*StringPtr = L'\0';\r
\r
LengthStr = StrLen (Value);\r
+\r
+ //\r
+ // Value points to a Unicode hexadecimal string, we need to convert the string to the value with CHAR16/UINT8...type.\r
+ // When generating the Value string, we follow this rule: 1 byte -> 2 Unicode characters (for string: 2 byte(CHAR16) ->4 Unicode characters).\r
+ // So the maximum value string length of a question is : Question->StorageWidth * 2.\r
+ // If the value string length > Question->StorageWidth * 2, only set the string length as Question->StorageWidth * 2, then convert.\r
+ //\r
+ if (LengthStr > (UINTN) Question->StorageWidth * 2) {\r
+ Length = (UINTN) Question->StorageWidth * 2;\r
+ } else {\r
+ Length = LengthStr;\r
+ }\r
+\r
Status = EFI_SUCCESS;\r
if (!IsBufferStorage && IsString) {\r
//\r
// Convert Config String to Unicode String, e.g "0041004200430044" => "ABCD"\r
// Add string tail char L'\0' into Length\r
//\r
- Length = Question->StorageWidth + sizeof (CHAR16);\r
- if (Length < ((LengthStr / 4 + 1) * 2)) {\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- } else {\r
- DstBuf = (CHAR16 *) Dst;\r
- ZeroMem (TemStr, sizeof (TemStr));\r
- for (Index = 0; Index < LengthStr; Index += 4) {\r
- StrnCpyS (TemStr, sizeof (TemStr) / sizeof (CHAR16), Value + Index, 4);\r
- DstBuf[Index/4] = (CHAR16) StrHexToUint64 (TemStr);\r
- }\r
- //\r
- // Add tailing L'\0' character\r
- //\r
- DstBuf[Index/4] = L'\0';\r
+ DstBuf = (CHAR16 *) Dst;\r
+ ZeroMem (TemStr, sizeof (TemStr));\r
+ for (Index = 0; Index < Length; Index += 4) {\r
+ StrnCpyS (TemStr, sizeof (TemStr) / sizeof (CHAR16), Value + Index, 4);\r
+ DstBuf[Index/4] = (CHAR16) StrHexToUint64 (TemStr);\r
}\r
+ //\r
+ // Add tailing L'\0' character\r
+ //\r
+ DstBuf[Index/4] = L'\0';\r
} else {\r
- if (Question->StorageWidth < ((LengthStr + 1) / 2)) {\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- } else {\r
- ZeroMem (TemStr, sizeof (TemStr));\r
- for (Index = 0; Index < LengthStr; Index ++) {\r
- TemStr[0] = Value[LengthStr - Index - 1];\r
- DigitUint8 = (UINT8) StrHexToUint64 (TemStr);\r
- if ((Index & 1) == 0) {\r
- Dst [Index/2] = DigitUint8;\r
- } else {\r
- Dst [Index/2] = (UINT8) ((DigitUint8 << 4) + Dst [Index/2]);\r
- }\r
+ ZeroMem (TemStr, sizeof (TemStr));\r
+ for (Index = 0; Index < Length; Index ++) {\r
+ TemStr[0] = Value[LengthStr - Index - 1];\r
+ DigitUint8 = (UINT8) StrHexToUint64 (TemStr);\r
+ if ((Index & 1) == 0) {\r
+ Dst [Index/2] = DigitUint8;\r
+ } else {\r
+ Dst [Index/2] = (UINT8) ((DigitUint8 << 4) + Dst [Index/2]);\r
}\r
}\r
}\r
// Type is EFI_HII_VARSTORE_EFI_VARIABLE or EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER\r
//\r
\r
+ //\r
+ // Convert all hex digits in ConfigResp to lower case before searching.\r
+ //\r
+ HiiToLower (ConfigResp);\r
+\r
//\r
// 1. Directly use Question->BlockName to find.\r
//\r