Re: generating attributes and content for an element

Manuel Souto Pico schrieb:
> I'm starting to learn XML with Perl (and I'm not an experienced Perl
> programmer either), so I'd be thankful if you could be patient ;)

Hi Manuel,

as you're saying you're a newbie, and in case you don't already know,
always start your programs with:

use strict;
use warnings;

That'll spare you a lot of trouble.

> The doubt that I have is about generating both content* and attributes
> for an element.
>
> (*): content which is not other elements, that is.
>
> By means of
>
> my $data = {
>        e => ['element value'],
>        a => 'attribute value'*
> *};

This is a syntax error, and incomplete. You're using XML::Simple, which
may become very complicated if what you want to do isn't simple enough.

> I can get  this:
>
> <root a="attribute value">
>  <e>element value</e>
> </root>
>
> However, what I'm after is something like
>
> <root>
>  <e a="attribute value">element value</e>
> </root>

Take a look at the documentation and look for "ContentKey". XML::Simple
uses nested data structures in Perl to represent XML, which falls short
of representing XML. Hence one of several workarounds, to define a magic
key "content" (or whatever you choose to name it using "ContentKey"),
which allows you to add text content.

See: perldoc XML::Simple

milu@colinux:~ > cat /tmp/simple.pl
use strict;
use warnings;
use XML::Simple;
my $data = {
     Salat => {
         content => 'Gurken',
         mit     => 'Tomaten',
     }
};
print XMLout( $data, KeepRoot => 1);

milu@colinux:~ > perl /tmp/simple.pl
<Salat mit="Tomaten">Gurken</Salat>

I hope this helps.

Michael Ludwig
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