Function rust_util::util_io::copy_io_with_head

pub fn copy_io_with_head<R: ?Sized, W: ?Sized>(
    reader: &mut R, 
    writer: &mut W, 
    total: i64, 
    head: &str, 
    print_status_context: &mut PrintStatusContext
) -> Result<u64> where
    R: Read,
    W: Write,