mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
25 lines
708 B
C++
25 lines
708 B
C++
#ifndef SPROUT_CSTRING_STRSPN_HPP
|
||
#define SPROUT_CSTRING_XXX_HPP
|
||
|
||
#include <cstddef>
|
||
#include <sprout/config.hpp>
|
||
#include <sprout/cstring/strchr.hpp>
|
||
|
||
namespace sprout {
|
||
// Copyright (C) 2011 RiSK (sscrisk)
|
||
|
||
namespace detail {
|
||
inline SPROUT_CONSTEXPR std::size_t strspn_impl(char const* s1, char const* s2, std::size_t n) {
|
||
return !*s1 || !sprout::strchr(s2, *s1) ? n
|
||
: sprout::detail::strspn_impl(s1 + 1, s2, n + 1)
|
||
;
|
||
}
|
||
} // namespace detail
|
||
|
||
// 7.21.5.6 strspn ŠÖ<C5A0>”
|
||
inline SPROUT_CONSTEXPR std::size_t strspn(char const* s1, char const* s2) {
|
||
return sprout::detail::strspn_impl(s1, s2, 0);
|
||
}
|
||
} // namespace sprout
|
||
|
||
#endif // #ifndef SPROUT_CSTRING_XXX_HPP
|