Golang *File points to a file or directory ?



Tags : golang file directory

In this tutorial, we will learn how to find out if the *File pointer is pointing to a file or directory. The codes are self explanatory

fileordir.go

 package main

 import (
 "fmt"
 "os"
 "flag"
 )

 func main() {
 flag.Parse()

 fileordir := flag.Arg(0) // get first argument

 file, err := os.Open(fileordir)
 if err != nil {
 fmt.Println(err)
 return
 }
 defer file.Close()

 fileInfo, err := file.Stat()
 if err != nil {
 fmt.Println(err)
 return
 }

 switch mode := fileInfo.Mode(); {
 case mode.IsDir():
 fmt.Println(fileordir + " is a directory")
 case mode.IsRegular():
 fmt.Println(fileordir + " is a file")
 }
 }

localhost:~ admin$ go run fileordir.go /Users/admin/for

/Users/admin/for is a file

localhost:~ admin$ go run fileordir.go /Users/admin

/Users/admin is a directory

Hope this can be useful.

  See also : Golang : Copy directory - including sub-directories and files



Tags : golang file directory

By Adam Ng

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