ft_strlcat.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strlcat.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ael-khni <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/04 09:30:02 by ael-khni          #+#    #+#             */
/*   Updated: 2021/11/09 13:23:52 by ael-khni         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static	size_t	ft_min(size_t x, size_t y)
{
	if (x < y)
		return (x);
	return (y);
}

size_t	ft_strlcat(char *dst, const char *src, size_t dstsize)
{
	size_t	dst_len;
	size_t	src_len;
	size_t	i;
	size_t	result;

	i = 0;
	dst_len = ft_strlen(dst);
	src_len = ft_strlen(src);
	result = src_len + ft_min(dst_len, dstsize);
	if (dstsize == 0)
		return (result);
	while (src[i] && dst_len + i < dstsize - 1)
	{
		dst[dst_len + i] = src[i];
		i++;
	}
	dst[dst_len + i] = '\0';
	return (result);
}