-
Notifications
You must be signed in to change notification settings - Fork 0
/
copy.go
107 lines (86 loc) · 1.76 KB
/
copy.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
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
package fstesting
import (
"fmt"
"io"
"os"
"path/filepath"
"github.com/spf13/afero"
)
func InMemoryCopy(osPath, memPath string) (afero.Fs, error) {
memFs := afero.NewMemMapFs()
osFs := afero.NewOsFs()
err := CopyDir(osFs, memFs, osPath, memPath)
if err != nil {
return memFs, err
}
return memFs, nil
}
func CopyDir(srcFs, dstFs afero.Fs, src, dst string) error {
si, err := srcFs.Stat(src)
if err != nil {
return err
}
if !si.IsDir() {
return fmt.Errorf("source is not a directory")
}
found, err := afero.Exists(dstFs, dst)
if err != nil {
return err
}
if found {
return fmt.Errorf("destination %s exists already", dst)
}
err = dstFs.MkdirAll(dst, si.Mode())
if err != nil {
return err
}
entries, err := afero.ReadDir(srcFs, src)
if err != nil {
return err
}
for _, entry := range entries {
srcPath := filepath.Join(src, entry.Name())
dstPath := filepath.Join(dst, entry.Name())
// Symlink
if entry.Mode()&os.ModeSymlink != 0 {
return fmt.Errorf("copy symlink %s: symlinks are not generally supported for afero filesystem", srcPath)
}
if entry.IsDir() {
err = CopyDir(srcFs, dstFs, srcPath, dstPath)
if err != nil {
return err
}
continue
}
err = CopyFile(srcFs, dstFs, srcPath, dstPath)
if err != nil {
return err
}
}
return nil
}
func CopyFile(srcFs, dstFs afero.Fs, src, dst string) error {
in, err := srcFs.Open(src)
if err != nil {
return err
}
defer in.Close()
si, err := srcFs.Stat(src)
if err != nil {
return err
}
out, err := dstFs.OpenFile(dst, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, si.Mode())
if err != nil {
return err
}
defer out.Close()
_, err = io.Copy(out, in)
if err != nil {
return err
}
err = out.Close()
if err != nil {
return err
}
return nil
}