ft_strnstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: vsimeono <vsimeono@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/09/07 11:14:46 by vsimeono          #+#    #+#             */
/*   Updated: 2021/10/04 22:04:33 by vsimeono         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	nlen = ft_strlen(needle);
	if (!nlen)
		return ((char *)haystack);
	while (len && *haystack)
	{
		if (ft_strncmp(haystack, needle, nlen) == 0)
			return ((char *)haystack);
		if (len <= nlen)
			break ;
		len--;
		haystack++;
	}
	return (NULL);
}