int ft_atoi(const char *str)
{
int i;
int res;
int neg;
i = 0;
res = 0;
neg = 0;
while (ft_sp(str[i]) || (str[i] == '+' && ft_isdigit(str[i + 1])))
i++;
if (str[i] == '-')
{
neg = 1;
i++;
}
while (ft_isdigit(str[i]))
{
res += (str[i] - '0');
if (str[i + 1] && ft_isdigit(str[i + 1]))
res *= 10;
i++;
}
if (neg == 1)
res *= -1;
return (res);
}
char *ft_strtrim(const char *s)
{
char *dst;
size_t i;
size_t e;
if (!s)
return (NULL);
i = 0;
while (ft_sp(*s++))
i++;
s -= i + 1;
e = ft_strlen(s) - 1;
if (!*s || e == i - 1)
return (dst = ft_strnew(1));
if (i != (e + 1))
while (ft_sp(s[e]))
e--;
dst = ft_strsub(s, i, (e - i + 1));
return (dst);
}
