lib/traco.rb in traco-3.1.2 vs lib/traco.rb in traco-3.1.3

@@ -1,11 +1,57 @@
 require "traco/version"
-require "traco/translates"
+require "traco/attributes"
 require "traco/class_methods"
-require "traco/localized_reader"
+require "traco/locale_fallbacks"
+require "traco/translates"
 
 module Traco
-  # E.g. :sv -> :sv, :"pt-BR" -> :pt_br
-  def self.locale_suffix(locale)
-    locale.to_s.downcase.sub("-", "_").to_sym
+  COLUMN_RE =
+    /\A
+      (?<attribute>\w+?)        # title
+      _                         # _
+      (?<primary>[a-z]{2})      # pt
+      (
+        _                       # _
+        (?<extended>[a-z]{2})   # br
+      )?
+    \z/x
+
+  # @example
+  #   Traco.column("title", :sv)      # => :title_sv
+  #   Traco.column("title", :"pt-BR") # => :title_pt_br
+  def self.column(attribute, locale)
+    normalized_locale = locale.to_s.downcase.sub("-", "_")
+    "#{attribute}_#{normalized_locale}".to_sym
+  end
+
+  # @example
+  #   Traco.split_localized_column("title_sv")     # => [:title, :sv]
+  #   Traco.split_localized_column("title_pt_br")  # => [:title, :"pt-BR"]
+  #   Traco.split_localized_column("unlocalized")  # => nil
+  def self.split_localized_column(column)
+    match_data = column.to_s.match(COLUMN_RE)
+    return unless match_data
+
+    attribute       = match_data[:attribute]
+    primary_locale  = match_data[:primary]
+    extended_locale = match_data[:extended]
+
+    if extended_locale
+      locale = "#{primary_locale}-#{extended_locale.upcase}"
+    else
+      locale = primary_locale
+    end
+
+    [ attribute.to_sym, locale.to_sym ]
+  end
+
+  def self.locale_name(locale)
+    default = locale.to_s.upcase.sub("_", "-")
+    I18n.t(locale, scope: :"i18n.languages", default: default)
+  end
+
+  def self.locale_with_fallbacks(locale, fallback_option)
+    locale_fallbacks_resolver = LocaleFallbacks.new(fallback_option)
+    locale_fallbacks_resolver[locale]
   end
 end