Class: Rack::PageSpeed::Filters::InlineImages

Inherits:
Rack::PageSpeed::Filter
  • Object
show all
Defined in:
lib/rack/pagespeed/filters/inline_images.rb

Instance Method Summary collapse

Instance Method Details

#execute!(document) ⇒ Object 



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# File 'lib/rack/pagespeed/filters/inline_images.rb', line 4

def execute! document
  nodes = document.css('img')
  return false unless nodes.count > 0
  nodes.each do |node|
    status, headers, body = content_for node
    next if status != 200 or headers['Content-Length'].to_i > (@options[:max_size] or 1024)
    url = node['src']
    img = node.clone
    full_body = ""; body.each do |part| full_body << part end
    img['src'] = "data:#{Rack::Mime.mime_type(File.extname(path_for(node)))};base64,#{[full_body].pack('m')}"
    img['alt'] = node['alt'] if node['alt']
    node.before img
    node.remove
  end
end