cmd/puppeth: chain import/export via wizard, minor polishes

cmd/puppeth/puppeth.go

@@ -18,15 +18,11 @@
 package main
 
 import (
-	"encoding/json"
-	"io/ioutil"
 	"math/rand"
 	"os"
 	"strings"
 	"time"
 
-	"github.com/ethereum/go-ethereum/cmd/utils"
-	"github.com/ethereum/go-ethereum/core"
 	"github.com/ethereum/go-ethereum/log"
 	"gopkg.in/urfave/cli.v1"
 )
@@ -47,46 +43,23 @@ func main() {
 			Usage: "log level to emit to the screen",
 		},
 	}
-	app.Commands = []cli.Command{
-		cli.Command{
-			Action:    utils.MigrateFlags(convert),
-			Name:      "convert",
-			Usage:     "Convert from geth genesis into chainspecs for other nodes.",
-			ArgsUsage: "<geth-genesis.json>",
-		},
-	}
-	app.Action = func(c *cli.Context) error {
+	app.Before = func(c *cli.Context) error {
 		// Set up the logger to print everything and the random generator
 		log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(c.Int("loglevel")), log.StreamHandler(os.Stdout, log.TerminalFormat(true))))
 		rand.Seed(time.Now().UnixNano())
 
-		network := c.String("network")
-		if strings.Contains(network, " ") || strings.Contains(network, "-") || strings.ToLower(network) != network {
-			log.Crit("No spaces, hyphens or capital letters allowed in network name")
-		}
-		// Start the wizard and relinquish control
-		makeWizard(c.String("network")).run()
 		return nil
 	}
+	app.Action = runWizard
 	app.Run(os.Args)
 }
 
-func convert(ctx *cli.Context) error {
-	// Ensure we have a source genesis
-	log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stdout, log.TerminalFormat(true))))
-	if len(ctx.Args()) != 1 {
-		utils.Fatalf("No geth genesis provided")
+// runWizard start the wizard and relinquish control to it.
+func runWizard(c *cli.Context) error {
+	network := c.String("network")
+	if strings.Contains(network, " ") || strings.Contains(network, "-") || strings.ToLower(network) != network {
+		log.Crit("No spaces, hyphens or capital letters allowed in network name")
 	}
-	blob, err := ioutil.ReadFile(ctx.Args().First())
-	if err != nil {
-		utils.Fatalf("Could not read file: %v", err)
-	}
-
-	var genesis core.Genesis
-	if err := json.Unmarshal(blob, &genesis); err != nil {
-		utils.Fatalf("Failed parsing genesis: %v", err)
-	}
-	basename := strings.TrimRight(ctx.Args().First(), ".json")
-	convertGenesis(&genesis, basename, basename, []string{})
+	makeWizard(c.String("network")).run()
 	return nil
 }