1 files changed, 54 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/number_helper/number_to_phone.rb b/activesupport/lib/active_support/number_helper/number_to_phone.rb
new file mode 100644
index 0000000000..171c2dff18
--- /dev/null
+++ b/activesupport/lib/active_support/number_helper/number_to_phone.rb
@@ -0,0 +1,54 @@
+require 'active_support/number_helper/number_converter'
+require 'active_support/number_helper/number_to_rounded'
+
+module ActiveSupport
+  module NumberHelper
+    class NumberToPhoneConverter < NumberConverter
+      def convert
+        str = ''
+        str << country_code(opts[:country_code])
+        str << convert_to_phone_number(@number.to_s.strip)
+        str << phone_ext(opts[:extension])
+      end
+
+      private
+
+        def convert_to_phone_number(number)
+          if opts[:area_code]
+            convert_with_area_code(number)
+          else
+            convert_without_area_code(number)
+          end
+        end
+
+        def convert_with_area_code(number)
+          number.gsub(/(\d{1,3})(\d{3})(\d{4}$)/,"(\\1) \\2#{delimiter}\\3")
+        end
+
+        def convert_without_area_code(number)
+          number.tap { |n|
+            n.gsub!(/(\d{0,3})(\d{3})(\d{4})$/,"\\1#{delimiter}\\2#{delimiter}\\3")
+            n.slice!(0, 1) if begins_with_delimiter?(n)
+          }
+        end
+
+        def begins_with_delimiter?(number)
+          number.start_with?(delimiter) && !delimiter.blank?
+        end
+
+        def delimiter
+          opts[:delimiter] || "-"
+        end
+
+        def country_code(code)
+          code.blank? ? "" : "+#{code}#{delimiter}"
+        end
+
+        def phone_ext(ext)
+          ext.blank? ? "" : " x #{ext}"
+        end
+
+    end
+  end
+end
+