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     {
  14         $limit = false;
  15         extract($params);
  16         if ($exclude_major_revisions)
  17             $include_minor_revisions = true;
  18
  19         $reverse = $limit < 0;
  20         if ($reverse) {
  21             $limit = -$limit;
  22         }
  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 (!$include_minor_revisions)
  35                         continue;
  36                 } else {
  37                     if ($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, $limit);
  57         }
  58     }
  59
  60     function next()
  61     {
  62         return array_shift($this->_revisions);
  63     }
  64
  65     function free()
  66     {
  67         unset($this->_revisions);
  68     }
  69 }
  70
  71 function WikiDB_backend_dumb_MostRecentIter_sortf($a, $b)
  72 {
  73     $acreated = $a['versiondata']['mtime'];
  74     $bcreated = $b['versiondata']['mtime'];
  75     return $bcreated - $acreated;
  76 }
  77
  78 function WikiDB_backend_dumb_MostRecentIter_sortf_rev($a, $b)
  79 {
  80     $acreated = $a['versiondata']['mtime'];
  81     $bcreated = $b['versiondata']['mtime'];
  82     return $acreated - $bcreated;
  83 }
  84
  85 // Local Variables:
  86 // mode: php
  87 // tab-width: 8
  88 // c-basic-offset: 4
  89 // c-hanging-comment-ender-p: nil
  90 // indent-tabs-mode: nil
  91 // End: