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module Sprockets
autoload :Helpers, "sprockets/helpers"
autoload :LazyCompressor, "sprockets/compressors"
autoload :NullCompressor, "sprockets/compressors"
# TODO: Get rid of config.assets.enabled
class Railtie < ::Rails::Railtie
config.default_asset_host_protocol = :relative
rake_tasks do
load "sprockets/assets.rake"
end
# Configure ActionController to use sprockets.
initializer "sprockets.set_configs", :after => "action_controller.set_configs" do |app|
ActiveSupport.on_load(:action_controller) do
self.use_sprockets = app.config.assets.enabled
end
end
# We need to configure this after initialization to ensure we collect
# paths from all engines. This hook is invoked exactly before routes
# are compiled, and so that other Railties have an opportunity to
# register compressors.
config.after_initialize do |app|
assets = app.config.assets
next unless assets.enabled
app.assets = asset_environment(app)
ActiveSupport.on_load(:action_view) do
include ::Sprockets::Helpers::RailsHelper
app.assets.context_class.instance_eval do
include ::Sprockets::Helpers::RailsHelper
end
end
app.routes.prepend do
mount app.assets => assets.prefix
end
if config.action_controller.perform_caching
app.assets = app.assets.index
end
end
protected
def asset_environment(app)
require "sprockets"
assets = app.config.assets
env = Sprockets::Environment.new(app.root.to_s)
env.static_root = File.join(app.root.join("public"), assets.prefix)
if env.respond_to?(:append_path)
assets.paths.each { |path| env.append_path(path) }
else
env.paths.concat assets.paths
end
env.logger = ::Rails.logger
if env.respond_to?(:cache) && assets.cache_store != false
env.cache = ActiveSupport::Cache.lookup_store(assets.cache_store) || ::Rails.cache
end
if assets.compress
# temporarily hardcode default JS compressor to uglify. Soon, it will work
# the same as SCSS, where a default plugin sets the default.
unless assets.js_compressor == false
env.js_compressor = LazyCompressor.new { expand_js_compressor(assets.js_compressor || :uglifier) }
end
unless assets.css_compressor == false
env.css_compressor = LazyCompressor.new { expand_css_compressor(assets.css_compressor) }
end
end
env
end
def expand_js_compressor(sym)
case sym
when :closure
require 'closure-compiler'
Closure::Compiler.new
when :uglifier
require 'uglifier'
Uglifier.new
when :yui
require 'yui/compressor'
YUI::JavaScriptCompressor.new
else
sym
end
end
def expand_css_compressor(sym)
case sym
when :yui
require 'yui/compressor'
YUI::CssCompressor.new
else
sym
end
end
end
end
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