+# enter the spot for dup checking and return true if it is already a dup
+sub dup
+{
+ my ($freq, $call, $d, $text, $by) = @_;
+
+ # dump if too old
+ return 2 if $d < $main::systime - $dupage;
+
+ # turn the time into minutes (should be already but...)
+ $d = int ($d / 60);
+ $d *= 60;
+
+ $freq = sprintf "%.1f", $freq; # normalise frequency
+ $call = substr($call, 0, 12) if length $call > 12;
+
+ # quick test now for simple case
+ my $sdupkey = "X$freq|$call|$d|$by";
+ return 1 if DXDupe::find($sdupkey);
+
+ chomp $text;
+ $text =~ s/\%([0-9A-F][0-9A-F])/chr(hex($1))/eg;
+ $text = substr($text, 0, $duplth) if length $text > $duplth;
+ unpad($text);
+ $text = pack("C*", map {$_ & 127} unpack("C*", $text));
+ $text =~ s/[^a-zA-Z0-9]//g;
+ for (-60, -120, -180, -240, 0, 60, 120, 180, 240, 300) {
+ my $dt = $d - $_;
+ my $ldupkey = "X$freq|$call|$dt|\L$text";
+ my $sdupkey = "X$freq|$call|$dt|$by";
+ return 1 if DXDupe::find($ldupkey) || DXDupe::find($sdupkey);
+ }
+ my $ldupkey = "X$freq|$call|$d|\L$text";
+ $sdupkey = "X$freq|$call|$d|$by";
+ DXDupe::add($ldupkey, $main::systime+$dupage);
+ DXDupe::add($sdupkey, $main::systime+$dupage);
+ return 0;
+}
+
+sub listdups
+{
+ return DXDupe::listdups('X', $dupage, @_);
+}