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<?php
/**
* @author Lukas Reschke <lukas@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
*
* @copyright Copyright (c) 2015, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Files\Storage;
/**
* Storage backend class for providing common filesystem operation methods
* which are not storage-backend specific.
*
* \OC\Files\Storage\Common is never used directly; it is extended by all other
* storage backends, where its methods may be overridden, and additional
* (backend-specific) methods are defined.
*
* Some \OC\Files\Storage\Common methods call functions which are first defined
* in classes which extend it, e.g. $this->stat() .
*/
trait LocalTempFileTrait {
/** @var string[] */
protected $cachedFiles = [];
/**
* @param string $path
* @return string
*/
protected function getCachedFile($path) {
if (!isset($this->cachedFiles[$path])) {
$this->cachedFiles[$path] = $this->toTmpFile($path);
}
return $this->cachedFiles[$path];
}
/**
* @param string $path
*/
protected function removeCachedFile($path) {
unset($this->cachedFiles[$path]);
}
/**
* @param string $path
* @return string
*/
protected function toTmpFile($path) { //no longer in the storage api, still useful here
$source = $this->fopen($path, 'r');
if (!$source) {
return false;
}
if ($pos = strrpos($path, '.')) {
$extension = substr($path, $pos);
} else {
$extension = '';
}
$tmpFile = \OC_Helper::tmpFile($extension);
$target = fopen($tmpFile, 'w');
\OC_Helper::streamCopy($source, $target);
fclose($target);
return $tmpFile;
}
}
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