56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package ethutil
|
|
|
|
import (
|
|
"fmt"
|
|
"math/big"
|
|
)
|
|
|
|
// The different number of units
|
|
var (
|
|
Ether = BigPow(10, 18)
|
|
Finney = BigPow(10, 15)
|
|
Szabo = BigPow(10, 12)
|
|
Vita = BigPow(10, 9)
|
|
Turing = BigPow(10, 6)
|
|
Eins = BigPow(10, 3)
|
|
Wei = big.NewInt(1)
|
|
)
|
|
|
|
// Currency to string
|
|
//
|
|
// Returns a string representing a human readable format
|
|
func CurrencyToString(num *big.Int) string {
|
|
switch {
|
|
case num.Cmp(Ether) >= 0:
|
|
return fmt.Sprintf("%v Ether", new(big.Int).Div(num, Ether))
|
|
case num.Cmp(Finney) >= 0:
|
|
return fmt.Sprintf("%v Finney", new(big.Int).Div(num, Finney))
|
|
case num.Cmp(Szabo) >= 0:
|
|
return fmt.Sprintf("%v Szabo", new(big.Int).Div(num, Szabo))
|
|
case num.Cmp(Vita) >= 0:
|
|
return fmt.Sprintf("%v Vita", new(big.Int).Div(num, Vita))
|
|
case num.Cmp(Turing) >= 0:
|
|
return fmt.Sprintf("%v Turing", new(big.Int).Div(num, Turing))
|
|
case num.Cmp(Eins) >= 0:
|
|
return fmt.Sprintf("%v Eins", new(big.Int).Div(num, Eins))
|
|
}
|
|
|
|
return fmt.Sprintf("%v Wei", num)
|
|
}
|
|
|
|
// Common big integers often used
|
|
var (
|
|
Big1 = big.NewInt(1)
|
|
Big2 = big.NewInt(1)
|
|
Big0 = big.NewInt(0)
|
|
Big32 = big.NewInt(32)
|
|
Big256 = big.NewInt(0xff)
|
|
)
|
|
|
|
// Creates an ethereum address given the bytes and the nonce
|
|
func CreateAddress(b []byte, nonce *big.Int) []byte {
|
|
addrBytes := append(b, nonce.Bytes()...)
|
|
|
|
return Sha3Bin(addrBytes)[12:]
|
|
}
|