/*
Libft Copyright (C) 2026 yctct

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

#include "libft.h"

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

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