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// SPDX-FileCopyrightText: 2023-2024, Alejandro Colomar <alx@kernel.org>
// SPDX-License-Identifier: BSD-3-Clause
#ifndef SHADOW_INCLUDE_LIB_STRING_STRCPY_STRTCPY_H_
#define SHADOW_INCLUDE_LIB_STRING_STRCPY_STRTCPY_H_
#include "config.h"
#include <stdbool.h>
#include <stddef.h>
#include <string.h>
#include <sys/types.h>
#include "attr.h"
#include "sizeof.h"
// strtcpy_a - string truncate copy array
#define strtcpy_a(dst, src) strtcpy(dst, src, countof(dst))
ATTR_STRING(2)
inline ssize_t strtcpy(char *restrict dst, const char *restrict src,
size_t dsize);
// strtcpy - string truncate copy
inline ssize_t
strtcpy(char *restrict dst, const char *restrict src, size_t dsize)
{
bool trunc;
size_t dlen, slen;
if (dsize == 0)
return -1;
slen = strnlen(src, dsize);
trunc = (slen == dsize);
dlen = slen - trunc;
stpcpy(mempcpy(dst, src, dlen), "");
if (trunc)
return -1;
return slen;
}
#endif // include guard
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