private/PostCommandLookup.ps1
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function PostCommandLookup($commands, $helpers) { $ExecutionContext.InvokeCommand.PostCommandLookupAction = { param($CommandName, $CommandLookupEventArgs) if ($commands -contains $CommandName -and ((&$helpers.isUnderTest) -or $CommandLookupEventArgs.CommandOrigin -eq 'Runspace')) { Write-Verbose "Entered post command lookup" $helpers = $helpers # make available to inner closure $CommandLookupEventArgs.CommandScriptBlock = { $fullCommand = (@($commandname) + $args) -join ' ' $tokens = [System.Management.Automation.PSParser]::Tokenize($fullCommand, [ref]$null) $params = $tokens | Where-Object type -eq CommandParameter # two arg: transpose if ( @($args).Length -eq 2 -and @($params).Length -eq 0 -and -not ($args -match '^(/|\\)') ) { &$helpers.transpose @args } # single arg: expand if necessary elseif (@($args).Length -eq 1 -and @($params).Length -eq 0) { try { &$helpers.setLocation @args -ErrorAction Stop } catch [Management.Automation.ItemNotFoundException] { if ( ($expanded = &$helpers.expandPath $args $cde.CD_PATH) -and ($dirs = $expanded | Where {$_ -is [System.IO.DirectoryInfo]}) -and ($dirs.Count -eq 1)) { &$helpers.setLocation $dirs } else { throw } } } # noarg cd elseif (@($args).Length -eq 0 -and @($params).Length -eq 0) { if (Test-Path $cde.NOARG_CD) { &$helpers.setLocation $cde.NOARG_CD } } else { &$helpers.setLocation @args } }.GetNewClosure() } }.GetNewClosure() } |