PowerShell : XML schema validation

I have this script to validate an XML file against a schema. The module exposes a Test-XmlSchema function that accepts an XML file and a Schema file as parameters and validates the XML file against the schema.

function Test-XmlSchema

{

    param

    (

        [Parameter(Mandatory = $true)]

        [ValidateScript({Test-Path $_})]

        [String]

        $XmlPath,

       

        [Parameter(Mandatory = $true)]

        [ValidateScript({Test-Path $_})]

        [String]

        $SchemaPath

    )

    $schemas = New-Object System.Xml.Schema.XmlSchemaSet

       $schemas.CompilationSettings.EnableUpaCheck = $false

       $schema = ReadSchema $SchemaPath

       [void]($schemas.Add($schema))

       $schemas.Compile()

      

       try

    {

        [xml]$xmlData = Get-Content $XmlPath

              $xmlData.Schemas = $schemas

        #Validate the schema. This will fail if is invalid schema

              $xmlData.Validate($null)

              return $true

       }

    catch [System.Xml.Schema.XmlSchemaValidationException]

    {

              return $false

       }

}

Function ReadSchema

{

       param($SchemaPath)

       try

    {

              $schemaItem = Get-Item $SchemaPath

              $stream = $schemaItem.OpenRead()

              $schema = [Xml.Schema.XmlSchema]::Read($stream, $null)

              return $schema

       }

       catch

    {

              throw

       }

       finally

    {

              if($stream)

        {

                     $stream.Close()

              }

       }

}

Export-ModuleMember -Function Test-XmlSchema

Usage:

PS C:\> Import-Module XML

PS C:\> Test-XMLSchema -XmlPath E:\Test.xml -SchemaPath E:\Test.xsd

True