ft_strlcat.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strlcat.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rakama <rui20030415@gmail.com>             +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/05 18:03:01 by rakama            #+#    #+#             */
/*   Updated: 2022/05/12 11:31:49 by rakama           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

size_t	ft_strlcat(char	*dst, const char	*src, size_t	size)
{
	size_t	dstlen;
	size_t	srclen;

	dstlen = ft_strlen(dst);
	srclen = ft_strlen(src);
	if (dstlen >= size)
		return (size + srclen);
	if (srclen < size - dstlen)
	{
		ft_memcpy(dst + dstlen, src, srclen + 1);
	}
	else
	{
		ft_memcpy(dst + dstlen, src, size - dstlen - 1);
		dst[size - 1] = '\0';
	}
	return (dstlen + srclen);
}