Initial community commit

Src/external_dependencies/openmpt-trunk/build/scriptlib/Verify-File.ps1

@@ -0,0 +1,18 @@
+param([String]$filename="", [Int32]$filesize=0, [String]$hashvalue="", [String]$hashname="SHA512")
+Function Get-FileHashWin7([String] $FileName, $HashName) {
+	$FileStream = New-Object System.IO.FileStream($FileName,[System.IO.FileMode]::Open)
+	$StringBuilder = New-Object System.Text.StringBuilder
+	[System.Security.Cryptography.HashAlgorithm]::Create($HashName).ComputeHash($FileStream)|%{[Void]$StringBuilder.Append($_.ToString("x2"))}
+	$FileStream.Close()
+	$StringBuilder.ToString()
+}
+Write-Output "Verify " $filename
+if ((Get-Item $filename).length -ne $filesize) {
+	Write-Output "Failed " $filename
+	exit 1
+}
+if ((Get-FileHashWin7 $filename $hashname) -ne $hashvalue) {
+	Write-Output "Failed " $filename
+	exit 1
+}
+exit 0