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remove dependency on PSCX module and use a script fron the Technet sa…
…mples site for XSD validation
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| ############################################################################################## | ||
| # Taken from http://gallery.technet.microsoft.com/scriptcenter/2f6f0541-d152-4474-a8c1-b441d7424454 | ||
| # Written by Justin Yancey | ||
| ############################################################################################## | ||
|
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||
| #<function name="Validate-Xml"> | ||
| #<description>A function used to validate an XML object against a given schema</description> | ||
| #<parameters> | ||
| # <parameter name="xml" type="XmlDocument" mandatory="true" position="0" pipeline="true" /> | ||
| # <parameter name="schema" type="String" mandatory="true" position="1" pipeline="false" /> | ||
| #</parameters> | ||
| #<returns>Array</returns> | ||
| #<body> | ||
|
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| Function Validate-Xml{ | ||
| param( | ||
| [Parameter( | ||
| Mandatory = $true, | ||
| Position = 0, | ||
| ValueFromPipeline = $true, | ||
| ValueFromPipelineByPropertyName = $true)] | ||
| [xml]$xml, | ||
| [Parameter( | ||
| Mandatory = $true, | ||
| Position = 1, | ||
| ValueFromPipeline = $false)] | ||
| [string]$schema | ||
| ) | ||
|
|
||
| #<c>Declare the array to hold our error objects</c> | ||
| $validationerrors = @() | ||
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||
| #<c>Check to see if we have defined our namespace cache variable, | ||
| #and create it if it doesnt exist. We do this in case we want to make | ||
| #lots and lots of calls to this function, to save on excessive file IO.</c> | ||
| if (-not $schemas){ ${GLOBAL:schemas} = @{} } | ||
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| #<c>Check to see if the namespace is already in the cache,if not then add it</c> | ||
| #<choose> | ||
| #<if test="Is schema in cache"> | ||
| if (-not $schemas[$schema]) { | ||
| #<c>Read in the schema file</c> | ||
| [xml]$xmlschema = Get-Content $schema | ||
| #<c>Extract the targetNamespace from the schema</c> | ||
| $namespace = $xmlschema.get_DocumentElement().targetNamespace | ||
| #<c>Add the schema/namespace entry to the global hashtable</c> | ||
| $schemas.Add($schema,$namespace) | ||
| #</if> | ||
| } else { | ||
| #<else> | ||
| #<c>Pull the namespace from the schema cache</c> | ||
| $namespace = $schemas[$schema] | ||
| } | ||
| #</else><choose> | ||
|
|
||
| #<c>Define the script block that will act as the validation event handler</c> | ||
| $code = @' | ||
| param($sender,$a) | ||
| $ex = $a.Exception | ||
| #<c>Trim out the useless,irrelevant parts of the message</c> | ||
| $msg = $ex.Message -replace " in namespace 'http.*?'","" | ||
| #<c>Create the custom error object using a hashtable</c> | ||
| $properties = @{LineNumber=$ex.LineNumber; LinePosition=$ex.LinePosition; Message=$msg} | ||
| $o = New-Object PSObject -Property $properties | ||
| #<c>Add the object to the $validationerrors array</c> | ||
| $validationerrors += $o | ||
| '@ | ||
| #<c>Convert the code block to as ScriptBlock</c> | ||
| $validationEventHandler = [scriptblock]::Create($code) | ||
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| #<c>Create a new XmlReaderSettings object</c> | ||
| $rs = new-object System.Xml.XmlreaderSettings | ||
| #<c>Load the schema into the XmlReaderSettings object</c> | ||
| [Void]$rs.schemas.add($namespace,(new-object System.Xml.xmltextreader($schema))) | ||
| #<c>Instruct the XmlReaderSettings object to use Schema validation</c> | ||
| $rs.validationtype = "Schema" | ||
| $rs.ConformanceLevel = "Auto" | ||
| #<c>Add the scriptblock as the ValidationEventHandler</c> | ||
| $rs.add_ValidationEventHandler($validationEventHandler) | ||
|
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| #<c>Create a temporary file and save the Xml into it</c> | ||
| $xmlfile = [System.IO.Path]::GetTempFileName() | ||
| $xml.Save($xmlfile) | ||
|
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| #<c>Create the XmlReader object using the settings defined previously</c> | ||
| $reader = [System.Xml.XmlReader]::Create($xmlfile,$rs) | ||
|
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| #<c>Temporarily set the ErrorActionPreference to SilentlyContinue, | ||
| #as we want to use our validation event handler to handle errors</c> | ||
| $previousErrorActionPreference = $ErrorActionPreference | ||
| $ErrorActionPreference = "SilentlyContinue" | ||
|
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| #<c>Read the Xml using the XmlReader</c> | ||
| while ($reader.read()) {$null} | ||
| #<c>Close the reader</c> | ||
| $reader.close() | ||
|
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| #<c>Delete the temporary file</c> | ||
| Remove-Item $xmlfile | ||
|
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| #<c>Reset the ErrorActionPreference back to the previous value</c> | ||
| $ErrorActionPreference = $previousErrorActionPreference | ||
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| #<c>Return the array of validation errors</c> | ||
| return $validationerrors | ||
| } | ||
| #</body></function> |