common

package
v1.0.2 Latest Latest
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 Go to latest Published: Aug 30, 2019 License: GPL-3.0, GPL-3.0 Imports: 22 Imported by: 2

Documentation

Overview

Package common contains various helper functions.

Index

Constants

View Source 
const (
	AddressLength = 21 //byte[0:20] is hash160, byte[20] is AddressType
)
View Source 
const (
	HashLength = 32
)
View Source 
const MaxHashStringSize = HashLength * 2

Variables

View Source 
var (
	Big1   = big.NewInt(1)
	Big2   = big.NewInt(2)
	Big3   = big.NewInt(3)
	Big0   = big.NewInt(0)
	Big32  = big.NewInt(32)
	Big256 = big.NewInt(256)
	Big257 = big.NewInt(257)
)

Common big integers often used

View Source 
var ErrHashStrSize = fmt.Errorf("max hash string length is %v bytes", MaxHashStringSize)

Functions

func AbsolutePath 

func AbsolutePath(Datadir string, filename string) string

func Bytes2Hex 

func Bytes2Hex(d []byte) string

func CheckExists 

func CheckExists(search Hash, array []Hash) int

func CopyBytes 

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

Copy bytes

Returns an exact copy of the provided bytes

func Decode 

func Decode(dst *Hash, src string) error

Decode decodes the byte-reversed hexadecimal string encoding of a Hash to a destination.

func DecodeNumber 

func DecodeNumber(key []byte) uint64

func DecodeNumberUint16 

func DecodeNumberUint16(key []byte) uint16

func DecodeNumberUint32 

func DecodeNumberUint32(key []byte) uint32

func DoubleHashB 

func DoubleHashB(b []byte) []byte

DoubleHashB calculates hash(hash(b)) and returns the resulting bytes.

func EmptyHash 

func EmptyHash(h Hash) bool

func EncodeNumber 

func EncodeNumber(number uint64) []byte

encodeNumber encodes a number as big endian uint64

func EncodeNumberUint16 

func EncodeNumberUint16(number uint16) []byte

func EncodeNumberUint32 

func EncodeNumberUint32(number uint32) []byte

encodeNumber encodes a number as big endian uint64

func FromHex 

func FromHex(s string) []byte

func GetAbsPath 

func GetAbsPath(filename string) string

func GetWorkPath 

func GetWorkPath() string

func Hex2Bytes 

func Hex2Bytes(str string) []byte

func Hex2BytesFixed 

func Hex2BytesFixed(str string, flen int) []byte

func IsExisted 

func IsExisted(filePath string) bool

func IsHexAddress 

func IsHexAddress(s string) bool

IsHexAddress verifies whether a string can represent a valid hex-encoded PalletOne address or not.

func IsSystemContractAddress 

func IsSystemContractAddress(addr []byte) bool

func IsValidAddress 

func IsValidAddress(s string) bool

func LeftPadBytes 

func LeftPadBytes(slice []byte, l int) []byte

func LoadJSON 

func LoadJSON(file string, val interface{}) error

LoadJSON reads the given file and unmarshals its content.

func MakeName 

func MakeName(name, version string) string

MakeName creates a node name that follows the ethereum convention for such names. It adds the operation system name and Go runtime version the name.

func PrintDepricationWarning 

func PrintDepricationWarning(str string)

PrintDepricationWarning prinst the given string in a box using fmt.Println.

func Report 

func Report(extra ...interface{})

Report gives off a warning requesting the user to submit an issue to the github tracker.

func RightPadBytes 

func RightPadBytes(slice []byte, l int) []byte

func Str2Int64 

func Str2Int64(str string) int64

str to uint64

func Str2Uint64 

func Str2Uint64(str string) uint64

func ToHex 

func ToHex(b []byte) string

func Uint642Str 

func Uint642Str(num uint64) string

Types

type Address 

type Address [AddressLength]byte

func BytesListToAddressList 

func BytesListToAddressList(b []byte) []Address

func BytesToAddress 

func BytesToAddress(b []byte) Address

func HexToAddress 

func HexToAddress(s string) Address

func NewAddress 

func NewAddress(hash160 []byte, ty AddressType) Address

func PubKeyHashHexToAddress 

func PubKeyHashHexToAddress(s string) Address

func StringToAddress 

func StringToAddress(a string) (Address, error)

将一个字符串格式的Address转换为Address对象

func StringToAddressGodBlessMe 

func StringToAddressGodBlessMe(a string) Address

func (Address) Big 

func (a Address) Big() *big.Int

func (Address) Bytes 

func (a Address) Bytes() []byte

Return account 20 bytes without address type

func (Address) Bytes21 

func (a Address) Bytes21() []byte

Return address all 21 bytes, you can use SetBytes function to get Address object

func (*Address) Equal 

func (a *Address) Equal(b Address) bool

YiRan Returns true when the contents of the two Address are exactly the same

func (Address) Format 

func (a Address) Format(s fmt.State, c rune)

Format implements fmt.Formatter, forcing the byte slice to be formatted as is, without going through the stringer interface used for logging.

func (*Address) GetType 

func (a *Address) GetType() AddressType

func (Address) Hash 

func (a Address) Hash() Hash

func (Address) Hex 

func (a Address) Hex() string

func (*Address) IsSystemContractAddress 

func (a *Address) IsSystemContractAddress() bool

如果是合约地址，那么是不是一个系统合约地址？

func (*Address) IsZero 

func (a *Address) IsZero() bool

func (*Address) Less 

func (a *Address) Less(b Address) bool

func (*Address) MarshalJSON 

func (a *Address) MarshalJSON() ([]byte, error)

func (Address) MarshalText 

func (a Address) MarshalText() ([]byte, error)

MarshalText returns the hex representation of a.

func (*Address) Set 

func (a *Address) Set(other Address)

Sets a to other

func (*Address) SetBytes 

func (a *Address) SetBytes(b []byte)

Sets the address to the value of b. If b is larger than len(a) it will panic

func (*Address) SetString 

func (a *Address) SetString(s string) error

Set string `s` to a. If s is larger than len(a) it will panic

func (Address) Str 

func (a Address) Str() string

Get the string representation of the underlying address

func (Address) String 

func (a Address) String() string

String implements the stringer interface and is used also by the logger.

func (*Address) UnmarshalJSON 

func (a *Address) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*Address) UnmarshalText 

func (a *Address) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

func (Address) Validate 

func (a Address) Validate() (AddressType, error)

type AddressType 

type AddressType byte
const (
	ErrorAddress  AddressType = 0xff
	PublicKeyHash AddressType = 0
	ScriptHash    AddressType = 5
	ContractHash  AddressType = 28
)

type Addresses 

type Addresses []Address

Address represents the 35 byte address of an PalletOne account. for personal address, start with P1 (version 0), script address start with P3(version 5), contract address start with Pc(version 28)

func (Addresses) Len 

func (a Addresses) Len() int

func (Addresses) Less 

func (a Addresses) Less(i, j int) bool

func (Addresses) Swap 

func (a Addresses) Swap(i, j int)

type Hash 

type Hash [HashLength]byte

Hash represents the 32 byte Keccak256 hash of arbitrary data.

func BigToHash 

func BigToHash(b *big.Int) Hash

func BytesToHash 

func BytesToHash(b []byte) Hash

func DoubleHashH 

func DoubleHashH(b []byte) Hash

func HexToHash 

func HexToHash(s string) Hash

func NewSelfHash added in v1.0.1 

func NewSelfHash() Hash

这是一个特殊Hash，表示引用自身

func (Hash) Big 

func (h Hash) Big() *big.Int

func (Hash) Bytes 

func (h Hash) Bytes() []byte

func (Hash) Format 

func (h Hash) Format(s fmt.State, c rune)

Format implements fmt.Formatter, forcing the byte slice to be formatted as is, without going through the stringer interface used for logging.

func (Hash) Generate 

func (h Hash) Generate(rand *rand.Rand, size int) reflect.Value

Generate implements testing/quick.Generator.

func (Hash) Hex 

func (h Hash) Hex() string

func (Hash) IsSelfHash added in v1.0.1 

func (h Hash) IsSelfHash() bool

func (Hash) IsZero 

func (h Hash) IsZero() bool

func (Hash) MarshalText 

func (h Hash) MarshalText() ([]byte, error)

MarshalText returns the hex representation of h.

func (*Hash) Set 

func (h *Hash) Set(other Hash)

Sets h to other

func (*Hash) SetBytes 

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

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

func (*Hash) SetHexString 

func (h *Hash) SetHexString(s string) error

func (*Hash) SetString 

func (h *Hash) SetString(s string)

Set string `s` to h. If s is larger than len(h) s will be cropped (from left) to fit.

func (Hash) Str 

func (h Hash) Str() string

Get the string representation of the underlying hash

func (Hash) String 

func (h Hash) String() string

String implements the stringer interface and is used also by the logger when doing full logging into a file.

func (Hash) TerminalString 

func (h Hash) TerminalString() string

TerminalString implements log.TerminalStringer, formatting a string for console output during logging.

func (*Hash) UnmarshalJSON 

func (h *Hash) UnmarshalJSON(input []byte) error

UnmarshalJSON parses a hash in hex syntax.

func (*Hash) UnmarshalText 

func (h *Hash) UnmarshalText(input []byte) error

UnmarshalText parses a hash in hex syntax.

type MixedcaseAddress 

type MixedcaseAddress struct {
	// contains filtered or unexported fields
}

MixedcaseAddress retains the original string, which may or may not be correctly checksummed. ///////////////(for wallet core tyeps SendTxArgs)

func (*MixedcaseAddress) Address 

func (ma *MixedcaseAddress) Address() Address

Address returns the address

func (*MixedcaseAddress) Original 

func (ma *MixedcaseAddress) Original() string

Original returns the mixed-case input string

func (*MixedcaseAddress) String 

func (ma *MixedcaseAddress) String() string

String implements fmt.Stringer

func (*MixedcaseAddress) ValidChecksum 

func (ma *MixedcaseAddress) ValidChecksum() bool

ValidChecksum returns true if the address has valid checksum

type PrettyDuration 

type PrettyDuration time.Duration

PrettyDuration is a pretty printed version of a time.Duration value that cuts the unnecessary precision off from the formatted textual representation.

func (PrettyDuration) String 

func (d PrettyDuration) String() string

String implements the Stringer interface, allowing pretty printing of duration values rounded to three decimals.

type SignatureError 

type SignatureError struct {
	InputIndex uint32
	MsgIndex   uint32
	Error      error
}

type StorageSize 

type StorageSize float64

StorageSize is a wrapper around a float value that supports user friendly formatting.

func (StorageSize) Bytes 

func (s StorageSize) Bytes() []byte

func (StorageSize) Float64 

func (s StorageSize) Float64() float64

func (StorageSize) String 

func (s StorageSize) String() string

String implements the stringer interface.

func (StorageSize) TerminalString 

func (s StorageSize) TerminalString() string

TerminalString implements log.TerminalStringer, formatting a string for console output during logging.

type UnprefixedHash 

type UnprefixedHash Hash

UnprefixedHash allows marshaling a Hash without 0x prefix.

func (UnprefixedHash) MarshalText 

func (h UnprefixedHash) MarshalText() ([]byte, error)

MarshalText encodes the hash as hex.

func (*UnprefixedHash) UnmarshalText 

func (h *UnprefixedHash) UnmarshalText(input []byte) error

UnmarshalText decodes the hash from hex. The 0x prefix is optional.

Source Files

View all Source files

Directories

Path Synopsis
Package bitutil implements fast bitwise operations.
 Package bitutil implements fast bitwise operations.
Package bloombits implements bloom filtering on batches of data.
 Package bloombits implements bloom filtering on batches of data.
Package bmt provides a binary merkle tree implementation simple nonconcurrent reference implementation for hashsize segment based Binary Merkle tree hash on arbitrary but fixed maximum chunksize This implementation does not take advantage of any paralellisms and uses far more memory than necessary, but it is easy to see that it is correct.
 Package bmt provides a binary merkle tree implementation simple nonconcurrent reference implementation for hashsize segment based Binary Merkle tree hash on arbitrary but fixed maximum chunksize This implementation does not take advantage of any paralellisms and uses far more memory than necessary, but it is easy to see that it is correct.
ecies
gmsm/sm2
crypto/x509 add sm2 support
 crypto/x509 add sm2 support
gmsm/sm3
randentropy
Package event deals with subscriptions to real-time events.
 Package event deals with subscriptions to real-time events.
filter
Package filter implements event filters.
 Package filter implements event filters.
This file is part of go-palletone.
 This file is part of go-palletone.
Package hexutil implements hex encoding with 0x prefix.
 Package hexutil implements hex encoding with 0x prefix.
Package math provides integer math utilities.
 Package math provides integer math utilities.
package mclock is a wrapper for a monotonic clock source
 package mclock is a wrapper for a monotonic clock source
p2p
discover
Package discover implements the Node Discovery Protocol.
 Package discover implements the Node Discovery Protocol.
discv5
Package discv5 implements the RLPx v5 Topic Discovery Protocol.
 Package discv5 implements the RLPx v5 Topic Discovery Protocol.
enr
Package enr implements PalletOne Node Records as defined in EIP-778.
 Package enr implements PalletOne Node Records as defined in EIP-778.
nat
Package nat provides access to common network port mapping protocols.
 Package nat provides access to common network port mapping protocols.
netutil
Package netutil contains extensions to the net package.
 Package netutil contains extensions to the net package.
protocols
Package protocols is an extension to p2p.
 Package protocols is an extension to p2p.
simulations
Package simulations simulates p2p networks.
 Package simulations simulates p2p networks.
simulations/adapters
testing
Package rpc provides access to the exported methods of an object across a network or other I/O connection.
 Package rpc provides access to the exported methods of an object across a network or other I/O connection.
Package trie implements Merkle Patricia Tries.
 Package trie implements Merkle Patricia Tries.
Package util contains various helper functions.
 Package util contains various helper functions.

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