Google Wallet Shipping UK, EU, Worldwide?

In the templates/defaults.php file, the function for setting shipping options is

function getShippingOptions($items) {
	$ship=array();
	$ship[]=array("name" => "USPS Standard Shipping", "price" => "5", "region" => "all");
	$ship[]=array("name" => "USPS Priority Shipping (USA Only)", "price" => "10", "region" => "USA");
	$ship[]=array("name" => "Global Priority (6-10 days)", "price" => "20", "region" => "NotUSA");

	return $ship;
}

Basically, it wants an array with shipping options, with each option providing a name, price and region. Currently the backend only supports ‘USA’ and ‘NotUSA’. The function that parses this array is in classes/google.php:

foreach($shipoptions as $soption) {
                        $gc .= "\n\t<flat-rate-shipping name=\"". $soption['name'] . "\">";
                        $gc .= "\n\t<price currency=\"".$options['currency']."\">".$soption['price']. "</price>";
                        $gc .= "\n\t<shipping-restrictions>";
                        $gc .= "\n\t\t<allowed-areas>";
                        if ($soption['region'] == "USA" ) {
                                $gc .= "\n\t\t<us-country-area country-area=\"ALL\"/>";
                        } else {
                                $gc .= "\n\t\t<world-area/>";
                        }
                        $gc .= "\n\t\t</allowed-areas>";
                        $gc .= "\n\t\t<excluded-areas>";
                        if ($soption['region'] == "NotUSA" ) {
                                $gc .= "\n\t\t<us-country-area country-area=\"ALL\"/>";
                        }
                        $gc .= "\n\t\t</excluded-areas>";
                        $gc .= "\n\t</shipping-restrictions>";
                        $gc .= "\n\t</flat-rate-shipping>";
                }

It is very easy for me to add a few other region options, assuming the google format supports them. Take a look at https://developers.google.com/checkout/developer/Google_Checkout_XML_API_Tag_Reference#tag_region and if you roughly outline what regions you want and how to structure the XML, I’ll add that to the backend class.

Take a look at SCABN 1.9.12 and look at the defaults.php example for setting google shipping options. Now you can pass an array with allowed-areas country codes and excluded area country codes. Should let you handle almost everything. Let me know if that works for you.