StringReplacementFilterFactory.php

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<?php

/*
 * This file is part of SwiftMailer.
 * (c) 2004-2009 Chris Corbyn
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

class Swift_StreamFilters_StringReplacementFilterFactory implements Swift_ReplacementFilterFactory
{
    private $_filters = array();

    public function createFilter($search, $replace)
    {
        if (!isset($this->_filters[$search][$replace])) {
            if (!isset($this->_filters[$search])) {
                $this->_filters[$search] = array();
            }

            if (!isset($this->_filters[$search][$replace])) {
                $this->_filters[$search][$replace] = array();
            }

            $this->_filters[$search][$replace] = new Swift_StreamFilters_StringReplacementFilter($search, $replace);
        }

        return $this->_filters[$search][$replace];
    }
}