93 lines
2 KiB
C
93 lines
2 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_atoi_base.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2016/08/07 12:01:59 by jhalford #+# #+# */
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/* Updated: 2016/08/10 16:15:04 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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void ft_putchar(char c);
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int get_size_21(char *str)
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{
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int i;
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int j;
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i = 0;
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while (str[i] != '\0')
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{
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if (str[i] == '+' || str[i] == '-')
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return (0);
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if (str[i] < 32 || str[i] > 126)
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return (0);
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j = 0;
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while (j < i)
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{
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if (str[j] == str[i])
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return (0);
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j++;
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}
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i++;
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}
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return (i);
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}
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int get_pos(char c, char *str)
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{
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int i;
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char *s;
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s = str;
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i = 0;
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while (c != *s)
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{
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if (!*s)
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return (s - str);
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s++;
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}
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return (s - str);
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}
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int ft_check_str(char *str, char *base, int base_size)
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{
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while (*str)
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{
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if (!(get_pos(*str, base) < base_size || *str == '-' || *str == '+'))
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return (0);
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str++;
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}
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return (1);
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}
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int ft_atoi_base(char *str, char *base)
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{
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int base_size;
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int res;
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int sign;
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base_size = get_size_21(base);
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res = 0;
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sign = 1;
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if (!ft_check_str(str, base, base_size))
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return (0);
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if (base_size > 1)
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{
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if (*str == '-' || *str == '+')
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{
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if (get_pos(*(str + 1), base) < base_size)
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{
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sign = (*str == '+') ? 1 : -1;
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str++;
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}
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else
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return (0);
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}
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while (get_pos(*str, base) < base_size)
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res = res * base_size + sign * get_pos(*str++, base);
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}
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return (res);
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}
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