src/io/ioutil/tempfile.go

// Copyright 2010 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 ioutil

import (
	"os"
)

// TempFile creates a new temporary file in the directory dir,
// opens the file for reading and writing, and returns the resulting *os.File.
// The filename is generated by taking pattern and adding a random
// string to the end. If pattern includes a "*", the random string
// replaces the last "*".
// If dir is the empty string, TempFile uses the default directory
// for temporary files (see os.TempDir).
// Multiple programs calling TempFile simultaneously
// will not choose the same file. The caller can use f.Name()
// to find the pathname of the file. It is the caller's responsibility
// to remove the file when no longer needed.
//
// As of Go 1.17, this function simply calls os.CreateTemp.
func TempFile(dir, pattern string) (f *os.File, err error) {
	return os.CreateTemp(dir, pattern)
}

// TempDir creates a new temporary directory in the directory dir.
// The directory name is generated by taking pattern and applying a
// random string to the end. If pattern includes a "*", the random string
// replaces the last "*". TempDir returns the name of the new directory.
// If dir is the empty string, TempDir uses the
// default directory for temporary files (see os.TempDir).
// Multiple programs calling TempDir simultaneously
// will not choose the same directory. It is the caller's responsibility
// to remove the directory when no longer needed.
//
// As of Go 1.17, this function simply calls os.MkdirTemp.
func TempDir(dir, pattern string) (name string, err error) {
	return os.MkdirTemp(dir, pattern)
}