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ft_strnstr.c
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ft_strnstr.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strnstr.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: luiroel <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/09 01:30:09 by luiroel #+# #+# */
/* Updated: 2020/02/26 21:17:43 by luiroel ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
char *ft_strnstr(const char *haystack, const char *needle, size_t len)
{
size_t pos;
size_t i;
pos = 0;
if (needle[0] == '\0')
return ((char *)haystack);
while (haystack[pos] != '\0' && pos < len)
{
if (haystack[pos] == needle[0])
{
i = 1;
while (needle[i] != '\0' && haystack[pos + i] == needle[i] &&
(pos + i) < len)
{
i++;
}
if (needle[i] == '\0')
{
return ((char *)&haystack[pos]);
}
}
pos++;
}
return (0);
}