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- // 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 (
- "syscall"
- )
- // MkdirAll creates a directory named path,
- // along with any necessary parents, and returns nil,
- // or else returns an error.
- // The permission bits perm (before umask) are used for all
- // directories that MkdirAll creates.
- // If path is already a directory, MkdirAll does nothing
- // and returns nil.
- func MkdirAll(path string, perm FileMode) error {
- // Fast path: if we can tell whether path is a directory or file, stop with success or error.
- dir, err := Stat(path)
- if err == nil {
- if dir.IsDir() {
- return nil
- }
- return &PathError{Op: "mkdir", Path: path, Err: syscall.ENOTDIR}
- }
- // Slow path: make sure parent exists and then call Mkdir for path.
- i := len(path)
- for i > 0 && IsPathSeparator(path[i-1]) { // Skip trailing path separator.
- i--
- }
- j := i
- for j > 0 && !IsPathSeparator(path[j-1]) { // Scan backward over element.
- j--
- }
- if j > 1 {
- // Create parent.
- err = MkdirAll(fixRootDirectory(path[:j-1]), perm)
- if err != nil {
- return err
- }
- }
- // Parent now exists; invoke Mkdir and use its result.
- err = Mkdir(path, perm)
- if err != nil {
- // Handle arguments like "foo/." by
- // double-checking that directory doesn't exist.
- dir, err1 := Lstat(path)
- if err1 == nil && dir.IsDir() {
- return nil
- }
- return err
- }
- return nil
- }
- // RemoveAll removes path and any children it contains.
- // It removes everything it can but returns the first error
- // it encounters. If the path does not exist, RemoveAll
- // returns nil (no error).
- // If there is an error, it will be of type *PathError.
- func RemoveAll(path string) error {
- return removeAll(path)
- }
- // endsWithDot reports whether the final component of path is ".".
- func endsWithDot(path string) bool {
- if path == "." {
- return true
- }
- if len(path) >= 2 && path[len(path)-1] == '.' && IsPathSeparator(path[len(path)-2]) {
- return true
- }
- return false
- }
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