691static int macroexpand_one(int attr_nr, int rem)
f48fd688 692{
ec775c41
HG
693 struct attr_stack *stk;
694 struct match_attr *a = NULL;
515106fa 695 int i;
f48fd688 696
ec775c41
HG
697 if (check_all_attr[attr_nr].value != ATTR__TRUE)
698 return rem;
699
700 for (stk = attr_stack; !a && stk; stk = stk->prev)
701 for (i = stk->num_matches - 1; !a && 0 <= i; i--) {
702 struct match_attr *ma = stk->attrs[i];
703 if (!ma->is_macro)
704 continue;
705 if (ma->u.attr->attr_nr == attr_nr)
706 a = ma;
707 }
708
709 if (a)
515106fa 710 rem = fill_one("expand", a, rem);
ec775c41 711
f48fd688
JH
712 return rem;
713}
714
2d721744
MH
715/*
716 * Collect all attributes for path into the array pointed to by
717 * check_all_attr.
718 */
719static void collect_all_attrs(const char *path)
d0bfd026
JH
720{
721 struct attr_stack *stk;
2d721744 722 int i, pathlen, rem;
d0bfd026 723
2d721744 724 prepare_attr_stack(path);
f48fd688 725 for (i = 0; i < attr_nr; i++)
515106fa 726 check_all_attr[i].value = ATTR__UNKNOWN;
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JH
727
728 pathlen = strlen(path);
f48fd688
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729 rem = attr_nr;
730 for (stk = attr_stack; 0 < rem && stk; stk = stk->prev)
731 rem = fill(path, pathlen, stk, rem);
2d721744
MH
732}
733
734int git_checkattr(const char *path, int num, struct git_attr_check *check)
735{
736 int i;
737
738 collect_all_attrs(path);
f48fd688 739
515106fa 740 for (i = 0; i < num; i++) {
a5e92abd 741 const char *value = check_all_attr[check[i].attr->attr_nr].value;
515106fa
JH
742 if (value == ATTR__UNKNOWN)
743 value = ATTR__UNSET;
744 check[i].value = value;
745 }
f48fd688 746
d0bfd026
JH
747 return 0;
748}
06f33c17
JH
749
750void git_attr_set_direction(enum git_attr_direction new, struct index_state *istate)
751{
752 enum git_attr_direction old = direction;
4191e80a
NTND
753
754 if (is_bare_repository() && new != GIT_ATTR_INDEX)
755 die("BUG: non-INDEX attr direction in a bare repo");
756
06f33c17
JH
757 direction = new;
758 if (new != old)
759 drop_attr_stack();
760 use_index = istate;
761}