1 /*
2 * Print time_t and nanoseconds in symbolic format.
3 *
4 * Copyright (c) 2015-2017 Dmitry V. Levin <ldv@altlinux.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include "tests.h"
31 #include <stdio.h>
32 #include <time.h>
33
34 static void
print_time_t_ex(const time_t t,const unsigned long long part_sec,const unsigned int max_part_sec,const int width,const int comment)35 print_time_t_ex(const time_t t, const unsigned long long part_sec,
36 const unsigned int max_part_sec, const int width,
37 const int comment)
38 {
39
40 if ((!t && !part_sec) || part_sec > max_part_sec)
41 return;
42
43 const struct tm *const p = localtime(&t);
44 char buf[256];
45 if (!p || !strftime(buf, sizeof(buf), "%FT%T", p))
46 return;
47
48 if (comment)
49 fputs(" /* ", stdout);
50
51 fputs(buf, stdout);
52
53 if (part_sec)
54 printf(".%0*llu", width, part_sec);
55
56 if (strftime(buf, sizeof(buf), "%z", p))
57 fputs(buf, stdout);
58
59 if (comment)
60 fputs(" */", stdout);
61 }
62
63 void
print_time_t_nsec(const time_t t,const unsigned long long nsec,int comment)64 print_time_t_nsec(const time_t t, const unsigned long long nsec, int comment)
65 {
66 print_time_t_ex(t, nsec, 999999999, 9, comment);
67 }
68
69 void
print_time_t_usec(const time_t t,const unsigned long long usec,int comment)70 print_time_t_usec(const time_t t, const unsigned long long usec, int comment)
71 {
72 print_time_t_ex(t, usec, 999999, 6, comment);
73 }
74