How do we do regexp with negation with coldfusion?

Question

I'm using Coldfusion.
The following syntax seems to remove all HTML tags for the str variable:

ReReplaceNoCase(#str#,"<[^>]*(?:>|$)","","ALL")>

However, I'd like to keep both <div> and </div> intact. How can I do that?

Answer 1

Instead of a regex, I would recommend using JSoup. It makes parsing and manipulating html fragments much easier.

Download and install JSoup. Create a Whitelist with the tags you wish to keep. Then scrub your html string with JSoup.clean(...):

jsoup = createObject("java", "org.jsoup.Jsoup");
whiteList = createObject("java", "org.jsoup.safety.Whitelist");
cleanString = jsoup.clean( yourHTMLString, Whitelist.none().addTags( [ "div" ] ));
writeDump( cleanString );