plugins/calendar/calendar_data.php

   1 <?php
   2
   3 /**
   4  * calendar_data.php
   5  *
   6  * Copyright (c) 2002-2003 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * Originally contrubuted by Michal Szczotka <michal@tuxy.org>
  10  *
  11  * functions to operate on calendar data files.
  12  *
  13  * $Id$
  14  */
  15
  16 // this is array that contains all events
  17 // it is three dimensional array with fallowing structure
  18 // $calendardata[date][time] = array(length,priority,title,message);
  19 $calendardata = array();
  20
  21 //read events into array
  22 //data is | delimited, just like addresbook
  23 //files are structured like this:
  24 //date|time|length|priority|title|message);
  25 //files are divide by year for performance increase
  26 function readcalendardata() {
  27     global $calendardata, $username, $data_dir, $year;
  28
  29     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  30
  31     if (file_exists($filename)){
  32         $fp = fopen ($filename,'r');
  33
  34         if ($fp){
  35             while ($fdata = fgetcsv ($fp, 4096, '|')) {
  36                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
  37                                                             'priority' => $fdata[3],
  38                                                             'title' => htmlspecialchars($fdata[4],ENT_NOQUOTES),
  39                                                             'message' => htmlspecialchars($fdata[5],ENT_NOQUOTES),
  40                                                             'reminder' => $fdata[6] );
  41             }
  42             fclose ($fp);
  43             // this is to sort the events within a day on starttime
  44             foreach($calendardata as $day => $data) {
  45                 ksort($data, SORT_NUMERIC);
  46                 $calendardata[$day] = $data;
  47             }
  48         }
  49     }
  50 }
  51
  52 //makes events persistant
  53 function writecalendardata() {
  54     global $calendardata, $username, $data_dir, $year;
  55
  56     $filetmp = getHashedFile($username, $data_dir, "$username.$year.cal.tmp");
  57     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  58     $fp = fopen ($filetmp,"w");
  59     if ($fp) {
  60         while ( $calfoo = each ($calendardata)) {
  61             while ( $calbar = each ($calfoo['value'])) {
  62                 $calfoobar = $calendardata[$calfoo['key']][$calbar['key']];
  63                 $calstr = "$calfoo[key]|$calbar[key]|$calfoobar[length]|$calfoobar[priority]|$calfoobar[title]|$calfoobar[message]|$calfoobar[reminder]\n";
  64                 fwrite($fp, $calstr, 4096);
  65             }
  66
  67         }
  68         fclose ($fp);
  69         @unlink($filename);
  70         rename($filetmp,$filename);
  71     }
  72 }
  73
  74 //deletes event from file
  75 function delete_event($date, $time) {
  76     global $calendardata, $username, $data_dir, $year;
  77
  78     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  79     $fp = fopen ($filename,'r');
  80     if ($fp){
  81         while ($fdata = fgetcsv ($fp, 4096, "|")) {
  82             if (($fdata[0]==$date) && ($fdata[1]==$time)){
  83             // do nothing
  84             } else {
  85                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
  86                                                              'priority' => $fdata[3],
  87                                                              'title' => $fdata[4],
  88                                                              'message' => $fdata[5],
  89                                                              'reminder' => $fdata[6] );
  90             }
  91         }
  92         fclose ($fp);
  93     }
  94     writecalendardata();
  95
  96 }
  97
  98 // same as delete but not saves calendar
  99 // saving is done inside event_edit.php
 100 function update_event($date, $time) {
 101     global $calendardata, $username, $data_dir, $year;
 102
 103     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
 104     $fp = fopen ($filename,'r');
 105     if ($fp){
 106         while ($fdata = fgetcsv ($fp, 4096, '|')) {
 107             if (($fdata[0]==$date) && ($fdata[1]==$time)){
 108             // do nothing
 109             } else {
 110                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
 111                                                              'priority' => $fdata[3],
 112                                                              'title' => $fdata[4],
 113                                                              'message' => $fdata[5],
 114                                                              'reminder' => $fdata[6] );
 115             }
 116         }
 117         fclose ($fp);
 118     }
 119 }
 120
 121
 122 ?>