| Safe Haskell | None |
|---|
Pipes.Zlib
Contents
Description
This module exports utilities to compress and decompress pipes streams
using the zlib compression codec.
- decompress :: MonadIO m => WindowBits -> Pipe ByteString ByteString m r
- compress :: MonadIO m => CompressionLevel -> WindowBits -> Pipe ByteString ByteString m r
- defaultCompression :: CompressionLevel
- noCompression :: CompressionLevel
- bestSpeed :: CompressionLevel
- bestCompression :: CompressionLevel
- compressionLevel :: Int -> CompressionLevel
- defaultWindowBits :: WindowBits
- windowBits :: Int -> WindowBits
Streams
decompress :: MonadIO m => WindowBits -> Pipe ByteString ByteString m rSource
Decompress bytes flowing downstream.
See the Codec.Compression.Zlib module for details about WindowBits.
compress :: MonadIO m => CompressionLevel -> WindowBits -> Pipe ByteString ByteString m rSource
Compress bytes flowing downstream.
See the Codec.Compression.Zlib module for details about
CompressionLevel and WindowBits.
Compression level
The following are re-exported from Codec.Compression.Zlib for your convenience.
defaultCompression :: CompressionLevel
The default compression level is 6 (that is, biased towards higher compression at expense of speed).
noCompression :: CompressionLevel
No compression, just a block copy.
The fastest compression method (less compression)
bestCompression :: CompressionLevel
The slowest compression method (best compression).
compressionLevel :: Int -> CompressionLevel
A specific compression level between 0 and 9.
Window size
The following are re-exported from Codec.Compression.Zlib for your convenience.
defaultWindowBits :: WindowBits
The default WindowBits is 15 which is also the maximum size.
windowBits :: Int -> WindowBits
A specific compression window size, specified in bits in the range 8..15