libft/ft_strnstr.c
2019-03-16 17:50:27 +01:00

36 lines
1.3 KiB
C

/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: tmaze <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2018/04/05 11:35:03 by tmaze #+# #+# */
/* Updated: 2019/03/16 15:52:25 by tmaze ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
int i;
int j;
char *tmp;
i = -1;
tmp = (char*)haystack;
if (ft_strequ(needle, ""))
return (tmp);
while ((++i == 0 || tmp[i - 1]) && i < (int)len)
if (tmp[i] == needle[0] && (j = 1))
{
while (tmp[i + j] == needle[j] && needle[j] && tmp[i + j]
&& (i + j) < (int)len)
j++;
if (needle[j] == '\0')
return (&tmp[i]);
}
return (NULL);
}