add #load_path to public api, add initialize to simple backend and re…

…move #load_translations from public api

i18n.gemspec

@@ -19,6 +19,6 @@ Gem::Specification.new do |s|
     "spec/core_ext_spec.rb",
     "spec/i18n_spec.rb",
     "spec/spec.opts",
-    "spec/spec_helper.rb"
+    "spec/spec/helper.rb"
   ]
 end

lib/i18n.rb

@@ -10,7 +10,8 @@
 
 module I18n  
   @@backend = nil
-  @@default_locale = 'en-US'
+  @@load_paths = []
+  @@default_locale = :'en-US'
   @@exception_handler = :default_exception_handler
 
   class << self
@@ -49,14 +50,16 @@ def exception_handler=(exception_handler)
       @@exception_handler = exception_handler
     end
 
-    # Allows client libraries to pass arguments that specify a source for 
-    # translation data to be loaded by the backend. The backend defines
-    # acceptable sources. 
+    # Allow clients to register paths providing translation data sources. The 
+    # backend defines acceptable sources.
+    #
     # E.g. the provided SimpleBackend accepts a list of paths to translation
     # files which are either named *.rb and contain plain Ruby Hashes or are
-    # named *.yml and contain YAML data.)
-    def load_translations(*args)
-      backend.load_translations(*args)
+    # named *.yml and contain YAML data. So for the SimpleBackend clients may 
+    # register translation files like this:
+    #   I18n.load_paths << 'path/to/locale/en-US.yml'
+    def load_paths
+      @@load_paths
     end
 
     # Translates, pluralizes and interpolates a given key using a given locale, 
@@ -175,6 +178,4 @@ def normalize_translation_keys(locale, key, scope)
       keys.flatten.map{|k| k.to_sym}
     end
   end
-end
-
-
+end

lib/i18n/backend/simple.rb

@@ -60,6 +60,11 @@ def localize(locale, object, format = :default)
       end
 
       protected
+
+        def initialize
+          load_translations *I18n.load_paths unless I18n.load_paths.empty?
+          @initialized = true
+        end
 
         def translations
           @translations ||= {}
@@ -72,6 +77,7 @@ def translations
         # <tt>%w(currency format)</tt>.
         def lookup(locale, key, scope = [])
           return unless key
+          initialize unless @initialized 
           keys = I18n.send :normalize_translation_keys, locale, key, scope
           keys.inject(translations){|result, k| result[k.to_sym] or return nil }
         end