Libft/ft_substr.c at main · EnzoDeg42/Libft · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_substr.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: edegraev <edegraev@student.42.fr>          +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/11/08 21:53:45 by edegraev          #+#    #+#             */
/*   Updated: 2023/11/11 12:17:54 by edegraev         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

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

	if (!s)
		return (NULL);
	if ((unsigned int)ft_strlen(s) < start)
		return (ft_strdup(""));
	size = ft_strlen(s + start);
	if (size < len)
		len = size;
	str = (char *)malloc(sizeof(char) * (len + 1));
	if (!str)
		return (NULL);
	i = 0;
	while (i < len)
	{
		str[i] = s[start + i];
		i++;
	}
	str[i] = '\0';
	return (str);
}

// #include <stdio.h>
// int	main(void)
// {
// 	char *str = "test";
// 	char *out = ft_substr(str, 1, 2);
// 	printf("%s\n", out);
// 	free(out);
// 	out = ft_substr("tripouille", 1, 1);
// 	printf("%s\n", out);
// 	return (0);
// }