ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: juchoi <juchoi@student.42.fr>              +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/01/21 16:06:36 by juchoi            #+#    #+#             */
/*   Updated: 2021/02/08 23:09:15 by juchoi           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

char	*ft_substr(char const *s, unsigned int start, size_t len)
{
	char				*str;
	unsigned int		s_len;
	size_t				n_len;

	if (!s)
		return (0);
	s_len = ft_strlen(s);
	if (s_len < start)
		return (ft_strdup(""));
	n_len = ft_strlen(s + start);
	if (n_len < len)
		len = n_len;
	if (!(str = (char *)malloc(sizeof(char) * (len + 1))))
		return (0);
	ft_strlcpy(str, s + start, len + 1);
	return (str);
}