def __init__(self):
if Zstd is None:
raise UnsupportedCompressionMethodError
self._buf = BufferedRW()
ctx = Zstd.ZstdCompressor() # type: ignore
self._compressor = ctx.stream_writer(self._buf)
self.flushed = False
def __init__(self, properties):
if Zstd is None or len(properties) not in [
3, 5
] or (properties[0], properties[1], 0) > Zstd.ZSTD_VERSION:
raise UnsupportedCompressionMethodError
self._buf = BufferedRW()
ctx = Zstd.ZstdDecompressor() # type: ignore
self._decompressor = ctx.stream_writer(self._buf)
def __init__(self, properties: bytes, blocksize: Optional[int] = None):
if not isinstance(properties, bytes):
raise UnsupportedCompressionMethodError
if len(properties) == 5:
level, mem = struct.unpack("<BL", properties)
elif len(properties) == 7:
level, mem, _, _ = struct.unpack("<BLBB", properties)
else:
raise UnsupportedCompressionMethodError
if blocksize:
self.block_size = blocksize
else:
self.block_size = get_default_blocksize()
self._buf = BufferedRW(self.block_size)
self._buf = BufferedRW()
self.decoder = None
self.level = level
self.mem = mem
self.initialized = False
def __init__(self, properties: bytes):
if Ppmd is None:
raise UnsupportedCompressionMethodError
if not isinstance(properties, bytes):
raise UnsupportedCompressionMethodError
if len(properties) == 5:
level, mem = struct.unpack("<BL", properties)
elif len(properties) == 7:
level, mem, _, _ = struct.unpack("<BLBB", properties)
else:
raise UnsupportedCompressionMethodError
self._buf = BufferedRW()
self.decoder = None
self.level = level
self.mem = mem
self.initialized = False
def __init__(self, level: int, mem: int):
if Ppmd is None:
raise UnsupportedCompressionMethodError
self._buf = BufferedRW()
self.encoder = Ppmd.Ppmd7Encoder(self._buf, level, mem) # type: ignore
def __init__(self, level: int, mem: int, blocksize: Optional[int] = None):
self._buf = BufferedRW(blocksize)
self.encoder = Ppmd.Ppmd7Encoder(self._buf, level, mem) # type: ignore
def __init__(self, level):
self._buf = BufferedRW()
ctx = zstandard.ZstdCompressor(level) # type: ignore
self._compressor = ctx.stream_writer(self._buf)
self.flushed = False