X-Git-Url: http://git.polytechnique.org/?a=blobdiff_plain;f=include%2Fdiogenes.text.inc.php;fp=include%2Fdiogenes.text.inc.php;h=76ef7d96e835eebf8eca875973d23e026efb5788;hb=d950012fd97be05390aa91c7671b7e7f73293880;hp=0000000000000000000000000000000000000000;hpb=8d31b5f1a0404e279c644c26d3e75e2f5f35cf99;p=diogenes.git

diff --git a/include/diogenes.text.inc.php b/include/diogenes.text.inc.php
new file mode 100644
index 0000000..76ef7d9
--- /dev/null
+++ b/include/diogenes.text.inc.php
@@ -0,0 +1,127 @@
+<?php
+/*
+ * Copyright (C) 2003-2006 Polytechnique.org
+ * http://opensource.polytechnique.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+require_once 'diogenes/diogenes.misc.inc.php';
+
+/** Protect a text block and encode it as base64.
+ */
+function textProtectTag($tag_open, $tag_close, $prot_open, $prot_close, $input)
+{
+  $splits = preg_split("/($tag_open|$tag_close)/",$input,-1,PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
+  
+  $output = "";
+  $depth = 0;
+  while ($block = array_shift($splits)) {
+    if (preg_match("/^$tag_open$/", $block)) {
+      if ($depth == 0) {
+        $save = "";
+      }
+      $save .= $block;
+      $depth++;
+    } else if ($depth > 0) {
+      $save .= $block;
+      if (preg_match("/^$tag_close$/", $block))
+      {
+        $depth--;
+        if ($depth == 0)
+        {
+           $output .= $prot_open.base64_encode($save).$prot_close;
+           $save = "";
+        }
+      }
+    } else {
+      $output .= $block;
+    }
+  }
+
+  return $output;
+}
+
+
+/** Unprotect base64 blocks.
+ */
+function textUnprotectTags($prot_open, $prot_close, $input)
+{
+  $splits = preg_split("/($prot_open.+$prot_close)/",$input,-1,PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
+  $output = "";
+
+  foreach ($splits as $block) {
+    if (preg_match("/^$prot_open(.+)$prot_close$/", $block, $match)) {
+      $output .= base64_decode($match[1]);
+    } else {
+      $output .= $block;
+    }
+  }
+
+  return $output;
+}
+
+
+/** Protect HTML code from Textism.
+ */
+function htmlProtectFromTextism($input)
+{
+  return textProtectTag("<protect>", "<\/protect>", "{NOP:", ":NOP}", $input);
+}
+
+
+/** Restore HTML code that was protected from Textism.
+ */
+function htmlUnprotectFromTextism($input)
+{
+  $input = textUnprotectTags("<p>\s*{NOP:", ":NOP}\s*<\/p>", $input);
+  $input = textUnprotectTags("{NOP:", ":NOP}", $input);
+  return preg_replace('/<\/?protect>/', "", $input);
+}
+
+
+/** Protect PHP code.
+ */
+function phpProtect($input)
+{
+  return textProtectTag("<\?php", "\?>", "{PHP:", ":PHP}", $input);
+}
+
+
+/** Unprotect PHP code.
+ */
+function phpUnprotect($input)
+{
+  return textUnprotectTags("{PHP:", ":PHP}", $input);
+}
+
+
+/** Convert XHTML-compliant tags to plain HTML.
+ */
+function xhtmlToHtml($input)
+{
+  return html_accent(preg_replace("/<(br|img|input|p)( [^\/]*)?\/>/","<\$1\$2>",$input));
+}
+
+
+/** Restore XHTML-compliant tags.
+ */
+function htmlToXhtml($input)
+{
+  return preg_replace("/<(br|img|input)( [^>]+)?>/","<\$1\$2/>",$input);
+}
+
+
+?>