bus_2.js

var PREDICTIONS_TAG = "<predictions";
var PREDICTIONS_END_TAG = "</predictions";
var DIRECTION_TAG = "<direction";
var DIRECTION_END_TAG = "</direction";
var PREDICTION_TAG = "<prediction";
var data_xml = msg.payload;
var predictions_begin = data_xml.indexOf(PREDICTIONS_TAG);
data_xml = data_xml.slice(predictions_begin);
var predictions_end = data_xml.indexOf(PREDICTIONS_END_TAG);
var xml_copy = data_xml;
var direction_slices = [];
while (xml_copy.indexOf(DIRECTION_TAG) != -1)
{
	var direction_range = {};
	direction_range["start"] = xml_copy.indexOf(DIRECTION_TAG);
	direction_range["end"] = xml_copy.indexOf(DIRECTION_END_TAG);
	direction_slices.push(xml_copy.slice(direction_range.start,direction_range.end));
	xml_copy = xml_copy.slice(direction_range["end"]+DIRECTION_END_TAG.length);
	xml_copy = xml_copy.slice(xml_copy.indexOf(DIRECTION_TAG));
}

var schedules = [];

for (var dir in direction_slices)
{
	var title_regexp = new RegExp('title=\"\s*([^\"]*[^\"\s])\s*\"');
	var schedule_string = title_regexp.exec(direction_slices[dir])[0].slice('title='.length).replace(/"/g,"") + " --> ";
	while (direction_slices[dir].indexOf("<prediction") != -1)
	{
		var minutes_regexp = new RegExp('minutes=\"\s*([^\"]*[^\"\s])\s*\"');
		var my_prediction = direction_slices[dir].slice(direction_slices[dir].indexOf("<prediction"),direction_slices[dir].indexOf("/>"));
		schedule_string += minutes_regexp.exec(my_prediction)[0].slice('minutes='.length).replace(/"/g,"") + ", ";
		direction_slices[dir] = direction_slices[dir].slice(direction_slices[dir].indexOf("/>")+1);
	}
	schedules.push(schedule_string);
}

var new_msg = {payload:schedules[1]};
return new_msg;