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         }
  44     }
  45 }
  46
  47 //makes events persistant
  48 function writecalendardata() {
  49     global $calendardata, $username, $data_dir, $year;
  50
  51     $filetmp = getHashedFile($username, $data_dir, "$username.$year.cal.tmp");
  52     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  53     $fp = fopen ($filetmp,"w");
  54     if ($fp) {
  55         while ( $calfoo = each ($calendardata)) {
  56             while ( $calbar = each ($calfoo['value'])) {
  57                 $calfoobar = $calendardata[$calfoo['key']][$calbar['key']];
  58                 $calstr = "$calfoo[key]|$calbar[key]|$calfoobar[length]|$calfoobar[priority]|$calfoobar[title]|$calfoobar[message]|$calfoobar[reminder]\n";
  59                 fwrite($fp, $calstr, 4096);
  60             }
  61
  62         }
  63         fclose ($fp);
  64         @unlink($filename);
  65         rename($filetmp,$filename);
  66     }
  67 }
  68
  69 //deletes event from file
  70 function delete_event($date, $time) {
  71     global $calendardata, $username, $data_dir, $year;
  72
  73     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  74     $fp = fopen ($filename,'r');
  75     if ($fp){
  76         while ($fdata = fgetcsv ($fp, 4096, "|")) {
  77             if (($fdata[0]==$date) && ($fdata[1]==$time)){
  78             // do nothing
  79             } else {
  80                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
  81                                                              'priority' => $fdata[3],
  82                                                              'title' => $fdata[4],
  83                                                              'message' => $fdata[5],
  84                                                              'reminder' => $fdata[6] );
  85             }
  86         }
  87         fclose ($fp);
  88     }
  89     writecalendardata();
  90
  91 }
  92
  93 // same as delete but not saves calendar
  94 // saving is done inside event_edit.php
  95 function update_event($date, $time) {
  96     global $calendardata, $username, $data_dir, $year;
  97
  98     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  99     $fp = fopen ($filename,'r');
 100     if ($fp){
 101         while ($fdata = fgetcsv ($fp, 4096, '|')) {
 102             if (($fdata[0]==$date) && ($fdata[1]==$time)){
 103             // do nothing
 104             } else {
 105                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
 106                                                              'priority' => $fdata[3],
 107                                                              'title' => $fdata[4],
 108                                                              'message' => $fdata[5],
 109                                                              'reminder' => $fdata[6] );
 110             }
 111         }
 112         fclose ($fp);
 113     }
 114 }
 115
 116
 117 ?>