Private/Get-CommandLineStackParameters.ps1
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function Get-CommandLineStackParameters { <# .SYNOPSIS Returns stack parameter objects from the calling function's command line .DESCRIPTION Discovers the parameters of the calling object that are dynamic and creates an array of stack parameter objects from them .PARAMETER CallerBoundParameters Value of $PSBoundParameters from the calling function .OUTPUTS [Amazon.CloudFormation.Model.Parameter[]] Array of any parameters found. #> param ( [hashtable]$CallerBoundParameters ) # Create a dummy function for the purpose of dicovering # the PowerShell common parameters so they can be filtered out. function _temp { [cmdletbinding()] param() } $commonParameters = (Get-Command _temp | Select-Object -ExpandProperty parameters).Keys $stackParameters = $CallerBoundParameters.Keys | Where-Object { -not ($commonParameters -contains $_ -or $Script:CommonCredentialArguments.Keys -contains $_ -or (Get-Variable -Name $_ -Scope 1 -ErrorAction SilentlyContinue)) } | ForEach-Object { # Now we are iterating the names of template parameters found on the command line. $param = New-Object Amazon.CloudFormation.Model.Parameter $param.ParameterKey = $_ $param.ParameterValue = $CallerBoundParameters.$_ -join ',' $param } # We want this to return an array - always switch (($stackParameters | Measure-Object).Count) { 0 { # Stupid, stupid # https://stackoverflow.com/questions/18476634/powershell-doesnt-return-an-empty-array-as-an-array $a = @() return , $a } 1 { # Stupid, stupid # https://stackoverflow.com/questions/18476634/powershell-doesnt-return-an-empty-array-as-an-array $a = @($stackParameters) return , $a } default { return $stackParameters } } } |