Re^3: extract tag content from VLC webserver via XML::Rules

Okay, I'm stuck again. I can print the now_playing content just fine, but that's not really my intention. I would like to use the data further down the line, but can't seem to get it out of the XML-Rules parser section.

I tried to populate a string called $nowplaying with it but outside of the parser section, the string prints just empty. Obviously, the print is again just temporary so I can see that it works before I continue.

How do I get the string contents outside of the parser section? Here's what I have:

my $nowplaying = "";

my $parser = XML::Rules->new(
    stripspaces => 7,
    rules => {
        info => sub {
            $nowplaying = $_[1]->{_content} 
            if $_[1]->{name} eq 'now_playing';
            return ;
        }
    }
);
$parser->parse($streaminfo);

print $nowplaying;
[download]

I'm sure it's again something real simple I'm missing here.

Comment on Re^3: extract tag content from VLC webserver via XML::Rules Download Code

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Re^4: extract tag content from VLC webserver via XML::Rules by vagabonding electron (Curate) on Jun 25, 2013 at 18:19 UTC
Just change the line `$nowplaying = $_[1]->{_content}` [download] to `$nowplaying .= $_[1]->{_content}` [download] You just missed the contatenation sign. :-) Update: Another way could be to populate a data structure with this content, e.g. `push @array,$_[1]->{_content} if ...` where @array is declared outside the parser. Update 2:After some thoughts: in fact your version works for me in the presented example too. However I reckon that you have more than one xml in your real script so that the content is lost if you have `<info name="now_playing"/>`somewhere later (though you should get a warning "Use of uninitialized value" - both in original and contatenation versions (in your OP you have not "use warnings" on).	[reply] [d/l] [select]
Re^5: extract tag content from VLC webserver via XML::Rules by mcoblentz (Scribe) on Jun 26, 2013 at 15:38 UTC
I'm fairly new to Perl also and had a question very similar to yours - I was attempting to extract certain tags and values out of an atom feed. The discussion thread, with several examples provided, can be found here: `http://perlmonks.org/?node_id=1039168` I recommend the example posted by POJ as it allows you to extract values based on the tag using Rules. Very handy. Matt	[reply] [d/l]
Re^5: extract tag content from VLC webserver via XML::Rules by rainforest1155 (Initiate) on Jun 27, 2013 at 11:13 UTC
Adding the contatenation sign did the trick, thanks!	[reply]