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Module: IRB::HistorySavingAbility

Do not use. This module is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Instance Chain:
self, Readline
Defined in: lib/irb/ext/save-history.rb,
lib/irb/ext/save-history.rb

Class Method Summary

Instance Method Summary

Class Method Details

.extended(obj)

[ GitHub ] 

  


# File 'lib/irb/ext/save-history.rb', line 63



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


  







Instance Method Details



  

    #load_history  
  

  [ GitHub ]


  

  


# File 'lib/irb/ext/save-history.rb', line 69



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  
  

  [ GitHub ]


  

  


# File 'lib/irb/ext/save-history.rb', line 81



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