#! /bin/perl -w

## test to see when/how a file goes out of scope

use strict;

my $file = 'test.data';
my $frame_marker = 'data';

open(FILE_FD, $file) or die($!);

foreach my $loop (1..10) {
        my $data = get_replay_data();
        print "DATA READ:\n", map{ chomp; "  VALUE='$_'\n" } @$data;
        }

sub get_replay_data { # read from replay file and return a block of data
        my $found = 0;
        my @data = ();

        die("ERROR -- File handle has closed (why??): $!") if (eof(FILE_FD));

        foreach my $line (<FILE_FD>) { # pull records from replay file

                ## wait for begin-marker to capture data
                if ($line =~ /<$frame_marker>/i) { # wait for start-of-frame marker
                        $found++;
                        push @data, $line;
                        next;
                        }

                if (!$found) {
                        next;
                        }

                ## wait for end-marker & return data
                if ($line =~ /<\/$frame_marker>/i) {
                        push @data, $line;
                        return \@data; # return xml data if end-of-frame marker found
                        }

                push @data, $line; # otherwise grab frame data
                }
        return \@data;
        }
__END__

##</code><code>##

<data>
  <string>1 some stuff</string>
  <string>1 some more stuff</string>
  <string>1 yet more stuff</string>
  <string>1 enough stuff</string>
</data>
<data>
  <string>2 some stuff</string>
  <string>2 some more stuff</string>
  <string>2 yet more stuff</string>
  <string>2 enough stuff</string>
</data>
<data>
  <string>3 some stuff</string>
  <string>3 some more stuff</string>
  <string>3 yet more stuff</string>
  <string>3 enough stuff</string>
</data>