ft_strtrim.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: yaajagro <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/10/22 17:44:28 by yaajagro          #+#    #+#             */
/*   Updated: 2024/11/05 21:18:33 by yaajagro         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static int	ft_spliter(char c, const char *str)
{
	int	i;

	i = 0;
	while (str[i])
	{
		if (c == str[i])
			return (1);
		i++;
	}
	return (0);
}

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

	if ((!s1 && !set) || !s1)
		return (NULL);
	if (s1 && !set)
		return (ft_strdup(s1));
	start = 0;
	index = 0;
	len = ft_strlen(s1);
	while (s1[start] && ft_spliter(s1[start], set))
		start++;
	while (len > start && ft_spliter(s1[len - 1], set))
		len--;
	trimed = malloc(len - start + 1);
	if (!trimed)
		return (NULL);
	while (start < len)
		trimed[index++] = s1[start++];
	trimed[index] = '\0';
	return (trimed);
}