core.rb in plastic-0.2.2

- old
+ new

@@ -1,7 +1,7 @@
 class Plastic
-  BRANDS = [:visa, :mastercard, :american_express, :discover]
+  BRANDS = [:visa, :mastercard, :american_express, :discover, :jcb]
 
   attr_accessor :pan, :expiration
   attr_accessor :track_name, :surname, :given_name, :title
   attr_accessor :service_code, :cvv2
   attr_accessor :track_1, :track_2
@@ -38,15 +38,18 @@
     expiration_mm.to_i
   end
 
   def brand
     case pan
-    when /^4/      then :visa
-    when /^5[1-5]/ then :mastercard
-    when /^677189/ then :mastercard
-    when /^6011/   then :discover
-    when /^65/     then :discover
-    when /^3[47]/  then :american_express
+    when /^4\d{15}$/        then :visa
+    when /^5[1-5]\d{14}$/   then :mastercard
+    when /^677189\d{10}$/   then :mastercard
+    when /^6011\d{12}$/     then :discover
+    when /^64[4-9]\d{13}$/  then :discover
+    when /^65\d{14}$/       then :discover
+    when /^3[47]\d{13}$/    then :american_express
+    when /^352[8-9]\d{12}$/ then :jcb
+    when /^35[3-8]\d{13}$/  then :jcb
     end
   end
 
   def valid?
     value_is_present?(pan) && value_is_present?(expiration) && valid_pan? && valid_expiration?