Antoine Cœur
144 lines
5.5 KiB
C
144 lines
5.5 KiB
C
/* mz_unzip.h -- Zip manipulation
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Version 2.0.0, October 4th, 2017
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part of the MiniZip project
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Copyright (C) 2012-2017 Nathan Moinvaziri
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https://github.com/nmoinvaz/minizip
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Copyright (C) 2009-2010 Mathias Svensson
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Modifications for Zip64 support on both zip and unzip
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http://result42.com
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Copyright (C) 2007-2008 Even Rouault
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Modifications of Unzip for Zip64
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Copyright (C) 1998-2010 Gilles Vollant
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http://www.winimage.com/zLibDll/minizip.html
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This program is distributed under the terms of the same license as zlib.
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See the accompanying LICENSE file for the full text of the license.
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*/
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#ifndef _MZ_UNZIP_H
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#define _MZ_UNZIP_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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#include "mz_strm.h"
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/***************************************************************************/
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#ifndef MZ_METHOD
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# define MZ_METHOD_RAW (0)
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# define MZ_METHOD_DEFLATE (8)
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# define MZ_METHOD_BZIP2 (12)
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# define MZ_METHOD_LZMA (14)
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#endif
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/***************************************************************************/
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// Global data about the zip file that come from the end of central dir
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typedef struct mz_unzip_global_s
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{
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uint64_t number_entry; // total number of entries in the central dir on this disk
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uint32_t number_disk_with_CD; // number the the disk with central dir, used for spanning ZIP
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uint16_t comment_size; // size of the global comment of the zip file
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} mz_unzip_global;
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// Info about a file in the zip file at the central directory
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typedef struct mz_unzip_file_s
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{
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uint16_t version; // version made by 2 bytes
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uint16_t version_needed; // version needed to extract 2 bytes
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uint16_t flag; // general purpose bit flag 2 bytes
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uint16_t compression_method; // compression method 2 bytes
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uint32_t dos_date; // last mod file date in Dos fmt 4 bytes
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uint32_t crc; // crc-32 4 bytes
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uint64_t compressed_size; // compressed size 8 bytes
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uint64_t uncompressed_size; // uncompressed size 8 bytes
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uint16_t filename_size; // filename length 2 bytes
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uint16_t extrafield_size; // extra field length 2 bytes
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uint16_t comment_size; // file comment length 2 bytes
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uint32_t disk_num_start; // disk number start 4 bytes
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uint16_t internal_fa; // internal file attributes 2 bytes
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uint32_t external_fa; // external file attributes 4 bytes
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uint64_t disk_offset; // relative offset of local header 8 bytes
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char *filename; // filename string
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uint8_t *extrafield; // extrafield data
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char *comment; // comment string
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} mz_unzip_file;
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/***************************************************************************/
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// Opening and close a zip file
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// Open a zip file
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extern void* ZEXPORT mz_unzip_open(void *stream);
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// Close a zip file
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extern int ZEXPORT mz_unzip_close(void *handle);
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// Get global info about the zip file
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extern int ZEXPORT mz_unzip_get_global_info(void *handle, mz_unzip_global *global_info);
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// Get the global comment string of the zip file, in the comment buffer
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extern int ZEXPORT mz_unzip_get_global_comment(void *handle, char *comment, uint16_t comment_size);
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/***************************************************************************/
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// Reading the content of the current zip file, you can open it, read it, and close it
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extern int ZEXPORT mz_unzip_entry_open(void *handle, int raw, const char *password);
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// Open for reading data the current file in the zip file
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extern int ZEXPORT mz_unzip_entry_read(void *handle, void *buf, uint32_t len);
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// Read bytes from the current file
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extern int ZEXPORT mz_unzip_entry_get_info(void *handle, mz_unzip_file **file_info);
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// Get info about the current file
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extern int ZEXPORT mz_unzip_entry_get_extrafield_local(void *handle, void *buf, uint32_t len);
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// Read extra field from the current file
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//
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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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//
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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 buf.
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//
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// return number of bytes copied in buf, or (if <0) the error code
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extern int ZEXPORT mz_unzip_entry_close(void *handle);
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// Close the file in zip
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/***************************************************************************/
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// Navigate the directory of the zip file
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typedef int (*mz_filename_compare_cb)(void *handle, const char *filename1, const char *filename2);
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extern int ZEXPORT mz_unzip_locate_entry(void *file, const char *filename, mz_filename_compare_cb filename_compare_cb);
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// Locate the file with the specified name in the zip file
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//
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// if filename_compare_cb == NULL, it uses strcmp
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//
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// return MZ_OK if the file is found (it becomes the current file)
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// return MZ_END_OF_LIST if the file is not found
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extern int ZEXPORT mz_unzip_goto_first_entry(void *handle);
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// Go to the first entry in the zip file
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extern int ZEXPORT mz_unzip_goto_next_entry(void *handle);
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// Go to the next entry in the zip file or MZ_END_OF_LIST if reaching the end
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/***************************************************************************/
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#ifdef __cplusplus
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}
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#endif
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#endif /* _UNZ_H */
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