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Feature #13604 » readline_alternative_interface_example.rb

How it can be used? - graywolf (Gray Wolf), 05/27/2017 10:00 AM

 
require_relative 'readline'

PROMPT = "rltest$ "

$running = true
$sigwinch_received = false

Readline.handler_install(PROMPT, add_hist: true) do |line|
# Can use ^D (stty eof) or `exit' to exit.
if !line || line == "exit"
puts unless line
puts "exit"
Readline.handler_remove
$running = false
else
puts "input line: #{line}"
end
end

Signal.trap('SIGWINCH') { $sigwinch_received = true }

while $running do
rs = IO.select([$stdin])
if $sigwinch_received
Readline.resize_terminal
$sigwinch_received = false
end
Readline.read_char if r = rs[0]
end

puts "rltest: Event loop has exited"
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