StringReplacementFilter.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.
 */

//@require 'Swift/StreamFilter.php';

class Swift_StreamFilters_StringReplacementFilter implements Swift_StreamFilter
{
  
  private $_search;
  
  private $_replace;
  
  public function __construct($search, $replace)
  {
    $this->_search = $search;
    $this->_replace = $replace;
  }
  
  public function shouldBuffer($buffer)
  {
    $endOfBuffer = substr($buffer, -1);
    foreach ((array) $this->_search as $needle)
    {
      if (false !== strpos($needle, $endOfBuffer))
      {
        return true;
      }
    }
    return false;
  }
  
  public function filter($buffer)
  {
    return str_replace($this->_search, $this->_replace, $buffer);
  }
  
}