1/*-
2 * Copyright (c) 2005 Poul-Henning Kamp
3 * Copyright (c) 1990, 1993
4 *	The Regents of the University of California.  All rights reserved.
5 *
6 * This code is derived from software contributed to Berkeley by
7 * Chris Torek.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * $FreeBSD: src/lib/libc/stdio/xprintf_time.c,v 1.6 2011/03/06 19:47:46 pjd Exp $
34 */
35#include <namespace.h>
36#include <stdio.h>
37#include <wchar.h>
38#include <stdint.h>
39#include <assert.h>
40#include <sys/time.h>
41#include "printf.h"
42#include "xprintf_private.h"
43
44__private_extern__ int
45__printf_arginfo_time(const struct printf_info *pi, size_t n, int *argt)
46{
47
48	assert(n >= 1);
49	argt[0] = PA_POINTER;
50	return (1);
51}
52#define MINUTE 60
53#define HOUR	(60 * MINUTE)
54#define DAY	(24 * HOUR)
55#define YEAR	(365 * DAY)
56
57__private_extern__ int
58__printf_render_time(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
59{
60	char buf[100];
61	char *p;
62	struct timeval *tv;
63	struct timespec *ts;
64	time_t *tp;
65	intmax_t t, tx;
66	int i, prec, nsec, ret;
67
68	if (pi->is_long) {
69		tv = *((struct timeval **)arg[0]);
70		t = tv->tv_sec;
71		nsec = tv->tv_usec * 1000;
72		prec = 6;
73	} else if (pi->is_long_double) {
74		ts = *((struct timespec **)arg[0]);
75		t = ts->tv_sec;
76		nsec = ts->tv_nsec;
77		prec = 9;
78	} else {
79		tp = *((time_t **)arg[0]);
80		t = *tp;
81		nsec = 0;
82		prec = 0;
83	}
84	if (pi->is_long || pi->is_long_double) {
85		if (pi->prec >= 0)
86			prec = pi->prec;
87		if (prec == 0)
88			nsec = 0;
89	}
90
91	p = buf;
92	if (pi->alt) {
93		tx = t;
94		if (t >= YEAR) {
95			p += sprintf(p, "%jdy", t / YEAR);
96			t %= YEAR;
97		}
98		if (tx >= DAY && (t != 0 || prec != 0)) {
99			p += sprintf(p, "%jdd", t / DAY);
100			t %= DAY;
101		}
102		if (tx >= HOUR && (t != 0 || prec != 0)) {
103			p += sprintf(p, "%jdh", t / HOUR);
104			t %= HOUR;
105		}
106		if (tx >= MINUTE && (t != 0 || prec != 0)) {
107			p += sprintf(p, "%jdm", t / MINUTE);
108			t %= MINUTE;
109		}
110		if (t != 0 || tx == 0 || prec != 0)
111			p += sprintf(p, "%jds", t);
112	} else  {
113		p += sprintf(p, "%jd", (intmax_t)t);
114	}
115	if (prec != 0) {
116		for (i = prec; i < 9; i++)
117			nsec /= 10;
118		p += sprintf(p, ".%.*d", prec, nsec);
119	}
120	ret = __printf_out(io, pi, buf, p - buf);
121	__printf_flush(io);
122	return (ret);
123}
124