git/git

#ifndef TREE_H
#define TREE_H

#include "object.h"

struct pathspec;
struct repository;
struct strbuf;

struct tree {
    struct object object;
    void *buffer;
    unsigned long size;
};

extern const char *tree_type;

struct tree *lookup_tree(struct repository *r, const struct object_id *oid);

int parse_tree_buffer(struct tree *item, void *buffer, unsigned long size);

int parse_tree_gently(struct tree *tree, int quiet_on_missing);
static inline int parse_tree(struct tree *tree)
{
    return parse_tree_gently(tree, 0);
}
void free_tree_buffer(struct tree *tree);

/* Parses and returns the tree in the given ent, chasing tags and commits. */
struct tree *parse_tree_indirect(const struct object_id *oid);

/*
 * Functions for comparing pathnames
 */
int base_name_compare(const char *name1, size_t len1, int mode1,
              const char *name2, size_t len2, int mode2);
int df_name_compare(const char *name1, size_t len1, int mode1,
            const char *name2, size_t len2, int mode2);
int name_compare(const char *name1, size_t len1,
         const char *name2, size_t len2);

#define READ_TREE_RECURSIVE 1
typedef int (*read_tree_fn_t)(const struct object_id *, struct strbuf *, const char *, unsigned int, void *);

int read_tree_at(struct repository *r,
         struct tree *tree, struct strbuf *base,
         int depth,
         const struct pathspec *pathspec,
         read_tree_fn_t fn, void *context);

int read_tree(struct repository *r,
          struct tree *tree,
          const struct pathspec *pathspec,
          read_tree_fn_t fn, void *context);

#endif /* TREE_H */