topic Perl CGI: Source html-page in Operating System - HP-UX

Perl CGI: Source html-page

David_246 — Tue, 04 Nov 2003 03:01:40 GMT

Hi,

I have a CGI-script that needs to print an html-page containing variables dependent on the choise you make.
Right now I do this using :

#!/opt/per/bin/perl

if ($submit) {
open(FH, "< $htmlfile");
my @contents=;
close(FH);

print "Content type text/html; \n\n";
print "Contents";

This does print my html-page, but does not interpeted the variables($value) as :

Is there a way to source the html-file inside the perl/cgi script, so the $variables are interpeted correct?

Thanks a lot for your help in advance !!!

Regs David

The reason for this is that other people should be able to create html-pages and only need to use specific "names" and a form action should be taken. I will only do the perly thing than.

Re: Perl CGI: Source html-page

Mark Grant — Tue, 04 Nov 2003 03:09:52 GMT

You can use the "eval" approach assuming the variable is already set up in your script.

Something like this

while($line=){
$line =~ s/\$([\w\]\[\$]+)/insertvar($1)/eg;
print $line;
}

And then a function called insertvar that does this

$result=eval(\$$1);
return($result);

I think this is what your're after.

Re: Perl CGI: Source html-page

David_246 — Tue, 04 Nov 2003 03:27:19 GMT

Hi,

It does not work. I did what you said :

open(FF, "< $file_v");
$line =~ s/\$([\w\]\[\$]+)/insertvar($1)/eg;
print $line;
close(FF);

And I added another subroutine :

sub insertvar() {
$result=eval(\$$1);
return($result);
}

I don't seem to get it. Please help.

Regs David

Re: Perl CGI: Source html-page

Mark Grant — Tue, 04 Nov 2003 03:51:28 GMT

David,

Can we just make sure we are trying to solve the same problem.

I am assuming that within your script are some variables, already defined and that the html file contains the text $some_variable_name here and there which you want to replace with the corresponding variable already set within the perl script and then print.

Re: Perl CGI: Source html-page

David_246 — Tue, 04 Nov 2003 03:59:02 GMT

Hi Mark,

That is a 100% true. Like the example of says.

The problem is that nothing is printed anymore. With the @contents at least something got printed :)

Regs David

Re: Perl CGI: Source html-page

Mark Grant — Tue, 04 Nov 2003 04:00:38 GMT

Actually, the code doesn't quite work as expected but that because I didn't test it :)

Here is the code taht does what I think you want to do. Note the bracket has moved in the "s/etc etc etc/eg" bit and I simplified the eval.

#!/usr/bin/perl

$myvariable="HELLO THERE";

open FF,"
while($line=){
$line =~ s/(\$[\w\]\[\$]+)/insertvar($1)/eg;
print "$line";
}

sub insertvar(){
return(eval($1));
}

Re: Perl CGI: Source html-page

Mark Grant — Tue, 04 Nov 2003 04:07:27 GMT

For some reason I thought you couldn't have the eval in that search but it seems you can so you can simplify it more but getting rid of the function altogether as in

$line =~ s/(\$[\w\]\[\$]+)/eval($1)/eg;

Re: Perl CGI: Source html-page

David_246 — Tue, 04 Nov 2003 04:40:52 GMT

Mark,

You are wonderfull !! (ahum, am already married)
This works terrific :

open(FF, "< $file_v");
while($line=) {
$line =~ s/(\$[\w\]\[\$]+)/eval($1)/eg;
print $line;
}
close(FF);

Thanks a lot for your time in it!!

Regs David