lib/WikiDB/backend/dumb/MostRecentIter.php

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