byline

Library for creating command-line interfaces (colors, menus, etc.) https://github.com/pjones/byline

Latest on Hackage:1.0.0.0

This package is not currently in any snapshots. If you're interested in using it, we recommend adding it to Stackage Nightly. Doing so will make builds more reliable, and allow stackage.org to host generated Haddocks.

BSD-2-Clause licensed and maintained by Peter Jones

Byline simplifies writing interactive command-line applications by building upon ansi-terminal and haskeline. This makes it possible to print messages and prompts that include terminal escape sequences (such as setting text colors) that are automatically disabled when standard input is a file. It also means that Byline works on both POSIX-compatible systems and on Windows.

The primary features of Byline include printing messages, prompting for input, and generating custom menus. It was inspired by the highline Ruby library and the terminal library by Craig Roche.

Example

example :: MonadByline m => m Text
example = do
  sayLn ("Hey, I like " <> ("Haskell" <> fg magenta) <> "!")

  let question =
        "What's "
          <> ("your" <> bold)
          <> " favorite "
          <> ("language" <> fg green <> underline)
          <> "? "

  askLn question (Just "Haskell")