ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: yde-goes <yde-goes@student.42sp.org.br     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/06/11 14:38:47 by yde-goes          #+#    #+#             */
/*   Updated: 2022/06/28 15:22:07 by yde-goes         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	if (!s)
		return (NULL);
	s_len = ft_strlen(s);
	if (start >= s_len)
		return (ft_strdup(""));
	if (start + len > s_len)
		len = s_len - start;
	substr = malloc((len + 1) * sizeof(*substr));
	if (substr == NULL)
		return (NULL);
	ft_strlcpy(substr, s + start, len + 1);
	return (substr);
}