Class: Reline::IO

# File 'lib/reline/io.rb', line 6

def self.decide_io_gate
  if ENV['TERM'] == 'dumb'
    Reline::Dumb.new
  else
    require 'reline/io/ansi'

    case RbConfig::CONFIG['host_os']
    when /mswin|mingw|bccwin|wince|emc/
      require 'reline/io/windows'
      io = Reline::Windows.new
      if io.msys_tty? || !STDIN.tty?
        # In either case stdin is not a console (a Cygwin/MSYS pty pipe such
        # as mintty, or a redirect), so the Win32 console input API cannot
        # read it.
        Reline::ANSI.new
      else
        io
      end
    else
      # Ruby built with the msys/cygwin runtime also reaches here. Its tty layer
      # speaks ANSI in any terminal (mintty pty or Windows console), so the
      # Win32 console API must not be used. https://github.com/ruby/reline/issues/903
      Reline::ANSI.new
    end
  end
end

# File 'lib/reline/io.rb', line 33

def dumb?
  false
end

# File 'lib/reline/io.rb', line 46

def read_single_char(timeout_second)
  buffer = String.new(encoding: Encoding::ASCII_8BIT)
  loop do
    timeout = buffer.empty? ? Float::INFINITY : timeout_second
    c = getc(timeout)
    return unless c

    buffer << c
    encoded = buffer.dup.force_encoding(encoding)
    return encoded if encoded.valid_encoding?
  end
end