compression.py 文件源码

def CompressLZMA(string):
    """
    CompressBrotli(string) -> str
    Returns without delimiters the given string compressed \
using the lzstring compression method.

    """
    compressed = lzma.compress(
        string.encode("ascii"),
        format=lzma.FORMAT_RAW,
        filters=[{'id': lzma.FILTER_LZMA2, 'preset': 9 | lzma.PRESET_EXTREME}]
    )
    number = 1
    for c in compressed:
        number = number * 256 + c
    result = ""
    while number:
        result = Codepage[number % 255] + result
        number //= 255
    return Codepage[LZMA_ENCODING] + result