<?php /* ATOM/digitalnature */

  // Serve compressed js/css content
  // we don't need to check for the 'enable gzip' option here since this script does not depend on wp and shouldn't raise problems with any plugins

  // @todo: rewrite URLs. eg /c.php?file=style.css to /style.css

  // get the file name
  $file = urldecode($_GET['file']);

  if(version_compare(PHP_VERSION, '5.1.2') >= 0) $ext = pathinfo(parse_url($file, PHP_URL_PATH), PATHINFO_EXTENSION);
  else $ext = substr(strrchr($file, '.'), 1);

  if(!in_array($ext, array('css', 'js'))) exit();

  switch($ext){
    default:
    case 'css':
      $type = 'text/css';
      break;
    case 'js':
      $type = 'text/javascript';
      break;
  }

  header('Content-type: '.$type);
  header('Cache-Control: max-age='.(60*60*6).', must-revalidate');

  // white space removal, use it if gzip is not available
  function compress($buffer){
    $buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
    $buffer = str_replace(array("\r\n", "\r", "\n", "\t", '  ', '    ', '    '), ' ', $buffer);
    return $buffer;
  }

  if (!file_exists($file)) exit();

  ob_start((extension_loaded('zlib') && substr_count($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip')) ? 'ob_gzhandler' : 'compress');
  include_once $file;
?>