1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
11 // MkdirAll creates a directory named path,
12 // along with any necessary parents, and returns nil,
13 // or else returns an error.
14 // The permission bits perm (before umask) are used for all
15 // directories that MkdirAll creates.
16 // If path is already a directory, MkdirAll does nothing
18 func MkdirAll(path string, perm FileMode) error {
19 // Fast path: if we can tell whether path is a directory or file, stop with success or error.
20 dir, err := Stat(path)
25 return &PathError{Op: "mkdir", Path: path, Err: syscall.ENOTDIR}
28 // Slow path: make sure parent exists and then call Mkdir for path.
30 // Extract the parent folder from path by first removing any trailing
31 // path separator and then scanning backward until finding a path
32 // separator or reaching the beginning of the string.
34 for i >= 0 && IsPathSeparator(path[i]) {
37 for i >= 0 && !IsPathSeparator(path[i]) {
44 // If there is a parent directory, and it is not the volume name,
45 // recurse to ensure parent directory exists.
46 if parent := path[:i]; len(parent) > len(volumeName(path)) {
47 err = MkdirAll(parent, perm)
53 // Parent now exists; invoke Mkdir and use its result.
54 err = Mkdir(path, perm)
56 // Handle arguments like "foo/." by
57 // double-checking that directory doesn't exist.
58 dir, err1 := Lstat(path)
59 if err1 == nil && dir.IsDir() {
67 // RemoveAll removes path and any children it contains.
68 // It removes everything it can but returns the first error
69 // it encounters. If the path does not exist, RemoveAll
70 // returns nil (no error).
71 // If there is an error, it will be of type *PathError.
72 func RemoveAll(path string) error {
73 return removeAll(path)
76 // endsWithDot reports whether the final component of path is ".".
77 func endsWithDot(path string) bool {
81 if len(path) >= 2 && path[len(path)-1] == '.' && IsPathSeparator(path[len(path)-2]) {