Pimp Your IRB

.irbrc

# Make gems available
require 'rubygems'

begin
  require "ap"
  alias pp ap
rescue LoadError
  puts "Please install the 'awesome_print' gem."
end

# Print information about any HTTP requests being made
begin
  require "net-http-spy"
rescue LoadError
  puts "Please install the 'net-http-spy' gem."
end

# 'lp' to show method lookup path
begin
  require "looksee"
rescue LoadError
  puts "Please install the 'looksee' gem."
end

# Load the readline module.
IRB.conf[:USE_READLINE] = true

# Remove the annoying irb(main):001:0 and replace with >>
IRB.conf[:PROMPT_MODE]  = :SIMPLE

# Tab Completion
require 'irb/completion'

# Automatic Indentation
IRB.conf[:AUTO_INDENT]=true

# Save History between irb sessions
require 'irb/ext/save-history'
IRB.conf[:SAVE_HISTORY] = 100
IRB.conf[:HISTORY_FILE] = "#{ENV['HOME']}/.irb-save-history"

# taken from @jsmestad's gist - http://gist.github.com/406963
#require 'pp'

# Wirble is a set of enhancements for irb
# http://pablotron.org/software/wirble/README
# Implies require 'pp', 'irb/completion', and 'rubygems'
begin
  require "wirble"
  Wirble.init
  # Enable colored output
  Wirble.colorize
rescue LoadError
  puts "Please install the 'wirble' gem."
end

# Draw ASCII tables
# Must come after Wirble is required
begin
  require "hirb"
  require 'hirb/import_object'
  Hirb.enable
  extend Hirb::Console
rescue LoadError
  puts "Please install the 'hirb' gem."
end

# Clear the screen
def clear
  system 'clear'
  if ENV['RAILS_ENV']
    return "Rails environment: " + ENV['RAILS_ENV']
  else
    return "No rails environment - happy hacking!";
  end
end

# Load / reload files faster
# http://www.themomorohoax.com/2009/03/27/irb-tip-load-files-faster
def fl(file_name)
   file_name += '.rb' unless file_name =~ /\.rb/
   @@recent = file_name 
   load "#{file_name}"
end
 
def rl
  fl(@@recent)
end

# Reload the file and try the last command again
# http://www.themomorohoax.com/2009/04/07/ruby-irb-tip-try-again-faster
def rt
  rl
  eval(choose_last_command)
end

# prevent 'rt' itself from recursing. 
def choose_last_command
  real_last = Readline::HISTORY.to_a[-2]
  real_last == 'rt' ? @@saved_last :  (@@saved_last = real_last)
end

# Method to pretty-print object methods
# Coded by sebastian delmont
# http://snippets.dzone.com/posts/show/2916
class Object
  ANSI_BOLD       = "\033[1m"
  ANSI_RESET      = "\033[0m"
  ANSI_LGRAY    = "\033[0;37m"
  ANSI_GRAY     = "\033[1;30m"

  # Print object's methods
  def pm(*options)
    methods = self.methods
    methods -= Object.methods unless options.include? :more
    filter = options.select {|opt| opt.kind_of? Regexp}.first
    methods = methods.select {|name| name =~ filter} if filter

    data = methods.sort.collect do |name|
      method = self.method(name)
      if method.arity == 0
        args = "()"
      elsif method.arity > 0
        n = method.arity
        args = "(#{(1..n).collect {|i| "arg#{i}"}.join(", ")})"
      elsif method.arity < 0
        n = -method.arity
        args = "(#{(1..n).collect {|i| "arg#{i}"}.join(", ")}, ...)"
      end
      klass = $1 if method.inspect =~ /Method: (.*?)#/
      [name, args, klass]
    end
    max_name = data.collect {|item| item[0].size}.max
    max_args = data.collect {|item| item[1].size}.max
    data.each do |item| 
      print " #{ANSI_BOLD}#{item[0].to_s.rjust(max_name)}#{ANSI_RESET}"
      print "#{ANSI_GRAY}#{item[1].ljust(max_args)}#{ANSI_RESET}"
      print "   #{ANSI_LGRAY}#{item[2]}#{ANSI_RESET}\n"
    end
    data.size
  end
end

# http://sketches.rubyforge.org/
begin
  require "sketches"
  Sketches.config :editor => ENV['EDITOR']
rescue LoadError
  puts "Please install the 'sketches' gem."
end

# Easily print methods local to an object's class
class Object
  def local_methods
    (methods - Object.instance_methods).sort
  end
end

# Log to STDOUT if in Rails
if ENV.include?('RAILS_ENV') && !Object.const_defined?('RAILS_DEFAULT_LOGGER')
  require 'logger'
  RAILS_DEFAULT_LOGGER = Logger.new(STDOUT)
end