var.rb in octopress-ink-1.0.0.alpha.22

- old
+ new

@@ -1,8 +1,9 @@
 module Octopress
   module Helpers
     module Var
+      TERNARY = /(.*?)\(\s*(.+?)\s+\?\s+(.+?)\s+:\s+(.+?)\s*\)(.+)?/
 
       def self.set_var(var, operator, value, context)
         case operator
         when '||='
           context.scopes.last[var] = value if context.scopes.last[var].nil?
@@ -17,16 +18,24 @@
         end
         context
       end
 
       def self.get_value(vars, context)
+        if vars =~ TERNARY
+          vars = $1 + evaluate_ternary($2, $3, $4, context) + $5
+        end
         vars = vars.strip.gsub(/ or /, ' || ')
         vars = vars.split(/ \|\| /).map { |v|
           Liquid::Variable.new(v.strip).render(context)
         }.compact
 
         vars.empty? ? nil : vars.first
       end
+
+      def self.evaluate_ternary(expression, if_true, if_false, context)
+        Conditional.parse("if #{expression}", context) ? if_true : if_false
+      end
+
     end
   end
 end
 