Public/Get-FunctionCode.ps1
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function Get-FunctionCode { <# .Synopsis Get the code of a powershell function or filter .EXAMPLE # Gets the code for New-Guid Get-FunctionCode New-Guid .EXAMPLE # Outputs the code for New-Guid into a new PowerShell ISE Tab Get-FunctionCode -Function New-Guid -OutISE .EXAMPLE # Gets the code for New-Guid and saves it to V:\temp\New-Guid.ps1 Get-FunctionCode New-Guid -OutFile V:\temp\New-Guid.ps1 .EXAMPLE # Outputs the code for New-Guid into a new PowerShell ISE Tab and saves it to V:\temp\New-Guid.ps1 Get-FunctionCode -Function New-Guid -OutISE -OutFile V:\temp\New-Guid.ps1 #> Param( # Function Name [Parameter(Mandatory)] [ValidateScript({ if (-not (Get-Command -Name $_ -CommandType Function,Filter -ErrorAction SilentlyContinue)) { throw ('Cannot find function - {0}' -f $_) } return $true })] [String]$Function, [ValidateScript({ if (-not ($psISE)) { throw ('{0}-OutISE can only be use within PowerShell ISE' -f ("`n")) } return $true })] [switch]$OutISE, [ValidateScript({ if($_ | Test-Path -PathType Leaf) { throw 'File already exists' } return $true })] [string]$OutFile ) Process { $CmdInfo = Get-Command -Name $Function -CommandType Function,Filter $FCode = '{0} {1} {3}{2}{4}' -f $CmdInfo.CommandType,$CmdInfo.Name,$CmdInfo.Definition,('{'),('}') $FCode = ($FCode.Split("`n") | ForEach-Object { $_ -replace '\s*$' }) -join "`n" if($OutISE) { $IseFile1 = $psISE.CurrentPowerShellTab.Files.Add() $IseFile1.Editor.Text = $FCode $IseFile1.Editor.SetCaretPosition(1,1) if($OutFile) { $IseFile1.SaveAs($OutFile,[System.Text.UTF8Encoding]::new($false)) } } else { if($OutFile) { [System.IO.File]::WriteAllLines($OutFile,$FCode,[System.Text.UTF8Encoding]::new($false)) } $FCode | Write-Output } } } |