| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package os |
| |
| import ( |
| "io" |
| "runtime" |
| "syscall" |
| ) |
| |
| func (file *File) readdir(n int) (fi []FileInfo, err error) { |
| if file == nil { |
| return nil, syscall.EINVAL |
| } |
| if !file.isdir() { |
| return nil, &PathError{"Readdir", file.name, syscall.ENOTDIR} |
| } |
| wantAll := n <= 0 |
| size := n |
| if wantAll { |
| n = -1 |
| size = 100 |
| } |
| fi = make([]FileInfo, 0, size) // Empty with room to grow. |
| d := &file.dirinfo.data |
| for n != 0 && !file.dirinfo.isempty { |
| if file.dirinfo.needdata { |
| e := file.pfd.FindNextFile(d) |
| runtime.KeepAlive(file) |
| if e != nil { |
| if e == syscall.ERROR_NO_MORE_FILES { |
| break |
| } else { |
| err = &PathError{"FindNextFile", file.name, e} |
| if !wantAll { |
| fi = nil |
| } |
| return |
| } |
| } |
| } |
| file.dirinfo.needdata = true |
| name := syscall.UTF16ToString(d.FileName[0:]) |
| if name == "." || name == ".." { // Useless names |
| continue |
| } |
| f := newFileStatFromWin32finddata(d) |
| f.name = name |
| f.path = file.dirinfo.path |
| f.appendNameToPath = true |
| n-- |
| fi = append(fi, f) |
| } |
| if !wantAll && len(fi) == 0 { |
| return fi, io.EOF |
| } |
| return fi, nil |
| } |
| |
| func (file *File) readdirnames(n int) (names []string, err error) { |
| fis, err := file.Readdir(n) |
| names = make([]string, len(fis)) |
| for i, fi := range fis { |
| names[i] = fi.Name() |
| } |
| return names, err |
| } |
