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be49d61b19
When the PHP source code was versioned in Subversion, there was possible to substitute certain keywords such as $Id$ with revision number, last change time and author name. Such approach is not used in Git so this patch removes these outdated artifacts from source code files.
142 lines
4.3 KiB
C
142 lines
4.3 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 7 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2018 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Shane Caraveo <shane@caraveo.com> |
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| Colin Viebrock <colin@easydns.com> |
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| Hartmut Holzgraefe <hholzgra@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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#include "php_calendar.h"
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#include "sdncal.h"
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#include <time.h>
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static void _cal_easter(INTERNAL_FUNCTION_PARAMETERS, zend_long gm)
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{
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/* based on code by Simon Kershaw, <webmaster@ely.anglican.org> */
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struct tm te;
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zend_long year, golden, solar, lunar, pfm, dom, tmp, easter, result;
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zend_long method = CAL_EASTER_DEFAULT;
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/* Default to the current year if year parameter is not given */
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{
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time_t a;
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struct tm b, *res;
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time(&a);
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res = php_localtime_r(&a, &b);
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if (!res) {
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year = 1900;
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} else {
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year = 1900 + b.tm_year;
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}
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}
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if (zend_parse_parameters(ZEND_NUM_ARGS(),
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"|ll", &year, &method) == FAILURE) {
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return;
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}
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if (gm && (year<1970 || year>2037)) { /* out of range for timestamps */
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php_error_docref(NULL, E_WARNING, "This function is only valid for years between 1970 and 2037 inclusive");
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RETURN_FALSE;
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}
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golden = (year % 19) + 1; /* the Golden number */
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if ((year <= 1582 && method != CAL_EASTER_ALWAYS_GREGORIAN) ||
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(year >= 1583 && year <= 1752 && method != CAL_EASTER_ROMAN && method != CAL_EASTER_ALWAYS_GREGORIAN) ||
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method == CAL_EASTER_ALWAYS_JULIAN) { /* JULIAN CALENDAR */
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dom = (year + (year/4) + 5) % 7; /* the "Dominical number" - finding a Sunday */
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if (dom < 0) {
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dom += 7;
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}
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pfm = (3 - (11*golden) - 7) % 30; /* uncorrected date of the Paschal full moon */
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if (pfm < 0) {
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pfm += 30;
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}
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} else { /* GREGORIAN CALENDAR */
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dom = (year + (year/4) - (year/100) + (year/400)) % 7; /* the "Domincal number" */
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if (dom < 0) {
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dom += 7;
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}
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solar = (year-1600)/100 - (year-1600)/400; /* the solar and lunar corrections */
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lunar = (((year-1400) / 100) * 8) / 25;
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pfm = (3 - (11*golden) + solar - lunar) % 30; /* uncorrected date of the Paschal full moon */
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if (pfm < 0) {
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pfm += 30;
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}
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}
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if ((pfm == 29) || (pfm == 28 && golden > 11)) { /* corrected date of the Paschal full moon */
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pfm--; /* - days after 21st March */
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}
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tmp = (4-pfm-dom) % 7;
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if (tmp < 0) {
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tmp += 7;
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}
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easter = pfm + tmp + 1; /* Easter as the number of days after 21st March */
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if (gm) { /* return a timestamp */
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te.tm_isdst = -1;
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te.tm_year = year-1900;
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te.tm_sec = 0;
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te.tm_min = 0;
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te.tm_hour = 0;
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if (easter < 11) {
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te.tm_mon = 2; /* March */
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te.tm_mday = easter+21;
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} else {
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te.tm_mon = 3; /* April */
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te.tm_mday = easter-10;
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}
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result = mktime(&te);
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} else { /* return the days after March 21 */
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result = easter;
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}
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ZVAL_LONG(return_value, result);
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}
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/* {{{ proto int easter_date([int year])
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Return the timestamp of midnight on Easter of a given year (defaults to current year) */
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PHP_FUNCTION(easter_date)
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{
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_cal_easter(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
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}
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/* }}} */
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/* {{{ proto int easter_days([int year, [int method]])
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Return the number of days after March 21 that Easter falls on for a given year (defaults to current year) */
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PHP_FUNCTION(easter_days)
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{
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_cal_easter(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
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}
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/* }}} */
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* End:
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*/
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