1 // (C) Copyright Gennadiy Rozental 2001.
2 // Distributed under the Boost Software License, Version 1.0.
3 // (See accompanying file LICENSE_1_0.txt or copy at
4 // http://www.boost.org/LICENSE_1_0.txt)
6 // See http://www.boost.org/libs/test for the library home page.
10 // Version : $Revision$
12 // Description : generic char traits class; wraps std::char_traits
13 // ***************************************************************************
15 #ifndef BOOST_TEST_UTILS_BCS_CHAR_TRAITS_HPP
16 #define BOOST_TEST_UTILS_BCS_CHAR_TRAITS_HPP
19 #include <boost/config.hpp>
20 #include <boost/detail/workaround.hpp>
21 #include <boost/test/detail/config.hpp>
22 #include <boost/type_traits/add_const.hpp>
25 #include <string> // std::char_traits
26 #include <cstddef> // std::size_t
28 #include <boost/test/detail/suppress_warnings.hpp>
30 //____________________________________________________________________________//
38 template<typename CharT> struct bcs_base_char { typedef CharT type; };
40 template<> struct bcs_base_char<char const> { typedef char type; };
41 template<> struct bcs_base_char<unsigned char> { typedef char type; };
42 #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
43 template<> struct bcs_base_char<unsigned char const> { typedef char type; };
46 template<> struct bcs_base_char<wchar_t const> { typedef wchar_t type; };
48 // ************************************************************************** //
49 // ************** bcs_char_traits ************** //
50 // ************************************************************************** //
52 template<typename CharT>
53 struct bcs_char_traits_impl
55 #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
56 typedef CharT const const_char;
58 typedef typename boost::add_const<CharT>::type const_char;
60 static bool eq( CharT c1, CharT c2 )
64 static bool lt( CharT c1, CharT c2 )
69 static int compare( const_char* cstr1, const_char* cstr2, std::size_t n )
72 if( !eq( *cstr1, *cstr2 ) )
73 return lt( *cstr1, *cstr2 ) ? -1 : 1;
82 static std::size_t length( const_char* cstr )
84 const_char null_char = CharT();
86 const_char* ptr = cstr;
87 while( !eq( *ptr, null_char ) )
93 static const_char* find( const_char* s, std::size_t n, CharT c )
106 #ifdef BOOST_CLASSIC_IOSTREAMS
107 template<typename CharT>
108 struct char_traits_with_find : std::string_char_traits<CharT> {
109 static CharT const* find( CharT const* s, std::size_t n, CharT c )
122 template<> struct bcs_char_traits_impl<char> : public char_traits_with_find<char> {};
123 template<> struct bcs_char_traits_impl<wchar_t> : public char_traits_with_find<wchar_t> {};
125 template<> struct bcs_char_traits_impl<char> : public std::char_traits<char> {};
126 template<> struct bcs_char_traits_impl<wchar_t> : public std::char_traits<wchar_t> {};
129 template<typename CharT>
130 class bcs_char_traits : public bcs_char_traits_impl<CharT> {
131 typedef typename ut_detail::bcs_base_char<CharT>::type the_base_char;
133 #ifdef BOOST_CLASSIC_IOSTREAMS
134 typedef std::basic_string<the_base_char, std::string_char_traits<the_base_char> > std_string;
136 typedef std::basic_string<the_base_char, std::char_traits<the_base_char> > std_string;
140 } // namespace ut_detail
142 } // namespace unit_test
146 //____________________________________________________________________________//
148 #include <boost/test/detail/enable_warnings.hpp>
150 #endif // BOOST_TEST_UTILS_BCS_CHAR_TRAITS_HPP