kml.pl: Can remove placemarks

kml.pl

@@ -13,6 +13,10 @@ my $xpc = XML::LibXML::XPathContext->new($dom);
 $xpc->registerNs('k', "http://earth.google.com/kml/2.2");
 
 my $mode = shift;
+unless(defined($mode))
+{
+    USAGE();
+}
 if ($mode eq 'add')
 {
     my ($name, $coordinates) = @ARGV;
@@ -26,7 +30,26 @@ if ($mode eq 'add')
 }
 elsif ($mode eq 'remove')
 {
-    say "Remove mode";
+    # say "Remove mode";
+    my ($name) = @ARGV;
+    unless (defined($name))
+    {
+        say "No place name provided to delete operation";
+        USAGE(1);
+    }
+    $name = to_id($name);
+    my ($placemark) = $xpc->findnodes("//k:Placemark[\@id=\"$name\"]");
+    if(defined($placemark))
+    {
+        $placemark->unbindNode();
+        print $dom->toString(1);
+    }
+    else
+    {
+        say "$name was not found in $filename";
+        exit(1);
+    }
+    # say $placemark->toString(1);
 }
 elsif ($mode eq 'set')
 {
@@ -34,6 +57,7 @@ elsif ($mode eq 'set')
 }
 else
 {
+    say "Invalid operation";
     USAGE(1);
 }
 
@@ -41,7 +65,7 @@ sub USAGE
 {
     my $code = shift;
     say "USAGE: ";
-    exit($code);
+    exit($code || 0);
 }
 sub add_empty_child
 {