ft_strnstr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rvan-der <rvan-der@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2015/10/21 15:24:11 by rvan-der          #+#    #+#             */
/*   Updated: 2016/03/03 19:04:00 by rvan-der         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strnstr(const char *big, const char *little, size_t len)
{
	size_t	i;
	size_t	j;

	i = 0;
	while (big[i] != '\0' && i < len)
	{
		if (big[i] == little[0])
		{
			j = 1;
			while (little[j] != '\0' && big[i + j] != '\0' &&\
					little[j] == big[i + j] && i + j < len)
				j++;
			if (little[j] == '\0')
				return ((char*)(big + i));
		}
		i++;
	}
	return (little[0] == '\0' ? (char*)big : NULL);
}