gistfile1

def hos_server(host, attr)
  value = nil
  server_block = nil
  File.open("/etc/hos_server").each do |line|
    line.chomp!
    if line =~ /^server:\s+(\S+)\s+\{\s*$/
      if host == $1
        server_block = host
      else
        server_block = nil
      end
   elsif host == server_block and line =~ /^\s*([^:]+):\s*(.*);\s*$/
     if attr == $1
       value = $2
       break
     end
   end
  end
  value
end

["antivirus", "backupserver", ...].each do |hos_fact|
  Facter.add("hos_#{hos_fact}") do
    setcode do
      hos_server($fqdn, hos_fact)
    end   
  end   
end