1package mox

2

3import (

4 "fmt"

5 "io"

6 "io/fs"

7 "strings"

8)

9

10var LicensesFsys fs.FS

11

12// LicensesWrite writes the licenses to dst.

13func LicensesWrite(dst io.Writer) error {

14 copyFile := func(p string) error {

15 f, err := LicensesFsys.Open(p)

16 if err != nil {

17 return fmt.Errorf("open license file: %v", err)

18 }

19 if _, err := io.Copy(dst, f); err != nil {

20 return fmt.Errorf("copy license file: %v", err)

21 }

22 if err := f.Close(); err != nil {

23 return fmt.Errorf("close license file: %v", err)

24 }

25 return nil

26 }

27

28 if _, err := fmt.Fprintf(dst, "# github.com/mjl-/mox/LICENSE\n\n"); err != nil {

29 return err

30 }

31 if err := copyFile("LICENSE.MIT"); err != nil {

32 return err

33 }

34

35 if _, err := fmt.Fprintf(dst, "\n\n# https://publicsuffix.org - Public Suffix List Mozilla\n\n"); err != nil {

36 return err

37 }

38 if err := copyFile("LICENSE.MPLv2.0"); err != nil {

39 return err

40 }

41

42 err := fs.WalkDir(LicensesFsys, "licenses", func(path string, d fs.DirEntry, err error) error {

43 if !d.Type().IsRegular() {

44 return nil

45 }

46 if _, err := fmt.Fprintf(dst, "\n\n# %s\n\n", strings.TrimPrefix(path, "licenses/")); err != nil {

47 return err

48 }

49 return copyFile(path)

50 })

51 if err != nil {

52 return fmt.Errorf("walk licenses: %v", err)

53 }

54 return nil

55}

56