lib/WikiDB/backend/dumb/MostRecentIter.php

   1 <?php // -*-php-*-
   2 // $Id$
   3
   4 require_once('lib/WikiDB/backend.php');
   5
   6
   7 /**
   8  * An inefficient but general most_recent iterator.
   9  *
  10  * This iterator will work with any backends.
  11  */
  12 class WikiDB_backend_dumb_MostRecentIter
  13 extends WikiDB_backend_iterator
  14 {
  15     function WikiDB_backend_dumb_MostRecentIter(&$backend, &$pages, $params) {
  16         $limit = false;
  17         extract($params);
  18         if ($exclude_major_revisions)
  19             $include_minor_revisions = true;
  20
  21         $reverse = $limit < 0;
  22         if($reverse){$limit = -$limit;}
  23         $this->_revisions = array();
  24         while ($page = $pages->next()) {
  25             $revs = $backend->get_all_revisions($page['pagename']);
  26             while ($revision = $revs->next()) {
  27                 $vdata = &$revision['versiondata'];
  28                 if (!$vdata) continue;
  29                 assert(is_array($vdata));
  30                 if (empty($vdata['mtime'])) {
  31                     $vdata['mtime'] = 0;
  32                 }
  33                 if (!empty($vdata['is_minor_edit'])) {
  34                     if (!$include_minor_revisions)
  35                         continue;
  36                 }
  37                 else {
  38                     if ($exclude_major_revisions)
  39                         continue;
  40                 }
  41                 if (!empty($since) && $vdata['mtime'] < $since)
  42                     break;
  43
  44                 $this->_revisions[] = $revision;
  45
  46                 if (!$include_all_revisions)
  47                     break;
  48             }
  49             $revs->free();
  50         }
  51         if ($reverse) {
  52             usort($this->_revisions, 'WikiDB_backend_dumb_MostRecentIter_sortf_rev');
  53         } else {
  54             usort($this->_revisions, 'WikiDB_backend_dumb_MostRecentIter_sortf');
  55         }
  56         if (!empty($limit) && $limit < count($this->_revisions)) {
  57             array_splice($this->_revisions, $limit);
  58         }
  59     }
  60
  61     function next() {
  62         return array_shift($this->_revisions);
  63     }
  64
  65     function free() {
  66         unset($this->_revisions);
  67     }
  68 }
  69
  70 function WikiDB_backend_dumb_MostRecentIter_sortf($a, $b) {
  71     $acreated = $a['versiondata']['mtime'];
  72     $bcreated = $b['versiondata']['mtime'];
  73     return $bcreated - $acreated;
  74 }
  75
  76 function WikiDB_backend_dumb_MostRecentIter_sortf_rev($a, $b) {
  77     $acreated = $a['versiondata']['mtime'];
  78     $bcreated = $b['versiondata']['mtime'];
  79     return $acreated - $bcreated;
  80 }
  81
  82 // Local Variables:
  83 // mode: php
  84 // tab-width: 8
  85 // c-basic-offset: 4
  86 // c-hanging-comment-ender-p: nil
  87 // indent-tabs-mode: nil
  88 // End:
  89 ?>