utils/basic_cstring/compare.hpp

0001 //  (C) Copyright Gennadiy Rozental 2001.
0002 //  Distributed under the Boost Software License, Version 1.0.
0003 //  (See accompanying file LICENSE_1_0.txt or copy at
0004 //  http://www.boost.org/LICENSE_1_0.txt)
0005
0006 //  See http://www.boost.org/libs/test for the library home page.
0007 //
0008 //  File        : $RCSfile$
0009 //
0010 //  Version     : $Revision$
0011 //
0012 //  Description : class basic_cstring comparisons implementation
0013 // ***************************************************************************
0014
0015 #ifndef BOOST_TEST_UTILS_BASIC_CSTRING_COMPARE_HPP
0016 #define BOOST_TEST_UTILS_BASIC_CSTRING_COMPARE_HPP
0017
0018 // Boost.Test
0019 #include <boost/test/utils/basic_cstring/basic_cstring.hpp>
0020
0021 // STL
0022 #include <functional>
0023 #include <cctype>
0024
0025 #include <boost/test/detail/suppress_warnings.hpp>
0026
0027 //____________________________________________________________________________//
0028
0029 # if defined(BOOST_NO_STDC_NAMESPACE) && !BOOST_WORKAROUND(BOOST_BORLANDC, <= 0x570)
0030 namespace std { using ::toupper; }
0031 # endif
0032
0033 namespace boost {
0034
0035 namespace unit_test {
0036
0037 // ************************************************************************** //
0038 // **************                case_ins_compare              ************** //
0039 // ************************************************************************** //
0040
0041 namespace ut_detail {
0042
0043 template<class CharT>
0044 struct case_ins
0045 {
0046     static bool         eq( CharT c1, CharT c2 ) { return (std::toupper)( c1 ) == (std::toupper)( c2 ); }
0047     static bool         lt( CharT c1, CharT c2 ) { return (std::toupper)( c1 ) <  (std::toupper)( c2 ); }
0048
0049     static int          compare( CharT const* s1, CharT const* s2, std::size_t n )
0050     {
0051         for( std::size_t i = 0; i < n; ++i ) {
0052             if( !eq( s1[i], s2[i] ) )
0053                 return lt( s1[i], s2[i] ) ? -1 : 1;
0054         }
0055         return 0;
0056     }
0057 };
0058
0059 } // namespace ut_detail
0060
0061 // ************************************************************************** //
0062 // **************                  case_ins_eq                 ************** //
0063 // ************************************************************************** //
0064
0065 template<class CharT>
0066 inline bool
0067 case_ins_eq( basic_cstring<CharT> x, basic_cstring<CharT> y )
0068 {
0069     return x.size() == y.size() && ut_detail::case_ins<CharT>::compare( x.begin(), y.begin(), x.size() ) == 0;
0070 }
0071
0072 //____________________________________________________________________________//
0073
0074 // ************************************************************************** //
0075 // **************                 case_ins_less                ************** //
0076 // ************************************************************************** //
0077
0078 template<class CharT>
0079 class case_ins_less
0080 {
0081 public:
0082     typedef bool result_type;
0083     typedef basic_cstring<CharT> first_argument_type;
0084     typedef basic_cstring<CharT> second_argument_type;
0085
0086     bool operator()( basic_cstring<CharT> x, basic_cstring<CharT> y ) const
0087     {
0088         return x.size() != y.size()
0089                 ? x.size() < y.size()
0090                 : ut_detail::case_ins<CharT>::compare( x.begin(), y.begin(), x.size() ) < 0;
0091     }
0092 };
0093
0094 //____________________________________________________________________________//
0095
0096 // ************************************************************************** //
0097 // **************                 operators <,>                ************** //
0098 // ************************************************************************** //
0099
0100 template<class CharT>
0101 inline bool
0102 operator <( boost::unit_test::basic_cstring<CharT> const& x,
0103             boost::unit_test::basic_cstring<CharT> const& y )
0104 {
0105     typedef typename boost::unit_test::basic_cstring<CharT>::traits_type traits_type;
0106     return x.size() != y.size()
0107             ? x.size() < y.size()
0108             : traits_type::compare( x.begin(), y.begin(), x.size() ) < 0;
0109 }
0110
0111 //____________________________________________________________________________//
0112
0113 template<class CharT>
0114 inline bool
0115 operator <=( boost::unit_test::basic_cstring<CharT> const& x,
0116             boost::unit_test::basic_cstring<CharT> const& y )
0117 {
0118     return !(y < x);
0119 }
0120
0121 //____________________________________________________________________________//
0122
0123 template<class CharT>
0124 inline bool
0125 operator >( boost::unit_test::basic_cstring<CharT> const& x,
0126             boost::unit_test::basic_cstring<CharT> const& y )
0127 {
0128     return y < x;
0129 }
0130
0131 //____________________________________________________________________________//
0132
0133 template<class CharT>
0134 inline bool
0135 operator >=( boost::unit_test::basic_cstring<CharT> const& x,
0136             boost::unit_test::basic_cstring<CharT> const& y )
0137 {
0138     return !(x < y);
0139 }
0140
0141 //____________________________________________________________________________//
0142
0143 } // namespace unit_test
0144
0145 } // namespace boost
0146
0147 //____________________________________________________________________________//
0148
0149 #include <boost/test/detail/enable_warnings.hpp>
0150
0151 #endif // BOOST_TEST_BASIC_CSTRING_COMPARE_HPP_071894GER