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SickRage/lib/hachoir_parser/common/deflate.py

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from lib.hachoir_core.field import CompressedField
try:
from zlib import decompressobj, MAX_WBITS
class DeflateStream:
def __init__(self, stream, wbits=None):
if wbits:
self.gzip = decompressobj(-MAX_WBITS)
else:
self.gzip = decompressobj()
def __call__(self, size, data=None):
if data is None:
data = self.gzip.unconsumed_tail
return self.gzip.decompress(data, size)
class DeflateStreamWbits(DeflateStream):
def __init__(self, stream):
DeflateStream.__init__(self, stream, True)
def Deflate(field, wbits=True):
if wbits:
CompressedField(field, DeflateStreamWbits)
else:
CompressedField(field, DeflateStream)
return field
has_deflate = True
except ImportError:
def Deflate(field, wbits=True):
return field
has_deflate = False