uuid

package

v0.19.0 Latest Latest Go to latest Published: Feb 9, 2026 License: MIT Imports: 4 Imported by: 0

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Valid go.mod file
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Stable version
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Repository

github.com/muonsoft/validation

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Documentation ¶

Overview ¶

Package uuid is a port of https://github.com/gofrs/uuid with functions only for parsing UUID from string.

Index ¶

Constants
Variables
type UUID
- func CanonicalFromString(input string) (UUID, error)
- func FromString(input string) (UUID, error)

Constants ¶

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const (
	V1 byte // Version 1 (date-time and MAC address)

	V3 // Version 3 (namespace name-based)
	V4 // Version 4 (random)
	V5 // Version 5 (namespace name-based)
	V6 // Version 6 (k-sortable timestamp and random data, field-compatible with v1) [peabody draft]
	V7 // Version 7 (k-sortable timestamp and random data) [peabody draft]

)

UUID versions.

View Source

const (
	VariantNCS byte = iota
	VariantRFC4122
	VariantMicrosoft
	VariantFuture
)

UUID layout variants.

View Source

const Size = 16

Size of a UUID in bytes.

Variables ¶

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var (
	ErrTooShort               = errors.New("too short")
	ErrTooLong                = errors.New("too long")
	ErrInvalidHyphenPlacement = errors.New("invalid hyphen placement")
	ErrInvalid                = errors.New("invalid")
)

View Source

var Nil = UUID{}

Nil is the nil UUID, as specified in RFC-4122, that has all 128 bits set to zero.

Functions ¶

This section is empty.

Types ¶

type UUID ¶

type UUID [Size]byte

UUID is an array type to represent the value of a UUID, as defined in RFC-4122.

func CanonicalFromString ¶

func CanonicalFromString(input string) (UUID, error)

func FromString ¶

func FromString(input string) (UUID, error)

FromString returns a UUID parsed from the input string. Input is expected in a form accepted by UnmarshalText.

func (UUID) IsNil ¶

func (u UUID) IsNil() bool

IsNil returns if the UUID is equal to the nil UUID.

func (*UUID) UnmarshalText ¶

func (u *UUID) UnmarshalText(text []byte) error

UnmarshalText implements the encoding.TextUnmarshaler interface. Following formats are supported:

"6ba7b810-9dad-11d1-80b4-00c04fd430c8",
"{6ba7b810-9dad-11d1-80b4-00c04fd430c8}",
"urn:uuid:6ba7b810-9dad-11d1-80b4-00c04fd430c8"
"6ba7b8109dad11d180b400c04fd430c8"
"{6ba7b8109dad11d180b400c04fd430c8}",
"urn:uuid:6ba7b8109dad11d180b400c04fd430c8"

ABNF for supported UUID text representation follows:

URN := 'urn'
UUID-NID := 'uuid'

hexdig := '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' |
          'a' | 'b' | 'c' | 'd' | 'e' | 'f' |
          'A' | 'B' | 'C' | 'D' | 'E' | 'F'

hexoct := hexdig hexdig
2hexoct := hexoct hexoct
4hexoct := 2hexoct 2hexoct
6hexoct := 4hexoct 2hexoct
12hexoct := 6hexoct 6hexoct

hashlike := 12hexoct
canonical := 4hexoct '-' 2hexoct '-' 2hexoct '-' 6hexoct

plain := canonical | hashlike
uuid := canonical | hashlike | braced | urn

braced := '{' plain '}' | '{' hashlike  '}'
urn := URN ':' UUID-NID ':' plain

func (UUID) ValidVersion ¶

func (u UUID) ValidVersion(versions ...byte) bool

func (UUID) Variant ¶

func (u UUID) Variant() byte

Variant returns the UUID layout variant.

func (UUID) Version ¶

func (u UUID) Version() byte

Version returns the algorithm version used to generate the UUID.

Source Files ¶

View all Source files

uuid.go

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