libft/ft_strtrim.c at master · lbiasuz/libft · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: lbiasuz <lbiasuz@student.42sp.org.br>      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/18 22:47:23 by lbiasuz           #+#    #+#             */
/*   Updated: 2022/04/23 09:42:33 by lbiasuz          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strtrim(char const *s1, char const *set)
{
	unsigned int	i;
	char			*trim;

	while (*s1 && ft_strchr(set, *s1))
		s1++;
	i = ft_strlen(s1);
	while (i && ft_strchr(set, s1[i - 1]))
		i--;
	trim = malloc(i + 1);
	if (!trim)
		return (NULL);
	ft_strlcpy(trim, s1, i + 1);
	return (trim);
}