zipfile-inflate64 0.1

Extract Enhanced Deflate ZIP archives with Python's zipfile API.

Extract Enhanced Deflate ZIP archives with Python’s zipfile API.

Installation

pip install zipfile-inflate64

Usage

Anywhere in a Python codebase:

import zipfile_inflate64  # This has the side effect of patching the zipfile module to support Enhanced Deflate

Alternatively, zipfile_inflate64 re-exports the zipfile API, as a convenience:

import zipfile_inflate64 as zipfile

zipfile.ZipFile(...)

Design Rationale

The Problem

Recent versions of Microsoft Windows Explorer [use Deflate64 compression when creating ZIP files larger than 2GB](https://github.com/dotnet/runtime/issues/17802#issuecomment-231808916). With the ubiquity of Windows and the ease of using “Sent to compressed folder”, a majority of newly-created large ZIP files use Deflate64 compression.

Solution

Python package [inflate64](https://pypi.org/project/inflate64/) provide compression(deflate) and decompression(inflate) by Enhanced Deflate, aka Deflate64, procedure.

To manage ZIP archive extraction operations, the Python standard library [zipfile](https://docs.python.org/3/library/zipfile.html) module provides the essential features and is already ubiquitous in availability and usage. However, zipfile is difficult to extend, as it hardcodes many conditionals for compression formats and does not provide capabilities for easily augmenting or replacing parts of it. Monkey-patching can overcome some of these problems, and the promise of a drop-in, API-compatible patch to a standard library module outweighed the engineering benefits of basing a solution off a more naturally extensible third-party ZIP manipulation package.

History

Zipfile-deflate64 realize extraction of zipfile compressed with DEFLATE64(tm) algorithm by binding with infback9 extension in zlib.

zipfile-inflate64 is a fork that use inflate64 python package to realize compress and decompress of archives.

Copyright & License

zipfile-inflate64 is distributed under GNU General Public License Version 3.0 or (in your choice) later.

zipfile-deflate64 is distributed under Apache-2.0 license. which authored by Kitware, Inc.