163 lines
5.8 KiB
Ruby
163 lines
5.8 KiB
Ruby
module Middleman
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module CoreExtensions
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# The Extensions core module provides basic configurability to Middleman projects:
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#
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# * It loads and evaluates `config.rb`.
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# * It defines lifecycle hooks for extensions and `config.rb` to use.
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# * It provides the {#activate} method for use in `config.rb`.
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module Extensions
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def self.included(app)
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app.define_hook :initialized
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app.define_hook :instance_available
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app.define_hook :after_configuration
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app.define_hook :before_configuration
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app.config.define_setting :autoload_sprockets, true, 'Automatically load sprockets at startup?'
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app.config[:autoload_sprockets] = (ENV['AUTOLOAD_SPROCKETS'] == 'true') if ENV['AUTOLOAD_SPROCKETS']
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app.extend ClassMethods
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app.delegate :configure, to: :"self.class"
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end
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module ClassMethods
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# Register a block to run only in a specific environment.
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#
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# @example
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# # Only minify when building
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# configure :production do
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# activate :minify_javascript
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# end
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#
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# @param [String, Symbol] env The environment to run in
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# @return [void]
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def configure(env, &block)
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send("#{env}_config", &block)
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end
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end
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# Activate an extension, optionally passing in options.
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# This method is typically used from a project's `config.rb`.
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#
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# @example Activate an extension with no options
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# activate :lorem
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#
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# @example Activate an extension, with options
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# activate :minify_javascript, inline: true
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#
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# @example Use a block to configure extension options
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# activate :minify_javascript do |opts|
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# opts.ignore += ['*-test.js']
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# end
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#
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# @param [Symbol] ext_name The name of thed extension to activate
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# @param [Hash] options Options to pass to the extension
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# @yield [Middleman::Configuration::ConfigurationManager] Extension options that can be modified before the extension is initialized.
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# @return [void]
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def activate(ext_name, options={}, &block)
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extension = ::Middleman::Extensions.load(ext_name)
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logger.debug "== Activating: #{ext_name}"
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if extension.supports_multiple_instances?
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extensions[ext_name] ||= {}
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key = "instance_#{extensions[ext_name].keys.length}"
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extensions[ext_name][key] = extension.new(self.class, options, &block)
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elsif extensions.key?(ext_name)
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raise "#{ext_name} has already been activated and cannot be re-activated."
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else
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extensions[ext_name] = extension.new(self.class, options, &block)
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end
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end
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# A hash of all activated extensions, indexed by their name. If an extension supports multiple
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# instances, it will be stored as a hash of instances instead of just the instance.
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#
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# @return [Hash{Symbol => Middleman::Extension, Hash{String => Middleman::Extension}}]
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def extensions
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@extensions ||= {}
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end
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# Override application initialization to load `config.rb` and to call lifecycle hooks.
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def initialize(&block)
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self.class.inst = self
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# Search the root of the project for required files
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$LOAD_PATH.unshift(root) unless $LOAD_PATH.include?(root)
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# Evaluate a passed block if given
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config_context.instance_exec(&block) if block_given?
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super
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::Middleman::Extension.clear_after_extension_callbacks
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::Middleman::Extensions.auto_activate(:before_configuration, self)
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if config[:autoload_sprockets]
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begin
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require 'middleman-sprockets'
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activate :sprockets
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rescue LoadError
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# It's OK if somebody is using middleman-core without middleman-sprockets
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end
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end
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run_hook :initialized
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run_hook :before_configuration
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# Check for and evaluate local configuration in `config.rb`
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local_config = File.join(root, 'config.rb')
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if File.exist? local_config
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logger.debug '== Reading: Local config'
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config_context.instance_eval File.read(local_config), local_config, 1
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end
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env_config = File.join(root, 'environments', "#{config[:environment]}.rb")
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if File.exist? env_config
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logger.debug "== Reading: #{config[:environment]} config"
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config_context.instance_eval File.read(env_config), env_config, 1
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end
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config_context.execute_configure_callbacks(config[:environment])
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run_hook :instance_available
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# This is for making the tests work - since the tests
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# don't completely reload middleman, I18n.load_path can get
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# polluted with paths from other test app directories that don't
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# exist anymore.
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if ENV['TEST']
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::I18n.load_path.delete_if { |path| path =~ %r{tmp/aruba} }
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::I18n.reload!
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end
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run_hook :after_configuration
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config_context.execute_after_configuration_callbacks
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extension_instances = []
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logger.debug 'Loaded extensions:'
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extensions.each do |ext_name, ext|
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if ext.is_a?(Hash)
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ext.each do |instance_key, instance|
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logger.debug "== Extension: #{ext_name} #{instance_key}"
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extension_instances << instance
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end
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else
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logger.debug "== Extension: #{ext_name}"
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extension_instances << ext
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end
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end
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extension_instances.each do |ext|
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# Forward Extension helpers to TemplateContext
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Array(ext.class.defined_helpers).each do |m|
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@template_context_class.send(:include, m)
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end
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::Middleman::Extension.activated_extension(ext)
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end
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end
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end
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end
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end
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