$folder = "D:\share\tech"
$outfile = "D:\out.csv"

$folder = Get-Item -Path $folder
$folderParent = $folder.Parent
$n = $folder.FullName.Length + 1

Push-Location $folder
$List = [System.Collections.ArrayList]@()

Get-ChildItem -Path "*.jpg" -Recurse -Depth 5 | Group-Object Directoryname | ForEach-Object {
	$arr = ( $_.Name.Substring($n) -split "\\" )
	$str1 = ( $arr -join "," ) + ( "," * (5 - $arr.count) )
	$str2 = $_.Count
	$str3 = $_.Group.Name -join ";"
	[void]$List.add( $str1 + "," + $str2 + "," + $str3 )
}

Pop-Location

$List | Out-File -FilePath $outfile -Encoding utf8
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<# :
cls&echo off&cd /d "%~dp0"
path %SYSTEMROOT%\System32\WindowsPowerShell\v1.0;%path%
set "current=%cd%"
powershell -NoProfile -ExecutionPolicy bypass "Get-Content -literal '%~f0'|Out-String|Invoke-Expression"
pause
exit
#>
$current=($env:current).trimend('\');
$depth=5;
$ext=@('.jpg');
$outfile=$current+'\结果.csv';
$s=New-Object -TypeName System.Collections.ArrayList;
[void]$s.add("一级`t二级`t三级`t四级`t五级`t数量`t名称");
$root=New-Object IO.DirectoryInfo($current)
$folders=$root.GetDirectories('*','AllDirectories');
for($i=0;$i -lt $folders.length;$i++){
    $arr=$folders[$i].FullName.Substring($current.length+1).split('\');
    if($arr.length -eq $depth){
        $files=@(dir -literal $folders[$i].FullName|?{($ext -contains $_.Extension) -and ($_ -is [System.IO.FileInfo])})|%{$_.Name};
        $line=$arr -join "`t";
        if($files.length -ge 1){
            $line +="`t"+$files.length+"`t"+'"'+($files -join "`n")+'"';
        }
        [void]$s.add($line);
    }
}
[IO.File]::WriteAllLines($outfile, $s, [Text.Encoding]::GetEncoding('Unicode'));
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