Re: Grabing a Page and Need to Parse it..

Will the block always be wrapped by those comments?
Unless I misunderstand your question, a simple regexp will remove all of that.

$webpage =~ s/<!-- Begin MRTG Block -->.*<!-- End MRTG Block -->//os;
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Does the table occur more than once in the webpage? If so, add the 'g' (global - as often as it's encountered) option to the Regexp.

Comment on Re: Grabing a Page and Need to Parse it.. Download Code

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Re: Re: Grabing a Page and Need to Parse it.. by merlyn (Sage) on May 07, 2001 at 20:23 UTC
The /o there does nothing. And you'll probably need to make it .? instead of . to keep from grabbing too much. -- Randal L. Schwartz, Perl hacker	[reply]
Re: Re: Re: Grabing a Page and Need to Parse it.. by AidanLee (Chaplain) on May 07, 2001 at 20:53 UTC
also keep in mind that '.' does not match newlines. so you may be looking for `[.\n]*?` instead. update: I should have known that I was missing something. It seemed most out of character for merlyn to miss something like that.	[reply] [d/l]
Re: Re: Re: Re: Grabing a Page and Need to Parse it.. by merlyn (Sage) on May 07, 2001 at 20:54 UTC
No, the /s properly takes care of that, and your regex matches only periods and newlines. -- Randal L. Schwartz, Perl hacker	[reply]
Re: Re: Re: Grabing a Page and Need to Parse it.. by swngnmonk (Pilgrim) on May 08, 2001 at 21:05 UTC
Ok, this is beyond the scope of the initial question, but I'm curious anyways - the /o caches the Regexp so it doesn't need to be re-compiled, correct? I'm not familiar with the innards of the interpreter, but in the event we returned to this RE, wouldn't that be an (albeit extremely minimal) optimization?	[reply]
Re: Re: Re: Re: Grabing a Page and Need to Parse it.. by merlyn (Sage) on May 08, 2001 at 21:08 UTC
The /o does something only if there are variables in the regex. I saw no variables in that regex. -- Randal L. Schwartz, Perl hacker	[reply]