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https://github.com/bolero-MURAKAMI/Sprout.git
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49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2016 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_CSTRING_STRNCPY_HPP
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#define SPROUT_CSTRING_STRNCPY_HPP
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#include <iterator>
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#include <sprout/config.hpp>
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namespace sprout {
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namespace detail {
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template<typename OutputNullTerminatedIterator, typename NullTerminatedIterator>
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inline SPROUT_CXX14_CONSTEXPR OutputNullTerminatedIterator
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strncpy(OutputNullTerminatedIterator s1, NullTerminatedIterator s2, std::size_t n) {
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typedef typename std::iterator_traits<OutputNullTerminatedIterator>::value_type value_type;
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OutputNullTerminatedIterator result = s1;
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while (n) {
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--n;
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if (!(*s1++ = *s2++)) {
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break;
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}
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}
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while (n) {
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--n;
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*s1++ = value_type();
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}
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return result;
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}
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} // namespace detail
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// 7.21.2.4 The strncpy function
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//
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inline SPROUT_CXX14_CONSTEXPR char*
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strncpy(char* s1, char const* s2, std::size_t n) {
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return sprout::detail::strncpy(s1, s2, n);
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}
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template<typename Elem>
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inline SPROUT_CXX14_CONSTEXPR Elem*
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strncpy(Elem* s1, Elem const* s2, std::size_t n) {
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return sprout::detail::strncpy(s1, s2, n);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_CSTRING_STRNCPY_HPP
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