inline int utf8codepointEE(const byte *s, const byte *z, int &lmod, int & dep)
{
	if (s < z)
	{
		word code = (byte)*s++;
		int codePoint = 0;
		
		if(code < 0x80)
		{
			dep = 1;
			lmod = 1;
			return code;
		}
		else if (code < 0xC2)
		{
			dep = 1;
			lmod = 3;
			return 0xEE00 + code;
		}
		else if (code < 0xE0)
		{
			if(s >= z)
				return -1;
			if (s[0] < 0x80 || s[0] >= 0xC0)
			{
				dep = 1;
				lmod = 3;
				return 0xEE00 + code;
			}
			codePoint = ((code - 0xC0) << 6) + *s - 0x80;
			if(codePoint < 0x80 || codePoint > 0x07FF)
			{
				dep = 1;
				lmod = 3;
				return 0xEE00 + code;
			}
			else
			{
				dep = 2;
				lmod = 2;
				return codePoint;
			}
		}
		else if (code < 0xF0)
		{
			if(s + 1 >= z)
				return -1;
			if(s[0] < 0x80 || s[0] >= 0xC0 || s[1] < 0x80 || s[1] >= 0xC0)
			{
				dep = 1;
				lmod = 3;
				return 0xEE00 + code;
			}
			codePoint = ((code - 0xE0) << 12) + ((s[0] - 0x80) << 6) + s[1] - 0x80;
			if(codePoint < 0x0800 || codePoint > 0xFFFF)
			{
				dep = 1;
				lmod = 3;
				return 0xEE00 + code;
			}
			else
			{
				dep = 3;
				lmod = 3;
				return codePoint;
			}
		}
		else if (code < 0xF5)
		{
			if(s + 2 >= z)
				return -1;
			if(s[0] < 0x80 || s[0] >= 0xc0 || s[1] < 0x80 || s[1] >= 0xc0 ||
				   s[2] < 0x80 || s[2] >= 0xc0)
			{
				dep = 1;
				lmod = 3;
				return 0xEE00 + code;
			}
			codePoint = ((code - 0xf0) << 18) + ((s[0] - 0x80) << 12) +
				            ((s[1] - 0x80) << 6) + s[2] - 0x80;
			if(codePoint < 0x010000 || codePoint > 0x10FFFF)
			{
				dep = 1;
				lmod = 3;
				return 0xEE00 + code;
			}
			else
			{
				dep = 1;
				lmod = 3;	
				return codePoint;
			}
		}
		else 
		{
			dep = 1;
			lmod = 3;
			return 0xEE00 + code;
		}
	}
	else
		return -1;
}

int utf8lenEE(const char *_s, int len)
{
	const byte *s = (const byte *)_s;
	const byte *lim = s + len;
	int codePoint = 0;
	int length = 0;
	while(s < lim) {
		int lmod, dep;
		int codePoint = utf8codepointEE(s, lim, lmod, dep);
		if (codePoint == -1)
			return -1;
		
		length += lmod;
		s += dep;
	}
	return length;
}