46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
//
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// Copyright (c) 2022-2023 Alexander Grund
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//
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#ifndef BOOST_LOCALE_UTIL_STRING_HPP
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#define BOOST_LOCALE_UTIL_STRING_HPP
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#include <boost/locale/config.hpp>
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#include <limits>
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namespace boost { namespace locale { namespace util {
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/// Return the end of a C-string, i.e. the pointer to the trailing NULL byte
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template<typename Char>
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Char* str_end(Char* str)
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{
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while(*str)
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++str;
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return str;
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}
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inline constexpr bool is_upper_ascii(const char c)
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{
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return 'A' <= c && c <= 'Z';
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}
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inline constexpr bool is_lower_ascii(const char c)
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{
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return 'a' <= c && c <= 'z';
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}
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inline constexpr bool is_numeric_ascii(const char c)
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{
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return '0' <= c && c <= '9';
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}
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/// Cast an unsigned char to a (possibly signed) char avoiding implementation defined behavior
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constexpr char to_char(unsigned char c)
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{
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return static_cast<char>((c - (std::numeric_limits<char>::min)()) + (std::numeric_limits<char>::min)());
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}
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}}} // namespace boost::locale::util
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#endif |