libft-42/ft_strtrim.c at master · andyst-dev/libft-42 · GitHub

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: astoll <astoll@student.42lausanne.ch>      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/10/31 13:11:48 by astoll            #+#    #+#             */
/*   Updated: 2023/10/31 13:22:47 by astoll           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strtrim(char const *s1, char const *set)
{
	size_t	len;

	if (!s1 || !set)
	{
		return (0);
	}
	while (*s1 && ft_strchr(set, *s1))
	{
		s1++;
	}
	len = ft_strlen(s1);
	while (len && ft_strchr(set, s1[len]))
	{
		len--;
	}
	return (ft_substr(s1, 0, len + 1));
}