Sprout/sprout/cwchar/wcsstr.hpp
2012-10-06 00:58:56 +09:00

24 lines
630 B
C++

#ifndef SPROUT_CWCHAR_WCSSTR_HPP
#define SPROUT_CWCHAR_WCSSTR_HPP
#include <sprout/config.hpp>
namespace sprout {
// Copyright (C) 2011 RiSK (sscrisk)
inline SPROUT_CONSTEXPR wchar_t const*
wcsstr(wchar_t const* s1, wchar_t const* s2) {
return !*s2 ? s1
: !*s1 ? nullptr
: *s1 == *s2 && sprout::wcsstr(s1 + 1, s2 + 1) ? s1
: sprout::wcsstr(s1 + 1, s2)
;
}
inline SPROUT_CONSTEXPR wchar_t*
wcsstr(wchar_t* s1, wchar_t const* s2) {
return const_cast<wchar_t*>(sprout::wcsstr(const_cast<wchar_t const*>(s1), s2));
}
} // namespace sprout
#endif // #ifndef SPROUT_CWCHAR_WCSSTR_HPP