Add check-ps1-file.ps1

Scripts/check-ps1-file.ps1

@@ -0,0 +1,32 @@
+<#
+.SYNOPSIS
+	Checks a PowerShell file for validity
+.DESCRIPTION
+	This PowerShell script checks the given PowerShell file for validity.
+.PARAMETER pattern
+	Specifies the file pattern to the PowerShell file(s) to check
+.EXAMPLE
+	PS> ./check-ps1-file *.ps1
+	✔️ Valid PowerShell in myfile.ps1
+.LINK
+	https://github.com/fleschutz/PowerShell
+.NOTES
+	Author: Markus Fleschutz | License: CC0
+#>
+
+param([string]$pattern = "")
+
+try {
+	if ($pattern -eq "" ) { $path = Read-Host "Enter the file pattern to the PowerShell file(s)" }
+	$files = Get-ChildItem $pattern
+	foreach ($file in $files) {
+		$syntaxError = @()
+		[void][System.Management.Automation.Language.Parser]::ParseFile($file, [ref]$null, [ref]$syntaxError)
+		if ("$syntaxError" -ne "") { throw "$syntaxError" }
+		"✔️ Valid PowerShell in $file"
+	}
+	exit 0 # success
+} catch {
+	"⚠️ Error in line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
+	exit 1
+}