Original ticket http://trac.elgg.org/ticket/2110 on 40318396-05-06 by trac user BvdH, assigned to trac user sembrestels.

Elgg version: 1.7

Hello developer,

to make elgg a little bit more efficent it would be great if the CSS and JS-files would be compressed. I have looked for something like that and found a solution (http://www.php-vision.de/plugins-scripte/javascript-css-compressor-code.php) for the simple-cache-case. I poste the code under this comment.

Now my questions: Is this a good way to safe load time? Is it possible to add that (ore something like that) into the next elgg-Version?

Best,

BvdH

Here is the new code:

/**

• Regenerates the simple cache.
  *

• see elgg_view_register_simplecache
  *
  */
  function elgg_view_regenerate_simplecache() {
  global $CONFIG;

  // todo elgg_view() checks if the page set is done (isset($CONFIG->pagesetupdone)) and
  // triggers an event if it's not. Calling elgg_view() here breaks submenus
  // (at least) because the page setup hook is called before any
  // contexts can be correctly set (since this is called before page_handler()).
  // To avoid this, lie about $CONFIG->pagehandlerdone to force
  // the trigger correctly when the first view is actually being output.
  $CONFIG->pagesetupdone = TRUE;

  if (isset($CONFIG->views->simplecache)) {
  if (!file_exists($CONFIG->dataroot . 'views_simplecache')) {
  mkdir($CONFIG->dataroot . 'views_simplecache');
  }

  if (!empty($CONFIG->views->simplecache) && is_array($CONFIG->views->simplecache)) {
      foreach($CONFIG->views->simplecache as $view) {               
          $viewcontents = elgg_view($view);
          // Add for compression
          if(strpos($view, 'css') !== FALSE) $viewcontents = clean_css_code($viewcontents);
          if(strpos($view, 'js') !== FALSE) $viewcontents = clean_js_code($viewcontents);
          $viewname = md5(elgg_get_viewtype() . $view);
          if ($handle = fopen($CONFIG->dataroot . 'views_simplecache/' . $viewname, 'w')) {
              fwrite($handle, $viewcontents);
              fclose($handle);
          }
      }
  }
  
  datalist_set('simplecache_lastupdate', 0);
  

  }

  unset($CONFIG->pagesetupdone);
  }

/** This Functions Cleans CSS Stylesheet Code

• author M. Schwarz (http://www.php-vision.de/plugins-scripte/javascript-css-compressor-code.php)
• param String $jscode
• return String
  */
  function clean_css_code( $code )
  {
  $code = clean_comments ( $code );
  $code = preg_replace('/\s+/',' ', $code);
  $code = preg_replace('/([\ ]?){([\ ]?)/',"{\r\n\t", $code);
  $code = preg_replace('/;([\ ]?)/',";\r\n\t", $code);
  $code = preg_replace("/([\ ]?):([\ ]?)/",":", $code);
  $code = preg_replace("/([\t]?)([\ ]?)}([\ ]?)/","}\r\n", $code);
  return $code;
  }

/** This Functions Cleans Javascript Code

• author M. Schwarz (http://www.php-vision.de/plugins-scripte/javascript-css-compressor-code.php)
• param String $jscode
• return String
  /
  function clean_js_code( $jscode )
  {
  $code = clean_comments ( $jscode );
  $code = preg_replace('#//(.)(\n|\r|\r\n)#','', $code);
  $code = preg_replace('/([\ ]+)/',' ', $code);
  $code = preg_replace('/([\t]+)/',' ', $code);
  $code = preg_replace('#([\n\r]{1,2}?)( ?){( ?)([\n\r]{1,2}?)#',"{", $code);
  $code = preg_replace('/;( ?)([\n\r]{1,2}?)/',";", $code);
  return $code;
  }

/** This Functions Cleans Standard Block Comments( /* )

• author M. Schwarz (http://www.php-vision.de/plugins-scripte/javascript-css-compressor-code.php)
• param String $code
• return String
  /
  function clean_comments ( $code )
  { // $code = preg_replace('#(/_)(.)(_/)#','', $code);
  do{ $start = strpos($code ,'/');
  $ende = strpos($code ,'/', $start);
  $comm = substr( $code, $start+2,$ende-$start-2 );
  $code = str_replace('/'.$comm.'/','',$code);
  }while( $ende );
  return $code;
  }