.irbrc

#!/usr/bin/env ruby

# IRB config file.
require 'rubygems'

# Persist history in my personal repo.
IRB.conf[:SAVEHISTORY] = 1024
IRB.conf[:HISTORYFILE] = File.expand_path(File.expand_path('~/file-bouncer/.irb_history'))
IRB.conf[:EVAL_HISTORY] = 512

# Easy history lookup
def history_array
  Readline::HISTORY.to_a
end

def history
  print history_array.join("\n")
end

# Credits: https://gist.github.com/jimweirich/4950443
def edit(file, line)
  `emacsclient -n +#{line} #{file}`
end

def src(object, method)
  if object.respond_to?(method)
    meth = object.method(method)
  elsif object.is_a?(Class)
    meth = object.instance_method(method)
  end
  location = meth.source_location
  edit(*location) if location
  location
rescue NameError => ex
  nil
end

# Credits: https://github.com/r00k/dotfiles/blob/master/irbrc
#          https://www.rakeroutes.com/blog/customize-your-irb/
class Object
  # list methods which aren't in superclass
  def local_methods(obj = self)
    (obj.methods - obj.class.superclass.instance_methods).sort
  end

  def interesting_methods
    case self.class
    when Class
      public_methods.sort - Object.public_methods
    when Module
      public_methods.sort - Module.public_methods
    else
      public_methods.sort - Object.new.public_methods
    end
  end
end

# Display source code quickly in IRB.
def srd(method)
   method.source.display
end