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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