<?php
  /**
   * @author Jörn Friedrich Dreyer
   * @copyright (c) 2014 Jörn Friedrich Dreyer <jfd@owncloud.com>
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
   * License as published by the Free Software Foundation; either
   * version 3 of the License, or any later version.
   *
   * This library 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 library.  If not, see <http://www.gnu.org/licenses/>.
   *
   */
  
  namespace OC\Files\ObjectStore;
  use \OC\Files\Cache\Scanner;
  use \OC\Files\Storage\Storage;
  
  class NoopScanner extends Scanner {
  
  	public function __construct(Storage $storage) {
  		//we don't need the storage, so do nothing here
  	}
  
  	/**
  	 * scan a single file and store it in the cache
  	 *
  	 * @param string $file
  	 * @param int $reuseExisting
  	 * @param bool $parentExistsInCache
  	 * @return array with metadata of the scanned file
  	 */
  	public function scanFile($file, $reuseExisting = 0, $parentExistsInCache = false) {
  		return array();
  	}
  
  	/**
  	 * scan a folder and all it's children
  	 *
  	 * @param string $path
  	 * @param bool $recursive
  	 * @param int $reuse
  	 * @return array with the meta data of the scanned file or folder
  	 */
  	public function scan($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1) {
  		return array();
  	}
  
  	/**
  	 * scan all the files and folders in a folder
  	 *
  	 * @param string $path
  	 * @param bool $recursive
  	 * @param int $reuse
  	 * @return int the size of the scanned folder or -1 if the size is unknown at this stage
  	 */
  	public function scanChildren($path, $recursive = Storage::SCAN_RECURSIVE, $reuse = -1) {
  		$size = 0;
  		return $size;
  	}
  
  	/**
  	 * walk over any folders that are not fully scanned yet and scan them
  	 */
  	public function backgroundScan() {
  		//noop
  	}
  }