class ReverseMarkdown::Converters::Pre

def convert(node, state = {})
  content = treat_children(node, state)
  if ReverseMarkdown.config.github_flavored
    +"\n```#{language(node)}\n" << content.strip << "\n```\n"
  else
    +"\n\n    " << content.lines.to_a.join("    ") << "\n\n"
  end
end

def language(node)
  lang = language_from_highlight_class(node)
  lang || language_from_confluence_class(node)
end

def language_from_confluence_class(node)
  node['class'].to_s[/brush:\s?(:?.*);/, 1]
end

def language_from_highlight_class(node)
  node.parent['class'].to_s[/highlight-([a-zA-Z0-9]+)/, 1]
end

def treat(node, state)
  case node.name
  when 'code', 'text'
    node.text.strip
  when 'br'
    "\n"
  else
    super
  end
end