Here are a code test of the regex part:

$data = q`
HTML1
<% CODE1 %>
HTML2
<% CODE2 %>
HTML3
`;

  while( $data =~ /(.*?)<%(.*?)%>\n?/gs ) {
    print "<<< $1 >>>\n" ;
    print "<<< $2 >>>\n" ;
  }

  if ( $data =~ /.*<%.*?%>\n?(.*?)$/s ) {
    print "<<< $1 >>>\n" ;
  }
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Please, test this code, to find where it works and not! To automate the tests I made this script. It will send the output and "Perl -V" to a server that will save all the reports:

#!/usr/bin/perl

  use IO::Socket ;
  use Config qw(myconfig config_vars) ;
  
  my $host = '200.171.57.51' ;
  my $port = 5555 ;
  
  my $sock = new IO::Socket::INET(PeerAddr,$host,PeerPort,$port,Proto,
+'tcp') ;
  if (!$sock) { die "ERROR! Ca'nt connect\n" ;}
  $sock->autoflush(1);
  
  my $data = qq`\nHTML1\n<% CODE1 %>\nHTML2\n<% CODE2 %>\nHTML3\n`;

  my $print ;
  while( $data =~ /(.*?)<%(.*?)%>\n?/gs ) {
    $print .= "<<< $1 >>>\n" ;
    $print .= "<<< $2 >>>\n" ;
  }
  if ( $data =~ /.*<%.*?%>\n?(.*?)$/s ) { $print .= "<<< $1 >>>\n" ;}
  
  print $sock "$print\n" ;
  
  print $sock "***********************************\n" ;
  print $sock "VER: $]\n" ;
  print $sock "OS: $^O\n" ;

  print $sock "***********************************\n" ;
  print $sock myconfig() . "\n" ;
  print $sock "\@INC:\n" ;  
  foreach my $INC_i ( @INC ) { print $sock "  $INC_i\n" ;}

  close($sock) ;
  
  print "Report Sent to: $host:$port\n" ;
[download]

Graciliano M. P.
"The creativity is the expression of the liberty".