result in(stateT& state,
const externT* from,
const externT* from_end,
const externT*& from_next,
internT* to,
internT* to_end,
internT*& to_next) const; // (1) C++98
概要
外部型の文字列を内部型の文字列へ変換する。
戻り値
do_in(state, from, from_end, from_next, to, to_end, to_next)
例
#include <iostream>
#include <locale>
#include <cwchar>
int main()
{
using codecvt_t = std::codecvt<wchar_t, char, std::mbstate_t>;
const auto& cv = std::use_facet<codecvt_t>(std::locale::classic());
const char from[] = "abc";
wchar_t to[4] = {};
std::mbstate_t state{};
const char* from_next = nullptr;
wchar_t* to_next = nullptr;
codecvt_t::result r = cv.in(state, from, from + 3, from_next, to, to + 3, to_next);
*to_next = L'\0';
std::cout << std::boolalpha << (r == codecvt_t::ok) << std::endl;
std::wcout << to << std::endl;
}
出力
true
abc
バージョン
言語
- C++98