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.
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
)
43 pthread_mutex_t mutex
;
46 static inline void hashmap_lock(struct attr_hashmap
*map
)
48 pthread_mutex_lock(&map
->mutex
);
51 static inline void hashmap_unlock(struct attr_hashmap
*map
)
53 pthread_mutex_unlock(&map
->mutex
);
57 * The global dictionary of all interned attributes. This
58 * is a singleton object which is shared between threads.
59 * Access to this dictionary must be surrounded with a mutex.
61 static struct attr_hashmap g_attr_hashmap
;
63 /* The container for objects stored in "struct attr_hashmap" */
64 struct attr_hash_entry
{
65 struct hashmap_entry ent
; /* must be the first member! */
66 const char *key
; /* the key; memory should be owned by value */
67 size_t keylen
; /* length of the key */
68 void *value
; /* the stored value */
71 /* attr_hashmap comparison function */
72 static int attr_hash_entry_cmp(const void *unused_cmp_data
,
74 const void *entry_or_key
,
75 const void *unused_keydata
)
77 const struct attr_hash_entry
*a
= entry
;
78 const struct attr_hash_entry
*b
= entry_or_key
;
79 return (a
->keylen
!= b
->keylen
) || strncmp(a
->key
, b
->key
, a
->keylen
);
82 /* Initialize an 'attr_hashmap' object */
83 static void attr_hashmap_init(struct attr_hashmap
*map
)
85 hashmap_init(&map
->map
, attr_hash_entry_cmp
, NULL
, 0);
89 * Retrieve the 'value' stored in a hashmap given the provided 'key'.
90 * If there is no matching entry, return NULL.
92 static void *attr_hashmap_get(struct attr_hashmap
*map
,
93 const char *key
, size_t keylen
)
95 struct attr_hash_entry k
;
96 struct attr_hash_entry
*e
;
98 if (!map
->map
.tablesize
)
99 attr_hashmap_init(map
);
101 hashmap_entry_init(&k
, memhash(key
, keylen
));
104 e
= hashmap_get(&map
->map
, &k
, NULL
);
106 return e
? e
->value
: NULL
;
109 /* Add 'value' to a hashmap based on the provided 'key'. */
110 static void attr_hashmap_add(struct attr_hashmap
*map
,
111 const char *key
, size_t keylen
,
114 struct attr_hash_entry
*e
;
116 if (!map
->map
.tablesize
)
117 attr_hashmap_init(map
);
119 e
= xmalloc(sizeof(struct attr_hash_entry
));
120 hashmap_entry_init(e
, memhash(key
, keylen
));
125 hashmap_add(&map
->map
, e
);
128 struct all_attrs_item
{
129 const struct git_attr
*attr
;
132 * If 'macro' is non-NULL, indicates that 'attr' is a macro based on
133 * the current attribute stack and contains a pointer to the match_attr
134 * definition of the macro
136 const struct match_attr
*macro
;
140 * Reallocate and reinitialize the array of all attributes (which is used in
141 * the attribute collection process) in 'check' based on the global dictionary
144 static void all_attrs_init(struct attr_hashmap
*map
, struct attr_check
*check
)
151 size
= hashmap_get_size(&map
->map
);
152 if (size
< check
->all_attrs_nr
)
153 BUG("interned attributes shouldn't be deleted");
156 * If the number of attributes in the global dictionary has increased
157 * (or this attr_check instance doesn't have an initialized all_attrs
158 * field), reallocate the provided attr_check instance's all_attrs
159 * field and fill each entry with its corresponding git_attr.
161 if (size
!= check
->all_attrs_nr
) {
162 struct attr_hash_entry
*e
;
163 struct hashmap_iter iter
;
164 hashmap_iter_init(&map
->map
, &iter
);
166 REALLOC_ARRAY(check
->all_attrs
, size
);
167 check
->all_attrs_nr
= size
;
169 while ((e
= hashmap_iter_next(&iter
))) {
170 const struct git_attr
*a
= e
->value
;
171 check
->all_attrs
[a
->attr_nr
].attr
= a
;
178 * Re-initialize every entry in check->all_attrs.
179 * This re-initialization can live outside of the locked region since
180 * the attribute dictionary is no longer being accessed.
182 for (i
= 0; i
< check
->all_attrs_nr
; i
++) {
183 check
->all_attrs
[i
].value
= ATTR__UNKNOWN
;
184 check
->all_attrs
[i
].macro
= NULL
;
188 static int attr_name_valid(const char *name
, size_t namelen
)
191 * Attribute name cannot begin with '-' and must consist of
192 * characters from [-A-Za-z0-9_.].
194 if (namelen
<= 0 || *name
== '-')
198 if (! (ch
== '-' || ch
== '.' || ch
== '_' ||
199 ('0' <= ch
&& ch
<= '9') ||
200 ('a' <= ch
&& ch
<= 'z') ||
201 ('A' <= ch
&& ch
<= 'Z')) )
207 static void report_invalid_attr(const char *name
, size_t len
,
208 const char *src
, int lineno
)
210 struct strbuf err
= STRBUF_INIT
;
211 strbuf_addf(&err
, _("%.*s is not a valid attribute name"),
213 fprintf(stderr
, "%s: %s:%d\n", err
.buf
, src
, lineno
);
214 strbuf_release(&err
);
218 * Given a 'name', lookup and return the corresponding attribute in the global
219 * dictionary. If no entry is found, create a new attribute and store it in
222 static const struct git_attr
*git_attr_internal(const char *name
, int namelen
)
226 if (!attr_name_valid(name
, namelen
))
229 hashmap_lock(&g_attr_hashmap
);
231 a
= attr_hashmap_get(&g_attr_hashmap
, name
, namelen
);
234 FLEX_ALLOC_MEM(a
, name
, name
, namelen
);
235 a
->attr_nr
= hashmap_get_size(&g_attr_hashmap
.map
);
237 attr_hashmap_add(&g_attr_hashmap
, a
->name
, namelen
, a
);
239 (hashmap_get_size(&g_attr_hashmap
.map
) - 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_ln(stderr
, _("%s not allowed: %s:%d"),
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) .gitattributes file of the same directory;
435 * (2) .gitattributes 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), .gitattributes 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
;
494 pthread_mutex_t mutex
;
497 static inline void vector_lock(void)
499 pthread_mutex_lock(&check_vector
.mutex
);
502 static inline void vector_unlock(void)
504 pthread_mutex_unlock(&check_vector
.mutex
);
507 static void check_vector_add(struct attr_check
*c
)
511 ALLOC_GROW(check_vector
.checks
,
514 check_vector
.checks
[check_vector
.nr
++] = c
;
519 static void check_vector_remove(struct attr_check
*check
)
526 for (i
= 0; i
< check_vector
.nr
; i
++)
527 if (check_vector
.checks
[i
] == check
)
530 if (i
>= check_vector
.nr
)
531 BUG("no entry found");
533 /* shift entries over */
534 for (; i
< check_vector
.nr
- 1; i
++)
535 check_vector
.checks
[i
] = check_vector
.checks
[i
+ 1];
542 /* Iterate through all attr_check instances and drop their stacks */
543 static void drop_all_attr_stacks(void)
549 for (i
= 0; i
< check_vector
.nr
; i
++) {
550 drop_attr_stack(&check_vector
.checks
[i
]->stack
);
556 struct attr_check
*attr_check_alloc(void)
558 struct attr_check
*c
= xcalloc(1, sizeof(struct attr_check
));
560 /* save pointer to the check struct */
566 struct attr_check
*attr_check_initl(const char *one
, ...)
568 struct attr_check
*check
;
573 va_start(params
, one
);
574 for (cnt
= 1; (param
= va_arg(params
, const char *)) != NULL
; cnt
++)
578 check
= attr_check_alloc();
581 check
->items
= xcalloc(cnt
, sizeof(struct attr_check_item
));
583 check
->items
[0].attr
= git_attr(one
);
584 va_start(params
, one
);
585 for (cnt
= 1; cnt
< check
->nr
; cnt
++) {
586 const struct git_attr
*attr
;
587 param
= va_arg(params
, const char *);
589 BUG("counted %d != ended at %d",
591 attr
= git_attr(param
);
593 BUG("%s: not a valid attribute name", param
);
594 check
->items
[cnt
].attr
= attr
;
600 struct attr_check
*attr_check_dup(const struct attr_check
*check
)
602 struct attr_check
*ret
;
607 ret
= attr_check_alloc();
610 ret
->alloc
= check
->alloc
;
611 ALLOC_ARRAY(ret
->items
, ret
->nr
);
612 COPY_ARRAY(ret
->items
, check
->items
, ret
->nr
);
617 struct attr_check_item
*attr_check_append(struct attr_check
*check
,
618 const struct git_attr
*attr
)
620 struct attr_check_item
*item
;
622 ALLOC_GROW(check
->items
, check
->nr
+ 1, check
->alloc
);
623 item
= &check
->items
[check
->nr
++];
628 void attr_check_reset(struct attr_check
*check
)
633 void attr_check_clear(struct attr_check
*check
)
635 FREE_AND_NULL(check
->items
);
639 FREE_AND_NULL(check
->all_attrs
);
640 check
->all_attrs_nr
= 0;
642 drop_attr_stack(&check
->stack
);
645 void attr_check_free(struct attr_check
*check
)
648 /* Remove check from the check vector */
649 check_vector_remove(check
);
651 attr_check_clear(check
);
656 static const char *builtin_attr
[] = {
657 "[attr]binary -diff -merge -text",
661 static void handle_attr_line(struct attr_stack
*res
,
667 struct match_attr
*a
;
669 a
= parse_attr_line(line
, src
, lineno
, macro_ok
);
672 ALLOC_GROW(res
->attrs
, res
->num_matches
+ 1, res
->alloc
);
673 res
->attrs
[res
->num_matches
++] = a
;
676 static struct attr_stack
*read_attr_from_array(const char **list
)
678 struct attr_stack
*res
;
682 res
= xcalloc(1, sizeof(*res
));
683 while ((line
= *(list
++)) != NULL
)
684 handle_attr_line(res
, line
, "[builtin]", ++lineno
, 1);
689 * Callers into the attribute system assume there is a single, system-wide
690 * global state where attributes are read from and when the state is flipped by
691 * calling git_attr_set_direction(), the stack frames that have been
692 * constructed need to be discarded so so that subsequent calls into the
693 * attribute system will lazily read from the right place. Since changing
694 * direction causes a global paradigm shift, it should not ever be called while
695 * another thread could potentially be calling into the attribute system.
697 static enum git_attr_direction direction
;
699 void git_attr_set_direction(enum git_attr_direction new_direction
)
701 if (is_bare_repository() && new_direction
!= GIT_ATTR_INDEX
)
702 BUG("non-INDEX attr direction in a bare repo");
704 if (new_direction
!= direction
)
705 drop_all_attr_stacks();
707 direction
= new_direction
;
710 static struct attr_stack
*read_attr_from_file(const char *path
, int macro_ok
)
712 FILE *fp
= fopen_or_warn(path
, "r");
713 struct attr_stack
*res
;
719 res
= xcalloc(1, sizeof(*res
));
720 while (fgets(buf
, sizeof(buf
), fp
)) {
723 skip_utf8_bom(&bufp
, strlen(bufp
));
724 handle_attr_line(res
, bufp
, path
, ++lineno
, macro_ok
);
730 static struct attr_stack
*read_attr_from_index(const struct index_state
*istate
,
734 struct attr_stack
*res
;
741 buf
= read_blob_data_from_index(istate
, path
, NULL
);
745 res
= xcalloc(1, sizeof(*res
));
746 for (sp
= buf
; *sp
; ) {
750 ep
= strchrnul(sp
, '\n');
751 more
= (*ep
== '\n');
753 handle_attr_line(res
, sp
, path
, ++lineno
, macro_ok
);
760 static struct attr_stack
*read_attr(const struct index_state
*istate
,
761 const char *path
, int macro_ok
)
763 struct attr_stack
*res
= NULL
;
765 if (direction
== GIT_ATTR_INDEX
) {
766 res
= read_attr_from_index(istate
, path
, macro_ok
);
767 } else if (!is_bare_repository()) {
768 if (direction
== GIT_ATTR_CHECKOUT
) {
769 res
= read_attr_from_index(istate
, path
, macro_ok
);
771 res
= read_attr_from_file(path
, macro_ok
);
772 } else if (direction
== GIT_ATTR_CHECKIN
) {
773 res
= read_attr_from_file(path
, macro_ok
);
776 * There is no checked out .gitattributes file
777 * there, but we might have it in the index.
778 * We allow operation in a sparsely checked out
779 * work tree, so read from it.
781 res
= read_attr_from_index(istate
, path
, macro_ok
);
786 res
= xcalloc(1, sizeof(*res
));
791 static void debug_info(const char *what
, struct attr_stack
*elem
)
793 fprintf(stderr
, "%s: %s\n", what
, elem
->origin
? elem
->origin
: "()");
795 static void debug_set(const char *what
, const char *match
, struct git_attr
*attr
, const void *v
)
797 const char *value
= v
;
799 if (ATTR_TRUE(value
))
801 else if (ATTR_FALSE(value
))
803 else if (ATTR_UNSET(value
))
804 value
= "unspecified";
806 fprintf(stderr
, "%s: %s => %s (%s)\n",
807 what
, attr
->name
, (char *) value
, match
);
809 #define debug_push(a) debug_info("push", (a))
810 #define debug_pop(a) debug_info("pop", (a))
812 #define debug_push(a) do { ; } while (0)
813 #define debug_pop(a) do { ; } while (0)
814 #define debug_set(a,b,c,d) do { ; } while (0)
815 #endif /* DEBUG_ATTR */
817 static const char *git_etc_gitattributes(void)
819 static const char *system_wide
;
821 system_wide
= system_path(ETC_GITATTRIBUTES
);
825 static const char *get_home_gitattributes(void)
827 if (!git_attributes_file
)
828 git_attributes_file
= xdg_config_home("attributes");
830 return git_attributes_file
;
833 static int git_attr_system(void)
835 return !git_env_bool("GIT_ATTR_NOSYSTEM", 0);
838 static GIT_PATH_FUNC(git_path_info_attributes
, INFOATTRIBUTES_FILE
)
840 static void push_stack(struct attr_stack
**attr_stack_p
,
841 struct attr_stack
*elem
, char *origin
, size_t originlen
)
844 elem
->origin
= origin
;
846 elem
->originlen
= originlen
;
847 elem
->prev
= *attr_stack_p
;
848 *attr_stack_p
= elem
;
852 static void bootstrap_attr_stack(const struct index_state
*istate
,
853 struct attr_stack
**stack
)
855 struct attr_stack
*e
;
861 e
= read_attr_from_array(builtin_attr
);
862 push_stack(stack
, e
, NULL
, 0);
864 /* system-wide frame */
865 if (git_attr_system()) {
866 e
= read_attr_from_file(git_etc_gitattributes(), 1);
867 push_stack(stack
, e
, NULL
, 0);
871 if (get_home_gitattributes()) {
872 e
= read_attr_from_file(get_home_gitattributes(), 1);
873 push_stack(stack
, e
, NULL
, 0);
877 e
= read_attr(istate
, GITATTRIBUTES_FILE
, 1);
878 push_stack(stack
, e
, xstrdup(""), 0);
881 if (startup_info
->have_repository
)
882 e
= read_attr_from_file(git_path_info_attributes(), 1);
886 e
= xcalloc(1, sizeof(struct attr_stack
));
887 push_stack(stack
, e
, NULL
, 0);
890 static void prepare_attr_stack(const struct index_state
*istate
,
891 const char *path
, int dirlen
,
892 struct attr_stack
**stack
)
894 struct attr_stack
*info
;
895 struct strbuf pathbuf
= STRBUF_INIT
;
898 * At the bottom of the attribute stack is the built-in
899 * set of attribute definitions, followed by the contents
900 * of $(prefix)/etc/gitattributes and a file specified by
901 * core.attributesfile. Then, contents from
902 * .gitattributes files from directories closer to the
903 * root to the ones in deeper directories are pushed
904 * to the stack. Finally, at the very top of the stack
905 * we always keep the contents of $GIT_DIR/info/attributes.
907 * When checking, we use entries from near the top of the
908 * stack, preferring $GIT_DIR/info/attributes, then
909 * .gitattributes in deeper directories to shallower ones,
910 * and finally use the built-in set as the default.
912 bootstrap_attr_stack(istate
, stack
);
915 * Pop the "info" one that is always at the top of the stack.
921 * Pop the ones from directories that are not the prefix of
922 * the path we are checking. Break out of the loop when we see
923 * the root one (whose origin is an empty string "") or the builtin
924 * one (whose origin is NULL) without popping it.
926 while ((*stack
)->origin
) {
927 int namelen
= (*stack
)->originlen
;
928 struct attr_stack
*elem
;
931 if (namelen
<= dirlen
&&
932 !strncmp(elem
->origin
, path
, namelen
) &&
933 (!namelen
|| path
[namelen
] == '/'))
938 attr_stack_free(elem
);
942 * bootstrap_attr_stack() should have added, and the
943 * above loop should have stopped before popping, the
944 * root element whose attr_stack->origin is set to an
947 assert((*stack
)->origin
);
949 strbuf_addstr(&pathbuf
, (*stack
)->origin
);
950 /* Build up to the directory 'path' is in */
951 while (pathbuf
.len
< dirlen
) {
952 size_t len
= pathbuf
.len
;
953 struct attr_stack
*next
;
956 /* Skip path-separator */
957 if (len
< dirlen
&& is_dir_sep(path
[len
]))
959 /* Find the end of the next component */
960 while (len
< dirlen
&& !is_dir_sep(path
[len
]))
964 strbuf_addch(&pathbuf
, '/');
965 strbuf_add(&pathbuf
, path
+ pathbuf
.len
, (len
- pathbuf
.len
));
966 strbuf_addf(&pathbuf
, "/%s", GITATTRIBUTES_FILE
);
968 next
= read_attr(istate
, pathbuf
.buf
, 0);
970 /* reset the pathbuf to not include "/.gitattributes" */
971 strbuf_setlen(&pathbuf
, len
);
973 origin
= xstrdup(pathbuf
.buf
);
974 push_stack(stack
, next
, origin
, len
);
978 * Finally push the "info" one at the top of the stack.
980 push_stack(stack
, info
, NULL
, 0);
982 strbuf_release(&pathbuf
);
985 static int path_matches(const char *pathname
, int pathlen
,
987 const struct pattern
*pat
,
988 const char *base
, int baselen
)
990 const char *pattern
= pat
->pattern
;
991 int prefix
= pat
->nowildcardlen
;
992 int isdir
= (pathlen
&& pathname
[pathlen
- 1] == '/');
994 if ((pat
->flags
& EXC_FLAG_MUSTBEDIR
) && !isdir
)
997 if (pat
->flags
& EXC_FLAG_NODIR
) {
998 return match_basename(pathname
+ basename_offset
,
999 pathlen
- basename_offset
- isdir
,
1001 pat
->patternlen
, pat
->flags
);
1003 return match_pathname(pathname
, pathlen
- isdir
,
1005 pattern
, prefix
, pat
->patternlen
, pat
->flags
);
1008 static int macroexpand_one(struct all_attrs_item
*all_attrs
, int nr
, int rem
);
1010 static int fill_one(const char *what
, struct all_attrs_item
*all_attrs
,
1011 const struct match_attr
*a
, int rem
)
1015 for (i
= a
->num_attr
- 1; rem
> 0 && i
>= 0; i
--) {
1016 const struct git_attr
*attr
= a
->state
[i
].attr
;
1017 const char **n
= &(all_attrs
[attr
->attr_nr
].value
);
1018 const char *v
= a
->state
[i
].setto
;
1020 if (*n
== ATTR__UNKNOWN
) {
1022 a
->is_macro
? a
->u
.attr
->name
: a
->u
.pat
.pattern
,
1026 rem
= macroexpand_one(all_attrs
, attr
->attr_nr
, rem
);
1032 static int fill(const char *path
, int pathlen
, int basename_offset
,
1033 const struct attr_stack
*stack
,
1034 struct all_attrs_item
*all_attrs
, int rem
)
1036 for (; rem
> 0 && stack
; stack
= stack
->prev
) {
1038 const char *base
= stack
->origin
? stack
->origin
: "";
1040 for (i
= stack
->num_matches
- 1; 0 < rem
&& 0 <= i
; i
--) {
1041 const struct match_attr
*a
= stack
->attrs
[i
];
1044 if (path_matches(path
, pathlen
, basename_offset
,
1045 &a
->u
.pat
, base
, stack
->originlen
))
1046 rem
= fill_one("fill", all_attrs
, a
, rem
);
1053 static int macroexpand_one(struct all_attrs_item
*all_attrs
, int nr
, int rem
)
1055 const struct all_attrs_item
*item
= &all_attrs
[nr
];
1057 if (item
->macro
&& item
->value
== ATTR__TRUE
)
1058 return fill_one("expand", all_attrs
, item
->macro
, rem
);
1064 * Marks the attributes which are macros based on the attribute stack.
1065 * This prevents having to search through the attribute stack each time
1066 * a macro needs to be expanded during the fill stage.
1068 static void determine_macros(struct all_attrs_item
*all_attrs
,
1069 const struct attr_stack
*stack
)
1071 for (; stack
; stack
= stack
->prev
) {
1073 for (i
= stack
->num_matches
- 1; i
>= 0; i
--) {
1074 const struct match_attr
*ma
= stack
->attrs
[i
];
1076 int n
= ma
->u
.attr
->attr_nr
;
1077 if (!all_attrs
[n
].macro
) {
1078 all_attrs
[n
].macro
= ma
;
1086 * Collect attributes for path into the array pointed to by check->all_attrs.
1087 * If check->check_nr is non-zero, only attributes in check[] are collected.
1088 * Otherwise all attributes are collected.
1090 static void collect_some_attrs(const struct index_state
*istate
,
1092 struct attr_check
*check
)
1094 int pathlen
, rem
, dirlen
;
1095 const char *cp
, *last_slash
= NULL
;
1096 int basename_offset
;
1098 for (cp
= path
; *cp
; cp
++) {
1099 if (*cp
== '/' && cp
[1])
1102 pathlen
= cp
- path
;
1104 basename_offset
= last_slash
+ 1 - path
;
1105 dirlen
= last_slash
- path
;
1107 basename_offset
= 0;
1111 prepare_attr_stack(istate
, path
, dirlen
, &check
->stack
);
1112 all_attrs_init(&g_attr_hashmap
, check
);
1113 determine_macros(check
->all_attrs
, check
->stack
);
1115 rem
= check
->all_attrs_nr
;
1116 fill(path
, pathlen
, basename_offset
, check
->stack
, check
->all_attrs
, rem
);
1119 void git_check_attr(const struct index_state
*istate
,
1121 struct attr_check
*check
)
1125 collect_some_attrs(istate
, path
, check
);
1127 for (i
= 0; i
< check
->nr
; i
++) {
1128 size_t n
= check
->items
[i
].attr
->attr_nr
;
1129 const char *value
= check
->all_attrs
[n
].value
;
1130 if (value
== ATTR__UNKNOWN
)
1131 value
= ATTR__UNSET
;
1132 check
->items
[i
].value
= value
;
1136 void git_all_attrs(const struct index_state
*istate
,
1137 const char *path
, struct attr_check
*check
)
1141 attr_check_reset(check
);
1142 collect_some_attrs(istate
, path
, check
);
1144 for (i
= 0; i
< check
->all_attrs_nr
; i
++) {
1145 const char *name
= check
->all_attrs
[i
].attr
->name
;
1146 const char *value
= check
->all_attrs
[i
].value
;
1147 struct attr_check_item
*item
;
1148 if (value
== ATTR__UNSET
|| value
== ATTR__UNKNOWN
)
1150 item
= attr_check_append(check
, git_attr(name
));
1151 item
->value
= value
;
1155 void attr_start(void)
1157 pthread_mutex_init(&g_attr_hashmap
.mutex
, NULL
);
1158 pthread_mutex_init(&check_vector
.mutex
, NULL
);