Function ToUtf16

Sources/Shared/Utf8.cpp:123–137

#if defined(DEATH_TARGET_WINDOWS)

	Containers::Array<wchar_t> ToUtf16(const char* source, std::int32_t sourceSize)
	{
		// MBtoWC counts the trailing \0 into the size, which we have to cut. It also can't be called with a zero
		// size for some stupid reason, in that case just set the result size to zero. We can't just `return {}`,
		// because the output array is guaranteed to be a pointer to a null-terminated string.
		const std::size_t lengthNeeded = (sourceSize == 0 ? 0 : ::MultiByteToWideChar(CP_UTF8, 0, source, sourceSize, nullptr, 0) - (sourceSize == -1 ? 1 : 0));

		// Create the array with a sentinel null terminator. If size is zero, this is just a single null terminator.
		Containers::Array<wchar_t> result{Containers::NoInit, lengthNeeded + 1};
		result[lengthNeeded] = L'\0';

		if (sourceSize != 0) ::MultiByteToWideChar(CP_UTF8, 0, source, sourceSize, result.data(), (std::int32_t)lengthNeeded);
		// Return the size without the null terminator
		return Containers::Array<wchar_t>(result.release(), lengthNeeded);
	}

	std::int32_t ToUtf16(wchar_t* destination, std::int32_t destinationSize, const char* source, std::int32_t sourceSize)
	{