Hopfli provides a pure interface to compress data using the Zopfli library.
Zopfli is a compression library released by Google in 2013, which can output
either a raw DEFLATE stream, or one wrapped into zlib or gzip formats. Under
default settings, the output produced by Zopfli is 3.7โ8.3% smaller than that of
gzip -9
, though the algorithm is 81 times slower.
Zopfli is distributed under the Apache 2.0 license.
import Codec.Compression.Hopfli
import Data.ByteString
import System.IO (stdin, stdout)
main :: IO ()
main = hGetContents stdin >>= hPut stdout . compressWith defaultCompressOptions GZIP
runGhc example.hs < README.md > README.md.gz