common

Documentation

Overview

Package common contains various helper functions.

Index

• Constants
• Variables
• func CopyBytes(b []byte) (copiedBytes []byte)
• func FromHex(s string) ([]byte, error)
• func GetNtpTime(host string) (time.Time, error)
• func GetPointer(id int64) (interface{}, error)
• func GetRandBytes(min, max int) []byte
• func GetRandPrintString(min, max int) string
• func GetRandString(length int) string
• func GetRealTime(hosts []string) time.Time
• func GetRealTimeRetry(hosts []string, retry int) time.Time
• func HashHex(d []byte) string
• func IsHex(str string) bool
• func MaxInt32(left, right int32) int32
• func MinInt32(left, right int32) int32
• func RemovePointer(id int64)
• func Rimp160(b []byte) []byte
• func Sha256(b []byte) []byte
• func Sha2Sum(b []byte) []byte
• func Sha3(b []byte) []byte
• func StorePointer(p interface{}) int64
• func ToHex(b []byte) string
• type Hash
  • func BytesToHash(b []byte) Hash
  • func HexToHash(s string) Hash
  • func (h Hash) Bytes() []byte
  • func (h *Hash) SetBytes(b []byte)

Constants

const Sha256Len = 32

Sha256Len sha256 bytes len

Variables

var ErrNetWorkDealy = errors.New("ErrNetWorkDealy")

ErrNetWorkDealy error

var ErrPointerNotFound = errors.New("ErrPointerNotFound")

ErrPointerNotFound 指针没有找到

Functions

func CopyBytes

func CopyBytes(b []byte) (copiedBytes []byte)

CopyBytes Returns an exact copy of the provided bytes

func FromHex

func FromHex(s string) ([]byte, error)

FromHex hex -> []byte

func GetNtpTime

func GetNtpTime(host string) (time.Time, error)

GetNtpTime 利用服务器返回的 t2, t3, 和本地的 t1, t4 校准时间 delt = ((t2-t1)+(t3-t4))/2 current = t4 + delt

func GetPointer

func GetPointer(id int64) (interface{}, error)

GetPointer 删除指针

func GetRandBytes

func GetRandBytes(min, max int) []byte

GetRandBytes 获取随机字节

func GetRandPrintString

func GetRandPrintString(min, max int) string

GetRandPrintString 获取随机可打印字符串

func GetRandString

func GetRandString(length int) string

GetRandString 获取随机字符串

func GetRealTime

func GetRealTime(hosts []string) time.Time

GetRealTime 获取实际时间

func GetRealTimeRetry

func GetRealTimeRetry(hosts []string, retry int) time.Time

GetRealTimeRetry 重试获取实际时间

func HashHex

func HashHex(d []byte) string

HashHex []byte -> hex

func IsHex

func IsHex(str string) bool

IsHex 是否是hex字符串

func MaxInt32

func MaxInt32(left, right int32) int32

MaxInt32 max

func MinInt32

func MinInt32(left, right int32) int32

MinInt32 min

func RemovePointer

func RemovePointer(id int64)

RemovePointer 删除指针

func Rimp160

func Rimp160(b []byte) []byte

Rimp160 Returns hash: RIMP160( SHA256( data ) ) Where possible, using RimpHash() should be a bit faster

func Sha256

func Sha256(b []byte) []byte

Sha256 加密

func Sha2Sum

func Sha2Sum(b []byte) []byte

Sha2Sum Returns hash: SHA256( SHA256( data ) ) Where possible, using ShaHash() should be a bit faster

func Sha3

func Sha3(b []byte) []byte

Sha3 加密

func StorePointer

func StorePointer(p interface{}) int64

StorePointer 保存指针返回int64

func ToHex

func ToHex(b []byte) string

ToHex []byte -> hex

Types

type Hash

type Hash [Sha256Len]byte

Hash type

func BytesToHash

func BytesToHash(b []byte) Hash

BytesToHash []byte -> hash

func HexToHash

func HexToHash(s string) Hash

HexToHash hex -> hash

func (Hash) Bytes

func (h Hash) Bytes() []byte

Bytes Get the []byte representation of the underlying hash

func (*Hash) SetBytes

func (h *Hash) SetBytes(b []byte)

SetBytes Sets the hash to the value of b. If b is larger than len(h), 'b' will be cropped (from the left).