Module: IRB::History

Defined in:
lib/irb/history/base.rb,
lib/irb/history/client.rb,
lib/irb/history/server.rb

Defined Under Namespace

Classes: Server

Constant Summary collapse

DEFAULT_HOST = 
'127.0.0.1'
DEFAULT_PORT = 
26501
DEFAULT_URI = 
"druby://#{DEFAULT_HOST}:#{DEFAULT_PORT}"
DEFAULT_FILE = 
'~/.irb_history'

Class Method Summary collapse

Class Method Details

.start_client(uri = DEFAULT_URI, lines_to_recall = 100) ⇒ Object

Reconfigures a running IRB session to use the given remote history service specified by uri, initially retrieving lines_to_recall lines of history.

Note: This method overrides gets in IRB::ReadlineInputMethod; it can’t be “stopped,” and you shouldn’t call it more than once.



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# File 'lib/irb/history/client.rb', line 12

def self.start_client(uri = DEFAULT_URI, lines_to_recall = 100)
  require 'drb'
  
  DRb.start_service
  history = DRbObject.new nil, uri
  
  IRB::ReadlineInputMethod.instance_eval do
    alias_method :old_gets, :gets

    define_method :gets do
      returning old_gets do
        line = Readline::HISTORY[-1]
        history.remember line unless @eof rescue nil
      end
    end
  end

  Readline::HISTORY.push *history.recall(lines_to_recall)

  at_exit {history.unsubscribe_from Readline::HISTORY} if
    history.subscribe_to Readline::HISTORY
rescue   
end

.start_server(uri = DEFAULT_URI, store_path = DEFAULT_FILE) ⇒ Object

Starts a Server on the given uri and using the YAML history file specified by store_path. The Server object is instantiated, a DRb service is started on it, and the Server object is returned. The DRb service object is accessible via Server#service.



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# File 'lib/irb/history/server.rb', line 84

def self.start_server(uri = DEFAULT_URI, store_path = DEFAULT_FILE)
  returning server = Server.new(store_path) do
    server.service = DRb.start_service uri, server
  end
end