Not sure when I wrote this, whether or not it works, or how badly it sucks ......

Not sure when I wrote this, whether or not it works, or how badly it sucks ... but it sure as hell exists, I'll tell you that much for free.

exec/load/rss-atom.js

+load("http.js");
+
+var getFeed = function(url) {
+	var httpRequest = new HTTPRequest();
+	var response = httpRequest.Get(url);
+	if(
+		typeof response == "undefined"
+		||
+		response === null
+		||
+		response == ""
+	) {
+		throw "Empty response";
+	}
+	response = response.replace(/^<\?xml.*\?>/g, "");
+	response = response.replace(/<feed.*>/g, "<feed>");
+	response = response.replace(/<\/?rss.*>/g, "");
+	return new XML(response);
+}
+
+var objectsMatch = function(obj1, obj2) {
+	for(var property in obj1) {
+		if(!obj2.hasOwnProperty(property) || obj1[property] != obj2[property])
+			return false;
+	}
+	for(var property in obj2) {
+		if(!obj1.hasOwnProperty(property))
+			return false;
+	}
+	return true;
+}
+
+var RSS = function(url) {
+	
+	var updated = false;
+	this.__defineGetter__(
+		"updated",
+		function() {
+			var ret = updated;
+			if(updated)
+				updated = false;
+			return ret;
+		}
+	);
+	
+	this.properties = {
+		title			: "",
+		link			: "",
+		description		: "",
+		language		: "",
+		copyright		: "",
+		managingEditor	: "",
+		webMaster		: "",
+		pubDate			: "",
+		lastBuildDate	: "",
+		category		: "",
+		generator		: "",
+		docs			: "",
+		cloud			: "",
+		ttl				: "",
+		image			: "",
+		rating			: "",
+		textInput		: "",
+		skipHours		: "",
+		skipDays		: "",
+		url				: (typeof url == "undefined") ? "" : url
+	};
+	
+	var Item = function(xmlObj) {
+	
+		this.properties = {
+			title		: "",
+			link		: "",
+			description	: "",
+			author		: "",
+			category	: "",
+			comments	: "",
+			enclosure	: "",
+			guid		: "",
+			pubDate		: "",
+			source		: ""
+		};
+		
+		for each(var element in xmlObj) {
+			if(element.name() == "pubDate") {
+				var d = new Date(element.toString());
+				this.properties[element.name()] = d.getTime() * .001;
+			} else {
+				this.properties[element.name()] = element;
+			}
+		}
+		
+		if(this.properties.title == "" && this.properties.description == "")
+			throw "Invalid feed item";
+	
+	}
+	
+	this.items = [];
+	
+	this.load = function() {
+		if(this.properties.url == "")
+			throw "Feed URL not supplied";
+		var feed = getFeed(this.properties.url);
+		for each(var element in feed) {
+			if(element.name() == "item") {
+				var item = new Item(element);
+				var add = true;
+				for(var i = 0; i < this.items.length; i++) {
+					if(!objectsMatch(this.items[i].properties, item.properties))
+						continue;
+					add = false;
+					break;
+				}
+				if(add) {
+					this.items.push(item);
+					updated = true;
+				}
+			} else {
+				this.properties[element.name()] = element;
+			}
+		}
+		
+		if(
+			this.properties.title == ""
+			||
+			this.properties.link == ""
+			||
+			this.properties.description == ""
+		) {
+			throw "Invalid feed";
+		}
+	}
+		
+}
+
+var Atom = function(url) {
+	
+	var updated = false;
+	this.__defineGetter__(
+		"updated",
+		function() {
+			var ret = updated;
+			if(updated)
+				updated = false;
+			return ret;
+		}
+	);
+	
+	this.properties = {
+		id			: "",
+		title		: "",
+		updated		: "",
+		author		: "",
+		link		: "",
+		category	: "",
+		contributor	: "",
+		generator	: "",
+		icon		: "",
+		logo		: "",
+		rights		: "",
+		subtitle	: "",
+		url			: (typeof url == "undefined") ? "" : url
+	};
+	
+	var toTimestamp = function(datestr) {
+		var yy   = datestr.substring(0,4);
+		var mo   = datestr.substring(5,7);
+		var dd   = datestr.substring(8,10);
+		var hh   = datestr.substring(11,13);
+		var mi   = datestr.substring(14,16);
+		var ss   = datestr.substring(17,19);
+		var tzs  = datestr.substring(19,20);
+//		var tzhh = datestr.substring(20,22);
+//		var tzmi = datestr.substring(23,25);
+		var myutc = Date.UTC(yy-0,mo-1,dd-0,hh-0,mi-0,ss-0);
+//		var tzos = (tzs+(tzhh * 60 + tzmi * 1)) * 60000;
+//		var d = new Date(myutc-tzos);
+		var d = new Date(myutc);
+		return d.getTime() * .001;
+	}
+	
+	var Entry = function(xmlObj) {
+		
+		this.properties = {
+			id			: "",
+			title		: "",
+			updated		: "",
+			author		: "",
+			content		: "",
+			link		: "",
+			summary		: "",
+			category	: "",
+			contributor	: "",
+			published	: "",
+			source		: "",
+			rights		: ""
+		};
+		
+		for each(var element in xmlObj) {
+			if(element.name() == "link" && element.hasOwnProperty("@href"))
+				this.properties[element.name()] = element.@href;
+			else if(element.name() == "updated" || element.name() == "published")
+				this.properties[element.name()] = toTimestamp(element.toString());
+			else
+				this.properties[element.name()] = element;
+		}
+		
+		if(
+			this.properties.id == ""
+			||
+			this.properties.title == ""
+			||
+			this.properties.description == ""
+		) {
+			throw "Invalid feed item";
+		}
+
+	}
+	
+	this.entries = [];
+
+	this.load = function() {
+		if(typeof this.properties.url == "undefined")
+			throw "Feed URL not supplied";
+		var feed = getFeed(this.properties.url);
+		for each(var element in feed) {
+			if(element.name() == "entry") {
+				var entry = new Entry(element);
+				var add = true;
+				for(var e = 0; e < this.entries.length; e++) {
+					if(!objectsMatch(this.entries[e].properties, entry.properties))
+						continue;
+					add = false;
+					break;
+				}
+				if(add) {
+					this.entries.push(new Entry(element));
+					updated = true;
+				}
+			} else if(element.name() == "updated") {
+				this.properties[element.name()] = toTimestamp(element);
+			} else {
+				this.properties[element.name()] = element;
+			}
+		}
+		
+		if(
+			this.properties.id == ""
+			||
+			this.properties.title == ""
+			||
+			this.properties.updated == ""
+		) {
+			throw "Invalid feed";
+		}
+	}
+	
+}
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