plugins/calendar/calendar_data.php

   1 <?php
   2 /*
   3  *  calendar_data.php
   4  *
   5  *  Copyright (c) 2001 Michal Szczotka <michal@tuxy.org>
   6  *  Licensed under the GNU GPL. For full terms see the file COPYING.
   7  *
   8  *  functions to operate on calendar data files.
   9  *
  10  * $Id$
  11  */
  12
  13 // this is array that contains all events
  14 // it is three dimensional array with fallowing structure
  15 // $calendardata[date][time] = array(length,priority,title,message);
  16 $calendardata = array();
  17
  18 //read events into array
  19 //data is | delimited, just like addresbook
  20 //files are structured like this:
  21 //date|time|length|priority|title|message);
  22 //files are divide by year for performance increase
  23 function readcalendardata() {
  24     global $calendardata, $username, $data_dir, $year;
  25
  26     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  27
  28     if (file_exists($filename)){
  29         $fp = fopen ($filename,'r');
  30
  31         if ($fp){
  32             while ($fdata = fgetcsv ($fp, 4096, '|')) {
  33                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
  34                                                             'priority' => $fdata[3],
  35                                                             'title' => $fdata[4],
  36                                                             'message' => $fdata[5],
  37                                                             'reminder' => $fdata[6] );
  38             }
  39             fclose ($fp);
  40         }
  41     }
  42 }
  43
  44 //makes events persistant
  45 function writecalendardata() {
  46     global $calendardata, $username, $data_dir, $year;
  47
  48     $filetmp = getHashedFile($username, $data_dir, "$username.$year.cal.tmp");
  49     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  50     $fp = fopen ($filetmp,"w");
  51     if ($fp) {
  52         while ( $calfoo = each ($calendardata)) {
  53             while ( $calbar = each ($calfoo['value'])) {
  54                 $calfoobar = $calendardata[$calfoo['key']][$calbar['key']];
  55                 $calstr = "$calfoo[key]|$calbar[key]|$calfoobar[length]|$calfoobar[priority]|$calfoobar[title]|$calfoobar[message]|$calfoobar[reminder]\n";
  56                 fwrite($fp, $calstr, 4096);
  57             }
  58
  59         }
  60         fclose ($fp);
  61         rename($filetmp,$filename);
  62     }
  63 }
  64
  65 //deletes event from file
  66 function delete_event($date, $time) {
  67     global $calendardata, $username, $data_dir, $year;
  68
  69     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  70     $fp = fopen ($filename,'r');
  71     if ($fp){
  72         while ($fdata = fgetcsv ($fp, 4096, "|")) {
  73             if (($fdata[0]==$date) && ($fdata[1]==$time)){
  74             // do nothing
  75             } else {
  76                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
  77                                                              'priority' => $fdata[3],
  78                                                              'title' => $fdata[4],
  79                                                              'message' => $fdata[5],
  80                                                              'reminder' => $fdata[6] );
  81             }
  82         }
  83         fclose ($fp);
  84     }
  85     writecalendardata();
  86
  87 }
  88
  89 // same as delete but not saves calendar
  90 // saving is done inside event_edit.php
  91 function update_event($date, $time) {
  92     global $calendardata, $username, $data_dir, $year;
  93
  94     $filename = getHashedFile($username, $data_dir, "$username.$year.cal");
  95     $fp = fopen ($filename,'r');
  96     if ($fp){
  97         while ($fdata = fgetcsv ($fp, 4096, '|')) {
  98             if (($fdata[0]==$date) && ($fdata[1]==$time)){
  99             // do nothing
 100             } else {
 101                 $calendardata[$fdata[0]][$fdata[1]] = array( 'length' => $fdata[2],
 102                                                              'priority' => $fdata[3],
 103                                                              'title' => $fdata[4],
 104                                                              'message' => $fdata[5],
 105                                                              'reminder' => $fdata[6] );
 106             }
 107         }
 108         fclose ($fp);
 109     }
 110 }
 111
 112
 113 ?>