Problem:
In Haskell, you want to gzip-compress a string and write it to a file.
Solution:
We’ll use the zlib module for that. You might need to run
cabal install zlib
if you haven’t done that already.
Here’s the code that writes the string foobar
to the gzip-compressed file foo.gz
:
-- GZip compression import qualified Codec.Compression.GZip as GZip -- Needed to convert String literals to ByteString import Data.ByteString.Lazy.Char8(pack) -- ByteString.writeFile import qualified Data.ByteString.Lazy as ByteString main = do let compressedContent = pack "foobar" ByteString.writeFile "foo.gz" (GZip.compress compressedContent)has