functions/prefs.php

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