PowerShell and Visual Studio tools

When Visual Studio is installed it has special command prompts with tools in PATH variables such as VS2012 x86 Native Tools Command Prompt

I wrote similar scripts for PowerShell (inspired by this)

#requires -version 2

param(
  [string] $version = "11.0"
)

$vsToolsPath = "${Env:ProgramFiles(x86)}\Microsoft Visual Studio $version\VC"
$setVariablesBatch = 'vcvarsall.bat'

if (!(Test-Path $vsToolsPath)) {
    throw "Visual Studio $version tools path $vsToolsPath not found."
}

Push-Location "$vsToolsPath"

if (!(Test-Path $setVariablesBatch)) {
    throw "$vsToolsPath\$setVariablesBatch batch not found."
}

cmd /c "$setVariablesBatch & set" | ForEach-Object {
  if ($_ -match "=") {
    $variablePair = $_ -split "="
    $name = $variablePair[0]
    $value = $variablePair[1]
    Set-Item -Force -Path "ENV:\$name" -Value "$value"
  }
}
Pop-Location
Write-Host "`nVisual Studio $version Command Prompt variables set." -ForegroundColor Yellow