I need to parse the corresponding character style from a piece of ansi string

I get the ansi string from another process and display it in my rich text box, so I need to parse the ansi control codes.
Now I use AnsiCodeIterator to get each element, is there a way to parse it to get what kind of style it is?

fn main() {
    let ansi_str = style("Hello world!").force_styling(true).red().on_blue().bold().to_string();
    println!("{:?}", ansi_str);
    AnsiCodeIterator::new(&ansi_str).for_each(|ansi_code| {
        println!("{:?}", ansi_code.0);
        // how to convert ansi code to style?
        // such as let style = Style::from_ansi_code(ansi_code.0);
        // but this method is not implemented
    });
}

Start with the provided AnsiCodeIterator example and trace how ANSI control-code elements are represented. Define what style information must be recovered from the parsed codes and what the resulting API should return; done means the red, blue-background, and bold attributes in the example can be represented reliably.