i18n: add locale loading feature to YARD::RegistryStore

lib/yard/registry_store.rb

@@ -19,6 +19,7 @@ def initialize
       @notfound = {}
       @loaded_objects = 0
       @available_objects = 0
+      @locales = {}
       @store[:root] = CodeObjects::RootObject.allocate
       @store[:root].send(:initialize, nil, :root)
     end
@@ -108,6 +109,13 @@ def values_for_type(type, reload = false)
     # @return [CodeObjects::RootObject] the root object
     def root; @store[:root] end
 
+    # @param [String] name the locale name.
+    # @return [I18n::Locale] the locale object for +name+.
+    # @since 0.8.3
+    def locale(name)
+      @locales[name] ||= load_locale(name)
+    end
+
     # @param [String, nil] file the name of the yardoc db to load
     # @return [Boolean] whether the database was loaded
     def load(file = nil)
@@ -283,6 +291,13 @@ def load_root
       end
     end
 
+    def load_locale(name)
+      locale = I18n::Locale.new(name)
+      po_dir = "po"
+      locale.load(po_dir)
+      locale
+    end
+
     def all_disk_objects
       Dir.glob(File.join(objects_path, '**/*')).select {|f| File.file?(f) }
     end
@@ -302,4 +317,4 @@ def write_checksums
       end
     end
   end
-end
+end

spec/registry_store_spec.rb

@@ -302,4 +302,13 @@ def saves_to_multidb
       @store.destroy(true).should == true
     end
   end
+
+  describe '#locale' do
+    it "should load ./po/LOCALE_NAME.po" do
+      fr_locale = I18n::Locale.new("fr")
+      I18n::Locale.should_receive(:new).with("fr").and_return(fr_locale)
+      fr_locale.should_receive(:load).with("po")
+      @store.locale("fr").should == fr_locale
+    end
+  end
 end