ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: elraira- <elraira-@student.42sp.org.br>    +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/08/17 16:58:51 by elraira-          #+#    #+#             */
/*   Updated: 2021/08/19 11:01:41 by elraira-         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	if (!s)
		return (0);
	str_len = ft_strlen((char *)s);
	if (start > str_len)
		return (ft_strdup(""));
	if (str_len - start >= len)
		str = (char *)malloc((len + 1) * sizeof(char));
	else
		str = (char *)malloc((str_len - start + 1) * sizeof(char));
	if (!str)
		return (0);
	ft_strlcpy(str, (s + start), (len + 1));
	return (str);
}