ft_strnstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: akharrou <akharrou@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/02/18 17:21:41 by akharrou          #+#    #+#             */
/*   Updated: 2019/03/04 13:17:20 by akharrou         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "../Includes/string_42.h"

char	*ft_strnstr(const char *haystack, const char *needle, size_t len)
{
	unsigned int needle_len;

	if (*needle == '\0')
		return ((char *)haystack);
	needle_len = ft_strlen(needle);
	while (*haystack && len-- >= needle_len)
	{
		if (*haystack == *needle)
			if (ft_strncmp(haystack, needle, needle_len) == 0)
				return ((char *)haystack);
		haystack++;
	}
	return (NULL);
}