symantic-http-pipes (empty) → 0.0.0.20190324

raw patch · 4 files changed

+985/−0 lines, 4 filesdep +basedep +base64-bytestringdep +bytestring

Dependencies added: base, base64-bytestring, bytestring, containers, http-api-data, http-media, http-types, lens-family-core, monad-classes, network-uri, pipes, pipes-bytestring, pipes-group, pipes-parse, pipes-safe, stm, symantic-http, text, time, transformers, word8

Files

• COPYING +674/−0
• Symantic/HTTP/Pipes.hs +215/−0
• stack.yaml +10/−0
• symantic-http-pipes.cabal +86/−0

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@@ -0,0 +1,215 @@+{-# LANGUAGE OverloadedStrings #-}+{-# LANGUAGE RankNTypes #-}+{-# OPTIONS_GHC -Wno-orphans #-}+module Symantic.HTTP.Pipes where++import Control.Arrow (first, right)+import Control.Monad (Monad(..))+import Control.Monad.Trans.Class (MonadTrans(..))+import Data.Bool+import Data.Either (Either(..))+import Data.Eq (Eq(..))+import Data.Function (($), (.))+import Data.Functor ((<$>))+import Data.Maybe (Maybe(..))+import Data.Ord (Ord(..))+import Data.Semigroup (Semigroup(..))+import Data.String (String, IsString(..))+import Data.Word (Word8)+import Prelude (fromIntegral, Num(..))+import System.IO (IO)+import Text.Show (Show(..))+import qualified Control.Monad.Classes as MC+import qualified Data.ByteString as BS+import qualified Data.ByteString.Lazy as BSL+import qualified Data.ByteString.Lazy.Char8 as BSL8+import qualified Data.Char as Char+import qualified Data.List as List+import qualified Lens.Family as Lens+import qualified Lens.Family.State.Strict as Lens+import qualified Pipes as P+import qualified Pipes.ByteString as Pbs+import qualified Pipes.Group as Pg+import qualified Pipes.Parse as Pp+import qualified Pipes.Safe as Ps++import Symantic.HTTP.API++instance IsString () where+	fromString _ = ()++-- | Pass any executable effect to the underlying 'Monad'.+type instance MC.CanDo (P.Effect m) (MC.EffExec w) = 'False+-- | Pass any executable effect to the underlying 'Monad'.+type instance MC.CanDo (P.Proxy a' a b' b m) (MC.EffExec w) = 'False++type instance FramingMonad  (P.Producer a m r) = m+type instance FramingYield  (P.Producer a m r) = a+type instance FramingReturn (P.Producer a m r) = r++type instance FramingMonad  (P.ListT m a) = m+type instance FramingYield  (P.ListT m a) = a+type instance FramingReturn (P.ListT m a) = ()++-- | Produce 'BS.ByteString' from a 'Monad'.+produceBS ::+ IsString r =>+ Monad m =>+ m BS.ByteString -> P.Producer' BS.ByteString m r+produceBS mbs = go+	where+	go = do+		bs <- lift mbs+		if BS.null bs+		then return ""+		else do+			P.yield bs+			go++-- * 'NoFraming'+instance FramingEncode NoFraming (P.Producer a IO r) where+	framingEncode _framing mimeEnc p =+		right (first mimeEnc) <$> P.next p+instance FramingEncode NoFraming (P.Producer a (Ps.SafeT IO) r) where+	framingEncode _framing mimeEnc p =+		right (first mimeEnc) <$> Ps.runSafeT (P.next p)+instance FramingEncode NoFraming (P.ListT IO a) where+	framingEncode _framing mimeEnc p =+		right (\(a,n) -> (mimeEnc a, P.Select n)) <$> P.next (P.enumerate p)+instance IsString r => FramingDecode NoFraming (P.Producer a m r) where+	framingDecode _framing mimeDec mbs =+		-- TODO: use drawAll+		produceBS mbs P.>-> go+		where go = do+			bs <- P.await+			case mimeDec $ BSL.fromStrict bs of+			 Left err -> return $ fromString err+			 Right a -> P.yield a >> go++-- * 'NewlineFraming'+-- TODO: see how to use Pbs._unlines?+instance FramingEncode NewlineFraming (P.Producer a IO r) where+	framingEncode _framing mimeEnc p =+		right (first (newlineEncode mimeEnc))+		 <$> P.next p+instance FramingEncode NewlineFraming (P.Producer a (Ps.SafeT IO) r) where+	framingEncode _framing mimeEnc p =+		right (first (newlineEncode mimeEnc))+		 <$> Ps.runSafeT (P.next p)+instance IsString r => FramingDecode NewlineFraming (P.Producer a m r) where+	framingDecode _framing mimeDec mbs =+		Pg.concats $+		Pg.maps+		 (\p -> P.for p $ \bs ->+			case mimeDec $ BSL.fromStrict bs of+			 Left _err -> return ()+			 Right a  -> P.yield a) $+		Lens.view Pbs.lines $+		produceBS mbs++newlineEncode :: (a -> BSL.ByteString) -> a -> BSL.ByteString+newlineEncode mimeEnc a = mimeEnc a <> BSL.singleton (fromIntegral (Char.ord '\n'))++instance FramingEncode NetstringFraming (P.Producer a IO r) where+	framingEncode _framing mimeEnc p =+		right (first (encodeNetstring mimeEnc))+		 <$> P.next p+instance FramingEncode NetstringFraming (P.Producer a (Ps.SafeT IO) r) where+	framingEncode _framing mimeEnc p =+		right (first (encodeNetstring mimeEnc))+		 <$> Ps.runSafeT (P.next p)+instance IsString r => FramingDecode NetstringFraming (P.Producer a m r) where+	framingDecode _framing mimeDec mbs =+		Pg.concats $+		parseMany+		 (Pp.execStateT $ decodeNetstring @r mimeDec)+		 (produceBS mbs)++digit0, digit9 :: Word8+colon, comma :: Word8+newline :: Word8+digit0  = fromIntegral (Char.ord '0')+digit9  = fromIntegral (Char.ord '9')+colon   = fromIntegral (Char.ord ':')+comma   = fromIntegral (Char.ord ',')+newline = fromIntegral (Char.ord '\n')++encodeNetstring :: (a -> BSL.ByteString) -> a -> BSL.ByteString+encodeNetstring mimeEnc a =+	let bs = mimeEnc a in+	BSL8.pack (show (BSL8.length bs))+	 <> ":" <> bs <> ","++decodeNetstring ::+ IsString r =>+ Monad m =>+ (BSL.ByteString -> Either String a) ->+ ParserP BS.ByteString a m r+decodeNetstring mimeDec = do+	lenBSs <- Lens.zoom (Pbs.span (\b -> digit0 <= b && b <= digit9)) drawAllP+	case lenBSs >>= BS.unpack of+	 [] -> return "empty length"+	 w0:_:_ | w0 == digit0 -> return "leading zero"+	 lenWs -> do+		let len = List.foldl' (\acc d -> acc * 10 + (fromIntegral d - digit0)) 0 lenWs+		colonW <- drawByteP+		if colonW /= Just colon+		then return "colon expected"+		else do+			-- TODO: make mimeDecode directly able to use Pipes?+			dataBS <- BSL.fromChunks <$> Lens.zoom (Pbs.splitAt len) drawAllP+			commaW <- drawByteP+			if commaW /= Just comma+			then return "comma expected"+			else do+				case mimeDec dataBS of+				 Left err -> return $ fromString err+				 Right a -> do+					yieldP a+					decodeNetstring mimeDec++-- * Type 'P.Parser'++-- | A 'P.Parser', which is itself a 'P.Producer',+-- and thus can 'yieldP' immediately.+type ParserP inp out m r =+ forall x. Pp.StateT (P.Producer inp m x) (P.Producer out m) r++yieldP :: Monad m => out -> ParserP inp out m ()+yieldP = lift . P.yield++drawP :: Monad m => ParserP inp out m (Maybe inp)+drawP = P.hoist lift Pp.draw++drawAllP :: Monad m => ParserP inp out m [inp]+drawAllP = P.hoist lift Pp.drawAll++drawByteP :: Monad m => ParserP BS.ByteString out m (Maybe Word8)+drawByteP = P.hoist lift Pbs.drawByte++unDrawP :: Monad m => inp -> ParserP inp out m ()+unDrawP = P.hoist lift . Pp.unDraw++-- | @'parseMany f'@ groups a 'P.Producer' of 'BS.ByteString's+-- into a series of 'P.Producer's delimited by f,+-- where the delimiter is dropped+parseMany ::+ Monad m =>+ (P.Producer a m r -> P.Producer b m (P.Producer a m r)) ->+ P.Producer a m r ->+ Pg.FreeT (P.Producer b m) m r+parseMany f = Pg.FreeT . go0+	where+	go0 p = do+		P.next p >>= \case+		 Left r -> return (Pg.Pure r)+		 Right (bs, p') -> return $ Pg.Free (go1 (P.yield bs >> p'))+	go1 p = Pg.FreeT . go0 <$> f p++{-+-- * Type |Lens'|+-- | Package agnostic lens.+type Lens' a b = forall f . Functor f => (b -> f b) -> (a -> f a)+(^.) :: a -> ((b -> Constant b b) -> (a -> Constant b a)) -> b+a ^. lens = getConstant (lens Constant a)+-}

@@ -0,0 +1,10 @@+resolver: lts-12.26+packages:+- '.'+- location: '../symantic-http'+  extra-dep: true+extra-deps:+- http-api-data-0.4@sha256:ad69f7cd0d1e7723abfbed6f88ac987bdf75a402b29de161eb867c6131c9d427+- monad-classes-0.3.2.2@sha256:793faead28dafb47f115c4dec877ce3e3ffab604f134d852652385632ea0923f+nix:+  packages: [zlib]

@@ -0,0 +1,86 @@+name: symantic-http-pipes+-- PVP:  +-+------- breaking API changes+--       | | +----- non-breaking API additions+--       | | | +--- code changes with no API change+version: 0.0.0.20190324+category: Protocol+synopsis: Streaming support through pipes for symantic-http+description: +  This library provides orphan instances gluing+  <https://hackage.haskell.org/package/symantic-http symantic-http>+  to the streaming engine <https://hackage.haskell.org/package/pipes pipes>+  (allowing to (safely) run effects (eg. in IO) during an HTTP transfer).+  .+  For learning how to use this library,+  you can read the demo example+  in <git://git.autogeree.net/symantic-http symantic-http.git>.+extra-doc-files:+license: GPL-3+license-file: COPYING+stability: experimental+author:      Julien Moutinho <julm+symantic-http@autogeree.net>+maintainer:  Julien Moutinho <julm+symantic-http@autogeree.net>+bug-reports: Julien Moutinho <julm+symantic-http@autogeree.net>+-- homepage:++build-type: Simple+cabal-version: 1.24+tested-with: GHC==8.4.4+extra-source-files:+  stack.yaml+extra-tmp-files:++Source-Repository head+  location: git://git.autogeree.net/symantic-http+  type:     git++Library+  exposed-modules:+    Symantic.HTTP.Pipes+  default-language: Haskell2010+  default-extensions:+    AllowAmbiguousTypes+    DataKinds+    FlexibleContexts+    FlexibleInstances+    InstanceSigs+    LambdaCase+    MultiParamTypeClasses+    NamedFieldPuns+    NoImplicitPrelude+    RecordWildCards+    ScopedTypeVariables+    TupleSections+    TypeApplications+    TypeFamilies+    TypeOperators+  ghc-options:+    -Wall+    -Wincomplete-uni-patterns+    -Wincomplete-record-updates+    -fno-warn-tabs+    -- -fhide-source-paths+  build-depends:+      symantic-http >= 0.0+    , base >= 4.10 && < 5+    , base64-bytestring >= 1.0.0.1+    , bytestring >= 0.10+    , containers >= 0.5+    , http-api-data >= 0.4+    , http-media >= 0.7+    , http-types >= 0.12+    , lens-family-core >= 1.2+    , monad-classes >= 0.3.2+    , network-uri >= 2.6+    , pipes >= 4.3+    , pipes-bytestring >= 2.1+    , pipes-group >= 1.0+    , pipes-parse >= 3.0+    , pipes-safe >= 2.2+    , stm >= 2.4.5+    , text >= 1.2+    , time >= 1.8+    , transformers >= 0.5+    , word8 >= 0.1.3+  -- pkgconfig-depends: zlib+  -- extra-libraries: z