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alder_lake_bios/Insyde/InsydeModulePkg/Universal/UserInterface/H2OKeyDescDxe/H2OKeyDesc.c

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/** @file
;******************************************************************************
;* Copyright (c) 2012 - 2016, Insyde Software Corp. All Rights Reserved.
;*
;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
;* transmit, broadcast, present, recite, release, license or otherwise exploit
;* any part of this publication in any form, by any means, without the prior
;* written permission of Insyde Software Corporation.
;*
;******************************************************************************
*/
#include <H2OKeyDesc.h>
typedef struct {
CHAR16 *KeyShiftStr;
UINT32 KeyShiftState;
} H2O_KEY_SHIFT_STATE_INFO;
typedef struct {
CHAR16 *ScanCodeStr;
UINT16 ScanCode;
} H2O_SCAN_CODE_INFO;
typedef struct {
CHAR16 *UnicodeCharStr;
CHAR16 UnicodeChar;
} H2O_UNICODE_CHAR_INFO;
H2O_KEY_SHIFT_STATE_INFO mKeyShiftStateInfo[] = {
{L"ctrl" , EFI_RIGHT_CONTROL_PRESSED | EFI_LEFT_CONTROL_PRESSED},
{L"shift" , EFI_RIGHT_SHIFT_PRESSED | EFI_LEFT_SHIFT_PRESSED },
{L"alt" , EFI_RIGHT_ALT_PRESSED | EFI_LEFT_ALT_PRESSED },
{L"logo" , EFI_RIGHT_LOGO_PRESSED | EFI_LEFT_LOGO_PRESSED },
{L"menu" , EFI_MENU_KEY_PRESSED },
{L"sysreq", EFI_SYS_REQ_PRESSED },
};
H2O_SCAN_CODE_INFO mScanCodeInfo[] = {
{L"esc" , SCAN_ESC },
{L"ins" , SCAN_INSERT },
{L"del" , SCAN_DELETE },
{L"up" , SCAN_UP },
{L"down" , SCAN_DOWN },
{L"right", SCAN_RIGHT },
{L"left" , SCAN_LEFT },
{L"home" , SCAN_HOME },
{L"end" , SCAN_END },
{L"pgup" , SCAN_PAGE_UP },
{L"pgdn" , SCAN_PAGE_DOWN},
{L"f1" , SCAN_F1 },
{L"f2" , SCAN_F2 },
{L"f3" , SCAN_F3 },
{L"f4" , SCAN_F4 },
{L"f5" , SCAN_F5 },
{L"f6" , SCAN_F6 },
{L"f7" , SCAN_F7 },
{L"f8" , SCAN_F8 },
{L"f9" , SCAN_F9 },
{L"f10" , SCAN_F10 },
{L"f11" , SCAN_F11 },
{L"f12" , SCAN_F12 },
};
H2O_UNICODE_CHAR_INFO mUnicodeCharInfo[] = {
{L"enter" , CHAR_CARRIAGE_RETURN},
{L"backspace", CHAR_BACKSPACE },
{L"tab" , CHAR_TAB },
{L"space" , ' ' },
};
/**
Check if the input character is a visible character
@param[in] UnicodeChar Unicode character
@retval TRUE The input character is a visible character
@retval FALSE The input character is not a visible character
**/
STATIC
BOOLEAN
IsVisibleChar (
IN CHAR16 UnicodeChar
)
{
return (BOOLEAN) (UnicodeChar >= ' ' && UnicodeChar <= '~');
}
/**
Converts the unicode character of the string from uppercase to lowercase.
@param[in, out] Str String to be converted
**/
STATIC
VOID
ToLower (
IN OUT CHAR16 *Str
)
{
CHAR16 *Ptr;
for (Ptr = Str; *Ptr != L'\0'; Ptr++) {
if (*Ptr >= L'A' && *Ptr <= L'Z') {
*Ptr = (CHAR16) (*Ptr - L'A' + L'a');
}
}
}
/**
Append key string into target string.
@param[in] KeyStr Pointer to key string
@param[in, out] Str Double pointer to appended string
@retval EFI_SUCCESS Append string successfully.
@retval EFI_INVALID_PARAMETER KeyStr or AppendedStr is NULL.
**/
STATIC
EFI_STATUS
AppendKeyStr (
IN CHAR16 *KeyStr,
IN OUT CHAR16 **AppendedStr
)
{
CHAR16 *OrgStr;
CHAR16 *NewStr;
if (KeyStr == NULL || AppendedStr == NULL) {
return EFI_INVALID_PARAMETER;
}
OrgStr = *AppendedStr;
if (OrgStr == NULL) {
NewStr = AllocateCopyPool (StrSize (KeyStr), KeyStr);
} else {
NewStr = CatSPrint (NULL, L"%s-%s", OrgStr, KeyStr);
FreePool (OrgStr);
}
*AppendedStr = NewStr;
return EFI_SUCCESS;
}
/**
Converts from standard EFI key data structures to strings.
@param[in] This Pointer to current instance of this protocol.
@param[out] String The key data user want to change.
@param[in] KeyData The string has been changed.
@retval EFI_SUCCESS Function completed successfully.
@retval EFI_OUT_OF_RESOURCES Unable to allocate required resources.
*/
EFI_STATUS
EFIAPI
H2OKeyDescKeyToString (
IN H2O_KEY_DESC_PROTOCOL *This,
IN EFI_KEY_DATA *KeyData,
OUT CHAR16 **String
)
{
CHAR16 *ResultStr;
CHAR16 CharStr[2];
UINT32 KeyShiftState;
UINTN Index;
if (This == NULL || KeyData == NULL || String == NULL) {
return EFI_INVALID_PARAMETER;
}
if (KeyData->Key.ScanCode != SCAN_NULL && KeyData->Key.UnicodeChar != CHAR_NULL) {
return EFI_NO_MAPPING;
}
ResultStr = NULL;
KeyShiftState = KeyData->KeyState.KeyShiftState;
if (((KeyShiftState & EFI_SHIFT_STATE_VALID) == EFI_SHIFT_STATE_VALID) && (KeyShiftState != EFI_SHIFT_STATE_VALID)) {
for (Index = 0; Index < sizeof (mKeyShiftStateInfo) / sizeof (H2O_KEY_SHIFT_STATE_INFO); Index++) {
if ((mKeyShiftStateInfo[Index].KeyShiftState & KeyShiftState) != 0) {
AppendKeyStr (mKeyShiftStateInfo[Index].KeyShiftStr, &ResultStr);
}
}
}
if (KeyData->Key.ScanCode != SCAN_NULL) {
for (Index = 0; Index < sizeof (mScanCodeInfo) / sizeof (H2O_SCAN_CODE_INFO); Index++) {
if (mScanCodeInfo[Index].ScanCode == KeyData->Key.ScanCode) {
AppendKeyStr (mScanCodeInfo[Index].ScanCodeStr, &ResultStr);
break;
}
}
if (Index == sizeof (mScanCodeInfo) / sizeof (H2O_SCAN_CODE_INFO)) {
if (ResultStr != NULL) {
FreePool (ResultStr);
}
return EFI_NO_MAPPING;
}
} else if (KeyData->Key.UnicodeChar != CHAR_NULL) {
for (Index = 0; Index < sizeof (mUnicodeCharInfo) / sizeof (H2O_UNICODE_CHAR_INFO); Index++) {
if (mUnicodeCharInfo[Index].UnicodeChar == KeyData->Key.UnicodeChar) {
AppendKeyStr (mUnicodeCharInfo[Index].UnicodeCharStr, &ResultStr);
break;
}
}
if (Index == sizeof (mUnicodeCharInfo) / sizeof (H2O_UNICODE_CHAR_INFO)) {
if (IsVisibleChar (KeyData->Key.UnicodeChar)) {
CharStr[0] = KeyData->Key.UnicodeChar;
CharStr[1] = CHAR_NULL;
AppendKeyStr (CharStr, &ResultStr);
} else {
if (ResultStr != NULL) {
FreePool (ResultStr);
}
return EFI_NO_MAPPING;
}
}
}
if (ResultStr == NULL) {
return EFI_NO_MAPPING;
}
*String = ResultStr;
return EFI_SUCCESS;
}
/**
Converts from strings to standard EFI key data structures.
@param[in] This Pointer to current instance of this protocol.
@param[in] String The string user want to change.
@param[out] KeyData The key data has been changed.
@retval EFI_SUCCESS Function completed successfully.
@retval EFI_INVALID_PARAMETER Invalid input string.
*/
EFI_STATUS
EFIAPI
H2OKeyDescKeyFromString (
IN H2O_KEY_DESC_PROTOCOL *This,
IN CHAR16 *String,
OUT EFI_KEY_DATA *KeyData
)
{
EFI_KEY_DATA ResultKeyData;
CHAR16 *StringPtr;
CHAR16 *DashCharPtr;
CHAR16 KeyStr[30];
UINTN Index;
if (This == NULL || String == NULL || KeyData == NULL) {
return EFI_INVALID_PARAMETER;
}
if (*String == CHAR_NULL) {
return EFI_NO_MAPPING;
}
ZeroMem (&ResultKeyData, sizeof (ResultKeyData));
ResultKeyData.KeyState.KeyShiftState = EFI_SHIFT_STATE_VALID;
ResultKeyData.KeyState.KeyToggleState = EFI_TOGGLE_STATE_VALID;
//
// Check the key string before '-' character to parsing key shift state.
//
StringPtr = String;
while (TRUE) {
DashCharPtr = StrStr (StringPtr, L"-");
if (DashCharPtr == NULL || DashCharPtr == StringPtr) {
break;
}
ZeroMem (KeyStr, sizeof (KeyStr));
CopyMem (KeyStr, StringPtr, ((UINTN) (DashCharPtr - StringPtr)) * sizeof (CHAR16));
ToLower (KeyStr);
StringPtr = DashCharPtr + 1;
for (Index = 0; Index < sizeof (mKeyShiftStateInfo) / sizeof (H2O_KEY_SHIFT_STATE_INFO); Index++) {
if (StrCmp (mKeyShiftStateInfo[Index].KeyShiftStr, KeyStr) == 0) {
ResultKeyData.KeyState.KeyShiftState |= mKeyShiftStateInfo[Index].KeyShiftState;
break;
}
}
if (Index == sizeof (mKeyShiftStateInfo) / sizeof (H2O_KEY_SHIFT_STATE_INFO)) {
return EFI_NO_MAPPING;
}
}
if (*StringPtr == CHAR_NULL) {
return EFI_NO_MAPPING;
}
//
// Check last key string
//
if (StrLen (StringPtr) == 1) {
if (IsVisibleChar (*StringPtr)) {
ResultKeyData.Key.UnicodeChar = *StringPtr;
goto Done;
}
} else {
StrCpyS (KeyStr, sizeof(KeyStr) / sizeof(CHAR16), StringPtr);
ToLower (KeyStr);
for (Index = 0; Index < sizeof (mKeyShiftStateInfo) / sizeof (H2O_KEY_SHIFT_STATE_INFO); Index++) {
if (StrCmp (mKeyShiftStateInfo[Index].KeyShiftStr, KeyStr) == 0) {
ResultKeyData.KeyState.KeyShiftState |= mKeyShiftStateInfo[Index].KeyShiftState;
goto Done;
}
}
for (Index = 0; Index < sizeof (mScanCodeInfo) / sizeof (H2O_SCAN_CODE_INFO); Index++) {
if (StrCmp (mScanCodeInfo[Index].ScanCodeStr, KeyStr) == 0) {
ResultKeyData.Key.ScanCode = mScanCodeInfo[Index].ScanCode;
goto Done;
}
}
for (Index = 0; Index < sizeof (mUnicodeCharInfo) / sizeof (H2O_UNICODE_CHAR_INFO); Index++) {
if (StrCmp (mUnicodeCharInfo[Index].UnicodeCharStr, KeyStr) == 0) {
ResultKeyData.Key.UnicodeChar = mUnicodeCharInfo[Index].UnicodeChar;
goto Done;
}
}
}
return EFI_NO_MAPPING;
Done:
CopyMem (KeyData, &ResultKeyData, sizeof(EFI_KEY_DATA));
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
H2OKeyDescEntryPoint (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
H2O_KEY_DESC_PROTOCOL *H2OKeyDescProtocol;
//
// Install H2O_KEY_DESC_PROTOCOL
//
H2OKeyDescProtocol = (H2O_KEY_DESC_PROTOCOL*) AllocateZeroPool (sizeof (H2O_KEY_DESC_PROTOCOL));
if (H2OKeyDescProtocol == NULL) {
return EFI_OUT_OF_RESOURCES;
}
H2OKeyDescProtocol->Size = (UINT32) sizeof (H2O_KEY_DESC_PROTOCOL);
H2OKeyDescProtocol->KeyToString = H2OKeyDescKeyToString;
H2OKeyDescProtocol->KeyFromString = H2OKeyDescKeyFromString;
Status = gBS->InstallProtocolInterface (
&ImageHandle,
&gH2OKeyDescProtocolGuid,
EFI_NATIVE_INTERFACE,
H2OKeyDescProtocol
);
if (EFI_ERROR (Status)) {
return Status;
}
return EFI_SUCCESS;
}
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