-
Notifications
You must be signed in to change notification settings - Fork 1
/
install.go
144 lines (134 loc) · 2.61 KB
/
install.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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
package main
import (
"crypto/sha256"
"errors"
"fmt"
"io"
"os"
"path/filepath"
)
func runInstall(r *Repository, args []string, w io.Writer) error {
f := NewFlagSet("install", "dotfile [...] path")
force := f.Bool("f", false, "indicate to replace old file")
if err := f.Parse(args); err != nil {
return err
}
args = f.Args()
if len(args) < 2 {
f.Usage()
os.Exit(2)
}
to := args[len(args)-1]
args = args[:len(args)-1]
if len(args) >= 2 {
ok, err := isDir(to)
if err != nil {
return err
}
if !ok {
return fmt.Errorf("%s not a directory", to)
}
}
for _, f := range args {
err := r.CopyFile(to, f, CopyFileOptions{
Overwrite: *force,
})
if err != nil {
return err
}
}
return nil
}
type CopyFileOptions struct {
MkdirAll bool
Overwrite bool
}
func (r *Repository) CopyFile(dest, p string, opts CopyFileOptions) error {
slug, err := r.Slug(p)
if err != nil {
return err
}
dest, err = filepath.Abs(dest)
if err != nil {
return err
}
fin, err := os.Open(p)
if err != nil {
return err
}
defer fin.Close()
ok, err := isDir(dest)
if err != nil {
return err
}
if ok {
dest = filepath.Join(dest, filepath.Base(p))
}
dir := filepath.Dir(dest)
if opts.MkdirAll {
if err := os.MkdirAll(dir, 0755); err != nil {
return err
}
}
flags := os.O_WRONLY | os.O_CREATE
if opts.Overwrite {
flags |= os.O_TRUNC
} else {
flags |= os.O_EXCL
}
fi, err := os.Stat(p)
if err != nil {
return err
}
mode := fi.Mode() & os.ModePerm
fout, err := os.OpenFile(dest, flags, mode)
if err != nil {
if errors.Is(err, os.ErrNotExist) {
return fmt.Errorf("'%s' file does not exist", dest)
}
if errors.Is(err, os.ErrExist) {
return fmt.Errorf("'%s' file already exist", dest)
}
return err
}
defer fout.Close()
h := sha256.New()
o := io.MultiWriter(h, fout)
io.Copy(o, fin)
if err := fout.Sync(); err != nil {
return err
}
if err := os.Chmod(dest, mode); err != nil {
return err
}
s := fmt.Sprintf("%x %o %s\n", h.Sum(nil), mode, dest)
file := r.StateFile(slug)
return writeFile(file, []byte(s), FileOptions{})
}
func isDir(name string) (bool, error) {
fi, err := os.Stat(name)
if err != nil {
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
return fi.Mode().IsDir(), nil
}
type FileOptions struct {
MkdirAll bool
Perm os.FileMode
}
func writeFile(name string, data []byte, opts FileOptions) error {
dir := filepath.Dir(name)
if opts.MkdirAll {
if err := os.MkdirAll(dir, 0755); err != nil {
return err
}
}
perm := os.FileMode(0644)
if opts.Perm != 0 {
perm = opts.Perm
}
return os.WriteFile(name, data, perm)
}