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lzx.py

00001 '''
LZX compression/decompression wrapper.
'''
from __future__ import with_statement

__license__   = 'GPL v3'
__copyright__ = '2008, Marshall T. Vandegrift <llasram@gmail.com>'

from calibre import plugins

_lzx, _error = plugins['lzx']
if _lzx is None:
    raise RuntimeError('Failed to load the lzx plugin: %s' % _error)

__all__ = ['Compressor', 'Decompressor', 'LZXError']

LZXError = _lzx.LZXError
Compressor = _lzx.Compressor

class Decompressor(object):
    def __init__(self, wbits):
        self.wbits = wbits
        self.blocksize = 1 << wbits
        _lzx.init(wbits)

    def decompress(self, data, outlen):
        return _lzx.decompress(data, outlen)

    def reset(self):
        return _lzx.reset()

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