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#ifndef WALKER_H
#define WALKER_H
 
struct walker {
	void *data;
	int (*fetch_ref)(struct walker *, char *ref, unsigned char *sha1);
	void (*prefetch)(struct walker *, unsigned char *sha1);
	int (*fetch)(struct walker *, unsigned char *sha1);
	void (*cleanup)(struct walker *);
	int get_tree;
	int get_history;
	int get_all;
	int get_verbosely;
	int get_recover;
 
	int corrupt_object_found;
};
 
/* Report what we got under get_verbosely */
void walker_say(struct walker *walker, const char *, const char *);
 
/* Load pull targets from stdin */
int walker_targets_stdin(char ***target, const char ***write_ref);
 
/* Free up loaded targets */
void walker_targets_free(int targets, char **target, const char **write_ref);
 
/* If write_ref is set, the ref filename to write the target value to. */
/* If write_ref_log_details is set, additional text will appear in the ref log. */
int walker_fetch(struct walker *impl, int targets, char **target,
		 const char **write_ref, const char *write_ref_log_details);
 
void walker_free(struct walker *walker);
 
struct walker *get_http_walker(const char *url);
 
#endif /* WALKER_H */