/**
* Method to build the CSS / JavaScript cache
*
* @param string $type
* @param array $matches
*
* @return string
*/
private function buildCacheUrl($type, $list = array())
{
// Check for the cache-path
$tmp_path = JPATH_SITE . '/cache/plg_scriptmerge/';
if (@is_dir($tmp_path) == false) {
jimport('joomla.filesystem.folder');
JFolder::create($tmp_path);
}
if (!empty($list)) {
$cacheId = $this->getHashFromList($list);
$cacheFile = $cacheId . '.' . $type;
$cachePath = $tmp_path . '/' . $cacheFile;
$cacheExpireFile = $cachePath . '_expire';
$hasExpired = false;
if (ScriptMergeHelper::hasExpired($cacheExpireFile, $cachePath)) {
$hasExpired = true;
}
if (file_exists($cachePath)) {
foreach ($list as $file) {
if (file_exists($file['file']) == false) {
$hasExpired = true;
break;
}
if (filemtime($file['file'] > filemtime($cachePath))) {
$hasExpired = true;
break;
}
}
} else {
$hasExpired = true;
}
// Check the cache
if ($hasExpired) {
$buffer = null;
foreach ($list as $file) {
if (isset($file['file'])) {
// CSS-code
if ($type == 'css') {
$buffer .= ScriptMergeHelper::getCssContent($file['file']);
// JS-code
} else {
$buffer .= ScriptMergeHelper::getJsContent($file['file']);
}
}
}
// Clean up CSS-code
if ($type == 'css') {
$buffer = ScriptMergeHelper::cleanCssContent($buffer);
// Clean up JS-code
} else {
$buffer = ScriptMergeHelper::cleanJsContent($buffer);
}
// Write this buffer to a file
jimport('joomla.filesystem.file');
JFile::write($cachePath, $buffer);
// Create a minified version of this file
$this->createMinified($type, $cachePath);
// Set the cache parameter
$this->createCacheExpireFile($cacheExpireFile);
}
}
// Construct the minified version
if ($type == 'js') {
$minifiedFile = preg_replace('/\\.js$/', '.min.js', $cacheFile);
} else {
$minifiedFile = preg_replace('/\\.css$/', '.min.css', $cacheFile);
}
// Return the minified version if it exists
if (file_exists(JPATH_SITE . '/cache/plg_scriptmerge/' . $minifiedFile)) {
$url = JURI::root() . 'cache/plg_scriptmerge/' . $minifiedFile;
// Return the cache-file itself
} else {
$url = JURI::root() . 'cache/plg_scriptmerge/' . $cacheFile;
}
// Domainname sharding
$domain = $type == 'js' ? $this->params->get('js_domain') : $this->params->get('css_domain');
$url = $this->replaceUrlDomain($url, $domain);
// Protocol change
if (JURI::getInstance()->isSSL()) {
$url = str_replace('http://', 'https://', $url);
} else {
$url = str_replace('https://', 'http://', $url);
}
return $url;
}
if ($type == 'css') {
if (!preg_match('/\\.css$/', $file)) {
continue;
}
$buffer .= $helper->getCssContent($file);
} else {
if (!preg_match('/\\.js$/', $file)) {
continue;
}
$buffer .= $helper->getJsContent($file);
}
}
}
// Clean up CSS-code
if ($type == 'css') {
$buffer = ScriptMergeHelper::cleanCssContent($buffer);
// Clean up JS-code
} else {
$buffer = ScriptMergeHelper::cleanJsContent($buffer);
}
// Handle GZIP support
$compression = false;
if (function_exists('gzencode') && ScriptMergeHelper::getParams()->get('force_gzip', 0) == 1) {
$gzip = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip');
$deflate = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate');
$compression = $gzip ? 'gzip' : ($deflate ? 'deflate' : false);
$buffer = gzencode($buffer, 9, $gzip ? FORCE_GZIP : FORCE_DEFLATE);
}
// Send HTTP-headers
ScriptMergeHelper::sendHttpHeaders($buffer, $helper->getParams(), $compression);
// Print the buffer
