Hi monks,
I am busying myself with cgi-fun and thought it sensible to add in
a few safe-guards so that if nothing is entered into the form, the user gets a polite message, not an internal server error.
Anyway, I thought this simple reg-exp would work (below). Can anyone suggest why
is might be going wrong.
Many thanks.
# snippet from script 1
print qq(<FORM METHOD="post" ACTION="http://localhost/~sm125/cgi-bin/f
+rontpage.cgi"><h3>Enter: </h3><INPUT TYPE="TEXT" NAME="box" SIZE="10"
+><h3>Enter: </h3><INPUT TYPE="text" NAME="value" SIZE="10"><INPUT TYP
+E="SUBMIT" value="go"></FORM>);
second script
# snippet from frontpage.cgi
#!/biol/programs/perl/bin/perl -w
use strict;
use CGI qw(:standard);
my $cgi;
$cgi = new CGI;
use CGI::Carp qw(fatalsToBrowser);
my $box = $cgi->param('box');
my $value = $cgi->param('value');
if (($box !~ /\w+/) && ($value !~ /\w+/)) {
print "You haven't entered anything on the form";
print STDOUT $cgi->end_html;
exit (0);
}
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