application/vendor/swiftmailer/classes/Swift/Mime/HeaderEncoder/QpHeaderEncoder.php

   1 <?php
   2
   3 /*
   4  * This file is part of SwiftMailer.
   5  * (c) 2004-2009 Chris Corbyn
   6  *
   7  * For the full copyright and license information, please view the LICENSE
   8  * file that was distributed with this source code.
   9  */
  10
  11 require_once dirname(__FILE__) . '/../HeaderEncoder.php';
  12 require_once dirname(__FILE__) . '/../../Encoder/QpEncoder.php';
  13 require_once dirname(__FILE__) . '/../../CharacterStream.php';
  14
  15 /**
  16  * Handles Quoted Printable (Q) Header Encoding in Swift Mailer.
  17  * @package Swift
  18  * @subpackage Mime
  19  * @author Chris Corbyn
  20  */
  21 class Swift_Mime_HeaderEncoder_QpHeaderEncoder extends Swift_Encoder_QpEncoder
  22   implements Swift_Mime_HeaderEncoder
  23 {
  24
  25   private static $_headerSafeMap = array();
  26
  27   /**
  28    * Creates a new QpHeaderEncoder for the given CharacterStream.
  29    * @param Swift_CharacterStream $charStream to use for reading characters
  30    */
  31   public function __construct(Swift_CharacterStream $charStream)
  32   {
  33     parent::__construct($charStream);
  34     if (empty(self::$_headerSafeMap))
  35     {
  36       foreach (array_merge(
  37         range(0x61, 0x7A), range(0x41, 0x5A),
  38         range(0x30, 0x39), array(0x20, 0x21, 0x2A, 0x2B, 0x2D, 0x2F)
  39         ) as $byte)
  40       {
  41         self::$_headerSafeMap[$byte] = chr($byte);
  42       }
  43     }
  44   }
  45
  46   /**
  47    * Get the name of this encoding scheme.
  48    * Returns the string 'Q'.
  49    * @return string
  50    */
  51   public function getName()
  52   {
  53     return 'Q';
  54   }
  55
  56   /**
  57    * Takes an unencoded string and produces a Q encoded string from it.
  58    * @param string $string to encode
  59    * @param int $firstLineOffset, optional
  60    * @param int $maxLineLength, optional, 0 indicates the default of 76 chars
  61    * @return string
  62    */
  63   public function encodeString($string, $firstLineOffset = 0,
  64     $maxLineLength = 0)
  65   {
  66     return str_replace(array(' ', '=20', "=\r\n"), array('_', '_', "\r\n"),
  67       parent::encodeString($string, $firstLineOffset, $maxLineLength)
  68       );
  69   }
  70
  71   // -- Overridden points of extension
  72
  73   /**
  74    * Encode the given byte array into a verbatim QP form.
  75    * @param int[] $bytes
  76    * @return string
  77    * @access protected
  78    */
  79   protected function _encodeByteSequence(array $bytes, &$size)
  80   {
  81     $ret = '';
  82     $size=0;
  83     foreach ($bytes as $b)
  84     {
  85       if (isset(self::$_headerSafeMap[$b]))
  86       {
  87         $ret .= self::$_headerSafeMap[$b];
  88         ++$size;
  89       }
  90       else
  91       {
  92         $ret .= self::$_qpMap[$b];
  93         $size+=3;
  94       }
  95     }
  96     return $ret;
  97   }
  98
  99 }