cmd/geth: support dumpconfig optionally saving to file (#18327)

* Changed dumpConfig function to optionally save to file

* Added O_TRUNC flag to file open and cleaned up code
This commit is contained in:
Sean 2019-01-07 19:56:50 +11:00 committed by Péter Szilágyi
parent e05d468075
commit 428eabe28d

View File

@ -20,7 +20,6 @@ import (
"bufio"
"errors"
"fmt"
"io"
"math/big"
"os"
"reflect"
@ -198,7 +197,17 @@ func dumpConfig(ctx *cli.Context) error {
if err != nil {
return err
}
io.WriteString(os.Stdout, comment)
os.Stdout.Write(out)
dump := os.Stdout
if ctx.NArg() > 0 {
dump, err = os.OpenFile(ctx.Args().Get(0), os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0644)
if err != nil {
return err
}
defer dump.Close()
}
dump.WriteString(comment)
dump.Write(out)
return nil
}