Function arf_strings::host_os_str_to_bytes

pub fn host_os_str_to_bytes(host: &OsStr) -> Result<Cow<'_, [u8]>>

Convert an &OsStr produced by POSIX-style APIs into a Cow<[u8]> which is either plain UTF-8 or an ARF encoding. Returns an error if the input string contains NUL bytes.