openproject/config/boot.rb

# Don't change this file!
# Configure your app in config/environment.rb and config/environments/*.rb

RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT)

module Rails
  class << self
    def boot!
      unless booted?
        preinitialize
        pick_boot.run
      end
    end

    def booted?
      defined? Rails::Initializer
    end

    def pick_boot
      (vendor_rails? ? VendorBoot : GemBoot).new
    end

    def vendor_rails?
      File.exist?("#{RAILS_ROOT}/vendor/rails")
    end

    def preinitialize
      load(preinitializer_path) if File.exist?(preinitializer_path)
    end

    def preinitializer_path
      "#{RAILS_ROOT}/config/preinitializer.rb"
    end
  end

  class Boot
    def run
      load_initializer
      Rails::Initializer.run(:set_load_path)
    end
  end

  class VendorBoot < Boot
    def load_initializer
      require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
      Rails::Initializer.run(:install_gem_spec_stubs)
      Rails::GemDependency.add_frozen_gem_path
    end
  end

  class GemBoot < Boot
    def load_initializer
      self.class.load_rubygems
      load_rails_gem
      require 'initializer'
    end

    def load_rails_gem
      if version = self.class.gem_version
        gem 'rails', version
      else
        gem 'rails'
      end
    rescue Gem::LoadError => load_error
      $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.)
      exit 1
    end

    class << self
      def rubygems_version
        Gem::RubyGemsVersion rescue nil
      end

      def gem_version
        if defined? RAILS_GEM_VERSION
          RAILS_GEM_VERSION
        elsif ENV.include?('RAILS_GEM_VERSION')
          ENV['RAILS_GEM_VERSION']
        else
          parse_gem_version(read_environment_rb)
        end
      end

      def load_rubygems
        min_version = '1.3.2'
        require 'rubygems'
        unless rubygems_version >= min_version
          $stderr.puts %Q(Rails requires RubyGems >= #{min_version} (you have #{rubygems_version}). Please `gem update --system` and try again.)
          exit 1
        end

      rescue LoadError
        $stderr.puts %Q(Rails requires RubyGems >= #{min_version}. Please install RubyGems and try again: http://rubygems.rubyforge.org)
        exit 1
      end

      def parse_gem_version(text)
        $1 if text =~ /^[^#]*RAILS_GEM_VERSION\s*=\s*["']([!~<>=]*\s*[\d.]+)["']/
      end

      private
        def read_environment_rb
          File.read("#{RAILS_ROOT}/config/environment.rb")
        end
    end
  end
end

# TODO: Workaround for #7013 to be removed for 1.2.0
# Loads i18n 0.4.2 before Rails loads any more recent gem
# 0.5.0 is not compatible with the old interpolation syntax
# Plugins will have to migrate to the new syntax for 1.2.0
require 'rubygems'
begin
  gem 'i18n', '0.4.2'
rescue Gem::LoadError => load_error
  $stderr.puts %(Missing the i18n 0.4.2 gem. Please `gem install -v=0.4.2 i18n`)
  exit 1
end

# TODO: Workaround for rubygems > 1.5 compatibility (#133), to be removed
# for Rails > 2.3.5
#
# Fixes the deprecation warning about removal of version_requirements for
# rubygems < 1.5 and provide a workaround for rubygems >= 1.5 where that
# method was finally removed.
module Rails
  # See lib/gems/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb
  class GemDependency < Gem::Dependency
    def dependencies
      return [] if framework_gem?
      return [] unless installed?
      specification.dependencies.reject do |dependency|
        dependency.type == :development
      end.map do |dependency|
        GemDependency.new(dependency.name,
                          :requirement => (dependency.respond_to?(:requirement) ?
                           dependency.requirement :
                           dependency.version_requirements))
      end
    end

    if method_defined?(:requirement)
      # rubygem > 1.5
      def requirement
        req = super
        req unless req == Gem::Requirement.default
      end
      # bypass passenger error
      alias :version_requirements :requirement
    else
      # rubygem < 1.5
      def requirement
        req = version_requirements
        req unless req == Gem::Requirement.default
      end
    end
  end
end

# All that for this:
Rails.boot!