c ++如何在unicode / utf8中写/读流 [英] c++ how to write/read ofstream in unicode / utf8

问题描述

我有ut8文本文件，使用简单的读取：

I have ut8 text file , that im reading using simple :

ifstream in("test.txt");

现在我喜欢创建一个新的文件wll的ut8编码或Unicode
如何这是与流或其他？
这会创建我ansi编码。

now i like to create new file that wll be ut8 encoding or Unicode how can i do this with ofstream or other ? this creates me ansi Encoding.

ofstream out(fileName.c_str(), ios::out | ios::app | ios::binary);

推荐答案

这很容易，如果你使用 C ++ 11 标准（因为有很多额外的包括像utf8，这永远解决这个问题）。

Ok, about the portable variant. It is easy, if you use the C++11 standard (because there are a lot of additional includes like "utf8", which solves this problem forever).

但如果您想使用旧版标准的多平台代码，可以使用此方法用流写入：

But if you want to use multi-platform code with older standards, you can use this method to write with streams:

1. 阅读关于流的UTF转换器的文章


2. 从上方的来源将 stxutif.h 添加到您的项目



3. 以ANSI模式打开文件并将BOM添加到文件的开头，如下所示：

1. Read the article about UTF converter for streams
2. Add stxutif.h to your project from sources above

3. Open the file in ANSI mode and add the BOM to the start of a file, like this:

std::ofstream fs;
fs.open(filepath, std::ios::out|std::ios::binary);

unsigned char smarker[3];
smarker[0] = 0xEF;
smarker[1] = 0xBB;
smarker[2] = 0xBF;

fs << smarker;
fs.close();

然后将文件打开为 UTF 并将您的内容写在那里：

Then open the file as UTF and write your content there:

std::wofstream fs;
fs.open(filepath, std::ios::out|std::ios::app);

std::locale utf8_locale(std::locale(), new utf8cvt<false>);
fs.imbue(utf8_locale); 

fs << .. // Write anything you want...

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