Link to the Markdown spec

[rails.git] / lib / rich_text.rb

diff --git a/lib/rich_text.rb b/lib/rich_text.rb
index ec5e9e473789a9d70c7e8fb770cac51e14be8137..f2a558e6af8dcc92aae9aa588ce8216edb0ab248 100644 (file)
--- a/lib/rich_text.rb
+++ b/lib/rich_text.rb
@@ -7,7 +7,29 @@ module RichText
     end
   end
 
-  class HTML < String
+  class Base < String
+    def spam_score
+      link_count = 0
+      link_size = 0
+
+      doc = Nokogiri::HTML(to_html)
+
+      if doc.content.length > 0
+        doc.xpath("//a").each do |link|
+          link_count += 1
+          link_size += link.content.length
+        end
+
+        link_proportion = link_size.to_f / doc.content.length.to_f
+      else
+        link_proportion = 0
+      end
+
+      return [link_proportion - 0.2, 0.0].max * 200 + link_count * 20
+    end
+  end
+
+  class HTML < Base
     include ActionView::Helpers::TextHelper
     include ActionView::Helpers::TagHelper
 
@@ -34,7 +56,7 @@ module RichText
     end
   end
 
-  class Markdown < String
+  class Markdown < Base
     def to_html
       html_parser.render(self).html_safe
     end