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/mp-includes/composer/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/HeaderEncoder/ -> Base64HeaderEncoder.php (source)

   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  /**
  12   * Handles Base64 (B) Header Encoding in Swift Mailer.
  13   *
  14   * @author Chris Corbyn
  15   */
  16  class Swift_Mime_HeaderEncoder_Base64HeaderEncoder extends Swift_Encoder_Base64Encoder implements Swift_Mime_HeaderEncoder
  17  {
  18      /**
  19       * Get the name of this encoding scheme.
  20       * Returns the string 'B'.
  21       *
  22       * @return string
  23       */
  24      public function getName()
  25      {
  26          return 'B';
  27      }
  28  
  29      /**
  30       * Takes an unencoded string and produces a Base64 encoded string from it.
  31       *
  32       * If the charset is iso-2022-jp, it uses mb_encode_mimeheader instead of
  33       * default encodeString, otherwise pass to the parent method.
  34       *
  35       * @param string $string          string to encode
  36       * @param int    $firstLineOffset
  37       * @param int    $maxLineLength   optional, 0 indicates the default of 76 bytes
  38       * @param string $charset
  39       *
  40       * @return string
  41       */
  42      public function encodeString($string, $firstLineOffset = 0, $maxLineLength = 0, $charset = 'utf-8')
  43      {
  44          if ('iso-2022-jp' === strtolower($charset)) {
  45              $old = mb_internal_encoding();
  46              mb_internal_encoding('utf-8');
  47              $newstring = mb_encode_mimeheader($string, $charset, $this->getName(), "\r\n");
  48              mb_internal_encoding($old);
  49  
  50              return $newstring;
  51          }
  52  
  53          return parent::encodeString($string, $firstLineOffset, $maxLineLength);
  54      }
  55  }


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