FAQ? raw i/o in Ruby

ruby-talk
1

Hello, just looking for a way to do character-at-a-time input in Ruby.
Is there an interface to termios, or a higher-level module that abstracts
such system-dependent details?

-Mark

2

Well, I don’t know how useful this is, but here’s an extension
that wraps the POSIX termios structure. With it, you can enable
cbreak mode (character-at-a-time input) in a way that mirrors
C usage:

    require 'termios'
    t = $stdin.getattr
    t.lflag &= ~Termios::ICANON
    $stdin.setattr(0, t)

After which, $stdin.getc will return the next key pressed without waiting
for a newline, at least on a UNIX system.

-Mark

termios.c (12.1 KB)

extconf.rb (42 Bytes)