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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// Package gorecurcopy provides recursive copying in Go (golang) with a
// minimum of extra packages. Original concept by Oleg Neumyvakin
// (https://stackoverflow.com/users/1592008/oleg-neumyvakin) and modified
// by Dirk Avery.
// Slightly modified by me.
package main
import (
"fmt"
"io"
"io/ioutil"
"os"
"path/filepath"
// "syscall"
)
// copyDir recursively copies a src directory to a destination.
func copyDir(src, dst string) error {
entries, err := ioutil.ReadDir(src)
if err != nil {
return err
}
for _, entry := range entries {
sourcePath := filepath.Join(src, entry.Name())
destPath := filepath.Join(dst, entry.Name())
fileInfo, err := os.Lstat(sourcePath)
if err != nil {
return err
}
switch fileInfo.Mode() & os.ModeType {
case os.ModeDir:
if err := _createDir(destPath, 0755); err != nil {
return err
}
if err := copyDir(sourcePath, destPath); err != nil {
return err
}
case os.ModeSymlink:
if err := copySymlink(sourcePath, destPath); err != nil {
return err
}
default:
if err := _copy(sourcePath, destPath); err != nil {
return err
}
}
/*
stat, ok := fileInfo.Sys().(*syscall.Stat_t)
if !ok {
return fmt.Errorf("failed to get raw syscall.Stat_t data for '%s'", sourcePath)
}
if err := os.Lchown(destPath, int(stat.Uid), int(stat.Gid)); err != nil {
return err
}
*/
isSymlink := entry.Mode()&os.ModeSymlink != 0
if !isSymlink {
if err := os.Chmod(destPath, entry.Mode()); err != nil {
return err
}
}
}
return nil
}
// Copy copies a src file to a dst file where src and dst are regular files.
func _copy(src, dst string) error {
sourceFileStat, err := os.Stat(src)
if err != nil {
return err
}
if !sourceFileStat.Mode().IsRegular() {
return fmt.Errorf("%s is not a regular file", src)
}
source, err := os.Open(src)
if err != nil {
return err
}
defer source.Close()
destination, err := os.Create(dst)
if err != nil {
return err
}
defer destination.Close()
_, err = io.Copy(destination, source)
return err
}
func _exists(path string) bool {
if _, err := os.Stat(path); os.IsNotExist(err) {
return false
}
return true
}
func _createDir(dir string, perm os.FileMode) error {
if _exists(dir) {
return nil
}
if err := os.MkdirAll(dir, perm); err != nil {
return fmt.Errorf("failed to create directory: '%s', error: '%s'", dir, err.Error())
}
return nil
}
// copySymlink copies a symbolic link from src to dst.
func copySymlink(src, dst string) error {
link, err := os.Readlink(src)
if err != nil {
return err
}
return os.Symlink(link, dst)
}
|
