41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_strnstr.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: gbrochar <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2015/11/27 12:49:32 by gbrochar #+# #+# */
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/* Updated: 2015/11/28 16:39:13 by gbrochar ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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char *ft_strnstr(const char *s1, char *s2, size_t n)
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{
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size_t i;
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size_t i_mem;
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size_t i_tofind;
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i_mem = 0;
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if (s2[0] == '\0')
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return ((char *)s1);
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while (s1[i_mem] != '\0' && i_mem < n)
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{
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i_tofind = 0;
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while (s1[i_mem] != s2[i_tofind] && s1[i_mem] != '\0')
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i_mem++;
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if (s1[i_mem] == '\0')
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return (NULL);
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i = i_mem;
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while ((s1[i] == s2[i_tofind] || s2[i_tofind] == '\0') && i++ <= n)
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if (s2[i_tofind++] == '\0')
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return ((char *)&s1[i_mem]);
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if (i > n)
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return (NULL);
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i_mem++;
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}
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return (NULL);
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}
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