walk recursively in "fileSystem" descends "root" path, calling "walkFn".
(fileSystem fs.FS, root string, walkFn filepath.WalkFunc)
| 10 | |
| 11 | // walk recursively in "fileSystem" descends "root" path, calling "walkFn". |
| 12 | func walk(fileSystem fs.FS, root string, walkFn filepath.WalkFunc) error { |
| 13 | if root != "" && root != "/" && root != "." { |
| 14 | sub, err := fs.Sub(fileSystem, root) |
| 15 | if err != nil { |
| 16 | return err |
| 17 | } |
| 18 | fileSystem = sub |
| 19 | } |
| 20 | |
| 21 | if root == "" { |
| 22 | root = "." |
| 23 | } |
| 24 | |
| 25 | return fs.WalkDir(fileSystem, root, func(path string, d fs.DirEntry, err error) error { |
| 26 | if err != nil { |
| 27 | return fmt.Errorf("walk: %s: %w", path, err) |
| 28 | } |
| 29 | |
| 30 | info, err := d.Info() |
| 31 | if err != nil { |
| 32 | if err != filepath.SkipDir { |
| 33 | return fmt.Errorf("walk stat: %s: %w", path, err) |
| 34 | } |
| 35 | |
| 36 | return nil |
| 37 | } |
| 38 | |
| 39 | if info.IsDir() { |
| 40 | return nil |
| 41 | } |
| 42 | |
| 43 | walkFnErr := walkFn(path, info, err) |
| 44 | if walkFnErr != nil { |
| 45 | return fmt.Errorf("walk: walkFn: %w", walkFnErr) |
| 46 | } |
| 47 | |
| 48 | return nil |
| 49 | }) |
| 50 | |
| 51 | } |
| 52 | |
| 53 | func asset(fileSystem fs.FS, name string) ([]byte, error) { |
| 54 | data, err := fs.ReadFile(fileSystem, name) |