Home » Date and Time » Date_Holidays » Bug #6350

[2005-12-27 13:53 UTC] anders dot x dot karlsson at tdcsong dot se

Description:
------------
Here's a Holiday driver for Swedish public holidays.

[2005-12-27 13:54 UTC] anders dot x dot karlsson at tdcsong dot se

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
//
+-----------------------------------------------------------
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// | PHP Version 4
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//
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// | Copyright (c) 1997-2002 The PHP Group
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//
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// | This source file is subject to version 2.0 of the PHP
license, |
// | that is bundled with this package in the file LICENSE,
and is |
// | available at through the world-wide-web at
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// | http://www.php.net/license/2_02.txt.
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+-----------------------------------------------------------
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// | Authors: Anders Karlsson
<anders.x.karlsson@tdcsong.se |
//
+-----------------------------------------------------------
-----------+
//
// $Id: Sweden.php,v 1.3 2005/10/18 16:24:29 luckec Exp $

/**
* class that calculates Swedish holidays
*
* @category Date
* @package Date_Holidays
* @subpackage Driver
* @version $Id: Sweden.php,v 1.3 2005/10/18 16:24:29
luckec Exp $
* @author Anders Karlsson
<anders.x.karlsson@tdcsong.se>
*/
class Date_Holidays_Driver_Sweden extends
Date_Holidays_Driver
{
/**
* Constructor
*
* Use the Date_Holidays::factory() method to construct
an object of a certain driver
*
* @access protected
*/
function Date_Holidays_Driver_Sweden()
{
}

/**
* Build the internal arrays that contain data about the
calculated holidays
*
* @access protected
* @return boolean true on success, otherwise a
PEAR_ErrorStack object
* @throws object PEAR_ErrorStack
*/
function _buildHolidays()
{
/**
* New Year's Day
*/
$this->_addHoliday('newYearsDay', $this->_year .
'-01-01', 'New Year\'s Day');

/**
* Epiphanias
*/
$this->_addHoliday('epiphany', $this->_year .
'-01-06', 'Epiphany');

/**
* Easter Sunday
*/
$easterDate =
&Date_Holidays_Driver_Sweden::_calcEaster($this->_year);
$this->_addHoliday('easter', $easterDate, 'Easter
Sunday');

/**
* Good Friday / Black Friday
*/
$goodFridayDate = &new Date($easterDate);
$goodFridayDate->subtractSpan(new Date_Span('2, 0,
0, 0'));
$this->_addHoliday('goodFriday', $goodFridayDate,
'Good Friday');

/**
* Easter Monday
*/
$this->_addHoliday('easterMonday', $easterDate-
>getNextDay(), 'Easter Monday');

/**
* May Day
*/
$this->_addHoliday('mayDay', $this->_year .
'-05-01', 'May Day');

/**
* Pentecost (determines Whit Monday, Ascension Day
and Feast of Corpus Christi)
*/
$pentecostDate = &new Date($easterDate);
$pentecostDate->addSpan(new Date_Span('49, 0, 0,
0'));
$this->_addHoliday('pentecost', $pentecostDate,
'pentecost');

/**
* Ascension Day
*/
$ascensionDayDate = &new Date($pentecostDate);
$ascensionDayDate->subtractSpan(new Date_Span('10,
0, 0, 0'));
$this->_addHoliday('ascensionDay',
$ascensionDayDate, 'Ascension Day');


/**
* Swedish National Day and the Swedish Flag's Day

*/
$this->_addHoliday('swedenNationalDay', $this->_year
. '-06-06', 'Swedish National Day and the Swedish Flag\'s
Day');

/**
* Midsummer
* Saturday past 20th, June
*/
$juneDate = &new Date($this->_year . '-06-20');
$dayOfWeek = $juneDate->getDayOfWeek();
$juneDate->addSpan(new Date_Span(sprintf('%d, 0, 0,
0', 6 - $dayOfWeek)));
$midSummerDate = &$juneDate;
$this->_addHoliday('midSummer', $midSummerDate,
'Midsummer Day');

/**
* All Saints' Day
*/
$saintspanDate = &new Date($this->_year .
'-10-31');
$dayOfWeek = $saintspanDate->getDayOfWeek
();
$saintspanDate->addSpan(new Date_Span(sprintf('%d,
0, 0, 0', 6 - $dayOfWeek)));
$allSaintsDate = &$saintspanDate;
$this->_addHoliday('allSaintsDay', $allSaintsDate,
'All Saints\' Day');




/**
* Christmas Eve
*/
$this->_addHoliday('xmasEve', $this->_year .
'-12-24', 'Christmas Eve');

/**
* Christmas day
*/
$this->_addHoliday('xmasDay', $this->_year .
'-12-25', 'Christmas Day');

/**
* Boxing day
*/
$this->_addHoliday('boxingDay', $this->_year .
'-12-26', 'Boxing Day');

/**
* New Year's Eve
*/
$this->_addHoliday('newYearsEve', $this->_year .
'-12-31', 'New Year\'s Eve');

if (Date_Holidays::errorsOccurred()) {
return Date_Holidays::getErrorStack();
}
return true;
}

/**
* calculates date for Easter
*
* @static
* @access private
* @param int $year year
* @return object Date
*/
function &_calcEaster($year)
{
// golden number
$golden = null;
$century = null;
// 23-Epact (modulo 30)
$epact = null;
// number of days from 21 March to the Paschal Full
Moon
$i = null;
// weekday of the Full Moon (0=Sunday,...)
$j = null;

if ($year > 1582) {
$golden = $year % 19;
$century = floor($year / 100);
$epact = ($century - floor($century / 4) -
floor((8 * $century + 13) / 25)+ 19 * $golden + 15) % 30;
$i = $epact - floor($epact / 28) * (1 -
floor($epact / 28) * floor(29 / ($epact + 1)) * floor((21 -
$golden) / 11));
$j = ($year + floor($year / 4) + $i + 2
- $century + floor($century / 4));
$j = $j % 7;
} else {
$golden = $year % 19;
$i = (19 * $golden + 15) % 30;
$j = ($year + floor($year / 4) + $i) % 7;
}
$l = $i - $j;
$month = 3 + floor(($l + 40) / 44);
$day = $l + 28 - 31 * floor($month / 4);

$date = &new Date(sprintf('%04d-%02d-%02d', $year,
$month, $day));
return $date;
}
}
?>