Data.Conduit.Shell.Process

Reading from the process.

Running scripts

run :: Segment r -> IO r

Run a segment.

Conduit types

text :: (r ~ (), m ~ IO) => ConduitT Text Text m r -> Segment r

Work on the stream as Text values from UTF-8.

bytes :: (a ~ ByteString, m ~ IO) => ConduitT a ByteString m r -> Segment r

Lift a conduit into a segment.

General conduits

conduit :: (a ~ ByteString, m ~ IO) => ConduitT a ByteString m r -> Segment r

Lift a conduit into a segment.

conduitEither :: (a ~ ByteString, m ~ IO) => ConduitT a (Either ByteString ByteString) m r -> Segment r

Lift a conduit into a segment, which can yield stderr.

Running processes

shell :: String -> Segment ()

Run a shell command.

proc :: String -> [String] -> Segment ()

Run a process command.

($|) :: Segment () -> Segment b -> Segment b infixl 0

Fuse two segments (either processes or conduits).

data Segment r

A pipeable segment. Either a conduit or a process.

Instances

Monad Segment

Methods

(>>=) :: Segment a -> (a -> Segment b) -> Segment b

(>>) :: Segment a -> Segment b -> Segment b

return :: a -> Segment a

fail :: String -> Segment a

Functor Segment

Methods

fmap :: (a -> b) -> Segment a -> Segment b

(<$) :: a -> Segment b -> Segment a

Applicative Segment

Methods

pure :: a -> Segment a

(<*>) :: Segment (a -> b) -> Segment a -> Segment b

liftA2 :: (a -> b -> c) -> Segment a -> Segment b -> Segment c

(*>) :: Segment a -> Segment b -> Segment b

(<*) :: Segment a -> Segment b -> Segment a

Alternative Segment

Methods

empty :: Segment a

(<|>) :: Segment a -> Segment a -> Segment a

some :: Segment a -> Segment [a]

many :: Segment a -> Segment [a]

MonadIO Segment

Methods

liftIO :: IO a -> Segment a

(~) * r () => ProcessType (Segment r)

Methods

spr :: String -> [Text] -> Segment r

data ProcessException

Process running exception.

Constructors

ProcessException CreateProcess ExitCode

ProcessEmpty

Instances

Show ProcessException

Methods

showsPrec :: Int -> ProcessException -> ShowS

show :: ProcessException -> String

showList :: [ProcessException] -> ShowS

Exception ProcessException

Methods

toException :: ProcessException -> SomeException

fromException :: SomeException -> Maybe ProcessException

displayException :: ProcessException -> String

class ToChunk a where

Used to allow outputting stdout or stderr.

Minimal complete definition

toChunk

Methods

toChunk :: a -> Either ByteString ByteString

Instances

ToChunk ByteString

Methods

toChunk :: ByteString -> Either ByteString ByteString

ToChunk (Either ByteString ByteString)

Methods

toChunk :: Either ByteString ByteString -> Either ByteString ByteString

tryS :: Exception e => Segment r -> Segment (Either e r)

Try something in a segment.