I wrote this function and it does what I need. I was wondering if there was a more Perl'ish way to approach it? Basically, the function looks for certain headings (e.g. Router, Network, and Extern) and adds the following lines into a specific array, until a new heading is found. 
sub ospf2_split_database {

    my ($dl, $line) = "";
    my @ospf2database = @_;
    my (@router, @network, @external) = ();

    for $line (@ospf2database) {
        chomp($line);
        if ($line =~ /^Router/)  { $dl = 1; }
        if ($line =~ /^Network/) { $dl = 2; }
        if ($line =~ /^Extern/)  { $dl = 5; }
        switch ($dl) {
            case 1 { push(@router, "$line\n");   }
            case 2 { push(@network, "$line\n");  }
            case 5 { push(@external, "$line\n"); }        
        }
    }            
    return(\@router,\@network,\@external);
}

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In reply to Is there a better way to approach this? by ewhitt

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