utils

Documentation

Index

• Variables
• func AppDataDir() string
• func AssertEquals(t testing.TB, actual interface{}, expected interface{})
• func AssertNotEquals(t testing.TB, actual interface{}, expected interface{})
• func AssertSame(t testing.TB, actual interface{}, expected interface{})
• func ByteToFloat64(bytes []byte) float64
• func BytesToHex(byteSlice []byte) string
• func BytesToUint32(src []byte) uint32
• func BytesToUint32Arrary(src []byte) []uint32
• func Contain(obj interface{}, target interface{}) bool
• func CurrentTimestamp() uint32
• func DecodeUint32(bytes []byte, cnt uint32) ([]uint32, error)
• func DelStringFromSlice(val string, slice *[]string)
• func Deserialize(data []byte, obj interface{}) error
• func FileExist(filePath string) bool
• func Float64ToByte(float float64) []byte
• func HexToBytes(s string) []byte
• func IsDirEmpty(path string) (bool, error)
• func IsDirExist(path string) (bool, error)
• func IsDirMissingOrEmpty(path string) (bool, error)
• func MinimizeSilce(src []byte) []byte
• func OpenDir(dir string) (string, error)
• func OpenFile(path string) (*os.File, error)
• func ReadVarInt(r io.Reader) (uint64, error)
• func Serialize(obj interface{}) []byte
• func Uint32ArrayToBytes(arrary []uint32) []byte
• func Uint32ToBytes(src uint32) []byte
• func UnmarshalFixedText(input, out []byte) error
• func VarDecode(r io.Reader, val interface{}) error
• func VarEncode(w io.Writer, val interface{})
• func VarInt(n uint64) []byte
• func WriteVarInt(w io.Writer, count uint64)
• func ZeroMemory(s interface{})
• type Bytes
  • func (b Bytes) MarshalText() ([]byte, error)
  • func (b *Bytes) UnmarshalJSON(input []byte) error
  • func (b *Bytes) UnmarshalText(input []byte) error
• type Times
  • func (t Times) Len() int
  • func (t Times) Less(i, j int) bool
  • func (t Times) Swap(i, j int)

Variables

var (
	ErrNonString = errors.New("cannot unmarshal non-string as hex data")
	ErrOddLength = errors.New("hex string has odd length")
	ErrSyntax    = errors.New("invalid hex")
)

Functions

func AppDataDir

func AppDataDir() string

AppDataDir returns a default data directory for the databases

func AssertEquals

func AssertEquals(t testing.TB, actual interface{}, expected interface{})

func AssertNotEquals

func AssertNotEquals(t testing.TB, actual interface{}, expected interface{})

func AssertSame

func AssertSame(t testing.TB, actual interface{}, expected interface{})

func ByteToFloat64

func ByteToFloat64(bytes []byte) float64

func BytesToHex

func BytesToHex(byteSlice []byte) string

func BytesToUint32

func BytesToUint32(src []byte) uint32

func BytesToUint32Arrary

func BytesToUint32Arrary(src []byte) []uint32

func Contain

func Contain(obj interface{}, target interface{}) bool

func CurrentTimestamp

func CurrentTimestamp() uint32

func DecodeUint32

func DecodeUint32(bytes []byte, cnt uint32) ([]uint32, error)

func DelStringFromSlice

func DelStringFromSlice(val string, slice *[]string)

func Deserialize

func Deserialize(data []byte, obj interface{}) error

Deserialize deserializes bytes to object

func FileExist

func FileExist(filePath string) bool

FileExist determines whether a file exists

func Float64ToByte

func Float64ToByte(float float64) []byte

func HexToBytes

func HexToBytes(s string) []byte

func IsDirEmpty

func IsDirEmpty(path string) (bool, error)

IsDirEmpty determines whether a directory is empty

func IsDirExist

func IsDirExist(path string) (bool, error)

IsDirExist determines whether a directory exists

func IsDirMissingOrEmpty

func IsDirMissingOrEmpty(path string) (bool, error)

IsDirMissingOrEmpty determines whether a directory is empty or missing

func MinimizeSilce

func MinimizeSilce(src []byte) []byte

func OpenDir

func OpenDir(dir string) (string, error)

OpenDir opens or creates a dir If the dir already exists, open it . If it does not, It will create the file with mode 0700.

func OpenFile

func OpenFile(path string) (*os.File, error)

OpenFile opens or creates a file If the file already exists, open it . If it does not, It will create the file with mode 0644.

func ReadVarInt

func ReadVarInt(r io.Reader) (uint64, error)

ReadVarInt decodes varint and returns real length

func Serialize

func Serialize(obj interface{}) []byte

Serialize serializes an object to bytes

func Uint32ArrayToBytes

func Uint32ArrayToBytes(arrary []uint32) []byte

func Uint32ToBytes

func Uint32ToBytes(src uint32) []byte

func UnmarshalFixedText

func UnmarshalFixedText(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.

func VarDecode

func VarDecode(r io.Reader, val interface{}) error

VarDecode decodes the data to val, val mustbe pointer

func VarEncode

func VarEncode(w io.Writer, val interface{})

VarEncode encodes the input data TODO: val support all types

func VarInt

func VarInt(n uint64) []byte

VarInt converts n to varint bytes the raw protocol: https://en.bitcoin.it/wiki/Protocol_documentation#Variable_length_integer

func WriteVarInt

func WriteVarInt(w io.Writer, count uint64)

WriteVarInt writes varint bytes to stream

func ZeroMemory

func ZeroMemory(s interface{})

ZeroMemory erases a slice memory

Types

type Bytes

type Bytes []byte

Bytes marshals/unmarshals as a JSON string .

func (Bytes) MarshalText

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

MarshalText implements encoding.TextMarshaler

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.

type Times

type Times []uint32

func (Times) Len

func (t Times) Len() int

func (Times) Less

func (t Times) Less(i, j int) bool

func (Times) Swap

func (t Times) Swap(i, j int)