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ft_strstr.c
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ft_strstr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: mzane <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2014/11/09 17:27:26 by mzane #+# #+# */
/* Updated: 2015/01/31 12:23:42 by mzane ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
#include <string.h>
char *ft_strstr(char *s1, const char *s2)
{
unsigned int i;
unsigned int s2len;
i = -1;
if (ft_strlen(s2) == 0)
return (s1);
else if (ft_strlen(s1) < ft_strlen(s2))
return (NULL);
s2len = ft_strlen(s2);
while (s1[++i + s2len - 1])
if (ft_memcmp(s1 + i, s2, s2len) == 0)
return (s1 + i);
return (NULL);
}