cal_unix.c

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/*
   +----------------------------------------------------------------------+
   | Copyright (c) The PHP Group                                          |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | https://www.php.net/license/3_01.txt                                 |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Shane Caraveo             <shane@caraveo.com>               |
   |          Colin Viebrock            <colin@easydns.com>               |
   |          Hartmut Holzgraefe        <hholzgra@php.net>                |
   +----------------------------------------------------------------------+
 */
 
#include "php.h"
#include "php_calendar.h"
#include "sdncal.h"
#include <time.h>
 
#define SECS_PER_DAY (24 * 3600)
 
/* {{{ Convert UNIX timestamp to Julian Day */
PHP_FUNCTION(unixtojd)
{
    time_t ts;
    zend_long tl = 0;
    bool tl_is_null = 1;
    struct tm *ta, tmbuf;
 
    if (zend_parse_parameters(ZEND_NUM_ARGS(), "|l!", &tl, &tl_is_null) == FAILURE) {
        RETURN_THROWS();
    }
 
    if (tl_is_null) {
        ts = time(NULL);
    } else if (tl >= 0) {
        ts = (time_t) tl;
    } else {
        zend_argument_value_error(1, "must be greater than or equal to 0");
        RETURN_THROWS();
    }
 
    if (!(ta = php_localtime_r(&ts, &tmbuf))) {
        RETURN_FALSE;
    }
 
    RETURN_LONG(GregorianToSdn(ta->tm_year+1900, ta->tm_mon+1, ta->tm_mday));
}
/* }}} */
 
/* {{{ Convert Julian Day to UNIX timestamp */
PHP_FUNCTION(jdtounix)
{
    zend_long uday;
 
    if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &uday) == FAILURE) {
        RETURN_THROWS();
    }
    if (uday < 2440588 || (uday - 2440588) > (ZEND_LONG_MAX / SECS_PER_DAY)) { /* before beginning of unix epoch or greater than representable */
        zend_value_error("jday must be between 2440588 and " ZEND_LONG_FMT, ZEND_LONG_MAX / SECS_PER_DAY + 2440588);
        RETURN_THROWS();
    }
 
    uday -= 2440588 /* J.D. of 1.1.1970 */;
 
    RETURN_LONG(uday * SECS_PER_DAY);
}
/* }}} */