Powershell recursive folder comparaison

profile.ps1

<# Goes in Documents\PowerShell\profile.ps1 #>

<# usage: CompareDir -path1 path\to\folder\1 -path2 path\to\folder\2 #>

function Get-Files {
    param (
        [string]$path,
        [string[]]$exclude
    )
	
	if (-not $path) {
		Write-Host "Usage: Get-Files -path <string> (-exclude <string>)"
        return
	}

    foreach ($item in Get-ChildItem -Path $path) {
        if ($excludedFiles -contains $item.Name) { continue }

        if ((Get-Item $item.FullName) -is [System.IO.DirectoryInfo]) {
            Write-Output '[' + $item.Name + ']'
        } else {
            Write-Output $item.Name
        }

        if (Test-Path -Path $item.FullName -PathType Container) {
            Get-Files -path $item.FullName -excludedFiles $exclude
        }
    }
}

function Compare-Dir {
    param (
        [string]$path1,
        [string]$path2
    )

    if (-not $path1 -or -not $path2) {
        Write-Host "Usage: Compare-Dir -path1 <string> -path2 <string>"
        return
    }

    $env1 = Get-Files -path $path1 -exclude @()
    $env2 = Get-Files -path $path2 -exclude @()

	$comparison = Compare-Object -DifferenceObject $env1 -ReferenceObject $env2

    foreach ($difference in $comparison) {
        if ($difference.SideIndicator -eq '=>') {
            $difference.SideIndicator = '-->'
        } elseif ($difference.SideIndicator -eq '<=') {
            $difference.SideIndicator = '<--'
        }
        Write-Output $difference
    }
}