如何可移植地写std :: wstring到文件？ [英] How to portably write std::wstring to file?

问题描述

我有一个 wstring 这样声明：

// random wstring
std::wstring str = L"abcàdëefŸg€hhhhhhhµa";

这个文字是UTF-8编码的，因为我的源文件是。

我非常希望将其转换为文件读取（当文本编辑器设置为正确的编码时）

I would very much like to get this into a file reading (when text editor is set to the correct encoding)

abcàdëefŸg€hhhhhhhµa

code> ofstream 不是很合作（拒绝采用 wstring 参数）和 wofstream 据说需要知道区域设置和编码设置。我只想输出这组字节。

but ofstream is not very cooperative (refuses to take wstring parameters), and wofstream supposedly needs to know locale and encoding settings. I just want to output this set of bytes. How does one normally do this?

编辑：必须是跨平台，不应依赖于UTF-8编码。我只是碰巧有一组字节存储在 wstring ，并希望输出它们。它很可能是UTF-16或纯ASCII。

It must be cross platform, and should not rely on the encoding being UTF-8. I just happen to have a set of bytes stored in a wstring, and want to output them. It could very well be UTF-16, or plain ASCII.

推荐答案

为什么不把文件写成二进制。只需使用stream与std :: ios ::二进制设置。编辑器应该能够解释它。不要忘记开头的Unicode标志0xFEFF。
您可能更喜欢使用库编写，请尝试下列方法之一：

Why not write the file as a binary. Just use ofstream with the std::ios::binary setting. The editor should be able to interpret it then. Don't forget the Unicode flag 0xFEFF at the beginning. You might be better of writing with a library, try one of these:

http://www.codeproject.com/KB/files/EZUTF.aspx

http://www.gnu.org/software/libiconv/

http://utfcpp.sourceforge.net/

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