System.Console.Wizard.Haskeline

Documentation

data Haskeline m r

A Haskeline backend for wizards, supporting input, output, default text, and password input. In addition, Haskeline settings can be modified for a single wizard, and arbitrary IO can be performed using the MonadIO instance.

Instances

MonadIO (Wizard Haskeline)

data UnexpectedEOF

The Haskeline back-end will throw this exception if EOF is encountered when it is not expected. Specifically, when actions such as getInputLine return Nothing.

Constructors

UnexpectedEOF

Instances

Show UnexpectedEOF

Typeable UnexpectedEOF

Exception UnexpectedEOF

runHaskeline :: Wizard Haskeline a -> InputT IO (Maybe a)

Runs a Wizard action in the Haskeline backend.

withSettings :: Settings IO -> Wizard Haskeline a -> Wizard Haskeline a

Modifies a wizard so that it will run with different Haskeline Settings to the top level input monad.