migrate_homebrew_taps.rb

#!/usr/bin/env ruby

require 'pathname'

DEVEL_PATH         = ENV['DEVEL_PATH']
HOMEBREW_ROOT      = `brew --prefix`.strip
SRC_ROOT           = File.join(DEVEL_PATH, 'src', 'github.com')
HOMEBREW_TAPS_ROOT = File.join(HOMEBREW_ROOT, 'Library', 'Taps')

class HomebrewTap
  attr_reader :path

  def initialize(path)
    @path = Pathname.new(path.to_s)
  end

  def owner
    @path.parent.basename.to_s
  end

  def name
    @path.basename.to_s
  end

  def inspect
    "<#{self.class}:#{self.owner}/#{self.name}>"
  end
end

taps = Pathname.glob("#{HOMEBREW_TAPS_ROOT}/*/*").select(&:directory?).map {|path| HomebrewTap.new(path) }
src_path = Pathname.new(SRC_ROOT)
taps.each do |tap|
  dest_parent = src_path.join(tap.owner)
  dest_path = dest_parent.join(tap.name)

  puts '-' * 25
  puts "---> #{tap}"
  if dest_path.exist?
    puts "---> Skip"
  else
    puts "mkdir -p #{dest_parent}"
    dest_parent.mkpath

    puts "mv #{tap.path} #{dest_path}"
    tap.path.rename(dest_path)

    puts "ln -s #{dest_path} #{tap.path}"
    tap.path.make_symlink(dest_path)
  end
end