152 lines
2.9 KiB
Go
152 lines
2.9 KiB
Go
/*
|
|
* Copyright 2026 Oleg Borodin <onborodin@gmail.com>
|
|
*/
|
|
package auxutar
|
|
|
|
import (
|
|
"archive/tar"
|
|
"io"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"time"
|
|
)
|
|
|
|
func Archive(srcdir, dstpath string) error {
|
|
var err error
|
|
srcdir = filepath.Clean(srcdir)
|
|
dstpath = filepath.Clean(dstpath)
|
|
|
|
err = os.MkdirAll(filepath.Dir(dstpath), 0750)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
tarFile, err := os.OpenFile(dstpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0640)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer tarFile.Close()
|
|
|
|
tarWriter := tar.NewWriter(tarFile)
|
|
defer tarWriter.Close()
|
|
|
|
walker := func(filename string, fileInfo os.FileInfo, err error) error {
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !fileInfo.Mode().IsRegular() {
|
|
return nil
|
|
}
|
|
header, err := tar.FileInfoHeader(fileInfo, fileInfo.Name())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
header.Name = strings.TrimPrefix(filename, filepath.Clean(srcdir))
|
|
header.Name = strings.TrimPrefix(header.Name, string(filepath.Separator))
|
|
err = tarWriter.WriteHeader(header)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
wrapfunc := func() error {
|
|
file, err := os.Open(filename)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer file.Close()
|
|
_, err = io.Copy(tarWriter, file)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return err
|
|
}
|
|
err = wrapfunc()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
err = filepath.Walk(srcdir, walker)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return err
|
|
}
|
|
|
|
func Unarchive(filename, dstdir string) error {
|
|
var err error
|
|
err = os.MkdirAll(dstdir, 0755)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
file, err := os.OpenFile(filename, os.O_RDONLY, 0)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer file.Close()
|
|
|
|
tarReader := tar.NewReader(file)
|
|
for {
|
|
header, err := tarReader.Next()
|
|
switch {
|
|
case err == io.EOF:
|
|
return nil
|
|
case err != nil:
|
|
return err
|
|
case header == nil:
|
|
continue
|
|
}
|
|
target := filepath.Join(dstdir, header.Name)
|
|
target = filepath.Clean(target)
|
|
|
|
fileInfo := header.FileInfo()
|
|
switch header.Typeflag {
|
|
case tar.TypeDir:
|
|
_, err := os.Stat(target)
|
|
if os.IsNotExist(err) {
|
|
err = nil
|
|
err := os.MkdirAll(target, fileInfo.Mode())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
case tar.TypeReg:
|
|
wrapfunc := func() error {
|
|
dir := filepath.Dir(target)
|
|
_, err := os.Stat(dir)
|
|
if os.IsNotExist(err) {
|
|
err := os.MkdirAll(dir, 0750)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
file, err := os.OpenFile(target, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, fileInfo.Mode())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer file.Close()
|
|
_, err = io.Copy(file, tarReader)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return err
|
|
}
|
|
err = wrapfunc()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
err = os.Chtimes(target, time.Now(), fileInfo.ModTime())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = file.Chmod(fileInfo.Mode())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return err
|
|
}
|