Simple commandline text prompt functions.

The library provides prompt functions for reading user input: for example prompt returns the input given, promptEnter expects only Enter, and yesNo asks for confirmation.

simple-prompt

A simple commandline text prompt library for user input.

The SimplePrompt module provides:

• prompt: returns a string
• promptNonEmpty prompts for non-empty string
• promptInitial with pre-filled initial input
• promptPassword prompts for password
• promptChar prompts for a character
• promptKeyPress waits for a key press
• promptEnter waits for Enter key
• yesNo expects y/n answer
• yesNoDefault [y/N] or [Y/n]

It uses haskeline to read the input.

The SimplePrompt.Internal module provides lower-level access to functional haskeline InputT monad transformer-based prompt functions:

• runPrompt, getPrompt*
• untilInput, mapInput, clearedInput, nonEmptyInput.

Usage examples

Since it basically runs in the IO monad usage is pretty simple.

For explicit examples search for import SimplePrompt in consumer packages: dl-fedora, fbrnch, hkgr, rhbzquery, select-rpms, stack-clean-old.