util

Documentation

Overview

Package util provides common utility functions.

Index

• Variables
• func Base64Decode(dst, src []byte) error
• func Base64Encode(src []byte) []byte
• func Encode(b []byte) string
• func FromHex(s string) []byte
• func Uint64ToBytesBigEndian(i uint64) []byte
• func UnmarshalFixedJSON(typ reflect.Type, input, out []byte) error
• func UnmarshalFixedText(typename string, input, out []byte) error
• type Bytes
  • func (b Bytes) MarshalText() ([]byte, error)
  • func (b Bytes) String() string
  • func (b *Bytes) UnmarshalJSON(input []byte) error
  • func (b *Bytes) UnmarshalText(input []byte) error

Variables

var (
	ErrSyntax        = errors.New("invalid hex string")
	ErrMissingPrefix = errors.New("hex string without 0x prefix")
	ErrOddLength     = errors.New("hex string of odd length")
	ErrUint64Range   = errors.New("hex number > 64 bits")
)

Errors.

Functions

func Base64Decode

func Base64Decode(dst, src []byte) error

func Base64Encode

func Base64Encode(src []byte) []byte

func Encode

func Encode(b []byte) string

Encode encodes b as a hex string with 0x prefix.

func FromHex

func FromHex(s string) []byte

FromHex returns the bytes represented by the hexadecimal string s. Parameter s may be prefixed with "0x".

func Uint64ToBytesBigEndian

func Uint64ToBytesBigEndian(i uint64) []byte

Uint64ToBytesBigEndian returns the byte representation of a uint64, using big endian encoding (which is not the default for spacemesh).

func UnmarshalFixedJSON

func UnmarshalFixedJSON(typ reflect.Type, input, out []byte) error

UnmarshalFixedJSON decodes the input as a string with 0x prefix. The length of out determines the required input length. This function is commonly used to implement the UnmarshalJSON method for fixed-size types.

func UnmarshalFixedText

func UnmarshalFixedText(typename string, input, out []byte) error

UnmarshalFixedText decodes the input as a string with 0x prefix. The length of out determines the required input length. This function is commonly used to implement the UnmarshalText method for fixed-size types.

Types

type Bytes

type Bytes []byte

Bytes marshals/unmarshals as a JSON string with 0x prefix. The empty slice marshals as "0x".

func (Bytes) MarshalText

func (b Bytes) MarshalText() ([]byte, error)

MarshalText implements encoding.TextMarshaler.

func (Bytes) String

func (b Bytes) String() string

String returns the hex encoding of b.

func (*Bytes) UnmarshalJSON

func (b *Bytes) UnmarshalJSON(input []byte) error

UnmarshalJSON implements json.Unmarshaler.

func (*Bytes) UnmarshalText

func (b *Bytes) UnmarshalText(input []byte) error

UnmarshalText implements encoding.TextUnmarshaler.