ft_substr.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: ariahi <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/12 12:56:50 by ariahi            #+#    #+#             */
/*   Updated: 2021/11/27 18:22:59 by ariahi           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	if (!s)
		return (NULL);
	s_len = ft_strlen(s);
	if (start > s_len)
		start = s_len;
	if (start + len > s_len)
		len = s_len - start;
	sub = (char *)malloc(len + 1);
	if (!sub)
		return (NULL);
	ft_memmove(sub, s + start, len);
	sub[len] = '\0';
	return (sub);
}