lz4

This release:

• Adds a return_bytes_read boolean option to lz4.frame.decompress and lz4.frame.decompress. When this is False, only the uncompressed data is returned. When this is True, a tuple is returned containing the uncompressed data and the number of bytes read of the input data.
• Remove the LZ4_VERSION attribute from the lz4 base module. Use the lz4.lz4version() function instead.
• Remove Python 2.6 support from the list in setup.py

This release brings

• Huge changes to the LZ4 Frame support which should now be considered beta quality
• A new pytest based test harness, and significantly re-worked testing
• An end to Python 2.6 support - no testing is currently done against Python 2.6 although the code probably does still work with Python 2.6 at this point in time.

This release bumps the bundled lz4 library files to version 1.8.0.

This release contains updates to setup.py to enable correct building against the Macports installed LZ4 library on OSX.

Key changes in this release:

• Update bundled LZ4 library to version 1.7.5
• When version 1.7.5 or later of the LZ4 library is in use we change the default compression level for HC (high_compression) mode to match that of upstream
• Add parameter to lz4.block[de]compress to optionally return bytearray
• lz4.block[de]compress now accept any source object which implements the buffer interface

This release reverts an API change such that the block compress/decompress functions now return a bytes object on Python 3 (and Python 2).

This release makes the block (de)compress functions more tolerant to the source argument past to them. The logic is now:

• First check if source is a bytearray and deal appropriately with that if needed
• If the source argument is not a bytearray cast it to a bytes object

This should give compatibility with 0.9.1 and earlier.

The only change in this release is that on Python 3 the block compress and decompress functions will accept either a bytes (string) object or a bytearray object (#16). Further, on Python 3, these functions return a bytearray object. Python 2 is unaffected.

This minor release includes:

• Allowing zero length data in the block compress method, and accepting zero length output in block decompress (#27)
• Update bundled py3c headers to release 0.8
• A fix to grab the GIL when malloc'ing in the frame decompress function
• An update to the bench.py script
• A few docstring fixes

This release features:

• Huge codebase cleanup up and rationalization
• A massive effort to document, including sphinx generated documentation
• A technology preview of the LZ4 frame protocol support

Changes since 0.8.1:

• Allow package to install on systems without pkg-config present

Changes since 0.7.0:

• Add support for building against system lz4 library (Jonathan Underwood)
• Update lz4 bundled files to r131 (Jonathan Underwood)
• Add preliminary (but non-functional) support for building with Visual Studio 2008 (keeely)
• Add LICENSE file (Matthew Rocklin)
• Add Travis support via .travis.yml file (Matthew Rocklin)
• Drop GIL during compress/decompress (Matthew Rocklin)
• Avoid directly including stdint.h (Matthew Rocklin)
• Add lz4version function to return the lz4 C library version (Jonathan Underwood)
• Export new compress_fast method (Antoine Martin)