Function StringToGuid

BaseTools/Source/C/Common/ParseInf.c:362–462

}

EFI_STATUS
StringToGuid (
  IN CHAR8      *AsciiGuidBuffer,
  OUT EFI_GUID  *GuidBuffer
  )
/*++

Routine Description:

  Converts a string to an EFI_GUID.  The string must be in the
  xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx format.

Arguments:

  AsciiGuidBuffer - pointer to ascii string
  GuidBuffer      - pointer to destination Guid

Returns:

  EFI_ABORTED             Could not convert the string
  EFI_SUCCESS             The string was successfully converted
  EFI_INVALID_PARAMETER   Input parameter is invalid.

--*/
{
  INT32 Index;
  int   Data1;
  int   Data2;
  int   Data3;
  int   Data4[8];

  if (AsciiGuidBuffer == NULL || GuidBuffer == NULL) {
    return EFI_INVALID_PARAMETER;
  }
  //
  // Check Guid Format strictly xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
  //
  for (Index = 0; AsciiGuidBuffer[Index] != '\0' && Index < 37; Index ++) {
    if (Index == 8 || Index == 13 || Index == 18 || Index == 23) {
      if (AsciiGuidBuffer[Index] != '-') {
        break;
      }
    } else {
      if (((AsciiGuidBuffer[Index] >= '0') && (AsciiGuidBuffer[Index] <= '9')) ||
         ((AsciiGuidBuffer[Index] >= 'a') && (AsciiGuidBuffer[Index] <= 'f')) ||
         ((AsciiGuidBuffer[Index] >= 'A') && (AsciiGuidBuffer[Index] <= 'F'))) {
        continue;
      } else {
        break;
      }
    }
  }

  if (Index < 36 || AsciiGuidBuffer[36] != '\0') {
    Error (NULL, 0, 1003, "Invalid option value", "Incorrect GUID \"%s\"\n  Correct Format \"xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx\"", AsciiGuidBuffer);
    return EFI_ABORTED;
  }