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   1  <?php
   2  /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   3  
   4  // +----------------------------------------------------------------------+
   5  // | Akelos Framework - http://www.akelos.org                             |
   6  // +----------------------------------------------------------------------+
   7  // | Copyright (c) 2002-2006, Akelos Media, S.L.  & Bermi Ferrer Martinez |
   8  // | Released under the GNU Lesser General Public License, see LICENSE.txt|
   9  // +----------------------------------------------------------------------+
  10  
  11  /**
  12   * @package ActiveSupport
  13   * @subpackage Converters
  14   * @author Bermi Ferrer <bermi a.t akelos c.om>
  15   * @copyright Copyright (c) 2002-2006, Akelos Media, S.L. http://www.akelos.org
  16   * @license GNU Lesser General Public License <http://www.gnu.org/copyleft/lesser.html>
  17   */
  18  class AkHtmlToRtf
  19  {
  20      var $font_face = 0;
  21      var $font_size = 24;
  22  
  23      // Convert special characters to ASCII
  24      function escapeCharacter($character)
  25      {
  26          $escaped = '';
  27          if(ord($character) >= 0x00 && ord($character) < 0x20){
  28              $escaped = "\\'".dechex(ord($character));
  29          }
  30  
  31          if ((ord($character) >= 0x20 && ord($character) < 0x80) || ord($character) == 0x09 || ord($character) == 0x0A){
  32              $escaped = $character;
  33          }
  34  
  35          if (ord($character) >= 0x80 and ord($character) < 0xFF){
  36              $escaped = "\\'".dechex(ord($character));
  37          }
  38  
  39          switch(ord($character)) {
  40              case 0x5C:
  41              case 0x7B:
  42              case 0x7D:
  43              $escaped = "\\".$character;
  44              break;
  45          }
  46  
  47          return $escaped;
  48      }
  49  
  50      function specialCharacters($text)
  51      {
  52          $text_buffer = '';
  53          for($i = 0; $i < strlen($text); $i++){
  54              $text_buffer .= $this->escapeCharacter($text[$i]);
  55          }
  56          return $text_buffer;
  57      }
  58  
  59      function convert()
  60      {
  61          $this->source = str_replace(
  62          array('<ul>','<UL>','<ol>','<OL>','</ul>','</UL>','</ol>','</OL>'),
  63          '',
  64          $this->source
  65          );
  66          $this->source = $this->specialCharacters($this->source);
  67          
  68          $rules = array(
  69          "/<LI>(.*?)<\/LI>/mi"=> "\\f3\\'B7\\tab\\f{$this->font_face} \\1\\par",
  70          "/<P>(.*?)<\/P>/mi" => "\\1\\par ",
  71          "/<STRONG>(.*?)<\/STRONG>/mi" => "\\b \\1\\b0 ",
  72          "/<B>(.*?)<\/B>/mi" => "\\b \\1\\b0 ",
  73          "/<EM>(.*?)<\/EM>/mi" => "\\i \\1\\i0 ",
  74          "/<U>(.*?)<\/U>/mi" => "\\ul \\1\\ul0 ",
  75          "/<STRIKE>(.*?)<\/STRIKE>/mi" => "\\strike \\1\\strike0 ",
  76          "/<SUB>(.*?)<\/SUB>/mi" => "{\\sub \\1}",
  77          "/<SUP>(.*?)<\/SUP>/mi" => "{\\super \\1}",
  78          "/<H1>(.*?)<\/H1>/mi" => "\\fs48\\b \\1\\b0\\fs{$this->font_size}\\par ",
  79          "/<H2>(.*?)<\/H2>/mi" => "\\fs36\\b \\1\\b0\\fs{$this->font_size}\\par ",
  80          "/<H3>(.*?)<\/H3>/mi" => "\\fs27\\b \\1\\b0\\fs{$this->font_size}\\par ",
  81          "/<HR(.*?)>/i" => "\\brdrb\\brdrs\\brdrw30\\brsp20 \\pard\\par ",
  82          "/<BR(.*?)>/i" => "\\par ",
  83          "/<TAB(.*?)>/i" => "\\tab ",
  84          "/\\n/" => "\\par "
  85          );
  86          
  87          return preg_replace(array_keys($rules),array_values($rules), $this->source);
  88  
  89      }
  90  
  91  }
  92  
  93  ?>