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I’m confused – you’re not using anything Java regex here – you can do everything here with CF!

{cfset contentVariable = rereplace( contentVariable , ‘src=”(/.+?)”‘ , ‘src=”#domainName#\1″‘ ) /}

Though you could of course have used Java’s lookbehind and possessive quantifiers, for something that is (potentially) very slightly better performance, like so:

{cfset contentVariable = contentVariable.replaceAll( ‘(?<=src=”)/[^"]++’ , ‘#domainName#$0′ )/}

But this is still using Regex to parse HTML, which has a number of pitfalls. The ideal method is using a DOM parser instead.

The ideal way is to use a DOM parser instead. (The best we’ve got for CF is XmlParse, which isn’t great; there are Java DOM parsers which I keep meaning to check out but haven’t got around to yet.)

Here’s an example that uses Java’s lookbehind and possessive quantifiers, for something that is (potentially) very slightly better performance, like so:

<cfset contentVariable = contentVariable.replaceAll( ‘(?

But this is still using Regex to parse HTML, which has a number of pitfalls. The ideal method is using a DOM parser instead.

>cfset contentVariable = ReReplace(contentVariable,’src=”(\/.+?)\”‘, ‘src=”#domainName#\1″‘,’all’) /<

Why not just use the ColdFusion ReReplace() function like below?

Cheers
Matthew