A simple (not feature complete) feedparser for node.js. Requires sax.js

FeedParser.js

/*
	Simple feedparser
	
	Based upon: 
		- https://raw.github.com/drudge/node-easyrss
*/

var sax = require('./libs/sax');

module.exports.streamParser = function(){
	var articles = this.articles = [];
	var feed = this.feed = {
		title: "",
		link: "",
		
		parseError: false,
		
		articles: this.articles
	};
	
	var parser = sax.parser(false, {	
		trim : true,
		normalize: true,
		lowercasetags : true
	});
	
	parser.onerror = function(e){
		this.feed.parseError = e || true;
	};
	
	var writeCache, closed;
	
	this.evaluate = function(data){
		if(!closed){
			parser.write(data).close();
			closed = true;
		}
		else
			this.write(data);
	};
	this.write = function(data){
		writeCache += data;
	};
	
	this.end = parser.onend = function(){
		closed = false;
		if(writeCache)
			this.evaluate(writeCache);
		writeCache = "";
	};
	
	var itemCount = 0,
		inItem = false,
		charCache = "";
	
	parser.onopentag = function(tag){
		if(tag.name === "item" || tag.name === "entry"){
			inItem = true;
			articles[itemCount] = {};
		}
	};
	
	parser.onclosetag = function(tagName){
		if(inItem)
			switch(tagName){
				case "pubdate":
					articles[itemCount]["pubdate"] = new Date(charCache); break;
				case "content": case "content:encoded":
					articles[itemCount]["content"] = charCache; break;
				case "dc:creator": case "author":
					articles[itemCount]["author"] = charCache; break;
				
				case "description": case "summary":
				case "link": case "title":
				case "comments":
				case "guid":
					articles[itemCount][tagName] = charCache; break;
				case "item": case "entry":
					inItem = false; itemCount++; break;
				default: console.log(tagName);
			}

		else
			//get feed info
			switch(tagName){
				case "title":
					feed.title = charCache; break;
				case "link":
					feed.link = charCache; break;
			}
		
		charCache = "";
	};
	
	parser.ontext = parser.oncdata = function(text){
		if(charCache === "")
			charCache = text;
		else
			charCache += " " + text;
	};
	return this;
};