js userAgent parser

gistfile1

navigator.agent = (function() {

    var ua = navigator.userAgent, ver;

    // browser
    var browser = ua.match(/(opera|chrome|safari|firefox|msie|trident)\/?\s*(\.?\d+(\.\d+)*)/i);
    if (browser && (ver = ua.match(/version\/([\.\d]+)/i)) !== null) browser[2] = ver[1];
    var bver = browser[2].split('.');

    // os
    var os = {};
    os.platform = 'Desktop';
    if (/mobile/i.test(ua)) os.platform = 'Mobile';
    if (/tablet/i.test(ua)) os.platform = 'Tablet';

    if (/like Mac OS X/.test(ua)) {
        os.family = 'iOS';
        if (/iPhone/.test(ua)) os.platform = 'iPhone';
        if (/iPad/.test(ua)) os.platform = 'iPad';
        if (/iPod/.test(ua)) os.platform = 'iPod touch';
        osver = /CPU( iPhone)? OS ([0-9\._]+) like Mac OS X/.exec(ua)[2].replace(/_/g, '.');
    }

    if (/Android/.test(ua)) {
        os.family = 'Android';
        osver = /Android ([0-9\.]+)[\);]/.exec(ua)[1];
    }

    if (/webOS\//.test(ua)) {
        os.family = 'webOS';
        osver = /webOS\/([0-9\.]+)[\);]/.exec(ua)[1];
    }

    if (/(Intel|PPC) Mac OS X/.test(ua)) {
        os.family = 'Mac OS X';
        osver = /(Intel|PPC) Mac OS X ?([0-9\._]*)[\)\;]/.exec(ua)[2].replace(/_/g, '.') || true;
    }

    if (/Windows NT/.test(ua)) {
        os.family = 'Windows';
        osver = /Windows NT ([0-9\._]+)[\);]/.exec(ua)[1];
    }

    ver = osver.split('.');

    return {
        string: ua,
        os: {
            platform: os.platform,
            name: os.family+' '+osver,
            family: os.family,
            version: {
                full:  osver,
                major: ver[0] || "",
                minor: ver[1] || "",
                patch: ver[2] || ""
            }
        },
        ua: {
            name: browser[1]+' '+browser[2],
            family: browser[1],
            version: {
                full:  browser[2],
                major: bver[0] || "",
                minor: bver[1] || "",
                patch: bver[2] || ""
            }
        }
    };

})();