forked from cerc-io/plugeth
96 lines
1.9 KiB
Go
96 lines
1.9 KiB
Go
package ethutil
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import (
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"fmt"
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"math/big"
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"runtime"
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"time"
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)
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func IsWindows() bool {
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return runtime.GOOS == "windows"
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}
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func WindonizePath(path string) string {
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if string(path[0]) == "/" && IsWindows() {
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path = path[1:]
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}
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return path
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}
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// The different number of units
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var (
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Douglas = BigPow(10, 42)
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Einstein = BigPow(10, 21)
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Ether = BigPow(10, 18)
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Finney = BigPow(10, 15)
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Szabo = BigPow(10, 12)
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Shannon = BigPow(10, 9)
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Babbage = BigPow(10, 6)
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Ada = BigPow(10, 3)
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Wei = big.NewInt(1)
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)
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//
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// Currency to string
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// Returns a string representing a human readable format
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func CurrencyToString(num *big.Int) string {
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var (
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fin *big.Int = num
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denom string = "Wei"
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)
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switch {
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case num.Cmp(Douglas) >= 0:
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fin = new(big.Int).Div(num, Douglas)
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denom = "Douglas"
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case num.Cmp(Einstein) >= 0:
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fin = new(big.Int).Div(num, Einstein)
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denom = "Einstein"
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case num.Cmp(Ether) >= 0:
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fin = new(big.Int).Div(num, Ether)
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denom = "Ether"
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case num.Cmp(Finney) >= 0:
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fin = new(big.Int).Div(num, Finney)
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denom = "Finney"
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case num.Cmp(Szabo) >= 0:
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fin = new(big.Int).Div(num, Szabo)
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denom = "Szabo"
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case num.Cmp(Shannon) >= 0:
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fin = new(big.Int).Div(num, Shannon)
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denom = "Shannon"
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case num.Cmp(Babbage) >= 0:
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fin = new(big.Int).Div(num, Babbage)
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denom = "Babbage"
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case num.Cmp(Ada) >= 0:
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fin = new(big.Int).Div(num, Ada)
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denom = "Ada"
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}
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// TODO add comment clarifying expected behavior
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if len(fin.String()) > 5 {
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return fmt.Sprintf("%sE%d %s", fin.String()[0:5], len(fin.String())-5, denom)
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}
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return fmt.Sprintf("%v %s", fin, denom)
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}
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// Common big integers often used
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var (
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Big1 = big.NewInt(1)
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Big2 = big.NewInt(2)
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Big3 = big.NewInt(3)
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Big0 = big.NewInt(0)
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BigTrue = Big1
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BigFalse = Big0
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Big32 = big.NewInt(32)
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Big256 = big.NewInt(0xff)
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Big257 = big.NewInt(257)
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)
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func Bench(pre string, cb func()) {
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start := time.Now()
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cb()
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fmt.Println(pre, ": took:", time.Since(start))
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}
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