Hi all.

I am cultivating an interest in scraping RSS feeds and the following program is my first real attempt: 

#!/usr/bin/perl -w
use strict;
use XML::Parser;
use LWP::Simple;

my $feed;

open( FH, ">feed.xml") or die "Error: $!\n";

$feed = get("http://rss.news.yahoo.com/rss/science");

print FH $feed;


my $parser = new XML::Parser ( Handlers => {
                               Start   => \&hdl_start,
                               End     => \&hdl_end,
                               Char    => \&hdl_char,
                             } );
                                                                      
+                                                                    
$parser->parsefile("feed.xml");

sub hdl_start {

    my ($p, $ele, %attribs) = @_;
    $attribs{'string'} = '';
    $feed = \%attribs;
}

sub hdl_end {                                                         
+       

    my ($p, $ele) = @_;
    display_feed($feed) if $ele eq 'title';
    display_feed($feed) if $ele eq 'link';
}

sub hdl_char {

   my ($p, $str) = @_;
   no strict 'refs';

   $feed->{'string'} .= $str;
}

sub display_feed {

   my $attribs = shift;
   $attribs =~ s/\n//g;

   print "$attribs->{'string'}\n\n";
}

[download]


The last title tag doesn't generate a corresponding link and the following message appears once the feed is displayed:

no element found at line 594, column 12, byte 45056 at C:/Perl/site/lib/XML/Parser.pm line 185

Ideally, the program would display the feed in html formatted links with the title directly above them for easy navigation to the story in question.

I've used XML::RSS before but I decided to experiment with an additional module.

Thanks,
~Katie

In reply to Writing a simple RSS feed 'grabber' with XML::Parser. by DigitalKitty

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