Module: IRB::HistorySavingAbility

Includes:
Readline
Defined in:
lib/irb/ext/save-history.rb,
lib/irb/ext/save-history.rb

Overview

:nodoc:

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.extended(obj) ⇒ Object

def HistorySavingAbility.create_finalizer

proc do

if num = IRB.conf and (num = num.to_i) > 0 if hf = IRB.conf 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 || hist) end end

  end
end



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# File 'lib/irb/ext/save-history.rb', line 77

def HistorySavingAbility.extended(obj)
#      ObjectSpace.define_finalizer(obj, HistorySavingAbility.create_finalizer)
  IRB.conf[:AT_EXIT].push proc{obj.save_history}
  obj.load_history
  obj
end

Instance Method Details

#load_history ⇒ Object 



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# File 'lib/irb/ext/save-history.rb', line 84

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

#save_history ⇒ Object 



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# File 'lib/irb/ext/save-history.rb', line 96

def save_history
  if num = IRB.conf[:SAVE_HISTORY] and (num = num.to_i) > 0
	if history_file = IRB.conf[:HISTORY_FILE]
	  history_file = File.expand_path(history_file)
	end
	history_file = IRB.rc_file("_history") unless history_file

	# Change the permission of a file that already exists[BUG #7694]
	begin
	  if File.stat(history_file).mode & 066 != 0
 File.chmod(0600, history_file)
	  end
	rescue Errno::ENOENT
	rescue
	  raise
	end

	open(history_file, 'w', 0600 ) do |f|
	  hist = HISTORY.to_a
	  f.puts(hist[-num..-1] || hist)
	end
  end
end