freebsd-dev/lib/libc/stdio/xprintf_time.c
Pawel Jakub Dawidek a9cf49ab39 Because we call __printf_out() with a on-stack buffer, also call
__printf_flush() so we are sure it won't be referenced after we return.

MFC after:	2 weeks
2011-03-06 19:47:46 +00:00

123 lines
3.4 KiB
C

/*-
* Copyright (c) 2005 Poul-Henning Kamp
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Chris Torek.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <namespace.h>
#include <stdio.h>
#include <wchar.h>
#include <stdint.h>
#include <assert.h>
#include <sys/time.h>
#include "printf.h"
int
__printf_arginfo_time(const struct printf_info *pi, size_t n, int *argt)
{
assert(n >= 1);
argt[0] = PA_POINTER;
return (1);
}
#define MINUTE 60
#define HOUR (60 * MINUTE)
#define DAY (24 * HOUR)
#define YEAR (365 * DAY)
int
__printf_render_time(struct __printf_io *io, const struct printf_info *pi, const void *const *arg)
{
char buf[100];
char *p;
struct timeval *tv;
struct timespec *ts;
time_t *tp;
intmax_t t, tx;
int i, prec, nsec, ret;
if (pi->is_long) {
tv = *((struct timeval **)arg[0]);
t = tv->tv_sec;
nsec = tv->tv_usec * 1000;
prec = 6;
} else if (pi->is_long_double) {
ts = *((struct timespec **)arg[0]);
t = ts->tv_sec;
nsec = ts->tv_nsec;
prec = 9;
} else {
tp = *((time_t **)arg[0]);
t = *tp;
nsec = 0;
prec = 0;
}
if (pi->is_long || pi->is_long_double) {
if (pi->prec >= 0)
prec = pi->prec;
if (prec == 0)
nsec = 0;
}
p = buf;
if (pi->alt) {
tx = t;
if (t >= YEAR) {
p += sprintf(p, "%jdy", t / YEAR);
t %= YEAR;
}
if (tx >= DAY && (t != 0 || prec != 0)) {
p += sprintf(p, "%jdd", t / DAY);
t %= DAY;
}
if (tx >= HOUR && (t != 0 || prec != 0)) {
p += sprintf(p, "%jdh", t / HOUR);
t %= HOUR;
}
if (tx >= MINUTE && (t != 0 || prec != 0)) {
p += sprintf(p, "%jdm", t / MINUTE);
t %= MINUTE;
}
if (t != 0 || tx == 0 || prec != 0)
p += sprintf(p, "%jds", t);
} else {
p += sprintf(p, "%jd", (intmax_t)t);
}
if (prec != 0) {
for (i = prec; i < 9; i++)
nsec /= 10;
p += sprintf(p, ".%.*d", prec, nsec);
}
ret = __printf_out(io, pi, buf, p - buf);
__printf_flush(io);
return (ret);
}