mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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238 lines
8.8 KiB
C++
238 lines
8.8 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2019 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_STRING_DETAIL_FIND_HPP
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#define SPROUT_STRING_DETAIL_FIND_HPP
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#include <sprout/config.hpp>
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#include <sprout/string/char_traits.hpp>
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#include HDR_ALGORITHM_MIN_MAX_SSCRISK_CEL_OR_SPROUT
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namespace sprout {
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namespace string_detail {
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_impl_1(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return pos <= len - n
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? String::traits_type::eq(data[pos], *s) && String::traits_type::compare(data + (pos + 1), s + 1, n - 1) == 0
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? pos
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: sprout::string_detail::find_impl_1<String>(data, len, s, pos + 1, n)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_impl(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return n == 0 ? (pos <= len ? pos : String::npos)
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: n <= len ? sprout::string_detail::find_impl_1<String>(data, len, s, pos, n)
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: String::npos
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;
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}
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template<typename String>
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static SPROUT_CONSTEXPR typename String::size_type
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find_c_impl_1(
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typename String::const_iterator data, typename String::size_type len,
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typename String::const_iterator p
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)
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{
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return sprout::char_traits_helper<typename String::traits_type>::is_found(p, data + len) ? p - data
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: String::npos
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;
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}
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template<typename String>
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static SPROUT_CONSTEXPR typename String::size_type
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find_c_impl(
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typename String::const_iterator data, typename String::size_type len,
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typename String::value_type c, typename String::size_type pos
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)
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{
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return pos < len ? sprout::string_detail::find_c_impl_1<String>(
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data, len, sprout::char_traits_helper<typename String::traits_type>::find(data + pos, len - pos, c)
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)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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rfind_impl_1(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return String::traits_type::compare(data + pos, s, n) == 0 ? pos
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: pos > 0 ? sprout::string_detail::rfind_impl_1<String>(data, len, s, pos - 1, n)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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rfind_impl(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return n <= len ? sprout::string_detail::rfind_impl_1<String>(
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data, len, s, NS_SSCRISK_CEL_OR_SPROUT::min(typename String::size_type(len - n), pos), n
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)
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: String::npos
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;
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}
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template<typename String>
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static SPROUT_CONSTEXPR typename String::size_type
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rfind_c_impl_1(
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typename String::const_iterator data, typename String::size_type len, typename String::value_type c
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)
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{
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return len > 0
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? String::traits_type::eq(data[len - 1], c)
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? len - 1
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: sprout::string_detail::rfind_c_impl_1<String>(data, len - 1, c)
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: String::npos
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;
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}
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template<typename String>
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static SPROUT_CONSTEXPR typename String::size_type
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rfind_c_impl(
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typename String::const_iterator data, typename String::size_type len,
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typename String::value_type c, typename String::size_type pos
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)
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{
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return len ? sprout::string_detail::rfind_c_impl_1<String>(data, len - 1 > pos ? pos + 1 : len, c)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_first_of_impl(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return n && pos < len
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? sprout::char_traits_helper<typename String::traits_type>::is_found(
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sprout::char_traits_helper<typename String::traits_type>::find(s, n, data[pos]), s + n
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)
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? pos
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: sprout::string_detail::find_first_of_impl<String>(data, len, s, pos + 1, n)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_last_of_impl_1(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return sprout::char_traits_helper<typename String::traits_type>::is_found(
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sprout::char_traits_helper<typename String::traits_type>::find(s, n, data[len]), s + n
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) ? len
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: len ? sprout::string_detail::find_last_of_impl_1<String>(data, len - 1, s, pos, n)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_last_of_impl(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return len && n ? sprout::string_detail::find_last_of_impl_1<String>(data, len - 1 > pos ? pos : len - 1, s, pos, n)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_first_not_of_impl(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return pos < len
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? !sprout::char_traits_helper<typename String::traits_type>::is_found(
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sprout::char_traits_helper<typename String::traits_type>::find(s, n, data[pos]), s + n
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)
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? pos
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: sprout::string_detail::find_first_not_of_impl<String>(data, len, s, pos + 1, n)
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: String::npos
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;
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}
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template<typename String>
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static SPROUT_CONSTEXPR typename String::size_type
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find_first_not_of_c_impl(
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typename String::const_iterator data, typename String::size_type len,
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typename String::value_type c, typename String::size_type pos
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)
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{
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return pos < len ? !String::traits_type::eq(data[pos], c)
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? pos
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: sprout::string_detail::find_first_not_of_c_impl<String>(data, len, c, pos + 1)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_last_not_of_impl_1(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return !sprout::char_traits_helper<typename String::traits_type>::is_found(
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sprout::char_traits_helper<typename String::traits_type>::find(s, n, data[len]), s + n
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) ? len
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: len ? sprout::string_detail::find_last_not_of_impl_1<String>(data, len - 1, s, pos, n)
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: String::npos
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;
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}
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template<typename String, typename ConstIterator>
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static SPROUT_CONSTEXPR typename String::size_type
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find_last_not_of_impl(
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typename String::const_iterator data, typename String::size_type len,
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ConstIterator s, typename String::size_type pos, typename String::size_type n
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)
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{
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return len ? sprout::string_detail::find_last_not_of_impl_1<String>(data, len - 1 > pos ? pos : len - 1, s, pos, n)
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: String::npos
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;
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}
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template<typename String>
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static SPROUT_CONSTEXPR typename String::size_type
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find_last_not_of_c_impl_1(
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typename String::const_iterator data, typename String::size_type len,
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typename String::value_type c, typename String::size_type pos
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)
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{
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return !String::traits_type::eq(data[len], c) ? len
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: len ? sprout::string_detail::find_last_not_of_c_impl_1<String>(data, len - 1, c, pos)
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: String::npos
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;
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}
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template<typename String>
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static SPROUT_CONSTEXPR typename String::size_type
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find_last_not_of_c_impl(
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typename String::const_iterator data, typename String::size_type len,
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typename String::value_type c, typename String::size_type pos
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)
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{
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return len ? sprout::string_detail::find_last_not_of_c_impl_1<String>(data, len - 1 > pos ? pos : len - 1, c, pos)
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: String::npos
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;
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}
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} // namespace string_detail
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} // namespace sprout
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#endif // #ifndef SPROUT_STRING_DETAIL_FIND_HPP
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