From: perl-win32-users-boun...@listserv.activestate.com
[mailto:perl-win32-users-boun...@listserv.activestate.com] On Behalf Of
Kprasad
Sent: 26 February 2010 15:56
To: perl-win32-users@listserv.ActiveState.com
Subject: Perl Regex
> Hi All
>
> What will be the perfect Regular Expression to convert below mentioned
'Search Text' to 'Replacement
> Text' while 'Single Line' option is ON.
>
> When I use below mentioned Regex
>
<index-entry(?:[^>]+)?>((?!<\/index-entry>).*?)</index-entry>\s*<pageId>
([0-9]+)</pageId>
>
> And replaces wrongly
I think it is going to be hard to be of much help. Mostly because you
don't show us any Perl.
First, a regular expression can't change anything, it can only match.
Second, I find it easier to work out what is going on with non-trivial
regular expressions if I use the 'x' switch, which allows me to break
the RE over multiple lines, and include comments. Particularly useful
with the 'qr' quoting operator. Your RE, for example, might look like
this.
my $re=qr{<index-entry(?:[^>]+)?>
((?!<\/index-entry>).*?)
</index-entry>
\s*
<pageId>
([0-9]+)
</pageId>
}x;
However, as you don't provide any information on how that RE is used,
its going to be difficult to say what might be going wrong. If you could
provide a small example script, that we could cut & paste & run, it
would make it much easier.
Finally, your data looks a lot like XML. A dedicated parser will
generally do a more reliable job of parsing XML that regular
expressions, even Perl regular expressions.
HTH
--
Brian Raven
Please consider the environment before printing this email.
This e-mail may contain confidential and/or privileged information. If you are
not the intended recipient or have received this e-mail in error, please advise
the sender immediately by reply e-mail and delete this message and any
attachments without retaining a copy.
Any unauthorised copying, disclosure or distribution of the material in this
e-mail is strictly forbidden.
_______________________________________________
Perl-Win32-Users mailing list
Perl-Win32-Users@listserv.ActiveState.com
To unsubscribe: http://listserv.ActiveState.com/mailman/mysubs
