1 files changed, 180 insertions, 0 deletions
diff --git a/cmd/utils/cmd.go b/cmd/utils/cmd.go
new file mode 100644
index 000000000..6b99b841f
--- /dev/null
+++ b/cmd/utils/cmd.go
@@ -0,0 +1,180 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @authors
+ * 	Jeffrey Wilcke <i@jev.io>
+ * 	Viktor Tron <viktor@ethdev.com>
+ */
+package utils
+
+import (
+	"fmt"
+	"os"
+	"os/signal"
+	"regexp"
+
+	"github.com/ethereum/go-ethereum/core"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/eth"
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+var clilogger = logger.NewLogger("CLI")
+var interruptCallbacks = []func(os.Signal){}
+
+// Register interrupt handlers callbacks
+func RegisterInterrupt(cb func(os.Signal)) {
+	interruptCallbacks = append(interruptCallbacks, cb)
+}
+
+// go routine that call interrupt handlers in order of registering
+func HandleInterrupt() {
+	c := make(chan os.Signal, 1)
+	go func() {
+		signal.Notify(c, os.Interrupt)
+		for sig := range c {
+			clilogger.Errorf("Shutting down (%v) ... \n", sig)
+			RunInterruptCallbacks(sig)
+		}
+	}()
+}
+
+func RunInterruptCallbacks(sig os.Signal) {
+	for _, cb := range interruptCallbacks {
+		cb(sig)
+	}
+}
+
+func openLogFile(Datadir string, filename string) *os.File {
+	path := ethutil.AbsolutePath(Datadir, filename)
+	file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		panic(fmt.Sprintf("error opening log file '%s': %v", filename, err))
+	}
+	return file
+}
+
+func confirm(message string) bool {
+	fmt.Println(message, "Are you sure? (y/n)")
+	var r string
+	fmt.Scanln(&r)
+	for ; ; fmt.Scanln(&r) {
+		if r == "n" || r == "y" {
+			break
+		} else {
+			fmt.Printf("Yes or no? (%s)", r)
+		}
+	}
+	return r == "y"
+}
+
+func initDataDir(Datadir string) {
+	_, err := os.Stat(Datadir)
+	if err != nil {
+		if os.IsNotExist(err) {
+			fmt.Printf("Data directory '%s' doesn't exist, creating it\n", Datadir)
+			os.Mkdir(Datadir, 0777)
+		}
+	}
+}
+
+func exit(err error) {
+	status := 0
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "Fatal:", err)
+		status = 1
+	}
+	logger.Flush()
+	os.Exit(status)
+}
+
+// Fatalf formats a message to standard output and exits the program.
+func Fatalf(format string, args ...interface{}) {
+	fmt.Fprintf(os.Stderr, "Fatal: "+format+"\n", args...)
+	logger.Flush()
+	os.Exit(1)
+}
+
+func StartEthereum(ethereum *eth.Ethereum) {
+	clilogger.Infoln("Starting ", ethereum.Name())
+	if err := ethereum.Start(); err != nil {
+		exit(err)
+	}
+	RegisterInterrupt(func(sig os.Signal) {
+		ethereum.Stop()
+		logger.Flush()
+	})
+}
+
+func StartEthereumForTest(ethereum *eth.Ethereum) {
+	clilogger.Infoln("Starting ", ethereum.Name())
+	ethereum.StartForTest()
+	RegisterInterrupt(func(sig os.Signal) {
+		ethereum.Stop()
+		logger.Flush()
+	})
+}
+
+func FormatTransactionData(data string) []byte {
+	d := ethutil.StringToByteFunc(data, func(s string) (ret []byte) {
+		slice := regexp.MustCompile("\\n|\\s").Split(s, 1000000000)
+		for _, dataItem := range slice {
+			d := ethutil.FormatData(dataItem)
+			ret = append(ret, d...)
+		}
+		return
+	})
+
+	return d
+}
+
+func ImportChain(chainmgr *core.ChainManager, fn string) error {
+	fmt.Printf("importing blockchain '%s'\n", fn)
+	fh, err := os.OpenFile(fn, os.O_RDONLY, os.ModePerm)
+	if err != nil {
+		return err
+	}
+	defer fh.Close()
+
+	var blocks types.Blocks
+	if err := rlp.Decode(fh, &blocks); err != nil {
+		return err
+	}
+
+	chainmgr.Reset()
+	if err := chainmgr.InsertChain(blocks); err != nil {
+		return err
+	}
+	fmt.Printf("imported %d blocks\n", len(blocks))
+
+	return nil
+}
+
+func ExportChain(chainmgr *core.ChainManager, fn string) error {
+	fmt.Printf("exporting blockchain '%s'\n", fn)
+
+	data := chainmgr.Export()
+
+	if err := ethutil.WriteFile(fn, data); err != nil {
+		return err
+	}
+	fmt.Printf("exported blockchain\n")
+
+	return nil
+}