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     {
  16         $this->_pages = $all_pages;
  17         $this->_backend = &$backend;
  18         $this->_target = $pagename;
  19     }
  20
  21     function next()
  22     {
  23         while ($page = $this->_pages->next()) {
  24             $pagename = $page['pagename'];
  25             $links = $this->_backend->get_links($pagename, false);
  26             while ($link = $links->next()) {
  27                 if ($link['pagename'] == $this->_target) {
  28                     $links->free();
  29                     return $page;
  30                 }
  31             }
  32         }
  33     }
  34
  35     function free()
  36     {
  37         $this->_pages->free();
  38     }
  39 }
  40
  41 // Local Variables:
  42 // mode: php
  43 // tab-width: 8
  44 // c-basic-offset: 4
  45 // c-hanging-comment-ender-p: nil
  46 // indent-tabs-mode: nil
  47 // End: