include/encoding.inc.php

   1 <?php
   2 /********************************************************************************
   3 * include/encoding.inc.php : decoding subroutines
   4 * --------------------------
   5 *
   6 * This file is part of the banana distribution
   7 * Copyright: See COPYING files that comes with this distribution
   8 ********************************************************************************/
   9
  10 /** Decodes quoted-printable and UTF8 headers
  11  * @param STRING $_value string to decode
  12  */
  13
  14 function headerDecode($_value) {
  15     if (eregi('=\?.*\?.\?.*\?=',$_value)) { // is there anything encoded ?
  16         if (eregi('=\?(.*)\?Q\?.*\?=',$_value,$charset)) {  // quoted-printable decoding
  17             $result1 = eregi_replace('(.*)=\?.*\?Q\?(.*)\?=(.*)','\1',$_value);
  18             $result2 = eregi_replace('(.*)=\?.*\?Q\?(.*)\?=(.*)','\2',$_value);
  19             $result3 = eregi_replace('(.*)=\?.*\?Q\?(.*)\?=(.*)','\3',$_value);
  20             $result2 = str_replace("_"," ",quoted_printable_decode($result2));
  21             if ($charset[1] == "UTF-8") {
  22                 $result2 = utf8_decode($result2);
  23             }
  24             $newvalue = $result1.$result2.$result3;
  25         }
  26         if (eregi('=\?(.*)\?B\?.*\?=',$_value,$charset)) {  // base64 decoding
  27             $result1 = eregi_replace('(.*)=\?.*\?B\?(.*)\?=(.*)','\1',$_value);
  28             $result2 = eregi_replace('(.*)=\?.*\?B\?(.*)\?=(.*)','\2',$_value);
  29             $result3 = eregi_replace('(.*)=\?.*\?B\?(.*)\?=(.*)','\3',$_value);
  30             $result2 = base64_decode($result2);
  31             if ($charset[1] == "UTF-8") {
  32                 $result2 = utf8_decode($result2);
  33             }
  34             $newvalue = $result1.$result2.$result3;
  35         }
  36         if (!isset($newvalue)) { // nothing of the above, must be an unknown encoding...
  37             $newvalue = $_value;
  38         } else {
  39             $newvalue=headerDecode($newvalue);  // maybe there are more encoded
  40         }
  41         return($newvalue);                    // parts
  42     } else {   // there wasn't anything encoded, return the original string
  43         return($_value);
  44     }
  45 }
  46 ?>