diff --git a/src/xml_grammar.cpp b/src/xml_grammar.cpp
new file mode 100644
index 0000000..ae48f70
--- /dev/null
+++ b/src/xml_grammar.cpp
@@ -0,0 +1,74 @@
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// xml_grammar.cpp:
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for updates, documentation, and revision history.
+
+#if (defined _MSC_VER) && (_MSC_VER == 1200)
+#  pragma warning (disable : 4786) // too long name, harmless warning
+#endif
+
+#include <boost/config.hpp>
+
+#define BOOST_ARCHIVE_SOURCE
+#include <boost/serialization/config.hpp>
+#include <boost/archive/impl/basic_xml_grammar.hpp>
+
+using namespace boost::spirit::classic;
+
+// fixup for borland
+// The following code will be put into Boost.Config in a later revision
+#if ! defined(__SGI_STL_PORT) \
+&& defined(BOOST_RWSTD_VER) && BOOST_RWSTD_VER<=0x020101
+#include <string>
+namespace std {
+    template<>
+    inline string & 
+    string::replace (
+        char * first1, 
+        char * last1,
+        const char * first2,
+        const char * last2
+    ){
+        replace(first1-begin(),last1-first1,first2,last2-first2,0,last2-first2);
+        return *this;
+    }
+} // namespace std
+#endif
+
+namespace boost {
+namespace archive {
+
+typedef basic_xml_grammar<char> xml_grammar;
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// specific definitions for char based XML
+
+template<>
+void xml_grammar::init_chset(){
+    Char = chset_t("\x9\xA\xD\x20-\x7f\x80\x81-\xFF"); 
+    Letter = chset_t("\x41-\x5A\x61-\x7A\xC0-\xD6\xD8-\xF6\xF8-\xFF");
+    Digit = chset_t("0-9");
+    Extender = chset_t('\xB7');
+    Sch = chset_t("\x20\x9\xD\xA");
+    NameChar = Letter | Digit | chset_p("._:-") | Extender ;
+}
+
+} // namespace archive
+} // namespace boost
+
+#include "basic_xml_grammar.ipp"
+
+namespace boost {
+namespace archive {
+
+// explicit instantiation of xml for 8 bit characters
+template class basic_xml_grammar<char>;
+
+} // namespace archive
+} // namespace boost
+