使用C ++创建和写入UTF-8文件

Question

I have to create a m3u8 playlist in my http streaming C++ server code. m3u8 is nothing but UTF-8 m3u file.

How do I create an UTF-8 file (ie how to write UTF-8 characters to a file)? Maybe with the open() function or some other function in C++ on Linux?

int fd = open("myplaylist.m3u8", O_WRONLY | O_APPEND);

Answer 1

The way you are planning to do the open() is fine.

What will determine if a file is in utf-8, is the characters you're going to write to it. Provided you encode the relevant characters as utf-8, everything will work as expected.

If you plan on converting a given encoding (say ISO-8859-1) to utf-8, a good way to achieve it is to use libiconv which allows to do exactly that.

Answer 2

Whether a file "is" utf-8 depends on the content. As long as you write() the correct byte sequences in there you will be fine.