407 lines
12 KiB
PHP
407 lines
12 KiB
PHP
<?php
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/*
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* Created on Oct 19, 2006
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*
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* API for MediaWiki 1.8+
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*
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* Copyright (C) 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*/
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if (!defined('MEDIAWIKI')) {
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// Eclipse helper - will be ignored in production
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require_once ('ApiQueryBase.php');
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}
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/**
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* A query action to enumerate the recent changes that were done to the wiki.
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* Various filters are supported.
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*
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* @addtogroup API
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*/
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class ApiQueryRecentChanges extends ApiQueryBase {
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public function __construct($query, $moduleName) {
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parent :: __construct($query, $moduleName, 'rc');
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}
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private $fld_comment = false, $fld_user = false, $fld_flags = false,
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$fld_timestamp = false, $fld_title = false, $fld_ids = false,
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$fld_sizes = false;
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/**
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* Generates and outputs the result of this query based upon the provided parameters.
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*/
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public function execute() {
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/* Initialize vars */
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$limit = $prop = $namespace = $titles = $show = $type = $dir = $start = $end = null;
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/* Get the parameters of the request. */
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extract($this->extractRequestParams());
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/* Build our basic query. Namely, something along the lines of:
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* SELECT * from recentchanges WHERE rc_timestamp > $start
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* AND rc_timestamp < $end AND rc_namespace = $namespace
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* AND rc_deleted = '0'
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*/
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$db = $this->getDB();
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$rc = $db->tableName('recentchanges');
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$this->addWhereRange('rc_timestamp', $dir, $start, $end);
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$this->addWhereFld('rc_namespace', $namespace);
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$this->addWhereFld('rc_deleted', 0);
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if(!empty($titles))
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{
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$lb = new LinkBatch;
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foreach($titles as $t)
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{
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$obj = Title::newFromText($t);
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$lb->addObj($obj);
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if($obj->getNamespace() < 0)
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{
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// LinkBatch refuses these, but we need them anyway
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if(!array_key_exists($obj->getNamespace(), $lb->data))
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$lb->data[$obj->getNamespace()] = array();
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$lb->data[$obj->getNamespace()][$obj->getDbKey()] = 1;
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}
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}
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$where = $lb->constructSet('rc', $this->getDb());
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if($where != '')
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$this->addWhere($where);
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}
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if(!is_null($type))
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$this->addWhereFld('rc_type', $this->parseRCType($type));
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if (!is_null($show)) {
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$show = array_flip($show);
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/* Check for conflicting parameters. */
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if ((isset ($show['minor']) && isset ($show['!minor']))
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|| (isset ($show['bot']) && isset ($show['!bot']))
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|| (isset ($show['anon']) && isset ($show['!anon']))
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|| (isset ($show['redirect']) && isset ($show['!redirect']))) {
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$this->dieUsage("Incorrect parameter - mutually exclusive values may not be supplied", 'show');
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}
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/* Add additional conditions to query depending upon parameters. */
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$this->addWhereIf('rc_minor = 0', isset ($show['!minor']));
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$this->addWhereIf('rc_minor != 0', isset ($show['minor']));
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$this->addWhereIf('rc_bot = 0', isset ($show['!bot']));
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$this->addWhereIf('rc_bot != 0', isset ($show['bot']));
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$this->addWhereIf('rc_user = 0', isset ($show['anon']));
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$this->addWhereIf('rc_user != 0', isset ($show['!anon']));
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$this->addWhereIf('page_is_redirect = 1', isset ($show['redirect']));
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// Don't throw log entries out the window here
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$this->addWhereIf('page_is_redirect = 0 OR page_is_redirect IS NULL', isset ($show['!redirect']));
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}
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/* Add the fields we're concerned with to out query. */
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$this->addFields(array (
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'rc_timestamp',
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'rc_namespace',
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'rc_title',
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'rc_type',
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'rc_moved_to_ns',
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'rc_moved_to_title'
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));
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/* Determine what properties we need to display. */
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if (!is_null($prop)) {
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$prop = array_flip($prop);
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/* Set up internal members based upon params. */
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$this->fld_comment = isset ($prop['comment']);
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$this->fld_user = isset ($prop['user']);
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$this->fld_flags = isset ($prop['flags']);
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$this->fld_timestamp = isset ($prop['timestamp']);
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$this->fld_title = isset ($prop['title']);
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$this->fld_ids = isset ($prop['ids']);
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$this->fld_sizes = isset ($prop['sizes']);
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$this->fld_redirect = isset($prop['redirect']);
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$this->fld_patrolled = isset($prop['patrolled']);
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global $wgUser;
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if($this->fld_patrolled && !$wgUser->isAllowed('patrol'))
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$this->dieUsage("You need the patrol right to request the patrolled flag", 'permissiondenied');
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/* Add fields to our query if they are specified as a needed parameter. */
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$this->addFieldsIf('rc_id', $this->fld_ids);
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$this->addFieldsIf('rc_cur_id', $this->fld_ids);
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$this->addFieldsIf('rc_this_oldid', $this->fld_ids);
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$this->addFieldsIf('rc_last_oldid', $this->fld_ids);
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$this->addFieldsIf('rc_comment', $this->fld_comment);
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$this->addFieldsIf('rc_user', $this->fld_user);
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$this->addFieldsIf('rc_user_text', $this->fld_user);
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$this->addFieldsIf('rc_minor', $this->fld_flags);
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$this->addFieldsIf('rc_bot', $this->fld_flags);
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$this->addFieldsIf('rc_new', $this->fld_flags);
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$this->addFieldsIf('rc_old_len', $this->fld_sizes);
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$this->addFieldsIf('rc_new_len', $this->fld_sizes);
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$this->addFieldsIf('rc_patrolled', $this->fld_patrolled);
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if($this->fld_redirect || isset($show['redirect']) || isset($show['!redirect']))
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{
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$page = $db->tableName('page');
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$tables = "$page RIGHT JOIN $rc FORCE INDEX(rc_timestamp) ON page_namespace=rc_namespace AND page_title=rc_title";
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$this->addFields('page_is_redirect');
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}
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}
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if(!isset($tables))
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$tables = "$rc FORCE INDEX(rc_timestamp)";
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$this->addTables($tables);
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/* Specify the limit for our query. It's $limit+1 because we (possibly) need to
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* generate a "continue" parameter, to allow paging. */
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$this->addOption('LIMIT', $limit +1);
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$data = array ();
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$count = 0;
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/* Perform the actual query. */
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$db = $this->getDB();
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$res = $this->select(__METHOD__);
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/* Iterate through the rows, adding data extracted from them to our query result. */
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while ($row = $db->fetchObject($res)) {
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if (++ $count > $limit) {
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// We've reached the one extra which shows that there are additional pages to be had. Stop here...
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$this->setContinueEnumParameter('start', wfTimestamp(TS_ISO_8601, $row->rc_timestamp));
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break;
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}
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/* Extract the data from a single row. */
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$vals = $this->extractRowInfo($row);
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/* Add that row's data to our final output. */
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if($vals)
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$data[] = $vals;
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}
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$db->freeResult($res);
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/* Format the result */
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$result = $this->getResult();
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$result->setIndexedTagName($data, 'rc');
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$result->addValue('query', $this->getModuleName(), $data);
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}
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/**
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* Extracts from a single sql row the data needed to describe one recent change.
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*
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* @param $row The row from which to extract the data.
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* @return An array mapping strings (descriptors) to their respective string values.
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* @access private
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*/
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private function extractRowInfo($row) {
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/* If page was moved somewhere, get the title of the move target. */
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$movedToTitle = false;
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if (!empty($row->rc_moved_to_title))
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$movedToTitle = Title :: makeTitle($row->rc_moved_to_ns, $row->rc_moved_to_title);
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/* Determine the title of the page that has been changed. */
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$title = Title :: makeTitle($row->rc_namespace, $row->rc_title);
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/* Our output data. */
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$vals = array ();
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$type = intval ( $row->rc_type );
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/* Determine what kind of change this was. */
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switch ( $type ) {
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case RC_EDIT: $vals['type'] = 'edit'; break;
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case RC_NEW: $vals['type'] = 'new'; break;
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case RC_MOVE: $vals['type'] = 'move'; break;
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case RC_LOG: $vals['type'] = 'log'; break;
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case RC_MOVE_OVER_REDIRECT: $vals['type'] = 'move over redirect'; break;
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default: $vals['type'] = $type;
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}
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/* Create a new entry in the result for the title. */
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if ($this->fld_title) {
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ApiQueryBase :: addTitleInfo($vals, $title);
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if ($movedToTitle)
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ApiQueryBase :: addTitleInfo($vals, $movedToTitle, "new_");
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}
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/* Add ids, such as rcid, pageid, revid, and oldid to the change's info. */
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if ($this->fld_ids) {
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$vals['rcid'] = intval($row->rc_id);
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$vals['pageid'] = intval($row->rc_cur_id);
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$vals['revid'] = intval($row->rc_this_oldid);
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$vals['old_revid'] = intval( $row->rc_last_oldid );
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}
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/* Add user data and 'anon' flag, if use is anonymous. */
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if ($this->fld_user) {
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$vals['user'] = $row->rc_user_text;
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if(!$row->rc_user)
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$vals['anon'] = '';
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}
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/* Add flags, such as new, minor, bot. */
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if ($this->fld_flags) {
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if ($row->rc_bot)
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$vals['bot'] = '';
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if ($row->rc_new)
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$vals['new'] = '';
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if ($row->rc_minor)
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$vals['minor'] = '';
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}
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/* Add sizes of each revision. (Only available on 1.10+) */
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if ($this->fld_sizes) {
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$vals['oldlen'] = intval($row->rc_old_len);
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$vals['newlen'] = intval($row->rc_new_len);
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}
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/* Add the timestamp. */
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if ($this->fld_timestamp)
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$vals['timestamp'] = wfTimestamp(TS_ISO_8601, $row->rc_timestamp);
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/* Add edit summary / log summary. */
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if ($this->fld_comment && !empty ($row->rc_comment)) {
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$vals['comment'] = $row->rc_comment;
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}
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if ($this->fld_redirect)
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if($row->page_is_redirect)
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$vals['redirect'] = '';
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/* Add the patrolled flag */
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if ($this->fld_patrolled && $row->rc_patrolled == 1)
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$vals['patrolled'] = '';
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return $vals;
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}
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private function parseRCType($type)
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{
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if(is_array($type))
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{
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$retval = array();
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foreach($type as $t)
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$retval[] = $this->parseRCType($t);
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return $retval;
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}
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switch($type)
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{
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case 'edit': return RC_EDIT;
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case 'new': return RC_NEW;
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case 'log': return RC_LOG;
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}
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}
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public function getAllowedParams() {
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return array (
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'start' => array (
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ApiBase :: PARAM_TYPE => 'timestamp'
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),
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'end' => array (
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ApiBase :: PARAM_TYPE => 'timestamp'
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),
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'dir' => array (
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ApiBase :: PARAM_DFLT => 'older',
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ApiBase :: PARAM_TYPE => array (
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'newer',
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'older'
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)
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),
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'namespace' => array (
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ApiBase :: PARAM_ISMULTI => true,
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ApiBase :: PARAM_TYPE => 'namespace'
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),
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'titles' => array(
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ApiBase :: PARAM_ISMULTI => true
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),
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'prop' => array (
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ApiBase :: PARAM_ISMULTI => true,
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ApiBase :: PARAM_DFLT => 'title|timestamp|ids',
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ApiBase :: PARAM_TYPE => array (
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'user',
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'comment',
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'flags',
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'timestamp',
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'title',
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'ids',
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'sizes',
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'redirect',
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'patrolled'
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)
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),
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'show' => array (
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ApiBase :: PARAM_ISMULTI => true,
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ApiBase :: PARAM_TYPE => array (
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'minor',
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'!minor',
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'bot',
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'!bot',
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'anon',
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'!anon',
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'redirect',
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'!redirect'
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)
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),
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'limit' => array (
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ApiBase :: PARAM_DFLT => 10,
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ApiBase :: PARAM_TYPE => 'limit',
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ApiBase :: PARAM_MIN => 1,
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ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
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ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
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),
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'type' => array (
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ApiBase :: PARAM_ISMULTI => true,
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ApiBase :: PARAM_TYPE => array (
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'edit',
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'new',
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'log'
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)
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)
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);
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}
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public function getParamDescription() {
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return array (
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'start' => 'The timestamp to start enumerating from.',
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'end' => 'The timestamp to end enumerating.',
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'dir' => 'In which direction to enumerate.',
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'namespace' => 'Filter log entries to only this namespace(s)',
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'titles' => 'Filter log entries to only these page titles',
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'prop' => 'Include additional pieces of information',
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'show' => array (
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'Show only items that meet this criteria.',
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'For example, to see only minor edits done by logged-in users, set show=minor|!anon'
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),
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'type' => 'Which types of changes to show.',
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'limit' => 'How many total pages to return.'
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);
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}
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public function getDescription() {
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return 'Enumerate recent changes';
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}
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protected function getExamples() {
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return array (
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'api.php?action=query&list=recentchanges'
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);
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}
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public function getVersion() {
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return __CLASS__ . ': $Id$';
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}
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}
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