// 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 }