-
Notifications
You must be signed in to change notification settings - Fork 9
/
stash.go
65 lines (61 loc) · 1.54 KB
/
stash.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package reproxy
import (
"io"
"os"
"path/filepath"
"github.com/google/uuid"
)
// StashFiles copies the given files to a temporary location. It returns a function that
// restores the original files.
func StashFiles(paths []string) func() {
parentDir := os.TempDir()
newFiles := make(map[string]string)
for _, srcPath := range paths {
source, err := os.Open(srcPath)
if err != nil {
continue
}
defer source.Close()
destPath := filepath.Join(parentDir, uuid.New().String())
destination, err := os.Create(destPath)
if err != nil {
continue
}
defer destination.Close()
_, err = io.Copy(destination, source)
if err != nil {
continue
}
err = destination.Sync()
if err != nil {
continue
}
si, err := os.Stat(srcPath)
if err != nil {
continue
}
err = os.Chmod(destPath, si.Mode())
if err != nil {
continue
}
newFiles[destPath] = srcPath
}
return func() {
for dup, orig := range newFiles {
os.Rename(dup, orig)
}
}
}