unsigned int parseInt(char* ptr) {
	const char *s = ptr;
	uint r = 0;
	uint p = 0;
	while (s[p]) {
		char c = s[p];
		if ((c < '0') || (c > '9')) {
			return 0;
		}
		r = r * 10 + (c - '0');
		++p;
	}
	return r;
};