unzip.h
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上传日期:2020-07-06
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midi
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Unix_Linux
- /* unzip.h -- IO for uncompress .zip files using zlib
- Version 1.01e, February 12th, 2005
- Copyright (C) 1998-2005 Gilles Vollant
- This unzip package allow extract file from .ZIP file, compatible with PKZip 2.04g
- WinZip, InfoZip tools and compatible.
- Multi volume ZipFile (span) are not supported.
- Encryption compatible with pkzip 2.04g only supported
- Old compressions used by old PKZip 1.x are not supported
- I WAIT FEEDBACK at mail info@winimage.com
- Visit also http://www.winimage.com/zLibDll/unzip.htm for evolution
- 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.
- */
- /* for more info about .ZIP format, see
- http://www.info-zip.org/pub/infozip/doc/appnote-981119-iz.zip
- http://www.info-zip.org/pub/infozip/doc/
- PkWare has also a specification at :
- ftp://ftp.pkware.com/probdesc.zip
- */
- #ifndef _unz_H
- #define _unz_H
- #ifdef __cplusplus
- extern "C" {
- #endif
- #ifndef _ZLIB_H
- #include "zlib.h"
- #endif
- #ifndef _ZLIBIOAPI_H
- #include "ioapi.h"
- #endif
- #if defined(STRICTUNZIP) || defined(STRICTZIPUNZIP)
- /* like the STRICT of WIN32, we define a pointer that cannot be converted
- from (void*) without cast */
- typedef struct TagunzFile__ { int unused; } unzFile__;
- typedef unzFile__ *unzFile;
- #else
- typedef voidp unzFile;
- #endif
- #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;
- /* unz_global_info structure contain global data about the ZIPfile
- These data comes from the end of central dir */
- typedef struct unz_global_info_s
- {
- uLong 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_info;
- /* unz_file_info contain information about a file in the zipfile */
- typedef struct unz_file_info_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 */
- uLong compressed_size; /* compressed size 4 bytes */
- uLong uncompressed_size; /* uncompressed size 4 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_info;
- extern int ZEXPORT unzStringFileNameCompare OF ((const char* fileName1,
- const char* fileName2,
- int iCaseSensitivity));
- /*
- Compare two filename (fileName1,fileName2).
- If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp)
- If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi
- or strcasecmp)
- If iCaseSenisivity = 0, case sensitivity is defaut of your operating system
- (like 1 on Unix, 2 on Windows)
- */
- extern unzFile ZEXPORT unzOpen OF((const char *path));
- /*
- Open a Zip file. path contain the full pathname (by example,
- on a Windows XP computer "c:\zlib\zlib113.zip" or on an Unix computer
- "zlib/zlib113.zip".
- If the zipfile cannot be opened (file don't exist or in not valid), the
- return value is NULL.
- Else, the return value is a unzFile Handle, usable with other function
- of this unzip package.
- */
- extern unzFile ZEXPORT unzOpen2 OF((const char *path,
- zlib_filefunc_def* pzlib_filefunc_def));
- /*
- Open a Zip file, like unzOpen, but provide a set of file low level API
- for read/write the zip file (see ioapi.h)
- */
- extern int ZEXPORT unzClose OF((unzFile file));
- /*
- Close a ZipFile opened with unzipOpen.
- If there is files inside the .Zip opened with unzOpenCurrentFile (see later),
- these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
- return UNZ_OK if there is no problem. */
- extern int ZEXPORT unzGetGlobalInfo OF((unzFile file,
- unz_global_info *pglobal_info));
- /*
- Write info about the ZipFile in the *pglobal_info structure.
- No preparation of the structure is needed
- return UNZ_OK if there is no problem. */
- extern int ZEXPORT unzGetGlobalComment OF((unzFile file,
- char *szComment,
- uLong uSizeBuf));
- /*
- Get the global comment string of the ZipFile, in the szComment buffer.
- uSizeBuf is the size of the szComment buffer.
- return the number of byte copied or an error code <0
- */
- /***************************************************************************/
- /* Unzip package allow you browse the directory of the zipfile */
- extern int ZEXPORT unzGoToFirstFile OF((unzFile file));
- /*
- Set the current file of the zipfile to the first file.
- return UNZ_OK if there is no problem
- */
- extern int ZEXPORT 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.
- */
- extern int ZEXPORT 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
- */
- /* ****************************************** */
- /* Ryan supplied functions */
- /* unz_file_info contain information about a file in the zipfile */
- typedef struct unz_file_pos_s
- {
- uLong pos_in_zip_directory; /* offset in zip file directory */
- uLong num_of_file; /* # of file */
- } unz_file_pos;
- extern int ZEXPORT unzGetFilePos(
- unzFile file,
- unz_file_pos* file_pos);
- extern int ZEXPORT unzGoToFilePos(
- unzFile file,
- unz_file_pos* file_pos);
- /* ****************************************** */
- extern int ZEXPORT unzGetCurrentFileInfo OF((unzFile file,
- unz_file_info *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)
- */
- extern int ZEXPORT 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.
- */
- extern int ZEXPORT unzOpenCurrentFilePassword OF((unzFile file,
- const char* password));
- /*
- Open for reading data the current file in the zipfile.
- password is a crypting password
- If there is no error, the return value is UNZ_OK.
- */
- extern int ZEXPORT unzOpenCurrentFile2 OF((unzFile file,
- int* method,
- int* level,
- int raw));
- /*
- Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
- if raw==1
- *method will receive method of compression, *level will receive level of
- compression
- note : you can set level parameter as NULL (if you did not want known level,
- but you CANNOT set method parameter as NULL
- */
- extern int ZEXPORT unzOpenCurrentFile3 OF((unzFile file,
- int* method,
- int* level,
- int raw,
- const char* password));
- /*
- Same than unzOpenCurrentFile, but open for read raw the file (not uncompress)
- if raw==1
- *method will receive method of compression, *level will receive level of
- compression
- note : you can set level parameter as NULL (if you did not want known level,
- but you CANNOT set method parameter as NULL
- */
- extern int ZEXPORT 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
- */
- extern int ZEXPORT 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)
- */
- extern z_off_t ZEXPORT unztell OF((unzFile file));
- /*
- Give the current position in uncompressed data
- */
- extern int ZEXPORT unzeof OF((unzFile file));
- /*
- return 1 if the end of file was reached, 0 elsewhere
- */
- extern int ZEXPORT unzGetLocalExtrafield OF((unzFile file,
- voidp buf,
- unsigned len));
- /*
- Read extra field from the current file (opened by unzOpenCurrentFile)
- This is the local-header version of the extra field (sometimes, there is
- more info in the local-header version than in the central-header)
- if buf==NULL, it return the size of the local extra field
- if buf!=NULL, len is the size of the buffer, the extra header is copied in
- buf.
- the return value is the number of bytes copied in buf, or (if <0)
- the error code
- */
- /***************************************************************************/
- /* Get the current file offset */
- extern uLong ZEXPORT unzGetOffset (unzFile file);
- /* Set the current file offset */
- extern int ZEXPORT unzSetOffset (unzFile file, uLong pos);
- #ifdef __cplusplus
- }
- #endif
- #endif /* _unz_H */