为什么我的std :: wofstream写ansi? [英] Why does my std::wofstream write ansi?

问题描述

我有宽字符串，并且正在将其写入以二进制模式打开的wofstream中.当我查看结果文件时，它丢失了所有其他字节.

I've got wide string and I'm writing it to a wofstream that I opened in out|binary mode. When I look in the resultant file, it's missing every other byte.

我期望当我在Visual Studio中使用二进制编辑器打开文件时，我会看到其他字节为零，但是我看不到零.

I was expecting that when I opened the file in visual studio with the binary editor that I'd see every other byte as a zero, but I'm not seeing the zeros.

你知道我想念什么吗?

谢谢.

代码是这样的:

CAtlStringW data = L"some data";
wofstream stream("c:\hello.txt", ios_base:out|ios_base:binary);
stream.write( data.GetBuffer(), data.GetLength() );
stream.close();

推荐答案

使用输出宽流向文件写入时，实际发生的是将宽字符转换为其他8位编码.

When you write to file using output wide stream, what actually happens is that it converts the wide characters to other 8-bit encoding.

如果您使用的是UTF-8语言环境，则会将宽字符串转换为UTF-8编码的文本(但MSVC不提供UTF-8语言环境)，因此通常它将尝试转换为某些代码页(如cp1251或ASCII)

If you were using UTF-8 locale it would convert wide strings to UTF-8 encoded text (but MSVC does not provides UTF-8 locales) so generally it would try to convert to some code-page like cp1251 or to ASCII.

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