add email search year

lib/dates_from_string.rb

@@ -50,6 +50,10 @@ def get_clear_text
     @clear_text.strip
   end
 
+  def email_date(email)
+    email.match(/(?:(?:19|20)[0-9]{2})/).to_s
+  end
+
   def date_format_by_country(date_format)
     DATE_COUNTRY_FORMAT[date_format.to_sym].call
   end

lib/dates_from_string/version.rb

@@ -1,3 +1,3 @@
 class DatesFromString
-  VERSION = "1.1.0"
+  VERSION = "1.2.0"
 end

spec/dates_from_string_spec.rb

@@ -585,5 +585,29 @@
       expect(subject.get_clear_text).to eq(output)
     end
 
+    it "find year in email one" do
+      date_from_string = DatesFromString.new()
+      input = '[email protected]'
+      output = "1988"
+
+      expect(date_from_string.email_date(input)).to eq(output)
+    end
+
+    it "find year in email two" do
+      date_from_string = DatesFromString.new()
+      input = '[email protected]'
+      output = "1988"
+
+      expect(date_from_string.email_date(input)).to eq(output)
+    end
+
+    it "find year in email three" do
+      date_from_string = DatesFromString.new()
+      input = '[email protected]'
+      output = "1988"
+
+      expect(date_from_string.email_date(input)).to eq(output)
+    end
+
   end
 end