Source for file Sweden.php

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group                                |
// +----------------------------------------------------------------------+
// | 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                           |
// | http://www.php.net/license/2_02.txt.                                 |
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// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Authors:   Anders Karlsson <anders.x.karlsson@tdcsong.se>            |
// | Authors:   Carsten Lucke <luckec@php.net>                            |
// +----------------------------------------------------------------------+
//
//    $Id: Sweden.php,v 1.4 2006/04/02 22:19:06 luckec Exp $
 
require_once 'Date/Holidays/Driver/Christian.php';
 
/**
 * Driver class that calculates Swedish holidays
 *
 * @category    Date
 * @package     Date_Holidays
 * @subpackage  Driver
 * @version     $Id: Sweden.php,v 1.4 2006/04/02 22:19:06 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');
        
        /**
         * Midsummer Eve
         * Day before Midsummer.
         */
        $this->_addHoliday('midSummerEve', $midSummerDate->getPrevDay(), 'Midsummer Eve'); 
 
       /**
        * 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 the date for Easter. Actually this methods delegates the calculation to
    * the {@link Date_Holidays_Driver_Christian#calcEaster()} method.
    *
    * @static
    * @access   private
    * @param    int     $year   year
    * @return   object Date 
    */
    function calcEaster($year)
    {
        return Date_Holidays_Driver_Christian::calcEaster($year);
    }
    
   /**
    * Method that returns an array containing the ISO3166 codes that may possibly
    * identify a driver.
    * 
    * @static
    * @access public
    * @return array possible ISO3166 codes
    */
    function getISO3166Codes() {
        return array('se', 'swe');
    }
}
?>