Add vulcanize to tools.

tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/FeedHandler.js

Index: tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/FeedHandler.js
diff --git a/tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/FeedHandler.js b/tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/FeedHandler.js
new file mode 100644
index 0000000000000000000000000000000000000000..a62e61c6b8db83c7b0fa97907fdff51eaa59ee24
--- /dev/null
+++ b/tools/vulcanize/node_modules/vulcanize/node_modules/cheerio/node_modules/htmlparser2/lib/FeedHandler.js
@@ -0,0 +1,90 @@
+var index = require("./index.js"),
+    DomHandler = index.DomHandler,
+	DomUtils = index.DomUtils;
+
+//TODO: make this a streamable handler
+function FeedHandler(callback){
+	this.init(callback, { ignoreWhitespace: true });
+}
+
+require("util").inherits(FeedHandler, DomHandler);
+
+FeedHandler.prototype.init = DomHandler;
+
+function getElements(what, where){
+	return DomUtils.getElementsByTagName(what, where, true);
+}
+function getOneElement(what, where){
+	return DomUtils.getElementsByTagName(what, where, true, 1)[0];
+}
+function fetch(what, where, recurse){
+	return DomUtils.getText(
+		DomUtils.getElementsByTagName(what, where, recurse, 1)
+	);
+}
+
+var isValidFeed = function(value) {
+	return value === "rss" || value === "feed" || value === "rdf:RDF";
+};
+
+FeedHandler.prototype.onend = function() {
+	var feed = {},
+		feedRoot = getOneElement(isValidFeed, this.dom),
+		tmp, childs;
+
+	if (feedRoot) {
+		if(feedRoot.name === "feed"){
+			childs = feedRoot.children;
+
+			feed.type = "atom";
+			if(tmp = fetch("id", childs)) feed.id = tmp;
+			if(tmp = fetch("title", childs)) feed.title = tmp;
+			if((tmp = getOneElement("link", childs)) && (tmp = tmp.attribs) && (tmp = tmp.href)) feed.link = tmp;
+			if(tmp = fetch("subtitle", childs)) feed.description = tmp;
+			if(tmp = fetch("updated", childs)) feed.updated = new Date(tmp);
+			if(tmp = fetch("email", childs, true)) feed.author = tmp;
+
+			feed.items = getElements("entry", childs).map(function(item){
+				var entry = {}, tmp;
+
+				item = item.children;
+
+				if(tmp = fetch("id", item)) entry.id = tmp;
+				if(tmp = fetch("title", item)) entry.title = tmp;
+				if((tmp = getOneElement("link", item)) && (tmp = tmp.attribs) && (tmp = tmp.href)) entry.link = tmp;
+				if(tmp = fetch("summary", item)) entry.description = tmp;
+				if(tmp = fetch("updated", item)) entry.pubDate = new Date(tmp);
+				return entry;
+			});
+		} else{
+			childs = getOneElement("channel", feedRoot.children).children;
+
+			feed.type = feedRoot.name.substr(0, 3);
+			feed.id = "";
+			if(tmp = fetch("title", childs)) feed.title = tmp;
+			if(tmp = fetch("link", childs)) feed.link = tmp;
+			if(tmp = fetch("description", childs)) feed.description = tmp;
+			if(tmp = fetch("lastBuildDate", childs)) feed.updated = new Date(tmp);
+			if(tmp = fetch("managingEditor", childs)) feed.author = tmp;
+
+			feed.items = getElements("item", feedRoot.children).map(function(item){
+				var entry = {}, tmp;
+
+				item = item.children;
+
+				if(tmp = fetch("guid", item)) entry.id = tmp;
+				if(tmp = fetch("title", item)) entry.title = tmp;
+				if(tmp = fetch("link", item)) entry.link = tmp;
+				if(tmp = fetch("description", item)) entry.description = tmp;
+				if(tmp = fetch("pubDate", item)) entry.pubDate = new Date(tmp);
+				return entry;
+			});
+		}
+	}
+	this.dom = feed;
+	DomHandler.prototype._handleCallback.call(
+		this, feedRoot ? null : Error("couldn't find root of feed")
+	);
+};
+
+module.exports = FeedHandler;