include/diogenes.compose.inc.php

   1 <?php
   2 /*
   3  * Copyright (C) 2003-2004 Polytechnique.org
   4  * http://opensource.polytechnique.org/
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21
  22 require_once 'diogenes/diogenes.misc.inc.php';
  23
  24 /** Protect PHP code.
  25  */
  26 function phpProtect($input)
  27 {
  28   $splits = preg_split("/(<\?php|\?>)/",$input,-1,PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
  29   $output = "";
  30
  31   while ($block = array_shift($splits)) {
  32     if ($block == "<?php") {
  33       $code = array_shift($splits);
  34       $end = array_shift($splits);
  35       if ($end != "?>")
  36         die("phpProtect : parse error");
  37       $output .= "{PHP:".base64_encode($code).":PHP}";
  38     } else {
  39       $output .= $block;
  40     }
  41   }
  42
  43   return $output;
  44 }
  45
  46
  47 /** Unprotect PHP code.
  48  */
  49 function phpUnprotect($input)
  50 {
  51   $splits = preg_split("/({PHP:.+:PHP})/",$input,-1,PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
  52   $output = "";
  53
  54   foreach ($splits as $block) {
  55     if (preg_match("/{PHP:(.+):PHP}/",$block,$match)) {
  56       $output .= "<?php".base64_decode($match[1])."?>";
  57     } else {
  58       $output .= $block;
  59     }
  60   }
  61
  62   return $output;
  63 }
  64
  65
  66 /** Convert XHTML-compliant tags to plain HTML.
  67  */
  68 function xhtmlToHtml($input)
  69 {
  70   return html_accent(preg_replace("/<(br|img|input|p)( [^\/]*)?\/>/","<\$1\$2>",$input));
  71 }
  72
  73
  74 /** Restore XHTML-compliant tags.
  75  */
  76 function htmlToXhtml($input)
  77 {
  78   return preg_replace("/<(br|img|input)( [^>]+)?>/","<\$1\$2/>",$input);
  79 }
  80
  81 ?>