.irbrc

[Winston Tsang]

During last nights SEMI.rb meeting, we talk a bit about irb.  I offered up my .irbrc file.  So here it is.  Feel free to include your own.

Just a few words.  I usually put some output at the top of my configuration files (.profile, etc) that let's me know what's being loaded.

I've also broke down my .irbrc file into sections.  Each section has a url and date that tells where I found the entry and what date I added/updated it into my .irbrc file.

=====

puts ".irbc local"

# require 'extensions/all'
# require 'active_support'



###############################################################################
# http://ruby.tie-rack.org/3/my-irbrc/                               2007.07.09
###############################################################################
IRB_START_TIME = Time.now

ARGV.concat [ "–readline" ]

require 'pp'
require 'rubygems'
require 'duration'
require 'wirble'
require 'irb/completion'
require 'irb/ext/save-history'

IRB.conf[:PROMPT][:SHORT] = {
  :PROMPT_C=>"%03n:%i* ",
  :RETURN=>"%s\n",
  :PROMPT_I=>"%03n:%i> ",
  :PROMPT_N=>"%03n:%i> ",
  :PROMPT_S=>"%03n:%i%l "
}


# Wirble.init(
#   :skip_prompt => true,
#   :skip_history => true
# )

Wirble.init
Wirble.colorize

at_exit { puts Duration.new(Time.now - IRB_START_TIME) }

def clear
  print "\033[H\033[2J"
end



###############################################################################
# IRB configuration.
###############################################################################
IRB.conf[:EVAL_HISTORY] = 100
IRB.conf[:SAVE_HISTORY] = 1000
IRB.conf[:HISTORY_FILE] = File::expand_path("~/.irb_history")
IRB.conf[:AUTO_INDENT] = true
IRB.conf[:USE_READLINE] = true
# IRB.conf[:PROMPT_MODE] = :DEFAULT
IRB.conf[:PROMPT_MODE] = :SHORT

# ['irb/completion', 'rubygems', 'stringio'].each do |mod|
#   IRB.conf[:LOAD_MODULES] << mod unless IRB.conf[:LOAD_MODULES].include?(mod)
# end



###############################################################################
# http://project.ioni.st/post/963#post-963                           2006.11.09
# m(Time.new)        m(Time.new).size           m(Time.new).grep(/utc/)
###############################################################################
module Kernel
  def m(object)
    ObjectMethods.new(
      object.public_methods(false).sort
    )
  end

  class ObjectMethods < Array
    def inspect
      puts self
    end
  end
end



###############################################################################
# pm: Print Methods                                                  2006.11.15
# http://www.notsostupid.com/blog/2006/11/09/pm-print-methods/
#
# Example: pm "a"     pm "a", :more     pm "a", /down/      pm "a", /up/
###############################################################################
ANSI_RESET        = "\033[0m"
ANSI_BOLD         = "\033[1m"
ANSI_GRAY         = "\033[1;30m"
ANSI_LGRAY        = "\033[0;37m"
# ANSI_RESET        = ""
# ANSI_BOLD         = ""
# ANSI_GRAY         = ""
# ANSI_LGRAY        = ""

def pm(obj, *options) # Print methods
  methods = obj.methods - (options.include ?(:more) ? [] : Object.methods)
  filter = options.select {|opt| opt.kind_of? Regexp}.first
  methods = methods.select {|name| name =~ filter} if filter

  data = methods.sort.collect do |name|
    method = obj.method(name)
    args = "(" + case method.arity <=> 0
    when 1
      ("a"..(?a + method.arity - 1).chr).to_a.join(", ")
    when -1
      ("a"..(?a - method.arity - 1).chr).to_a.join(", ")
    else
      ""
    end + ")"
    klass = $1 if method.inspect =~ /Method: (.*?)#/
    klass = $1 if klass =~ /((.*?))/
    [name, args, klass]
  end
  max_name_length = data.collect {|item| item[0].size}.max
  max_args_length = data.collect {|item| item[1].size}.max
  data.each do |item|
    print " #{ANSI_BOLD}#{item[0].rjust(max_name_length)}#{ANSI_RESET}"
    print "#{ANSI_GRAY}#{item[1].ljust(max_args_length)}#{ANSI_RESET}"
    print "   #{ANSI_LGRAY}#{item[2]}#{ANSI_RESET}\n"
  end
  data.size
end