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xml help

Shakti_ThePower · 2004-01-29T15:13:48+00:00

I need to delete the tag from xml file. How can I do using perl. xyz Richa Dalwala Interwoven Consultant

Shakti_ThePower

I need to delete the <metatags> tag from xml file. How can I do using perl.
<?xml version="1.0" encoding="UTF-8"?>
<content name="airquality">
<metatags>
<meta content="dfds" name="dsffd"/>
</metatags>
<htmlpara>xyz
</htmlpara>
</content>

Richa Dalwala
Interwoven Consultant

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Comments

Migrateduser

Here's a stab...

$xml =~ s/(.*)<metatags>[.*]</metatags>(.*)/$1$2/g;

You might need to play with the regex a bit, but I'm hoping this is a good start.

dave@simpleinternet.com
+USA (215) 962-5153

Adam Stoller

If you're going to play around with XML files in Perl - take a look at one of the many Perl modules specifically for that purpose (XML: Smiley Tongue

arser, XML: Smiley Very Happy

OM, TeamSite::XMLnode, etc.)

Using a regex could work - but you'll have to bullet-proof it against all sorts of different possible arangements such that you'd usually be better off if you just parsed the file as XML to begin with and didn't bother with the regex (IMO).

The regex posted (at this time) won't work because it's assuming a single-line upon which to act upon - which may or may not be the case - and isn't from the code you posted).
--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

gzevin

yep, you are right.

however, if a regex is needed, the following simple regex will work:

$xml =~ s!</{0,1}metatags>!!gs;

Greg Zevin, Ph.D. Comp. Sc.
Independent Interwoven Consultant/Architect
Sydney, AU

New folder.zip

Migrateduser

> however, if a regex is needed, the following simple regex will work:
>
> $xml =~ s!</{0,1}metatags>!!gs;

This example demonstrates the point the Ghoti made. It will remove the 'metatags' start and end tags, but it will leave the 'meta' child elements behind. That probably isn't the desired result. It is usually more reliable to use those modules that were designed to handle XML.

Brinko Kobrin
Interwoven Staff Engineer

JonathonG

Just to add my $.02...

XML::Twig is a very nice library for manipulating XML. It provides methods to add or remove entire "chunks" of the XML tree. I used it extensively on a TeamXML project where we needed to manipulate XML files programmatically.

Jonathon
Independent Interwoven Contractor

gzevin

Brinko,

I was not arguing - it was just a point to make Smiley Happy

(actually, one more regex would have gotten off <meta tags as well)

but I agree - using XML-specific modules to do some XML surgery is a better way

Greg Zevin, Ph.D. Comp. Sc.
Independent Interwoven Consultant/Architect
Sydney, AU

megamala

How can I get the values between [ and ] into an array using regex from the following string.

$str = qq(xyadfsd [x123] ddd dfdsf [read3] 33sdfa [val4] dfdskfjdksjf);

TIA
MM Guptha

Migrateduser

funny... I just wrote one of these just ten minutes ago. Try this...

$str = qq(xyadfsd [x123] ddd dfdsf [read3] 33sdfa [val4] dfdskfjdksjf);
my $match;

$match =~ m/[.*](\[[a-zA-Z0-9]+\])[.*](\[[a-zA-Z0-9]+\])[.*](\[[a-zA-Z0-9]+\])[.*])/;
push @array, ($1, $2, $3);

Dave

dave@simpleinternet.com
+USA (215) 962-5153

Jeremy

If you're happy to put it into an array then this would be a pretty good one:

@array = ( $str =~ m|\[(.*?)\]|g );

Hope that works.

New_test.zip

megamala

Thanks, Thats what I am looking.

TIA
MM Guptha

output.pdf

Pagein.docx