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ft_substr.c
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ft_substr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_substr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: anarodri <anarodri@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/10/06 10:54:16 by anarodri #+# #+# */
/* Updated: 2022/12/15 12:51:09 by anarodri ### ########.fr */
/* */
/* ************************************************************************** */
/* Allocates (with malloc(3)) and returns a substring from the string "s".
** The substring begins at index "start" and is of maximum size "len".
** Return: the substring created, NULL if the allocation fails.
*/
#include "../libft.h"
#include <stdio.h>
char *ft_substr(char const *s, unsigned int start, size_t len)
{
char *substr;
size_t i;
size_t s_len;
i = 0;
if (s == NULL)
return (NULL);
s_len = ft_strlen(s);
if (start >= s_len)
len = '\0';
else if (s_len < start + len)
len = s_len - start;
substr = (char *)malloc(sizeof(char) * (len + 1));
if (substr == 0)
return (NULL);
while (s[start] != '\0' && start <= s_len && len--)
substr[i++] = s[start++];
substr[i] = '\0';
return (substr);
}