themes/Hawaiian/lib/random.php

   1 <?php
   2 class randomImage {
   3     /**
   4      * Usage:
   5      *
   6      * $imgSet = new randomImage($WikiTheme->file("images/pictures"));
   7      * $imgFile = "pictures/" . $imgSet->filename;
   8      */
   9     function randomImage ($dirname) {
  10
  11         $this->filename = ""; // Pick up your filename here.
  12
  13         $_imageSet  = new imageSet($dirname);
  14         $this->imageList = $_imageSet->getFiles();
  15         unset($_imageSet);
  16
  17         if (empty($this->imageList)) {
  18             trigger_error(sprintf(_("%s is empty."), $dirname),
  19                           E_USER_NOTICE);
  20         } else {
  21             $dummy = $this->pickRandom();
  22         }
  23     }
  24
  25     function pickRandom() {
  26         better_srand(); // Start with a good seed.
  27         $this->filename = $this->imageList[array_rand($this->imageList)];
  28         //trigger_error(sprintf(_("random image chosen: %s"),
  29         //                      $this->filename),
  30         //              E_USER_NOTICE); //debugging
  31         return $this->filename;
  32     }
  33 };
  34
  35 class imageSet extends fileSet {
  36     /**
  37      * A file is considered an image when the suffix matches one from
  38      * $InlineImages.
  39      */
  40     function _filenameSelector($filename) {
  41         return preg_match("/(" . INLINE_IMAGES . ")$/i", $filename);
  42     }
  43 };
  44
  45 // Local Variables:
  46 // mode: php
  47 // tab-width: 8
  48 // c-basic-offset: 4
  49 // c-hanging-comment-ender-p: nil
  50 // indent-tabs-mode: nil
  51 // End: