ft_strtrim.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: hykang <hykang@student.42seoul.kr>         +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/01/25 16:05:21 by hykang            #+#    #+#             */
/*   Updated: 2022/01/25 17:31:56 by hykang           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strtrim(char const *s1, char const *set)
{
	int		start;
	int		end;
	char	*res;

	start = 0;
	while (s1[start] && ft_strchr(set, s1[start]))
		start++;
	end = ft_strlen(s1);
	while (ft_strchr(set, s1[end - 1]) && end > start)
		end--;
	res = ft_substr(s1, start, (end - start));
	return (res);
}