In the past I've done a lot of (successful) command-line Perl debugging using syntax such as
perl -d:ptkdb foo.cgi "PARAM1=val1&PARAM2=val2"
where PARAM1 and PARAM2 are fields in the CGI form which invokes foo.cgi when the user presses the Submit button.

Now I would like to do the same thing, but two of the arguments are uploaded files, i.e. there's an HTML form which looks like: 

<FORM ENCTYPE="multipart/form-data" ACTION="./foo.cgi" METHOD="POST">
Protease: <SELECT NAME="PARAM1">
      <OPTION SELECTED>trypsin</OPTION>
      <OPTION>pepsin</OPTION>
      <OPTION>none</OPTION>
 </SELECT><br> 
Sort output by: <SELECT NAME="PARAM2">
      <OPTION VALUE="mw" SELECTED>Molecular weight</OPTION>
      <OPTION VALUE="pos">Position</OPTION>
</SELECT><br> 

<p> Please select an OBSERVED spectrum file to upload: <BR> <INPUT TYP
+E="FILE" NAME="MEASURED_SPECTRUM"> <p>

<p> Please select a protein sequence file to upload: <BR> <INPUT TYPE=
+"FILE" NAME="SEQUENCE"> <p>
<INPUT TYPE="submit"> </FORM>

[download]
and on the CGI side we have code such as: 
my $q = new CGI;

$fh1 = $q->param('MEASURED_SPECTRUM'); # these are really file-handles
$fh2 = $q->param('SEQUENCE');
...

while (<$fh1>) {
...
}
...
while (<$fh2>) {
...
}

[download]
Question: how can I invoke Perl from the command-line so that these file-handles are properly initialized?
Bonus question: In the (non-debug) CGI environment, is there any way to learn the name of the file which was uploaded? In the case of this program, the filename carries some semantic value.

In reply to CGI.pm debugging with TYPE=FILE & ENCTYPE="multipart/form-data" by jae_63

Title:
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