I usually process similar files line by line, keeping the status (project, job) in a variable that survives the loop. It is not clear from your description whether a job can have more than one type and file, so I assumed it can't. 
#!/usr/bin/perl
use warnings;
use strict;


sub output {
    my ($id, @jobs) = @_;
    print join("\t", $id, @{$_}{qw(JOBID TYPE FILE)}), "\n" for @jobs;
}


my @jobs;
my $id;
while (<>) {
    my ($tag, $value) = m{<(.*)>(.*)</\1>} or next;
    if ('PROJECT_ID' eq $tag) {
        output($id, @jobs);
        $id = $value;
        @jobs = ();
    } else {
        $tag =~ s/[0-9]+$//;
        $#jobs++ if 'JOBID' eq $tag;
        $jobs[-1]{$tag} = $value;
    }
}
output($id, @jobs); # Don't forget to output the last job.

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In reply to Re: Parsing an file that has xml like syntax by choroba
in thread Parsing an file that has xml like syntax by Anonymous Monk

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