@hackage vty4.7.0.14

A simple terminal access library

vty is a terminal interface library.

Vty currently provides:

  • Automatic handling of window resizes.

  • Supports Unicode characters on output, automatically setting and resetting UTF-8 mode for xterm. Other terminals are assumed to support

  • Efficient output.

  • Minimizes repaint area, thus virtually eliminating the flicker problem that plagues ncurses programs.

  • A pure, compositional interface for efficiently constructing display images.

  • Automatically decodes keyboard keys into (key,[modifier]) tuples.

  • Automatically supports refresh on Ctrl-L.

  • Automatically supports timeout after 50ms for lone ESC (a barely noticable delay)

  • Interface is designed for relatively easy compatible extension.

  • Supports all ANSI SGR-modes (defined in console_codes(4)) with a type-safe interface.

  • Properly handles cleanup.

Current disadvantages:

  • The character encoding of the output terminal is assumed to be UTF-8.

  • Minimal support for special keys on terminals other than the linux-console. (F1-5 and arrow keys should work, but anything shifted isn't likely to.)

  • Uses the TIOCGWINSZ ioctl to find the current window size, which appears to be limited to Linux and *BSD.

Project is hosted on github.com: https://github.com/coreyoconnor/vty

git clone git://github.com/coreyoconnor/vty.git

To compile the demonstration program: ghc --make test/Test.hs gwinsz.c

The main documentation consists of the haddock-comments and the demonstration program