Push_swap/libft/ft_substr.c

35 lines
1.2 KiB
C

/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_substr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: lfirmin <lfirmin@student.42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/05/22 00:15:54 by lfirmin #+# #+# */
/* Updated: 2024/05/24 08:28:01 by lfirmin ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_substr(char const *s, unsigned int start, size_t len)
{
char *sub;
size_t i;
if ((ft_strlen(s) - start) < len)
len = ft_strlen(s) - start;
if (ft_strlen(s) < start)
return (ft_strdup(""));
i = 0;
sub = (char *) malloc(len + 1);
if (!sub)
return (NULL);
while (len > 0)
{
sub[i++] = s[start++];
len--;
}
sub[i] = '\0';
return (sub);
}