X-Git-Url: https://review.fuel-infra.org/gitweb?a=blobdiff_plain;f=lib%2Fmcollective%2Fvendor%2Fi18n%2Flib%2Fi18n%2Fbackend%2Ffallbacks.rb;fp=lib%2Fmcollective%2Fvendor%2Fi18n%2Flib%2Fi18n%2Fbackend%2Ffallbacks.rb;h=7252bb00dc1ec6a8d1c629cee2b41592b6c89cc7;hb=b87d2f4e68281062df1913440ca5753ae63314a9;hp=0000000000000000000000000000000000000000;hpb=ab0ea530b8ac956091f17b104ab2311336cfc250;p=packages%2Fprecise%2Fmcollective.git

diff --git a/lib/mcollective/vendor/i18n/lib/i18n/backend/fallbacks.rb b/lib/mcollective/vendor/i18n/lib/i18n/backend/fallbacks.rb
new file mode 100644
index 0000000..7252bb0
--- /dev/null
+++ b/lib/mcollective/vendor/i18n/lib/i18n/backend/fallbacks.rb
@@ -0,0 +1,65 @@
+# I18n locale fallbacks are useful when you want your application to use
+# translations from other locales when translations for the current locale are
+# missing. E.g. you might want to use :en translations when translations in
+# your applications main locale :de are missing.
+#
+# To enable locale fallbacks you can simply include the Fallbacks module to
+# the Simple backend - or whatever other backend you are using:
+#
+#   I18n::Backend::Simple.include(I18n::Backend::Fallbacks)
+module I18n
+  @@fallbacks = nil
+
+  class << self
+    # Returns the current fallbacks implementation. Defaults to +I18n::Locale::Fallbacks+.
+    def fallbacks
+      @@fallbacks ||= I18n::Locale::Fallbacks.new
+    end
+
+    # Sets the current fallbacks implementation. Use this to set a different fallbacks implementation.
+    def fallbacks=(fallbacks)
+      @@fallbacks = fallbacks
+    end
+  end
+
+  module Backend
+    module Fallbacks
+      # Overwrites the Base backend translate method so that it will try each
+      # locale given by I18n.fallbacks for the given locale. E.g. for the
+      # locale :"de-DE" it might try the locales :"de-DE", :de and :en
+      # (depends on the fallbacks implementation) until it finds a result with
+      # the given options. If it does not find any result for any of the
+      # locales it will then throw MissingTranslation as usual.
+      #
+      # The default option takes precedence over fallback locales only when
+      # it's a Symbol. When the default contains a String, Proc or Hash
+      # it is evaluated last after all the fallback locales have been tried.
+      def translate(locale, key, options = {})
+        return super if options[:fallback]
+        default = extract_non_symbol_default!(options) if options[:default]
+
+        options[:fallback] = true
+        I18n.fallbacks[locale].each do |fallback|
+          catch(:exception) do
+            result = super(fallback, key, options)
+            return result unless result.nil?
+          end
+        end
+        options.delete(:fallback)
+
+        return super(locale, nil, options.merge(:default => default)) if default
+        throw(:exception, I18n::MissingTranslation.new(locale, key, options))
+      end
+
+      def extract_non_symbol_default!(options)
+        defaults = [options[:default]].flatten
+        first_non_symbol_default = defaults.detect{|default| !default.is_a?(Symbol)}
+        if first_non_symbol_default
+          options[:default] = defaults[0, defaults.index(first_non_symbol_default)]
+        end
+        return first_non_symbol_default
+      end
+
+    end
+  end
+end