将Unicode UTF-8文件读入wstring [英] Read Unicode UTF-8 file into wstring

问题描述

如何在Windows平台上将Unicode（UTF-8）文件读入 wstring （s）？

How can I read a Unicode (UTF-8) file into wstring(s) on the Windows platform?

推荐答案

根据@Hans Passant的评论，最简单的方法是使用 _ wfopen_s 。使用模式 rt，ccs = UTF-8 打开文件。

According to a comment by @Hans Passant, the simplest way is to use _wfopen_s. Open the file with mode rt, ccs=UTF-8.

这是另一个纯C ++解决方案，最少使用VC ++ 2010：

Here is another pure C++ solution that works at least with VC++ 2010:

#include <locale>
#include <codecvt>
#include <string>
#include <fstream>
#include <cstdlib>

int main() {
    const std::locale empty_locale = std::locale::empty();
    typedef std::codecvt_utf8<wchar_t> converter_type;
    const converter_type* converter = new converter_type;
    const std::locale utf8_locale = std::locale(empty_locale, converter);
    std::wifstream stream(L"test.txt");
    stream.imbue(utf8_locale);
    std::wstring line;
    std::getline(stream, line);
    std::system("pause");
}

除了 locale :: empty code>（这里 locale :: global（）也可以工作）和 wchar_t * basic_ifstream 构造函数，这甚至应该是非常符合标准（其中标准意味着C ++ 0x，当然）。

Except for locale::empty() (here locale::global() might work as well) and the wchar_t* overload of the basic_ifstream constructor, this should even be pretty standard-compliant (where "standard" means C++0x, of course).

这篇关于将Unicode UTF-8文件读入wstring的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！