kdhcp/leases/hardware_address.go

package leases

import (
	"bytes"
	"fmt"
	"strconv"
	"strings"
)

type HardwareAddress []byte

func (mac HardwareAddress) String() string {
	marshalled := []string{}
	for i := 0; i < len(mac); i++ {
		marshalled = append(marshalled, fmt.Sprintf("%02x", []byte(mac[i:i+1])))
	}

	return strings.Join(marshalled, ":")
}

func (mac HardwareAddress) MarshalText() ([]byte, error) {
	return []byte(mac.String()), nil
}

func (mac *HardwareAddress) UnmarshalText(b []byte) error {
	rb := bytes.Split(b, []byte(":"))
	for _, octet := range rb {
		n, err := strconv.ParseUint(string(octet), 16, 8)
		if err != nil {
			return err
		}

		*mac = append(*mac, uint8(n))
	}

	return nil
}

func (mac HardwareAddress) Match(other HardwareAddress) bool {
	return bytes.Equal(mac, other)
}