functions/prefs.php

   1 <?php
   2    /**
   3     **  prefs.php
   4     **
   5     **  This contains functions for manipulating user preferences
   6     **
   7     **  $Id$
   8     **/
   9
  10    if (defined('prefs_php'))
  11       return;
  12    define('prefs_php', true);
  13
  14    global $prefs_are_cached, $prefs_cache;
  15    $prefs_are_cached = false;
  16    $prefs_cache = array();
  17
  18    function cachePrefValues($data_dir, $username)
  19    {
  20        global $prefs_are_cached, $prefs_cache;
  21
  22        if ($prefs_are_cached)
  23            return;
  24
  25        $filename = $data_dir . $username . '.pref';
  26
  27        if (!file_exists($filename)) {
  28            printf (_("Preference file, %s, does not exist. Log out, and log back in to create a default preference file."), $filename);
  29            exit;
  30        }
  31
  32        $file = fopen($filename, "r");
  33
  34        /** read in all the preferences **/
  35        $highlight_num = 0;
  36        while (! feof($file)) {
  37           $pref = trim(fgets($file, 1024));
  38           $equalsAt = strpos($pref, '=');
  39           if ($equalsAt > 0)
  40           {
  41               $Key = substr($pref, 0, $equalsAt);
  42               $Value = substr($pref, $equalsAt + 1);
  43               if (substr($Key, 0, 9) == 'highlight')
  44               {
  45                   $Key = 'highlight' . $highlight_num;
  46                   $highlight_num ++;
  47               }
  48
  49               if ($Value != '')
  50                   $prefs_cache[$Key] = $Value;
  51           }
  52        }
  53        fclose($file);
  54
  55        $prefs_are_cached = true;
  56    }
  57
  58
  59    /** returns the value for $string **/
  60    function getPref($data_dir, $username, $string) {
  61       global $prefs_cache;
  62
  63       cachePrefValues($data_dir, $username);
  64
  65       if (isset($prefs_cache[$string]))
  66           return $prefs_cache[$string];
  67       return '';
  68    }
  69
  70
  71    function savePrefValues($data_dir, $username)
  72    {
  73       global $prefs_cache;
  74
  75       $file = fopen($data_dir . $username . '.pref', "w");
  76       foreach ($prefs_cache as $Key => $Value)
  77       {
  78           if (isset($Value))
  79               fwrite($file, $Key . '=' . $Value . "\n");
  80       }
  81       fclose($file);
  82    }
  83
  84
  85    function removePref($data_dir, $username, $string) {
  86       global $prefs_cache;
  87
  88       cachePrefValues($data_dir, $username);
  89
  90       if (isset($prefs_cache[$string]))
  91           unset($prefs_cache[$string]);
  92
  93       savePrefValues($data_dir, $username);
  94    }
  95
  96    /** sets the pref, $string, to $set_to **/
  97    function setPref($data_dir, $username, $string, $set_to) {
  98       global $prefs_cache;
  99
 100       cachePrefValues($data_dir, $username);
 101
 102       $prefs_cache[$string] = $set_to;
 103
 104       savePrefValues($data_dir, $username);
 105    }
 106
 107
 108    /** This checks if there is a pref file, if there isn't, it will
 109        create it. **/
 110    function checkForPrefs($data_dir, $username) {
 111       $filename = "$data_dir$username.pref";
 112       if (!file_exists($filename)) {
 113          if (!copy("$data_dir" . "default_pref", $filename)) {
 114             echo _("Error opening ") ."$filename";
 115             exit;
 116          }
 117       }
 118    }
 119
 120
 121    /** Writes the Signature **/
 122    function setSig($data_dir, $username, $string) {
 123       $filename = "$data_dir$username.sig";
 124       $file = fopen($filename, "w");
 125       fwrite($file, $string);
 126       fclose($file);
 127    }
 128
 129
 130
 131    /** Gets the signature **/
 132    function getSig($data_dir, $username) {
 133       $filename = "$data_dir$username.sig";
 134       $sig = "";
 135       if (file_exists($filename)) {
 136          $file = fopen($filename, "r");
 137          while (!feof($file)) {
 138             $sig .= fgets($file, 1024);
 139          }
 140          fclose($file);
 141       }
 142       return $sig;
 143    }
 144 ?>