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