85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
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/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_ultoabase.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: cchauvet <cchauvet@student.42angoulem +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/09/29 13:49:45 by cchauvet #+# #+# */
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/* Updated: 2022/10/10 14:45:46 by cchauvet ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "printf.h"
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static size_t ft_str_size(unsigned long n, size_t base_size)
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{
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size_t size;
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size = 1;
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if (n == 0)
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return (2);
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while (n != 0)
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{
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n = n / base_size;
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size++;
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}
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return (size);
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}
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static int ft_isdup(char *str)
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{
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char c;
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size_t i;
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while (*str != 0)
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{
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c = *str;
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i = 1;
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while (str[i] != 0)
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{
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if (str[i] == c)
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return (1);
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i++;
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}
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str++;
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}
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return (0);
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}
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static size_t ft_base_size(char *base)
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{
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size_t len;
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if (ft_isdup(base))
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return (0);
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len = ft_strlen(base);
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if (len < 2)
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return (0);
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return (len);
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}
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char *ft_ultoabase(unsigned long n, char *base)
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{
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size_t base_size;
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size_t str_size;
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char *out;
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if (base == NULL)
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return (NULL);
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base_size = ft_base_size(base);
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if (base_size == 0)
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return (NULL);
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str_size = ft_str_size(n, base_size);
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out = malloc(str_size * sizeof(char *));
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if (out == NULL)
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return (NULL);
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out[--str_size] = 0;
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while (0 < str_size)
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{
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out[--str_size] = base[n % base_size];
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n = n / base_size;
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}
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return (out);
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}
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