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<?php
/**
* Take page text out of an XML dump file and perform some operation on it.
* Used as a base class for CompareParsers and PreprocessDump.
* We implement below the simple task of searching inside a dump.
*
* Copyright © 2011 Platonides
* https://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Base class for interating over a dump.
*
* @ingroup Maintenance
*/
abstract class DumpIterator extends Maintenance {
private $count = 0;
private $startTime;
public function __construct() {
parent::__construct();
$this->mDescription = "Does something with a dump";
$this->addOption( 'file', 'File with text to run.', false, true );
$this->addOption( 'dump', 'XML dump to execute all revisions.', false, true );
$this->addOption( 'from', 'Article from XML dump to start from.', false, true );
}
public function execute() {
if ( !( $this->hasOption( 'file' ) ^ $this->hasOption( 'dump' ) ) ) {
$this->error( "You must provide a file or dump", true );
}
$this->checkOptions();
if ( $this->hasOption( 'file' ) ) {
$revision = new WikiRevision;
$revision->setText( file_get_contents( $this->getOption( 'file' ) ) );
$revision->setTitle( Title::newFromText(
rawurldecode( basename( $this->getOption( 'file' ), '.txt' ) )
) );
$this->handleRevision( $revision );
return;
}
$this->startTime = microtime( true );
if ( $this->getOption( 'dump' ) == '-' ) {
$source = new ImportStreamSource( $this->getStdin() );
} else {
$this->error( "Sorry, I don't support dump filenames yet. "
. "Use - and provide it on stdin on the meantime.", true );
}
$importer = new WikiImporter( $source );
$importer->setRevisionCallback(
array( &$this, 'handleRevision' ) );
$this->from = $this->getOption( 'from', null );
$this->count = 0;
$importer->doImport();
$this->conclusions();
$delta = microtime( true ) - $this->startTime;
$this->error( "Done {$this->count} revisions in " . round( $delta, 2 ) . " seconds " );
if ( $delta > 0 ) {
$this->error( round( $this->count / $delta, 2 ) . " pages/sec" );
}
# Perform the memory_get_peak_usage() when all the other data has been
# output so there's no damage if it dies. It is only available since
# 5.2.0 (since 5.2.1 if you haven't compiled with --enable-memory-limit)
$this->error( "Memory peak usage of " . memory_get_peak_usage() . " bytes\n" );
}
public function finalSetup() {
parent::finalSetup();
if ( $this->getDbType() == Maintenance::DB_NONE ) {
global $wgUseDatabaseMessages, $wgLocalisationCacheConf, $wgHooks;
$wgUseDatabaseMessages = false;
$wgLocalisationCacheConf['storeClass'] = 'LCStoreNull';
$wgHooks['InterwikiLoadPrefix'][] = 'DumpIterator::disableInterwikis';
}
}
static function disableInterwikis( $prefix, &$data ) {
# Title::newFromText will check on each namespaced article if it's an interwiki.
# We always answer that it is not.
return false;
}
/**
* Callback function for each revision, child classes should override
* processRevision instead.
* @param DatabaseBase $rev
*/
public function handleRevision( $rev ) {
$title = $rev->getTitle();
if ( !$title ) {
$this->error( "Got bogus revision with null title!" );
return;
}
$this->count++;
if ( isset( $this->from ) ) {
if ( $this->from != $title ) {
return;
}
$this->output( "Skipped " . ( $this->count - 1 ) . " pages\n" );
$this->count = 1;
$this->from = null;
}
$this->processRevision( $rev );
}
/* Stub function for processing additional options */
public function checkOptions() {
return;
}
/* Stub function for giving data about what was computed */
public function conclusions() {
return;
}
/* Core function which does whatever the maintenance script is designed to do */
abstract public function processRevision( $rev );
}
/**
* Maintenance script that runs a regex in the revisions from a dump.
*
* @ingroup Maintenance
*/
class SearchDump extends DumpIterator {
public function __construct() {
parent::__construct();
$this->mDescription = "Runs a regex in the revisions from a dump";
$this->addOption( 'regex', 'Searching regex', true, true );
}
public function getDbType() {
return Maintenance::DB_NONE;
}
/**
* @param Revision $rev
*/
public function processRevision( $rev ) {
if ( preg_match( $this->getOption( 'regex' ), $rev->getContent()->getTextForSearchIndex() ) ) {
$this->output( $rev->getTitle() . " matches at edit from " . $rev->getTimestamp() . "\n" );
}
}
}
$maintClass = "SearchDump";
require_once RUN_MAINTENANCE_IF_MAIN;
|
