Download UdeM schedule as iCal

bookmarklet-dev.js

(function(d,s){
    var n,b=d.getElementsByTagName(s)[0];
    function l(u){
        n=d.createElement(s);
        n.src=u;
        b.parentNode.insertBefore(n,b);
    }
    l("//ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js");
    l("//gist.github.com/raw/3409527/converter.js");
})(document, "script");

converter.js

(function() {
    var $headers = $('table a[href*="index_fiche_cours"]').closest('tr');
    var $table = $headers.closest('table');
    var $tr = $table.find('tr');
    var course, periode;
    var courses = {};
    var year = $table.text().match(/Date limite.* ([0-9]+)/)[1];
    var months = ['janv','févr','mars','avr','mai','juin','juil','août','sept','oct','nov','déc'];
    function textOf(el) {
        return $.trim(el.text());
    }
    function parseDate(text) {
        if (text === '') return null;

        var date = new Date;
        var matches = text.match(/([0-9]+)\s+([a-z\u00E0-\u00FC]+)(\s|\.)*$/i);
        date.setYear(year);
        date.setMonth(months.indexOf(matches[2]));
        date.setDate(matches[1]);
        date.setHours(0);
        date.setMinutes(0);
        date.setSeconds(0);
        date.setMilliseconds(0);
        return date;
    }
    function parseDateRow(tr) {
        var offset = 0;
        if ($('td', tr).length == 9) {
            offset = 5;
        }
        var start = textOf($('td:eq('+(offset + 0)+')', tr));
        var end = textOf($('td:eq('+(offset + 1)+')', tr));

        var date = {
            start: parseDate(start),
            end: parseDate(end),
            local: textOf($('td:eq('+(offset + 2)+')', tr)),
            immeuble: textOf($('td:eq('+(offset + 3)+')', tr)),
        };
        return date;
    }
    $tr.each(function(){
        if ($headers.filter(this).length) {
            var $a = $('a[href*="index_fiche_cours"]', this);
            course = {
                code: $a.text(),
                name: textOf($a.closest('td').next()).replace(/\s*\([0-9]+ cr.*/, ''),
                classes: []
            };
            courses[course.code] = course;
        } else if ($(this).children('td').length == 9) {
            var type = textOf($('td:first', this));
            if (type.match(/^(th|tp|ex)/)) {
                periode = {
                    type: type,
                    jour: textOf($('td:eq(2)',this)),
                    debut: textOf($('td:eq(3)',this)),
                    fin: textOf($('td:eq(4)',this)),
                    dates: []
                };
                periode.dates.push(parseDateRow(this));
                course.classes.push(periode);
            }
        } else if ($(this).children('td').length == 4) {
            periode.dates.push(parseDateRow(this));
        } else if ($(this).children('td').length == 1) {
            var matches = $(this).text().match(/Professeur.*:\s*(.*)\n/);
            course.prof = matches.length > 0 ? matches[1] : "n/d";
        }
    });
    function pad(num) {
        return num > 9 ? num : "0" + num;
    }
    function formatDate(base, hour, min) {
        base.setHours(hour);
        base.setMinutes(min);
        return base.getUTCFullYear() + pad(base.getUTCMonth() + 1) + pad(base.getUTCDate()) + 'T' 
            + pad(base.getUTCHours()) + pad(base.getUTCMinutes()) + '00' + 'Z';
    }
    var ics = "BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:-//hacksw/handcal//NONSGML v1.0//EN\n";
    for (var i in courses) {
        for (var j in courses[i].classes) {
            for (var k in courses[i].classes[j].dates) {
                var debut = courses[i].classes[j].debut.match(/^([0-9]+):([0-9]+)$/);
                var fin = courses[i].classes[j].fin.match(/^([0-9]+):([0-9]+)$/);
                var date = courses[i].classes[j].dates[k];
                var current = new Date(date.start);
                var end = date.end ? date.end : new Date(date.start);
                end.setSeconds(1);


                while (current < end) {
                    // console.log(current, end);
                    var base = new Date(current);
                    ics += "BEGIN:VEVENT\n";
                    ics += "UID:" + courses[i].code + '-' + formatDate(base, debut[1], debut[2]) + "@umontreal.ca\n";
                    ics += "DTSTAMP:" + formatDate(base, debut[1], debut[2]) + "\n";
                    ics += "DTSTART:" + formatDate(base, debut[1], debut[2]) + "\n";
                    ics += "DTEND:" + formatDate(base, fin[1], fin[2]) + "\n";
                    ics += "SUMMARY:" + courses[i].code + ' - ' + courses[i].classes[j].type.toUpperCase() + ' - ' + courses[i].name + "\n";
                    ics += "LOCATION:" + date.local + ' - ' + date.immeuble + "\n";
                    ics += "DESCRIPTION:" + courses[i].prof + "\n";
                    ics += "END:VEVENT\n";
                    current.setDate(current.getDate() + 7);
                }
            }
        }
    }
    ics += "END:VCALENDAR";
    // open("data:text/calendar;charset=utf8," + escape(ics));
    location.href = "data:text/calendar;charset=utf8," + escape(ics);
})();