Module: IRB::HistorySavingAbility

Includes:
Readline
Defined in:
lib/utils/irb.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.create_finalizer ⇒ Object 



464
465
466
467
468
469
470
471
472
473
474
475
476
477
 
# File 'lib/utils/irb.rb', line 464

def HistorySavingAbility.create_finalizer
  at_exit do
    if num = IRB.conf[:SAVE_HISTORY] and (num = num.to_i) > 0
      if hf = IRB.conf[:HISTORY_FILE]
        file = File.expand_path(hf)
      end
      file = IRB.rc_file("_history") unless file
      open(file, 'w' ) do |f|
        hist = HISTORY.to_a
        f.puts(hist[-num..-1] || hist)
      end
    end
  end
end

.extended(obj) ⇒ Object 



479
480
481
482
483
 
# File 'lib/utils/irb.rb', line 479

def HistorySavingAbility.extended(obj)
  HistorySavingAbility.create_finalizer
  obj.load_history
  obj
end

Instance Method Details

#load_history ⇒ Object 



485
486
487
488
489
490
491
492
493
 
# File 'lib/utils/irb.rb', line 485

def load_history
  hist = IRB.conf[:HISTORY_FILE]
  hist = IRB.rc_file("_history") unless hist
  if File.exist?(hist)
    open(hist) do |f|
      f.each {|l| HISTORY << l.chomp}
    end
  end
end