ft_strnstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: msodor <msodor@student.42.fr>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/10/03 12:11:58 by msodor            #+#    #+#             */
/*   Updated: 2022/10/19 18:03:13 by msodor           ###   ########.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[0] == '\0')
		return ((char *)haystack);
	if (len == 0)
		return (NULL);
	while (haystack[i] && len > i)
	{
		j = 0;
		while (haystack[i + j] == needle[j] && needle[j] && (i + j) < len)
		{
			if (needle[j + 1] == '\0')
				return ((char *)&haystack[i]);
			j++;
		}
		i++;
	}
	return (0);
}