crm.fsf.org/20131203/files/sites/all/modules-new/civicrm/packages/FPDI/filters/FilterASCIIHexDecode.php

   1 <?php
   2 //
   3 //  FPDI - Version 1.5
   4 //
   5 //    Copyright 2004-2014 Setasign - Jan Slabon
   6 //
   7 //  Licensed under the Apache License, Version 2.0 (the "License");
   8 //  you may not use this file except in compliance with the License.
   9 //  You may obtain a copy of the License at
  10 //
  11 //      http://www.apache.org/licenses/LICENSE-2.0
  12 //
  13 //  Unless required by applicable law or agreed to in writing, software
  14 //  distributed under the License is distributed on an "AS IS" BASIS,
  15 //  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 //  See the License for the specific language governing permissions and
  17 //  limitations under the License.
  18 //
  19
  20 /**
  21  * Class FilterASCIIHexDecode
  22  */
  23 class FilterASCIIHexDecode
  24 {
  25     /**
  26      * Converts an ASCII hexadecimal encoded string into it's binary representation.
  27      *
  28      * @param string $data The input string
  29      * @return string
  30      */
  31     public function decode($data)
  32     {
  33         $data = preg_replace('/[^0-9A-Fa-f]/', '', rtrim($data, '>'));
  34         if ((strlen($data) % 2) == 1) {
  35             $data .= '0';
  36         }
  37
  38         return pack('H*', $data);
  39     }
  40
  41     /**
  42      * Converts a string into ASCII hexadecimal representation.
  43      *
  44      * @param string $data The input string
  45      * @param boolean $leaveEOD
  46      * @return string
  47      */
  48     public function encode($data, $leaveEOD = false)
  49     {
  50         return current(unpack('H*', $data)) . ($leaveEOD ? '' : '>');
  51     }
  52 }