ft_strtrim.c


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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_strtrim.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2019/10/07 10:24:16 by cacharle          #+#    #+#             */
/*   Updated: 2019/10/07 10:25:02 by cacharle         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stdlib.h>
#include "libft.h"

static int	is_space(char c)
{
	return (c == ' ' || c == '\n' || c == '\t');
}

char		*ft_strtrim(char const *s)
{
	size_t	start;
	size_t	len;
	char	*trimed;

	start = 0;
	while (s[start] && is_space(s[start]))
		start++;
	len = ft_strlen(&s[start]);
	if (len != 0)
		while (s[start + len - 1] && is_space(s[start + len - 1]))
			len--;
	if ((trimed = (char*)malloc(sizeof(char) * (len + 1))) == NULL)
		return (NULL);
	trimed = ft_strncpy(trimed, &s[start], len);
	trimed[len] = '\0';
	return (trimed);
}