xref: /third_party/mesa3d/src/util/strndup.h (revision bf215546)
1/*
2 * Copyright (c) 2015 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#ifndef STRNDUP_H
25#define STRNDUP_H
26
27#if defined(_WIN32)
28
29#include <stdlib.h> // size_t
30#include <string.h>
31
32#ifdef __cplusplus
33extern "C" {
34#endif
35
36static inline char *
37strndup(const char *str, size_t max)
38{
39   size_t n;
40   char *ptr;
41
42   if (!str)
43      return NULL;
44
45   n = strnlen(str, max);
46   ptr = (char *) calloc(n + 1, sizeof(char));
47   if (!ptr)
48      return NULL;
49
50   memcpy(ptr, str, n);
51   return ptr;
52}
53
54#ifdef __cplusplus
55}
56#endif
57
58#endif /* _WIN32 */
59
60#endif /* STRNDUP_H */
61