Re: Lib::XML removing Node

I need to remove one of the <new> nodes.

...is a difficult thing to put into code. Either of two? Duplicate tags? Tags with duplicate values? Last one? All after first? Here's snippet that does the last one. Use the docs -- XML::LibXML -- to adjust as needed.

use warnings;
use strict;
use XML::LibXML;

my $doc = XML::LibXML->new->parse_fh(\*DATA);
# or ->parse_file("news.xml")

my $root = $doc->getDocumentElement;
my @nodes = $root->findnodes("new");
$root->removeChild($nodes[-1]); # Remove the last.

print $doc->serialize();# Or... print $root->serialize();

__DATA__
<listaNews>
    <new>
      blah blah blah
    </new>
    <new>
      blah blah blah
    </new>
</listaNews>
[download]

Comment on Re: Lib::XML removing Node Download Code

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Re^2: Lib::XML removing Node by ikegami (Patriarch) on Jun 13, 2009 at 22:03 UTC
The following is a more general solution. It doesn't rely on knowing the parent. `my $node = ...; # Node to delete $node->parentNode->removeChild( $node );` [download] It's the same in XML::DOM (which the OP mentioned). `my $node = ...; # Node to delete $node->getParentNode->removeChild( $node );` [download]	[reply] [d/l] [select]
Re^2: Lib::XML removing Node by smattiuz (Initiate) on Jun 13, 2009 at 21:56 UTC
thanks mate, that worked :D i'll try to modify your solution to delete all elements and delete one specific one, then i'll post it to other users :D thanks!!!!!!!	[reply]
Re^3: Lib::XML removing Node by Your Mother (Archbishop) on Jun 13, 2009 at 23:02 UTC
Sure thing. ikegami's suggestion is probably the most portable way to handle it too. It skips some of the node nonsense (naked text between elements are nodes\|children too) and it is the way I usually do it in code. This would remove any after the first of a given TAGNAME. `my @nodes = $doc->findnodes("//TAGNAME"); if ( @nodes > 1 ) { $_->getParentNode->removeChild($_) for @nodes[1..$#nodes]; }` [download]	[reply] [d/l]
Re^3: Lib::XML removing Node by smattiuz (Initiate) on Jun 17, 2009 at 13:13 UTC
yes! everything went good! i modified the code to delete last inserted items and all items older than the current date. This all was for a university exam (HTML,CSS,XML,PERL,JAVASCRIPT), teacher gave me 28 out of 30 for my project (since it had a little issue with css in internet explorer! Really appreciated all your help!	[reply]