yt2gc.user.js

// ==UserScript==
// @name Yahoo! Transit to Google Calendar
// @namespace http://lowreal.net/
// @include http://transit.loco.yahoo.co.jp/search/result*

var ym = document.getElementById('selYear').value.match(/(\d\d\d\d)(\d\d)/);
var year  = +ym[1];
var month = +ym[2];
var date  = +document.getElementById('selDay').value;

function datetime (year, month, date, hours, minutes) {
	var offset = 60 * 60 * 9 * 1000;
	var dt = new Date(Date.UTC(year, month - 1, date, hours, minutes) - offset);
	return [
		String(dt.getUTCFullYear()),
		String(101 + dt.getUTCMonth()).substring(1),
		String(100 + dt.getUTCDate()).substring(1),
		'T',
		String(100 + dt.getUTCHours()).substring(1),
		String(100 + dt.getUTCMinutes()).substring(1),
		'00Z'
	].join("");
}

var nodes = document.querySelectorAll('.route-head, .route');
for (var i = 0, len = nodes.length; i < len; i += 2) {
	var head = nodes[i];
	var body = nodes[i+1];

	var fare      = $X('.//span[@class="route-fare-on" or @class="route-fare-off"]', head, String);
	var departure = $X('.//span[@class="route-departure"]', head, String).match(/(\d\d):(\d\d)/);
	var arrive    = $X('.//span[@class="route-arrive-on" or @class="route-arrive-off"]', head, String).match(/(\d\d):(\d\d)/);

	var route = [];
	$X('.//dl[not(@class = "price")]/dt/text() | ./div/ul[@class="traindata"]', body, Array).forEach(function (e) {
		var text = $X('.', e, String).replace(/^\s+|\s+$/g, '').replace(/\s+/g, ' ');
		route.push(text);
	});

	var path = $X('.//dl/dt/text()', body, Array);

	var text   = (path[0].nodeValue + '-' + path[path.length-1].nodeValue).replace(/\s/g, '') + ' ' + fare;
	var start  = datetime(year, month, date, departure[1], departure[2]);
	var finish = datetime(year, month, date, arrive[1], arrive[2]);

	$X('.//ul[@class="service"]/li[@class="cal"]/a', head, Array)[0].href =
		'http://www.google.com/calendar/event?action=TEMPLATE' + 
		'&text=' + encodeURIComponent(text) +
		'&dates=' + start + '/' + finish +
		'&details=' + encodeURIComponent(route.join("\n")) + 
		'&location=&trp=true&sprop=&sprop=name:';
}

// extend version of $X
// $X(exp);
// $X(exp, context);
// $X(exp, type);
// $X(exp, context, type);
function $X (exp, context, type /* want type */) {
	if (typeof context == "function") {
		type    = context;
		context = null;
	}
	if (!context) context = document;
	exp = (context.ownerDocument || context).createExpression(exp, function (prefix) {
		var o = document.createNSResolver(context)(prefix);
		if (o) return o;
		return (document.contentType == "application/xhtml+xml") ? "http://www.w3.org/1999/xhtml" : "";
	});

	switch (type) {
		case String:  return exp.evaluate(context, XPathResult.STRING_TYPE, null).stringValue;
		case Number:  return exp.evaluate(context, XPathResult.NUMBER_TYPE, null).numberValue;
		case Boolean: return exp.evaluate(context, XPathResult.BOOLEAN_TYPE, null).booleanValue;
		case Array:
			var result = exp.evaluate(context, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
			for (var ret = [], i = 0, len = result.snapshotLength; i < len; i++) {
				ret.push(result.snapshotItem(i));
			}
			return ret;
		case undefined:
			var result = exp.evaluate(context, XPathResult.ANY_TYPE, null);
			switch (result.resultType) {
				case XPathResult.STRING_TYPE : return result.stringValue;
				case XPathResult.NUMBER_TYPE : return result.numberValue;
				case XPathResult.BOOLEAN_TYPE: return result.booleanValue;
				case XPathResult.UNORDERED_NODE_ITERATOR_TYPE:
					// not ensure the order.
					var ret = [], i = null;
					while ((i = result.iterateNext())) ret.push(i);
					return ret;
			}
			return null;
		default: throw(TypeError("$X: specified type is not valid type."));
	}
}