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#ifndef ATTR_H
#define ATTR_H
 
/* An attribute is a pointer to this opaque structure */
struct git_attr;
 
/*
 * Given a string, return the gitattribute object that
 * corresponds to it.
 */
struct git_attr *git_attr(const char *);
 
/* Internal use */
extern const char git_attr__true[];
extern const char git_attr__false[];
 
/* For public to check git_attr_check results */
#define ATTR_TRUE(v) ((v) == git_attr__true)
#define ATTR_FALSE(v) ((v) == git_attr__false)
#define ATTR_UNSET(v) ((v) == NULL)
 
/*
 * Send one or more git_attr_check to git_check_attrs(), and
 * each 'value' member tells what its value is.
 * Unset one is returned as NULL.
 */
struct attr_check_item {
	const struct git_attr *attr;
	const char *value;
};
 
struct attr_check {
	int nr;
	int alloc;
	struct attr_check_item *items;
};
 
extern struct attr_check *attr_check_alloc(void);
extern struct attr_check *attr_check_initl(const char *, ...);
 
extern struct attr_check_item *attr_check_append(struct attr_check *check,
						 const struct git_attr *attr);
 
extern void attr_check_reset(struct attr_check *check);
extern void attr_check_clear(struct attr_check *check);
extern void attr_check_free(struct attr_check *check);
 
/*
 * Return the name of the attribute represented by the argument.  The
 * return value is a pointer to a null-delimited string that is part
 * of the internal data structure; it should not be modified or freed.
 */
extern const char *git_attr_name(const struct git_attr *);
 
int git_check_attrs(const char *path, int, struct attr_check_item *);
extern int git_check_attr(const char *path, struct attr_check *check);
 
/*
 * Retrieve all attributes that apply to the specified path.
 * check holds the attributes and their values.
 */
extern void git_all_attrs(const char *path, struct attr_check *check);
 
enum git_attr_direction {
	GIT_ATTR_CHECKIN,
	GIT_ATTR_CHECKOUT,
	GIT_ATTR_INDEX
};
void git_attr_set_direction(enum git_attr_direction, struct index_state *);
 
#endif /* ATTR_H */