OP

0.1

Types/OpenPackage.Part/ReadXsd.ps1

<#
.SYNOPSIS
    Reads Part Content as Xml Schema Definitions
.DESCRIPTION
    Reads an OpenPackage Part's Content as Xml Schema Definitions
#>
[Reflection.AssemblyMetadata(
    'FilePattern', '\.xsd?$'
)]
[Reflection.AssemblyMetadata(
    'ContentTypePattern', '[/\+]xsd?$'
)]

param(
    # An optional input object
    # If provided, content will be read from this object.
    # If not provided, content will be read from this part.
    [Alias('Input')]
    [PSObject]$InputObject = $null,
 
    # Any options used to read the data.
    [Alias('Options')]
    [Collections.IDictionary]$Option = [Ordered]@{}
)

$xmlReaderSettings = [Xml.XmlReaderSettings]::new()
$xmlReaderSettings.DtdProcessing = 'Parse'
foreach ($key in $options.Keys) {
    if ($xmlReaderSettings.psobject.Properties[$key].IsSettable) {
        $xmlReaderSettings.$key = $option[$key]
    }
}

if ($InputObject -is [IO.Stream]) {
    try {        
        $xmlReader = [Xml.XmlReader]::Create($InputObject, $xmlReaderSettings)
        [Xml.Schema.XmlSchema]::Read($xmlReader,{})    
    } catch {
        $_
    } finally {
        if ($xmlReader) {
            $xmlReader.Close()
            $xmlReader.Dispose()
        }
    }
} elseif ($this.GetStream) {
    try {
        $partStream = $this.GetStream('Open','Read')            
        $xmlReader = [Xml.XmlReader]::Create($partStream, $xmlReaderSettings)
        [Xml.Schema.XmlSchema]::Read($xmlReader,{})    
    } catch {
        $_
    } finally {
        if ($xmlReader) {
            $xmlReader.Close()
            $xmlReader.Dispose()
        }

        $partStream.Close()
        $partStream.Dispose()
    }
}