%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* Query the list of contributors to a page
*
* Created on Nov 14, 2013
*
* Copyright © 2013 Brad Jorsch
*
* 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
* @since 1.23
*/
/**
* A query module to show contributors to a page
*
* @ingroup API
* @since 1.23
*/
class ApiQueryContributors extends ApiQueryBase {
/** We don't want to process too many pages at once (it hits cold
* database pages too heavily), so only do the first MAX_PAGES input pages
* in each API call (leaving the rest for continuation).
*/
const MAX_PAGES = 100;
public function __construct( ApiQuery $query, $moduleName ) {
// "pc" is short for "page contributors", "co" was already taken by the
// GeoData extension's prop=coordinates.
parent::__construct( $query, $moduleName, 'pc' );
}
public function execute() {
$db = $this->getDB();
$params = $this->extractRequestParams();
$this->requireMaxOneParameter( $params, 'group', 'excludegroup', 'rights', 'excluderights' );
// Only operate on existing pages
$pages = array_keys( $this->getPageSet()->getGoodTitles() );
// Filter out already-processed pages
if ( $params['continue'] !== null ) {
$cont = explode( '|', $params['continue'] );
$this->dieContinueUsageIf( count( $cont ) != 2 );
$cont_page = (int)$cont[0];
$pages = array_filter( $pages, function ( $v ) use ( $cont_page ) {
return $v >= $cont_page;
} );
}
if ( !count( $pages ) ) {
// Nothing to do
return;
}
// Apply MAX_PAGES, leaving any over the limit for a continue.
sort( $pages );
$continuePages = null;
if ( count( $pages ) > self::MAX_PAGES ) {
$continuePages = $pages[self::MAX_PAGES] . '|0';
$pages = array_slice( $pages, 0, self::MAX_PAGES );
}
$result = $this->getResult();
// First, count anons
$this->addTables( 'revision' );
$this->addFields( array(
'page' => 'rev_page',
'anons' => 'COUNT(DISTINCT rev_user_text)',
) );
$this->addWhereFld( 'rev_page', $pages );
$this->addWhere( 'rev_user = 0' );
$this->addWhere( $db->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' );
$this->addOption( 'GROUP BY', 'rev_page' );
$res = $this->select( __METHOD__ );
foreach ( $res as $row ) {
$fit = $result->addValue( array( 'query', 'pages', $row->page ),
'anoncontributors', $row->anons
);
if ( !$fit ) {
// This not fitting isn't reasonable, so it probably means that
// some other module used up all the space. Just set a dummy
// continue and hope it works next time.
$this->setContinueEnumParameter( 'continue',
$params['continue'] !== null ? $params['continue'] : '0|0'
);
return;
}
}
// Next, add logged-in users
$this->resetQueryParams();
$this->addTables( 'revision' );
$this->addFields( array(
'page' => 'rev_page',
'user' => 'rev_user',
'username' => 'MAX(rev_user_text)', // Non-MySQL databases don't like partial group-by
) );
$this->addWhereFld( 'rev_page', $pages );
$this->addWhere( 'rev_user != 0' );
$this->addWhere( $db->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' );
$this->addOption( 'GROUP BY', 'rev_page, rev_user' );
$this->addOption( 'LIMIT', $params['limit'] + 1 );
// Force a sort order to ensure that properties are grouped by page
// But only if pp_page is not constant in the WHERE clause.
if ( count( $pages ) > 1 ) {
$this->addOption( 'ORDER BY', 'rev_page, rev_user' );
} else {
$this->addOption( 'ORDER BY', 'rev_user' );
}
$limitGroups = array();
if ( $params['group'] ) {
$excludeGroups = false;
$limitGroups = $params['group'];
} elseif ( $params['excludegroup'] ) {
$excludeGroups = true;
$limitGroups = $params['excludegroup'];
} elseif ( $params['rights'] ) {
$excludeGroups = false;
foreach ( $params['rights'] as $r ) {
$limitGroups = array_merge( $limitGroups, User::getGroupsWithPermission( $r ) );
}
// If no group has the rights requested, no need to query
if ( !$limitGroups ) {
if ( $continuePages !== null ) {
// But we still need to continue for the next page's worth
// of anoncontributors
$this->setContinueEnumParameter( 'continue', $continuePages );
}
return;
}
} elseif ( $params['excluderights'] ) {
$excludeGroups = true;
foreach ( $params['excluderights'] as $r ) {
$limitGroups = array_merge( $limitGroups, User::getGroupsWithPermission( $r ) );
}
}
if ( $limitGroups ) {
$limitGroups = array_unique( $limitGroups );
$this->addTables( 'user_groups' );
$this->addJoinConds( array( 'user_groups' => array(
$excludeGroups ? 'LEFT OUTER JOIN' : 'INNER JOIN',
array( 'ug_user=rev_user', 'ug_group' => $limitGroups )
) ) );
$this->addWhereIf( 'ug_user IS NULL', $excludeGroups );
}
if ( $params['continue'] !== null ) {
$cont = explode( '|', $params['continue'] );
$this->dieContinueUsageIf( count( $cont ) != 2 );
$cont_page = (int)$cont[0];
$cont_user = (int)$cont[1];
$this->addWhere(
"rev_page > $cont_page OR " .
"(rev_page = $cont_page AND " .
"rev_user >= $cont_user)"
);
}
$res = $this->select( __METHOD__ );
$count = 0;
foreach ( $res as $row ) {
if ( ++$count > $params['limit'] ) {
// We've reached the one extra which shows that
// there are additional pages to be had. Stop here...
$this->setContinueEnumParameter( 'continue', $row->page . '|' . $row->user );
return;
}
$fit = $this->addPageSubItem( $row->page,
array( 'userid' => $row->user, 'name' => $row->username ),
'user'
);
if ( !$fit ) {
$this->setContinueEnumParameter( 'continue', $row->page . '|' . $row->user );
return;
}
}
if ( $continuePages !== null ) {
$this->setContinueEnumParameter( 'continue', $continuePages );
}
}
public function getCacheMode( $params ) {
return 'public';
}
public function getAllowedParams() {
$userGroups = User::getAllGroups();
$userRights = User::getAllRights();
return array(
'group' => array(
ApiBase::PARAM_TYPE => $userGroups,
ApiBase::PARAM_ISMULTI => true,
),
'excludegroup' => array(
ApiBase::PARAM_TYPE => $userGroups,
ApiBase::PARAM_ISMULTI => true,
),
'rights' => array(
ApiBase::PARAM_TYPE => $userRights,
ApiBase::PARAM_ISMULTI => true,
),
'excluderights' => array(
ApiBase::PARAM_TYPE => $userRights,
ApiBase::PARAM_ISMULTI => true,
),
'limit' => array(
ApiBase::PARAM_DFLT => 10,
ApiBase::PARAM_TYPE => 'limit',
ApiBase::PARAM_MIN => 1,
ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
),
'continue' => array(
ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
),
);
}
protected function getExamplesMessages() {
return array(
'action=query&prop=contributors&titles=Main_Page'
=> 'apihelp-query+contributors-example-simple',
);
}
public function getHelpUrls() {
return 'https://www.mediawiki.org/wiki/API:Properties#contributors_.2F_pc';
}
}
Zerion Mini Shell 1.0