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ft_strlcat.c
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ft_strlcat.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_strlcat.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: dalves-p <dalves-p@student.42sp.org.br> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/05/19 15:15:33 by dalves-p #+# #+# */
/* Updated: 2021/06/29 12:27:04 by dalves-p ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
/*
** LIBRARY: <strings.h>
** DESCRIPTION:
** The strlcat() function appends string src to the end of dst. It will
** append at most dstsize – strlen(dst) – 1 characters. It will then NUL-
** terminate, unless dstsize is 0 or the original dst string was longer than
** dstsize (in practice this should not happen as it means that either dstsize
** is incorrect or that dst is not a proper string).
** It returns the combined length of both src and dst strings (not counting
** their terminating null characters). This result is used to determine whether
** the final string was truncated.
*/
size_t ft_strlcat(char *dst, const char *src, size_t dstsize)
{
size_t i;
size_t sz_dst;
size_t sz_src;
i = 0;
sz_dst = ft_strlen(dst);
sz_src = ft_strlen(src);
if (dstsize == 0 || sz_dst > dstsize)
return (sz_src + dstsize);
else if (dstsize > sz_dst)
{
while (src[i] != '\0' && i < (dstsize - sz_dst - 1))
{
dst[sz_dst + i] = src[i];
i++;
}
dst[sz_dst + i] = '\0';
}
return (sz_src + sz_dst);
}