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-rw-r--r--railties/lib/rails/generators/rails/app/app_generator.rb62
1 files changed, 62 insertions, 0 deletions
diff --git a/railties/lib/rails/generators/rails/app/app_generator.rb b/railties/lib/rails/generators/rails/app/app_generator.rb
index d48dcf9ef3..9fb8ea6955 100644
--- a/railties/lib/rails/generators/rails/app/app_generator.rb
+++ b/railties/lib/rails/generators/rails/app/app_generator.rb
@@ -300,5 +300,67 @@ module Rails
defined?(::AppBuilder) ? ::AppBuilder : Rails::AppBuilder
end
end
+
+ # This class handles preparation of the arguments before the AppGenerator is
+ # called. The class provides version or help information if they were
+ # requested, and also constructs the railsrc file (used for extra configuration
+ # options).
+ #
+ # This class should be called before the AppGenerator is required and started
+ # since it configures and mutates ARGV correctly.
+ class AppPreparer # :nodoc
+ attr_reader :argv
+
+ def initialize(argv = ARGV)
+ @argv = argv
+ end
+
+ def prepare!
+ handle_version_request!(argv.first)
+ unless handle_invalid_command!(argv.first)
+ argv.shift
+ handle_rails_rc!
+ end
+ end
+
+ private
+
+ def handle_version_request!(argument)
+ if ['--version', '-v'].include?(argv.first)
+ require 'rails/version'
+ puts "Rails #{Rails::VERSION::STRING}"
+ exit(0)
+ end
+ end
+
+ def handle_invalid_command!(argument)
+ if argument != "new"
+ argv[0] = "--help"
+ end
+ end
+
+ def handle_rails_rc!
+ unless argv.delete("--no-rc")
+ insert_railsrc(railsrc)
+ end
+ end
+
+ def railsrc
+ if (customrc = argv.index{ |x| x.include?("--rc=") })
+ File.expand_path(argv.delete_at(customrc).gsub(/--rc=/, ""))
+ else
+ File.join(File.expand_path("~"), '.railsrc')
+ end
+ end
+
+ def insert_railsrc(railsrc)
+ if File.exist?(railsrc)
+ extra_args_string = File.read(railsrc)
+ extra_args = extra_args_string.split(/\n+/).map {|l| l.split}.flatten
+ puts "Using #{extra_args.join(" ")} from #{railsrc}"
+ argv.insert(1, *extra_args)
+ end
+ end
+ end
end
end