[857] | 1 | // (C) Copyright Gennadiy Rozental 2004-2005.
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| 2 | // Distributed under the Boost Software License, Version 1.0.
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| 3 | // (See accompanying file LICENSE_1_0.txt or copy at
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| 4 | // http://www.boost.org/LICENSE_1_0.txt)
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| 5 |
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| 6 | // See http://www.boost.org/libs/test for the library home page.
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| 7 | //
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| 8 | // File : $RCSfile: bcs_char_traits.hpp,v $
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| 9 | //
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| 10 | // Version : $Revision: 1.3 $
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| 11 | //
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| 12 | // Description : generic char traits class; wraps std::char_traits
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| 13 | // ***************************************************************************
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| 14 |
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| 15 | #ifndef BOOST_TEST_BCS_CHAR_TRAITS_HPP_071894GER
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| 16 | #define BOOST_TEST_BCS_CHAR_TRAITS_HPP_071894GER
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| 17 |
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| 18 | // Boost
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| 19 | #include <boost/config.hpp>
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| 20 | #include <boost/detail/workaround.hpp>
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| 21 | #include <boost/test/detail/config.hpp>
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| 22 | #include <boost/type_traits/add_const.hpp>
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| 23 |
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| 24 | // STL
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| 25 | #include <string> // std::char_traits
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| 26 | #include <cstddef> // std::size_t
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| 27 |
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| 28 | #include <boost/test/detail/suppress_warnings.hpp>
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| 29 |
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| 30 | //____________________________________________________________________________//
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| 31 |
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| 32 | namespace boost {
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| 33 |
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| 34 | namespace unit_test {
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| 35 |
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| 36 | namespace ut_detail {
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| 37 |
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| 38 | template<typename CharT> struct bcs_base_char { typedef CharT type; };
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| 39 |
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| 40 | template<> struct bcs_base_char<char const> { typedef char type; };
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| 41 | template<> struct bcs_base_char<unsigned char> { typedef char type; };
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| 42 | #if !BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x551))
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| 43 | template<> struct bcs_base_char<unsigned char const> { typedef char type; };
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| 44 | #endif
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| 45 |
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| 46 | template<> struct bcs_base_char<wchar_t const> { typedef wchar_t type; };
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| 47 |
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| 48 | // ************************************************************************** //
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| 49 | // ************** bcs_char_traits ************** //
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| 50 | // ************************************************************************** //
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| 51 |
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| 52 | template<typename CharT>
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| 53 | struct bcs_char_traits_impl
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| 54 | {
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| 55 | #if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564))
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| 56 | typedef CharT const const_char;
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| 57 | #else
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| 58 | typedef typename boost::add_const<CharT>::type const_char;
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| 59 | #endif
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| 60 | static bool eq( CharT c1, CharT c2 )
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| 61 | {
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| 62 | return c1 == c2;
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| 63 | }
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| 64 | static bool lt( CharT c1, CharT c2 )
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| 65 | {
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| 66 | return c1 < c2;
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| 67 | }
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| 68 |
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| 69 | static int compare( const_char* cstr1, const_char* cstr2, std::size_t n )
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| 70 | {
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| 71 | while( n > 0 ) {
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| 72 | if( !eq( *cstr1, *cstr2 ) )
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| 73 | return lt( *cstr1, *cstr2 ) ? -1 : 1;
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| 74 | ++cstr1;
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| 75 | ++cstr2;
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| 76 | --n;
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| 77 | }
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| 78 |
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| 79 | return 0;
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| 80 | }
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| 81 |
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| 82 | static std::size_t length( const_char* cstr )
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| 83 | {
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| 84 | const_char null_char = CharT();
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| 85 |
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| 86 | const_char* ptr = cstr;
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| 87 | while( !eq( *ptr, null_char ) )
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| 88 | ++ptr;
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| 89 |
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| 90 | return ptr - cstr;
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| 91 | }
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| 92 |
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| 93 | static const_char* find( const_char* s, std::size_t n, CharT c )
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| 94 | {
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| 95 | while( n > 0 ) {
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| 96 | if( eq( *s, c ) )
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| 97 | return s;
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| 98 |
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| 99 | ++s;
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| 100 | --n;
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| 101 | }
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| 102 | return 0;
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| 103 | }
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| 104 | };
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| 105 |
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| 106 | #ifdef BOOST_CLASSIC_IOSTREAMS
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| 107 | template<typename CharT>
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| 108 | struct char_traits_with_find : std::string_char_traits<CharT> {
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| 109 | static CharT const* find( CharT const* s, std::size_t n, CharT c )
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| 110 | {
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| 111 | while( n > 0 ) {
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| 112 | if( eq( *s, c ) )
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| 113 | return s;
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| 114 |
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| 115 | ++s;
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| 116 | --n;
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| 117 | }
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| 118 | return 0;
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| 119 | }
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| 120 | };
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| 121 |
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| 122 | template<> struct bcs_char_traits_impl<char> : char_traits_with_find<char> {};
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| 123 | template<> struct bcs_char_traits_impl<wchar_t> : char_traits_with_find<wchar_t> {};
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| 124 | #else
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| 125 | template<> struct bcs_char_traits_impl<char> : std::char_traits<char> {};
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| 126 | template<> struct bcs_char_traits_impl<wchar_t> : std::char_traits<wchar_t> {};
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| 127 | #endif
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| 128 |
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| 129 | template<typename CharT>
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| 130 | class bcs_char_traits : public bcs_char_traits_impl<CharT> {
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| 131 | typedef typename ut_detail::bcs_base_char<CharT>::type the_base_char;
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| 132 | public:
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| 133 | #ifdef BOOST_CLASSIC_IOSTREAMS
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| 134 | typedef std::basic_string<the_base_char, std::string_char_traits<the_base_char> > std_string;
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| 135 | #else
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| 136 | typedef std::basic_string<the_base_char, std::char_traits<the_base_char> > std_string;
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| 137 | #endif
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| 138 | };
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| 139 |
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| 140 | } // namespace ut_detail
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| 141 |
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| 142 | } // namespace unit_test
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| 143 |
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| 144 | } // namespace boost
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| 145 |
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| 146 | //____________________________________________________________________________//
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| 147 |
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| 148 | #include <boost/test/detail/enable_warnings.hpp>
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| 149 |
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| 150 | // ***************************************************************************
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| 151 | // Revision History :
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| 152 | //
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| 153 | // $Log: bcs_char_traits.hpp,v $
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| 154 | // Revision 1.3 2005/02/20 08:27:09 rogeeff
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| 155 | // This a major update for Boost.Test framework. See release docs for complete list of fixes/updates
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| 156 | //
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| 157 | // Revision 1.2 2005/02/01 06:40:08 rogeeff
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| 158 | // copyright update
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| 159 | // old log entries removed
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| 160 | // minor stilistic changes
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| 161 | // depricated tools removed
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| 162 | //
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| 163 | // Revision 1.1 2005/01/22 18:21:40 rogeeff
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| 164 | // moved sharable staff into utils
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| 165 | //
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| 166 | // ***************************************************************************
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| 167 |
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| 168 | #endif // BOOST_TEST_BCS_CHAR_TRAITS_HPP_071894GER
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