lib/WikiDB/backend/dumb/BackLinkIter.php

   1 <?php
   2
   3 require_once 'lib/WikiDB/backend.php';
   4
   5 /**
   6  * This backlink iterator will work with any WikiDB_backend
   7  * which has a working get_links(,'links_from') method.
   8  *
   9  * This is mostly here for testing, 'cause it's slow,slow,slow.
  10  */
  11 class WikiDB_backend_dumb_BackLinkIter
  12 extends WikiDB_backend_iterator
  13 {
  14     function WikiDB_backend_dumb_BackLinkIter(&$backend, &$all_pages, $pagename) {
  15         $this->_pages = $all_pages;
  16         $this->_backend = &$backend;
  17         $this->_target = $pagename;
  18     }
  19
  20     function next() {
  21         while ($page = $this->_pages->next()) {
  22             $pagename = $page['pagename'];
  23             $links = $this->_backend->get_links($pagename, false);
  24             while ($link = $links->next()) {
  25                 if ($link['pagename'] == $this->_target) {
  26                     $links->free();
  27                     return $page;
  28                 }
  29             }
  30         }
  31     }
  32
  33     function free() {
  34         $this->_pages->free();
  35     }
  36 }
  37
  38 // Local Variables:
  39 // mode: php
  40 // tab-width: 8
  41 // c-basic-offset: 4
  42 // c-hanging-comment-ender-p: nil
  43 // indent-tabs-mode: nil
  44 // End: