include/Text/Wiki/Render/Latex.php

   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 ?>