post-checkout hook to prevent from checking out master

post-checkout

#! /usr/bin/env ruby

class String
  # colorization
  def colorize(color_code)
    "\e[#{color_code}m#{self}\e[0m"
  end

  def red
    colorize(31)
  end
end

current_branch = `git branch | grep '*' | awk '{ print \$2 }'`.chomp

if current_branch == 'master'
  `git checkout develop`

  puts "You are trying to checkout `master`, but our default branch is `develop`. Now this post-commit checked out `develop` to not break `master`.".red
  puts "If you really want to checkout `master`, please modify this file(#{File.expand_path(__FILE__)}).".red
end