Help with conditional regular expression

[Mithrandir]

I'm trying to extract the message body from an email from an html file of my mail. After looking at the source code with Debug Bar I know that I have to get the <div whose id is "mailContent" so what I want to do is a regular expression that searches for a pattern that starts with <div id="mailContent" and ends with </div> and if there are any opening <div it finds the closing </div>

$conditionalregexp = StringRegExp($sRead,'(?i)(?s)<div id="mailContent"(?(?=(<div){1}?)<div.*?</div>)</div>',3)

But that didn't function. I also tried

$conditionalregexp = StringRegExp($sRead,'(?i)(?s)<DIV id="mailContent"((?si)<\h*DIV\h*(.*?)/*\h*</DIV>)(.*?)</DIV>',3)

And it neither returned anything. I appreciate any help! I would also appreciate some guidance in the use and sintax of (?si) conditions because I have seen it in some UDFs but I haven't find any documentation.

Edited January 10, 2011 by Mithrandir

[bo8ster]

I hate regx, nothing regular about them.

When I was creating regular expressions for JMeter I used http://jakarta.apache.org/oro/demo.html to test my expressions.

You can also download the applet and run it using appletviewer.

I know different programs use different regx and AutoIt's is a common one (Perl I Believe). You may be able to find one out there.

That might help else there are some regx boffins around here.

Edit: For more help look at "Tutorial - Regular Expression" in the help file and go to http://www.autoitscript.com/autoit3/pcrepattern.html.

Edited January 10, 2011 by bo8ster

[storme]

I'm trying to extract the message body from an email from an html file of my mail. After looking at the source code with Debug Bar I know that I have to get the <div whose id is "mailContent" so what I want to do is a regular expression that searches for a pattern that starts with <div id="mailContent" and ends with </div> and if there are any opening <div it finds the closing </div>

Disclaimer:

I know very little about REGEX but I had a similar situation and this was given to me....

Local $asDownloadLinks = StringRegExp(BinaryToString($sPageSource), '(?s)(?i)class="download-link"\s*href="(.*?)">', 3)

to get everything between

class="download-link"\s*href="

and

">

So doing a cut and pastI think your REGEX should look like this

$conditionalregexp = StringRegExp($sRead,'(?s)(?i)<div id="mailContent"(.*?)</DIV>', 3)

That should get you the main criteria then you could do another regex on each of the results from that.

Hope that helps

John

[Mithrandir]

Thank to everyone! After trying a bit more I got a working code that do what I want:

$conditionalregexp = StringRegExp($sRead, '(?i)(?s)<div id="mailContent".*?(?(?=<div).*?</div>)</div>', 3)

I tried putting the .*? right before the last </div> but it didn't function. I also found these useful resources for regexp that were in the signature of someone that I don't remember (thanks to him/her anyway!) :

http://www.regular-expressions.info/lookaround.html

http://regexlib.com/DisplayPatterns.aspx

This is also useful:

http://gskinner.com/RegExr/

[jchd]

You should find a partial answer to your question in a where I just posted an answer. This solves (sort of) the issue with recursing in html tags but you'll have to adapt the idea to your precise situation.

Edited January 10, 2011 by jchd