public static function compressCSS()
{
//function to compress css files
require_once __DIR__ . '/classes/cssmin.php';
$doc = JFactory::getDocument();
$app = JFactory::getApplication();
$cachetime = $app->get('cachetime', 15);
$all_stylesheets = $doc->_styleSheets;
$cache_path = JPATH_CACHE . '/com_templates/templates/' . self::getTemplate();
$stylesheets = array();
$root_url = JURI::root(true);
$minifiedCode = '';
$md5sum = '';
//Check all local stylesheets
foreach ($all_stylesheets as $key => $value) {
$css_file = str_replace($root_url, JPATH_ROOT, $key);
global $absolute_url;
$absolute_url = $key;
//absoulte path of each css file
if (JFile::exists($css_file)) {
$stylesheets[] = $key;
$md5sum .= md5($key);
$compressed = CSSMinify::process(JFile::read($css_file));
$fixUrl = preg_replace_callback('/url\\(([^\\)]*)\\)/', function ($matches) {
$url = str_replace(array('"', '\''), '', $matches[1]);
global $absolute_url;
$base = dirname($absolute_url);
while (preg_match('/^\\.\\.\\//', $url)) {
$base = dirname($base);
$url = substr($url, 3);
}
$url = $base . '/' . $url;
return "url('{$url}')";
}, $compressed);
$minifiedCode .= "/*------ " . JFile::getName($css_file) . " ------*/\n" . $fixUrl . "\n\n";
//add file name to compressed css
unset($doc->_styleSheets[$key]);
//Remove sripts
}
}
//Compress All stylesheets
if ($minifiedCode) {
if (!JFolder::exists($cache_path)) {
JFolder::create($cache_path, 0755);
} else {
$file = $cache_path . '/' . md5($md5sum) . '.css';
if (!JFile::exists($file)) {
JFile::write($file, $minifiedCode);
} else {
if (filesize($file) == 0 || filemtime($file) + $cachetime * 60 < time()) {
JFile::write($file, $minifiedCode);
}
}
$doc->addStylesheet(JURI::base(true) . '/cache/com_templates/templates/' . self::getTemplate() . '/' . md5($md5sum) . '.css');
}
}
return;
}
/**
* Minify a CSS string
*
* @param string $css
*
* @param array $options (currently ignored)
*
* @return string
*/
public static function process($css, $options = array())
{
$obj = new CSSMinify($options);
return $obj->_process($css);
}
function compressCSS() {//function to compress css files
require_once (dirname(__FILE__).DS."class.cssminify.php");//include cssminify class
$css_files = array();
$cache_time = $this->getParam('cache_time');//Cache time in minute
$helix_folder='helix_assets';//path of cache where to save
$output = array();
$md5sum = null;
$csss = $this->API->_styleSheets;//get all CSS
foreach ($csss as $fileSrc => $fileAttr) {//separate path from attribute
$md5sum .= md5($fileSrc);
$css_files[] = $fileSrc;
}
if (!is_writable(JPATH_CACHE)) {//check for cache path writable, if not return
return;
}
if (is_writable(JPATH_CACHE)) {//add helix_assets folder under cache directory
if (!file_exists(JPATH_CACHE.DS.$helix_folder)) mkdir (JPATH_CACHE.DS.$helix_folder);
}
if (count($css_files) > 0) {//if any css file available
$cache_name = md5($md5sum) . ".css";
$cache_path = JPATH_CACHE . DS . $helix_folder . DS . $cache_name;
$diff=false;
//see if file is stale
if (!file_exists($cache_path)) {
$diff=true;
} elseif(filesize($cache_path) == 0 || ((filemtime($cache_path) + $cache_time * 60) < time())) {
$diff=true;
}
foreach ($css_files as $files) {
unset($this->API->_styleSheets[$files]); //Remove all css files from the header
}
if ($diff) {
$output = '';
foreach ($css_files as $files) {
$filepath = $this->realPath($files);//convert to real url
global $absolute_url;
$absolute_url = $files;//absoulte path of each css file
if (JFile::exists($filepath)) {
$css = CSSMinify::process(JFile::read($filepath));//read and compress css files
$css=preg_replace_callback('/url\(([^\)]*)\)/', array($this, 'replaceUrl'), $css);//call replaceUrl function to set absolute value to the urls
$output .= "/*------ " . $files . " ------*/\n" . $css . "\n\n";//add file name to compressed css
}
}
JFile::write($cache_path, $output);//write cache to the joomla cache directory
}
$cache_url = $this->API->baseurl . "/cache/" . $helix_folder . '/' . $cache_name;//path of css cache to add as stylesheet
$this->API->addStyleSheet($cache_url);//add stylesheet to the header
}
}
private static function compressCSS()
{
//function to compress css files
self::getInstance()->Import('core/classes/cssmin.php');
$css_files = array();
$cache_time = self::getInstance()->Param('cache_time');
//Cache time in minute
$helix_folder = 'helix_assets';
//path of cache where to save
$output = array();
$md5sum = null;
$csss = self::getInstance()->getDocument('_styleSheets');
//get all css
foreach ($csss as $fileSrc => $fileAttr) {
//separate path from attribute
$md5sum .= md5($fileSrc);
$css_files[] = $fileSrc;
}
if (!is_writable(JPATH_CACHE)) {
//check for cache path writable, if not return
return;
}
if (is_writable(JPATH_CACHE)) {
//add helix_assets folder under cache directory
if (!file_exists(JPATH_CACHE . DIRECTORY_SEPARATOR . $helix_folder)) {
mkdir(JPATH_CACHE . DIRECTORY_SEPARATOR . $helix_folder);
}
}
if (count($css_files) > 0) {
//if any css file available
$cache_name = md5($md5sum) . ".css";
$cache_path = JPATH_CACHE . DIRECTORY_SEPARATOR . $helix_folder . DIRECTORY_SEPARATOR . $cache_name;
$diff = false;
//see if file is stale
if (!file_exists($cache_path)) {
$diff = true;
} elseif (filesize($cache_path) == 0 || filemtime($cache_path) + $cache_time * 60 < time()) {
$diff = true;
}
foreach ($css_files as $files) {
$external = self::getInstance()->isExternalURL($files);
if ($external) {
continue;
}
unset(self::getInstance()->getDocument()->_styleSheets[$files]);
//Remove all css files from the header
}
if ($diff) {
$output = '';
foreach ($css_files as $files) {
$external = self::getInstance()->isExternalURL($files);
if ($external) {
continue;
}
$filepath = self::getInstance()->realPath($files);
//convert to real url
global $absolute_url;
$absolute_url = $files;
//absoulte path of each css file
if (JFile::exists($filepath)) {
$css = CSSMinify::process(JFile::read($filepath));
//read and compress css files
$css = preg_replace_callback('/url\\(([^\\)]*)\\)/', array(self::getInstance(), 'replaceUrl'), $css);
//call replaceUrl function to set absolute value to the urls
$output .= "/*------ " . $files . " ------*/\n" . $css . "\n\n";
//add file name to compressed css
}
}
JFile::write($cache_path, $output);
//write cache to the joomla cache directory
}
$cache_url = self::getInstance()->baseURL() . "/cache/" . $helix_folder . '/' . $cache_name;
//path of css cache to add as stylesheet
self::getInstance()->document->addStyleSheet($cache_url);
//add stylesheet to the header
}
}
