:whitewash
removes all comments, styling and attributes in
addition to doing markup-fixer-uppery and pruning unsafe tags. I like to
call this “whitewashing”, since it’s like putting a new layer of
paint on top of the HTML input to make it look
nice.
messy_markup = "ohai! <div id='foo' class='bar' style='margin: 10px'>div with attributes</div>" Loofah.fragment(messy_markup).scrub!(:whitewash) => "ohai! <div>div with attributes</div>"
One use case for this scrubber is to clean up HTML that was cut-and-pasted from Microsoft Word into a WYSIWYG editor or a rich text editor. Microsoft’s software is famous for injecting all kinds of cruft into its HTML output. Who needs that crap? Certainly not me.
# File lib/loofah/scrubbers.rb, line 149 def scrub(node) case node.type when Nokogiri::XML::Node::ELEMENT_NODE if HTML5::Scrub.allowed_element? node.name node.attributes.each { |attr| node.remove_attribute(attr.first) } return CONTINUE if node.namespaces.empty? end when Nokogiri::XML::Node::TEXT_NODE, Nokogiri::XML::Node::CDATA_SECTION_NODE return CONTINUE end node.remove STOP end
# File lib/loofah/scrubbers.rb, line 145 def initialize @direction = :top_down end