utils

func Capacity ¶ added in v0.7.7

func Capacity(a, b net.IP) *big.Int

Capacity returns the absolute number of IPs between a and b. 0 is returned if a and b are of different IP families, or any of those two IPs is invalid.

func CheckNotEmpty ¶ added in v0.6.0

func CheckNotEmpty(name, input string) error

func Cmp ¶ added in v0.7.6

func Cmp(a, b net.IP) int

Cmp compares two IPs, returning the usual ordering: a < b : -1 a == b : 0 a > b : 1 incomparable : -2

func DeepCopyStringSlice ¶ added in v0.5.0

func DeepCopyStringSlice(in []string) []string

func DeepEqualStringSlice ¶ added in v0.4.0

func DeepEqualStringSlice(a []string, b []string) bool

func LastIP ¶ added in v0.3.0

func LastIP(subnet *net.IPNet) net.IP

LastIP Determine the last IP of a subnet, excluding the broadcast if IPv4

func MinUint32 ¶ added in v0.6.0

func MinUint32(a, b uint32) uint32

func Network ¶ added in v0.7.6

func Network(ipn *net.IPNet) *net.IPNet

Network masks off the host portion of the IP, if IPNet is invalid, return nil

func NextIP ¶ added in v0.6.0

func NextIP(ip net.IP) net.IP

NextIP returns IP incremented by 1, if IP is invalid, return nil

func NormalizedIP ¶

func NormalizedIP(ip string) string

NormalizedIP If IP is valid, return itself otherwise empty string

func ParseBoolOrDefault ¶

func ParseBoolOrDefault(in string, defaultValue bool) bool

func PickFirstNonEmptyString ¶

func PickFirstNonEmptyString(ss ...string) string

func PrevIP ¶ added in v0.7.6

func PrevIP(ip net.IP) net.IP

PrevIP returns IP decremented by 1, if IP is invalid, return nil

func StringSliceToMap ¶

func StringSliceToMap(in []string) (out map[string]struct{})

func StringToIPNet ¶

func StringToIPNet(in string) *net.IPNet

func ToDNSFormat ¶ added in v0.5.0

func ToDNSFormat(ip net.IP) string

func ValidateIP ¶ added in v0.6.0

func ValidateIP(ip string) error

func ValidateIPv4 ¶ added in v0.6.0

func ValidateIPv4(ip string) error

func ValidateIPv6 ¶ added in v0.6.0

func ValidateIPv6(ip string) error