fast and minimal static site generator
anirudh.fi
ssg
1package fileutil
2
3import (
4 "fmt"
5 "io"
6 "os"
7 "path/filepath"
8)
9
10// CopyFile copies a file from src to dst.
11func CopyFile(src, dst string) error {
12 in, err := os.Open(src)
13 if err != nil {
14 return err
15 }
16 defer in.Close()
17
18 out, err := os.Create(dst)
19 if err != nil {
20 return err
21 }
22 defer out.Close()
23
24 _, err = io.Copy(out, in)
25 if err != nil {
26 return err
27 }
28
29 // Copy modes.
30 f, err := os.Stat(src)
31 if err == nil {
32 err = os.Chmod(dst, f.Mode())
33 if err != nil {
34 return err
35 }
36 }
37
38 return out.Close()
39}
40
41// CopyDir copies an entire directory tree from
42// src to dst.
43func CopyDir(src, dst string) error {
44 fi, err := os.Stat(src)
45 if err != nil {
46 return err
47 }
48
49 if !fi.IsDir() {
50 return fmt.Errorf("error: %q is not a directory", fi)
51 }
52
53 if err = os.MkdirAll(dst, 0755); err != nil {
54 return err
55 }
56
57 items, _ := os.ReadDir(src)
58 for _, item := range items {
59 srcFilename := filepath.Join(src, item.Name())
60 dstFilename := filepath.Join(dst, item.Name())
61 if item.IsDir() {
62 if err := CopyDir(srcFilename, dstFilename); err != nil {
63 return err
64 }
65 } else {
66 if err := CopyFile(srcFilename, dstFilename); err != nil {
67 return err
68 }
69 }
70 }
71
72 return nil
73}