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#ifndef CACHE_TREE_H
#define CACHE_TREE_H
 
struct cache_tree;
struct cache_tree_sub {
	struct cache_tree *cache_tree;
	int namelen;
	int used;
	char name[FLEX_ARRAY];
};
 
struct cache_tree {
	int entry_count; /* negative means "invalid" */
	unsigned char sha1[20];
	int subtree_nr;
	int subtree_alloc;
	struct cache_tree_sub **down;
};
 
struct cache_tree *cache_tree(void);
void cache_tree_free(struct cache_tree **);
void cache_tree_invalidate_path(struct cache_tree *, const char *);
struct cache_tree_sub *cache_tree_sub(struct cache_tree *, const char *);
 
void *cache_tree_write(struct cache_tree *root, unsigned long *size_p);
struct cache_tree *cache_tree_read(const char *buffer, unsigned long size);
 
int cache_tree_fully_valid(struct cache_tree *);
int cache_tree_update(struct cache_tree *, struct cache_entry **, int, int);
 
#endif