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egroupware_official/calendar/inc/class.holidaycalc_JP.inc.php

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<?php
/**************************************************************************\
* eGroupWare - holidaycalc_JP *
* http://www.egroupware.org *
* Based on Yoshihiro Kamimura <your@itheart.com> *
* http://www.itheart.com *
* -------------------------------------------- *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the *
* Free Software Foundation; either version 2 of the License, or (at your *
* option) any later version. *
\**************************************************************************/
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/* $Id$ */
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/**
* Calculations for calendar JP holidays
*
* @package calendar
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
*/
class holidaycalc
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{
function calculate_date($holiday, &$holidays, $year)
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{
static $cached_month;
static $cached_day;
static $cached_observance_rule;
if ($holiday['day'] == 0 && $holiday['dow'] != 0 && $holiday['occurence'] != 0)
{
$dow = $GLOBALS['egw']->datetime->day_of_week($year, $holiday['month'], 1);
$dayshift = (($holiday['dow'] + 7) - $dow) % 7;
$day = ($holiday['occurence'] - 1) * 7 + $dayshift + 1;
// Happy monday law.
if ($holiday['month'] == 1)
{
if ($year < 2000)
{
$day = 15;
}
}
elseif ($holiday['month'] == 7)
{
if ($year < 2003)
{
$day = 20;
}
}
elseif ($holiday['month'] == 9)
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{
if ($year < 2003)
{
$day = 15;
}
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}
elseif ($holiday['month'] == 10)
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{
if ($year < 2000)
{
$day = 10;
}
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}
}
elseif ($holiday['day'] == 0 && $holiday['dow'] == 0 && $holiday['occurence'] == 0)
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{
// For the next generation.
// over 2151, please set $factor...
if ($holiday['month'] == 3)
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{
// for Vernal Equinox
if ($year >= 1980 && $year <= 2099)
{
$factor = 20.8431;
}
elseif ($year >= 2100 && $year <= 2150)
{
$factor = 21.851;
}
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}
elseif ($holiday['month'] == 9)
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{
// for Autumnal Equinox
if ($year >= 1980 && $year <= 2099)
{
$factor = 23.2488;
}
elseif ($year >= 2100 && $year <= 2150)
{
$factor = 24.2488;
}
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}
$day = (int)($factor + 0.242194 * ($year - 1980)
- (int)(($year - 1980) / 4));
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}
else
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{
// normal holiday
$day = $holiday['day'];
}
if ($year >= 1985 && $holiday['month'] == $cached_month && $day == $cached_day + 2 && $cached_observance_rule == True && $holiday['observance_rule'] == True)
{
$pdow = $GLOBALS['egw']->datetime->day_of_week($year,$holiday['month'],$day-1);
if ($pdow != 0)
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{
$addcnt = count($holidays) + 1;
$holidays[$addcnt]['locale'] = $holiday['locale'];
if ($pdow == 1)
{
$holidays[$addcnt]['name'] = lang('overlap holiday');
}
else
{
$holidays[$addcnt]['name'] = lang('people holiday');
}
$holidays[$addcnt]['day'] = $day - 1;
$holidays[$addcnt]['month'] = $holiday['month'];
$holidays[$addcnt]['occurence'] = 0;
$holidays[$addcnt]['dow'] = 0;
$holidays[$addcnt]['date'] = mktime(0,0,0,$holiday['month'],$day-1,$year);
$holidays[$addcnt]['observance_rule'] = 0;
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}
}
$cached_month = $holiday['month'];
$cached_day = $day;
$cached_observance_rule = $holiday['observance_rule'];
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if ($year >= 1985 && $holiday['month'] == 5 && $day == 3)
{
;
}
elseif ($holiday['observance_rule'] == True)
{
$dow = $GLOBALS['egw']->datetime->day_of_week($year,$holiday['month'],$day);
// This now calulates Observed holidays and creates a new entry for them.
if($dow == 0)
{
$addcnt = count($holidays) + 1;
$holidays[$addcnt]['locale'] = $holiday['locale'];
$holidays[$addcnt]['name'] = lang('overlap holiday');
$holidays[$addcnt]['day'] = $day + 1;
$holidays[$addcnt]['month'] = $holiday['month'];
$holidays[$addcnt]['occurence'] = $holiday['occurence'];
$holidays[$addcnt]['dow'] = $holiday['dow'];
$holidays[$addcnt]['date'] = mktime(0,0,0,$holiday['month'],$day+1,$year);
$holidays[$addcnt]['observance_rule'] = 0;
}
}
$date = mktime(0,0,0,$holiday['month'],$day,$year);
return $date;
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}
}
?>