Base64Encoder.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/Encoder.php';

class Swift_Encoder_Base64Encoder implements Swift_Encoder
{
  
  public function encodeString($string, $firstLineOffset = 0,
    $maxLineLength = 0)
  {
    if (0 >= $maxLineLength || 76 < $maxLineLength)
    {
      $maxLineLength = 76;
    }
    
    $encodedString = base64_encode($string);
    $firstLine = '';
    
    if (0 != $firstLineOffset)
    {
      $firstLine = substr(
        $encodedString, 0, $maxLineLength - $firstLineOffset
        ) . "\r\n";
      $encodedString = substr(
        $encodedString, $maxLineLength - $firstLineOffset
        );
    }
    
    return $firstLine . trim(chunk_split($encodedString, $maxLineLength, "\r\n"));
  }
  
  public function charsetChanged($charset)
  {
  }
  
}