/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * 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.
 */
#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);
}