class Asciidoctor::Converter::DocBook5Converter

def convert_table node
  has_body = false
  result = []
  pgwide_attribute = (node.option? 'pgwide') ? ' pgwide="1"' : ''
  if (frame = node.attr 'frame', 'all', 'table-frame') == 'ends'
    frame = 'topbot'
  end
  grid = node.attr 'grid', nil, 'table-grid'
  result << %(<#{tag_name = node.title? ? 'table' : 'informaltable'}#{common_attributes node.id, node.role, node.reftext}#{pgwide_attribute} frame="#{frame}" rowsep="#{['none', 'cols'].include?(grid) ? 0 : 1}" colsep="#{['none', 'rows'].include?(grid) ? 0 : 1}"#{(node.attr? 'orientation', 'landscape', 'table-orientation') ? ' orient="land"' : ''}>)
  if (node.option? 'unbreakable')
    result << '<?dbfo keep-together="always"?>'
  elsif (node.option? 'breakable')
    result << '<?dbfo keep-together="auto"?>'
  end
  result << %(<title>#{node.title}</title>) if tag_name == 'table'
  col_width_key = if (width = (node.attr? 'width') ? (node.attr 'width') : nil)
    TABLE_PI_NAMES.each do |pi_name|
      result << %(<?#{pi_name} table-width="#{width}"?>)
    end
    'colabswidth'
  else
    'colpcwidth'
  end
  result << %(<tgroup cols="#{node.attr 'colcount'}">)
  node.columns.each do |col|
    result << %(<colspec colname="col_#{col.attr 'colnumber'}" colwidth="#{col.attr col_width_key}*"/>)
  end
  node.rows.to_h.each do |tsec, rows|
    next if rows.empty?
    has_body = true if tsec == :body
    result << %(<t#{tsec}>)
    rows.each do |row|
      result << '<row>'
      row.each do |cell|
        halign_attribute = (cell.attr? 'halign') ? %( align="#{cell.attr 'halign'}") : ''
        valign_attribute = (cell.attr? 'valign') ? %( valign="#{cell.attr 'valign'}") : ''
        colspan_attribute = cell.colspan ? %( namest="col_#{colnum = cell.column.attr 'colnumber'}" nameend="col_#{colnum + cell.colspan - 1}") : ''
        rowspan_attribute = cell.rowspan ? %( morerows="#{cell.rowspan - 1}") : ''
        # NOTE <entry> may not have whitespace (e.g., line breaks) as a direct descendant according to DocBook rules
        entry_start = %(<entry#{halign_attribute}#{valign_attribute}#{colspan_attribute}#{rowspan_attribute}>)
        if tsec == :head
          cell_content = cell.text
        else
          case cell.style
          when :asciidoc
            cell_content = cell.content
          when :literal
            cell_content = %(<literallayout class="monospaced">#{cell.text}</literallayout>)
          when :header
            cell_content = (cell_content = cell.content).empty? ? '' : %(<simpara><emphasis role="strong">#{cell_content.join '</emphasis></simpara><simpara><emphasis role="strong">'}</emphasis></simpara>)
          else
            cell_content = (cell_content = cell.content).empty? ? '' : %(<simpara>#{cell_content.join '</simpara><simpara>'}</simpara>)
          end
        end
        entry_end = (node.document.attr? 'cellbgcolor') ? %(<?dbfo bgcolor="#{node.document.attr 'cellbgcolor'}"?></entry>) : '</entry>'
        result << %(#{entry_start}#{cell_content}#{entry_end})
      end
      result << '</row>'
    end
    result << %(</t#{tsec}>)
  end
  result << '</tgroup>'
  result << %(</#{tag_name}>)
  logger.warn 'tables must have at least one body row' unless has_body
  result.join LF
end