ft_strnstr.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: raphalme <raphalme@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2025/12/29 18:53:00 by raphalme          #+#    #+#             */
/*   Updated: 2026/04/14 10:45:22 by raphalme         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include <stdlib.h>
 
char    *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
    size_t  i;
    size_t  j;
 
    if (!*needle)
        return ((char *)haystack);
    i = 0;
    while (haystack[i] && i < len)
    {
        j = 0;
        while (haystack[i + j] && needle[j] && i + j < len
            && haystack[i + j] == needle[j])
            j++;
        if (!needle[j])
            return ((char *)&haystack[i]);
        i++;
    }
    return (NULL);
}