Method operator()

LuaSTGPlus/UnicodeStringEncoding.cpp:152–196

	uint8_t m_cBuf[6];
public:
	bool operator() (char32_t input, uint8_t*& output, size_t& size)
	{
		int c;
		uint32_t uinput = (uint32_t)input;

		if (uinput < 0x80u)
			c = 0;
		else if (uinput < 0x800u)
			c = 1;
		else if (uinput < 0x10000u)
			c = 2;
		else if (uinput < 0x200000u)
			c = 3;
		else if (uinput < 0x4000000u)
			c = 4;
		else if (uinput < 0x80000000u)
			c = 5;
		else
		{
			m_cBuf[0] = (uint8_t)'?';
			output = m_cBuf;
			size = 1;
			return true;
		}

		if (c == 0)
			m_cBuf[0] = uinput;
		else
		{
			// ����ֽ�
			for (int i = c; i > 0; --i)
			{
				m_cBuf[i] = (uinput & 0x3Fu) | 0x80u;
				uinput >>= 6;
			}

			// �������
			m_cBuf[0] = (0xFEu << (6 - c)) | uinput;
		}

		// �
		output = m_cBuf;
		size = c + 1;
		return true;
	}
};

class Utf16Encoder