Commands/Set-Turtle.ps1
|
function Set-Turtle { <# .SYNOPSIS Sets a turtle. .DESCRIPTION Changes properties of a turtle, and returns the turtle. .EXAMPLE New-Turtle | Move-Turtle SierpinskiTriangle 20 3 | Set-Turtle -Property Stroke -Value '#4488ff' | Save-Turtle "./SierpinskiTriangle.svg" #> param( # The property of the turtle to set. [Parameter(Mandatory)] [ArgumentCompleter({ param ( $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters ) $turtleType = Get-TypeData -TypeName Turtle $propertyNames = @(foreach ($memberName in $turtleType.Members.Keys) { if ($turtleType.Members[$memberName] -is [System.Management.Automation.Runspaces.ScriptPropertyData] -and $turtleType.Members[$memberName].SetScriptBlock) { $memberName } }) if ($wordToComplete) { return $propertyNames -like "$wordToComplete*" } else { return $propertyNames } })] [string] $Property, # The value to set. [PSObject] $Value, # The turtle input object. [Parameter(ValueFromPipeline)] [Alias('Turtle')] [PSObject] $InputObject ) process { # If there is no input object, return. if (-not $inputObject) { return } # Get the property to set. $propInfo = $inputObject.psobject.properties[$property] # If the property is not settable, return an error. if (-not $propInfo.SetterScript) { Write-Error "Property '$property' can not be set." return } # set the property value. $inputObject.$property = $Value # return our input for the next step of the pipeline. return $inputObject } } |