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