66 lines
1.8 KiB
C
66 lines
1.8 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_strlcat.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tosuman <timo42@proton.me> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/05/11 16:55:00 by tosuman #+# #+# */
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/* Updated: 2023/06/02 20:02:14 by tischmid ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <stddef.h>
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size_t ft_strlcat(char *dst, char const *src, size_t size)
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{
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size_t idx;
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size_t sidx;
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size_t slen;
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size_t dlen;
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slen = 0;
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while (src[slen])
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++slen;
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idx = 0;
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while (dst[idx])
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++idx;
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dlen = idx;
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if (dlen > size)
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return (slen + size);
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sidx = 0;
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size -= dlen;
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while (size-- > 1 && src[sidx])
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dst[idx++] = src[sidx++];
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dst[idx] = 0;
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return (dlen + slen);
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}
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/*
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Alternative implementation
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size_t ft_strlcat(char *dst, char const *src, size_t size)
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{
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size_t dst_len;
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size_t src_len;
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if ((!dst || !src) && size == 0)
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return (0);
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dst_len = 0;
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src_len = -1;
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while (*dst++)
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++dst_len;
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while (src[++src_len])
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;
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if (size <= dst_len)
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return (size + src_len);
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if (--dst && dst_len > size)
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return (size + dst_len);
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while (src_len-- && ++dst_len < size)
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*dst++ = *src++;
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if (dst_len-- == size)
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--dst_len;
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*dst = 0;
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return (dst_len + src_len);
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}
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*/
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