pwd = File.dirname(__FILE__) $:.unshift pwd # This is a predicate useful for the doc:guides task of applications. def bundler? # Note that rake sets the cwd to the one that contains the Rakefile # being executed. File.exist?('Gemfile') end begin # Guides generation in the Rails repo. as_lib = File.join(pwd, "../activesupport/lib") ap_lib = File.join(pwd, "../actionpack/lib") $:.unshift as_lib if File.directory?(as_lib) $:.unshift ap_lib if File.directory?(ap_lib) rescue LoadError # Guides generation from gems. gem "actionpack", '>= 3.0' end begin require 'redcarpet' rescue LoadError # This can happen if doc:guides is executed in an application. $stderr.puts('Generating guides requires Redcarpet 3.1.2+.') $stderr.puts(< 3.1.2' to the Gemfile, run bundle install and try again. ERROR exit 1 end begin require 'nokogiri' rescue LoadError # This can happen if doc:guides is executed in an application. $stderr.puts('Generating guides requires Nokogiri.') $stderr.puts(<