Updated mcollective.init according to OSCI-658

[packages/precise/mcollective.git] / lib / mcollective / vendor / i18n / lib / i18n / backend / chain.rb

diff --git a/lib/mcollective/vendor/i18n/lib/i18n/backend/chain.rb b/lib/mcollective/vendor/i18n/lib/i18n/backend/chain.rb
new file mode 100644 (file)
index 0000000..5a0c59b
--- /dev/null
+++ b/lib/mcollective/vendor/i18n/lib/i18n/backend/chain.rb
@@ -0,0 +1,78 @@
+module I18n
+  module Backend
+    # Backend that chains multiple other backends and checks each of them when
+    # a translation needs to be looked up. This is useful when you want to use
+    # standard translations with a Simple backend but store custom application
+    # translations in a database or other backends.
+    #
+    # To use the Chain backend instantiate it and set it to the I18n module.
+    # You can add chained backends through the initializer or backends
+    # accessor:
+    #
+    #   # preserves the existing Simple backend set to I18n.backend
+    #   I18n.backend = I18n::Backend::Chain.new(I18n::Backend::ActiveRecord.new, I18n.backend)
+    #
+    # The implementation assumes that all backends added to the Chain implement
+    # a lookup method with the same API as Simple backend does.
+    class Chain
+      module Implementation
+        include Base
+
+        attr_accessor :backends
+
+        def initialize(*backends)
+          self.backends = backends
+        end
+
+        def reload!
+          backends.each { |backend| backend.reload! }
+        end
+
+        def store_translations(locale, data, options = {})
+          backends.first.store_translations(locale, data, options)
+        end
+
+        def available_locales
+          backends.map { |backend| backend.available_locales }.flatten.uniq
+        end
+
+        def translate(locale, key, default_options = {})
+          namespace = nil
+          options = default_options.except(:default)
+
+          backends.each do |backend|
+            catch(:exception) do
+              options = default_options if backend == backends.last
+              translation = backend.translate(locale, key, options)
+              if namespace_lookup?(translation, options)
+                namespace ||= {}
+                namespace.merge!(translation)
+              elsif !translation.nil?
+                return translation
+              end
+            end
+          end
+
+          return namespace if namespace
+          throw(:exception, I18n::MissingTranslation.new(locale, key, options))
+        end
+
+        def localize(locale, object, format = :default, options = {})
+          backends.each do |backend|
+            catch(:exception) do
+              result = backend.localize(locale, object, format, options) and return result
+            end
+          end
+          throw(:exception, I18n::MissingTranslation.new(locale, format, options))
+        end
+
+        protected
+          def namespace_lookup?(result, options)
+            result.is_a?(Hash) && !options.has_key?(:count)
+          end
+      end
+
+      include Implementation
+    end
+  end
+end