dim/types/zone.go

package types

import (
	"bytes"
	"fmt"
)

type (
	// Zone represents the name of a zone. A zone must end with a `.`.
	ZoneName string
)

func (z *ZoneName) UnmarshalJSON(in []byte) error {
	in = bytes.Trim(in, `"`)

	if in[len(in)-1] != '.' {
		return fmt.Errorf("not a valid zone name")
	}
	*z = ZoneName(in)
	return nil
}

func (z ZoneName) String() string {
	return string(z)
}