Function str2int

ut.h:720–738

* Convert a str into integer */

 * Convert a str into integer
 */
static inline int str2int(const str* _s, unsigned int* _r)
{
	int i;

	if (_s==0 || _s->s == 0 || _s->len == 0 || _r == 0)
		return -1;

	*_r = 0;
	for(i = 0; i < _s->len; i++) {
		if ((_s->s[i] >= '0') && (_s->s[i] <= '9')) {
			*_r *= 10;
			*_r += _s->s[i] - '0';
		} else {
			return -1;
		}
	}

	return 0;
}

/*
 * Convert a str into a big integer