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[rails.git] / config / boot.rb

diff --git a/config/boot.rb b/config/boot.rb
index b7af0c35c7e78314768de378587c84519ca55024..0a516880cadc333d0efc41367a56a09dd0654e87 100644 (file)
--- a/config/boot.rb
+++ b/config/boot.rb
@@ -1,45 +1,109 @@
-# Don't change this file. Configuration is done in config/environment.rb and config/environments/*.rb
+# Don't change this file!
+# Configure your app in config/environment.rb and config/environments/*.rb

 
 

-unless defined?(RAILS_ROOT)
-  root_path = File.join(File.dirname(__FILE__), '..')
+RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT)

 
 

-  unless RUBY_PLATFORM =~ /(:?mswin|mingw)/
-    require 'pathname'
-    root_path = Pathname.new(root_path).cleanpath(true).to_s
-  end
+module Rails
+  class << self
+    def boot!
+      unless booted?
+        preinitialize
+        pick_boot.run
+      end
+    end

 
 

-  RAILS_ROOT = root_path
-end
+    def booted?
+      defined? Rails::Initializer
+    end

 
 

-unless defined?(Rails::Initializer)
-  if File.directory?("#{RAILS_ROOT}/vendor/rails")
-    require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
-  else
-    require 'rubygems'
+    def pick_boot
+      (vendor_rails? ? VendorBoot : GemBoot).new
+    end
+
+    def vendor_rails?
+      File.exist?("#{RAILS_ROOT}/vendor/rails")
+    end

 
 

-    environment_without_comments = IO.readlines(File.dirname(__FILE__) + '/environment.rb').reject { |l| l =~ /^#/ }.join
-    environment_without_comments =~ /[^#]RAILS_GEM_VERSION = '([\d.]+)'/
-    rails_gem_version = $1
+    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)
+    end
+  end

 
 

-    if version = defined?(RAILS_GEM_VERSION) ? RAILS_GEM_VERSION : rails_gem_version
-      # Asking for 1.1.6 will give you 1.1.6.5206, if available -- makes it easier to use beta gems
-      rails_gem = Gem.cache.search('rails', "~>#{version}.0").sort_by { |g| g.version.version }.last
+  class GemBoot < Boot
+    def load_initializer
+      self.class.load_rubygems
+      load_rails_gem
+      require 'initializer'
+    end

 
 

-      if rails_gem
-        gem "rails", "=#{rails_gem.version.version}"
-        require rails_gem.full_gem_path + '/lib/initializer'
+    def load_rails_gem
+      if version = self.class.gem_version
+        gem 'rails', version

       else
       else

-        STDERR.puts %(Cannot find gem for Rails ~>#{version}.0:
-    Install the missing gem with 'gem install -v=#{version} rails', or
-    change environment.rb to define RAILS_GEM_VERSION with your desired version.
-  )
+        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
+        require 'rubygems'
+        min_version = '1.3.1'
+        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
         exit 1
       end

-    else
-      gem "rails"
-      require 'initializer'
+
+      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
   end

-
-  Rails::Initializer.run(:set_load_path)

 end
 end

+
+# All that for this:
+Rails.boot!