58 lines
1.7 KiB
PHP
58 lines
1.7 KiB
PHP
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<?php
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/**
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* @author Gasper Kozak
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* @copyright 2007-2011
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This file is part of WideImage.
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WideImage is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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WideImage is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with WideImage; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* @package Internals
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**/
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/**
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* @package Exceptions
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*/
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class WideImage_UnknownImageOperationException extends WideImage_Exception {}
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/**
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* Operation factory
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*
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* @package Internals
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**/
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class WideImage_OperationFactory
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{
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static protected $cache = array();
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static function get($operationName)
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{
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$lcname = strtolower($operationName);
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if (!isset(self::$cache[$lcname]))
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{
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$opClassName = "WideImage_Operation_" . ucfirst($operationName);
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if (!class_exists($opClassName, false))
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{
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$fileName = WideImage::path() . 'Operation/' . ucfirst($operationName) . '.php';
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if (file_exists($fileName))
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require_once $fileName;
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elseif (!class_exists($opClassName))
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throw new WideImage_UnknownImageOperationException("Can't load '{$operationName}' operation.");
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}
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self::$cache[$lcname] = new $opClassName();
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}
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return self::$cache[$lcname];
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}
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}
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