1  /* ************************************************************************** */
 2  /*                                                                            */
 3  /*                                                        :::      ::::::::   */
 4  /*   ft_strnstr.c                                       :+:      :+:    :+:   */
 5  /*                                                    +:+ +:+         +:+     */
 6  /*   By: gychoi <marvin@42.fr>                      +#+  +:+       +#+        */
 7  /*                                                +#+#+#+#+#+   +#+           */
 8  /*   Created: 2022/07/08 20:15:05 by gychoi            #+#    #+#             */
 9  /*   Updated: 2022/07/11 15:00:25 by gychoi           ###   ########.fr       */
10  /*                                                                            */
11  /* ************************************************************************** */
12  
13  #include "libft.h"
14  
15  char	*ft_strnstr(const char *haystack, const char *needle, size_t len)
16  {
17  	size_t	i;
18  	size_t	j;
19  
20  	if (needle[0] == '\0')
21  		return ((char *)haystack);
22  	i = 0;
23  	while (haystack[i] != '\0' && i < len)
24  	{
25  		j = 0;
26  		while (haystack[i + j] == needle[j] && i + j < len)
27  		{
28  			j++;
29  			if (needle[j] == '\0')
30  				return ((char *)haystack + i);
31  		}
32  		i++;
33  	}
34  	return (NULL);
35  }