server/apps/files/lib/app.php

<?php
/**
 * @author Björn Schießle <schiessle@owncloud.com>
 * @author Christopher Schäpers <kondou@ts.unde.re>
 * @author Jörn Friedrich Dreyer <jfd@butonic.de>
 * @author Morris Jobke <hey@morrisjobke.de>
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 * @author Vincent Petry <pvince81@owncloud.com>
 *
 * @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 OCA\Files;

class App {
	/**
	 * @var \OC_L10N
	 */
	private $l10n;

	/**
	 * @var \OCP\INavigationManager
	 */
	private static $navigationManager;

	/**
	 * @var \OC\Files\View
	 */
	private $view;

	public function __construct($view, $l10n) {
		$this->view = $view;
		$this->l10n = $l10n;
	}

	/**
	 * Returns the app's navigation manager
	 *
	 * @return \OCP\INavigationManager
	 */
	public static function getNavigationManager() {
		if (self::$navigationManager === null) {
			self::$navigationManager = new \OC\NavigationManager();
		}
		return self::$navigationManager;
	}

	/**
	 * rename a file
	 *
	 * @param string $dir
	 * @param string $oldname
	 * @param string $newname
	 * @return array
	 */
	public function rename($dir, $oldname, $newname) {
		$result = array(
			'success' 	=> false,
			'data'		=> NULL
		);

		try {
			// check if the new name is conform to file name restrictions
			$this->view->verifyPath($dir, $newname);
		} catch (\OCP\Files\InvalidPathException $ex) {
			$result['data'] = array(
				'message'	=> $this->l10n->t($ex->getMessage()),
				'code' => 'invalidname',
			);
			return $result;
		}

		$normalizedOldPath = \OC\Files\Filesystem::normalizePath($dir . '/' . $oldname);
		$normalizedNewPath = \OC\Files\Filesystem::normalizePath($dir . '/' . $newname);

		// rename to non-existing folder is denied
		if (!$this->view->file_exists($normalizedOldPath)) {
			$result['data'] = array(
				'message'	=> $this->l10n->t('%s could not be renamed as it has been deleted', array($oldname)),
				'code' => 'sourcenotfound',
				'oldname' => $oldname,
				'newname' => $newname,
			);
		}else if (!$this->view->file_exists($dir)) {
			$result['data'] = array('message' => (string)$this->l10n->t(
					'The target folder has been moved or deleted.',
					array($dir)),
					'code' => 'targetnotfound'
				);
		// rename to existing file is denied
		} else if ($this->view->file_exists($normalizedNewPath)) {

			$result['data'] = array(
				'message'	=> $this->l10n->t(
						"The name %s is already used in the folder %s. Please choose a different name.",
						array($newname, $dir))
			);
		} else if (
			// rename to "." is denied
			$newname !== '.' and
			// THEN try to rename
			$this->view->rename($normalizedOldPath, $normalizedNewPath)
		) {
			// successful rename
			$meta = $this->view->getFileInfo($normalizedNewPath);
			$meta = \OCA\Files\Helper::populateTags(array($meta));
			$fileInfo = \OCA\Files\Helper::formatFileInfo(current($meta));
			$fileInfo['path'] = dirname($normalizedNewPath);
			$result['success'] = true;
			$result['data'] = $fileInfo;
		} else {
			// rename failed
			$result['data'] = array(
				'message'	=> $this->l10n->t('%s could not be renamed', array($oldname))
			);
		}
		return $result;
	}

}