Reflex.Process

Documentation

createProcess :: (MonadIO m, TriggerEvent t m, PerformEvent t m, MonadIO (Performable m)) => CreateProcess -> ProcessConfig t ByteString -> m (Process t ByteString ByteString)

Run a shell process, feeding it input using an Event and exposing its output Events representing the process exit code, stdout and stderr.

The input Handle is not buffered and the output Handles are line-buffered.

NB: The std_in, std_out, and std_err parameters of the provided CreateProcess are replaced with new pipes and all output is redirected to those pipes.

createRedirectedProcess

Arguments

:: (MonadIO m, TriggerEvent t m, PerformEvent t m, MonadIO (Performable m))

=> (Handle -> IO (i -> IO ()))

Builder for the standard input handler

-> (Handle -> (o -> IO ()) -> IO (IO ()))

Builder for the standard output handler

-> (Handle -> (e -> IO ()) -> IO (IO ()))

Builder for the standard error handler

-> CreateProcess

-> ProcessConfig t i

-> m (Process t o e)

Runs a process and uses the given input and output handler functions to interact with the process via the standard streams. Used to implement createProcess.

NB: The std_in, std_out, and std_err parameters of the provided CreateProcess are replaced with new pipes and all output is redirected to those pipes.

data Process t o e

The output of a process

Constructors

Process

Fields

• _process_handle :: ProcessHandle
• _process_stdout :: Event t o

  Fires whenever there's some new stdout output. Depending on the buffering strategy of the implementation, this could be anything from whole lines to individual characters.

• _process_stderr :: Event t e

  Fires whenever there's some new stderr output. See note on _process_stdout.

• _process_exit :: Event t ExitCode
• _process_signal :: Event t Signal

  Fires when a signal has actually been sent to the process (via _processConfig_signal).

data ProcessConfig t i

The inputs to a process

Constructors

ProcessConfig

Fields

• _processConfig_stdin :: Event t i

  "stdin" input to be fed to the process

• _processConfig_signal :: Event t Signal

  Signals to send to the process

Instances

Reflex t => Default (ProcessConfig t i)

Defined in Reflex.Process

Methods

def :: ProcessConfig t i