#ifndef ATTR_H

#define ATTR_H

/* An attribute is a pointer to this opaque structure */

struct git_attr;

/* opaque structures used internally for attribute collection */

struct all_attrs_item;

struct attr_stack;

/*

 * Given a string, return the gitattribute object that

 * corresponds to it.

 */

const 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;

	int all_attrs_nr;

	struct all_attrs_item *all_attrs;

	struct attr_stack *stack;

};

extern struct attr_check *attr_check_alloc(void);

extern struct attr_check *attr_check_initl(const char *, ...);

extern struct attr_check *attr_check_dup(const struct attr_check *check);

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 *);

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 new_direction,

			    struct index_state *istate);

extern void attr_start(void);

#endif /* ATTR_H */