lib/WikiDB/backend/dumb/MostRecentIter.php

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