[Sommaire] [Imprimer]

   1  <?php
   2  
   3  /**
   4  * 
   5  * Formats parsed Text_Wiki for LaTeX rendering.
   6  * 
   7  * $Id: Latex.php,v 1.2 2004/09/25 19:05:13 pmjones Exp $
   8  * 
   9  * @author Jeremy Cowgar <jeremy@cowgar.com>
  10  * 
  11  * @package Text_Wiki
  12  * 
  13  * @todo [http://google.com] becomes 1 with a LaTeX footnote in subscript.
  14  *       This should be a normal LaTeX footnote associated with the
  15  *       previous word?
  16  * 
  17  * @todo parse "..." to be ``...''
  18  * 
  19  * @todo parse '...' to be `...'
  20  * 
  21  * @todo move escape_latex to a static function, move escaping to the
  22  *       individual .php files they are associated with
  23  * 
  24  * @todo allow the user to add conf items to do things like
  25  *       + A custom document header
  26  *       + Custom page headings
  27  *       + Include packages
  28  *       + Set Title, Author, Date
  29  *       + Include a title page
  30  *       + Not output Document Head/Foot (maybe combinding many pages?)
  31  * 
  32  */
  33  
  34  class Text_Wiki_Render_Latex extends Text_Wiki_Render {
  35      function escape_latex ($txt) {
  36          $txt = str_replace("\\", "\\\\", $txt);
  37          $txt = str_replace('#', '\#', $txt);
  38          $txt = str_replace('$', '\$', $txt);
  39          $txt = str_replace('%', '\%', $txt);
  40          $txt = str_replace('^', '\^', $txt);
  41          $txt = str_replace('&', '\&', $txt);
  42          $txt = str_replace('_', '\_', $txt);
  43          $txt = str_replace('{', '\{', $txt);
  44          $txt = str_replace('}', '\}', $txt);
  45          
  46          // Typeset things a bit prettier than normas
  47          $txt = str_replace('~',   '$\sim$', $txt);
  48          $txt = str_replace('...', '\ldots', $txt);
  49  
  50          return $txt;
  51      }
  52  
  53      function escape($tok, $ele) {
  54          if (isset($tok[$ele])) {
  55              $tok[$ele] = $this->escape_latex($tok[$ele]);
  56          }
  57  
  58          return $tok;
  59      }
  60      
  61      function pre()
  62      {
  63          foreach ($this->wiki->tokens as $k => $tok) {
  64              if ($tok[0] == 'Code') {
  65                  continue;
  66              }
  67  
  68              $tok[1] = $this->escape($tok[1], 'text');
  69              $tok[1] = $this->escape($tok[1], 'page');
  70              $tok[1] = $this->escape($tok[1], 'href');
  71              
  72              $this->wiki->tokens[$k] = $tok;
  73          }
  74  
  75          $this->wiki->source = $this->escape_latex($this->wiki->source);
  76  
  77          return
  78              "\\documentclass{article}\n".
  79              "\\usepackage{ulem}\n".
  80              "\\pagestyle{headings}\n".
  81              "\\begin{document}\n";
  82      }
  83      
  84      function post()
  85      {
  86          return "\\end{document}\n";
  87      }
  88      
  89  }
  90  ?>