## powershell -NoProfile -ExecutionPolicy Bypass -File xmlformatter.ps1 XMLファイル名
 
param(
  [Parameter(Mandatory = $true)]
  [string] $InputPath
)

if (Test-Path $InputPath) {
    $base = [System.IO.Path]::GetFileNameWithoutExtension($InputPath)
    $OutputPath = ([System.IO.Path]::GetFullPath($base) + ".new.xml")
} else {
    Write-Host "ファイルなし"
    exit
}

## 整形用にインデントを指示
$settings = New-Object System.Xml.XmlWriterSettings
$settings.Indent = $true

## XML読み込み
$xmldoc = New-Object System.Xml.XmlDocument
$xmldoc.Load($InputPath)
 
## XML整形結果書き出し
$writer = [System.Xml.XmlWriter]::Create($OutputPath, $settings)
$xmldoc.Save($writer)
$writer.Close()