application/vendor/swiftmailer/classes/Swift/Mime/ContentEncoder/QpContentEncoder.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 'Swift/Mime/ContentEncoder.php';
  12 //@require 'Swift/Encoder/QpEncoder.php';
  13 //@require 'Swift/InputByteStrean.php';
  14 //@require 'Swift/OutputByteStream.php';
  15 //@require 'Swift/CharacterStream.php';
  16
  17 /**
  18  * Handles Quoted Printable (QP) Transfer Encoding in Swift Mailer.
  19  * @package Swift
  20  * @subpackage Mime
  21  * @author Chris Corbyn
  22  */
  23 class Swift_Mime_ContentEncoder_QpContentEncoder extends Swift_Encoder_QpEncoder
  24   implements Swift_Mime_ContentEncoder
  25 {
  26
  27   /**
  28    * Creates a new QpContentEncoder for the given CharacterStream.
  29    * @param Swift_CharacterStream $charStream to use for reading characters
  30    * @param Swift_StreamFilter $filter if canonicalization should occur
  31    */
  32   public function __construct(Swift_CharacterStream $charStream,
  33     Swift_StreamFilter $filter = null)
  34   {
  35     parent::__construct($charStream, $filter);
  36   }
  37
  38   /**
  39    * Encode stream $in to stream $out.
  40    * QP encoded strings have a maximum line length of 76 characters.
  41    * If the first line needs to be shorter, indicate the difference with
  42    * $firstLineOffset.
  43    * @param Swift_OutputByteStream $os output stream
  44    * @param Swift_InputByteStream $is input stream
  45    * @param int $firstLineOffset
  46    * @param int $maxLineLength
  47    */
  48   public function encodeByteStream(
  49     Swift_OutputByteStream $os, Swift_InputByteStream $is, $firstLineOffset = 0,
  50     $maxLineLength = 0)
  51   {
  52     if ($maxLineLength > 76 || $maxLineLength <= 0)
  53     {
  54       $maxLineLength = 76;
  55     }
  56
  57     $thisLineLength = $maxLineLength - $firstLineOffset;
  58
  59     $this->_charStream->flushContents();
  60     $this->_charStream->importByteStream($os);
  61
  62     $currentLine = '';
  63     $prepend = '';
  64     $size=$lineLen=0;
  65
  66     while (false !== $bytes = $this->_nextSequence())
  67     {
  68       //If we're filtering the input
  69       if (isset($this->_filter))
  70       {
  71         //If we can't filter because we need more bytes
  72         while ($this->_filter->shouldBuffer($bytes))
  73         {
  74           //Then collect bytes into the buffer
  75           if (false === $moreBytes = $this->_nextSequence(1))
  76           {
  77             break;
  78           }
  79
  80           foreach ($moreBytes as $b)
  81           {
  82             $bytes[] = $b;
  83           }
  84         }
  85         //And filter them
  86         $bytes = $this->_filter->filter($bytes);
  87       }
  88
  89       $enc = $this->_encodeByteSequence($bytes, $size);
  90       if ($currentLine && $lineLen+$size >= $thisLineLength)
  91       {
  92         $is->write($prepend . $this->_standardize($currentLine));
  93         $currentLine = '';
  94         $prepend = "=\r\n";
  95         $thisLineLength = $maxLineLength;
  96         $lineLen=0;
  97       }
  98       $lineLen+=$size;
  99       $currentLine .= $enc;
 100     }
 101     if (strlen($currentLine))
 102     {
 103       $is->write($prepend . $this->_standardize($currentLine));
 104     }
 105   }
 106
 107   /**
 108    * Get the name of this encoding scheme.
 109    * Returns the string 'quoted-printable'.
 110    * @return string
 111    */
 112   public function getName()
 113   {
 114     return 'quoted-printable';
 115   }
 116
 117 }