Patrick Linnane 9b33210241
Update io.rb
Co-authored-by: Bo Anderson <mail@boanderson.me>
2024-08-13 13:30:49 -06:00

26 lines
438 B
Ruby

# typed: strict
# frozen_string_literal: true
class IO
sig { params(sep: String).returns(String) }
def readline_nonblock(sep = $INPUT_RECORD_SEPARATOR)
line = +""
buffer = +""
begin
loop do
break if buffer == sep
read_nonblock(1, buffer)
line.concat(buffer)
end
line.freeze
rescue IO::WaitReadable, EOFError
raise if line.empty?
line.freeze
end
end
end