diff --git a/extensions/transformiix/source/base/txTokenizer.h b/extensions/transformiix/source/base/txTokenizer.h
new file mode 100644
index 000000000000..5dabeeae66b5
--- /dev/null
+++ b/extensions/transformiix/source/base/txTokenizer.h
@@ -0,0 +1,91 @@
+/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 2002
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Peter Van der Beken <peterv@netscape.com> (original author)
+ *
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef txTokenizer_h___
+#define txTokenizer_h___
+
+#include "nsDependentSubstring.h"
+#include "XMLUtils.h"
+
+class txTokenizer
+{
+public:
+    /**
+     * Creates a new txTokenizer using the given source string.
+     */
+    txTokenizer(const nsAFlatString& aSource)
+    {
+        aSource.BeginReading(mIter);
+        aSource.EndReading(mEnd);
+
+        while (mIter != mEnd && XMLUtils::isWhitespace(*mIter)) {
+            ++mIter;
+        }
+    }
+
+    /**
+     * Checks if any more tokens are available.
+     */
+    PRBool hasMoreTokens()
+    {
+        return (mIter != mEnd);
+    }
+
+    /**
+     * Returns the next token.
+     */
+    const nsDependentSingleFragmentSubstring nextToken()
+    {
+        nsAFlatString::const_char_iterator begin = mIter;
+        while (mIter != mEnd && !XMLUtils::isWhitespace(*mIter)) {
+            ++mIter;
+        }
+        nsAFlatString::const_char_iterator end = mIter;
+        while (mIter != mEnd && XMLUtils::isWhitespace(*mIter)) {
+            ++mIter;
+        }
+        return Substring(begin, end);
+    }
+
+private:
+    nsAFlatString::const_char_iterator mIter, mEnd;
+};
+
+#endif /* txTokenizer_h___ */
+