I am trying to use Filter::Simple to filter some code, specifically in the __DATA__ section. I followed the doc in Filter::Simple, and was able to get it to modify stuff in the __DATA__ section. Problem is that in my original code with __DATA__ (which has been filtered), the DATA now seems to have been processed already, which is a big problem.

Here is my filter:

package F;

use strict;
use warnings;
use Filter::Simple;

FILTER {
    s/FOO/bar/g;
    # print qq(>>>\n$_<<<\n); # uncomment to see changed src
  };
  #"";

1;

Here's my sample program, filter commented out:

#use F;

use strict;
use warnings;

print "FOO is good\n";
while (<DATA>) {
    print;
}

__DATA__
Here is my FOO data.
No FOO here.


Run it, and I see this output:

% perl U.pl
FOO is good
Here is my FOO data.
No FOO here.

Now, uncomment the "use F;", and I see this:

% perl U.pl
bar is good
Here is my FOO data.
No FOO here.

Note that no text was changed in the DATA part. Now, uncomment the "" 
+line in the filter, so my filter is now this:

package F;

use strict;
use warnings;
use Filter::Simple;

FILTER {
    s/FOO/bar/g;
    # print qq(>>>\n$_<<<\n); # uncomment to see changed src
 }
 "";

1;

Rerun, and I get this:

% perl U.pl
bar is good
[download]

Now, in filter, if you uncomment the print line, you will see that indeed the text is being changed. But apparently, since the __DATA__ block has already been read once, my program no longer sees it.

This is not good. Does anyone have a suggestion? After the filter runs (which I WANT to modify DATA area), I need to still be able to read data. This is for an application in Inline::C, by the way.

Any help/suggestions is much appreciated.

Thanks!