plugins/calendar/calendar_data.php

   1 <?php
   2
   3 /**
   4  * calendar_data.php
   5  *
   6  * Originally contrubuted by Michal Szczotka <michal@tuxy.org>
   7  *
   8  * functions to operate on calendar data files.
   9  *
  10  * @copyright &copy; 2002-2005 The SquirrelMail Project Team
  11  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
  12  * @version $Id$
  13  * @package plugins
  14  * @subpackage calendar
  15  */
  16
  17 /** this is array that contains all events
  18  *  it is three dimensional array with fallowing structure
  19  *  $calendardata[date][time] = array(length,priority,title,message); */
  20 $calendardata = array();
  21
  22 /**
  23  * read events into array
  24  *
  25  * data is | delimited, just like addressbook
  26  * files are structured like this:
  27  * date|time|length|priority|title|message
  28  * files are divided by year for performance increase */
  29 function readcalendardata() {
  30     global $calendardata, $username, $data_dir, $year;
  31
  32     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  33
  34     if (file_exists($filename)){
  35         $fp = fopen ($filename,'r');
  36
  37         if ($fp){
  38             while ($fdata = fgetcsv ($fp, 4096, '|')) {
  39                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
  40                                                             'priority' => $fdata[3],
  41                                                             'title' => htmlspecialchars($fdata[4],ENT_NOQUOTES),
  42                                                             'message' => htmlspecialchars($fdata[5],ENT_NOQUOTES),
  43                                                             'reminder' => $fdata[6] );
  44             }
  45             fclose ($fp);
  46             // this is to sort the events within a day on starttime
  47             $new_calendardata = array();
  48             foreach($calendardata as $day => $data) {
  49                 ksort($data, SORT_NUMERIC);
  50                 $new_calendardata[$day] = $data;
  51             }
  52             $calendardata = $new_calendardata;
  53         }
  54     }
  55 }
  56
  57 //makes events persistant
  58 function writecalendardata() {
  59     global $calendardata, $username, $data_dir, $year, $color;
  60
  61     $filetmp = getHashedFile($username, $data_dir, "$username.$year.cal.tmp");
  62     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  63     $fp = fopen ($filetmp,"w");
  64     if ($fp) {
  65         while ( $calfoo = each ($calendardata)) {
  66             while ( $calbar = each ($calfoo['value'])) {
  67                 $calfoobar = $calendardata[$calfoo['key']][$calbar['key']];
  68                 $calstr = "$calfoo[key]|$calbar[key]|$calfoobar[length]|$calfoobar[priority]|$calfoobar[title]|$calfoobar[message]|$calfoobar[reminder]\n";
  69                 if(sq_fwrite($fp, $calstr, 4096) === FALSE) {
  70                         error_box(_("Could not write calendar file %s", "$username.$year.cal.tmp"), $color);
  71                 }
  72             }
  73
  74         }
  75         fclose ($fp);
  76         @unlink($filename);
  77         rename($filetmp,$filename);
  78     }
  79 }
  80
  81 //deletes event from file
  82 function delete_event($date, $time) {
  83     global $calendardata, $username, $data_dir, $year;
  84
  85     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  86     $fp = fopen ($filename,'r');
  87     if ($fp){
  88         while ($fdata = fgetcsv ($fp, 4096, "|")) {
  89             if (($fdata[0]==$date) && ($fdata[1]==$time)){
  90             // do nothing
  91             } else {
  92                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
  93                                                              'priority' => $fdata[3],
  94                                                              'title' => $fdata[4],
  95                                                              'message' => $fdata[5],
  96                                                              'reminder' => $fdata[6] );
  97             }
  98         }
  99         fclose ($fp);
 100     }
 101     writecalendardata();
 102
 103 }
 104
 105 // same as delete but not saves calendar
 106 // saving is done inside event_edit.php
 107 function update_event($date, $time) {
 108     global $calendardata, $username, $data_dir, $year;
 109
 110     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
 111     $fp = fopen ($filename,'r');
 112     if ($fp){
 113         while ($fdata = fgetcsv ($fp, 4096, '|')) {
 114             if (($fdata[0]==$date) && ($fdata[1]==$time)){
 115             // do nothing
 116             } else {
 117                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
 118                                                              'priority' => $fdata[3],
 119                                                              'title' => $fdata[4],
 120                                                              'message' => $fdata[5],
 121                                                              'reminder' => $fdata[6] );
 122             }
 123         }
 124         fclose ($fp);
 125     }
 126 }
 127
 128
 129 ?>