libft/ft_strlcat.c at main · usefJoseph/libft · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strlcat.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ychihab <ychihab@student.1337.ma>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/09/30 20:15:09 by ychihab           #+#    #+#             */
/*   Updated: 2022/10/24 08:18:46 by ychihab          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

size_t	ft_strlcat(char *dst, const char *src, size_t dstsize)
{
	unsigned int	i;
	unsigned int	len_src;
	unsigned int	len_dst;

	i = 0;
	len_src = ft_strlen(src);
	if (!dst && !dstsize)
		return (len_src);
	len_dst = ft_strlen(dst);
	if (len_dst >= dstsize)
		return (len_src + dstsize);
	while (dstsize && src[i] && i + len_dst < dstsize - 1)
	{
		dst[len_dst + i] = src[i];
		i++;
	}
	dst[len_dst + i] = '\0';
	return (len_dst + len_src);
}