Extract MemoryStream resources from a resx file (common in certain Longhorn-era components)

extract_streams_from_resx.ps1

param([String] $resx_filename)
Add-Type -AssemblyName System.Windows.Forms
$resx = New-Object -TypeName 'System.Resources.ResXResourceSet' -ArgumentList $resx_filename
$root_path = [System.IO.Path]::GetDirectoryName($resx_filename);

foreach($item in $resx)
{
  if ($item.Value.GetType() -Eq [System.IO.MemoryStream])
  {
    $out_path = [System.IO.Path]::Combine($root_path, $item.Name);
    [System.IO.File]::WriteAllBytes($out_path, $item.Value.ToArray());
  }
}