ft_strlcat.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strlcat.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jkahvedj <jkahvedj@student.42sp.org.br>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/05/30 23:17:51 by jkahvedj          #+#    #+#             */
/*   Updated: 2021/06/12 20:12:17 by jkahvedj         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

/*
** LIBRARY: string.h
**
** DESCRIPTION:
** size-bounded string concatenation
*/

#include "libft.h"

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

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