MediaWiki  master
nukeNS.php
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1 <?php
36 require_once __DIR__ . '/Maintenance.php';
37 
44 class NukeNS extends Maintenance {
45  public function __construct() {
46  parent::__construct();
47  $this->addDescription( 'Remove pages with only 1 revision from any namespace' );
48  $this->addOption( 'delete', "Actually delete the page" );
49  $this->addOption( 'ns', 'Namespace to delete from, default NS_MEDIAWIKI', false, true );
50  $this->addOption( 'all', 'Delete everything regardless of revision count' );
51  }
52 
53  public function execute() {
54  $ns = $this->getOption( 'ns', NS_MEDIAWIKI );
55  $delete = $this->hasOption( 'delete' );
56  $all = $this->hasOption( 'all' );
57  $dbw = $this->getDB( DB_MASTER );
58  $this->beginTransaction( $dbw, __METHOD__ );
59 
60  $tbl_pag = $dbw->tableName( 'page' );
61  $tbl_rev = $dbw->tableName( 'revision' );
62  $res = $dbw->query( "SELECT page_title FROM $tbl_pag WHERE page_namespace = $ns" );
63 
64  $n_deleted = 0;
65 
66  foreach ( $res as $row ) {
67  // echo "$ns_name:".$row->page_title, "\n";
68  $title = Title::makeTitle( $ns, $row->page_title );
69  $id = $title->getArticleID();
70 
71  // Get corresponding revisions
72  $res2 = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
73  $revs = [];
74 
75  foreach ( $res2 as $row2 ) {
76  $revs[] = $row2->rev_id;
77  }
78  $count = count( $revs );
79 
80  // skip anything that looks modified (i.e. multiple revs)
81  if ( $all || $count == 1 ) {
82  # echo $title->getPrefixedText(), "\t", $count, "\n";
83  $this->output( "delete: " . $title->getPrefixedText() . "\n" );
84 
85  // as much as I hate to cut & paste this, it's a little different, and
86  // I already have the id & revs
87  if ( $delete ) {
88  $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
89  $this->commitTransaction( $dbw, __METHOD__ );
90  // Delete revisions as appropriate
92  $child = $this->runChild( NukePage::class, 'nukePage.php' );
93  '@phan-var NukePage $child';
94  $child->deleteRevisions( $revs );
95  $this->purgeRedundantText( true );
96  $n_deleted++;
97  }
98  } else {
99  $this->output( "skip: " . $title->getPrefixedText() . "\n" );
100  }
101  }
102  $this->commitTransaction( $dbw, __METHOD__ );
103 
104  if ( $n_deleted > 0 ) {
105  # update statistics - better to decrement existing count, or just count
106  # the page table?
107  $pages = $dbw->selectField( 'site_stats', 'ss_total_pages' );
108  $pages -= $n_deleted;
109  $dbw->update(
110  'site_stats',
111  [ 'ss_total_pages' => $pages ],
112  [ 'ss_row_id' => 1 ],
113  __METHOD__
114  );
115  }
116 
117  if ( !$delete ) {
118  $this->output( "To update the database, run the script with the --delete option.\n" );
119  }
120  }
121 }
122 
123 $maintClass = NukeNS::class;
124 require_once RUN_MAINTENANCE_IF_MAIN;
commitTransaction(IDatabase $dbw, $fname)
Commit the transcation on a DB handle and wait for replica DBs to catch up.
const RUN_MAINTENANCE_IF_MAIN
Definition: Maintenance.php:39
runChild( $maintClass, $classFile=null)
Run a child maintenance script.
getOption( $name, $default=null)
Get an option, or return the default.
Abstract maintenance class for quickly writing and churning out maintenance scripts with minimal effo...
Definition: Maintenance.php:86
hasOption( $name)
Checks to see if a particular option exists.
const DB_MASTER
Definition: defines.php:26
addDescription( $text)
Set the description text.
__construct()
Definition: nukeNS.php:45
output( $out, $channel=null)
Throw some output to the user.
Maintenance script that removes pages with only one revision from the MediaWiki namespace.
Definition: nukeNS.php:44
const NS_MEDIAWIKI
Definition: Defines.php:68
static makeTitle( $ns, $title, $fragment='', $interwiki='')
Create a new Title from a namespace index and a DB key.
Definition: Title.php:584
execute()
Definition: nukeNS.php:53
addOption( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
Add a parameter to the script.
$maintClass
Definition: nukeNS.php:123
purgeRedundantText( $delete=true)
Support function for cleaning up redundant text records.
getDB( $db, $groups=[], $dbDomain=false)
Returns a database to be used by current maintenance script.
beginTransaction(IDatabase $dbw, $fname)
Begin a transcation on a DB.