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-rw-r--r--gl/strncpy.c38
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1/* Copy a size-bounded string.
2 Copyright (C) 1999, 2011-2025 Free Software Foundation, Inc.
3
4 This file is free software: you can redistribute it and/or modify
5 it under the terms of the GNU Lesser General Public License as
6 published by the Free Software Foundation, either version 3 of the
7 License, or (at your option) any later version.
8
9 This file is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17/* Written by Bruno Haible <bruno@clisp.org>, 1999. */
18
19#include <config.h>
20
21/* Specification. */
22#include <string.h>
23
24char *
25strncpy (char *dest, const char *src, size_t n)
26{
27 char *destptr = dest;
28
29 for (; n > 0 && (*destptr = *src) != '\0'; src++, destptr++, n--)
30 ;
31
32 /* This behavior is rarely useful, but it is specified by the ISO C
33 standard. */
34 for (; n > 0; n--)
35 *destptr++ = '\0';
36
37 return dest;
38}