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<?php
/**
* @copyright 2017, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\Template;
use OC\SystemConfig;
use OCP\ICache;
use OCP\Files\IAppData;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\Files\SimpleFS\ISimpleFolder;
use OCP\ICacheFactory;
use OCP\ILogger;
use OCP\IURLGenerator;
class JSCombiner {
/** @var IAppData */
protected $appData;
/** @var IURLGenerator */
protected $urlGenerator;
/** @var ICache */
protected $depsCache;
/** @var SystemConfig */
protected $config;
/** @var ILogger */
protected $logger;
/** @var ICacheFactory */
private $cacheFactory;
/**
* @param IAppData $appData
* @param IURLGenerator $urlGenerator
* @param ICacheFactory $cacheFactory
* @param SystemConfig $config
* @param ILogger $logger
*/
public function __construct(IAppData $appData,
IURLGenerator $urlGenerator,
ICacheFactory $cacheFactory,
SystemConfig $config,
ILogger $logger) {
$this->appData = $appData;
$this->urlGenerator = $urlGenerator;
$this->cacheFactory = $cacheFactory;
$this->depsCache = $this->cacheFactory->createDistributed('JS-' . md5($this->urlGenerator->getBaseUrl()));
$this->config = $config;
$this->logger = $logger;
}
/**
* @param string $root
* @param string $file
* @param string $app
* @return bool
*/
public function process($root, $file, $app) {
if ($this->config->getValue('debug') || !$this->config->getValue('installed')) {
return false;
}
$path = explode('/', $root . '/' . $file);
$fileName = array_pop($path);
$path = implode('/', $path);
try {
$folder = $this->appData->getFolder($app);
} catch(NotFoundException $e) {
// creating css appdata folder
$folder = $this->appData->newFolder($app);
}
if($this->isCached($fileName, $folder)) {
return true;
}
return $this->cache($path, $fileName, $folder);
}
/**
* @param string $fileName
* @param ISimpleFolder $folder
* @return bool
*/
protected function isCached($fileName, ISimpleFolder $folder) {
$fileName = str_replace('.json', '.js', $fileName);
if (!$folder->fileExists($fileName)) {
return false;
}
$fileName = $fileName . '.deps';
try {
$deps = $this->depsCache->get($folder->getName() . '-' . $fileName);
if ($deps === null || $deps === '') {
$depFile = $folder->getFile($fileName);
$deps = $depFile->getContent();
}
// check again
if ($deps === null || $deps === '') {
$this->logger->info('JSCombiner: deps file empty: ' . $fileName);
return false;
}
$deps = json_decode($deps, true);
if ($deps === NULL) {
return false;
}
foreach ($deps as $file=>$mtime) {
if (!file_exists($file) || filemtime($file) > $mtime) {
return false;
}
}
return true;
} catch(NotFoundException $e) {
return false;
}
}
/**
* @param string $path
* @param string $fileName
* @param ISimpleFolder $folder
* @return bool
*/
protected function cache($path, $fileName, ISimpleFolder $folder) {
$deps = [];
$fullPath = $path . '/' . $fileName;
$data = json_decode(file_get_contents($fullPath));
$deps[$fullPath] = filemtime($fullPath);
$res = '';
foreach ($data as $file) {
$filePath = $path . '/' . $file;
if (is_file($filePath)) {
$res .= file_get_contents($filePath);
$res .= PHP_EOL . PHP_EOL;
$deps[$filePath] = filemtime($filePath);
}
}
$fileName = str_replace('.json', '.js', $fileName);
try {
$cachedfile = $folder->getFile($fileName);
} catch(NotFoundException $e) {
$cachedfile = $folder->newFile($fileName);
}
$depFileName = $fileName . '.deps';
try {
$depFile = $folder->getFile($depFileName);
} catch (NotFoundException $e) {
$depFile = $folder->newFile($depFileName);
}
try {
$gzipFile = $folder->getFile($fileName . '.gzip'); # Safari doesn't like .gz
} catch (NotFoundException $e) {
$gzipFile = $folder->newFile($fileName . '.gzip'); # Safari doesn't like .gz
}
try {
$cachedfile->putContent($res);
$deps = json_encode($deps);
$depFile->putContent($deps);
$this->depsCache->set($folder->getName() . '-' . $depFileName, $deps);
$gzipFile->putContent(gzencode($res, 9));
$this->logger->debug('JSCombiner: successfully cached: ' . $fileName);
return true;
} catch (NotPermittedException $e) {
$this->logger->error('JSCombiner: unable to cache: ' . $fileName);
return false;
}
}
/**
* @param string $appName
* @param string $fileName
* @return string
*/
public function getCachedJS($appName, $fileName) {
$tmpfileLoc = explode('/', $fileName);
$fileName = array_pop($tmpfileLoc);
$fileName = str_replace('.json', '.js', $fileName);
return substr($this->urlGenerator->linkToRoute('core.Js.getJs', array('fileName' => $fileName, 'appName' => $appName)), strlen(\OC::$WEBROOT) + 1);
}
/**
* @param string $root
* @param string $file
* @return string[]
*/
public function getContent($root, $file) {
/** @var array $data */
$data = json_decode(file_get_contents($root . '/' . $file));
if(!is_array($data)) {
return [];
}
$path = explode('/', $file);
array_pop($path);
$path = implode('/', $path);
$result = [];
foreach ($data as $f) {
$result[] = $path . '/' . $f;
}
return $result;
}
/**
* Clear cache with combined javascript files
*
* @throws NotFoundException
*/
public function resetCache() {
$this->cacheFactory->createDistributed('JS-')->clear();
$appDirectory = $this->appData->getDirectoryListing();
foreach ($appDirectory as $folder) {
foreach ($folder->getDirectoryListing() as $file) {
$file->delete();
}
}
}
}