misc/quazip/unzip.h
author nemo
Mon, 05 Dec 2011 18:38:25 -0500
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/* unzip.h -- IO for uncompress .zip files using zlib
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   Version 1.01e, February 12th, 2005
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   Copyright (C) 1998-2005 Gilles Vollant
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   This unzip package allow extract file from .ZIP file, compatible with PKZip 2.04g
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     WinZip, InfoZip tools and compatible.
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   Multi volume ZipFile (span) are not supported.
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   Encryption compatible with pkzip 2.04g only supported
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   Old compressions used by old PKZip 1.x are not supported
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   I WAIT FEEDBACK at mail info@winimage.com
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   Visit also http://www.winimage.com/zLibDll/unzip.htm for evolution
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   Condition of use and distribution are the same than zlib :
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely, subject to the following restrictions:
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  1. The origin of this software must not be misrepresented; you must not
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     claim that you wrote the original software. If you use this software
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     in a product, an acknowledgment in the product documentation would be
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     appreciated but is not required.
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  2. Altered source versions must be plainly marked as such, and must not be
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     misrepresented as being the original software.
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  3. This notice may not be removed or altered from any source distribution.
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   Modified by Sergey A. Tachenov to integrate with Qt.
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*/
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/* for more info about .ZIP format, see
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      http://www.info-zip.org/pub/infozip/doc/appnote-981119-iz.zip
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      http://www.info-zip.org/pub/infozip/doc/
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   PkWare has also a specification at :
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      ftp://ftp.pkware.com/probdesc.zip
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*/
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#ifndef _unz_H
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#define _unz_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _ZLIB_H
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#include "zlib.h"
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#endif
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#ifndef _ZLIBIOAPI_H
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#include "ioapi.h"
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#endif
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#if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
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/* like the STRICT of WIN32, we define a pointer that cannot be converted
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    from (void*) without cast */
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typedef struct TagunzFile__ { int unused; } unzFile__;
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typedef unzFile__ *unzFile;
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#else
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typedef voidp unzFile;
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#endif
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#define UNZ_OK                          (0)
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#define UNZ_END_OF_LIST_OF_FILE         (-100)
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#define UNZ_ERRNO                       (Z_ERRNO)
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#define UNZ_EOF                         (0)
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#define UNZ_PARAMERROR                  (-102)
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#define UNZ_BADZIPFILE                  (-103)
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#define UNZ_INTERNALERROR               (-104)
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#define UNZ_CRCERROR                    (-105)
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/* tm_unz contain date/time info */
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typedef struct tm_unz_s
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{
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    uInt tm_sec;            /* seconds after the minute - [0,59] */
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    uInt tm_min;            /* minutes after the hour - [0,59] */
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    uInt tm_hour;           /* hours since midnight - [0,23] */
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    uInt tm_mday;           /* day of the month - [1,31] */
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    uInt tm_mon;            /* months since January - [0,11] */
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    uInt tm_year;           /* years - [1980..2044] */
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} tm_unz;
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/* unz_global_info structure contain global data about the ZIPfile
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   These data comes from the end of central dir */
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typedef struct unz_global_info_s
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{
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    uLong number_entry;         /* total number of entries in
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                       the central dir on this disk */
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    uLong size_comment;         /* size of the global comment of the zipfile */
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} unz_global_info;
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/* unz_file_info contain information about a file in the zipfile */
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typedef struct unz_file_info_s
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{
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    uLong version;              /* version made by                 2 bytes */
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    uLong version_needed;       /* version needed to extract       2 bytes */
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    uLong flag;                 /* general purpose bit flag        2 bytes */
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    uLong compression_method;   /* compression method              2 bytes */
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    uLong dosDate;              /* last mod file date in Dos fmt   4 bytes */
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    uLong crc;                  /* crc-32                          4 bytes */
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    uLong compressed_size;      /* compressed size                 4 bytes */
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    uLong uncompressed_size;    /* uncompressed size               4 bytes */
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    uLong size_filename;        /* filename length                 2 bytes */
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    uLong size_file_extra;      /* extra field length              2 bytes */
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    uLong size_file_comment;    /* file comment length             2 bytes */
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    uLong disk_num_start;       /* disk number start               2 bytes */
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    uLong internal_fa;          /* internal file attributes        2 bytes */
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    uLong external_fa;          /* external file attributes        4 bytes */
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    tm_unz tmu_date;
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} unz_file_info;
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extern int ZEXPORT unzStringFileNameCompare OF ((const char* fileName1,
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                                                 const char* fileName2,
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                                                 int iCaseSensitivity));
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/*
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   Compare two filename (fileName1,fileName2).
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   If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp)
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   If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi
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                                or strcasecmp)
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   If iCaseSenisivity = 0, case sensitivity is defaut of your operating system
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    (like 1 on Unix, 2 on Windows)
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*/
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extern unzFile ZEXPORT unzOpen OF((voidpf file));
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/*
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  Open a Zip file. path contain whatever zopen_file from the IO API
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  accepts. For Qt implementation it is a pointer to QIODevice, for
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  fopen() implementation it's a file name.
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     If the zipfile cannot be opened (file don't exist or in not valid), the
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       return value is NULL.
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     Else, the return value is a unzFile Handle, usable with other function
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       of this unzip package.
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*/
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extern unzFile ZEXPORT unzOpen2 OF((voidpf file,
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                                    zlib_filefunc_def* pzlib_filefunc_def));
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/*
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   Open a Zip file, like unzOpen, but provide a set of file low level API
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      for read/write the zip file (see ioapi.h)
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*/
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extern int ZEXPORT unzClose OF((unzFile file));
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/*
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  Close a ZipFile opened with unzipOpen.
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  If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
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    these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
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  return UNZ_OK if there is no problem. */
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extern int ZEXPORT unzGetGlobalInfo OF((unzFile file,
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                                        unz_global_info *pglobal_info));
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/*
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  Write info about the ZipFile in the *pglobal_info structure.
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  No preparation of the structure is needed
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  return UNZ_OK if there is no problem. */
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extern int ZEXPORT unzGetGlobalComment OF((unzFile file,
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                                           char *szComment,
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                                           uLong uSizeBuf));
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/*
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  Get the global comment string of the ZipFile, in the szComment buffer.
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  uSizeBuf is the size of the szComment buffer.
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  return the number of byte copied or an error code <0
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*/
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/***************************************************************************/
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/* Unzip package allow you browse the directory of the zipfile */
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extern int ZEXPORT unzGoToFirstFile OF((unzFile file));
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/*
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  Set the current file of the zipfile to the first file.
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  return UNZ_OK if there is no problem
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*/
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extern int ZEXPORT unzGoToNextFile OF((unzFile file));
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/*
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  Set the current file of the zipfile to the next file.
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  return UNZ_OK if there is no problem
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  return UNZ_END_OF_LIST_OF_FILE if the actual file was the latest.
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*/
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extern int ZEXPORT unzLocateFile OF((unzFile file,
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                     const char *szFileName,
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                     int iCaseSensitivity));
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/*
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  Try locate the file szFileName in the zipfile.
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  For the iCaseSensitivity signification, see unzStringFileNameCompare
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  return value :
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  UNZ_OK if the file is found. It becomes the current file.
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  UNZ_END_OF_LIST_OF_FILE if the file is not found
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*/
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/* ****************************************** */
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/* Ryan supplied functions */
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/* unz_file_info contain information about a file in the zipfile */
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typedef struct unz_file_pos_s
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{
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    uLong pos_in_zip_directory;   /* offset in zip file directory */
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    uLong num_of_file;            /* # of file */
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} unz_file_pos;
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extern int ZEXPORT unzGetFilePos(
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    unzFile file,
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    unz_file_pos* file_pos);
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extern int ZEXPORT unzGoToFilePos(
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    unzFile file,
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    unz_file_pos* file_pos);
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/* ****************************************** */
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extern int ZEXPORT unzGetCurrentFileInfo OF((unzFile file,
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                         unz_file_info *pfile_info,
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                         char *szFileName,
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                         uLong fileNameBufferSize,
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                         void *extraField,
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                         uLong extraFieldBufferSize,
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                         char *szComment,
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                         uLong commentBufferSize));
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/*
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  Get Info about the current file
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  if pfile_info!=NULL, the *pfile_info structure will contain somes info about
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        the current file
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  if szFileName!=NULL, the filemane string will be copied in szFileName
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            (fileNameBufferSize is the size of the buffer)
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  if extraField!=NULL, the extra field information will be copied in extraField
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            (extraFieldBufferSize is the size of the buffer).
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            This is the Central-header version of the extra field
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  if szComment!=NULL, the comment string of the file will be copied in szComment
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            (commentBufferSize is the size of the buffer)
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*/
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/***************************************************************************/
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/* for reading the content of the current zipfile, you can open it, read data
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   from it, and close it (you can close it before reading all the file)
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   */
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extern int ZEXPORT unzOpenCurrentFile OF((unzFile file));
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/*
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  Open for reading data the current file in the zipfile.
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  If there is no error, the return value is UNZ_OK.
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*/
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extern int ZEXPORT unzOpenCurrentFilePassword OF((unzFile file,
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                                                  const char* password));
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/*
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  Open for reading data the current file in the zipfile.
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  password is a crypting password
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  If there is no error, the return value is UNZ_OK.
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*/
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extern int ZEXPORT unzOpenCurrentFile2 OF((unzFile file,
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                                           int* method,
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                                           int* level,
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                                           int raw));
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/*
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  Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
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    if raw==1
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  *method will receive method of compression, *level will receive level of
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     compression
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  note : you can set level parameter as NULL (if you did not want known level,
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         but you CANNOT set method parameter as NULL
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*/
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extern int ZEXPORT unzOpenCurrentFile3 OF((unzFile file,
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                                           int* method,
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                                           int* level,
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                                           int raw,
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                                           const char* password));
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/*
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  Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
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    if raw==1
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  *method will receive method of compression, *level will receive level of
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     compression
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  note : you can set level parameter as NULL (if you did not want known level,
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         but you CANNOT set method parameter as NULL
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*/
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extern int ZEXPORT unzCloseCurrentFile OF((unzFile file));
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/*
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  Close the file in zip opened with unzOpenCurrentFile
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  Return UNZ_CRCERROR if all the file was read but the CRC is not good
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*/
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extern int ZEXPORT unzReadCurrentFile OF((unzFile file,
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                      voidp buf,
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                      unsigned len));
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/*
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  Read bytes from the current file (opened by unzOpenCurrentFile)
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  buf contain buffer where data must be copied
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  len the size of buf.
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  return the number of byte copied if somes bytes are copied
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  return 0 if the end of file was reached
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  return <0 with error code if there is an error
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    (UNZ_ERRNO for IO error, or zLib error for uncompress error)
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*/
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extern z_off_t ZEXPORT unztell OF((unzFile file));
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/*
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  Give the current position in uncompressed data
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*/
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extern int ZEXPORT unzeof OF((unzFile file));
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/*
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  return 1 if the end of file was reached, 0 elsewhere
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*/
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extern int ZEXPORT unzGetLocalExtrafield OF((unzFile file,
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                                             voidp buf,
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                                             unsigned len));
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/*
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  Read extra field from the current file (opened by unzOpenCurrentFile)
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  This is the local-header version of the extra field (sometimes, there is
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    more info in the local-header version than in the central-header)
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  if buf==NULL, it return the size of the local extra field
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  if buf!=NULL, len is the size of the buffer, the extra header is copied in
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    buf.
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  the return value is the number of bytes copied in buf, or (if <0)
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    the error code
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*/
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/***************************************************************************/
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/* Get the current file offset */
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extern uLong ZEXPORT unzGetOffset (unzFile file);
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/* Set the current file offset */
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extern int ZEXPORT unzSetOffset (unzFile file, uLong pos);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _unz_H */