Re: Regex doubt

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From: Ben Lucas (ben_at_nospam.solien.nospam.com)
Date: 10/26/04 

Date: Tue, 26 Oct 2004 09:56:14 -0700

A good friend of mine recently posted an article on his blog regarding using
regular expressions to match HTML. His article can be found at:

http://haacked.com/archive/2004/10/25/1471.aspx

Hope this helps. 

-- 
Ben Lucas
Lead Developer
Solien Technology, Inc.
www.solien.com
"Sriram Krishnan" <ksriram@NOSPAMgmx.net> wrote in message 
news:OXjLTu3uEHA.1616@TK2MSFTNGP10.phx.gbl...
> I'm doing some search-engine related work and want to match the actual 
> content of a html page (i.e any character which is not between a < and a 
>  >). I first wrote
>
> (?:\<.*?>) (?<content>.*?) <?:\<.*?>)
>
> which basically says match any text between a opening and a closing tag. 
> The problem with this is that you almost always have nested tags.This exp 
> is braindead as it chokes on nested tags. So this would match something 
> like / (this would match the '<img/>' part).
>
> So I came up with
>
> (?![\<|>].*?>)
>
> But the problem with this negative-look ahead is that it doesnt advance 
> beyond the first negation - it just stops there.I have a feeling that 
> saying what I *dont* want is the way to go.
>
> I'm a bit of a newbie to RegEx - and I'm trying to write a RegEx which 
> says something like  - 'match any text that doesnt match this expression'. 
> Or is there any way to do reursive regex matching - that is , within a 
> pattern, match the pattern itself?In that case, the first pattern could be 
> made to work as I could have a recursive call inside the (?<content>) 
> pattern which keeps going down until you dont have any more nested tags
>
> Thannks in advance
>
> -- 
> Sriram Krishnan
>
> http://www.dotnetjunkies.com/weblog/sriram
>
>
>

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