#ifndef UNTAR_H
#define UNTAR_H
#include <stdlib.h>

#define TAR_NAME_LEN 100
#define TAR_USER_LEN 32
#define TAR_GROUP_LEN 32
#define TAR_UINT_LEN 8		/* good for 24 bits */
#define TAR_ULONG_LEN 12	/* good for 32 bits */
#define TAR_MAGIC_LEN 8

struct tar_record {
	char name[TAR_NAME_LEN+1];
	u_int mode;
	u_int uid;
	u_int gid;
	u_long size;	
	u_long mtime;
	u_int chksum;
	char linkflag;
	char linkname[TAR_NAME_LEN+1];
	char magic[TAR_MAGIC_LEN+1];
	char uname[TAR_USER_LEN+1];
	char gname[TAR_GROUP_LEN+1];
	u_int devmajor;
	u_int devminor;
};

struct untar_stream;
struct untar_stream *untar_stream_create(const char *name);
void untar_set_opaque(struct untar_stream *ts, void *opaque);
void untar_set_file_data(struct untar_stream *ts, void (*file_data)(void *, struct untar_stream *, struct tar_record *, u_long off, size_t len, u_char *data));
void untar_set_new_file(struct untar_stream *ts, void (*new_file)(void *, struct untar_stream *, struct tar_record *));
void untar_stream_finished(struct untar_stream *ts);
int untar_stream_push(struct untar_stream *ts, size_t len, void *data);
int untar_finished(struct untar_stream *ts);
#endif