source: subversion/sites/rails_port/config/boot.rb @ 15668

Last change on this file since 15668 was 15588, checked in by tomhughes, 10 years ago

Move to version 2.3.2 of rails.

File size: 2.7 KB
Line 
1# Don't change this file!
2# Configure your app in config/environment.rb and config/environments/*.rb
3
4RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT)
5
6module Rails
7  class << self
8    def boot!
9      unless booted?
10        preinitialize
11        pick_boot.run
12      end
13    end
14
15    def booted?
16      defined? Rails::Initializer
17    end
18
19    def pick_boot
20      (vendor_rails? ? VendorBoot : GemBoot).new
21    end
22
23    def vendor_rails?
24      File.exist?("#{RAILS_ROOT}/vendor/rails")
25    end
26
27    def preinitialize
28      load(preinitializer_path) if File.exist?(preinitializer_path)
29    end
30
31    def preinitializer_path
32      "#{RAILS_ROOT}/config/preinitializer.rb"
33    end
34  end
35
36  class Boot
37    def run
38      load_initializer
39      Rails::Initializer.run(:set_load_path)
40    end
41  end
42
43  class VendorBoot < Boot
44    def load_initializer
45      require "#{RAILS_ROOT}/vendor/rails/railties/lib/initializer"
46      Rails::Initializer.run(:install_gem_spec_stubs)
47      Rails::GemDependency.add_frozen_gem_path
48    end
49  end
50
51  class GemBoot < Boot
52    def load_initializer
53      self.class.load_rubygems
54      load_rails_gem
55      require 'initializer'
56    end
57
58    def load_rails_gem
59      if version = self.class.gem_version
60        gem 'rails', version
61      else
62        gem 'rails'
63      end
64    rescue Gem::LoadError => load_error
65      $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.)
66      exit 1
67    end
68
69    class << self
70      def rubygems_version
71        Gem::RubyGemsVersion rescue nil
72      end
73
74      def gem_version
75        if defined? RAILS_GEM_VERSION
76          RAILS_GEM_VERSION
77        elsif ENV.include?('RAILS_GEM_VERSION')
78          ENV['RAILS_GEM_VERSION']
79        else
80          parse_gem_version(read_environment_rb)
81        end
82      end
83
84      def load_rubygems
85        require 'rubygems'
86        min_version = '1.3.1'
87        unless rubygems_version >= min_version
88          $stderr.puts %Q(Rails requires RubyGems >= #{min_version} (you have #{rubygems_version}). Please `gem update --system` and try again.)
89          exit 1
90        end
91
92      rescue LoadError
93        $stderr.puts %Q(Rails requires RubyGems >= #{min_version}. Please install RubyGems and try again: http://rubygems.rubyforge.org)
94        exit 1
95      end
96
97      def parse_gem_version(text)
98        $1 if text =~ /^[^#]*RAILS_GEM_VERSION\s*=\s*["']([!~<>=]*\s*[\d.]+)["']/
99      end
100
101      private
102        def read_environment_rb
103          File.read("#{RAILS_ROOT}/config/environment.rb")
104        end
105    end
106  end
107end
108
109# All that for this:
110Rails.boot!
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