image data uri generation

lib/whereuat/assets/context.rb

@@ -0,0 +1,14 @@
+module Whereuat
+  module Assets
+    class Context
+      def bg_url
+        Image.new(images_root+'uat-bg.png')
+      end
+
+      def images_root
+        @images_root ||= Whereuat.dev_root+'images'
+      end
+    end
+  end
+end
+

lib/whereuat/assets/image.rb

@@ -0,0 +1,22 @@
+module Whereuat
+  module Assets
+    class Image
+      def initialize(path)
+        @path = Pathname(path)
+      end
+
+      def to_s
+        "data:#{content_type};base64," + ([@path.read].pack("m").gsub("\n",''))
+      end
+
+      def content_type
+        case @path.to_s[/\.([^\.]+)$/,1]
+        when 'png'
+          'image/png'
+        when 'gif'
+          'image/gif'
+        end
+      end
+    end
+  end
+end