functions/New-PSPropertySet.ps1
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Function New-PSPropertySet { [cmdletbinding(SupportsShouldProcess, DefaultParameterSetName = "new")] Param( [Parameter(Position = 0, Mandatory, HelpMessage = "Enter the object typename.")] [ValidateNotNullOrEmpty()] [string]$Typename, [Parameter(Mandatory, HelpMessage = "Enter the new property set name. It should be alphanumeric.")] [ValidatePattern("^\w+$")] [string]$Name, [Parameter(Mandatory, HelpMessage = "Enter the existing property names or aliases to belong to this property set.")] [ValidateNotNullOrEmpty()] [string[]]$Properties, [Parameter(Mandatory, HelpMessage = "Enter the name of the .ps1xml file to create.")] [ValidatePattern("\.ps1xml$")] [string]$FilePath, [Parameter(HelpMessage = "Append to an existing file.", ParameterSetName = "append")] [switch]$Append, [Parameter(HelpMessage = "Don't overwrite an existing file.", ParameterSetName = "new")] [switch]$NoClobber ) Begin { Write-Verbose "[$((Get-Date).TimeofDay) BEGIN ] Starting $($myinvocation.mycommand)" Write-Verbose "[$((Get-Date).TimeofDay) BEGIN ] Set typename $typename to proper case" $TypeName = _convertTypeName $TypeName $settings = [System.Xml.XmlWriterSettings]::new() $settings.Indent = $True $newComment = @" This file was created with New-PSPropertySet from the PSTypeExtensionTools module which you can install from the PowerShell Gallery. Use Update-TypeData to append this file in your PowerShell session. Created $(Get-Date) "@ } #begin Process { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Creating a property set called $Name for $Typename" #convert file path to a true file system path. $cPath = Join-Path -Path (Convert-Path (Split-Path $filepath)) -ChildPath (Split-Path $FilePath -Leaf) if ($Append -AND (-Not (Test-Path $FilePath))) { Write-Warning "Failed to find $Filepath for appending." Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Ending $($myinvocation.mycommand)" #bail out return } elseif ($Append) { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Appending to $filepath" [xml]$doc = Get-Content $cPath $members = $doc.types.SelectNodes("Type[Name='$typeName']").Members if ($members) { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Appending to existing typename entry" } else { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Creating a new typename entry" $newType = $doc.CreateNode("element", "Type", $null) $tName = $doc.CreateElement("Name") $tName.InnerText = $typename [void]($newType.AppendChild($tname)) $members = $doc.CreateNode("element", "Members", $null) $IsNewType = $True } $propSet = $doc.CreateNode("element", "PropertySet", $null) $eName = $doc.CreateElement("Name") $eName.InnerText = $Name [void]($propset.AppendChild($eName)) $ref = $doc.CreateNode("element", "ReferencedProperties", $null) foreach ($item in $properties) { $prop = $doc.CreateElement("Name") Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Adding property $item" $prop.InnerText = $item [void]($ref.AppendChild($prop)) } [void]($propset.AppendChild($ref)) [void]($members.AppendChild($propset)) if ($IsnewType) { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Appending new type" [void]($newType.AppendChild($members)) [void]($doc.types.AppendChild($newtype)) } } #else append else { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Creating a new XML document" <# use a random temp name to create the xml file. At the end of the process copy the temp file to the specified file path. This makes it possible to use -WhatIf #> $tmpFile = [System.IO.Path]::GetTempFileName() $doc = [System.Xml.XmlWriter]::Create($tmpFile, $settings) $doc.WriteStartDocument() $doc.WriteWhitespace("`n") $doc.WriteComment($newComment) $doc.WriteWhitespace("`n") $doc.WriteStartElement("Types") $doc.WriteStartElement("Type") Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Defining type as $Typename" $doc.WriteElementString("Name", $TypeName) $doc.WriteStartElement("Members") $doc.WriteStartElement("PropertySet") #the property set name Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Defining property set name $Name" $doc.WriteElementString("Name", $Name) $doc.WriteStartElement("ReferencedProperties") foreach ($item in $properties) { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Adding property $item" $doc.WriteElementString("Name", $item) } #end type Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Closing and saving file." $doc.WriteEndElement() $doc.WriteEndDocument() $doc.Close() $doc.Dispose() } if ($PSCmdlet.ShouldProcess($cpath)) { if ((-Not $Append) -AND (Test-Path $tmpFile)) { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Copying temp file to $cpath" if ($NoClobber -AND (Test-Path $cpath)) { Write-Warning "The file $cpath exists and NoClobber was specified." } else { Copy-Item -Path $tmpFile -Destination $cpath } #always clean up the temp file Remove-Item -Path $tmpFile -WhatIf:$false -ErrorAction SilentlyContinue } else { Write-Verbose "[$((Get-Date).TimeofDay) PROCESS] Saving to $cpath" $doc.Save($cpath) } } } #process End { Write-Verbose "[$((Get-Date).TimeofDay) END ] Ending $($myinvocation.mycommand)" } #end } #close New-PSPropertySet |