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+//  (C) Copyright Gennadiy Rozental 2001.
+//  Distributed under 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/libs/test for the library home page.
+//
+//  File        : $RCSfile$
+//
+//  Version     : $Revision$
+//
+//  Description : generic char traits class; wraps std::char_traits
+// ***************************************************************************
+
+#ifndef BOOST_TEST_UTILS_BCS_CHAR_TRAITS_HPP
+#define BOOST_TEST_UTILS_BCS_CHAR_TRAITS_HPP
+
+// Boost
+#include <boost/config.hpp>
+#include <boost/detail/workaround.hpp>
+#include <boost/test/detail/config.hpp>
+#include <boost/type_traits/add_const.hpp>
+
+// STL
+#include <string>                       // std::char_traits
+#include <cstddef>                      // std::size_t
+
+#include <boost/test/detail/suppress_warnings.hpp>
+
+//____________________________________________________________________________//
+
+namespace boost {
+
+namespace unit_test {
+
+namespace ut_detail {
+
+template<typename CharT> struct bcs_base_char           { typedef CharT type; };
+
+template<> struct bcs_base_char<char const>             { typedef char type; };
+template<> struct bcs_base_char<unsigned char>          { typedef char type; };
+#if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
+template<> struct bcs_base_char<unsigned char const>    { typedef char type; };
+#endif
+
+template<> struct bcs_base_char<wchar_t const>          { typedef wchar_t type; };
+
+// ************************************************************************** //
+// **************               bcs_char_traits                ************** //
+// ************************************************************************** //
+
+template<typename CharT>
+struct bcs_char_traits_impl
+{
+#if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
+    typedef CharT const const_char;
+#else
+    typedef typename boost::add_const<CharT>::type const_char;
+#endif
+    static bool eq( CharT c1, CharT c2 )
+    {
+        return c1 == c2;
+    }
+    static bool lt( CharT c1, CharT c2 )
+    {
+        return c1 < c2;
+    }
+
+    static int compare( const_char* cstr1, const_char* cstr2, std::size_t n )
+    {
+        while( n > 0 ) {
+            if( !eq( *cstr1, *cstr2 ) )
+                return lt( *cstr1, *cstr2 ) ? -1 : 1;
+            ++cstr1;
+            ++cstr2;
+            --n;
+        }
+
+        return 0;
+    }
+
+    static std::size_t length( const_char* cstr )
+    {
+        const_char null_char = CharT();
+
+        const_char* ptr = cstr;
+        while( !eq( *ptr, null_char ) )
+            ++ptr;
+
+        return ptr - cstr;
+    }
+
+    static const_char* find( const_char* s, std::size_t n, CharT c )
+    {
+        while( n > 0 ) {
+            if( eq( *s, c ) )
+                return s;
+
+            ++s;
+            --n;
+        }
+        return 0;
+    }
+};
+
+#ifdef BOOST_CLASSIC_IOSTREAMS
+template<typename CharT>
+struct char_traits_with_find : std::string_char_traits<CharT> {
+    static CharT const* find( CharT const* s, std::size_t n, CharT c )
+    {
+        while( n > 0 ) {
+            if( eq( *s, c ) )
+                return s;
+
+            ++s;
+            --n;
+        }
+        return 0;
+    }
+};
+
+template<> struct bcs_char_traits_impl<char> : public char_traits_with_find<char> {};
+template<> struct bcs_char_traits_impl<wchar_t> : public char_traits_with_find<wchar_t> {};
+#else
+template<> struct bcs_char_traits_impl<char> : public std::char_traits<char> {};
+template<> struct bcs_char_traits_impl<wchar_t> : public std::char_traits<wchar_t> {};
+#endif
+
+template<typename CharT>
+class bcs_char_traits : public bcs_char_traits_impl<CharT> {
+    typedef typename ut_detail::bcs_base_char<CharT>::type                              the_base_char;
+public:
+#ifdef BOOST_CLASSIC_IOSTREAMS
+    typedef std::basic_string<the_base_char, std::string_char_traits<the_base_char> >   std_string;
+#else
+    typedef std::basic_string<the_base_char, std::char_traits<the_base_char> >          std_string;
+#endif
+};
+
+} // namespace ut_detail
+
+} // namespace unit_test
+
+} // namespace boost
+
+//____________________________________________________________________________//
+
+#include <boost/test/detail/enable_warnings.hpp>
+
+#endif // BOOST_TEST_UTILS_BCS_CHAR_TRAITS_HPP