nextcloud/lib/minimizer.php

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1.6 KiB
PHP
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<?php
abstract class OC_Minimizer {
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);
$gzout = false;
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$cache = OC_Cache::getGlobalCache();
if (!OC_Request::isNoCache() && (!defined('DEBUG') || !DEBUG)){
$gzout = $cache->get($cache_key.'.gz');
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if ($gzout) {
OC_Response::setETagHeader(md5($gzout));
}
}
if (!$gzout) {
$out = $this->minimizeFiles($files);
$gzout = gzencode($out);
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OC_Response::setETagHeader(md5($gzout));
$cache->set($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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public function clearCache() {
$cache = OC_Cache::getGlobalCache();
$cache->delete('core.css.gz');
$cache->delete('core.js.gz');
}
}
if (!function_exists('gzdecode')) {
function gzdecode($data,$maxlength=null,&$filename='',&$error='')
{
if (strcmp(substr($data,0,9),"\x1f\x8b\x8\0\0\0\0\0\0")) {
return null; // Not the GZIP format we expect (See RFC 1952)
}
return gzinflate(substr($data,10,-8));
}
}