ft_strtrim.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ajakob <ajakob@student.42heilbronn.de>     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/11/20 22:19:06 by ajakob            #+#    #+#             */
/*   Updated: 2022/11/30 15:06:44 by ajakob           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strtrim(char const *s1, char const *set)
{
	char	*str;
	size_t	i;
	size_t	j;

	if (!set)
		return (NULL);
	if (!*s1)
		return (ft_strdup(""));
	i = 0;
	while (s1[i] && ft_strchr(set, s1[i]))
		i++;
	j = ft_strlen(s1) - 1;
	while (j && ft_strchr(set, s1[j]))
		j--;
	str = ft_substr(s1, i, j - i + 1);
	return (str);
}