lib/WikiDB/backend/dumb/WantedPagesIter.php

   1 <?php // -*-php-*-
   2 rcs_id('$Id: WantedPagesIter.php,v 1.1 2004-11-20 17:35:58 rurban Exp $');
   3
   4 //require_once('lib/WikiDB/backend.php');
   5
   6 /**
   7  * This iterator will work with any WikiDB_backend
   8  * which has a working get_links(,'links_from') method.
   9  *
  10  * This is mostly here for testing, 'cause it's slow,slow,slow.
  11  */
  12 class WikiDB_backend_dumb_WantedPagesIter
  13 extends WikiDB_backend_iterator
  14 {
  15     function WikiDB_backend_dumb_WantedPagesIter(&$backend, &$all_pages, $exclude='', $sortby=false, $limit=false) {
  16         $this->_allpages   = $all_pages;
  17         $this->_allpages_array   = $all_pages->asArray();
  18         $this->_backend = &$backend;
  19         if (!is_array($exclude))
  20             $this->exclude = $exclude ? PageList::explodePageList($exclude) : array();
  21         else
  22             $this->exclude = $exclude;
  23     }
  24
  25     function next() {
  26         while ($page = $this->_allpages->next()) {
  27             $pagename = $page['pagename'];
  28             $links = $this->_backend->get_links($pagename, false);
  29             while ($link = $links->next()) {
  30                 if ($this->exclude and in_array($link['pagename'], $this->exclude)) continue;
  31                 // better membership for a pageiterator???
  32                 if (! in_array($link['pagename'], $this->_allpages_array)) {
  33                     $links->free();
  34                     $link['wantedfrom'] = $pagename;
  35                     return $link;
  36                 }
  37             }
  38             $links->free();
  39         }
  40         return false;
  41     }
  42
  43     function free() {
  44         unset($this->_allpages_array);
  45         $this->_allpages->free();
  46     }
  47 }
  48
  49 // For emacs users
  50 // Local Variables:
  51 // mode: php
  52 // tab-width: 8
  53 // c-basic-offset: 4
  54 // c-hanging-comment-ender-p: nil
  55 // indent-tabs-mode: nil
  56 // End:
  57 ?>