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.
6 * One basic design decision here is that we are not going to support
7 * an insanely large number of attributes.
10 #define NO_THE_INDEX_COMPATIBILITY_MACROS
17 #include "thread-utils.h"
19 const char git_attr__true
[] = "(builtin)true";
20 const char git_attr__false
[] = "\0(builtin)false";
21 static const char git_attr__unknown
[] = "(builtin)unknown";
22 #define ATTR__TRUE git_attr__true
23 #define ATTR__FALSE git_attr__false
24 #define ATTR__UNSET NULL
25 #define ATTR__UNKNOWN git_attr__unknown
32 int attr_nr
; /* unique attribute number */
33 char name
[FLEX_ARRAY
]; /* attribute name */
36 const char *git_attr_name(const struct git_attr
*attr
)
44 pthread_mutex_t mutex
;
48 static inline void hashmap_lock(struct attr_hashmap
*map
)
51 pthread_mutex_lock(&map
->mutex
);
55 static inline void hashmap_unlock(struct attr_hashmap
*map
)
58 pthread_mutex_unlock(&map
->mutex
);
63 * The global dictionary of all interned attributes. This
64 * is a singleton object which is shared between threads.
65 * Access to this dictionary must be surrounded with a mutex.
67 static struct attr_hashmap g_attr_hashmap
;
69 /* The container for objects stored in "struct attr_hashmap" */
70 struct attr_hash_entry
{
71 struct hashmap_entry ent
; /* must be the first member! */
72 const char *key
; /* the key; memory should be owned by value */
73 size_t keylen
; /* length of the key */
74 void *value
; /* the stored value */
77 /* attr_hashmap comparison function */
78 static int attr_hash_entry_cmp(const struct attr_hash_entry
*a
,
79 const struct attr_hash_entry
*b
,
82 return (a
->keylen
!= b
->keylen
) || strncmp(a
->key
, b
->key
, a
->keylen
);
85 /* Initialize an 'attr_hashmap' object */
86 static void attr_hashmap_init(struct attr_hashmap
*map
)
88 hashmap_init(&map
->map
, (hashmap_cmp_fn
) attr_hash_entry_cmp
, 0);
92 * Retrieve the 'value' stored in a hashmap given the provided 'key'.
93 * If there is no matching entry, return NULL.
95 static void *attr_hashmap_get(struct attr_hashmap
*map
,
96 const char *key
, size_t keylen
)
98 struct attr_hash_entry k
;
99 struct attr_hash_entry
*e
;
101 if (!map
->map
.tablesize
)
102 attr_hashmap_init(map
);
104 hashmap_entry_init(&k
, memhash(key
, keylen
));
107 e
= hashmap_get(&map
->map
, &k
, NULL
);
109 return e
? e
->value
: NULL
;
112 /* Add 'value' to a hashmap based on the provided 'key'. */
113 static void attr_hashmap_add(struct attr_hashmap
*map
,
114 const char *key
, size_t keylen
,
117 struct attr_hash_entry
*e
;
119 if (!map
->map
.tablesize
)
120 attr_hashmap_init(map
);
122 e
= xmalloc(sizeof(struct attr_hash_entry
));
123 hashmap_entry_init(e
, memhash(key
, keylen
));
128 hashmap_add(&map
->map
, e
);
131 struct all_attrs_item
{
132 const struct git_attr
*attr
;
135 * If 'macro' is non-NULL, indicates that 'attr' is a macro based on
136 * the current attribute stack and contains a pointer to the match_attr
137 * definition of the macro
139 const struct match_attr
*macro
;
143 * Reallocate and reinitialize the array of all attributes (which is used in
144 * the attribute collection process) in 'check' based on the global dictionary
147 static void all_attrs_init(struct attr_hashmap
*map
, struct attr_check
*check
)
153 if (map
->map
.size
< check
->all_attrs_nr
)
154 die("BUG: interned attributes shouldn't be deleted");
157 * If the number of attributes in the global dictionary has increased
158 * (or this attr_check instance doesn't have an initialized all_attrs
159 * field), reallocate the provided attr_check instance's all_attrs
160 * field and fill each entry with its corresponding git_attr.
162 if (map
->map
.size
!= check
->all_attrs_nr
) {
163 struct attr_hash_entry
*e
;
164 struct hashmap_iter iter
;
165 hashmap_iter_init(&map
->map
, &iter
);
167 REALLOC_ARRAY(check
->all_attrs
, map
->map
.size
);
168 check
->all_attrs_nr
= map
->map
.size
;
170 while ((e
= hashmap_iter_next(&iter
))) {
171 const struct git_attr
*a
= e
->value
;
172 check
->all_attrs
[a
->attr_nr
].attr
= a
;
179 * Re-initialize every entry in check->all_attrs.
180 * This re-initialization can live outside of the locked region since
181 * the attribute dictionary is no longer being accessed.
183 for (i
= 0; i
< check
->all_attrs_nr
; i
++) {
184 check
->all_attrs
[i
].value
= ATTR__UNKNOWN
;
185 check
->all_attrs
[i
].macro
= NULL
;
189 static int attr_name_valid(const char *name
, size_t namelen
)
192 * Attribute name cannot begin with '-' and must consist of
193 * characters from [-A-Za-z0-9_.].
195 if (namelen
<= 0 || *name
== '-')
199 if (! (ch
== '-' || ch
== '.' || ch
== '_' ||
200 ('0' <= ch
&& ch
<= '9') ||
201 ('a' <= ch
&& ch
<= 'z') ||
202 ('A' <= ch
&& ch
<= 'Z')) )
208 static void report_invalid_attr(const char *name
, size_t len
,
209 const char *src
, int lineno
)
211 struct strbuf err
= STRBUF_INIT
;
212 strbuf_addf(&err
, _("%.*s is not a valid attribute name"),
214 fprintf(stderr
, "%s: %s:%d\n", err
.buf
, src
, lineno
);
215 strbuf_release(&err
);
219 * Given a 'name', lookup and return the corresponding attribute in the global
220 * dictionary. If no entry is found, create a new attribute and store it in
223 static const struct git_attr
*git_attr_internal(const char *name
, int namelen
)
227 if (!attr_name_valid(name
, namelen
))
230 hashmap_lock(&g_attr_hashmap
);
232 a
= attr_hashmap_get(&g_attr_hashmap
, name
, namelen
);
235 FLEX_ALLOC_MEM(a
, name
, name
, namelen
);
236 a
->attr_nr
= g_attr_hashmap
.map
.size
;
238 attr_hashmap_add(&g_attr_hashmap
, a
->name
, namelen
, a
);
239 assert(a
->attr_nr
== (g_attr_hashmap
.map
.size
- 1));
242 hashmap_unlock(&g_attr_hashmap
);
247 const struct git_attr
*git_attr(const char *name
)
249 return git_attr_internal(name
, strlen(name
));
252 /* What does a matched pattern decide? */
254 const struct git_attr
*attr
;
262 unsigned flags
; /* EXC_FLAG_* */
266 * One rule, as from a .gitattributes file.
268 * If is_macro is true, then u.attr is a pointer to the git_attr being
271 * If is_macro is false, then u.pat is the filename pattern to which the
274 * In either case, num_attr is the number of attributes affected by
275 * this rule, and state is an array listing them. The attributes are
276 * listed as they appear in the file (macros unexpanded).
281 const struct git_attr
*attr
;
285 struct attr_state state
[FLEX_ARRAY
];
288 static const char blank
[] = " \t\r\n";
291 * Parse a whitespace-delimited attribute state (i.e., "attr",
292 * "-attr", "!attr", or "attr=value") from the string starting at src.
293 * If e is not NULL, write the results to *e. Return a pointer to the
294 * remainder of the string (with leading whitespace removed), or NULL
295 * if there was an error.
297 static const char *parse_attr(const char *src
, int lineno
, const char *cp
,
298 struct attr_state
*e
)
300 const char *ep
, *equals
;
303 ep
= cp
+ strcspn(cp
, blank
);
304 equals
= strchr(cp
, '=');
305 if (equals
&& ep
< equals
)
312 if (*cp
== '-' || *cp
== '!') {
316 if (!attr_name_valid(cp
, len
)) {
317 report_invalid_attr(cp
, len
, src
, lineno
);
322 * As this function is always called twice, once with
323 * e == NULL in the first pass and then e != NULL in
324 * the second pass, no need for attr_name_valid()
327 if (*cp
== '-' || *cp
== '!') {
328 e
->setto
= (*cp
== '-') ? ATTR__FALSE
: ATTR__UNSET
;
333 e
->setto
= ATTR__TRUE
;
335 e
->setto
= xmemdupz(equals
+ 1, ep
- equals
- 1);
337 e
->attr
= git_attr_internal(cp
, len
);
339 return ep
+ strspn(ep
, blank
);
342 static struct match_attr
*parse_attr_line(const char *line
, const char *src
,
343 int lineno
, int macro_ok
)
347 const char *cp
, *name
, *states
;
348 struct match_attr
*res
= NULL
;
350 struct strbuf pattern
= STRBUF_INIT
;
352 cp
= line
+ strspn(line
, blank
);
353 if (!*cp
|| *cp
== '#')
357 if (*cp
== '"' && !unquote_c_style(&pattern
, name
, &states
)) {
359 namelen
= pattern
.len
;
361 namelen
= strcspn(name
, blank
);
362 states
= name
+ namelen
;
365 if (strlen(ATTRIBUTE_MACRO_PREFIX
) < namelen
&&
366 starts_with(name
, ATTRIBUTE_MACRO_PREFIX
)) {
368 fprintf(stderr
, "%s not allowed: %s:%d\n",
373 name
+= strlen(ATTRIBUTE_MACRO_PREFIX
);
374 name
+= strspn(name
, blank
);
375 namelen
= strcspn(name
, blank
);
376 if (!attr_name_valid(name
, namelen
)) {
377 report_invalid_attr(name
, namelen
, src
, lineno
);
384 states
+= strspn(states
, blank
);
386 /* First pass to count the attr_states */
387 for (cp
= states
, num_attr
= 0; *cp
; num_attr
++) {
388 cp
= parse_attr(src
, lineno
, cp
, NULL
);
395 sizeof(struct attr_state
) * num_attr
+
396 (is_macro
? 0 : namelen
+ 1));
398 res
->u
.attr
= git_attr_internal(name
, namelen
);
400 char *p
= (char *)&(res
->state
[num_attr
]);
401 memcpy(p
, name
, namelen
);
402 res
->u
.pat
.pattern
= p
;
403 parse_exclude_pattern(&res
->u
.pat
.pattern
,
404 &res
->u
.pat
.patternlen
,
406 &res
->u
.pat
.nowildcardlen
);
407 if (res
->u
.pat
.flags
& EXC_FLAG_NEGATIVE
) {
408 warning(_("Negative patterns are ignored in git attributes\n"
409 "Use '\\!' for literal leading exclamation."));
413 res
->is_macro
= is_macro
;
414 res
->num_attr
= num_attr
;
416 /* Second pass to fill the attr_states */
417 for (cp
= states
, i
= 0; *cp
; i
++) {
418 cp
= parse_attr(src
, lineno
, cp
, &(res
->state
[i
]));
421 strbuf_release(&pattern
);
425 strbuf_release(&pattern
);
431 * Like info/exclude and .gitignore, the attribute information can
432 * come from many places.
434 * (1) .gitattribute file of the same directory;
435 * (2) .gitattribute file of the parent directory if (1) does not have
436 * any match; this goes recursively upwards, just like .gitignore.
437 * (3) $GIT_DIR/info/attributes, which overrides both of the above.
439 * In the same file, later entries override the earlier match, so in the
440 * global list, we would have entries from info/attributes the earliest
441 * (reading the file from top to bottom), .gitattribute of the root
442 * directory (again, reading the file from top to bottom) down to the
443 * current directory, and then scan the list backwards to find the first match.
444 * This is exactly the same as what is_excluded() does in dir.c to deal with
445 * .gitignore file and info/excludes file as a fallback.
449 struct attr_stack
*prev
;
452 unsigned num_matches
;
454 struct match_attr
**attrs
;
457 static void attr_stack_free(struct attr_stack
*e
)
461 for (i
= 0; i
< e
->num_matches
; i
++) {
462 struct match_attr
*a
= e
->attrs
[i
];
464 for (j
= 0; j
< a
->num_attr
; j
++) {
465 const char *setto
= a
->state
[j
].setto
;
466 if (setto
== ATTR__TRUE
||
467 setto
== ATTR__FALSE
||
468 setto
== ATTR__UNSET
||
469 setto
== ATTR__UNKNOWN
)
472 free((char *) setto
);
480 static void drop_attr_stack(struct attr_stack
**stack
)
483 struct attr_stack
*elem
= *stack
;
485 attr_stack_free(elem
);
489 /* List of all attr_check structs; access should be surrounded by mutex */
490 static struct check_vector
{
493 struct attr_check
**checks
;
495 pthread_mutex_t mutex
;
499 static inline void vector_lock(void)
502 pthread_mutex_lock(&check_vector
.mutex
);
506 static inline void vector_unlock(void)
509 pthread_mutex_unlock(&check_vector
.mutex
);
513 static void check_vector_add(struct attr_check
*c
)
517 ALLOC_GROW(check_vector
.checks
,
520 check_vector
.checks
[check_vector
.nr
++] = c
;
525 static void check_vector_remove(struct attr_check
*check
)
532 for (i
= 0; i
< check_vector
.nr
; i
++)
533 if (check_vector
.checks
[i
] == check
)
536 if (i
>= check_vector
.nr
)
537 die("BUG: no entry found");
539 /* shift entries over */
540 for (; i
< check_vector
.nr
- 1; i
++)
541 check_vector
.checks
[i
] = check_vector
.checks
[i
+ 1];
548 /* Iterate through all attr_check instances and drop their stacks */
549 static void drop_all_attr_stacks(void)
555 for (i
= 0; i
< check_vector
.nr
; i
++) {
556 drop_attr_stack(&check_vector
.checks
[i
]->stack
);
562 struct attr_check
*attr_check_alloc(void)
564 struct attr_check
*c
= xcalloc(1, sizeof(struct attr_check
));
566 /* save pointer to the check struct */
572 struct attr_check
*attr_check_initl(const char *one
, ...)
574 struct attr_check
*check
;
579 va_start(params
, one
);
580 for (cnt
= 1; (param
= va_arg(params
, const char *)) != NULL
; cnt
++)
584 check
= attr_check_alloc();
587 check
->items
= xcalloc(cnt
, sizeof(struct attr_check_item
));
589 check
->items
[0].attr
= git_attr(one
);
590 va_start(params
, one
);
591 for (cnt
= 1; cnt
< check
->nr
; cnt
++) {
592 const struct git_attr
*attr
;
593 param
= va_arg(params
, const char *);
595 die("BUG: counted %d != ended at %d",
597 attr
= git_attr(param
);
599 die("BUG: %s: not a valid attribute name", param
);
600 check
->items
[cnt
].attr
= attr
;
606 struct attr_check_item
*attr_check_append(struct attr_check
*check
,
607 const struct git_attr
*attr
)
609 struct attr_check_item
*item
;
611 ALLOC_GROW(check
->items
, check
->nr
+ 1, check
->alloc
);
612 item
= &check
->items
[check
->nr
++];
617 void attr_check_reset(struct attr_check
*check
)
622 void attr_check_clear(struct attr_check
*check
)
629 free(check
->all_attrs
);
630 check
->all_attrs
= NULL
;
631 check
->all_attrs_nr
= 0;
633 drop_attr_stack(&check
->stack
);
636 void attr_check_free(struct attr_check
*check
)
639 /* Remove check from the check vector */
640 check_vector_remove(check
);
642 attr_check_clear(check
);
647 static const char *builtin_attr
[] = {
648 "[attr]binary -diff -merge -text",
652 static void handle_attr_line(struct attr_stack
*res
,
658 struct match_attr
*a
;
660 a
= parse_attr_line(line
, src
, lineno
, macro_ok
);
663 ALLOC_GROW(res
->attrs
, res
->num_matches
+ 1, res
->alloc
);
664 res
->attrs
[res
->num_matches
++] = a
;
667 static struct attr_stack
*read_attr_from_array(const char **list
)
669 struct attr_stack
*res
;
673 res
= xcalloc(1, sizeof(*res
));
674 while ((line
= *(list
++)) != NULL
)
675 handle_attr_line(res
, line
, "[builtin]", ++lineno
, 1);
680 * NEEDSWORK: these two are tricky. The callers assume there is a
681 * single, system-wide global state "where we read attributes from?"
682 * and when the state is flipped by calling git_attr_set_direction(),
683 * attr_stack is discarded so that subsequent attr_check will lazily
684 * read from the right place. And they do not know or care who called
685 * by them uses the attribute subsystem, hence have no knowledge of
686 * existing git_attr_check instances or future ones that will be
689 * Probably we need a thread_local that holds these two variables,
690 * and a list of git_attr_check instances (which need to be maintained
691 * by hooking into git_attr_check_alloc(), git_attr_check_initl(), and
692 * git_attr_check_clear(). Then git_attr_set_direction() updates the
693 * fields in that thread_local for these two variables, iterate over
694 * all the active git_attr_check instances and discard the attr_stack
695 * they hold. Yuck, but it sounds doable.
697 static enum git_attr_direction direction
;
698 static struct index_state
*use_index
;
700 static struct attr_stack
*read_attr_from_file(const char *path
, int macro_ok
)
702 FILE *fp
= fopen(path
, "r");
703 struct attr_stack
*res
;
708 if (errno
!= ENOENT
&& errno
!= ENOTDIR
)
709 warn_on_inaccessible(path
);
712 res
= xcalloc(1, sizeof(*res
));
713 while (fgets(buf
, sizeof(buf
), fp
)) {
716 skip_utf8_bom(&bufp
, strlen(bufp
));
717 handle_attr_line(res
, bufp
, path
, ++lineno
, macro_ok
);
723 static struct attr_stack
*read_attr_from_index(const char *path
, int macro_ok
)
725 struct attr_stack
*res
;
729 buf
= read_blob_data_from_index(use_index
? use_index
: &the_index
, path
, NULL
);
733 res
= xcalloc(1, sizeof(*res
));
734 for (sp
= buf
; *sp
; ) {
738 ep
= strchrnul(sp
, '\n');
739 more
= (*ep
== '\n');
741 handle_attr_line(res
, sp
, path
, ++lineno
, macro_ok
);
748 static struct attr_stack
*read_attr(const char *path
, int macro_ok
)
750 struct attr_stack
*res
;
752 if (direction
== GIT_ATTR_CHECKOUT
) {
753 res
= read_attr_from_index(path
, macro_ok
);
755 res
= read_attr_from_file(path
, macro_ok
);
757 else if (direction
== GIT_ATTR_CHECKIN
) {
758 res
= read_attr_from_file(path
, macro_ok
);
761 * There is no checked out .gitattributes file there, but
762 * we might have it in the index. We allow operation in a
763 * sparsely checked out work tree, so read from it.
765 res
= read_attr_from_index(path
, macro_ok
);
768 res
= read_attr_from_index(path
, macro_ok
);
770 res
= xcalloc(1, sizeof(*res
));
775 static void debug_info(const char *what
, struct attr_stack
*elem
)
777 fprintf(stderr
, "%s: %s\n", what
, elem
->origin
? elem
->origin
: "()");
779 static void debug_set(const char *what
, const char *match
, struct git_attr
*attr
, const void *v
)
781 const char *value
= v
;
783 if (ATTR_TRUE(value
))
785 else if (ATTR_FALSE(value
))
787 else if (ATTR_UNSET(value
))
788 value
= "unspecified";
790 fprintf(stderr
, "%s: %s => %s (%s)\n",
791 what
, attr
->name
, (char *) value
, match
);
793 #define debug_push(a) debug_info("push", (a))
794 #define debug_pop(a) debug_info("pop", (a))
796 #define debug_push(a) do { ; } while (0)
797 #define debug_pop(a) do { ; } while (0)
798 #define debug_set(a,b,c,d) do { ; } while (0)
799 #endif /* DEBUG_ATTR */
801 static const char *git_etc_gitattributes(void)
803 static const char *system_wide
;
805 system_wide
= system_path(ETC_GITATTRIBUTES
);
809 static const char *get_home_gitattributes(void)
811 if (!git_attributes_file
)
812 git_attributes_file
= xdg_config_home("attributes");
814 return git_attributes_file
;
817 static int git_attr_system(void)
819 return !git_env_bool("GIT_ATTR_NOSYSTEM", 0);
822 static GIT_PATH_FUNC(git_path_info_attributes
, INFOATTRIBUTES_FILE
)
824 static void push_stack(struct attr_stack
**attr_stack_p
,
825 struct attr_stack
*elem
, char *origin
, size_t originlen
)
828 elem
->origin
= origin
;
830 elem
->originlen
= originlen
;
831 elem
->prev
= *attr_stack_p
;
832 *attr_stack_p
= elem
;
836 static void bootstrap_attr_stack(struct attr_stack
**stack
)
838 struct attr_stack
*e
;
844 e
= read_attr_from_array(builtin_attr
);
845 push_stack(stack
, e
, NULL
, 0);
847 /* system-wide frame */
848 if (git_attr_system()) {
849 e
= read_attr_from_file(git_etc_gitattributes(), 1);
850 push_stack(stack
, e
, NULL
, 0);
854 if (get_home_gitattributes()) {
855 e
= read_attr_from_file(get_home_gitattributes(), 1);
856 push_stack(stack
, e
, NULL
, 0);
860 if (!is_bare_repository() || direction
== GIT_ATTR_INDEX
)
861 e
= read_attr(GITATTRIBUTES_FILE
, 1);
863 e
= xcalloc(1, sizeof(struct attr_stack
));
864 push_stack(stack
, e
, xstrdup(""), 0);
867 if (startup_info
->have_repository
)
868 e
= read_attr_from_file(git_path_info_attributes(), 1);
872 e
= xcalloc(1, sizeof(struct attr_stack
));
873 push_stack(stack
, e
, NULL
, 0);
876 static void prepare_attr_stack(const char *path
, int dirlen
,
877 struct attr_stack
**stack
)
879 struct attr_stack
*info
;
882 * At the bottom of the attribute stack is the built-in
883 * set of attribute definitions, followed by the contents
884 * of $(prefix)/etc/gitattributes and a file specified by
885 * core.attributesfile. Then, contents from
886 * .gitattribute files from directories closer to the
887 * root to the ones in deeper directories are pushed
888 * to the stack. Finally, at the very top of the stack
889 * we always keep the contents of $GIT_DIR/info/attributes.
891 * When checking, we use entries from near the top of the
892 * stack, preferring $GIT_DIR/info/attributes, then
893 * .gitattributes in deeper directories to shallower ones,
894 * and finally use the built-in set as the default.
896 bootstrap_attr_stack(stack
);
899 * Pop the "info" one that is always at the top of the stack.
905 * Pop the ones from directories that are not the prefix of
906 * the path we are checking. Break out of the loop when we see
907 * the root one (whose origin is an empty string "") or the builtin
908 * one (whose origin is NULL) without popping it.
910 while ((*stack
)->origin
) {
911 int namelen
= (*stack
)->originlen
;
912 struct attr_stack
*elem
;
915 if (namelen
<= dirlen
&&
916 !strncmp(elem
->origin
, path
, namelen
) &&
917 (!namelen
|| path
[namelen
] == '/'))
922 attr_stack_free(elem
);
926 * Read from parent directories and push them down
928 if (!is_bare_repository() || direction
== GIT_ATTR_INDEX
) {
930 * bootstrap_attr_stack() should have added, and the
931 * above loop should have stopped before popping, the
932 * root element whose attr_stack->origin is set to an
935 struct strbuf pathbuf
= STRBUF_INIT
;
937 assert((*stack
)->origin
);
938 strbuf_addstr(&pathbuf
, (*stack
)->origin
);
939 /* Build up to the directory 'path' is in */
940 while (pathbuf
.len
< dirlen
) {
941 size_t len
= pathbuf
.len
;
942 struct attr_stack
*next
;
945 /* Skip path-separator */
946 if (len
< dirlen
&& is_dir_sep(path
[len
]))
948 /* Find the end of the next component */
949 while (len
< dirlen
&& !is_dir_sep(path
[len
]))
953 strbuf_addch(&pathbuf
, '/');
954 strbuf_add(&pathbuf
, path
+ pathbuf
.len
,
955 (len
- pathbuf
.len
));
956 strbuf_addf(&pathbuf
, "/%s", GITATTRIBUTES_FILE
);
958 next
= read_attr(pathbuf
.buf
, 0);
960 /* reset the pathbuf to not include "/.gitattributes" */
961 strbuf_setlen(&pathbuf
, len
);
963 origin
= xstrdup(pathbuf
.buf
);
964 push_stack(stack
, next
, origin
, len
);
967 strbuf_release(&pathbuf
);
971 * Finally push the "info" one at the top of the stack.
973 push_stack(stack
, info
, NULL
, 0);
976 static int path_matches(const char *pathname
, int pathlen
,
978 const struct pattern
*pat
,
979 const char *base
, int baselen
)
981 const char *pattern
= pat
->pattern
;
982 int prefix
= pat
->nowildcardlen
;
983 int isdir
= (pathlen
&& pathname
[pathlen
- 1] == '/');
985 if ((pat
->flags
& EXC_FLAG_MUSTBEDIR
) && !isdir
)
988 if (pat
->flags
& EXC_FLAG_NODIR
) {
989 return match_basename(pathname
+ basename_offset
,
990 pathlen
- basename_offset
- isdir
,
992 pat
->patternlen
, pat
->flags
);
994 return match_pathname(pathname
, pathlen
- isdir
,
996 pattern
, prefix
, pat
->patternlen
, pat
->flags
);
999 static int macroexpand_one(struct all_attrs_item
*all_attrs
, int nr
, int rem
);
1001 static int fill_one(const char *what
, struct all_attrs_item
*all_attrs
,
1002 const struct match_attr
*a
, int rem
)
1006 for (i
= a
->num_attr
- 1; rem
> 0 && i
>= 0; i
--) {
1007 const struct git_attr
*attr
= a
->state
[i
].attr
;
1008 const char **n
= &(all_attrs
[attr
->attr_nr
].value
);
1009 const char *v
= a
->state
[i
].setto
;
1011 if (*n
== ATTR__UNKNOWN
) {
1013 a
->is_macro
? a
->u
.attr
->name
: a
->u
.pat
.pattern
,
1017 rem
= macroexpand_one(all_attrs
, attr
->attr_nr
, rem
);
1023 static int fill(const char *path
, int pathlen
, int basename_offset
,
1024 const struct attr_stack
*stack
,
1025 struct all_attrs_item
*all_attrs
, int rem
)
1027 for (; rem
> 0 && stack
; stack
= stack
->prev
) {
1029 const char *base
= stack
->origin
? stack
->origin
: "";
1031 for (i
= stack
->num_matches
- 1; 0 < rem
&& 0 <= i
; i
--) {
1032 const struct match_attr
*a
= stack
->attrs
[i
];
1035 if (path_matches(path
, pathlen
, basename_offset
,
1036 &a
->u
.pat
, base
, stack
->originlen
))
1037 rem
= fill_one("fill", all_attrs
, a
, rem
);
1044 static int macroexpand_one(struct all_attrs_item
*all_attrs
, int nr
, int rem
)
1046 const struct all_attrs_item
*item
= &all_attrs
[nr
];
1048 if (item
->macro
&& item
->value
== ATTR__TRUE
)
1049 return fill_one("expand", all_attrs
, item
->macro
, rem
);
1055 * Marks the attributes which are macros based on the attribute stack.
1056 * This prevents having to search through the attribute stack each time
1057 * a macro needs to be expanded during the fill stage.
1059 static void determine_macros(struct all_attrs_item
*all_attrs
,
1060 const struct attr_stack
*stack
)
1062 for (; stack
; stack
= stack
->prev
) {
1064 for (i
= stack
->num_matches
- 1; i
>= 0; i
--) {
1065 const struct match_attr
*ma
= stack
->attrs
[i
];
1067 int n
= ma
->u
.attr
->attr_nr
;
1068 if (!all_attrs
[n
].macro
) {
1069 all_attrs
[n
].macro
= ma
;
1077 * Collect attributes for path into the array pointed to by check->all_attrs.
1078 * If check->check_nr is non-zero, only attributes in check[] are collected.
1079 * Otherwise all attributes are collected.
1081 static void collect_some_attrs(const char *path
, struct attr_check
*check
)
1083 int i
, pathlen
, rem
, dirlen
;
1084 const char *cp
, *last_slash
= NULL
;
1085 int basename_offset
;
1087 for (cp
= path
; *cp
; cp
++) {
1088 if (*cp
== '/' && cp
[1])
1091 pathlen
= cp
- path
;
1093 basename_offset
= last_slash
+ 1 - path
;
1094 dirlen
= last_slash
- path
;
1096 basename_offset
= 0;
1100 prepare_attr_stack(path
, dirlen
, &check
->stack
);
1101 all_attrs_init(&g_attr_hashmap
, check
);
1102 determine_macros(check
->all_attrs
, check
->stack
);
1106 for (i
= 0; i
< check
->nr
; i
++) {
1107 int n
= check
->items
[i
].attr
->attr_nr
;
1108 struct all_attrs_item
*item
= &check
->all_attrs
[n
];
1110 item
->value
= ATTR__UNSET
;
1114 if (rem
== check
->nr
)
1118 rem
= check
->all_attrs_nr
;
1119 fill(path
, pathlen
, basename_offset
, check
->stack
, check
->all_attrs
, rem
);
1122 int git_check_attr(const char *path
, struct attr_check
*check
)
1126 collect_some_attrs(path
, check
);
1128 for (i
= 0; i
< check
->nr
; i
++) {
1129 size_t n
= check
->items
[i
].attr
->attr_nr
;
1130 const char *value
= check
->all_attrs
[n
].value
;
1131 if (value
== ATTR__UNKNOWN
)
1132 value
= ATTR__UNSET
;
1133 check
->items
[i
].value
= value
;
1139 void git_all_attrs(const char *path
, struct attr_check
*check
)
1143 attr_check_reset(check
);
1144 collect_some_attrs(path
, check
);
1146 for (i
= 0; i
< check
->all_attrs_nr
; i
++) {
1147 const char *name
= check
->all_attrs
[i
].attr
->name
;
1148 const char *value
= check
->all_attrs
[i
].value
;
1149 struct attr_check_item
*item
;
1150 if (value
== ATTR__UNSET
|| value
== ATTR__UNKNOWN
)
1152 item
= attr_check_append(check
, git_attr(name
));
1153 item
->value
= value
;
1157 void git_attr_set_direction(enum git_attr_direction
new, struct index_state
*istate
)
1159 enum git_attr_direction old
= direction
;
1161 if (is_bare_repository() && new != GIT_ATTR_INDEX
)
1162 die("BUG: non-INDEX attr direction in a bare repo");
1166 drop_all_attr_stacks();
1170 void attr_start(void)
1173 pthread_mutex_init(&g_attr_hashmap
.mutex
, NULL
);
1174 pthread_mutex_init(&check_vector
.mutex
, NULL
);