ft_strnstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ahel-bah <ahel-bah@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/07 15:07:40 by ahel-bah          #+#    #+#             */
/*   Updated: 2021/11/15 10:32:50 by ahel-bah         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

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