System.IO.Streams.Zlib

Interface to zlib and gzip compression for Bytestrings and Builders

ByteString decompression

gunzip :: InputStream ByteString -> IO (InputStream ByteString)

Decompress an InputStream of strict ByteStrings from the gzip format

decompress :: InputStream ByteString -> IO (InputStream ByteString)

Decompress an InputStream of strict ByteStrings from the zlib format

ByteString compression

gzip :: CompressionLevel -> OutputStream ByteString -> IO (OutputStream ByteString)

Convert an OutputStream that consumes compressed ByteStrings into an OutputStream that consumes uncompressed ByteStrings in the gzip format

compress :: CompressionLevel -> OutputStream ByteString -> IO (OutputStream ByteString)

Convert an OutputStream that consumes compressed ByteStrings into an OutputStream that consumes uncompressed ByteStrings in the zlib format

Builder compression

gzipBuilder :: CompressionLevel -> OutputStream Builder -> IO (OutputStream Builder)

Convert an OutputStream that consumes compressed Builders into an OutputStream that consumes uncompressed Builders in the gzip format

compressBuilder :: CompressionLevel -> OutputStream Builder -> IO (OutputStream Builder)

Convert an OutputStream that consumes compressed Builders into an OutputStream that consumes uncompressed Builders in the zlib format

Compression level

newtype CompressionLevel

Parameter that defines the tradeoff between speed and compression ratio

Constructors

CompressionLevel Int

Instances

Eq CompressionLevel

Num CompressionLevel

Read CompressionLevel

Show CompressionLevel

defaultCompressionLevel :: CompressionLevel

A compression level that balances speed with compression ratio