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// Copyright 2021 The go-ethereum Authors
// 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/>.
package t8ntool
import (
"encoding/json"
"fmt"
"os"
"github.com/urfave/cli/v2"
)
// readFile reads the json-data in the provided path and marshals into dest.
func readFile(path, desc string, dest interface{}) error {
inFile, err := os.Open(path)
if err != nil {
return NewError(ErrorIO, fmt.Errorf("failed reading %s file: %v", desc, err))
}
defer inFile.Close()
decoder := json.NewDecoder(inFile)
if err := decoder.Decode(dest); err != nil {
return NewError(ErrorJson, fmt.Errorf("failed unmarshaling %s file: %v", desc, err))
}
return nil
}
// createBasedir makes sure the basedir exists, if user specified one.
func createBasedir(ctx *cli.Context) (string, error) {
baseDir := ""
if ctx.IsSet(OutputBasedir.Name) {
if base := ctx.String(OutputBasedir.Name); len(base) > 0 {
err := os.MkdirAll(base, 0755) // //rw-r--r--
if err != nil {
return "", err
}
baseDir = base
}
}
return baseDir, nil
}