Here is the chunk of code which I used to perform this task:
open(XML, "<$ARGV[0]") or die "Can not open $ARGV[0]: $!";
my $xmltext;
{
local $/ = undef;
$xmltext=<XML>;
}
close(XML);
while($xmltext=~
/<index-entry(?:[^>]+)?>(?:.*?)<\/index-entry>(?:[^\n]*?)<pageId>([^<]+)<\/pageId>/is)
{
$page=$2;
$page=~ s/ *\n+\t+/ /g;
$page=~ s/, /,/g;
$xmltext=~
s|<index-entry(?:[^>]+)?>(.*?)</index-entry>(?:[^\n]*?)<pageId>[^<]+</pageId>|<index-entry
chid="$1" pages="$page">$2</index-entry>|s
}
$xmltext=~ s/<index-entry chid="/<index-entry id="/;
open(XMLOUT, ">$localpath/$xmlfile\_final.xml") or die "Can not open
$localpath/$xmlfile\_final.xml: $!";
print XMLOUT $xmltext;
close(XMLOUT);
Thanks
Kanhaiya
----- Original Message -----
From: "Brian Raven" <bra...@nyx.com>
To: <perl-win32-users@listserv.ActiveState.com>
Sent: Friday, February 26, 2010 10:22 PM
Subject: RE: Perl Regex
>
> 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
>
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