Hi Vitaly,

See the comment below:

> -----Original Message-----
> From: devel@edk2.groups.io <devel@edk2.groups.io> On Behalf Of Vitaly
> Cheptsov via Groups.Io
> Sent: Monday, February 10, 2020 6:18 PM
> To: devel@edk2.groups.io
> Subject: [edk2-devel] [PATCH 1/1] ShellPkg: Add support for input with
> separately reported modifiers
>
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2510
>
> Some firmwares:
> - Report Shift modifier even when they report upper-case unicode letter.
> - Report Ctrl modifier with "shifted" UniChar (i.e. X - 'A' + 1).
>
> This change provides support for these firmwares preserving the compatibility
> with the previous input handling.
>
> Signed-off-by: Michael Belyaev <usrsse2@icloud.com>
> Reviewed-by: Vitaly Cheptsov <vit9696@protonmail.com>
> ---
> ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/MainTextEditor.c | 37
> ++++++++++++++------
> ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c | 28
> ++++++++++-----
> ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c | 6 ++++
> ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MainHexEditor.c | 11
> +++---
> 4 files changed, 58 insertions(+), 24 deletions(-)
>
> diff --git
> a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/MainTextEditor.c
> b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/MainTextEditor.c
> index df530f1119..9615a4dfbd 100644
> --- a/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/MainTextEditor.c
> +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/Edit/MainTextEditor.c
> @@ -1381,8 +1381,8 @@ MainCommandDisplayHelp (
> continue;
> }
>
> - if (((KeyData.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) == 0) ||
> - (KeyData.KeyState.KeyShiftState == EFI_SHIFT_STATE_VALID)) {
> + if (((KeyData.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) == 0)
> + || (KeyData.KeyState.KeyShiftState == EFI_SHIFT_STATE_VALID)) {
> //
> // For consoles that don't support/report shift state,
> // CTRL+W is translated to L'W' - L'A' + 1.
> @@ -1390,14 +1390,17 @@ MainCommandDisplayHelp (
> if (KeyData.Key.UnicodeChar == L'W' - L'A' + 1) {
> break;
> }
> - } else if (((KeyData.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) != 0)
> &&
> - ((KeyData.KeyState.KeyShiftState & (EFI_LEFT_CONTROL_PRESSED |
> EFI_RIGHT_CONTROL_PRESSED)) != 0) &&
> - ((KeyData.KeyState.KeyShiftState & ~(EFI_SHIFT_STATE_VALID |
> EFI_LEFT_CONTROL_PRESSED | EFI_RIGHT_CONTROL_PRESSED)) == 0)) {
> + } else if (((KeyData.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) != 0)
> + && ((KeyData.KeyState.KeyShiftState & (EFI_LEFT_CONTROL_PRESSED |
> EFI_RIGHT_CONTROL_PRESSED)) != 0)
> + && ((KeyData.KeyState.KeyShiftState &
> + ~(EFI_SHIFT_STATE_VALID | EFI_LEFT_CONTROL_PRESSED |
> + EFI_RIGHT_CONTROL_PRESSED)) == 0)) {
> //
> // For consoles that supports/reports shift state,
> // make sure that only CONTROL shift key is pressed.
> + // For some consoles that report shift state,
> + // CTRL+W is still translated to L'W' - L'A' + 1.
> //
> - if ((KeyData.Key.UnicodeChar == 'w') || (KeyData.Key.UnicodeChar == 'W'))
> {
> + if ((KeyData.Key.UnicodeChar == L'w') || (KeyData.Key.UnicodeChar == L'W')
> + || (KeyData.Key.UnicodeChar == L'w' - L'a' + 1) ||
> + (KeyData.Key.UnicodeChar == L'W' - L'A' + 1)) {
> break;
> }
> }
> @@ -1834,7 +1837,8 @@ MainEditorKeyInput (
> EFI_KEY_DATA KeyData;
> EFI_STATUS Status;
> EFI_SIMPLE_POINTER_STATE MouseState;
> - BOOLEAN NoShiftState;
> + BOOLEAN NoModifierState;
> + BOOLEAN ShiftOnlyState;
>
> do {
>
> @@ -1886,17 +1890,28 @@ MainEditorKeyInput (
> //
> StatusBarSetRefresh();
> //
> - // NoShiftState: TRUE when no shift key is pressed.
> + // NoModifierState: TRUE when no modifier key is pressed.
> //
> - NoShiftState = ((KeyData.KeyState.KeyShiftState &
> EFI_SHIFT_STATE_VALID) == 0) || (KeyData.KeyState.KeyShiftState ==
> EFI_SHIFT_STATE_VALID);
> + NoModifierState = ((KeyData.KeyState.KeyShiftState &
> EFI_SHIFT_STATE_VALID) == 0)
> + || (KeyData.KeyState.KeyShiftState == EFI_SHIFT_STATE_VALID);
> + //
> + // ShiftOnlyState: TRUE when no modifier key except Shift is pressed.
> + //
> + ShiftOnlyState = ((KeyData.KeyState.KeyShiftState &
> EFI_SHIFT_STATE_VALID) == 0)
> + || ((KeyData.KeyState.KeyShiftState
> + & ~(EFI_SHIFT_STATE_VALID |
> + EFI_LEFT_SHIFT_PRESSED | EFI_RIGHT_SHIFT_PRESSED)) == 0);
> //
> // dispatch to different components' key handling function
> //
> if (EFI_NOT_FOUND != MenuBarDispatchControlHotKey(&KeyData)) {
> Status = EFI_SUCCESS;
> - } else if (NoShiftState && ((KeyData.Key.ScanCode == SCAN_NULL) ||
> ((KeyData.Key.ScanCode >= SCAN_UP) && (KeyData.Key.ScanCode <=
> SCAN_PAGE_DOWN)))) {
> + } else if ((ShiftOnlyState && (KeyData.Key.ScanCode == SCAN_NULL))
> + || (NoModifierState && (KeyData.Key.ScanCode >= SCAN_UP) &&
> (KeyData.Key.ScanCode <= SCAN_PAGE_DOWN))) {
> + //
> + // alphanumeric keys with or without shift, or arrow keys without shift
> + //

This is unmatched with the comments. It only handles the alphanumeric keys with shift.

Thanks,
Zhichao

> Status = FileBufferHandleInput (&KeyData.Key);
> - } else if (NoShiftState && (KeyData.Key.ScanCode >= SCAN_F1) &&
> (KeyData.Key.ScanCode <= SCAN_F12)) {
> + } else if (NoModifierState && (KeyData.Key.ScanCode >= SCAN_F1)
> + && (KeyData.Key.ScanCode <= SCAN_F12)) {
> Status = MenuBarDispatchFunctionKey (&KeyData.Key);
> } else {
> StatusBarSetStatusString (L"Unknown Command"); diff --git
> a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c
> b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c
> index 35b0b701e8..d053059220 100644
> --- a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c
> +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditInputBar.c
> @@ -130,6 +130,8 @@ InputBarRefresh (
> UINTN EventIndex;
> UINTN CursorRow;
> UINTN CursorCol;
> + BOOLEAN ShiftPressed;
> + BOOLEAN ModifiersPressed;
>
> //
> // variable initialization
> @@ -180,17 +182,23 @@ InputBarRefresh (
> if (EFI_ERROR (Status)) {
> continue;
> }
> - if (((KeyData.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) != 0) &&
> - (KeyData.KeyState.KeyShiftState != EFI_SHIFT_STATE_VALID)) {
> - //
> - // Shift key pressed.
> - //
> + ModifiersPressed = ((KeyData.KeyState.KeyShiftState &
> EFI_SHIFT_STATE_VALID) != 0)
> + && (KeyData.KeyState.KeyShiftState !=
> + EFI_SHIFT_STATE_VALID);
> +
> + //
> + // TRUE if Shift is pressed and no other modifiers are pressed
> + //
> + ShiftPressed = ModifiersPressed &&
> + ((KeyData.KeyState.KeyShiftState &
> + ~(EFI_SHIFT_STATE_VALID | EFI_LEFT_SHIFT_PRESSED |
> + EFI_RIGHT_SHIFT_PRESSED)) == 0);
> +
> + if (ModifiersPressed && !ShiftPressed) {
> continue;
> }
> //
> // pressed ESC
> //
> - if (KeyData.Key.ScanCode == SCAN_ESC) {
> + if (!ModifiersPressed && KeyData.Key.ScanCode == SCAN_ESC) {
> Size = 0;
> Status = EFI_NOT_READY;
> break;
> @@ -198,9 +206,10 @@ InputBarRefresh (
> //
> // return pressed
> //
> - if (KeyData.Key.UnicodeChar == CHAR_LINEFEED ||
> KeyData.Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
> + if (!ModifiersPressed
> + && (KeyData.Key.UnicodeChar == CHAR_LINEFEED ||
> + KeyData.Key.UnicodeChar == CHAR_CARRIAGE_RETURN)) {
> break;
> - } else if (KeyData.Key.UnicodeChar == CHAR_BACKSPACE) {
> + } else if (!ModifiersPressed && KeyData.Key.UnicodeChar ==
> + CHAR_BACKSPACE) {
> //
> // backspace
> //
> @@ -213,7 +222,8 @@ InputBarRefresh (
>
> }
> }
> - } else if (KeyData.Key.UnicodeChar <= 127 && KeyData.Key.UnicodeChar >=
> 32) {
> + } else if ((!ModifiersPressed || ShiftPressed)
> + && KeyData.Key.UnicodeChar <= 127 &&
> + KeyData.Key.UnicodeChar >= 32) {
> //
> // VALID ASCII char pressed
> //
> diff --git a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c
> b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c
> index ca8bc506d9..eabbf3c571 100644
> --- a/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c
> +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/EditMenuBar.c
> @@ -190,11 +190,17 @@ MenuBarDispatchControlHotKey (
> //
> // For consoles that supports/reports shift state,
> // make sure only CONTROL is pressed.
> + // For some consoles that report shift state,
> + // Ctrl+A is still translated to 1 (UnicodeChar).
> //
> if ((KeyData->Key.UnicodeChar >= L'A') && (KeyData->Key.UnicodeChar <=
> L'Z')) {
> ControlIndex = KeyData->Key.UnicodeChar - L'A' + 1;
> } else if ((KeyData->Key.UnicodeChar >= L'a') && (KeyData->Key.UnicodeChar
> <= L'z')) {
> ControlIndex = KeyData->Key.UnicodeChar - L'a' + 1;
> + } else if ((KeyData->Key.UnicodeChar >= L'A' - L'A' + 1) && (KeyData-
> >Key.UnicodeChar <= L'Z' - L'A' + 1)) {
> + ControlIndex = KeyData->Key.UnicodeChar;
> + } else if ((KeyData->Key.UnicodeChar >= L'a' - L'a' + 1) && (KeyData-
> >Key.UnicodeChar <= L'z' - L'z' + 1)) {
> + ControlIndex = KeyData->Key.UnicodeChar;
> }
> }
> if ((SCAN_CONTROL_Z < ControlIndex)
> diff --git
> a/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MainHexEditor.c
> b/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MainHexEditor.c
> index a00df49d38..394e531c16 100644
> --- a/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MainHexEditor.c
> +++ b/ShellPkg/Library/UefiShellDebug1CommandsLib/HexEdit/MainHexEditor.
> +++ c
> @@ -137,14 +137,17 @@ HMainCommandDisplayHelp (
> if (KeyData.Key.UnicodeChar == L'W' - L'A' + 1) {
> break;
> }
> - } else if (((KeyData.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) != 0)
> &&
> - ((KeyData.KeyState.KeyShiftState & (EFI_LEFT_CONTROL_PRESSED |
> EFI_RIGHT_CONTROL_PRESSED)) != 0) &&
> - ((KeyData.KeyState.KeyShiftState & ~(EFI_SHIFT_STATE_VALID |
> EFI_LEFT_CONTROL_PRESSED | EFI_RIGHT_CONTROL_PRESSED)) == 0)) {
> + } else if (((KeyData.KeyState.KeyShiftState & EFI_SHIFT_STATE_VALID) != 0)
> + && ((KeyData.KeyState.KeyShiftState & (EFI_LEFT_CONTROL_PRESSED |
> EFI_RIGHT_CONTROL_PRESSED)) != 0)
> + && ((KeyData.KeyState.KeyShiftState &
> + ~(EFI_SHIFT_STATE_VALID | EFI_LEFT_CONTROL_PRESSED |
> + EFI_RIGHT_CONTROL_PRESSED)) == 0)) {
> //
> // For consoles that supports/reports shift state,
> // make sure that only CONTROL shift key is pressed.
> + // For some consoles that report shift state,
> + // CTRL+W is still translated to L'W' - L'A' + 1.
> //
> - if ((KeyData.Key.UnicodeChar == 'w') || (KeyData.Key.UnicodeChar == 'W'))
> {
> + if ((KeyData.Key.UnicodeChar == 'w') || (KeyData.Key.UnicodeChar == 'W')
> + || (KeyData.Key.UnicodeChar == L'w' - L'a' + 1) ||
> + (KeyData.Key.UnicodeChar == L'W' - L'A' + 1)) {
> break;
> }
> }
> --
> 2.21.1 (Apple Git-122.3)
>
>
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