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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.
*/
/**
* Processes bytes as they pass through a stream and performs filtering.
*
* @author Chris Corbyn
*/
interface Swift_StreamFilter
{
/**
* Based on the buffer given, this returns true if more buffering is needed.
*
* @param mixed $buffer
*
* @return bool
*/
public function shouldBuffer($buffer);
/**
* Filters $buffer and returns the changes.
*
* @param mixed $buffer
*
* @return mixed
*/
public function filter($buffer);
}
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