ft_strtrim.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: hkonte <hkonte@student.42.fr>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/11/15 14:27:31 by hkonte            #+#    #+#             */
/*   Updated: 2024/11/15 14:46:50 by hkonte           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	if (!s1 || !set)
		return (NULL);
	start = 0;
	while (s1[start] && ft_strchr(set, s1[start]))
		start++;
	end = ft_strlen(s1);
	while (end > start && ft_strchr(set, s1[end - 1]))
		end--;
	len = end - start;
	result = malloc((len + 1) * sizeof(char));
	if (!result)
		return (NULL);
	ft_strlcpy(result, &s1[start], len + 1);
	return (result);
}