/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strjoin.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2018/11/14 21:17:12 by hulamy            #+#    #+#             */
/*   Updated: 2019/03/25 15:31:03 by hulamy           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

/*
** create a new string by concatenating the two strings s1 and s2
*/

#include "libft.h"

static char	*ft_doit(char const *s1, char const *s2, char *dest)
{
	int	j;
	int	i;

	j = 0;
	i = 0;
	while (s1[j] != '\0')
	{
		dest[i] = s1[j];
		i++;
		j++;
	}
	j = 0;
	while (s2[j] != '\0')
	{
		dest[i] = s2[j];
		i++;
		j++;
	}
	dest[i] = '\0';
	return (dest);
}

char		*ft_strjoin(char const *s1, char const *s2)
{
	char	*str;

	if (!s1 || !s2)
		return (NULL);
	if (!(str = (char *)malloc(sizeof(char) *
					(ft_strlen(s1) + ft_strlen(s2) + 1))))
		return (NULL);
	str = ft_doit(s1, s2, str);
	return (str);
}