ft_memccpy_bonus.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_memccpy.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: aviholai <aviholai@student.hive.fi>        +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/01/26 14:52:00 by aviholai          #+#    #+#             */
/*   Updated: 2022/02/04 15:41:41 by aviholai         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

/*
**	'Memccpy()' (memory character copy) function copies 'n' amount of bytes from
**	memory area 'src' to memory area 'dst', or stops if it encounters a copy
**	of 'c' in the string and returns that location in the string 'dst'.
**	Otherwise, 'n' bytes are copied and a NULL pointer is returned. If 'dst'
**	and 'src' overlap, behavior is undefined.
*/

void	*ft_memccpy(void *dst, const void *src, int c, size_t n)
{
	size_t	i;
	char	*dst2;
	char	*src2;

	i = 0;
	dst2 = (char *)dst;
	src2 = (char *)src;
	while (i < n)
	{
		dst2[i] = src2[i];
		if ((unsigned char)src2[i] == (unsigned char)c)
			return ((char *)dst + i + 1);
		i++;
	}
	return (NULL);
}