#ifndef READ_H_
#define READ_H_

#include "status.h"

#include <stdint.h>
#include <stdio.h>

struct ec3_reader;
struct ec3_tag_reader;

struct ec3_container_info {
	unsigned short c_version;
	unsigned short c_cluster_size;
	size_t c_tag_table_offset;
	size_t c_extent_table_offset;
	size_t c_cluster_table_offset;
	unsigned int c_nr_tags;
	unsigned int c_nr_extents;
	unsigned int c_nr_cluster_groups;

	uint64_t c_id;
};

struct ec3_tag_info {
	unsigned long tag_type;
	unsigned long tag_flags;
	unsigned long tag_checksum;
	unsigned long long tag_ident;
};

struct ec3_extent_info {
	unsigned long long ex_owner;
	unsigned long ex_logical_cluster;
	unsigned long ex_physical_cluster;
	unsigned long ex_count;
};

extern enum ec3_status ec3_reader_create(FILE *inp, struct ec3_reader **out);
extern void ec3_reader_finish(struct ec3_reader *reader);

extern const struct ec3_container_info *ec3_reader_get_container_info(
	const struct ec3_reader *reader);
extern const struct ec3_tag_info *ec3_reader_get_tags(
	const struct ec3_reader *reader);
extern const struct ec3_extent_info *ec3_reader_get_extents(
	const struct ec3_reader *reader);

extern enum ec3_status ec3_reader_open_tag(
	struct ec3_reader *reader,
	uint64_t tag_ident,
	struct ec3_tag_reader **out);

extern enum ec3_status ec3_tag_reader_close(struct ec3_tag_reader *tag);

#endif