class Asciidoctor::SyntaxHighlighter::HighlightJsAdapter

def docinfo location, doc, opts
  base_url = doc.attr 'highlightjsdir', %(#{opts[:cdn_base_url]}/highlight.js/#{HIGHLIGHT_JS_VERSION})
  if location == :head
    %(<link rel="stylesheet" href="#{base_url}/styles/#{doc.attr 'highlightjs-theme', 'github'}.min.css"#{opts[:self_closing_tag_slash]}>)
  else # :footer
    %(<script src="#{base_url}/highlight.min.js"></script>
(doc.attr? 'highlightjs-languages') ? ((doc.attr 'highlightjs-languages').split ',').map {|lang| %[<script src="#{base_url}/languages/#{lang.lstrip}.min.js"></script>\n] }.join : ''}<script>
 (!hljs.initHighlighting.called) {
hljs.initHighlighting.called = true
;[].slice.call(document.querySelectorAll('pre.highlight > code[data-lang]')).forEach(function (el) { hljs.highlightBlock(el) })
script>)
  end
end

def docinfo? location
  true
end

def format node, lang, opts
  super node, lang, (opts.merge transform: proc {|_, code| code['class'] = %(language-#{lang || 'none'} hljs) })
end

def initialize *args
  super
  @name = @pre_class = 'highlightjs'
end