1 // Copyright (c) 2009-2020 Vladimir Batov.
2 // Use, modification and distribution are subject to the Boost Software License,
3 // Version 1.0. See http://www.boost.org/LICENSE_1_0.txt.
4 
5 #ifndef BOOST_CONVERT_DETAIL_IS_CHAR_HPP
6 #define BOOST_CONVERT_DETAIL_IS_CHAR_HPP
7 
8 #include <boost/convert/detail/config.hpp>
9 #include <cctype>
10 #include <cwctype>
11 
12 namespace boost { namespace cnv
13 {
14     using  char_type = char;
15     using uchar_type = unsigned char;
16     using wchar_type = wchar_t;
17 
18     namespace detail
19     {
20         template<typename> struct is_char             : std::false_type {};
21         template<>         struct is_char< char_type> : std:: true_type {};
22         template<>         struct is_char<wchar_type> : std:: true_type {};
23     }
24     template <typename T> struct is_char : detail::is_char<typename boost::remove_const<T>::type> {};
25 
26     template<typename char_type> inline bool      is_space(char_type);
27     template<typename char_type> inline char_type to_upper(char_type);
28 
is_space(char_type c)29     template<> inline bool       is_space ( char_type c) { return bool(std::isspace(static_cast<uchar_type>(c))); }
is_space(uchar_type c)30     template<> inline bool       is_space (uchar_type c) { return bool(std::isspace(c)); }
is_space(wchar_type c)31     template<> inline bool       is_space (wchar_type c) { return bool(std::iswspace(c)); }
to_upper(char_type c)32     template<> inline  char_type to_upper ( char_type c) { return std::toupper(static_cast<uchar_type>(c)); }
to_upper(uchar_type c)33     template<> inline uchar_type to_upper (uchar_type c) { return std::toupper(c); }
to_upper(wchar_type c)34     template<> inline wchar_type to_upper (wchar_type c) { return std::towupper(c); }
35 }}
36 
37 #endif // BOOST_CONVERT_DETAIL_IS_CHAR_HPP
38 
39