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Powershell/Scripts/clean-repo.ps1

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+<#
+.SYNTAX       clean-repo.ps1 [<repo-dir>]
+.DESCRIPTION  cleans a Git repository from untracked files (including submodules, e.g. for a fresh build)
+.LINK         https://github.com/fleschutz/PowerShell
+.NOTES        Author: Markus Fleschutz / License: CC0
+#>
+
+param($RepoDir = "$PWD")
+
+try {
+	$StopWatch = [system.diagnostics.stopwatch]::startNew()
+
+	if (-not(test-path "$RepoDir" -pathType container)) { throw "Can't access directory: $RepoDir" }
+	$RepoDirName = (get-item "$RepoDir").Name
+
+	"🧹 Cleaning Git repository 📂$RepoDirName from untracked files..."
+
+	$Null = (git --version)
+	if ($lastExitCode -ne "0") { throw "Can't execute 'git' - make sure Git is installed and available" }
+	
+	& git -C "$RepoDir" clean -xfd -f # force + recurse into dirs + don't use the standard ignore rules
+	if ($lastExitCode -ne "0") { throw "'git clean -xfd -f' failed" }
+
+	& git -C "$RepoDir" submodule foreach --recursive git clean -xfd -f
+	if ($lastExitCode -ne "0") { throw "'git clean -xfd -f' in submodules failed" }
+
+	[int]$Elapsed = $StopWatch.Elapsed.TotalSeconds
+	"✔️ cleaned Git repository 📂$RepoDirName in $Elapsed sec"
+	exit 0
+} catch {
+	write-error "⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}