)\r
;\r
\r
+/**\r
+ Test if a Unicode character is a hexadecimal digit. If true, the input\r
+ Unicode character is converted to a byte. \r
+\r
+ This function tests if a Unicode character is a hexadecimal digit. If true, the input\r
+ Unicode character is converted to a byte. For example, Unicode character\r
+ L'A' will be converted to 0x0A. \r
+\r
+ If Digit is NULL, then ASSERT.\r
+\r
+ @param Digit The output hexadecimal digit.\r
+\r
+ @param Char The input Unicode character.\r
+\r
+ @retval TRUE Char is in the range of Hexadecimal number. Digit is updated\r
+ to the byte value of the number.\r
+ @retval FALSE Char is not in the range of Hexadecimal number. Digit is keep\r
+ intact.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+IsHexDigit (\r
+ OUT UINT8 *Digit,\r
+ IN CHAR16 Char\r
+ )\r
+;\r
+\r
+\r
+/** \r
+ Convert binary buffer to a Unicode String in a specified sequence. \r
+\r
+ This function converts bytes in the memory block pointed by Buffer to a Unicode String Str. \r
+ Each byte will be represented by two Unicode characters. For example, byte 0xA1 will \r
+ be converted into two Unicode character L'A' and L'1'. In the output String, the Unicode Character \r
+ for the Most Significant Nibble will be put before the Unicode Character for the Least Significant\r
+ Nibble. The output string for the buffer containing a single byte 0xA1 will be L"A1". \r
+ For a buffer with multiple bytes, the Unicode character produced by the first byte will be put into the \r
+ the last character in the output string. The one next to first byte will be put into the\r
+ character before the last character. This rules applies to the rest of the bytes. The Unicode\r
+ character by the last byte will be put into the first character in the output string. For example,\r
+ the input buffer for a 64-bits unsigned integer 0x12345678abcdef1234 will be converted to\r
+ a Unicode string equal to L"12345678abcdef1234".\r
+\r
+ @param String On input, String is pointed to the buffer allocated for the convertion.\r
+ @param StringLen The Length of String buffer to hold the output String. The length must include the tailing '\0' character.\r
+ The StringLen required to convert a N bytes Buffer will be a least equal to or greater \r
+ than 2*N + 1.\r
+ @param Buffer The pointer to a input buffer.\r
+ @param BufferSizeInBytes Length in bytes of the input buffer.\r
+ \r
+\r
+ @retval EFI_SUCCESS The convertion is successful. All bytes in Buffer has been convert to the corresponding\r
+ Unicode character and placed into the right place in String.\r
+ @retval EFI_BUFFER_TOO_SMALL StringSizeInBytes is smaller than 2 * N + 1the number of bytes required to\r
+ complete the convertion. \r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+BufToHexString (\r
+ IN OUT CHAR16 *String,\r
+ IN OUT UINTN *StringLen,\r
+ IN CONST UINT8 *Buffer,\r
+ IN UINTN BufferSizeInBytes\r
+ )\r
+;\r
+\r
+\r
+/**\r
+ Convert a Unicode string consisting of hexadecimal characters to a output byte buffer.\r
+\r
+ This function converts a Unicode string consisting of characters in the range of Hexadecimal\r
+ character (L'0' to L'9', L'A' to L'F' and L'a' to L'f') to a output byte buffer. The function will stop\r
+ at the first non-hexadecimal character or the NULL character. The convertion process can be\r
+ simply viewed as the reverse operations defined by BufToHexString. Two Unicode characters will be \r
+ converted into one byte. The first Unicode character represents the Most Significant Nibble and the\r
+ second Unicode character represents the Least Significant Nibble in the output byte. \r
+ The first pair of Unicode characters represents the last byte in the output buffer. The second pair of Unicode \r
+ characters represent the the byte preceding the last byte. This rule applies to the rest pairs of bytes. \r
+ The last pair represent the first byte in the output buffer. \r
+\r
+ For example, a Unciode String L"12345678" will be converted into a buffer wil the following bytes \r
+ (first byte is the byte in the lowest memory address): "0x78, 0x56, 0x34, 0x12".\r
+\r
+ If String has N valid hexadecimal characters for conversion, the caller must make sure Buffer is at least \r
+ N/2 (if N is even) or (N+1)/2 (if N if odd) bytes. \r
+\r
+ @param Buffer The output buffer allocated by the caller.\r
+ @param BufferSizeInBytes On input, the size in bytes of Buffer. On output, it is updated to \r
+ contain the size of the Buffer which is actually used for the converstion.\r
+ For Unicode string with 2*N hexadecimal characters (not including the \r
+ tailing NULL character), N bytes of Buffer will be used for the output.\r
+ @param String The input hexadecimal string.\r
+ @param ConvertedStrLen The number of hexadecimal characters used to produce content in output\r
+ buffer Buffer.\r
+\r
+ @retval RETURN_BUFFER_TOO_SMALL The input BufferSizeInBytes is too small to hold the output. BufferSizeInBytes\r
+ will be updated to the size required for the converstion.\r
+ @retval RETURN_SUCCESS The convertion is successful or the first Unicode character from String\r
+ is hexadecimal. If ConvertedStrLen is not NULL, it is updated\r
+ to the number of hexadecimal character used for the converstion.\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+HexStringToBuf (\r
+ OUT UINT8 *Buffer, \r
+ IN OUT UINTN *BufferSizeInBytes,\r
+ IN CONST CHAR16 *String,\r
+ OUT UINTN *ConvertedStrLen OPTIONAL\r
+ )\r
+;\r
+\r
#endif\r
\r
EFI_DPC_PROTOCOL *mDpc = NULL;\r
\r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mNetLibHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};\r
+\r
//\r
// All the supported IP4 maskes in host byte order.\r
//\r
// Convert the mac address into a unicode string.\r
//\r
for (Index = 0; Index < Mode->HwAddressSize; Index++) {\r
- MacAddress[Index * 2] = NibbleToHexChar ((UINT8) (Mode->CurrentAddress.Addr[Index] >> 4));\r
- MacAddress[Index * 2 + 1] = NibbleToHexChar (Mode->CurrentAddress.Addr[Index]);\r
+ MacAddress[Index * 2] = (CHAR16) mNetLibHexStr[(Mode->CurrentAddress.Addr[Index] >> 4) & 0x0F];\r
+ MacAddress[Index * 2 + 1] = (CHAR16) mNetLibHexStr[Mode->CurrentAddress.Addr[Index] & 0x0F];\r
}\r
\r
MacAddress[Mode->HwAddressSize * 2] = L'\0';\r
\r
CONST EFI_FORM_BROWSER2_PROTOCOL *mFormBrowser2 = NULL;\r
CONST EFI_HII_CONFIG_ROUTING_PROTOCOL *mIfrSupportLibHiiConfigRouting = NULL;\r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 mIfrSupportLibHexStr[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};\r
\r
/**\r
This function locate FormBrowser2 protocols for later usage.\r
FreePool (ConfigRequest);\r
return Status;\r
}\r
+\r
+/**\r
+ Test if a Unicode character is a hexadecimal digit. If true, the input\r
+ Unicode character is converted to a byte. \r
+\r
+ This function tests if a Unicode character is a hexadecimal digit. If true, the input\r
+ Unicode character is converted to a byte. For example, Unicode character\r
+ L'A' will be converted to 0x0A. \r
+\r
+ If Digit is NULL, then ASSERT.\r
+\r
+ @param Digit The output hexadecimal digit.\r
+\r
+ @param Char The input Unicode character.\r
+\r
+ @retval TRUE Char is in the range of Hexadecimal number. Digit is updated\r
+ to the byte value of the number.\r
+ @retval FALSE Char is not in the range of Hexadecimal number. Digit is keep\r
+ intact.\r
+\r
+**/\r
+BOOLEAN\r
+EFIAPI\r
+IsHexDigit (\r
+ OUT UINT8 *Digit,\r
+ IN CHAR16 Char\r
+ )\r
+{\r
+ ASSERT (Digit != NULL);\r
+ \r
+ if ((Char >= L'0') && (Char <= L'9')) {\r
+ *Digit = (UINT8) (Char - L'0');\r
+ return TRUE;\r
+ }\r
+\r
+ if ((Char >= L'A') && (Char <= L'F')) {\r
+ *Digit = (UINT8) (Char - L'A' + 0x0A);\r
+ return TRUE;\r
+ }\r
+\r
+ if ((Char >= L'a') && (Char <= L'f')) {\r
+ *Digit = (UINT8) (Char - L'a' + 0x0A);\r
+ return TRUE;\r
+ }\r
+\r
+ return FALSE;\r
+}\r
+\r
+/** \r
+ Convert binary buffer to a Unicode String in a specified sequence. \r
+\r
+ This function converts bytes in the memory block pointed by Buffer to a Unicode String Str. \r
+ Each byte will be represented by two Unicode characters. For example, byte 0xA1 will \r
+ be converted into two Unicode character L'A' and L'1'. In the output String, the Unicode Character \r
+ for the Most Significant Nibble will be put before the Unicode Character for the Least Significant\r
+ Nibble. The output string for the buffer containing a single byte 0xA1 will be L"A1". \r
+ For a buffer with multiple bytes, the Unicode character produced by the first byte will be put into the \r
+ the last character in the output string. The one next to first byte will be put into the\r
+ character before the last character. This rules applies to the rest of the bytes. The Unicode\r
+ character by the last byte will be put into the first character in the output string. For example,\r
+ the input buffer for a 64-bits unsigned integer 0x12345678abcdef1234 will be converted to\r
+ a Unicode string equal to L"12345678abcdef1234".\r
+\r
+ @param String On input, String is pointed to the buffer allocated for the convertion.\r
+ @param StringLen The Length of String buffer to hold the output String. The length must include the tailing '\0' character.\r
+ The StringLen required to convert a N bytes Buffer will be a least equal to or greater \r
+ than 2*N + 1.\r
+ @param Buffer The pointer to a input buffer.\r
+ @param BufferSizeInBytes Length in bytes of the input buffer.\r
+\r
+\r
+ @retval EFI_SUCCESS The convertion is successful. All bytes in Buffer has been convert to the corresponding\r
+ Unicode character and placed into the right place in String.\r
+ @retval EFI_BUFFER_TOO_SMALL StringSizeInBytes is smaller than 2 * N + 1the number of bytes required to\r
+ complete the convertion. \r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+BufToHexString (\r
+ IN OUT CHAR16 *String,\r
+ IN OUT UINTN *StringLen,\r
+ IN CONST UINT8 *Buffer,\r
+ IN UINTN BufferSizeInBytes\r
+ )\r
+{\r
+ UINTN Idx;\r
+ UINT8 Byte;\r
+ UINTN StrLen;\r
+\r
+ //\r
+ // Make sure string is either passed or allocate enough.\r
+ // It takes 2 Unicode characters (4 bytes) to represent 1 byte of the binary buffer.\r
+ // Plus the Unicode termination character.\r
+ //\r
+ StrLen = BufferSizeInBytes * 2;\r
+ if (StrLen > ((*StringLen) - 1)) {\r
+ *StringLen = StrLen + 1;\r
+ return RETURN_BUFFER_TOO_SMALL;\r
+ }\r
+\r
+ *StringLen = StrLen + 1;\r
+ //\r
+ // Ends the string.\r
+ //\r
+ String[StrLen] = L'\0'; \r
+\r
+ for (Idx = 0; Idx < BufferSizeInBytes; Idx++) {\r
+ Byte = Buffer[Idx];\r
+ String[StrLen - 1 - Idx * 2] = mIfrSupportLibHexStr [Byte & 0xF];\r
+ String[StrLen - 2 - Idx * 2] = mIfrSupportLibHexStr [Byte >> 4];\r
+ }\r
+\r
+ return RETURN_SUCCESS;\r
+}\r
+\r
+\r
+/**\r
+ Convert a Unicode string consisting of hexadecimal characters to a output byte buffer.\r
+\r
+ This function converts a Unicode string consisting of characters in the range of Hexadecimal\r
+ character (L'0' to L'9', L'A' to L'F' and L'a' to L'f') to a output byte buffer. The function will stop\r
+ at the first non-hexadecimal character or the NULL character. The convertion process can be\r
+ simply viewed as the reverse operations defined by BufToHexString. Two Unicode characters will be \r
+ converted into one byte. The first Unicode character represents the Most Significant Nibble and the\r
+ second Unicode character represents the Least Significant Nibble in the output byte. \r
+ The first pair of Unicode characters represents the last byte in the output buffer. The second pair of Unicode \r
+ characters represent the the byte preceding the last byte. This rule applies to the rest pairs of bytes. \r
+ The last pair represent the first byte in the output buffer. \r
+\r
+ For example, a Unciode String L"12345678" will be converted into a buffer wil the following bytes \r
+ (first byte is the byte in the lowest memory address): "0x78, 0x56, 0x34, 0x12".\r
+\r
+ If String has N valid hexadecimal characters for conversion, the caller must make sure Buffer is at least \r
+ N/2 (if N is even) or (N+1)/2 (if N if odd) bytes. \r
+\r
+ @param Buffer The output buffer allocated by the caller.\r
+ @param BufferSizeInBytes On input, the size in bytes of Buffer. On output, it is updated to \r
+ contain the size of the Buffer which is actually used for the converstion.\r
+ For Unicode string with 2*N hexadecimal characters (not including the \r
+ tailing NULL character), N bytes of Buffer will be used for the output.\r
+ @param String The input hexadecimal string.\r
+ @param ConvertedStrLen The number of hexadecimal characters used to produce content in output\r
+ buffer Buffer.\r
+\r
+ @retval RETURN_BUFFER_TOO_SMALL The input BufferSizeInBytes is too small to hold the output. BufferSizeInBytes\r
+ will be updated to the size required for the converstion.\r
+ @retval RETURN_SUCCESS The convertion is successful or the first Unicode character from String\r
+ is hexadecimal. If ConvertedStrLen is not NULL, it is updated\r
+ to the number of hexadecimal character used for the converstion.\r
+**/\r
+RETURN_STATUS\r
+EFIAPI\r
+HexStringToBuf (\r
+ OUT UINT8 *Buffer, \r
+ IN OUT UINTN *BufferSizeInBytes,\r
+ IN CONST CHAR16 *String,\r
+ OUT UINTN *ConvertedStrLen OPTIONAL\r
+ )\r
+{\r
+ UINTN HexCnt;\r
+ UINTN Idx;\r
+ UINTN BufferLength;\r
+ UINT8 Digit;\r
+ UINT8 Byte;\r
+\r
+ //\r
+ // Find out how many hex characters the string has.\r
+ //\r
+ for (Idx = 0, HexCnt = 0; IsHexDigit (&Digit, String[Idx]); Idx++, HexCnt++);\r
+\r
+ if (HexCnt == 0) {\r
+ *ConvertedStrLen = 0;\r
+ return RETURN_SUCCESS;\r
+ }\r
+ //\r
+ // Two Unicode characters make up 1 buffer byte. Round up.\r
+ //\r
+ BufferLength = (HexCnt + 1) / 2; \r
+\r
+ //\r
+ // Test if buffer is passed enough.\r
+ //\r
+ if (BufferLength > (*BufferSizeInBytes)) {\r
+ *BufferSizeInBytes = BufferLength;\r
+ return RETURN_BUFFER_TOO_SMALL;\r
+ }\r
+\r
+ *BufferSizeInBytes = BufferLength;\r
+\r
+ for (Idx = 0; Idx < HexCnt; Idx++) {\r
+\r
+ IsHexDigit (&Digit, String[HexCnt - 1 - Idx]);\r
+\r
+ //\r
+ // For odd charaters, write the lower nibble for each buffer byte,\r
+ // and for even characters, the upper nibble.\r
+ //\r
+ if ((Idx & 1) == 0) {\r
+ Byte = Digit;\r
+ } else {\r
+ Byte = Buffer[Idx / 2];\r
+ Byte &= 0x0F;\r
+ Byte = (UINT8) (Byte | Digit << 4);\r
+ }\r
+\r
+ Buffer[Idx / 2] = Byte;\r
+ }\r
+\r
+ if (ConvertedStrLen != NULL) {\r
+ *ConvertedStrLen = HexCnt;\r
+ }\r
+\r
+ return RETURN_SUCCESS;\r
+}\r
IN CHAR16 *Str\r
)\r
{\r
- UINTN Rvalue;\r
- UINTN Length;\r
-\r
- ASSERT (Str != NULL);\r
-\r
- //\r
- // convert hex digits\r
- //\r
- Rvalue = 0;\r
- Length = sizeof (UINTN);\r
- HexStringToBuf ((UINT8 *) &Rvalue, &Length, Str, NULL);\r
-\r
- return Rvalue;\r
+ return StrHexToUintn (Str);\r
}\r
\r
/**\r
OUT UINT64 *Data\r
)\r
{\r
- UINTN Length;\r
-\r
- *Data = 0;\r
- Length = sizeof (UINT64);\r
- HexStringToBuf ((UINT8 *) Data, &Length, Str, NULL);\r
+ *Data = StrHexToUint64 (Str);\r
}\r
\r
/**\r
\r
for(Index = 0; Index < StrLength; Index++, Str++) {\r
\r
- IsHexDigit (&Digit, *Str);\r
+ if ((*Str >= L'a') && (*Str <= L'f')) {\r
+ Digit = (UINT8) (*Str - L'a' + 0x0A);\r
+ } else if ((*Str >= L'A') && (*Str <= L'F')) {\r
+ Digit = (UINT8) (*Str - L'A' + 0x0A);\r
+ } else if ((*Str >= L'0') && (*Str <= L'9')) {\r
+ Digit = (UINT8) (*Str - L'0');\r
+ } else {\r
+ return EFI_INVALID_PARAMETER;\r
+ }\r
\r
//\r
// For odd charaters, write the upper nibble for each buffer byte,\r
\r
/**\r
Converts a string to GUID value.\r
+ Guid Format is xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx\r
\r
@param Str The registry format GUID string that contains the GUID value.\r
@param Guid A pointer to the converted GUID value.\r
OUT EFI_GUID *Guid\r
)\r
{\r
- UINTN BufferLength;\r
- UINTN ConvertedStrLen;\r
- EFI_STATUS Status;\r
-\r
- BufferLength = sizeof (Guid->Data1);\r
- Status = HexStringToBuf ((UINT8 *) &Guid->Data1, &BufferLength, Str, &ConvertedStrLen);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
+ //\r
+ // Get the first UINT32 data\r
+ //\r
+ Guid->Data1 = (UINT32) StrHexToUint64 (Str);\r
+ while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {\r
+ Str ++;\r
}\r
- Str += ConvertedStrLen;\r
+ \r
if (IS_HYPHEN (*Str)) {\r
Str++;\r
} else {\r
return EFI_UNSUPPORTED;\r
}\r
-\r
- BufferLength = sizeof (Guid->Data2);\r
- Status = HexStringToBuf ((UINT8 *) &Guid->Data2, &BufferLength, Str, &ConvertedStrLen);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
+ \r
+ //\r
+ // Get the second UINT16 data\r
+ //\r
+ Guid->Data2 = (UINT16) StrHexToUint64 (Str);\r
+ while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {\r
+ Str ++;\r
}\r
- Str += ConvertedStrLen;\r
+\r
if (IS_HYPHEN (*Str)) {\r
Str++;\r
} else {\r
return EFI_UNSUPPORTED;\r
}\r
-\r
- BufferLength = sizeof (Guid->Data3);\r
- Status = HexStringToBuf ((UINT8 *) &Guid->Data3, &BufferLength, Str, &ConvertedStrLen);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
+ \r
+ //\r
+ // Get the third UINT16 data\r
+ //\r
+ Guid->Data3 = (UINT16) StrHexToUint64 (Str);\r
+ while (!IS_HYPHEN (*Str) && !IS_NULL (*Str)) {\r
+ Str ++;\r
}\r
- Str += ConvertedStrLen;\r
+\r
if (IS_HYPHEN (*Str)) {\r
Str++;\r
} else {\r
return EFI_UNSUPPORTED;\r
}\r
\r
+ //\r
+ // Get the followin 8 bytes data\r
+ // \r
StrToBuf (&Guid->Data4[0], 2, Str);\r
//\r
// Skip 2 byte hex chars\r
\r
#include "IScsiImpl.h"\r
\r
-CONST CHAR8 IScsiHexString[] = "0123456789ABCDEFabcdef";\r
+GLOBAL_REMOVE_IF_UNREFERENCED CONST CHAR8 IScsiHexString[] = "0123456789ABCDEFabcdef";\r
\r
/**\r
Removes (trims) specified leading and trailing characters from a string.\r
StrCpy (TempStr, L"0-");\r
} else {\r
TempStr[0] = (CHAR16) IScsiHexString[Lun[2 * Index] >> 4];\r
- TempStr[1] = (CHAR16) IScsiHexString[Lun[2 * Index] & 0xf];\r
+ TempStr[1] = (CHAR16) IScsiHexString[Lun[2 * Index] & 0x0F];\r
TempStr[2] = (CHAR16) IScsiHexString[Lun[2 * Index + 1] >> 4];\r
- TempStr[3] = (CHAR16) IScsiHexString[Lun[2 * Index + 1] & 0xf];\r
+ TempStr[3] = (CHAR16) IScsiHexString[Lun[2 * Index + 1] & 0x0F];\r
TempStr[4] = L'-';\r
TempStr[5] = 0;\r
\r
UINT32 Index;\r
\r
for (Index = 0; Index < Len; Index++) {\r
- Str[3 * Index] = NibbleToHexChar ((UINT8) (Mac->Addr[Index] >> 4));\r
- Str[3 * Index + 1] = NibbleToHexChar (Mac->Addr[Index]);\r
+ Str[3 * Index] = (CHAR16) IScsiHexString[(Mac->Addr[Index] >> 4) & 0x0F];\r
+ Str[3 * Index + 1] = (CHAR16) IScsiHexString[Mac->Addr[Index] & 0x0F];\r
Str[3 * Index + 2] = L'-';\r
}\r
\r
\r
for (Index = 0; Index < BinLength; Index++) {\r
HexStr[Index * 2 + 2] = IScsiHexString[BinBuffer[Index] >> 4];\r
- HexStr[Index * 2 + 3] = IScsiHexString[BinBuffer[Index] & 0xf];\r
+ HexStr[Index * 2 + 3] = IScsiHexString[BinBuffer[Index] & 0x0F];\r
}\r
\r
HexStr[Index * 2 + 2] = '\0';\r
EFI_HII_VALUE Value;\r
CHAR16 *String;\r
CHAR16 *StringPtr;\r
- UINTN BufferSize;\r
\r
Status = PopExpression (&Value);\r
if (EFI_ERROR (Status)) {\r
if (String == NULL) {\r
return EFI_NOT_FOUND;\r
}\r
-\r
+ \r
IfrStrToUpper (String);\r
StringPtr = StrStr (String, L"0X");\r
if (StringPtr != NULL) {\r
//\r
// Hex string\r
//\r
- BufferSize = sizeof (UINT64);\r
- Status = HexStringToBuf ((UINT8 *) &Result->Value.u64, &BufferSize, StringPtr + 2, NULL);\r
+ Result->Value.u64 = StrHexToUint64 (String);\r
} else {\r
//\r
- // BUGBUG: Need handle decimal string\r
+ // decimal string\r
//\r
+ Result->Value.u64 = StrDecimalToUint64 (String);\r
}\r
FreePool (String);\r
} else {\r
IN CONST CHAR16 *String\r
);\r
\r
-/**\r
- Convert a nibble in the low 4 bits of a byte to a Unicode hexadecimal character.\r
-\r
- This function converts a nibble in the low 4 bits of a byte to a Unicode hexadecimal \r
- character For example, the nibble 0x01 and 0x0A will converted to L'1' and L'A' \r
- respectively.\r
-\r
- The upper nibble in the input byte will be masked off.\r
-\r
- @param Nibble The nibble which is in the low 4 bits of the input byte.\r
-\r
- @retval CHAR16 The Unicode hexadecimal character.\r
- \r
-**/\r
-CHAR16\r
-EFIAPI\r
-NibbleToHexChar (\r
- IN UINT8 Nibble\r
- );\r
-\r
-/** \r
- Convert binary buffer to a Unicode String in a specified sequence. \r
-\r
- This function converts bytes in the memory block pointed by Buffer to a Unicode String Str. \r
- Each byte will be represented by two Unicode characters. For example, byte 0xA1 will \r
- be converted into two Unicode character L'A' and L'1'. In the output String, the Unicode Character \r
- for the Most Significant Nibble will be put before the Unicode Character for the Least Significant\r
- Nibble. The output string for the buffer containing a single byte 0xA1 will be L"A1". \r
- For a buffer with multiple bytes, the Unicode character produced by the first byte will be put into the \r
- the last character in the output string. The one next to first byte will be put into the\r
- character before the last character. This rules applies to the rest of the bytes. The Unicode\r
- character by the last byte will be put into the first character in the output string. For example,\r
- the input buffer for a 64-bits unsigned integer 0x12345678abcdef1234 will be converted to\r
- a Unicode string equal to L"12345678abcdef1234".\r
-\r
- @param String On input, String is pointed to the buffer allocated for the convertion.\r
- @param StringLen The Length of String buffer to hold the output String. The length must include the tailing '\0' character.\r
- The StringLen required to convert a N bytes Buffer will be a least equal to or greater \r
- than 2*N + 1.\r
- @param Buffer The pointer to a input buffer.\r
- @param BufferSizeInBytes Length in bytes of the input buffer.\r
- \r
-\r
- @retval EFI_SUCCESS The convertion is successful. All bytes in Buffer has been convert to the corresponding\r
- Unicode character and placed into the right place in String.\r
- @retval EFI_BUFFER_TOO_SMALL StringSizeInBytes is smaller than 2 * N + 1the number of bytes required to\r
- complete the convertion. \r
-**/\r
-RETURN_STATUS\r
-EFIAPI\r
-BufToHexString (\r
- IN OUT CHAR16 *String,\r
- IN OUT UINTN *StringLen,\r
- IN CONST UINT8 *Buffer,\r
- IN UINTN BufferSizeInBytes\r
- );\r
-\r
-\r
-/**\r
- Convert a Unicode string consisting of hexadecimal characters to a output byte buffer.\r
-\r
- This function converts a Unicode string consisting of characters in the range of Hexadecimal\r
- character (L'0' to L'9', L'A' to L'F' and L'a' to L'f') to a output byte buffer. The function will stop\r
- at the first non-hexadecimal character or the NULL character. The convertion process can be\r
- simply viewed as the reverse operations defined by BufToHexString. Two Unicode characters will be \r
- converted into one byte. The first Unicode character represents the Most Significant Nibble and the\r
- second Unicode character represents the Least Significant Nibble in the output byte. \r
- The first pair of Unicode characters represents the last byte in the output buffer. The second pair of Unicode \r
- characters represent the the byte preceding the last byte. This rule applies to the rest pairs of bytes. \r
- The last pair represent the first byte in the output buffer. \r
-\r
- For example, a Unciode String L"12345678" will be converted into a buffer wil the following bytes \r
- (first byte is the byte in the lowest memory address): "0x78, 0x56, 0x34, 0x12".\r
-\r
- If String has N valid hexadecimal characters for conversion, the caller must make sure Buffer is at least \r
- N/2 (if N is even) or (N+1)/2 (if N if odd) bytes. \r
-\r
- @param Buffer The output buffer allocated by the caller.\r
- @param BufferSizeInBytes On input, the size in bytes of Buffer. On output, it is updated to \r
- contain the size of the Buffer which is actually used for the converstion.\r
- For Unicode string with 2*N hexadecimal characters (not including the \r
- tailing NULL character), N bytes of Buffer will be used for the output.\r
- @param String The input hexadecimal string.\r
- @param ConvertedStrLen The number of hexadecimal characters used to produce content in output\r
- buffer Buffer.\r
-\r
- @retval RETURN_BUFFER_TOO_SMALL The input BufferSizeInBytes is too small to hold the output. BufferSizeInBytes\r
- will be updated to the size required for the converstion.\r
- @retval RETURN_SUCCESS The convertion is successful or the first Unicode character from String\r
- is hexadecimal. If ConvertedStrLen is not NULL, it is updated\r
- to the number of hexadecimal character used for the converstion.\r
-**/\r
-RETURN_STATUS\r
-EFIAPI\r
-HexStringToBuf (\r
- OUT UINT8 *Buffer, \r
- IN OUT UINTN *BufferSizeInBytes,\r
- IN CONST CHAR16 *String,\r
- OUT UINTN *ConvertedStrLen OPTIONAL\r
- );\r
-\r
-\r
-/**\r
- Test if a Unicode character is a hexadecimal digit. If true, the input\r
- Unicode character is converted to a byte. \r
-\r
- This function tests if a Unicode character is a hexadecimal digit. If true, the input\r
- Unicode character is converted to a byte. For example, Unicode character\r
- L'A' will be converted to 0x0A. \r
-\r
- If Digit is NULL, then ASSERT.\r
-\r
- @param Digit The output hexadecimal digit.\r
-\r
- @param Char The input Unicode character.\r
-\r
- @retval TRUE Char is in the range of Hexadecimal number. Digit is updated\r
- to the byte value of the number.\r
- @retval FALSE Char is not in the range of Hexadecimal number. Digit is keep\r
- intact.\r
- \r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-IsHexDigit (\r
- OUT UINT8 *Digit,\r
- IN CHAR16 Char\r
- );\r
-\r
/**\r
Convert a Null-terminated Unicode string to a Null-terminated\r
ASCII string and returns the ASCII string.\r
ASSERT ((Value & 0xf) < 0xa);\r
return (UINT8) ((Value >> 4) * 10 + (Value & 0xf));\r
}\r
-\r
-\r
-/**\r
- Convert a nibble in the low 4 bits of a byte to a Unicode hexadecimal character.\r
-\r
- This function converts a nibble in the low 4 bits of a byte to a Unicode hexadecimal \r
- character For example, the nibble 0x01 and 0x0A will converted to L'1' and L'A' \r
- respectively.\r
-\r
- The upper nibble in the input byte will be masked off.\r
-\r
- @param Nibble The nibble which is in the low 4 bits of the input byte.\r
-\r
- @retval CHAR16 The Unicode hexadecimal character.\r
-\r
-**/\r
-CHAR16\r
-EFIAPI\r
-NibbleToHexChar (\r
- IN UINT8 Nibble\r
- )\r
-{\r
- Nibble &= 0x0F;\r
- if (Nibble <= 0x9) {\r
- return (CHAR16)(Nibble + L'0');\r
- }\r
-\r
- return (CHAR16)(Nibble - 0xA + L'A');\r
-}\r
-\r
-/** \r
- Convert binary buffer to a Unicode String in a specified sequence. \r
-\r
- This function converts bytes in the memory block pointed by Buffer to a Unicode String Str. \r
- Each byte will be represented by two Unicode characters. For example, byte 0xA1 will \r
- be converted into two Unicode character L'A' and L'1'. In the output String, the Unicode Character \r
- for the Most Significant Nibble will be put before the Unicode Character for the Least Significant\r
- Nibble. The output string for the buffer containing a single byte 0xA1 will be L"A1". \r
- For a buffer with multiple bytes, the Unicode character produced by the first byte will be put into the \r
- the last character in the output string. The one next to first byte will be put into the\r
- character before the last character. This rules applies to the rest of the bytes. The Unicode\r
- character by the last byte will be put into the first character in the output string. For example,\r
- the input buffer for a 64-bits unsigned integer 0x12345678abcdef1234 will be converted to\r
- a Unicode string equal to L"12345678abcdef1234".\r
-\r
- @param String On input, String is pointed to the buffer allocated for the convertion.\r
- @param StringLen The Length of String buffer to hold the output String. The length must include the tailing '\0' character.\r
- The StringLen required to convert a N bytes Buffer will be a least equal to or greater \r
- than 2*N + 1.\r
- @param Buffer The pointer to a input buffer.\r
- @param BufferSizeInBytes Length in bytes of the input buffer.\r
-\r
-\r
- @retval EFI_SUCCESS The convertion is successful. All bytes in Buffer has been convert to the corresponding\r
- Unicode character and placed into the right place in String.\r
- @retval EFI_BUFFER_TOO_SMALL StringSizeInBytes is smaller than 2 * N + 1the number of bytes required to\r
- complete the convertion. \r
-**/\r
-RETURN_STATUS\r
-EFIAPI\r
-BufToHexString (\r
- IN OUT CHAR16 *String,\r
- IN OUT UINTN *StringLen,\r
- IN CONST UINT8 *Buffer,\r
- IN UINTN BufferSizeInBytes\r
- )\r
-{\r
- UINTN Idx;\r
- UINT8 Byte;\r
- UINTN StrLen;\r
-\r
- //\r
- // Make sure string is either passed or allocate enough.\r
- // It takes 2 Unicode characters (4 bytes) to represent 1 byte of the binary buffer.\r
- // Plus the Unicode termination character.\r
- //\r
- StrLen = BufferSizeInBytes * 2;\r
- if (StrLen > ((*StringLen) - 1)) {\r
- *StringLen = StrLen + 1;\r
- return RETURN_BUFFER_TOO_SMALL;\r
- }\r
-\r
- *StringLen = StrLen + 1;\r
- //\r
- // Ends the string.\r
- //\r
- String[StrLen] = L'\0'; \r
-\r
- for (Idx = 0; Idx < BufferSizeInBytes; Idx++) {\r
-\r
- Byte = Buffer[Idx];\r
- String[StrLen - 1 - Idx * 2] = NibbleToHexChar (Byte);\r
- String[StrLen - 2 - Idx * 2] = NibbleToHexChar ((UINT8)(Byte >> 4));\r
- }\r
-\r
- return RETURN_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Convert a Unicode string consisting of hexadecimal characters to a output byte buffer.\r
-\r
- This function converts a Unicode string consisting of characters in the range of Hexadecimal\r
- character (L'0' to L'9', L'A' to L'F' and L'a' to L'f') to a output byte buffer. The function will stop\r
- at the first non-hexadecimal character or the NULL character. The convertion process can be\r
- simply viewed as the reverse operations defined by BufToHexString. Two Unicode characters will be \r
- converted into one byte. The first Unicode character represents the Most Significant Nibble and the\r
- second Unicode character represents the Least Significant Nibble in the output byte. \r
- The first pair of Unicode characters represents the last byte in the output buffer. The second pair of Unicode \r
- characters represent the the byte preceding the last byte. This rule applies to the rest pairs of bytes. \r
- The last pair represent the first byte in the output buffer. \r
-\r
- For example, a Unciode String L"12345678" will be converted into a buffer wil the following bytes \r
- (first byte is the byte in the lowest memory address): "0x78, 0x56, 0x34, 0x12".\r
-\r
- If String has N valid hexadecimal characters for conversion, the caller must make sure Buffer is at least \r
- N/2 (if N is even) or (N+1)/2 (if N if odd) bytes. \r
-\r
- @param Buffer The output buffer allocated by the caller.\r
- @param BufferSizeInBytes On input, the size in bytes of Buffer. On output, it is updated to \r
- contain the size of the Buffer which is actually used for the converstion.\r
- For Unicode string with 2*N hexadecimal characters (not including the \r
- tailing NULL character), N bytes of Buffer will be used for the output.\r
- @param String The input hexadecimal string.\r
- @param ConvertedStrLen The number of hexadecimal characters used to produce content in output\r
- buffer Buffer.\r
-\r
- @retval RETURN_BUFFER_TOO_SMALL The input BufferSizeInBytes is too small to hold the output. BufferSizeInBytes\r
- will be updated to the size required for the converstion.\r
- @retval RETURN_SUCCESS The convertion is successful or the first Unicode character from String\r
- is hexadecimal. If ConvertedStrLen is not NULL, it is updated\r
- to the number of hexadecimal character used for the converstion.\r
-**/\r
-RETURN_STATUS\r
-EFIAPI\r
-HexStringToBuf (\r
- OUT UINT8 *Buffer, \r
- IN OUT UINTN *BufferSizeInBytes,\r
- IN CONST CHAR16 *String,\r
- OUT UINTN *ConvertedStrLen OPTIONAL\r
- )\r
-{\r
- UINTN HexCnt;\r
- UINTN Idx;\r
- UINTN BufferLength;\r
- UINT8 Digit;\r
- UINT8 Byte;\r
-\r
- //\r
- // Find out how many hex characters the string has.\r
- //\r
- for (Idx = 0, HexCnt = 0; IsHexDigit (&Digit, String[Idx]); Idx++, HexCnt++);\r
-\r
- if (HexCnt == 0) {\r
- *ConvertedStrLen = 0;\r
- return RETURN_SUCCESS;\r
- }\r
- //\r
- // Two Unicode characters make up 1 buffer byte. Round up.\r
- //\r
- BufferLength = (HexCnt + 1) / 2; \r
-\r
- //\r
- // Test if buffer is passed enough.\r
- //\r
- if (BufferLength > (*BufferSizeInBytes)) {\r
- *BufferSizeInBytes = BufferLength;\r
- return RETURN_BUFFER_TOO_SMALL;\r
- }\r
-\r
- *BufferSizeInBytes = BufferLength;\r
-\r
- for (Idx = 0; Idx < HexCnt; Idx++) {\r
-\r
- IsHexDigit (&Digit, String[HexCnt - 1 - Idx]);\r
-\r
- //\r
- // For odd charaters, write the lower nibble for each buffer byte,\r
- // and for even characters, the upper nibble.\r
- //\r
- if ((Idx & 1) == 0) {\r
- Byte = Digit;\r
- } else {\r
- Byte = Buffer[Idx / 2];\r
- Byte &= 0x0F;\r
- Byte = (UINT8) (Byte | Digit << 4);\r
- }\r
-\r
- Buffer[Idx / 2] = Byte;\r
- }\r
-\r
- if (ConvertedStrLen != NULL) {\r
- *ConvertedStrLen = HexCnt;\r
- }\r
-\r
- return RETURN_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Test if a Unicode character is a hexadecimal digit. If true, the input\r
- Unicode character is converted to a byte. \r
-\r
- This function tests if a Unicode character is a hexadecimal digit. If true, the input\r
- Unicode character is converted to a byte. For example, Unicode character\r
- L'A' will be converted to 0x0A. \r
-\r
- If Digit is NULL, then ASSERT.\r
-\r
- @param Digit The output hexadecimal digit.\r
-\r
- @param Char The input Unicode character.\r
-\r
- @retval TRUE Char is in the range of Hexadecimal number. Digit is updated\r
- to the byte value of the number.\r
- @retval FALSE Char is not in the range of Hexadecimal number. Digit is keep\r
- intact.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-IsHexDigit (\r
- OUT UINT8 *Digit,\r
- IN CHAR16 Char\r
- )\r
-{\r
- ASSERT (Digit != NULL);\r
- \r
- if ((Char >= L'0') && (Char <= L'9')) {\r
- *Digit = (UINT8) (Char - L'0');\r
- return TRUE;\r
- }\r
-\r
- if ((Char >= L'A') && (Char <= L'F')) {\r
- *Digit = (UINT8) (Char - L'A' + 0x0A);\r
- return TRUE;\r
- }\r
-\r
- if ((Char >= L'a') && (Char <= L'f')) {\r
- *Digit = (UINT8) (Char - L'a' + 0x0A);\r
- return TRUE;\r
- }\r
-\r
- return FALSE;\r
-}\r
-\r
-\r
projects / mirror_edk2.git / commitdiff