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- package os
- import (
- "io"
- "syscall"
- )
- const (
- blockSize = 4096
- )
- func (f *File) readdirnames(n int) (names []string, err error) {
-
- if f.dirinfo == nil {
- f.dirinfo = new(dirInfo)
-
- f.dirinfo.buf = make([]byte, blockSize)
- }
- d := f.dirinfo
- size := n
- if size <= 0 {
- size = 100
- n = -1
- }
- names = make([]string, 0, size)
- for n != 0 {
-
- if d.bufp >= d.nbuf {
- d.bufp = 0
- var errno error
- d.nbuf, errno = fixCount(syscall.ReadDirent(f.fd, d.buf))
- if errno != nil {
- return names, NewSyscallError("readdirent", errno)
- }
- if d.nbuf <= 0 {
- break
- }
- }
-
- var nb, nc int
- nb, nc, names = syscall.ParseDirent(d.buf[d.bufp:d.nbuf], n, names)
- d.bufp += nb
- n -= nc
- }
- if n >= 0 && len(names) == 0 {
- return names, io.EOF
- }
- return names, nil
- }
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