+sub addCommand {
+ my ($command, $list, $func) = @_;
+ $commands{$command} = {fun => $func, acc => $list};
+}
+
+sub parseCommand {
+ my ($msg,$channel) = @_;
+ if ($msg =~ /^(\w+)(?: (.+))?$/){
+ my $c = $1;
+ my $args = $2;
+ my @k = keys %commands;
+ if (exists $commands{$c}){
+ my $a = $commands{$c}->{acc};
+ my $b = (exists $channels{lc $channel} ? $channels{lc $channel} : ['all']);
+ if (intersect($a,$b) > 0){
+ $commands{$c}->{fun}->($args);
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+sub intersect {
+ my ($a, $b) = @_;
+ my %union;
+ foreach my $e (@{$a}) { $union{$e} = 1 }
+
+ my %isect;
+ foreach my $e (@{$b}) {
+ $isect{$e} = 1 if ( exists $union{$e} )
+ }
+ return keys %isect;
+}
+