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// ==UserScript==
// @name University of Toronto Arts & Science Exam Schedule Filter
// @namespace https://alxu.ca/
// @match http://www.artsci.utoronto.ca/current/exams/*
// @version 1.0
// @grant none
// @downloadURL https://alxu.ca/uoft-artsci-exam-filter.user.js
// @require https://www.kryogenix.org/code/browser/sorttable/sorttable.js#sha512=33bdc388d816cab2190ee33918143074a3d1bc8da315b0d6117eb8233d8a7ed51752aa26419296c06120c6faee6053d4589fca2a7590846139d69e84cb600808
// @run-at document-end
// ==/UserScript==
/*
* Copyright 2017 Alex Xu, released under GPLv3 or later
*
* Firefox: Install Greasemonkey: https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/ then (re-)open this file.
* Chrome: Install Tampermonkey: https://chrome.google.com/webstore/detail/tampermonkey/dhdgffkkebhmkfjojejmpbldmpobfkfo then (re-)open this file.
* Note that installing this script directly will also work, but sorting will not be supported, and in addition, on Windows/Mac the script will be automatically and permanently disabled once Chrome restarts.
*/
(function () {
"use strict";
if (document.title.indexOf("Timetable") === -1)
return;
var tbl = document.getElementsByClassName("vertical")[0],
trs = tbl.querySelectorAll("tr:not(:first-child)");
var storage = localStorage.getItem("filterinfo");
if (storage)
try {
storage = JSON.parse(storage);
} catch (e) {
if (!(e instanceof SyntaxError))
throw e;
}
if (!storage)
storage = {};
var parseCourses = function (mycoursesstr) {
var mycourses = {names: [], sections: []};
mycoursesstr.split(/[ ,;]/).forEach(function (c) {
// merge multiple delimiters
if (!c)
return;
var cspl = c.split(/[\/:]/);
if (cspl[1])
mycourses.sections[mycourses.names.length] = cspl[1].toUpperCase();
mycourses.names.push(cspl[0].toUpperCase());
});
return mycourses;
};
// the meat.
var dofilter = function (myname, mycourses) {
var getCI = function (name) {
return mycourses.names.findIndex(function (mycname) {
return name.indexOf(mycname) > -1;
});
};
var checkCourse = function (tr) {
var ch = tr.children,
s = ch[1].innerHTML;
// if we don't have any courses, match everything instead of nothing
if (mycourses.names.length) {
var courseindex = getCI(ch[0].innerHTML);
if (courseindex === -1)
return false;
var l = s.match(/L?[0-9]+/);
if (l && mycourses.sections[courseindex] && l[0].indexOf(mycourses.sections[courseindex]) === -1)
return false;
}
if (myname) {
var nr = s.match(/([A-Z]+) - ([A-Z]+)/);
if (nr && (myname < nr[1] || myname > nr[2]))
return false;
}
return true;
};
for (var i = trs.length - 1; i >= 0; i--) {
trs[i].style.display = checkCourse(trs[i]) ? '' : 'none';
}
};
var ourctnr = document.createElement("div");
ourctnr.appendChild(document.createTextNode("Filter by name: "));
var makeInput = function (attr, size) {
var input = document.createElement("input");
input.type = "text";
input.size = size;
if (storage[attr])
input.value = storage[attr];
input.addEventListener("input", function () {
storage[attr] = this.value.toUpperCase();
// in theory we could cache this, but it's fast enough
dofilter(storage.name, parseCourses(storage.courses));
localStorage.setItem("filterinfo", JSON.stringify(storage));
}, false);
ourctnr.appendChild(input);
};
makeInput("name", "4");
ourctnr.appendChild(document.createTextNode(", courses: "));
makeInput("courses", "50");
ourctnr.appendChild(document.createElement("br"));
ourctnr.appendChild(document.createTextNode("Courses should be separated by spaces and sections preceded by slash."));
ourctnr.appendChild(document.createElement("br"));
ourctnr.appendChild(document.createTextNode("Example: ABC101 XYZ201/L0301"));
tbl.parentNode.insertBefore(ourctnr, tbl);
if (storage.name || storage.courses)
window.requestAnimationFrame(function () {
dofilter(storage.name, parseCourses(storage.courses));
if (typeof sorttable !== "undefined") {
sorttable.init();
sorttable.makeSortable(tbl);
sorttable.innerSortFunction.apply(tbl.getElementsByTagName("th")[2], []);
}
});
if (typeof sorttable !== "undefined")
for (var i = trs.length - 1; i >= 0; i--) {
var dateEl = trs[i].children[2],
dateSplit = dateEl.innerHTML.split(" "); // ["MON", "1", "JAN"]
dateEl.setAttribute("sorttable_customkey", dateSplit[2] + dateSplit[1]); // "JAN1"
}
}());
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