Move deps from _workspace/ to vendor/

godep restore
pushd $GOPATH/src/github.com/appc/spec
git co master
popd
go get go4.org/errorutil
rm -rf Godeps
godep save ./...
git add vendor
git add -f $(git ls-files --other vendor/)
git co -- Godeps/LICENSES Godeps/.license_file_state Godeps/OWNERS

vendor/github.com/rackspace/gophercloud/openstack/common/extensions/results.go

@@ -0,0 +1,65 @@
+package extensions
+
+import (
+	"github.com/mitchellh/mapstructure"
+	"github.com/rackspace/gophercloud"
+	"github.com/rackspace/gophercloud/pagination"
+)
+
+// GetResult temporarily stores the result of a Get call.
+// Use its Extract() method to interpret it as an Extension.
+type GetResult struct {
+	gophercloud.Result
+}
+
+// Extract interprets a GetResult as an Extension.
+func (r GetResult) Extract() (*Extension, error) {
+	if r.Err != nil {
+		return nil, r.Err
+	}
+
+	var res struct {
+		Extension *Extension `json:"extension"`
+	}
+
+	err := mapstructure.Decode(r.Body, &res)
+
+	return res.Extension, err
+}
+
+// Extension is a struct that represents an OpenStack extension.
+type Extension struct {
+	Updated     string        `json:"updated" mapstructure:"updated"`
+	Name        string        `json:"name" mapstructure:"name"`
+	Links       []interface{} `json:"links" mapstructure:"links"`
+	Namespace   string        `json:"namespace" mapstructure:"namespace"`
+	Alias       string        `json:"alias" mapstructure:"alias"`
+	Description string        `json:"description" mapstructure:"description"`
+}
+
+// ExtensionPage is the page returned by a pager when traversing over a collection of extensions.
+type ExtensionPage struct {
+	pagination.SinglePageBase
+}
+
+// IsEmpty checks whether an ExtensionPage struct is empty.
+func (r ExtensionPage) IsEmpty() (bool, error) {
+	is, err := ExtractExtensions(r)
+	if err != nil {
+		return true, err
+	}
+	return len(is) == 0, nil
+}
+
+// ExtractExtensions accepts a Page struct, specifically an ExtensionPage struct, and extracts the
+// elements into a slice of Extension structs.
+// In other words, a generic collection is mapped into a relevant slice.
+func ExtractExtensions(page pagination.Page) ([]Extension, error) {
+	var resp struct {
+		Extensions []Extension `mapstructure:"extensions"`
+	}
+
+	err := mapstructure.Decode(page.(ExtensionPage).Body, &resp)
+
+	return resp.Extensions, err
+}