As these these modules are written, the new() takes some rules as to what tags/attributes are and aren't allowed and turns them into a list of allowed tags/attributes.

So far so good.

But I'm not seeing where massaging the rules about allowed and denied tags and attributes generates a win except it might make the checking easier to write.

The algorithm for filtering against the rules will still boil down to: 

1. get a token which is either html markup or text.  
   stop when none are left.
2. it the token is text, add it to the output
2. drop the tag if it's not allowed
3. drop each attibute not allowed
4. repeat

[download]

With a linear problem, I don't see what maintaining state wins for me unless the object accumulates a result for me as I intermittently obtain text to feed it with. Which I admit could be useful, but just not the way I've been programming.

UPDATE: actually, just as important issue than linearity in the sense above is the fact that there's only one thing to do with the object, and when you've done it, it's useful life is over.

In reply to Re: Re: Cleaning up HTML tags by cleverett
in thread Cleaning up HTML tags by cleverett

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