Function add_ids

src/interface.rs:358–389

(mathml: Element)

fn add_ids(mathml: Element) -> Element {
    use std::time::SystemTime;
    let time = if cfg!(target_family = "wasm") {
        rand::random::<usize>()
    } else {
        SystemTime::now().duration_since(SystemTime::UNIX_EPOCH).unwrap().as_millis() as usize
    };
    let time_part = radix_fmt::radix(time, 36).to_string();
    let random_part = radix_fmt::radix(rand::random::<usize>(), 36).to_string();
    let prefix = "M".to_string() + &time_part[time_part.len()-3..] + &random_part[random_part.len()-4..] + "-"; // begin with letter
    add_ids_to_all(mathml, &prefix, 0);
    return mathml;

    fn add_ids_to_all(mathml: Element, id_prefix: &str, count: usize) -> usize {
        let mut count = count;
        if mathml.attribute("id").is_none() {
            mathml.set_attribute_value("id", (id_prefix.to_string() + &count.to_string()).as_str());
            mathml.set_attribute_value("data-id-added", "true");
            count += 1;
        };

        if crate::xpath_functions::is_leaf(mathml) {
            return count;
        }
        
        for child in mathml.children() {
            let child = as_element(child);
            count = add_ids_to_all(child, id_prefix, count);
        }
        return count;
    }
}

pub fn get_element(package: &Package) -> Element {
    let doc = package.as_document();