<?php /** * @author Gasper Kozak * @copyright 2007-2011 This file is part of WideImage. WideImage is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. WideImage 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with WideImage; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * @package Internals **/ /** * @package Exceptions */ class WideImage_UnknownImageOperationException extends WideImage_Exception {} /** * Operation factory * * @package Internals **/ class WideImage_OperationFactory { static protected $cache = array(); static function get($operationName) { $lcname = strtolower($operationName); if (!isset(self::$cache[$lcname])) { $opClassName = "WideImage_Operation_" . ucfirst($operationName); if (!class_exists($opClassName, false)) { $fileName = WideImage::path() . 'Operation/' . ucfirst($operationName) . '.php'; if (file_exists($fileName)) require_once $fileName; elseif (!class_exists($opClassName)) throw new WideImage_UnknownImageOperationException("Can't load '{$operationName}' operation."); } self::$cache[$lcname] = new $opClassName(); } return self::$cache[$lcname]; } }