[Sommaire] [Imprimer]

   1  <?php
   2      /**************************************************************************\
   3      * eGroupWare - holidaycalc_US                                              *
   4      * http://www.egroupware.org                                                *
   5      * Based on Yoshihiro Kamimura <your@itheart.com>                           *
   6      *          http://www.itheart.com                                          *
   7      * --------------------------------------------                             *
   8      *  This program is free software; you can redistribute it and/or modify it *
   9      *  under the terms of the GNU General Public License as published by the   *
  10      *  Free Software Foundation; either version 2 of the License, or (at your  *
  11      *  option) any later version.                                              *
  12      \**************************************************************************/
  13  
  14      /* $Id: class.holidaycalc_US.inc.php 20295 2006-02-15 12:31:25Z  $ */
  15  
  16      /**
  17       * Calculations for calendar US and other holidays
  18       *
  19       * @package calendar
  20       * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
  21       */
  22      class holidaycalc
  23      {
  24  		function add($holiday,&$holidays,$year,$day_offset=0)
  25          {
  26              if ($day_offset)
  27              {
  28                  $holiday['name'] .= ' (Observed)';
  29              }
  30              $holiday['date'] = mktime(0,0,0,$holiday['month'],$holiday['day']+$day_offset,$year);
  31              foreach(array('day'=>'d','month'=>'m','occurence'=>'Y') as $key => $frmt)
  32              {
  33                  $holiday[$key] = date($frmt,$holiday['date']);
  34              }
  35              $holiday['obervance_rule'] = 0;
  36  
  37              $holidays[]= $holiday;
  38  
  39              //echo "<p>holidaycalc::add(,,$year,,$day_offset)=".print_r($holiday,True)."</p>";
  40          }
  41  
  42  		function calculate_date($holiday, &$holidays, $year)
  43          {
  44              //echo "<p>holidaycalc::calculate_date(".print_r($holiday,True).",,$year,)</p>";
  45  
  46              if($holiday['day'] == 0 && $holiday['occurence'] != 0)
  47              {
  48                  if($holiday['occurence'] != 99)
  49                  {
  50                      $dow = $GLOBALS['egw']->datetime->day_of_week($year,$holiday['month'],1);
  51                      $day = (((7 * $holiday['occurence']) - 6) + ((($holiday['dow'] + 7) - $dow) % 7));
  52                      $day += ($day < 1 ? 7 : 0);
  53  
  54                      // Sometimes the 5th occurance of a weekday (ie the 5th monday)
  55                      // can spill over to the next month.  This prevents that.
  56                      $ld = $GLOBALS['egw']->datetime->days_in_month($holiday['month'],$year);
  57                      if ($day > $ld)
  58                      {
  59                          return;
  60                      }
  61                  }
  62                  else
  63                  {
  64                      $ld = $GLOBALS['egw']->datetime->days_in_month($holiday['month'],$year);
  65                      $dow = $GLOBALS['egw']->datetime->day_of_week($year,$holiday['month'],$ld);
  66                      $day = $ld - (($dow + 7) - $holiday['dow']) % 7 ;
  67                  }
  68              }
  69              else
  70              {
  71                  $day = $holiday['day'];
  72                  if($holiday['observance_rule'] == True)
  73                  {
  74                      $dow = $GLOBALS['egw']->datetime->day_of_week($year,$holiday['month'],$day);
  75                      // This now calulates Observed holidays and creates a new entry for them.
  76  
  77                      // 0 = sundays are observed on monday (+1), 6 = saturdays are observed on fridays (-1)
  78                      if($dow == 0 || $dow == 6)
  79                      {
  80                          $this->add($holiday,$holidays,$year,$dow == 0 ? 1 : -1);
  81                      }
  82                      if ($holiday['month'] == 1 && $day == 1)
  83                      {
  84                          $dow = $GLOBALS['egw']->datetime->day_of_week($year+1,$holiday['month'],$day);
  85                          // checking if next year's newyear might be observed in this year
  86                          if ($dow == 6)
  87                          {
  88                              $this->add($holiday,$holidays,$year+1,-1);
  89                          }
  90                          // add the next years newyear, to show it in a week- or month-view
  91                          $this->add($holiday,$holidays,$year+1);
  92                      }
  93                      // checking if last year's new year's eve might be observed in this year
  94                      if ($holiday['month'] == 12 && $day == 31)
  95                      {
  96                          $dow = $GLOBALS['egw']->datetime->day_of_week($year-1,$holiday['month'],$day);
  97                          if ($dow == 0)
  98                          {
  99                              $this->add($holiday,$holidays,$year-1,1);
 100                          }
 101                          // add the last years new year's eve, to show it in a week- or month-view
 102                          $this->add($holiday,$holidays,$year-1);
 103                      }
 104                  }
 105              }
 106              $date = mktime(0,0,0,$holiday['month'],$day,$year);
 107  
 108              return $date;
 109          }
 110      }
 111  ?>