Monday, November 08, 2010 at 12:06 AM.

---

system.verbs.builtins.webserver.standardMacros.refererFilter

on refererFilter (referer, matchString, returnString) {
	referer = string.lower (referer);
	matchString = string.lower (matchString);
	if matchString beginsWith "!" {
		matchstring = string.popleading (matchstring, "!");
		if not (referer contains matchString) {
			return (returnString)}}
	else {
		if referer contains matchString {
			return (returnString)}};
	return ("")}; << return empty string if condition is not met.

---

This listing is for code that runs in the OPML Editor environment. I created these listings because I wanted the search engines to index it, so that when I want to look up something in my codebase I don't have to use the much slower search functionality in my object database. Dave Winer.