pipes-zlib-0.4.0/0000755000000000000000000000000012274266602011766 5ustar0000000000000000pipes-zlib-0.4.0/Setup.hs0000644000000000000000000000005612274266602013423 0ustar0000000000000000import Distribution.Simple main = defaultMain pipes-zlib-0.4.0/README.md0000644000000000000000000000060612274266602013247 0ustar0000000000000000# pipes-zlib Utilities to deal with zlib compressed streams the **pipes** and libraries. Check the source or rendered Haddocks for extensive documentation. This code is licensed under the terms of the so called **3-clause BSD license**. Read the file named ``LICENSE`` found in this same directory for details. See the ``PEOPLE`` file to learn about the people involved in this effort. pipes-zlib-0.4.0/LICENSE0000644000000000000000000000310412274266602012771 0ustar0000000000000000Copyright (c) 2012 Paolo Capriotti Copyright (c) 2013-2014 Renzo Carbonara All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of nor the names of other contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. pipes-zlib-0.4.0/PEOPLE0000644000000000000000000000036112274266602012675 0ustar0000000000000000The following people have participated in creating this library, either by directly contributing code or by providing thoughtful input in discussions about the library design. Renzo Carbonara Paolo Capriotti Oliver Charles Gabriel Gonzalez pipes-zlib-0.4.0/changelog0000644000000000000000000000103712274266602013641 0ustar0000000000000000# Version 0.4.0 * Backwards incompatible API. `compress` and `decompress` are now functions of `Producer'`s as they need to perform actions at the beginning and end of input. (Issue #3) # Version 0.3.1 * Dependency upper bounds. # Version 0.3.0 * Upgraded to work with pipes-4.0.0, creating a new backwards incompatible API. * Generalize base `IO` monad to `MonadIO`. # Version 0.2.0.0 * New backwards incompatible API. * Based on pipes-3.3 and zlib-bindings. # Up to version 0.1.0 * Based on pipes-core and zlib-bindings. pipes-zlib-0.4.0/pipes-zlib.cabal0000644000000000000000000000237412274266602015036 0ustar0000000000000000name: pipes-zlib version: 0.4.0 license: BSD3 license-file: LICENSE Copyright: Copyright (c) Paolo Capriotti 2012, Renzo Carbonara 2013-2014 author: Renzo Carbonara, Paolo Capriotti maintainer: renzocarbonaraλgmail.com stability: Experimental homepage: https://github.com/k0001/pipes-zlib bug-reports: https://github.com/k0001/pipes-zlib/issues category: Pipes, Compression build-type: Simple synopsis: Zlib compression and decompression for Pipes streams description: Zlib compression and decompression for Pipes streams cabal-version: >=1.8 extra-source-files: README.md PEOPLE changelog source-repository head type: git location: git://github.com/k0001/pipes-zlib.git library hs-source-dirs: src exposed-modules: Pipes.Zlib build-depends: base (>= 4.5 && < 5.0) , transformers (>= 0.2 && < 0.4) , pipes (>= 4.0 && < 4.2) , bytestring (>= 0.9.2.1) , zlib (>= 0.5 && < 0.7) , zlib-bindings (>= 0.1 && < 0.2) ghc-options: -Wall -O2 pipes-zlib-0.4.0/src/0000755000000000000000000000000012274266602012555 5ustar0000000000000000pipes-zlib-0.4.0/src/Pipes/0000755000000000000000000000000012274266602013635 5ustar0000000000000000pipes-zlib-0.4.0/src/Pipes/Zlib.hs0000644000000000000000000000603412274266602015074 0ustar0000000000000000{-# LANGUAGE RankNTypes #-} -- | This module exports utilities to compress and decompress @pipes@ streams -- using the zlib compression codec. module Pipes.Zlib ( -- * Streams decompress , compress -- * Compression level -- $ccz-re-export , ZC.defaultCompression , ZC.noCompression , ZC.bestSpeed , ZC.bestCompression , ZC.compressionLevel -- * Window size -- $ccz-re-export , ZC.defaultWindowBits , ZC.windowBits ) where import qualified Codec.Compression.Zlib as ZC import qualified Codec.Zlib as Z import Control.Monad (unless) import qualified Data.ByteString as B import Pipes -------------------------------------------------------------------------------- -- | Decompress bytes flowing from a 'Producer'. -- -- See the "Codec.Compression.Zlib" module for details about 'Z.WindowBits'. decompress :: MonadIO m => ZC.WindowBits -> Producer' B.ByteString m r -- ^ Compressed stream -> Producer' B.ByteString m r -- ^ Decompressed stream decompress wbits p0 = do inf <- liftIO $ Z.initInflate wbits r <- for p0 $ \bs -> do popper <- liftIO (Z.feedInflate inf bs) fromPopper popper bs <- liftIO $ Z.finishInflate inf unless (B.null bs) (yield bs) return r {-# INLINABLE decompress #-} -- | Compress bytes flowing from a 'Producer'. -- -- See the "Codec.Compression.Zlib" module for details about -- 'ZC.CompressionLevel' and 'ZC.WindowBits'. compress :: MonadIO m => ZC.CompressionLevel -> ZC.WindowBits -> Producer' B.ByteString m r -- ^ Decompressed stream -> Producer' B.ByteString m r -- ^ Compressed stream compress clevel wbits p0 = do def <- liftIO $ Z.initDeflate (fromCompressionLevel clevel) wbits r <- for p0 $ \bs -> do popper <- liftIO (Z.feedDeflate def bs) fromPopper popper mbs <- liftIO $ Z.finishDeflate def case mbs of Just bs -> yield bs Nothing -> return () return r {-# INLINABLE compress #-} -------------------------------------------------------------------------------- -- $ccz-re-export -- -- The following are re-exported from "Codec.Compression.Zlib" for your -- convenience. -------------------------------------------------------------------------------- -- Internal stuff -- | Produce values from the given 'Z.Popper' until exhausted. fromPopper :: MonadIO m => Z.Popper -> Producer' B.ByteString m () fromPopper pop = loop where loop = do mbs <- liftIO pop case mbs of Nothing -> return () Just bs -> yield bs >> loop {-# INLINABLE fromPopper #-} -- We need this function until the @zlib@ library hides the -- 'ZC.CompressionLevel' constructors in future version 0.7. fromCompressionLevel :: ZC.CompressionLevel -> Int fromCompressionLevel level = case level of ZC.DefaultCompression -> -1 ZC.NoCompression -> 0 ZC.BestSpeed -> 1 ZC.BestCompression -> 9 ZC.CompressionLevel n | n >= 0 && n <= 9 -> fromIntegral n _ -> error "CompressLevel must be in the range 1..9"