Libft/ft_strtrim.c at master · mtacnet/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
31
32
33
34
35
/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mtacnet <[email protected]>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2016/12/13 14:29:56 by mtacnet           #+#    #+#             */
/*   Updated: 2016/12/17 13:48:25 by mtacnet          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_strtrim(char const *s)
{
	unsigned int	i;
	unsigned int	j;
	unsigned int	len;

	if (!s)
		return (NULL);
	i = 0;
	j = ft_strlen(s) - 1;
	while ((s[i] == ' ' || s[i] == '\n' || s[i] == '\t') && s[i])
		i++;
	if (!(s[i]))
		return (ft_strsub(s, i, 0));
	while ((s[j] == ' ' || s[j] == '\n' || s[j] == '\t') && j > 0)
		j--;
	if (!i && j == (ft_strlen(s) - 1))
		return (ft_strdup(s));
	len = j - i;
	return (ft_strsub(s, i, len + 1));
}