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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/10/07 10:25:13 by cacharle #+# #+# */
/* Updated: 2019/10/12 13:51:56 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include <stdlib.h>
#include <string.h>
#include "libft.h"
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
size_t i;
size_t j;
size_t needle_len;
needle_len = ft_strlen(needle);
if (needle_len == 0 && len == 0)
return ((char*)haystack);
if (len == 0)
return (NULL);
if (needle_len == 0)
return ((char*)haystack);
i = -1;
while (++i < len && haystack[i])
{
j = 0;
while (i + j < len && needle[j] && haystack[i + j])
{
if (needle[j] != haystack[i + j])
break ;
j++;
}
if (j == needle_len)
return ((char*)haystack + i);
}
return (NULL);
}
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