/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: fgras-ca <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/02/11 14:31:40 by fgras-ca          #+#    #+#             */
/*   Updated: 2023/02/21 10:08:36 by fgras-ca         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strnstr(const char *haystack, const char *needle, size_t len)
{
	size_t	i;
	size_t	j;

	i = 0;
	if (needle == haystack)
		return ((char *)haystack);
	if (!len && !haystack)
		return (0);
	while (haystack[i] != '\0')
	{
		j = 0;
		while (haystack[i + j] == needle[j] && (i + j) < len)
		{
			if (haystack[i + j] == '\0' && needle[j] == '\0')
			{
				return ((char *)&haystack[j]);
			}
			j++;
		}
		if (needle[j] == '\0')
			return ((char *)(haystack + i));
		i++;
	}
	return (NULL);
}