Hi,
Thanks for your help.
For your information (or future readers), I had to take two xml files, add attributes to them xml and join them.

For example :

File1 had:

    <?xml version="1.0" encoding="UTF-8"?>
    <arbre>
      <branche name="courbe" >
        <description>
          <![CDATA[une belle branche]]>
        </description>
        <feuilles>
          <fleur color="blue" order="1" />
          <fleur color="white" order="2" />
          <fleur color="yellow" order="3" />
        </feuilles>
      </branche>
      <!--etc...-->
    </arbre>
[download]

File2 had :

    <?xml version="1.0" encoding="UTF-8"?>
    <arbre>
      <branche name="droite" >
        <description>
          <![CDATA[une branche commune]]>
        </description>
        <feuilles>
          <fleur color="purple" order="1" />
          <fleur color="green" order="2" />
        </feuilles>
      </branche>
      <!--etc...-->
    </arbre>
[download]

And the expected result was

    <arbre>
      <branche name="courbe" type="conifere">
        <description>
          <![CDATA[une belle branche]]>
        </description>
        <feuilles>
          <fleur color="blue" order="1" />
          <fleur color="white" order="2" />
          <fleur color="yellow" order="3" />
        </feuilles>
      </branche>
      <!--etc...-->
      <branche name="droite" type="resineux">
        <description>
          <![CDATA[une branche commune]]>
        </description>
        <feuilles>
          <fleur color="purple" order="1" />
          <fleur color="green" order="2" />
        </feuilles>
      </branche>
      <!--etc...-->
    </arbre>
[download]

Here is the code :

sub _mergeXML
{
    my $FILE1   = shift;
    my $FILE2   = shift;
    my $FILEOUT = shift;

    my $parser = XML::LibXML->new();
    my @wanted;

    my $genericDom = $parser->load_xml(location => $FILE1);
    for my $branch_node ($genericDom->findnodes("/arbre/branche"))
    { $branch_node->setAttribute(type => "conifere"); }
    push(@wanted, $genericDom->documentElement->findnodes("./*"));

    my $customDom = $parser->load_xml(location => $FILE2);
    for my $branch_node ($customDom->findnodes("/arbre/branche"))
    { $branch_node->setAttribute(type => "resineux"); }
    push(@wanted, $customDom->documentElement->findnodes("./*"));

    my $new = XML::LibXML::Document->new( '1.0', 'UTF-8' );
    $new->addChild($new->createComment("So, in the end we have a fores
+t..."));

    my $root = XML::LibXML::Element->new( 'arbre' );
    $new->addChild( $root );

    $root->addChild( $_ ) for @wanted;

    my $pp = XML::LibXML::PrettyPrint->new(indent_string => "    ");
    $pp->pretty_print($new);

    open(FILE,">$FILEOUT") or die $!; print FILE $new->toString;close 
+FILE;
}
[download]

Cheers

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.