hi,
thanks all for your advice. I have just used one of your suggested
regex to accomplish this task:
if ( $text =~ /.*(critical alarm.*?)\./i ) {
my $message = $1;
print $message, "\n";
}
This captures everything starting with critical alarm until it finds a
dot (non greedy).
I agree with Rob Dixon I should be parsing the html, but unfortunately
getting it was proving more complicated than this. If this check
breaks with a firmware update then we will have to see wat we do then,
these things do not get updates so often, fortunately.
--
groeten,
natxo
--
Groeten,
natxo
On Tue, Aug 20, 2013 at 6:20 PM, Rob Dixon <rob.di...@gmx.com> wrote:
> On 20/08/2013 15:02, Natxo Asenjo wrote:
>>
>> hi,
>>
>> for a nagios (monitoring system) check I need to scrape a web site
>> (this is for a network device, a UPS, whatever). This particular
>> device only offers some functionality through a web interface.
>>
>> I am only interested in the text '1 Critical Alarm PresentA site
>> wiring fault exists'; is it possible to match this is a simple way (in
>> fact, the text after 'Critical Alarm Present' may vary, it would be
>> awesome to be able to get that easily. Otherwise I am afraid I will
>> have to start parsing html with HTML::TableExtract
>
>
> Parsing the HTML is absolutely the right way to do this. It's not that
> hard. If you put a sample of the HTML up (perhaps on pastebin?) then
> someone will code it for you. Better that way than writing some
> unreliable regular expression that may fail one day with a text string
> you haven't thought of, or an update to the device firmware.
>
> Rob
>
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