1 package fs
2 
3 import (
4 	"io"
5 	"io/fs"
6 )
7 
8 type dirInfo struct {
9 	entries []fs.DirEntry
10 	entryp  int
11 }
12 
13 func (d *dirInfo) ReadDir(n int) ([]fs.DirEntry, error) {
14 	entries := d.entries[d.entryp:]
15 	if n < 0 {
16 		d.entryp = len(d.entries) // advance to the end
17 		if len(entries) == 0 {
18 			return nil, nil
19 		}
20 		return entries, nil
21 	}
22 
23 	var err error
24 	if n >= len(entries) {
25 		err = io.EOF
26 	} else if d.entryp >= len(d.entries) {
27 		err = io.EOF
28 	} else {
29 		entries = entries[:n-1]
30 	}
31 	d.entryp += n
32 	return entries, err
33 }