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<?php
abstract class OC_Minimizer
{
protected $files = array();
protected function appendIfExist($root, $webroot, $file) {
if (is_file($root.'/'.$file)) {
$this->files[] = array($root, $webroot, $file);
return true;
}
return false;
}
public function getLastModified($files) {
$last_modified = 0;
foreach($files as $file_info) {
$file = $file_info[0] . '/' . $file_info[2];
$filemtime = filemtime($file);
if ($filemtime > $last_modified) {
$last_modified = $filemtime;
}
}
return $last_modified;
}
abstract public function minimizeFiles($files);
public function output($files, $cache_key) {
header('Content-Type: '.$this->contentType);
OC_Response::enableCaching();
$last_modified = $this->getLastModified($files);
OC_Response::setLastModifiedHeader($last_modified);
$gzout = false;
$cache = new OC_Cache_FileGlobal();
if (!OC_Request::isNoCache() && (!defined('DEBUG') || !DEBUG)){
$gzout = $cache->get($cache_key.'.gz');
OC_Response::setETagHeader(md5($gzout));
}
if (!$gzout) {
$out = $this->minimizeFiles($files);
$gzout = gzencode($out);
$cache->set($cache_key.'.gz', $gzout);
}
if ($encoding = OC_Request::acceptGZip()) {
header('Content-Encoding: '.$encoding);
$out = $gzout;
} else {
$out = gzdecode($gzout);
}
header('Content-Length: '.strlen($out));
echo $out;
}
}
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