mirror of
https://github.com/google/brotli.git
synced 2024-11-23 18:03:24 +08:00
58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
# Copyright 2016 The Brotli Authors. All rights reserved.
|
|
#
|
|
# Distributed under MIT license.
|
|
# See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
|
|
|
|
"""Functions to compress and decompress data using the Brotli library."""
|
|
|
|
import _brotli
|
|
|
|
# The library version.
|
|
version = __version__ = _brotli.__version__
|
|
|
|
# The compression mode.
|
|
MODE_GENERIC = _brotli.MODE_GENERIC
|
|
MODE_TEXT = _brotli.MODE_TEXT
|
|
MODE_FONT = _brotli.MODE_FONT
|
|
|
|
# The Compressor object.
|
|
Compressor = _brotli.Compressor
|
|
|
|
# The Decompressor object.
|
|
Decompressor = _brotli.Decompressor
|
|
|
|
# Compress a byte string.
|
|
def compress(string, mode=MODE_GENERIC, quality=11, lgwin=22, lgblock=0):
|
|
"""Compress a byte string.
|
|
|
|
Args:
|
|
string (bytes): The input data.
|
|
mode (int, optional): The compression mode; value 0 should be used for
|
|
generic input (MODE_GENERIC); value 1 might be beneficial for UTF-8 text
|
|
input (MODE_TEXT); value 2 tunes encoder for WOFF 2.0 data (MODE_FONT).
|
|
Defaults to 0.
|
|
quality (int, optional): Controls the compression-speed vs compression-
|
|
density tradeoff. The higher the quality, the slower the compression.
|
|
Range is 0 to 11. Defaults to 11.
|
|
lgwin (int, optional): Base 2 logarithm of the sliding window size. Range
|
|
is 10 to 24. Defaults to 22.
|
|
lgblock (int, optional): Base 2 logarithm of the maximum input block size.
|
|
Range is 16 to 24. If set to 0, the value will be set based on the
|
|
quality. Defaults to 0.
|
|
|
|
Returns:
|
|
The compressed byte string.
|
|
|
|
Raises:
|
|
brotli.error: If arguments are invalid, or compressor fails.
|
|
"""
|
|
compressor = Compressor(mode=mode, quality=quality, lgwin=lgwin,
|
|
lgblock=lgblock)
|
|
return compressor.process(string) + compressor.finish()
|
|
|
|
# Decompress a compressed byte string.
|
|
decompress = _brotli.decompress
|
|
|
|
# Raised if compression or decompression fails.
|
|
error = _brotli.error
|