linermyweb.blogg.se - Xz compression 7z

#XZ COMPRESSION 7Z ARCHIVE#
#XZ COMPRESSION 7Z CODE#
#XZ COMPRESSION 7Z ZIP#

The mode argument can be either "r" for reading (default), "w" for When wrapping anĮxisting file object, the wrapped file will not be closed when the Object to wrap, or the name of the file to open (as a str,īytes or path-like object). The filename argument specifies either the file Open an LZMA-compressed file in binary mode.Īn LZMAFile can wrap an already-open file object, or operateĭirectly on a named file. LZMAFile ( filename = None, mode = 'r', *, format = None, check = - 1, preset = None, filters = None ) ¶ Io.TextIOWrapper instance with the specified encoding, errorĬhanged in version 3.6: Accepts a path-like object. In this case, the encoding,Įrrors and newline arguments must not be provided.įor text mode, a LZMAFile object is created, and wrapped in an When opening a file for writing, the format, check, preset andįilters arguments have the same meanings as for LZMACompressor.įor binary mode, this function is equivalent to the LZMAFileĬonstructor: LZMAFile(filename, mode. The same meanings as for LZMADecompressor. When opening a file for reading, the format and filters arguments have "x", "xb", "a" or "ab" for binary mode, or "rt", The mode argument can be any of "r", "rb", "w", "wb", Which case the named file is opened, or it can be an existing file object The filename argument can be either an actual file name (given as a Open an LZMA-compressed file in binary or text mode, returning a file open ( filename, mode = 'rb', *, format = None, check = - 1, preset = None, filters = None, encoding = None, errors = None, newline = None ) ¶ Reading and writing compressed files ¶ lzma. This exception is raised when an error occurs during compression orĭecompression, or while initializing the compressor/decompressor state. Thread-safe, so if you need to use a single LZMAFile instanceįrom multiple threads, it is necessary to protect it with a lock. Note that LZMAFile and bz2.BZ2File are not The interface provided by this module is very similar to that of the bz2 Xz utility, as well as raw compressed streams. HFS and APFS archives: 7-Zip incorrectly decoded uncompressed blocks (64 KiB) in compressed forks.ĭownload: 7-Zip 23.00 (64-bit) | 1.This module provides classes and convenience functions for compressing andĭecompressing data using the LZMA compression algorithm.ext4 archives: 7-Zip couldn't correctly extract symbolic link to directory from ext4 archives.

#XZ COMPRESSION 7Z ZIP#

ZIP archives: if multithreaded zip compression was performed with more than one file to stdout stream (-so switch), 7-zip didn't write "data descriptor" for some files.And the drag-and-drop operation with right button of mouse now is supported for some cases.

#XZ COMPRESSION 7Z CODE#

There are changes in code for the drag-and-drop operations to and from 7-Zip File Manager.

There are optimizations in code for 7-Zip's context menu in Explorer: the speed of preparing of the menu showing was improved for cases when big number of files were selected by external program for context menu that contains 7-Zip menu commands.

It allows to avoid the failures for cases with big number of volumes, bacause there is a limitation for number of open files allowed for a single program in Linux and macOS.

7-Zip for Linux and macOS now can reduce the number of simultaneously open files, when 7-Zip opens, extracts or creates multivolume archive.

#XZ COMPRESSION 7Z ARCHIVE#

Previous versions kept all volumes in open state until the end of the archive creation.

When new 7-Zip creates multivolume archive, 7-Zip keeps in open state only volumes that still can be changed.

Some changes and optimizations in WIM creation code.

It can increase compression ratio for executable files larger than 64 MiB.

Default section size for BCJ2 filter was changed from 64 MiB to 240 MiB.

Previous versions by default used x86 filter BCJ or BCJ2 for all exe/dll files.

ARM64 filter for ARM64 executable files.

BCJ or BCJ2 filter for x86 executable files,.

Also 7-Zip now parses executable files (that have exe and dll filename extensions) before compressing, and it selects appropriate filter for each parsed file:.

ARM64 filter can increase compression ratio for data containing executable files compiled for ARM64 (AArch64) architecture.

7-Zip now can use new ARM64 filter for compression to 7z and xz archives.

Self-extracting capability for 7z format.Strong AES-256 encryption in 7z and ZIP formats.Compression ratio for ZIP and GZIP formats: 2-10 % better than the ratio provided by PKZip and WinZip.High compression ratio in 7z format with LZMA compression.