2020-10-04 13:05:39 +02:00
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package oscommands
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import (
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"fmt"
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"io"
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"os"
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"path/filepath"
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)
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/* MIT License
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*
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* Copyright (c) 2017 Roland Singer [roland.singer@desertbit.com]
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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// CopyFile copies the contents of the file named src to the file named
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// by dst. The file will be created if it does not already exist. If the
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// destination file exists, all it's contents will be replaced by the contents
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// of the source file. The file mode will be copied from the source and
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// the copied data is synced/flushed to stable storage.
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func CopyFile(src, dst string) (err error) {
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in, err := os.Open(src)
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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defer in.Close()
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out, err := os.Create(dst)
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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defer func() {
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if e := out.Close(); e != nil {
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err = e
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}
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}()
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_, err = io.Copy(out, in)
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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err = out.Sync()
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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si, err := os.Stat(src)
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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err = os.Chmod(dst, si.Mode())
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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2022-03-25 14:16:24 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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// CopyDir recursively copies a directory tree, attempting to preserve permissions.
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2020-10-06 00:23:09 +02:00
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// Source directory must exist. If destination already exists we'll clobber it.
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2020-10-04 13:05:39 +02:00
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// Symlinks are ignored and skipped.
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func CopyDir(src string, dst string) (err error) {
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src = filepath.Clean(src)
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dst = filepath.Clean(dst)
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si, err := os.Stat(src)
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if err != nil {
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return err
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}
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if !si.IsDir() {
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return fmt.Errorf("source is not a directory")
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}
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_, err = os.Stat(dst)
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if err != nil && !os.IsNotExist(err) {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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if err == nil {
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2020-10-06 00:23:09 +02:00
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// it exists so let's remove it
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if err := os.RemoveAll(dst); err != nil {
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return err
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}
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2020-10-04 13:05:39 +02:00
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}
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err = os.MkdirAll(dst, si.Mode())
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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2023-08-02 00:21:55 +02:00
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entries, err := os.ReadDir(src)
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2020-10-04 13:05:39 +02:00
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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for _, entry := range entries {
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srcPath := filepath.Join(src, entry.Name())
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dstPath := filepath.Join(dst, entry.Name())
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if entry.IsDir() {
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err = CopyDir(srcPath, dstPath)
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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} else {
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2023-08-02 00:21:55 +02:00
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var info os.FileInfo
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info, err = entry.Info()
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if err != nil {
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return //nolint: nakedret
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}
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2020-10-04 13:05:39 +02:00
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// Skip symlinks.
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2023-08-02 00:21:55 +02:00
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if info.Mode()&os.ModeSymlink != 0 {
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2020-10-04 13:05:39 +02:00
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continue
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}
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err = CopyFile(srcPath, dstPath)
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if err != nil {
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2023-06-03 07:49:38 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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}
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}
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2022-03-25 14:16:24 +02:00
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return //nolint: nakedret
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2020-10-04 13:05:39 +02:00
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}
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