Commit 503cf3d

This module allows to decompress binary data compressed with

`DEFLATE algorithm <https://en.wikipedia.org/wiki/DEFLATE>`_

(commonly used in zlib library and gzip archiver). Compression

.. function:: decompress(data, wbits=0, bufsize=0)

Return decompressed *data* as bytes. *wbits* is DEFLATE dictionary window

size used during compression (8-15, the dictionary size is power of 2 of

that value). Additionally, if value is positive, *data* is assumed to be

zlib stream (with zlib header). Otherwise, if it's negative, it's assumed

to be raw DEFLATE stream. *bufsize* parameter is for compatibility with

CPython and is ignored.

.. class:: DecompIO(stream, wbits=0)

Create a stream wrapper which allows transparent decompression of

compressed data in another *stream*. This allows to process compressed

streams with data larger than available heap size. In addition to

values described in :func:`decompress`, *wbits* may take values

24..31 (16 + 8..15), meaning that input stream has gzip header.

.. admonition:: Difference to CPython

:class: attention

This class is MicroPython extension. It's included on provisional

basis and may be changed considerably or removed in later versions.