Adds TagSanitizer

lib/tag_sanitizer.rb

@@ -0,0 +1,17 @@
+class TagSanitizer
+
+  DISALLOWED_STRINGS = %w(? < > = /)
+
+  def sanitize_tag(tag)
+    tag = tag.dup
+    DISALLOWED_STRINGS.each do |s|
+      tag.gsub!(s, '')
+    end
+    tag
+  end
+
+  def sanitize_tag_list(tag_list)
+    tag_list.map { |tag| sanitize_tag(tag) }
+  end
+
+end