使用C ++用字节顺序标记（BOM）编写csv文件吗？

Question

I am trying to create a csv file with UTF8 with BOM using c++. Can anybody help me, how to do this?

Answer 1

Simply put the BOM into a string and write that to your file (using whatever method you're using, eg streams or classic cstdio):

const char *bom = "\xef\xbb\xbf"; // UTF-8
const char *bom_alt = {0xef, 0xbb, 0xbf, 0}; // the null termination is optional, depending on how you write it later on

Then you'll just have to ensure you're actually writing proper UTF-8 and no ANSI or wide char strings. I'd recommend UTF8-CPP for that (used it in work projects already and works perfectly fine without having to use some huge library such as Boost).

Answer 2

如果使用Qt库，则可以使用QTextStream::setGenerateByteOrderMark(bool)添加BOM。