Vendor integration dependencies.

integration/vendor/github.com/docker/libcompose/yaml/external.go

@@ -0,0 +1,44 @@
+package yaml
+
+import (
+	"fmt"
+)
+
+// External represents an external network entry in compose file.
+// It can be a boolean (true|false) or have a name
+type External struct {
+	External bool
+	Name     string
+}
+
+// MarshalYAML implements the Marshaller interface.
+func (n External) MarshalYAML() (tag string, value interface{}, err error) {
+	if n.Name == "" {
+		return "", n.External, nil
+	}
+	return "", map[string]interface{}{
+		"name": n.Name,
+	}, nil
+}
+
+// UnmarshalYAML implements the Unmarshaller interface.
+func (n *External) UnmarshalYAML(tag string, value interface{}) error {
+	switch v := value.(type) {
+	case bool:
+		n.External = v
+	case map[interface{}]interface{}:
+		for mapKey, mapValue := range v {
+			switch mapKey {
+			case "name":
+				n.Name = mapValue.(string)
+			default:
+				// Ignore unknown keys
+				continue
+			}
+		}
+		n.External = true
+	default:
+		return fmt.Errorf("Failed to unmarshal External: %#v", value)
+	}
+	return nil
+}