1 /* Test of vasnprintf() and asnprintf() functions.
2 Copyright (C) 2007-2018 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program 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 General Public License for more details.
13
14 You should have received a copy of the GNU 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>, 2007. */
18
19 #include <config.h>
20
21 #include "vasnprintf.h"
22
23 #include <stdarg.h>
24 #include <stdlib.h>
25 #include <string.h>
26
27 #include "macros.h"
28
29 static void
test_function(char * (* my_asnprintf)(char *,size_t *,const char *,...))30 test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
31 {
32 char buf[8];
33 int size;
34
35 for (size = 0; size <= 8; size++)
36 {
37 size_t length = size;
38 char *result = my_asnprintf (NULL, &length, "%d", 12345);
39 ASSERT (result != NULL);
40 ASSERT (strcmp (result, "12345") == 0);
41 ASSERT (length == 5);
42 free (result);
43 }
44
45 for (size = 0; size <= 8; size++)
46 {
47 size_t length;
48 char *result;
49
50 memcpy (buf, "DEADBEEF", 8);
51 length = size;
52 result = my_asnprintf (buf, &length, "%d", 12345);
53 ASSERT (result != NULL);
54 ASSERT (strcmp (result, "12345") == 0);
55 ASSERT (length == 5);
56 if (size < 6)
57 ASSERT (result != buf);
58 ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
59 if (result != buf)
60 free (result);
61 }
62 }
63
64 static char *
my_asnprintf(char * resultbuf,size_t * lengthp,const char * format,...)65 my_asnprintf (char *resultbuf, size_t *lengthp, const char *format, ...)
66 {
67 va_list args;
68 char *ret;
69
70 va_start (args, format);
71 ret = vasnprintf (resultbuf, lengthp, format, args);
72 va_end (args);
73 return ret;
74 }
75
76 static void
test_vasnprintf()77 test_vasnprintf ()
78 {
79 test_function (my_asnprintf);
80 }
81
82 static void
test_asnprintf()83 test_asnprintf ()
84 {
85 test_function (asnprintf);
86 }
87
88 int
main(int argc,char * argv[])89 main (int argc, char *argv[])
90 {
91 test_vasnprintf ();
92 test_asnprintf ();
93 return 0;
94 }
95