Private/Read-VKey.ps1
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function Read-VKey() { $CurrentHost = Get-Host $ErrMsg = "Current host '$CurrentHost' does not support operation 'ReadKey'" try { # Issues with reading up and down arrow keys # - https://github.com/PowerShell/PowerShell/issues/16443 # - https://github.com/dotnet/runtime/issues/63387 # - https://github.com/PowerShell/PowerShell/issues/16606 if ($IsLinux -or $IsMacOS) { ## A bug with Linux and Mac where arrow keys are return in 2 chars. First is esc follow by A,B,C,D $key1 = $CurrentHost.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown") if ($key1.VirtualKeyCode -eq 0x1B) { ## Found that we got an esc chair so we need to grab one more char $key2 = $CurrentHost.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown") ## We just care about up and down arrow mapping here for now. if ($key2.VirtualKeyCode -eq 0x41) { # VK_UP = 0x26 up-arrow $key1.VirtualKeyCode = 0x26 } if ($key2.VirtualKeyCode -eq 0x42) { # VK_DOWN = 0x28 down-arrow $key1.VirtualKeyCode = 0x28 } } Return $key1 } Return $CurrentHost.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown") } catch [System.NotSupportedException] { Write-Error -Exception $_.Exception -Message $ErrMsg } catch [System.NotImplementedException] { Write-Error -Exception $_.Exception -Message $ErrMsg } } |