/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: grobledo <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/02/18 18:34:05 by grobledo          #+#    #+#             */
/*   Updated: 2023/02/18 18:34:08 by grobledo         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
#include "libft.h"

char	*ft_strtrim(const char *s1, const char *set)
{
	size_t	i;
	size_t	j;
	size_t	k;
	size_t	dlen;
	char	*dest;

	if (!s1)
		return (NULL);
	i = 0;
	j = ft_strlen(s1);
	k = -1;
	while (ft_strchr(set, s1[i]) != 0 && s1[i])
		i++;
	if (!s1[i])
		return (ft_strdup(""));
	while (ft_strchr(set, s1[j]) != 0 && j > 0)
		j--;
	dlen = (j - i);
	dest = ft_calloc ((dlen + 2), sizeof (char));
	if (dest == 0)
		return (NULL);
	while (++k <= dlen)
		dest[k] = s1[i + k];
	return (dest);
}