#!/usr/bin/perl

# https://perlmonks.org/?node_id=1224208

use strict;
use warnings;
use Data::Dump 'dd';

my $file1 = <<END;
    name    foo
    num     111 222 333 444
    name    jack
    num     999 111 222 333
    num     333 444 555 777
END

my $file2 = <<END;
    name    jack
    num     999 111 222 333
    num     333 444 555 777
    name    foo
    num     666 222 333 444
END

my %hash1 = gethash($file1);
my %hash2 = gethash($file2);

#dd 'file1', \%hash1, 'file2', \%hash2;

print "\t\tFile1\t\t\t\t\tFile2\n";
print "Name\tX1\tY1\tX2\tY2\t\tX1\tY1\tX2\tY2\n";

for my $key ( keys %hash1 )
  {
  my $name = $key;
  for ( match( $hash1{$key}, $hash2{$key} ) )
    {
    print "$name\t$_\t\t$_\n";
    $name = '';
    }
  }

sub match
  {
  my ($one, $two) = @_;
  my @same;
  for my $item (@$one)
    {
    push @same, grep $item eq $_, @$two;
    }
  return @same;
  }

sub gethash
  {
  local $_ = shift;
  s/^\s+//gm;
  s/[ \t]+/\t/g;
  my %hash;
  while( /^name\s+(\S+)\n(num.*\n)*/gm )
    {
    my $name = $1;
    $hash{$name} = [ $& =~ /^num\s*(.*)/gm ];
    }
  return %hash;
  }