/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: hulamy <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/11/19 17:26:06 by hulamy            #+#    #+#             */
/*   Updated: 2019/11/19 18:15:32 by hulamy           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

/*
** create a copy of s without the firsts and lasts empty characters
*/

/*	
**	#include <libc.h>
**	
**	char	*ft_strtrim(char const *s1, char const *set);
**	
**	int		main(int ac, char **av)
**	{
**		if (ac == 3)
**			printf("%s\n",ft_strtrim(av[1], av[2]));
**	
**		return (0);
**	}
*/	

#include "libft.h"

char	*ft_strtrim(char const *s1, char const *set)
{
	int		len;
	char	*str;
	(void)set;

	if (!s1)
		return (NULL);
	while (s1[0] && ft_strchr(set, s1[0]))
		s1++;
	len = ft_strlen(s1) - 1;
	while (len >= 0 && ft_strchr(set, s1[len]))
		len--;
	len++;
	if (!(str = ft_strsub(s1, 0, len)))
		return (NULL);
	return (str);
}