#pragma once

#include "unzip.h"
#include <string.h>

#ifdef __cplusplus
extern "C" {
#endif

//stgatilov: Note that these data structures must be kept in sync with stuff defined in unzip.c.
//Given that minizip's development is almost frozen, I guess they will rarely change.

#ifndef ALLOC
# define ALLOC(size) (malloc(size))
#endif
#ifndef TRYFREE
# define TRYFREE(p) {if (p) free(p);}
#endif

#ifndef UNZ_BUFSIZE
#define UNZ_BUFSIZE (16384)
#endif

/* unz_file_info_interntal contain internal info about a file in zipfile*/
typedef struct unz_file_info64_internal_s
{
	ZPOS64_T offset_curfile;/* relative offset of local header 8 bytes */
} unz_file_info64_internal;

/* file_in_zip_read_info_s contain internal information about a file in zipfile,
	when reading and decompress it */
typedef struct
{
	char  *read_buffer;         /* internal buffer for compressed data */
	z_stream stream;            /* zLib stream structure for inflate */

#ifdef HAVE_BZIP2
	bz_stream bstream;          /* bzLib stream structure for bziped */
#endif

	ZPOS64_T pos_in_zipfile;       /* position in byte on the zipfile, for fseek*/
	uLong stream_initialised;   /* flag set if stream structure is initialised*/

	ZPOS64_T offset_local_extrafield;/* offset of the local extra field */
	uInt  size_local_extrafield;/* size of the local extra field */
	ZPOS64_T pos_local_extrafield;   /* position in the local extra field in read*/
	ZPOS64_T total_out_64;

	uLong crc32;                /* crc32 of all data uncompressed */
	uLong crc32_wait;           /* crc32 we must obtain after decompress all */
	ZPOS64_T rest_read_compressed; /* number of byte to be decompressed */
	ZPOS64_T rest_read_uncompressed;/*number of byte to be obtained after decomp*/
	zlib_filefunc64_32_def z_filefunc;
	voidpf filestream;        /* io structore of the zipfile */
	uLong compression_method;   /* compression method (0==store) */
	ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
	int   raw;
} file_in_zip64_read_info_s;

typedef struct
{
	zlib_filefunc64_32_def z_filefunc;
	int is64bitOpenFunction;
	voidpf filestream;        /* io structore of the zipfile */
	unz_global_info64 gi;       /* public global information */
	ZPOS64_T byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
	ZPOS64_T num_file;             /* number of the current file in the zipfile*/
	ZPOS64_T pos_in_central_dir;   /* pos of the current file in the central dir*/
	ZPOS64_T current_file_ok;      /* flag about the usability of the current file*/
	ZPOS64_T central_pos;          /* position of the beginning of the central dir*/

	ZPOS64_T size_central_dir;     /* size of the central directory  */
	ZPOS64_T offset_central_dir;   /* offset of start of central directory with
								   respect to the starting disk number */

	unz_file_info64 cur_file_info; /* public info about the current file in zip*/
	unz_file_info64_internal cur_file_info_internal; /* private info about it*/
	file_in_zip64_read_info_s* pfile_in_zip_read; /* structure about the current
										file if we are decompressing it */
	int encrypted;

	int isZip64;
} unz64_s;

#ifdef __cplusplus
}
#endif