1 /* Test and measure stpncpy functions.
2 Copyright (C) 1999-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #define STRNCPY_RESULT(dst, len, n) ((dst) + ((len) > (n) ? (n) : (len)))
20 #define TEST_MAIN
21 #ifndef WIDE
22 # define TEST_NAME "stpncpy"
23 #else
24 # define TEST_NAME "wcpncpy"
25 #endif /* WIDE */
26 #include "test-string.h"
27 #ifndef WIDE
28 # define CHAR char
29 # define SIMPLE_STPNCPY simple_stpncpy
30 # define STUPID_STPNCPY stupid_stpncpy
31 # define STPNCPY stpncpy
32 # define STRNLEN strnlen
33 #else
34 # include <wchar.h>
35 # define CHAR wchar_t
36 # define SIMPLE_STPNCPY simple_wcpncpy
37 # define STUPID_STPNCPY stupid_wcpncpy
38 # define STPNCPY wcpncpy
39 # define STRNLEN wcsnlen
40 #endif /* WIDE */
41
42 CHAR *SIMPLE_STPNCPY (CHAR *, const CHAR *, size_t);
43 CHAR *STUPID_STPNCPY (CHAR *, const CHAR *, size_t);
44
45 IMPL (STUPID_STPNCPY, 0)
46 IMPL (SIMPLE_STPNCPY, 0)
47 IMPL (STPNCPY, 1)
48
49 CHAR *
SIMPLE_STPNCPY(CHAR * dst,const CHAR * src,size_t n)50 SIMPLE_STPNCPY (CHAR *dst, const CHAR *src, size_t n)
51 {
52 while (n--)
53 if ((*dst++ = *src++) == '\0')
54 {
55 size_t i;
56
57 for (i = 0; i < n; ++i)
58 dst[i] = '\0';
59 return dst - 1;
60 }
61 return dst;
62 }
63
64 CHAR *
STUPID_STPNCPY(CHAR * dst,const CHAR * src,size_t n)65 STUPID_STPNCPY (CHAR *dst, const CHAR *src, size_t n)
66 {
67 size_t nc = STRNLEN (src, n);
68 size_t i;
69
70 for (i = 0; i < nc; ++i)
71 dst[i] = src[i];
72 for (; i < n; ++i)
73 dst[i] = '\0';
74 return dst + nc;
75 }
76
77 #undef CHAR
78 #include "test-strncpy.c"
79