[dev] token issuer

.gitignore

@@ -6,6 +6,7 @@
 *.dylib
 *.abi
 *.bin
+/cmd/issueToken/issueToken
 
 # IDEs
 /.idea

cmd/issueToken/main.go

@@ -0,0 +1,119 @@
+/*
+* Copyright (c) 2018 Dabank
+* Use of this work is governed by a MIT License.
+* You may find a license copy under project root.
+ */
+
+package main
+
+import (
+	"encoding/hex"
+	"flag"
+	"fmt"
+	"math/big"
+	"os"
+	"strings"
+
+	"github.com/ethereum/go-ethereum/accounts/abi/bind"
+
+	"github.com/ethereum/go-ethereum/common"
+
+	"github.com/ethereum/go-ethereum/ethclient"
+
+	"math"
+
+	"github.com/dabankio/TokenIssuer"
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+var (
+	rpcURL      string
+	name        string
+	symbol      string
+	totalSupply uint64
+	decimals    uint64
+	owner       string
+	prikeyStr   string
+)
+
+func init() {
+	flag.StringVar(&rpcURL, "rpc", "https://mainnet.infura.io", "Ethereum RPC endpoint")
+	flag.StringVar(&name, "name", "My Lovely Token", "token Name")
+	flag.StringVar(&symbol, "symbol", "MLT", "token symbol")
+	flag.Uint64Var(&totalSupply, "total", 42, "initial supply for token")
+	flag.StringVar(&owner, "owner", "", "owner of token, default to message sender")
+	flag.Uint64Var(&decimals, "decimals", 6, "decimals of token")
+	flag.StringVar(&prikeyStr, "prikey", "", "prikey of message sender")
+}
+
+func main() {
+	flag.Parse()
+
+	var err error
+	defer func() {
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+	}()
+
+	if decimals > math.MaxUint8 {
+		err = fmt.Errorf("decimals should be less than 255, got %v", decimals)
+		return
+	}
+	if totalSupply > math.MaxInt64 {
+		err = fmt.Errorf("total should be less than 9223372036854775807")
+		return
+	}
+
+	bigTotalSupply := new(big.Int).
+		Mul(big.NewInt(int64(totalSupply)),
+			new(big.Int).Exp(big.NewInt(10), big.NewInt(int64(decimals)), nil))
+
+	prikeyStr = strings.TrimLeft(prikeyStr, "0x")
+	prikeyStr = strings.TrimLeft(prikeyStr, "0X")
+
+	prikeyBytes, err := hex.DecodeString(prikeyStr)
+	if err != nil {
+		err = fmt.Errorf("can not decode prikey from hex: %v", err)
+		return
+	}
+
+	prikey, err := crypto.ToECDSA(prikeyBytes)
+	if err != nil {
+		err = fmt.Errorf("can not convert prikey to ECDSA: %v", err)
+		return
+	}
+
+	var ownerAddr common.Address
+	if len(owner) == 0 {
+		ownerAddr = crypto.PubkeyToAddress(prikey.PublicKey)
+	} else {
+		ownerAddr = common.HexToAddress(owner)
+		if strings.ToLower(ownerAddr.Hex()) != strings.ToLower(owner) {
+			err = fmt.Errorf("invalid owner input")
+			return
+		}
+	}
+
+	coon, err := ethclient.Dial(rpcURL)
+	if err != nil {
+		err = fmt.Errorf("can not dial Ethereum RPC: %v", err)
+		return
+	}
+
+	opts := bind.NewKeyedTransactor(prikey)
+
+	tokenAddr, tx, _, err := TokenIssuer.DeployToken(opts, coon, name, symbol, ownerAddr, bigTotalSupply, uint8(decimals))
+	if err != nil {
+		err = fmt.Errorf("deploy failed: %v", err)
+		return
+	}
+
+	fmt.Printf(`Congradulations! Your %s(%s) will be addressed at
+%s
+after tx %s is mined. :)
+`, name, symbol,
+		tokenAddr.Hex(),
+		tx.Hash().Hex())
+}

doc.go

@@ -1,4 +1,4 @@
-// package TokenIssuer -- Issue Your ERC-20 Token in a Minute
+// Package TokenIssuer -- Issue Your ERC-20 Token in a Minute
 //
 // details: https://github.com/dabankio/TokenIssuer
 package TokenIssuer