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Almost certainly you don't want to parse XML using hand rolled code. Instead use one of the many XML parsing modules (XML::Twig is highly recommended). Robustly parsing XML is hard and you will spend much more time trying to get it right than you will learning to use a module to do the heavy lifting for you. Consider:

use warnings; use strict; use XML::Twig; my $xml = <<XML; <ROOT hostname="bumblebee" tstamp="2011/09/21 22:24:05"> <APPLICATION> <PORT>7777</PORT> <APP_HOME>/extra/localcw/opt/APP/sun4</APP_HOME> <VERSION>V36.11.01</VERSION> <PERF_HOME>/usr/localcw/opt/APP/Solaris-2-9-sparc-64</ +PERF_HOME> <PERF_VERSION>glanceSunOS 5.9 (Solaris 9) (sparc, 64 B +it) 7.3.00.6059 Jul 19 2006</PERF_VERSION> <STAR_VERSION>3.0</STAR_VERSION> <DEFAULT_ACCT>root</DEFAULT_ACCT> <HISTORY_RETENTION>90</HISTORY_RETENTION> <LAST_FILE_DOWN>StAR-201105090928.tar</LAST_FILE_DOWN> <LAST_STATUS>No download file found</LAST_STATUS> <ACL> <ACCOUNT id="f9a64ef61c"> <MD5>f9a64ef61c</MD5> <USERNAME>*</USERNAME> <HOST>flower</HOST> <PERMISSION>P</PERMISSION> </ACCOUNT> </ACL> </APPLICATION> </ROOT> XML my $twig = XML::Twig->new( twig_roots => {'APPLICATION' => \&doStuff, 'ACL' => \&doStuff} ); $twig->parse($xml); sub doStuff { my ($t, $elt) = @_; print "Found ", $elt->tag(), "\n"; $t->purge; # frees the memory }

Prints:

Found ACL Found APPLICATION
True laziness is hard work

In reply to Re: RegEx Against Arbitrary XML Tags by GrandFather
in thread RegEx Against Arbitrary XML Tags by onegative

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