Monday, November 08, 2010 at 12:07 AM.

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system.verbs.builtins.xml.rss.viewRssBox

on viewRssBox (url, boxTitle=nil, width=125, frameColor="#000000", titleBarTextColor="#000000", titleBarColor="#ADD8E6", boxFillColor="#FFFFFF", timeZone="PST", adrStoryArrivedCallback=nil, maxItems=infinity, timeZoneOffsetHours=0) {
	<<Changes
		<<3/15/02; 2:47:10 PM by DW
			<<Instead of initializing user.xml.rss here, call xml.rss.init, which does it for us.
		<<12/28/2000; 2:05:46 PM by DW
			<<The expiration mechanism didn't work, put in a fail-proof one, and tested it. It works.
		<<1/2/01; 1:13:01 PM by DW
			<<Set xmlUrl in the cached service table.
		<<1/6/2001; 9:56:38 AM by DW
			<<Add adrStoryArrivedCallback parameter, default nil, pass it through to xml.rss.readService.
		<<02/09/01; 6:52:41 PM by PBS
			<<New optional maxItems parameter, defaults to infinity (current behavior), allows the caller to specify the maximum number of news items that appear in the HTML rendering. This parameter is passed through to xml.rss.getHtmlRendering.
		<<05/08/01; 12:16:05 AM by JES
			<<New optional parameter, timeZoneOffsetHours, is passed to xml.rss.getHtmlRendering. Default value is 0.
	xml.rss.init ();
	local (adrincache = @user.xml.rss.cache.[url]);
	local (flread = true);
	if defined (adrincache^) { //see if we don't have to read it
		if typeof (adrincache^) == tabletype {
			if defined (adrincache^.timeExpires) {
				if clock.now () < adrincache^.timeExpires {
					flread = false}}}};
	if flread {
		xml.rss.readService (url, @user.xml.rss.cache, "http://frontier.userland.com/xmlRss", adrStoryArrivedCallback);
		adrincache^.timeExpires = clock.now () + (60 * 60)};
	adrincache^.xmlUrl = url;
	return (xml.rss.getHtmlRendering (adrincache, boxTitle, width, frameColor, titleBarTextColor, titleBarColor, boxFillColor, timeZone, maxItems, timeZoneOffsetHours))}
<<bundle //test code
	<<webbrowser.displaytext (xml.rss.viewRssBox ("http://www.ourfavoritesongs.com/users/dave@userland.com/rss/soap.xml"))

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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.