Empty directory: Difference between revisions
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{{
Starting with a path to some directory, determine whether the directory is empty.
An empty directory contains no files nor subdirectories.
With [[Unix]] or [[Windows]] systems, every directory contains an entry for “<code>.</code>” and almost every directory contains “<code>..</code>” (except for a root directory); an empty directory contains no other entries.
=={{header|11l}}==
<syntaxhighlight lang="11l">I fs:list_dir(input()).empty
print(‘empty’)
E
print(‘not empty’)</syntaxhighlight>
=={{header|8086 Assembly}}==
{{trans|MS-DOS}}
<syntaxhighlight lang="asm">; this routine attempts to remove the directory and returns an error code if it cannot.
mov ax,seg dirname ;load into AX the segment where dirname is stored.
mov ds,ax ;load the segment register DS with the segment of dirname
mov dx,offset dirname ;load into DX the offset of dirname
mov ah,39h ;0x39 is the interrupt code for remove directory
int 21h ;sets carry if error is encountered. error code will be in AX.
;If carry is clear the remove was successful
jc error
mov ah,4Ch ;return function
mov al,0 ;required return code
int 21h ;return to DOS
error: ;put your error handler here
mov ah,4Ch ;return function
mov al,0 ;required return code
int 21h ;return to DOS
dirname db "GAMES",0</syntaxhighlight>
=={{header|Ada}}==
<syntaxhighlight lang="ada">with Ada.Text_IO; use Ada.Text_IO;
with Ada.Directories;
procedure EmptyDir is
function Empty (path : String) return String is
use Ada.Directories;
result : String := "Is empty.";
procedure check (ent : Directory_Entry_Type) is begin
if Simple_Name (ent) /= "." and Simple_Name (ent) /= ".." then
Empty.result := "Not empty";
end if;
end check;
begin
if not Exists (path) then return "Does not exist.";
elsif Kind (path) /= Directory then return "Not a Directory.";
end if;
Search (path, "", Process => check'Access);
return result;
end Empty;
begin
Put_Line (Empty ("."));
Put_Line (Empty ("./empty"));
Put_Line (Empty ("./emptydir.adb"));
Put_Line (Empty ("./foobar"));
end EmptyDir;</syntaxhighlight>
{{out}}
<pre>Not empty
Is empty.
Not a Directory.
Does not exist.</pre>
=={{header|ALGOL 68}}==
{{works with|ALGOL 68G|Any - tested with release 2.8.3.win32}}
This uses the "argc", "argv", "file is directory" and "get directory" procedures specific to Algol 68 G.
<br>Note the Algol 68 G interpreter processes the command line parameters before "-" so this example expects the directory names to follow "-".
<syntaxhighlight lang="algol68"># returns TRUE if the specified directory is empty, FALSE if it doesn't exist or is non-empty #
PROC is empty directory = ( STRING directory )BOOL:
IF NOT file is directory( directory )
THEN
# directory doesn't exist #
FALSE
ELSE
# directory is empty if it contains no files or just "." and possibly ".." #
[]STRING files = get directory( directory );
BOOL result := FALSE;
FOR f FROM LWB files TO UPB files
WHILE result := files[ f ] = "." OR files[ f ] = ".."
DO
SKIP
OD;
result
FI # is empty directory # ;
# test the is empty directory procedure #
# show whether the directories specified on the command line ( following "-" ) are empty or not #
BOOL directory name parameter := FALSE;
FOR i TO argc DO
IF argv( i ) = "-"
THEN
# marker to indicate directory names follow #
directory name parameter := TRUE
ELIF directory name parameter
THEN
# have a directory name - report whether it is emty or not #
print( ( argv( i ), " is ", IF is empty directory( argv( i ) ) THEN "empty" ELSE "not empty" FI, newline ) )
FI
OD</syntaxhighlight>
{{out}}
<pre>
H:\algol\rosetta>a68g emptyDirectory.a68 - . /temp \zz
. is not empty
/temp is not empty
\zz is empty
</pre>
=={{header|Arturo}}==
<syntaxhighlight lang="rebol">emptyDir?: function [folder]-> empty? list folder
print emptyDir? "."</syntaxhighlight>
{{out}}
<pre>false</pre>
=={{header|AutoHotkey}}==
<syntaxhighlight lang="autohotkey">MsgBox % isDir_empty(A_ScriptDir)?"true":"false"
isDir_empty(p) {
Loop, %p%\* , 1
return 0
return 1
}</syntaxhighlight>
{{out}}
<pre>false</pre>
=={{header|AWK}}==
<syntaxhighlight lang="awk">
# syntax: GAWK -f EMPTY_DIRECTORY.AWK
BEGIN {
n = split("C:\\TEMP3,C:\\NOTHERE,C:\\AWK\\FILENAME,C:\\WINDOWS",arr,",")
for (i=1; i<=n; i++) {
printf("'%s' %s\n",arr[i],is_dir(arr[i]))
}
exit(0)
}
function is_dir(path, cmd,dots,entries,msg,rec,valid_dir) {
cmd = sprintf("DIR %s 2>NUL",path) # MS-Windows
while ((cmd | getline rec) > 0) {
if (rec ~ /[0-9]:[0-5][0-9]/) {
if (rec ~ / (\.|\.\.)$/) { # . or ..
dots++
continue
}
entries++
}
if (rec ~ / Dir\(s\) .* bytes free$/) {
valid_dir = 1
}
}
close(cmd)
if (valid_dir == 0) {
msg = "does not exist"
}
else if (valid_dir == 1 && entries == 0) {
msg = "is an empty directory"
}
else if (dots == 0 && entries == 1) {
msg = "is a file"
}
else {
msg = sprintf("is a directory with %d entries",entries)
}
return(msg)
}
</syntaxhighlight>
{{out}}
<pre>
'C:\TEMP3' is an empty directory
'C:\NOTHERE' does not exist
'C:\AWK\FILENAME' is a file
'C:\WINDOWS' is a directory with 98 entries
</pre>
=={{header|BASIC}}==
==={{header|BaCon}}===
<syntaxhighlight lang="basic">FUNCTION check$(dir$)
IF FILEEXISTS(dir$) THEN
RETURN IIF$(LEN(WALK$(dir$, 127, ".+", FALSE)), " is NOT empty.", " is empty." )
ELSE
RETURN " doesn't exist."
ENDIF
ENDFUNCTION
dir$ = "bla"
PRINT "Directory '", dir$, "'", check$(dir$)
dir$ = "/mnt"
PRINT "Directory '", dir$, "'", check$(dir$)
dir$ = "."
PRINT "Directory '", dir$, "'", check$(dir$)</syntaxhighlight>
{{out}}
<pre>Directory 'bla' doesn't exist.
Directory '/mnt' is empty.
Directory '.' is NOT empty.</pre>
=={{header|Batch File}}==
This demo verifies first if the directory exists. This script returns errorlevel code:
*0 - input directory is empty.
*1 - input directory is NOT empty.
*2 - input directory does not exist.
*3 - input not found.
<syntaxhighlight lang="dos">@echo off
if "%~1"=="" exit /b 3
set "samp_path=%~1"
set "tst_var="
%== Store the current directory of the CMD ==%
for /f %%T in ('cd') do set curr_dir=%%T
%== Go to the samp_path ==%
cd %samp_path% 2>nul ||goto :folder_not_found
%== The current directory is now samp_path ==%
%== Scan what is inside samp_path ==%
for /f "usebackq delims=" %%D in (
`dir /b 2^>nul ^& dir /b /ah 2^>nul`
) do set "tst_var=1"
if "%tst_var%"=="1" (
echo "%samp_path%" is NOT empty.
cd %curr_dir%
exit /b 1
) else (
echo "%samp_path%" is empty.
cd %curr_dir%
exit /b 0
)
:folder_not_found
echo Folder not found.
exit /b 2</syntaxhighlight>
{{Out|Sample Session}}
(Saved the Batch File as IsEmpty.Bat in C:\)
<pre>C:\>IsEmpty
C:\>echo %errorlevel%
3
C:\>IsEmpty "C:\Sample"
Folder not found.
C:\>md Sample
C:\>IsEmpty "C:\Sample"
"C:\Sample" is empty.
C:\>cd Sample
C:\Sample>echo 0123456789 >>digits.txt
C:\Sample>dir /b
digits.txt
C:\Sample>cd..
C:\>IsEmpty "C:\Sample"
"C:\Sample" is NOT empty.
C:\></pre>
=={{header|BBC BASIC}}==
{{works with|BBC BASIC for Windows}}
<syntaxhighlight lang="bbcbasic"> IF FNisdirectoryempty("C:\") PRINT "C:\ is empty" ELSE PRINT "C:\ is not empty"
IF FNisdirectoryempty("C:\temp") PRINT "C:\temp is empty" ELSE PRINT "C:\temp is not empty"
END
DEF FNisdirectoryempty(dir$)
LOCAL dir%, sh%, res%
DIM dir% LOCAL 317
IF RIGHT$(dir$)<>"\" dir$ += "\"
SYS "FindFirstFile", dir$+"*", dir% TO sh%
IF sh% = -1 ERROR 100, "Directory doesn't exist"
res% = 1
REPEAT
IF $$(dir%+44)<>"." IF $$(dir%+44)<>".." EXIT REPEAT
SYS "FindNextFile", sh%, dir% TO res%
UNTIL res% == 0
SYS "FindClose", sh%
= (res% == 0)</syntaxhighlight>
=={{header|C}}==
<
#include <dirent.h>
#include <string.h>
int dir_empty(const char *path)
{
struct dirent *ent;
Line 43 ⟶ 333:
return 0;
}</
% mkdir stuff; ./a.out /usr/ ./stuff /etc/passwd
/usr/: not empty
Line 49 ⟶ 339:
/etc/passwd: Not a directory
</pre>
=={{header|C sharp|C#}}==
<syntaxhighlight lang="csharp">using System;
using System.IO;
class Program
{
static void Main( string[] args )
{
foreach ( string dir in args )
{
Console.WriteLine( "'{0}' {1} empty", dir, IsDirectoryEmpty( dir ) ? "is" : "is not" );
}
}
private static bool IsDirectoryEmpty( string dir )
{
return ( Directory.GetFiles( dir ).Length == 0 &&
Directory.GetDirectories( dir ).Length == 0 );
}
}
</syntaxhighlight>
Running it:<pre>
Assume c:\temp exists and is not empty, c:\temp\empty exists and is empty
c:\>IsEmptyDir c:\temp c:\temp\empty
'c:\temp' is not empty
'c:\temp\empty' is empty
</pre>
=={{header|C++}}==
{{libheader|Boost}}
<syntaxhighlight lang="cpp">
#include <iostream>
#include <boost/filesystem.hpp>
using namespace boost::filesystem;
int main(int argc, char *argv[])
{
for (int i = 1; i < argc; ++i) {
path p(argv[i]);
if (exists(p) && is_directory(p))
std::cout << "'" << argv[i] << "' is" << (!is_empty(p) ? " not" : "") << " empty\n";
else
std::cout << "dir '" << argv[i] << "' could not be found\n";
}
}
</syntaxhighlight>
=={{header|Clojure}}==
<syntaxhighlight lang="clojure">(require '[clojure.java.io :as io])
(defn empty-dir? [path]
(let [file (io/file path)]
(assert (.exists file))
(assert (.isDirectory file))
(-> file .list empty?))) ; .list ignores "." and ".."</syntaxhighlight>
=={{header|CoffeeScript}}==
<
fs = require 'fs'
Line 59 ⟶ 407:
fns = fs.readdirSync dir
fns.length == 0
</syntaxhighlight>
=={{header|Common Lisp}}==
Will also return <code>T</code> if <code>path</code> doesn't exist.
<syntaxhighlight lang="lisp">
(defun empty-directory-p (path)
(and (null (directory (concatenate 'string path "/*")))
(null (directory (concatenate 'string path "/*/")))))
</syntaxhighlight>
=={{header|D}}==
<syntaxhighlight lang="d">import std.stdio, std.file;
void main() {
auto dir = "somedir";
writeln(dir ~ " is empty: ", dirEmpty(dir));
}
bool dirEmpty(string dirname) {
if (!exists(dirname) || !isDir(dirname))
throw new Exception("dir not found: " ~ dirname);
return dirEntries(dirname, SpanMode.shallow).empty;
}</syntaxhighlight>
<pre>somedir is empty: false</pre>
=={{header|Delphi}}==
{{libheader| System.SysUtils}}
{{libheader| System.IOUtils}}
{{Trans|C#}}
<syntaxhighlight lang="delphi">
program Empty_directory;
{$APPTYPE CONSOLE}
uses
System.SysUtils,
System.IOUtils;
function IsDirectoryEmpty(dir: string): Boolean;
var
count: Integer;
begin
count := Length(TDirectory.GetFiles(dir)) + Length(TDirectory.GetDirectories(dir));
Result := count = 0;
end;
var
i: Integer;
const
CHECK: array[Boolean] of string = (' is not', ' is');
begin
if ParamCount > 0 then
for i := 1 to ParamCount do
Writeln(ParamStr(i), CHECK[IsDirectoryEmpty(ParamStr(i))], ' empty');
Readln;
end.</syntaxhighlight>
{{out}}
The same of c#.
=={{header|Elixir}}==
<syntaxhighlight lang="elixir">path = hd(System.argv)
IO.puts File.dir?(path) and Enum.empty?( File.ls!(path) )</syntaxhighlight>
=={{header|Erlang}}==
From the Erlang shell, or in a program, match {ok, []}. It this works the directory is empty.
{{out}}
<pre>
3> {ok, []} = file:list_dir_all("/usr").
** exception error: no match of right hand side value
{ok,["X11R6","X11","standalone","share","sbin","local",
"libexec","lib","bin"]}
4> {ok, []} = file:list_dir_all("/asd").
** exception error: no match of right hand side value {error,enoent}
5> {ok, []} = file:list_dir_all("./empty").
{ok,[]}
</pre>
=={{header|F_Sharp|F#}}==
<syntaxhighlight lang="fsharp">open System.IO
let isEmptyDirectory x = (Directory.GetFiles x).Length = 0 && (Directory.GetDirectories x).Length = 0</syntaxhighlight>
=={{header|Factor}}==
<syntaxhighlight lang="factor">USE: io.directories
: empty-directory? ( path -- ? ) directory-entries empty? ;</syntaxhighlight>
=={{header|FreeBASIC}}==
<syntaxhighlight lang="freebasic">' FB 1.05.0 Win64
#Include "dir.bi"
Function IsDirEmpty(dirPath As String) As Boolean
Err = 0
' check dirPath is a valid directory
Dim As String fileName = Dir(dirPath, fbDirectory)
If Len(fileName) = 0 Then
Err = 1000 ' dirPath is not a valid path
Return False
End If
' now check if there are any files/subdirectories in it other than . and ..
Dim fileSpec As String = dirPath + "\*.*"
Const attribMask = fbNormal Or fbHidden Or fbSystem Or fbDirectory
Dim outAttrib As UInteger
fileName = Dir(fileSpec, attribMask, outAttrib) ' get first file
Do
If fileName <> ".." AndAlso fileName <> "." Then
If Len(fileName) = 0 Then Return True
Exit Do
End If
fileName = Dir ' get next file
Loop
Return False
End Function
Dim outAttrib As UInteger
Dim dirPath As String = "c:\freebasic\docs" ' known to be empty
Dim empty As Boolean = IsDirEmpty(dirPath)
Dim e As Long = Err
If e = 1000 Then
Print "'"; dirPath; "' is not a valid directory"
End
End If
If empty Then
Print "'"; dirPath; "' is empty"
Else
Print "'"; dirPath; "' is not empty"
End If
Print
Print "Press any key to quit"
Sleep</syntaxhighlight>
{{out}}
<pre>
'c:\freebasic\docs' is empty
</pre>
=={{header|FutureBasic}}==
<syntaxhighlight lang="futurebasic">
include "NSLog.incl"
local fn DirectoryContents( url as CFURLRef ) as CFArrayRef
CFArrayRef contents = fn FileManagerContentsOfDirectoryAtURL( url, NULL, NSDirectoryEnumerationSkipsHiddenFiles )
if ( contents == NULL )
NSLog(@"Unable to get contents of directory \"%@\".",fn URLLastPathComponent(url))
end if
end fn = fn ArrayValueForKey( contents, @"lastPathComponent" )
void local fn DoIt
CFURLRef dirURL, fileURL
CFArrayRef contents
dirURL = fn URLFileURLWithPath( fn StringByExpandingTildeInPath( @"~/Desktop/docs" ) )
if ( fn FileManagerCreateDirectoryAtURL( dirURL, YES, NULL ) )
contents = fn DirectoryContents( dirURL )
if ( contents )
NSLog(@"Directory \"docs\" \b")
if ( len(contents) )
NSLog(@"contents:\n%@",contents)
else
NSLog(@"is empty.")
end if
NSLog(@"")
fileURL = fn URLFileURLWithPath( fn StringByExpandingTildeInPath( @"~/Desktop/docs/output.txt" ) )
if (fn FileManagerCreateFileAtURL( fileURL, NULL, NULL ) )
contents = fn DirectoryContents( dirURL )
NSLog(@"Directory \"docs\" \b")
if ( len(contents) )
NSLog(@"contents:\n%@",contents)
else
NSLog(@"is empty.")
end if
end if
end if
end if
end fn
fn DoIt
HandleEvents
</syntaxhighlight>
{{out}}
<pre>
Directory "docs" is empty.
Directory "docs" contents:
(
"output.txt"
)
</pre>
=={{header|Gambas}}==
<syntaxhighlight lang="gambas">Public Sub Main()
Dim sFolder As String = User.home &/ "Rosetta"
Dim sDir As String[] = Dir(sFolder)
Dim sTemp As String
Dim sOutput As String = sfolder & " is NOT empty"
Try sTemp = sDir[0]
If Error Then sOutput = sfolder & " is empty"
Print sOutput
End</syntaxhighlight>
Output:
<pre>
/home/charlie/Rosetta is empty
</pre>
=={{header|Go}}==
<syntaxhighlight lang="go">package main
import (
"fmt"
"io/ioutil"
"log"
)
func main() {
empty, err := IsEmptyDir("/tmp")
if err != nil {
log.Fatalln(err)
}
if empty {
fmt.Printf("/tmp is empty\n")
} else {
fmt.Printf("/tmp is not empty\n")
}
}
func IsEmptyDir(name string) (bool, error) {
entries, err := ioutil.ReadDir(name)
if err != nil {
return false, err
}
return len(entries) == 0, nil
}
</syntaxhighlight>
=={{header|Groovy}}==
Solution:
<
def dir = new File(dirName)
dir.exists() && dir.directory && (dir.list() as List).empty
}</
Test:
<
def random = new Random()
def subDirName = "dir${random.nextInt(100000)}"
Line 77 ⟶ 666:
assert ! isDirEmpty('.')
assert isDirEmpty(subDirName)</
=={{header|Haskell}}==
<syntaxhighlight lang="haskell">import System.Directory (getDirectoryContents)
import System.Environment (getArgs)
isEmpty x = getDirectoryContents x >>= return . f . (== [".", ".."])
where f True = "Directory is empty"
f False = "Directory is not empty"
main = getArgs >>= isEmpty . (!! 0) >>= putStrLn</syntaxhighlight>
Test:
<syntaxhighlight lang="text">$ mkdir 1
$ ./isempty 1
Directory is empty
$ ./isempty /usr/
Directory is not empty</syntaxhighlight>
==Icon and {{header|Unicon}}==
This example uses Unicon extensions. The 'empty' sub-directory was manually setup for this test.
<
every dir := "." | "./empty" do
write(dir, if isdirempty(dir) then " is empty" else " is not empty")
Line 95 ⟶ 702:
}
else stop(s," is not a directory or will not open")
end</
{{out}}
<pre>. is not empty
./empty is empty</pre>
=={{header|J}}==
<
empty_dir=: 0 = '/*' #@dir@,~ ]</
In other words, list the contents of the directory, count how many items are in it, and test if that count was zero.
Note that <code>1!:
Example, under windows, create some directories using cygwin:
<
$ touch /tmp/a/...
$ mkdir /tmp/b
$ mkdir /tmp/c
$ mkdir /tmp/c/d</
Then, testing these directories, in J:
<
0
empty_dir 'c:/cygwin/tmp/b'
1
empty_dir 'c:/cygwin/tmp/c'
0</
=={{header|Java}}==
{{works with|Java|7+}}
This method does not check that the path given is actually a directory. If a path to a normal file is given, it will throw a <code>NullPointerException</code>. <code>File.listFiles()</code> does not count the "." and ".." entries.
<
//... other class code here
public static boolean isEmptyDir(String dirName){
return Paths.get(dirName).toFile().listFiles().length == 0;
}</
=={{header|JavaScript}}==
The ECMAScript standard itself defines no IO interface – the following example makes use of the Node.js file IO library.
{{Works with|Node.js}}
<syntaxhighlight lang="javascript">// Node.js v14.15.4
const { readdirSync } = require("fs");
const emptydir = (path) => readdirSync(path).length == 0;
// tests, run like node emptydir.js [directories]
for (let i = 2; i < process.argv.length; i ++) {
let dir = process.argv[i];
console.log(`${dir}: ${emptydir(dir) ? "" : "not "}empty`)
}</syntaxhighlight>
=={{header|Julia}}==
<syntaxhighlight lang="julia"># v0.6.0
isemptydir(dir::AbstractString) = isempty(readdir(dir))
@show isemptydir(".")
@show isemptydir("/home")
</syntaxhighlight>
{{out}}
<pre>
isemptydir(".") = false
isemptydir("/home") = false
</pre>
=={{header|Kotlin}}==
<syntaxhighlight lang="scala">// version 1.1.4
import java.io.File
fun main(args: Array<String>) {
val dirPath = "docs" // or whatever
val isEmpty = (File(dirPath).list().isEmpty())
println("$dirPath is ${if (isEmpty) "empty" else "not empty"}")
}</syntaxhighlight>
=={{header|Lasso}}==
<syntaxhighlight lang="lasso">dir('has_content') -> isEmpty
'<br />'
dir('no_content') -> isEmpty</syntaxhighlight>
{{out}}
<pre>false
true</pre>
=={{header|Liberty BASIC}}==
<syntaxhighlight lang="lb">
dim info$(10, 10)
files "c:\", info$()
qtyFiles=val(info$(0,0))
n = qtyFiles+1 'begin directory info
folder$ = info$(n,0) 'path to first directory in c:
files folder$, info$() 're-fill array with data from sub folder
if val(info$(0,0)) + val(info$(0, 1)) <> 0 then
print "Folder ";folder$;" is not empty."
else
print "Folder ";folder$;" is empty."
end if
</syntaxhighlight>
=={{header|Lingo}}==
<syntaxhighlight lang="lingo">on isDirEmpty (dir)
return getNthFileNameInFolder(dir, 1) = EMPTY
end</syntaxhighlight>
=={{header|Lua}}==
Pure Lua function based on snipplet from Stack Overflow[http://stackoverflow.com/questions/5303174/how-to-get-list-of-directories-in-lua#11130774].
<syntaxhighlight lang="lua">
function scandir(directory)
local i, t, popen = 0, {}, io.popen
local pfile = popen('ls -a "'..directory..'"')
for filename in pfile:lines() do
if filename ~= '.' and filename ~= '..' then
i = i + 1
t[i] = filename
end
end
pfile:close()
return t
end
function isemptydir(directory)
return #scandir(directory) == 0
end
</syntaxhighlight>
Using lfs[https://keplerproject.github.io/luafilesystem/] library.
<syntaxhighlight lang="lua">
function isemptydir(directory,nospecial)
for filename in require('lfs').dir(directory) do
if filename ~= '.' and filename ~= '..' then
return false
end
end
return true
end
</syntaxhighlight>
=={{header|Maple}}==
<syntaxhighlight lang="maple">
emptydirectory := proc (dir)
is(listdir(dir) = [".", ".."]);
end proc;
</syntaxhighlight>
=={{header|Mathematica}} / {{header|Wolfram Language}}==
<syntaxhighlight lang="mathematica">EmptyDirectoryQ[x_] := (SetDirectory[x]; If[FileNames[] == {}, True, False])
Example use:
EmptyDirectoryQ["C:\\Program Files\\Wolfram Research\\Mathematica\\9"]
->True</syntaxhighlight>
=={{header|MATLAB}} / {{header|Octave}}==
<syntaxhighlight lang="matlab">
function x = isEmptyDirectory(p)
if isdir(p)
f = dir(p)
x = length(f)>2;
else
error('Error: %s is not a directory');
end;
end;
</syntaxhighlight>
=={{header|min}}==
{{works with|min|0.19.3}}
<syntaxhighlight lang="min">(ls bool not) :empty-dir?</syntaxhighlight>
=={{header|MS-DOS}}==
Since you cannot remove a directory that isn't empty, one way to check is to attempt to remove it.
<syntaxhighlight lang="dos">C:\>rd GAMES
Unable to remove: GAMES.
C:\></syntaxhighlight>
=={{header|Nanoquery}}==
<syntaxhighlight lang="nanoquery">def isempty(dirname)
return len(new(Nanoquery.IO.File).listDir(dirname)) = 0
end</syntaxhighlight>
=={{header|Nemerle}}==
<syntaxhighlight lang="nemerle">using System.IO;
using System.Console;
module EmptyDirectory
{
IsDirectoryEmpty(dir : string) : bool
{
Directory.GetFileSystemEntries(dir).Length == 0
}
Main(args : array[string]) : void
{
foreach (dir in args) {
when (Directory.Exists(dir)) {
WriteLine("{0} {1} empty.", dir, if (IsDirectoryEmpty(dir)) "is" else "is not");
}
}
}
}</syntaxhighlight>
=={{header|NewLISP}}==
<syntaxhighlight lang="newlisp">
(define (empty-dir? path-to-check)
(empty? (clean (lambda (x) (or (= "." x) (= ".." x))) (directory path-to-check)))
)
</syntaxhighlight>
=={{header|Nim}}==
<syntaxhighlight lang="nim">import os, rdstdin
var empty = true
for f in walkDir(readLineFromStdin "directory: "):
empty = false
break
echo empty</syntaxhighlight>
Alternatively:
<syntaxhighlight lang="nim">import os, sequtils
proc isEmptyDir(dir: string): bool =
toSeq(walkdir dir).len == 0
echo isEmptyDir("/tmp") # false - there is always something in "/tmp"
echo isEmptyDir("/temp") # true - "/temp" does not exist</syntaxhighlight>
=={{header|Objeck}}==
<syntaxhighlight lang="objeck">function : IsEmptyDirectory(dir : String) ~ Bool {
return Directory->List(dir)->Size() = 0;
}</syntaxhighlight>
=={{header|OCaml}}==
<syntaxhighlight lang="ocaml">let is_dir_empty d =
Sys.readdir d = [| |]</syntaxhighlight>
=={{header|ooRexx}}==
<syntaxhighlight lang="oorexx">Call test 'D:\nodir' /* no such directory */
Call test 'D:\edir' /* an empty directory */
Call test 'D:\somedir' /* directory with 2 files */
Call test 'D:\somedir','S' /* directory with 3 files */
Exit
test: Parse Arg fd,nest
If SysIsFileDirectory(fd)=0 Then
Say 'Directory' fd 'not found'
Else Do
ret=SysFileTree(fd'\*.*','X', 'F'nest)
If x.0=0 Then
say 'Directory' fd 'is empty'
Else Do
If nest='' Then
say 'Directory' fd 'contains' x.0 'files'
Else
say 'Directory' fd 'contains' x.0 'files (some nested)'
End
End
Return</syntaxhighlight>
{{out}}
<pre>Directory D:\nodir not found
Directory D:\edir is empty
Directory D:\somedir contains 2 files
Directory D:\somedir contains 3 files (some nested)</pre>
=={{header|PARI/GP}}==
Define a function ''chkdir(<path>)'' that returns count of entries in a directory (without . and .. ):
<syntaxhighlight lang="parigp">chkdir(d)=extern(concat(["[ -d '",d,"' ]&&ls -A '",d,"'|wc -l||echo -1"]))</syntaxhighlight>
On error ''chkdir(...)'' returns -1 else count of entries. If ''chkdir() == 0'' then directory is empty. So define an additional function:
<syntaxhighlight lang="parigp">dir_is_empty(d)=!chkdir(d)</syntaxhighlight>
Output:<pre>chkdir("/tmp"): 52
dir_is_empty("/tmp"): 0</pre>
=={{header|Pascal}}==
{{works with|GNU Pascal}}
Pascal does not know the notion of directories.
Therefore it is ''not possible'' to determine whether a directory is empty.
However, ''GNU Pascal'' provides certain extensions to [[Extended Pascal]] (ISO 10206) so it is possible nonetheless.
Note, the following solution works only on ''strictly hierarchical'' file systems.
<syntaxhighlight lang="pascal">program emptyDirectory(input, output);
type
path = string(1024);
{
\brief determines whether a (hierarchial FS) directory is empty
\param accessVia a possible route to access a directory
\return whether \param accessVia is an empty directory
}
function isEmptyDirectory(protected accessVia: path): Boolean;
var
{ NB: `file` data types without a domain type are non-standard }
directory: bindable file;
FD: bindingType;
begin
{ initialize variables }
unbind(directory);
FD := binding(directory);
FD.name := accessVia;
{ binding to directories is usually not possible }
FD.force := true;
{ the actual test }
bind(directory, FD);
FD := binding(directory);
unbind(directory);
isEmptyDirectory := FD.bound and FD.directory and (FD.links <= 2)
end;
{ === MAIN ============================================================= }
var
s: path;
begin
readLn(s);
writeLn(isEmptyDirectory(s))
end.</syntaxhighlight>
Note, symbolic links’ targets are resolved, so <tt>accessVia</tt> could in fact be a symbolic link ''to'' an empty directory.
=={{header|Perl}}==
===Simple version===
<syntaxhighlight lang="perl">sub dir_is_empty {!<$_[0]/*>}</syntaxhighlight>
This version however doesn't catch 'hidden' files that start with a dot.
May be good for quick one-liners or in some special cases when you are sure that there are no 'hidden' files or they doesn't play any role.
Unfortunalety, BSD glob() doesn't handle inverted character class. If it did, this pattern could be used: <tt>{.[^.],}*</tt> (this works well in bash). But it doesn't, so there's a
===Thorough version===
<syntaxhighlight lang="perl">use IO::Dir;
sub dir_is_empty { !grep !/^\.{1,2}\z/, IO::Dir->new(@_)->read }</syntaxhighlight>
=={{header|Phix}}==
<!--<syntaxhighlight lang="phix">(notonline)-->
<span style="color: #008080;">without</span> <span style="color: #008080;">js</span> <span style="color: #000080;font-style:italic;">-- file i/o</span>
<span style="color: #008080;">procedure</span> <span style="color: #000000;">test</span><span style="color: #0000FF;">(</span><span style="color: #004080;">string</span> <span style="color: #000000;">filename</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">string</span> <span style="color: #000000;">msg</span>
<span style="color: #008080;">switch</span> <span style="color: #7060A8;">get_file_type</span><span style="color: #0000FF;">(</span><span style="color: #000000;">filename</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
<span style="color: #008080;">case</span> <span style="color: #000000;">FILETYPE_UNDEFINED</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">msg</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"is UNDEFINED"</span>
<span style="color: #008080;">case</span> <span style="color: #000000;">FILETYPE_NOT_FOUND</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">msg</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"is NOT_FOUND"</span>
<span style="color: #008080;">case</span> <span style="color: #004600;">FILETYPE_FILE</span><span style="color: #0000FF;">:</span> <span style="color: #000000;">msg</span> <span style="color: #0000FF;">=</span> <span style="color: #008000;">"is a FILE"</span>
<span style="color: #008080;">case</span> <span style="color: #004600;">FILETYPE_DIRECTORY</span><span style="color: #0000FF;">:</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">count</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">filter</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">vslice</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">dir</span><span style="color: #0000FF;">(</span><span style="color: #000000;">filename</span><span style="color: #0000FF;">),</span><span style="color: #004600;">D_NAME</span><span style="color: #0000FF;">),</span><span style="color: #008000;">"out"</span><span style="color: #0000FF;">,{</span><span style="color: #008000;">"."</span><span style="color: #0000FF;">,</span><span style="color: #008000;">".."</span><span style="color: #0000FF;">}))</span>
<span style="color: #000000;">msg</span> <span style="color: #0000FF;">=</span> <span style="color: #008080;">iff</span><span style="color: #0000FF;">(</span><span style="color: #000000;">count</span><span style="color: #0000FF;">=</span><span style="color: #000000;">0</span><span style="color: #0000FF;">?</span><span style="color: #008000;">"is an empty directory"</span>
<span style="color: #0000FF;">:</span><span style="color: #7060A8;">sprintf</span><span style="color: #0000FF;">(</span><span style="color: #008000;">"is a directory containing %d files"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">count</span><span style="color: #0000FF;">}))</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">switch</span>
<span style="color: #7060A8;">printf</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"%s %s\n"</span><span style="color: #0000FF;">,{</span><span style="color: #000000;">filename</span><span style="color: #0000FF;">,</span><span style="color: #000000;">msg</span><span style="color: #0000FF;">})</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">procedure</span>
<span style="color: #008080;">constant</span> <span style="color: #000000;">tests</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"C:\\xx"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"C:\\not_there"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"C:\\Program Files (x86)\\Phix\\p.exe"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"C:\\Windows"</span><span style="color: #0000FF;">}</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">test</span><span style="color: #0000FF;">(</span><span style="color: #000000;">tests</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">])</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<!--</syntaxhighlight>-->
{{out}}
<pre>
C:\xx is an empty directory
C:\not_there is NOT_FOUND
C:\Program Files (x86)\Phix\p.exe is a FILE
C:\Windows is a directory containing 110 files
</pre>
=={{header|PHP}}==
Any improvements welcome but here is a starting point for PHP
<syntaxhighlight lang="php">
$dir = 'path_here';
if(is_dir($dir)){
//scandir grabs the contents of a directory and array_diff is being used to filter out .. and .
$list = array_diff(scandir($dir), array('..', '.'));
//now we can just use empty to check if the variable has any contents regardless of it's type
if(empty($list)){
echo 'dir is empty';
}
else{
echo 'dir is not empty';
}
}
else{
echo 'not a directory';
}
</syntaxhighlight>
=={{header|PicoLisp}}==
<
{{out}}
<pre>myDir is not empty</pre>
=={{header|PowerShell}}==
{{works with|PowerShell|4.0}}
<syntaxhighlight lang="powershell">
$path = "C:\Users"
if((Dir $path).Count -eq 0) {
"$path is empty"
} else {
"$path is not empty"
}
</syntaxhighlight>
<b>Output:</b>
<pre>
C:\Users is not empty
</pre>
=={{header|Prolog}}==
<syntaxhighlight lang="prolog">non_empty_file('.').
non_empty_file('..').
empty_dir(Dir) :-
directory_files(Dir, Files),
maplist(non_empty_file, Files).</syntaxhighlight>
=={{header|PureBasic}}==
<
If Right(path$, 1) <> "\": path$ + "\": EndIf
Protected dirID = ExamineDirectory(#PB_Any, path$, "*.*")
Line 169 ⟶ 1,158:
EndIf
MessageRequester("Empty directory test", #DQUOTE$ + path$ + #DQUOTE$ + result$)
EndIf </
<pre>"L:\vv\6\" is empty.
Line 177 ⟶ 1,166:
=={{header|Python}}==
{{works with|Python|2.x}}
<
if os.listdir(raw_input("directory")):
print "not empty"
else:
print "empty"
</syntaxhighlight>
=={{header|R}}==
<syntaxhighlight lang="r">
is_dir_empty <- function(path){
if(length(list.files(path)) == 0)
print("This folder is empty")
}
is_dir_empty(path)
</syntaxhighlight>
=={{header|Racket}}==
<syntaxhighlight lang="racket">
#lang racket
(empty? (directory-list "some-directory"))
</syntaxhighlight>
=={{header|Raku}}==
(formerly Perl 6)
<syntaxhighlight lang="raku" line>sub dir-is-empty ($d) { not dir $d }</syntaxhighlight>
The <tt>dir</tt> function returns a lazy list of filenames, excluding "<tt>.</tt>" and "<tt>..</tt>" automatically. Any boolean context (in this case the <tt>not</tt> function) will do just enough work on the lazy list to determine whether there are any elements, so we don't have to count the directory entries, or even read them all into memory, if there are more than one buffer's worth.
=={{header|REXX}}==
{{works with|Regina}}
The following program was tested in a DOS window under Windows/XP and should work for all Microsoft Windows.
<syntaxhighlight lang="rexx">/*REXX pgm checks to see if a directory is empty; if not, lists entries.*/
parse arg xdir; if xdir='' then xdir='\someDir' /*Any DIR? Use default.*/
@.=0 /*default in case ADDRESS fails. */
trace off /*suppress REXX err msg for fails*/
address system 'DIR' xdir '/b' with output stem @. /*issue the DIR cmd.*/
if rc\==0 then do /*an error happened?*/
say '***error!*** from DIR' xDIR /*indicate que pasa.*/
say 'return code=' rc /*show the ret Code.*/
exit rc /*exit with the RC.*/
end /* [↑] bad address.*/
#=@.rc /*number of entries.*/
if #==0 then #=' no ' /*use a word, ¬zero.*/
say center('directory ' xdir " has " # ' entries.',79,'─')
exit @.0+rc /*stick a fork in it, we're done.*/</syntaxhighlight>
{{out}} when the following input was used: <tt> temp </tt>
<pre>
──────────────────────directory temp has 10 entries.───────────────────────
</pre>
{{out}} when the following input was used: <tt> \someDir </tt>
<pre>
───────────────────directory \someDir has no entries.───────────────────
</pre>
=={{header|Ring}}==
<syntaxhighlight lang="ring">
myList = dir("C:\Ring\bin")
if len(myList) > 0 see "C:\Ring\bin is not empty" + nl
else see "C:\Ring\bin is empty" + nl ok
</syntaxhighlight>
=={{header|RPL}}==
≪ 1 OVER SIZE '''FOR''' j
DUP j GET EVAL
'''NEXT''' DROP
VARS SIZE NOT
≫ ''''MTDIR'''' STO
{{in}}
<pre>
{ HOME °RZTA °TEST } MTDIR
</pre>
{{out}}
<pre>
1: 0
</pre>
=={{header|Ruby}}==
Raises a SystemCallError if the named directory doesn’t exist.
<syntaxhighlight lang="ruby">Dir.entries("testdir").empty? </syntaxhighlight>
=={{header|Run BASIC}}==
<syntaxhighlight lang="runbasic">files #f, DefaultDir$ + "\*.*" ' open some directory.
print "hasanswer: ";#f HASANSWER() ' if it has an answer it is not MT
print "rowcount: ";#f ROWCOUNT() ' if not MT, how many files?</syntaxhighlight>
=={{header|Rust}}==
<syntaxhighlight lang="rust">use std::fs::read_dir;
use std::error::Error;
fn main() {
for path in std::env::args().skip(1) { // iterate over the arguments, skipping the first (which is the executable)
match read_dir(path.as_str()) { // try to read the directory specified
Ok(contents) => {
let len = contents.collect::<Vec<_>>().len(); // calculate the amount of items in the directory
if len == 0 {
println!("{} is empty", path);
} else {
println!("{} is not empty", path);
}
},
Err(e) => { // If the attempt failed, print the corresponding error msg
println!("Failed to read directory \"{}\": {}", path, e.description());
}
}
}
}</syntaxhighlight>
=={{header|Scala}}==
<syntaxhighlight lang="scala">import java.io.File
def isDirEmpty(file:File) : Boolean =
return file.exists && file.isDirectory && file.list.isEmpty</syntaxhighlight>
=={{header|Seed7}}==
<syntaxhighlight lang="seed7">$ include "seed7_05.s7i";
include "osfiles.s7i";
const func boolean: dirEmpty (in string: dirName) is
return fileType(dirName) = FILE_DIR and length(readDir(dirName)) = 0;
const proc: main is func
begin
writeln(dirEmpty("somedir"));
end func;</syntaxhighlight>
=={{header|SenseTalk}}==
The filesAndFolders function returns an empty list if a directory is empty (and does not return '.' or '..').
<syntaxhighlight lang="sensetalk">put the temporary folder & "NewFolder" into newFolderPath
make folder newFolderPath -- create a new empty directory
if the filesAndFolders in newFolderPath is empty then
put "Directory " & newFolderPath & " is empty!"
else
put "Something is present in " & newFolderPath
end if
</syntaxhighlight>
{{out}}
<pre>
Directory /var/folders/dp/0nmm3z4m8xl5m3008k8db78h0000gn/T/NewFolder is empty!
</pre>
=={{header|Sidef}}==
Built-in method:
<syntaxhighlight lang="ruby">Dir.new('/my/dir').is_empty; # true, false or nil</syntaxhighlight>
User-defined function:
<syntaxhighlight lang="ruby">func is_empty(dir) {
dir.open(\var dir_h) || return nil;
dir_h.each { |file|
file ~~ ['.', '..'] && next;
return false;
};
return true;
};</syntaxhighlight>
=={{header|Standard ML}}==
<syntaxhighlight lang="sml">fun isDirEmpty(path: string) =
let
val dir = OS.FileSys.openDir path
val dirEntryOpt = OS.FileSys.readDir dir
in
(
OS.FileSys.closeDir(dir);
case dirEntryOpt of
NONE => true
| _ => false
)
end;</syntaxhighlight>
=={{header|Tcl}}==
<
# Get list of _all_ files in directory
set filenames [glob -nocomplain -tails -directory $dir * .*]
# Check whether list is empty (after filtering specials)
expr {![llength [lsearch -all -not -regexp $filenames {^\.\.?$}]]}
}</
=={{header|UNIX Shell}}==
<syntaxhighlight lang="bash">
#!/bin/sh
DIR=/tmp/foo
[ `ls -a $DIR|wc -l` -gt 2 ] && echo $DIR is NOT empty || echo $DIR is empty
</syntaxhighlight>
=={{header|VBA}}==
<syntaxhighlight lang="vb">Sub Main()
Debug.Print IsEmptyDirectory("C:\Temp")
Debug.Print IsEmptyDirectory("C:\Temp\")
End Sub
Private Function IsEmptyDirectory(D As String) As Boolean
Dim Sep As String
Sep = Application.PathSeparator
D = IIf(Right(D, 1) <> Sep, D & Sep, D)
IsEmptyDirectory = (Dir(D & "*.*") = "")
End Function</syntaxhighlight>
=={{header|VBScript}}==
<syntaxhighlight lang="vb">
Function IsDirEmpty(path)
IsDirEmpty = False
Set objFSO = CreateObject("Scripting.FileSystemObject")
Set objFolder = objFSO.GetFolder(path)
If objFolder.Files.Count = 0 And objFolder.SubFolders.Count = 0 Then
IsDirEmpty = True
End If
End Function
'Test
WScript.StdOut.WriteLine IsDirEmpty("C:\Temp")
WScript.StdOut.WriteLine IsDirEmpty("C:\Temp\test")
</syntaxhighlight>
{{Out}}
<pre>
False
True
</pre>
=={{header|V (Vlang)}}==
<syntaxhighlight lang="v (vlang)">import os
fn main() {
println(is_empty_dir('../Check'))
}
fn is_empty_dir(name string) string {
if os.is_dir(name) == false {return 'Directory name not exist!'}
if os.is_dir(name) && os.is_dir_empty(name) == true {return 'Directory exists and is empty!'}
return 'Directory not empty!'
}
</syntaxhighlight>
=={{header|Wren}}==
<syntaxhighlight lang="wren">import "io" for Directory
var isEmptyDir = Fn.new { |path|
if (!Directory.exists(path)) Fiber.abort("Directory at '%(path)' does not exist.")
return Directory.list(path).count == 0
}
var path = "test"
var empty = isEmptyDir.call(path)
System.print("'%(path)' is %(empty ? "empty" : "not empty")")</syntaxhighlight>
{{out}}
'test' is an empty directory I made earlier.
<pre>
'test' is empty
</pre>
=={{header|zkl}}==
<syntaxhighlight lang="zkl">path:="Empty"; File.isDir(path).println();
File.mkdir(path); File.isDir(path).println();
File.glob(path+"/*").println(); // show contents of directory</syntaxhighlight>
{{out}}
<pre>
False
True
L()
</pre>
{{omit from|ACL2}}
{{omit from|TI-83 BASIC|Does not have a filesystem.}}
| |||