05-xcopy.rb

begin
  method = UI.ask_with_options(method_options, "l", "b", "s")
  source = UI.ask("Copy from: ")
  destination = UI.ask("Copy to: ")
  case method
  when "l"
    CopyCtrl.copy_by_line source, destination
  when "b"
    begin
      blocksize = UI.ask("Set blocksize (4096)", "Invalid blocksize.") do |input|
        input.empty? || input.to_i.to_s == input && input.to_i > 0
      end
    rescue EOFError
      blocksize = 4096
    end
    CopyCtrl.copy_by_block source, destination, blocksize.to_i
  when "s"
    CopyCtrl.copy_by_system source, destination
  end
rescue CopyCtrl::OverwriteError
  retry
rescue Errno::EACCES,Errno::ENOENT => e
  puts e.message
  retry
rescue Interrupt
  #Ctrl-C, Ctrl-D or Enter
  exit 0
end