ft_strnstr.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strnstr.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: tgrekov <tgrekov@student.hive.fi>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/10/25 12:42:03 by tgrekov           #+#    #+#             */
/*   Updated: 2023/11/09 20:05:15 by tgrekov          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "libft.h"
 
char    *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
    size_t  hix;
    size_t  nix;
 
    if (!needle[0])
        return ((char *) haystack);
    hix = 0;
    while (hix < len && haystack[hix])
    {
        nix = 0;
        while (hix + nix < len && needle[nix] && haystack[hix + nix]
            && needle[nix] == haystack[hix + nix])
            nix++;
        if (!needle[nix])
            return ((char *) haystack + hix);
        hix++;
    }
    return (0);
}