Chris@909: # Don't change this file!
Chris@909: # Configure your app in config/environment.rb and config/environments/*.rb
Chris@909: 
Chris@909: if RUBY_VERSION >= '1.9'
Chris@909:   require 'yaml'
Chris@909:   YAML::ENGINE.yamler = 'syck'
Chris@909: end
Chris@909: 
Chris@909: RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT)
Chris@909: 
Chris@909: module Rails
Chris@909:   class << self
Chris@909:     def boot!
Chris@909:       unless booted?
Chris@909:         preinitialize
Chris@909:         pick_boot.run
Chris@909:       end
Chris@909:     end
Chris@909: 
Chris@909:     def booted?
Chris@909:       defined? Rails::Initializer
Chris@909:     end
Chris@909: 
Chris@909:     def pick_boot
Chris@909:       (vendor_rails? ? VendorBoot : GemBoot).new
Chris@909:     end
Chris@909: 
Chris@909:     def vendor_rails?
Chris@909:       File.exist?("#{RAILS_ROOT}/vendor/rails")
Chris@909:     end
Chris@909: 
Chris@909:     def preinitialize
Chris@909:       load(preinitializer_path) if File.exist?(preinitializer_path)
Chris@909:     end
Chris@909: 
Chris@909:     def preinitializer_path
Chris@909:       "#{RAILS_ROOT}/config/preinitializer.rb"
Chris@909:     end
Chris@909:   end
Chris@909: 
Chris@909:   class Boot
Chris@909:     def run
Chris@909:       load_initializer
Chris@909:       Rails::Initializer.run(:set_load_path)
Chris@909:     end
Chris@909:   end
Chris@909: 
Chris@909:   class VendorBoot < Boot
Chris@909:     def load_initializer
Chris@909:       require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
Chris@909:       Rails::Initializer.run(:install_gem_spec_stubs)
Chris@909:       Rails::GemDependency.add_frozen_gem_path
Chris@909:     end
Chris@909:   end
Chris@909: 
Chris@909:   class GemBoot < Boot
Chris@909:     def load_initializer
Chris@909:       self.class.load_rubygems
Chris@909:       load_rails_gem
Chris@909:       require 'initializer'
Chris@909:     end
Chris@909: 
Chris@909:     def load_rails_gem
Chris@909:       if version = self.class.gem_version
Chris@909:         gem 'rails', version
Chris@909:       else
Chris@909:         gem 'rails'
Chris@909:       end
Chris@909:     rescue Gem::LoadError => load_error
Chris@909:       if load_error.message =~ /Could not find RubyGem rails/
Chris@909:         STDERR.puts %(Missing the Rails #{version} gem. Please `gem install -v=#{version} rails`, update your RAILS_GEM_VERSION setting in config/environment.rb for the Rails version you do have installed, or comment out RAILS_GEM_VERSION to use the latest version installed.)
Chris@909:         exit 1
Chris@909:       else
Chris@909:         raise
Chris@909:       end
Chris@909:     end
Chris@909: 
Chris@909:     class << self
Chris@909:       def rubygems_version
Chris@909:         Gem::RubyGemsVersion rescue nil
Chris@909:       end
Chris@909: 
Chris@909:       def gem_version
Chris@909:         if defined? RAILS_GEM_VERSION
Chris@909:           RAILS_GEM_VERSION
Chris@909:         elsif ENV.include?('RAILS_GEM_VERSION')
Chris@909:           ENV['RAILS_GEM_VERSION']
Chris@909:         else
Chris@909:           parse_gem_version(read_environment_rb)
Chris@909:         end
Chris@909:       end
Chris@909: 
Chris@909:       def load_rubygems
Chris@909:         min_version = '1.3.2'
Chris@909:         require 'rubygems'
Chris@909:         unless rubygems_version >= min_version
Chris@909:           $stderr.puts %Q(Rails requires RubyGems >= #{min_version} (you have #{rubygems_version}). Please `gem update --system` and try again.)
Chris@909:           exit 1
Chris@909:         end
Chris@909: 
Chris@909:       rescue LoadError
Chris@909:         $stderr.puts %Q(Rails requires RubyGems >= #{min_version}. Please install RubyGems and try again: http://rubygems.rubyforge.org)
Chris@909:         exit 1
Chris@909:       end
Chris@909: 
Chris@909:       def parse_gem_version(text)
Chris@909:         $1 if text =~ /^[^#]*RAILS_GEM_VERSION\s*=\s*["']([!~<>=]*\s*[\d.]+)["']/
Chris@909:       end
Chris@909: 
Chris@909:       private
Chris@909:         def read_environment_rb
Chris@909:           File.read("#{RAILS_ROOT}/config/environment.rb")
Chris@909:         end
Chris@909:     end
Chris@909:   end
Chris@909: end
Chris@909: 
Chris@909: # All that for this:
Chris@909: Rails.boot!