root/lang/php/Date_Holidays_Driver_Japanese/src/Date/Holidays/Driver/Japanese.php @ 9322

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4: */
/**
 * Driver for holidays in Japanese
 *
 * PHP Version 4
 *
 * Copyright (c) 1997-2008 The PHP Group
 *
 * This source file is subject to version 3.0 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/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.
 *
 * @category Date
 * @package  Date_Holidays
 * @author   Hideyuki Shimooka <shimooka@doyouphp.jp>
 * @license  http://www.php.net/license/3_01.txt PHP License 3.0.1
 * @version  $Id$
 * @link     http://pear.php.net/package/Date_Holidays
 * @see      http://www.h3.dion.ne.jp/~sakatsu/holiday_topic.htm
 */

require_once 'Date/Holidays/Driver.php';

/**
 * class that calculates Japanese holidays
 *
 * @category   Date
 * @package    Date_Holidays
 * @subpackage Driver
 * @author     Hideyuki Shimooka <shimooka@doyouphp.jp>
 * @license    http://www.php.net/license/3_01.txt PHP License 3.0.1
 * @version    $Id$
 * @link       http://pear.php.net/package/Date_Holidays
 * @see        http://www.h3.dion.ne.jp/~sakatsu/holiday_topic.htm
 */
class Date_Holidays_Driver_Japanese 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_Japanese()
    {
    }

    /**
     * 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()
    {
        parent::_buildHolidays();

        $this->_buildNewYearsDay();
        $this->_buildComingofAgeDay();
        $this->_buildNationalFoundationDay();
        $this->_buildVernalEquinoxDay();
        $this->_buildShowaDay();
        $this->_buildConstitutionMemorialDay();
        $this->_buildGreeneryDay();
        $this->_buildChildrensDay();
        $this->_buildMarineDay();
        $this->_buildRespectfortheAgedDay();
        $this->_buildAutumnalEquinoxDay();
        $this->_buildHealthandSportsDay();
        $this->_buildNationalCultureDay();
        $this->_buildLaborThanksgivingDay();
        $this->_buildEmperorsBirthday();

        $this->_buildOtherMemorialDays();

        $this->_buildSubstituteHolidays();

        return true;
    }

    /**
     * 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('jp', 'jpn');
    }

    /**
     * build day of New Year's Day
     *
     * @access   private
     */
    function _buildNewYearsDay()
    {
        if ($this->_year >= 1949) {
            $this->_addHoliday('newYearsDay',
                               $this->_year . '-01-01',
                               'New Year\'s Day');
        }
    }

    /**
     * build day of Coming of Age Day
     *
     * @access   private
     */
    function _buildComingofAgeDay()
    {
        $date = null;
        if ($this->_year >= 2000) {
            $date = $this->_calcNthMondayInMonth(1, 2);
        } else if ($this->_year >= 1949) {
            $date = $this->_year . '-01-15';
        }
        if (!is_null($date)) {
            $this->_addHoliday('comingOfAgeDay',
                               $date,
                               'Coming of Age Day');
        }
    }

    /**
     * build day of National Foundation Day
     *
     * @access   private
     */
    function _buildNationalFoundationDay()
    {
        if ($this->_year >= 1949) {
            $this->_addHoliday('nationalFoundationDay',
                               $this->_year . '-02-11',
                               'National Foundation Day');
        }
    }

    /**
     * build day of Vernal Equinox Day
     *
     * @access   private
     */
    function _buildVernalEquinoxDay()
    {
        $day = null;
        if ($this->_year >= 1948 && $this->_year <= 1979) {
            $day = floor(20.8357 + 0.242194 * ($this->_year - 1980) - floor(($this->_year - 1980) / 4));
        } else if ($this->_year <= 2099) {
            $day = floor(20.8431 + 0.242194 * ($this->_year - 1980) - floor(($this->_year - 1980) / 4));
        } else if ($this->_year <= 2150) {
            $day = floor(21.8510 + 0.242194 * ($this->_year - 1980) - floor(($this->_year - 1980) / 4));
        }
        if (!is_null($day)) {
            $this->_addHoliday('Vernal Equinox Day',
                               sprintf('%04d-%02d-%02d', $this->_year, 3, $day),
                               'Vernal Equinox Day');
        }
    }

    /**
     * build day of Showa Day
     *
     * @access   private
     */
    function _buildShowaDay()
    {
        $name = null;
        if ($this->_year >= 2007) {
            $name = 'Showa Day';
        } else if ($this->_year >= 1989) {
            $name = 'Greenery Day';
        } else if ($this->_year >= 1949) {
            $name = 'Showa Emperor\'s Birthday';
        }
        if (!is_null($name)) {
            $this->_addHoliday('showaDay',
                               $this->_year . '-04-29',
                               $name);
        }
    }

    /**
     * build day of Constitution Memorial Day
     *
     * @access   private
     */
    function _buildConstitutionMemorialDay()
    {
        if ($this->_year >= 1949) {
            $this->_addHoliday('constitutionMemorialDay',
                               $this->_year . '-05-03',
                               'Constitution Memorial Day');
        }
    }

    /**
     * build day of Greenery Day
     *
     * @access   private
     */
    function _buildGreeneryDay()
    {
        $name = null;
        if ($this->_year >= 2007) {
            $name = 'Greenery Day';
        } else if ($this->_year >= 1986) {
            $date =& new Date($this->_year . '-05-04');
            if ($date->getDayOfWeek() != 0) {
                $name = 'National Holiday';
            }
        }
        if (!is_null($name)) {
            $this->_addHoliday('greeneryDay',
                               $this->_year . '-05-04',
                               $name);
        }
    }

    /**
     * build day of Children's Day
     *
     * @access   private
     */
    function _buildChildrensDay()
    {
        if ($this->_year >= 1949) {
            $this->_addHoliday('childrensDay',
                               $this->_year . '-05-05',
                               'Children\'s Day');
        }
    }

    /**
     * build day of Marine Day
     *
     * @access   private
     */
    function _buildMarineDay()
    {
        $date = null;
        if ($this->_year >= 2003) {
            $date = $this->_calcNthMondayInMonth(7, 3);
        } else if ($this->_year >= 1996) {
            $date = $this->_year . '-07-20';
        }
        if (!is_null($date)) {
            $this->_addHoliday('marineDay',
                               $date,
                               'Marine Day');
        }
    }

    /**
     * build day of Respect for the Aged Day
     *
     * @access   private
     */
    function _buildRespectfortheAgedDay()
    {
        $date = null;
        if ($this->_year >= 2003) {
            $date = $this->_calcNthMondayInMonth(9, 3);
        } else if ($this->_year >= 1966) {
            $date = $this->_year . '-09-15';
        }
        if (!is_null($date)) {
            $this->_addHoliday('respectfortheAgedDay',
                               $date,
                               'Respect for the Aged Day');
        }
    }

    /**
     * build day of Health and Sports Day
     *
     * @access   private
     */
    function _buildHealthandSportsDay()
    {
        $date = null;
        if ($this->_year >= 2000) {
            $date = $this->_calcNthMondayInMonth(10, 2);
        } else if ($this->_year >= 1966) {
            $date = $this->_year . '-10-10';
        }
        if (!is_null($date)) {
            $this->_addHoliday('healthandSportsDay',
                               $date,
                               'Health and Sports Day');
        }
    }

    /**
     * build day of Autumnal Equinox Day
     *
     * @access   private
     */
    function _buildAutumnalEquinoxDay()
    {
        $day = null;
        if ($this->_year >= 1948 && $this->_year <= 1979) {
            $day = floor(23.2588 + 0.242194 * ($this->_year - 1980) - floor(($this->_year - 1980) / 4));
        } else if ($this->_year <= 2099) {
            $day = floor(23.2488 + 0.242194 * ($this->_year - 1980) - floor(($this->_year - 1980) / 4));
        } else if ($this->_year <= 2150) {
            $day = floor(24.2488 + 0.242194 * ($this->_year - 1980) - floor(($this->_year - 1980) / 4));
        }
        if (!is_null($day)) {
            $this->_addHoliday('autumnalEquinoxDay',
                               sprintf('%04d-%02d-%02d', $this->_year, 9, $day),
                               'Autumnal Equinox Day');

            if ($this->_year >= 2003 &&
                $this->getHolidayDate('autumnalEquinoxDay')->getDayOfWeek() == 3) {
                $this->_addHoliday('nationalHolidayBeforeAutumnalEquinoxDay',
                                   $this->getHolidayDate('autumnalEquinoxDay')->getPrevDay(),
                                   'National Holiday before Autumnal Equinox Day');
            }
        }
    }

    /**
     * build day of National Culture Day
     *
     * @access   private
     */
    function _buildNationalCultureDay()
    {
        if ($this->_year >= 1948) {
            $this->_addHoliday('nationalCultureDay',
                               $this->_year . '-11-03',
                               'National Culture Day');
        }
    }

    /**
     * build day of Labor Thanksgiving Day
     *
     * @access   private
     */
    function _buildLaborThanksgivingDay()
    {
        if ($this->_year >= 1948) {
            $this->_addHoliday('laborThanksgivingDay',
                               $this->_year . '-11-23',
                               'Labor Thanksgiving Day');
        }
    }

    /**
     * build day of Emperor's Birthday
     *
     * @access   private
     */
    function _buildEmperorsBirthday()
    {
        if ($this->_year >= 1989) {
            $this->_addHoliday('emperorsBirthday',
                               $this->_year . '-12-23',
                               'Emperor\'s Birthday');
        }
    }

    /**
     * build day of Emperor's Birthday
     *
     * @access   private
     */
    function _buildOtherMemorialDays()
    {
        if ($this->_year == 1959) {
            $this->_addHoliday(
                'theRiteofWeddingofHIHCrownPrinceAkihito',
                $this->_year . '-04-10',
                'The Rite of Wedding of HIH Crown Prince Akihito');
        }
        if ($this->_year == 1989) {
            $this->_addHoliday(
                'theFuneralCeremonyofEmperorShowa.',
                $this->_year . '-02-24',
                'The Funeral Ceremony of Emperor Showa.');
        }
        if ($this->_year == 1990) {
            $this->_addHoliday(
                'theCeremonyoftheEnthronementofHisMajestytheEmperor(attheSeiden)',
                $this->_year . '-11-12',
                'The Ceremony of the Enthronement of His Majesty the Emperor (at the Seiden)');
        }
        if ($this->_year == 1993) {
            $this->_addHoliday(
                'theRiteofWeddingofHIHCrownPrinceNaruhito',
                $this->_year . '-06-09',
                'The Rite of Wedding of HIH Crown Prince Naruhito');
        }
    }

    /**
     * build day of substitute holiday
     *
     * @access   private
     */
    function _buildSubstituteHolidays()
    {
        foreach ($this->_dates as $name => $date) {
            if ($date->getDayOfWeek() == 0) {
                if ($this->_year >= 2007) {
                    while (in_array($date, $this->_dates)) {
                        $date = $date->getNextDay();
                    }
                } else if ($date->getDate() >= '1973-04-12') {
                    $date = $date->getNextDay();
                    if (in_array($date, $this->_dates)) {
                        continue;
                    }
                } else {
                    continue;
                }
                if (!is_null($date)) {
                    $this->_addHoliday(
                        'substituteHolidayFor' . str_replace(' ', '', $name),
                        $date,
                        'Substitute Holiday for ' . $name);
                }
            }
        }
    }

    /**
     * Calculate Nth monday in a month
     *
     * @param int $month    month
     * @param int $position position
     *
     * @access   private
     * @return   object Date date
     */
    function _calcNthMondayInMonth($month, $position)
    {
        if ($position  == 1) {
            $startday = '01';
        } elseif ($position == 2) {
            $startday = '08';
        } elseif ($position == 3) {
            $startday = '15';
        } elseif ($position == 4) {
            $startday = '22';
        } elseif ($position == 5) {
            $startday = '29';
        }
        $month = sprintf("%02d", $month);

        $date = new Date($this->_year . '-' . $month . '-' . $startday);
        while ($date->getDayOfWeek() != 1) {
            $date = $date->getNextDay();
        }
        return $date;
    }
}
?>