decompression Module

Streaming decompressors.

class wpull.decompression.DeflateDecompressor

Bases: wpull.decompression.SimpleGzipDecompressor

zlib decompressor with raw deflate detection.

This class doesn’t do any special. It only tries regular zlib and then tries raw deflate on the first decompress.

decompress(value)

flush()

class wpull.decompression.GzipDecompressor

Bases: wpull.decompression.SimpleGzipDecompressor

gzip decompressor with gzip header detection.

This class checks if the stream starts with the 2 byte gzip magic number. If it is not present, it returns the bytes unchanged.

decompress(value)

flush()

class wpull.decompression.SimpleGzipDecompressor

Bases: object

Streaming gzip decompressor.

The interface is like that of zlib.decompressobj (without some of the optional arguments, but it understands gzip headers and checksums.

decompress(value)

Decompress a chunk, returning newly-available data.

Some data may be buffered for later processing; flush must be called when there is no more input data to ensure that all data was processed.

flush()

Return any remaining buffered data not yet returned by decompress.

Also checks for errors such as truncated input. No other methods may be called on this object after flush.

wpull.decompression.gzip_uncompress(data, truncated=False)

Uncompress gzip data.

Parameters:

• data (bytes) – The gzip data.
• truncated (bool) – If True, the decompressor is not flushed.

This is a convenience function.

Returns:The inflated data. Return type:bytes Raises:zlib.error