-
Notifications
You must be signed in to change notification settings - Fork 4
/
Copy pathft_strnstr.c
33 lines (30 loc) · 1.26 KB
/
ft_strnstr.c
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
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: ykoh <ykoh@student.42seoul.kr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/04/04 15:18:34 by ykoh #+# #+# */
/* Updated: 2020/05/06 16:41:07 by ykoh ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
const size_t needle_len = ft_strlen(needle);
if (*needle)
{
if (len == 0)
return (NULL);
while (len-- && ft_strncmp(haystack, needle, needle_len) != 0)
{
if (len < needle_len)
return (NULL);
if (*haystack == '\0')
return (NULL);
haystack++;
}
}
return ((char *)haystack);
}