export function clamp(num, a, b) {
    return Math.max(Math.min(num, Math.max(a, b)), Math.min(a, b));
}

export function secondToTime(second) {
    const add0 = num => (num < 10 ? `0${num}` : String(num));
    const hour = Math.floor(second / 3600);
    const min = Math.floor((second - hour * 3600) / 60);
    const sec = Math.floor(second - hour * 3600 - min * 60);
    return (hour > 0 ? [hour, min, sec] : [min, sec]).map(add0).join(':');
}

export function escape(str) {
    return str.replace(
        /[&<>'"]/g,
        tag =>
            ({
                '&': '&amp;',
                '<': '&lt;',
                '>': '&gt;',
                "'": '&#39;',
                '"': '&quot;',
            }[tag] || tag),
    );
}