lib/stanford-mods/searchworks.rb in stanford-mods-0.0.16 vs lib/stanford-mods/searchworks.rb in stanford-mods-0.0.17

@@ -416,10 +416,12 @@
           #try to find a date starting with the most normal date formats and progressing to more wonky ones
           @pub_year=get_plain_four_digit_year pruned_dates
           return @pub_year if @pub_year
           @pub_year=get_double_digit_century pruned_dates
           return @pub_year if @pub_year
+          @pub_year=get_bc_year pruned_dates
+          return @pub_year if @pub_year
           @pub_year=get_three_digit_year pruned_dates
           return @pub_year if @pub_year
           @pub_year=get_single_digit_century pruned_dates
           return @pub_year if @pub_year
         end
@@ -451,22 +453,26 @@
       end
       #Values for the pub date facet. This is less strict than the 4 year date requirements for pub_date
       #@return <Array[String]> with values for the pub date facet
       def pub_date_facet
         if pub_date
+          if pub_date.start_with?('-')
+            return (pub_date.to_i + 1000).to_s + ' B.C.'
+          end
           if pub_date.include? '--'
             cent=pub_date[0,2].to_i
             cent+=1
             cent=cent.to_s+'th century'
-            cent
+            return cent
           else
-            pub_date
+            return pub_date
           end
         else
           nil
         end
       end
+      
 
       # Values are the contents of:
       #   subject/topic
       #   subject/name
       #   subject/title
@@ -589,9 +595,20 @@
       def get_three_digit_year dates
         dates.each do |f_date|
           matches=f_date.scan(/\d{3}/)
           if matches.length > 0
             return matches.first
+          end
+        end
+        return nil
+      end
+      #get the 3 digit BC year, return it as a negative, so -700 for 300 BC. Other methods will translate it to proper display, this is good for sorting.
+      def get_bc_year dates
+        dates.each do |f_date|
+          matches=f_date.scan(/\d{3} B.C./)
+          if matches.length > 0   
+            bc_year=matches.first[0..2]
+            return (bc_year.to_i-1000).to_s
           end
         end
         return nil
       end