DirSize/DirSize.ps1 at master · coderpros/DirSize · GitHub

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[CmdletBinding()]
param (
        [ValidateNotNullOrEmpty()]
        [string] $Path,
        [Parameter(Mandatory=$false)]
        [switch] $Detailed,
        [Parameter(Mandatory=$false)]
        [switch] $Mb
    )

function Get-DirectorySize {
    [CmdletBinding()]
    param (
        [ValidateNotNullOrEmpty()]
        [string] $Path,
        [Parameter(Mandatory=$false)]
        [bool] $Detailed,
        [Parameter(Mandatory=$false)]
        [bool] $Mb
    )

    if($Detailed) {
        $total_file_count = 0
        $total_file_size = 0

        Get-ChildItem $Path -recurse |  ?{ $_.PSIsContainer } | %{
            try {
                $file_count = [System.IO.Directory]::GetFiles($_.FullName, "*", "AllDirectories").Count
                $file_size = 0

                if($Mb) {
                    $file_size = ((Get-ChildItem $_.FullName -recurse | Measure-Object Length -Sum).sum / 1Mb)

                    "{0:N2} MB | $file_count files `t $_" -f $file_size
                } else {
                    $file_size = ((Get-ChildItem $_.FullName -recurse | Measure-Object Length -Sum).sum / 1Gb)

                    "{0:N2} GB | $file_count files `t $_" -f $file_size
                 }
            }
            catch { }
        }
    }

    $total_file_count = [System.IO.Directory]::GetFiles($Path, "*", "AllDirectories").Count
    $total_file_size  = (([System.IO.DirectoryInfo]$Path).EnumerateFiles("*", 'AllDirectories').Length)

    if($Mb) {
        "{0:N2} MB | {1:N0} files `t $Path" -f (($total_file_size | Measure-Object -Sum).Sum / 1Mb), $total_file_count
    } else {
        "{0:N2} GB | {1:N0} files `t $Path" -f (($total_file_size | Measure-Object -Sum).Sum / 1Gb), $total_file_count
    }

}


Get-DirectorySize -Path $Path -Detailed $Detailed -Mb $Mb