ft_ssl_md5/libs/libft/srcs/ft_strtrim.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bchanot <bchanot@students.42.fr>           +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2015/11/26 20:22:02 by bchanot           #+#    #+#             */
/*   Updated: 2018/10/29 11:52:57 by bchanot          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

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