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Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
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README
streamly-cassava
Stream CSV data in\/out using Cassava. Adapted from streaming-cassava.
For efficiency, operates on streams of strict ByteString chunks
(i.e. IsStream t => t m ByteString) rather than directly on streams of Word8.
The chunkStream function is useful for generating an input stream from a
handle.
Example usage:
import Streamly
import qualified Streamly.Prelude as S
import Streamly.Csv (decode, encode, chunkStream)
import System.IO
import qualified Data.Csv as Csv
import qualified Data.ByteString as BS
import Data.Vector (Vector)
main = do
h <- openFile "testfile.csv" ReadMode
let chunks = chunkStream h (64*1024)
recs = decode Csv.HasHeader chunks :: SerialT IO (Vector BS.ByteString)
withFile "dest.csv" WriteMode $ \ho ->
S.mapM_ (BS.hPut ho) $ encode Nothing recs