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ALR/internal/osutils/move.go
Евгений Храмов d427b37e23 alr изменения
2024-05-05 13:32:08 +03:00

110 lines
2.6 KiB
Go

/*
* ALR - Any Linux Repository
* Copyright (C) 2024 Евгений Храмов
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
package osutils
import (
"io"
"os"
"path/filepath"
)
// Move attempts to use os.Rename and if that fails (such as for a cross-device move),
// it instead copies the source to the destination and then removes the source.
func Move(sourcePath, destPath string) error {
// Try to rename the source to the destination
err := os.Rename(sourcePath, destPath)
if err == nil {
return nil // Successful move
}
// Rename failed, so copy the source to the destination
err = copyDirOrFile(sourcePath, destPath)
if err != nil {
return err
}
// Copy successful, remove the original source
err = os.RemoveAll(sourcePath)
if err != nil {
return err
}
return nil
}
func copyDirOrFile(sourcePath, destPath string) error {
sourceInfo, err := os.Stat(sourcePath)
if err != nil {
return err
}
if sourceInfo.IsDir() {
return copyDir(sourcePath, destPath, sourceInfo)
} else if sourceInfo.Mode().IsRegular() {
return copyFile(sourcePath, destPath, sourceInfo)
} else {
// ignore non-regular files
return nil
}
}
func copyDir(sourcePath, destPath string, sourceInfo os.FileInfo) error {
err := os.MkdirAll(destPath, sourceInfo.Mode())
if err != nil {
return err
}
entries, err := os.ReadDir(sourcePath)
if err != nil {
return err
}
for _, entry := range entries {
sourceEntry := filepath.Join(sourcePath, entry.Name())
destEntry := filepath.Join(destPath, entry.Name())
err = copyDirOrFile(sourceEntry, destEntry)
if err != nil {
return err
}
}
return nil
}
func copyFile(sourcePath, destPath string, sourceInfo os.FileInfo) error {
sourceFile, err := os.Open(sourcePath)
if err != nil {
return err
}
defer sourceFile.Close()
destFile, err := os.OpenFile(destPath, os.O_CREATE|os.O_TRUNC|os.O_RDWR, sourceInfo.Mode())
if err != nil {
return err
}
defer destFile.Close()
_, err = io.Copy(destFile, sourceFile)
if err != nil {
return err
}
return nil
}