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// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package trackerdb
import (
"io"
"os"
"path/filepath"
)
// isDirEmpty returns if a given directory is empty or not.
func isDirEmpty(path string) (bool, error) {
dir, err := os.Open(path)
if err != nil {
return false, err
}
defer dir.Close()
_, err = dir.Readdirnames(1)
if err != io.EOF {
return false, err
}
return true, nil
}
// GetEmptyDirs returns a slice of paths for empty directories which are located in PathToScan arg
func GetEmptyDirs(PathToScan string) ([]string, error) {
var emptyDir []string
err := filepath.Walk(PathToScan, func(path string, f os.FileInfo, errIn error) error {
if errIn != nil {
return errIn
}
if !f.IsDir() {
return nil
}
isEmpty, err := isDirEmpty(path)
if err != nil {
if os.IsNotExist(err) {
return filepath.SkipDir
}
return err
}
if isEmpty {
emptyDir = append(emptyDir, path)
}
return nil
})
return emptyDir, err
}
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