mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-25 21:35:41 +00:00
100 lines
3.1 KiB
C++
100 lines
3.1 KiB
C++
/*=============================================================================
|
||
Copyright (c) 2011-2015 Bolero MURAKAMI
|
||
https://github.com/bolero-MURAKAMI/Sprout
|
||
|
||
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
||
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
||
=============================================================================*/
|
||
#ifndef SPROUT_CSTRING_STRPBRK_HPP
|
||
#define SPROUT_CSTRING_STRPBRK_HPP
|
||
|
||
#include <iterator>
|
||
#include <type_traits>
|
||
#include <sprout/config.hpp>
|
||
#include <sprout/iterator/operation.hpp>
|
||
#include <sprout/utility/pair/pair.hpp>
|
||
#include <sprout/type_traits/is_char_type.hpp>
|
||
#include <sprout/cstring/strchr.hpp>
|
||
#include <sprout/detail/str.hpp>
|
||
|
||
namespace sprout {
|
||
namespace detail {
|
||
template<typename InputIterator1, typename ForwardIterator2>
|
||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, bool>
|
||
strpbrk_impl_1(
|
||
sprout::pair<InputIterator1, bool> current,
|
||
ForwardIterator2 first2,
|
||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||
)
|
||
{
|
||
typedef sprout::pair<InputIterator1, bool> type;
|
||
return current.second || !*current.first ? current
|
||
: n == 1 ? sprout::strchr(first2, *current.first)
|
||
? type(current.first, true)
|
||
: type(sprout::next(current.first), false)
|
||
: sprout::detail::strpbrk_impl_1(
|
||
sprout::detail::strpbrk_impl_1(
|
||
current,
|
||
first2, n / 2
|
||
),
|
||
first2, n - n / 2
|
||
)
|
||
;
|
||
}
|
||
template<typename InputIterator1, typename ForwardIterator2>
|
||
inline SPROUT_CONSTEXPR sprout::pair<InputIterator1, bool>
|
||
strpbrk_impl(
|
||
sprout::pair<InputIterator1, bool> current,
|
||
ForwardIterator2 first2,
|
||
typename std::iterator_traits<InputIterator1>::difference_type n
|
||
)
|
||
{
|
||
return current.second || !*current.first ? current
|
||
: sprout::detail::strpbrk_impl(
|
||
sprout::detail::strpbrk_impl_1(
|
||
current,
|
||
first2, n
|
||
),
|
||
first2, n * 2
|
||
)
|
||
;
|
||
}
|
||
template<typename InputIterator1, typename ForwardIterator2>
|
||
inline SPROUT_CONSTEXPR InputIterator1
|
||
strpbrk(InputIterator1 first1, ForwardIterator2 first2) {
|
||
typedef sprout::pair<InputIterator1, bool> type;
|
||
return sprout::detail::strpbrk_impl(type(first1, false), first2, 1).first;
|
||
}
|
||
} // namespace detail
|
||
|
||
// 7.21.5.4 strpbrk <20><EFBFBD>
|
||
//
|
||
// recursion depth:
|
||
// O(log(N1+N2))
|
||
//
|
||
inline SPROUT_CONSTEXPR char const*
|
||
strpbrk(char const* s1, char const* s2) {
|
||
return sprout::detail::str_find_check(
|
||
sprout::detail::strpbrk(s1, s2)
|
||
);
|
||
}
|
||
inline SPROUT_CONSTEXPR char*
|
||
strpbrk(char* s1, char const* s2) {
|
||
return sprout::detail::str_find_check(
|
||
sprout::detail::strpbrk(s1, s2)
|
||
);
|
||
}
|
||
|
||
template<typename Elem>
|
||
inline SPROUT_CONSTEXPR typename std::enable_if<
|
||
sprout::is_char_type<Elem>::value,
|
||
Elem*
|
||
>::type
|
||
strpbrk(Elem* s1, typename std::remove_const<Elem>::type const* s2) {
|
||
return sprout::detail::str_find_check(
|
||
sprout::detail::strpbrk(s1, s2)
|
||
);
|
||
}
|
||
} // namespace sprout
|
||
|
||
#endif // #ifndef SPROUT_CSTRING_STRPBRK_HPP
|