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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_attr(), and
* each 'value' member tells what its value is.
* Unset one is returned as NULL.
*/
struct git_attr_check {
struct git_attr *attr;
const char *value;
};

/*
* 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.
*/
char *git_attr_name(struct git_attr *);

int git_check_attr(const char *path, int, struct git_attr_check *);

/*
* Retrieve all attributes that apply to the specified path. *num
* will be set to the number of attributes on the path; **check will
* be set to point at a newly-allocated array of git_attr_check
* objects describing the attributes and their values. *check must be
* free()ed by the caller.
*/
int git_all_attrs(const char *path, int *num, struct git_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 */
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