/* unzip.h -- IO for uncompress .zip files using zlib
   Version 1.1, February 14h, 2010
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications of Unzip for Zip64
         Copyright (C) 2007-2008 Even Rouault

         Modifications for Zip64 support on both zip and unzip
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

         ---------------------------------------------------------------------------------

        Condition of use and distribution are the same than zlib :

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  ---------------------------------------------------------------------------------

        Changes

        See header of unzip64.c

*/

#ifndef _unz64_H
#define _unz64_H

#ifdef __cplusplus
extern "C" {
#endif

#ifndef _ZLIB_H
#include "zlib.h"
#endif

/* merged from ioapi.h */
#include <stdint.h>
typedef uint64_t ZPOS64_T;

/* Maximum unsigned 32-bit value used as placeholder for zip64 */
/* cherry-picked to fix PR18390 */
#ifndef MAXU32
#define MAXU32 (0xffffffff)
#endif

/* apparently needed for zlib > 1.2.5 with --with-system-zlib, PR#14951 */
#ifndef OF
# define OF(x) x
#endif

#define ZLIB_FILEFUNC_SEEK_CUR (1)
#define ZLIB_FILEFUNC_SEEK_END (2)
#define ZLIB_FILEFUNC_SEEK_SET (0)

#define ZLIB_FILEFUNC_MODE_READ      (1)
#define ZLIB_FILEFUNC_MODE_WRITE     (2)
#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)

#define ZLIB_FILEFUNC_MODE_EXISTING (4)
#define ZLIB_FILEFUNC_MODE_CREATE   (8)

static voidpf fopen_func(const void* filename, int mode);
static ZPOS64_T ftell_func(voidpf stream);
static int fseek_func(voidpf stream, ZPOS64_T offset, int origin);
static size_t fread_func(voidpf stream, void* buf, size_t size);
static int fclose_func(voidpf stream);
static int ferror_func(voidpf stream);
/* end of merge */

#ifdef HAVE_BZIP2
#include "bzlib.h"
#endif

#define Z_BZIP2ED 12

typedef voidp unzFile;

#define UNZ_OK                          (0)
#define UNZ_END_OF_LIST_OF_FILE         (-100)
#define UNZ_ERRNO                       (Z_ERRNO)
#define UNZ_EOF                         (0)
#define UNZ_PARAMERROR                  (-102)
#define UNZ_BADZIPFILE                  (-103)
#define UNZ_INTERNALERROR               (-104)
#define UNZ_CRCERROR                    (-105)

/* tm_unz contain date/time info */
typedef struct tm_unz_s
{
    uInt tm_sec;            /* seconds after the minute - [0,59] */
    uInt tm_min;            /* minutes after the hour - [0,59] */
    uInt tm_hour;           /* hours since midnight - [0,23] */
    uInt tm_mday;           /* day of the month - [1,31] */
    uInt tm_mon;            /* months since January - [0,11] */
    uInt tm_year;           /* years - [1980..2044] */
} tm_unz;

typedef struct unz_global_info64_s
{
    ZPOS64_T number_entry;         /* total number of entries in
                                     the central dir on this disk */
    uLong size_comment;         /* size of the global comment of the zipfile */
} unz_global_info64;


typedef struct unz_file_info64_s
{
    uLong version;              /* version made by                 2 bytes */
    uLong version_needed;       /* version needed to extract       2 bytes */
    uLong flag;                 /* general purpose bit flag        2 bytes */
    uLong compression_method;   /* compression method              2 bytes */
    uLong dosDate;              /* last mod file date in Dos fmt   4 bytes */
    uLong crc;                  /* crc-32                          4 bytes */
    ZPOS64_T compressed_size;   /* compressed size                 8 bytes */
    ZPOS64_T uncompressed_size; /* uncompressed size               8 bytes */
    uLong size_filename;        /* filename length                 2 bytes */
    uLong size_file_extra;      /* extra field length              2 bytes */
    uLong size_file_comment;    /* file comment length             2 bytes */

    uLong disk_num_start;       /* disk number start               2 bytes */
    uLong internal_fa;          /* internal file attributes        2 bytes */
    uLong external_fa;          /* external file attributes        4 bytes */

    tm_unz tmu_date;
} unz_file_info64;


static int unzStringFileNameCompare OF ((const char* fileName1,
					 const char* fileName2,
					 int iCaseSensitivity));

static unzFile unzOpen64 OF((const void *path));


static int unzClose OF((unzFile file));

static int unzGetGlobalInfo64 OF((unzFile file,
                                        unz_global_info64 *pglobal_info));


/***************************************************************************/
/* Unzip package allow you browse the directory of the zipfile */

static int unzGoToFirstFile OF((unzFile file));
/*
  Set the current file of the zipfile to the first file.
  return UNZ_OK if there is no problem
*/

static int unzGoToNextFile OF((unzFile file));
/*
  Set the current file of the zipfile to the next file.
  return UNZ_OK if there is no problem
  return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
*/

static int unzLocateFile OF((unzFile file,
			     const char *szFileName,
			     int iCaseSensitivity));
/*
  Try locate the file szFileName in the zipfile.
  For the iCaseSensitivity signification, see unzStringFileNameCompare

  return value :
  UNZ_OK if the file is found. It becomes the current file.
  UNZ_END_OF_LIST_OF_FILE if the file is not found
*/



/* ****************************************** */

static int unzGetCurrentFileInfo64 OF((unzFile file,
                         unz_file_info64 *pfile_info,
                         char *szFileName,
                         uLong fileNameBufferSize,
                         void *extraField,
                         uLong extraFieldBufferSize,
                         char *szComment,
                         uLong commentBufferSize));
/*
  Get Info about the current file
  if pfile_info!=NULL, the *pfile_info structure will contain somes info about
        the current file
  if szFileName!=NULL, the filemane string will be copied in szFileName
            (fileNameBufferSize is the size of the buffer)
  if extraField!=NULL, the extra field information will be copied in extraField
            (extraFieldBufferSize is the size of the buffer).
            This is the Central-header version of the extra field
  if szComment!=NULL, the comment string of the file will be copied in szComment
            (commentBufferSize is the size of the buffer)
*/


/***************************************************************************/
/* for reading the content of the current zipfile, you can open it, read data
   from it, and close it (you can close it before reading all the file)
   */

static int unzOpenCurrentFile OF((unzFile file));
/*
  Open for reading data the current file in the zipfile.
  If there is no error, the return value is UNZ_OK.
*/

static int unzCloseCurrentFile OF((unzFile file));
/*
  Close the file in zip opened with unzOpenCurrentFile
  Return UNZ_CRCERROR if all the file was read but the CRC is not good
*/

static int unzReadCurrentFile OF((unzFile file,
				  voidp buf,
				  unsigned len));
/*
  Read bytes from the current file (opened by unzOpenCurrentFile)
  buf contain buffer where data must be copied
  len the size of buf.

  return the number of byte copied if somes bytes are copied
  return 0 if the end of file was reached
  return <0 with error code if there is an error
    (UNZ_ERRNO for IO error, or zLib error for uncompress error)
*/


#ifdef __cplusplus
}
#endif

#endif /* _unz64_H */
