+global\ApiQueryContributors::execute()

Complexity

Conditions	23
Paths	1958

Size

Total Lines	159
Code Lines	99

Duplication

Lines	7
Ratio	4.4 %

Importance

Changes

0

<?php
	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( [
			'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( [ 'query', 'pages', $row->page ],
				'anoncontributors', (int)$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( [
			'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 = [];
		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( [ 'user_groups' => [
				$excludeGroups ? 'LEFT OUTER JOIN' : 'INNER JOIN',

The variable $excludeGroups does not seem to be defined for all execution paths leading up to this point.

				[ '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( $row->page,
				[ 'userid' => (int)$row->user, 'name' => $row->username ],
				'user'
			);
			if ( !$fit ) {
				$this->setContinueEnumParameter( 'continue', $row->page . '|' . $row->user );

				return;
			}
		}

		if ( $continuePages !== null ) {
			$this->setContinueEnumParameter( 'continue', $continuePages );
		}
	}