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ft_strnstr.c
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ft_strnstr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dfonarev <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2019/02/23 01:51:07 by dfonarev #+# #+# */
/* Updated: 2019/05/02 23:47:47 by dfonarev ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strnstr(const char *hay, const char *needle, size_t len)
{
size_t i;
size_t j;
char *s1;
char *s2;
size_t n;
i = 0;
j = 0;
s1 = (char*)hay;
s2 = (char*)needle;
n = ft_strlen(s2);
if (s2[j] == 0)
return (&s1[i]);
while (s1[i] != 0 && n <= len--)
{
j = 0;
while (s2[j] == s1[i + j])
{
if (s2[j + 1] == '\0')
return (&s1[i]);
j++;
}
i++;
}
return (NULL);
}