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24 lines
701 B
C++
24 lines
701 B
C++
#ifndef SPROUT_CWCHAR_WCSCSPN_HPP
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#define SPROUT_CWCHAR_WCSCSPN_HPP
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#include <cstddef>
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#include <sprout/config.hpp>
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#include <sprout/cstring/strchr.hpp>
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namespace sprout {
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// Copyright (C) 2011 RiSK (sscrisk)
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namespace detail {
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inline SPROUT_CONSTEXPR std::size_t wcscspn_impl(wchar_t const* s1, wchar_t const* s2, std::size_t n) {
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return !*s1 || sprout::wcschr(s2, *s1) ? n
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: sprout::detail::wcscspn_impl(s1 + 1, s2, n + 1)
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;
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}
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} // amespace detail
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inline SPROUT_CONSTEXPR std::size_t wcscspn(wchar_t const* s1, wchar_t const* s2) {
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return sprout::detail::wcscspn_impl(s1, s2, 0);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_CWCHAR_WCSCSPN_HPP
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