internal/New-ProxyFunction.ps1
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Function New-ProxyFunction { <# .SYNOPSIS Proxy function dynamic parameter block .DESCRIPTION The dynamic parameter block of a proxy function. This block can be used to copy a proxy function target's parameters, regardless of changes from version to version. .LINK https://www.the-little-things.net/blog/2017/07/30/powershell-inheriting-parameters-proxy-functions/ #> [CmdletBinding(SupportsShouldProcess = $true)] [System.Diagnostics.DebuggerStepThrough()] param( # The name of the command being proxied. [System.String] $CommandName, # The type of the command being proxied. Valid values include 'Cmdlet' or 'Function'. [System.Management.Automation.CommandTypes] $CommandType, [String[]] $ignoredParams ) Process { if ($pscmdlet.ShouldProcess('New-ProxyFunction', 'Invoke')) { try { # Look up the command being proxied. $wrappedCmd = $ExecutionContext.InvokeCommand.GetCommand($CommandName, $CommandType) #If the command was not found, throw an appropriate command not found exception. if (-not $wrappedCmd) { $PSCmdlet.ThrowCommandNotFoundError($CommandName, $PSCmdlet.MyInvocation.MyCommand.Name) } # Lookup the command metadata. $metadata = New-Object -TypeName System.Management.Automation.CommandMetadata -ArgumentList $wrappedCmd # Create dynamic parameters, one for each parameter on the command being proxied. $dynamicDictionary = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameterDictionary foreach ($key in $metadata.Parameters.Keys) { If ($ignoredParams -notcontains $Key) { $parameter = $metadata.Parameters[$key] $dynamicParameter = New-Object -TypeName System.Management.Automation.RuntimeDefinedParameter -ArgumentList @( $parameter.Name $parameter.ParameterType , $parameter.Attributes ) $dynamicDictionary.Add($parameter.Name, $dynamicParameter) } } $dynamicDictionary } catch { $PSCmdlet.ThrowTerminatingError($_) } } } } |