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+<?php
+/**
+ * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
+ *
+ * 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
+ */
+
+/**
+ * Query module to enumerate links from all pages together.
+ *
+ * @ingroup API
+ */
+class ApiQueryAllLinks extends ApiQueryGeneratorBase {
+
+ private $table, $tablePrefix, $indexTag;
+ private $fieldTitle = 'title';
+ private $dfltNamespace = NS_MAIN;
+ private $hasNamespace = true;
+ private $useIndex = null;
+ private $props = [];
+
+ public function __construct( ApiQuery $query, $moduleName ) {
+ switch ( $moduleName ) {
+ case 'alllinks':
+ $prefix = 'al';
+ $this->table = 'pagelinks';
+ $this->tablePrefix = 'pl_';
+ $this->useIndex = 'pl_namespace';
+ $this->indexTag = 'l';
+ break;
+ case 'alltransclusions':
+ $prefix = 'at';
+ $this->table = 'templatelinks';
+ $this->tablePrefix = 'tl_';
+ $this->dfltNamespace = NS_TEMPLATE;
+ $this->useIndex = 'tl_namespace';
+ $this->indexTag = 't';
+ break;
+ case 'allfileusages':
+ $prefix = 'af';
+ $this->table = 'imagelinks';
+ $this->tablePrefix = 'il_';
+ $this->fieldTitle = 'to';
+ $this->dfltNamespace = NS_FILE;
+ $this->hasNamespace = false;
+ $this->indexTag = 'f';
+ break;
+ case 'allredirects':
+ $prefix = 'ar';
+ $this->table = 'redirect';
+ $this->tablePrefix = 'rd_';
+ $this->indexTag = 'r';
+ $this->props = [
+ 'fragment' => 'rd_fragment',
+ 'interwiki' => 'rd_interwiki',
+ ];
+ break;
+ default:
+ ApiBase::dieDebug( __METHOD__, 'Unknown module name' );
+ }
+
+ parent::__construct( $query, $moduleName, $prefix );
+ }
+
+ public function execute() {
+ $this->run();
+ }
+
+ public function getCacheMode( $params ) {
+ return 'public';
+ }
+
+ public function executeGenerator( $resultPageSet ) {
+ $this->run( $resultPageSet );
+ }
+
+ /**
+ * @param ApiPageSet $resultPageSet
+ * @return void
+ */
+ private function run( $resultPageSet = null ) {
+ $db = $this->getDB();
+ $params = $this->extractRequestParams();
+
+ $pfx = $this->tablePrefix;
+ $fieldTitle = $this->fieldTitle;
+ $prop = array_flip( $params['prop'] );
+ $fld_ids = isset( $prop['ids'] );
+ $fld_title = isset( $prop['title'] );
+ if ( $this->hasNamespace ) {
+ $namespace = $params['namespace'];
+ } else {
+ $namespace = $this->dfltNamespace;
+ }
+
+ if ( $params['unique'] ) {
+ $matches = array_intersect_key( $prop, $this->props + [ 'ids' => 1 ] );
+ if ( $matches ) {
+ $p = $this->getModulePrefix();
+ $this->dieWithError(
+ [
+ 'apierror-invalidparammix-cannotusewith',
+ "{$p}prop=" . implode( '|', array_keys( $matches ) ),
+ "{$p}unique"
+ ],
+ 'invalidparammix'
+ );
+ }
+ $this->addOption( 'DISTINCT' );
+ }
+
+ $this->addTables( $this->table );
+ if ( $this->hasNamespace ) {
+ $this->addWhereFld( $pfx . 'namespace', $namespace );
+ }
+
+ $continue = !is_null( $params['continue'] );
+ if ( $continue ) {
+ $continueArr = explode( '|', $params['continue'] );
+ $op = $params['dir'] == 'descending' ? '<' : '>';
+ if ( $params['unique'] ) {
+ $this->dieContinueUsageIf( count( $continueArr ) != 1 );
+ $continueTitle = $db->addQuotes( $continueArr[0] );
+ $this->addWhere( "{$pfx}{$fieldTitle} $op= $continueTitle" );
+ } else {
+ $this->dieContinueUsageIf( count( $continueArr ) != 2 );
+ $continueTitle = $db->addQuotes( $continueArr[0] );
+ $continueFrom = intval( $continueArr[1] );
+ $this->addWhere(
+ "{$pfx}{$fieldTitle} $op $continueTitle OR " .
+ "({$pfx}{$fieldTitle} = $continueTitle AND " .
+ "{$pfx}from $op= $continueFrom)"
+ );
+ }
+ }
+
+ // 'continue' always overrides 'from'
+ $from = ( $continue || $params['from'] === null ? null :
+ $this->titlePartToKey( $params['from'], $namespace ) );
+ $to = ( $params['to'] === null ? null :
+ $this->titlePartToKey( $params['to'], $namespace ) );
+ $this->addWhereRange( $pfx . $fieldTitle, 'newer', $from, $to );
+
+ if ( isset( $params['prefix'] ) ) {
+ $this->addWhere( $pfx . $fieldTitle . $db->buildLike( $this->titlePartToKey(
+ $params['prefix'], $namespace ), $db->anyString() ) );
+ }
+
+ $this->addFields( [ 'pl_title' => $pfx . $fieldTitle ] );
+ $this->addFieldsIf( [ 'pl_from' => $pfx . 'from' ], !$params['unique'] );
+ foreach ( $this->props as $name => $field ) {
+ $this->addFieldsIf( $field, isset( $prop[$name] ) );
+ }
+
+ if ( $this->useIndex ) {
+ $this->addOption( 'USE INDEX', $this->useIndex );
+ }
+ $limit = $params['limit'];
+ $this->addOption( 'LIMIT', $limit + 1 );
+
+ $sort = ( $params['dir'] == 'descending' ? ' DESC' : '' );
+ $orderBy = [];
+ $orderBy[] = $pfx . $fieldTitle . $sort;
+ if ( !$params['unique'] ) {
+ $orderBy[] = $pfx . 'from' . $sort;
+ }
+ $this->addOption( 'ORDER BY', $orderBy );
+
+ $res = $this->select( __METHOD__ );
+
+ $pageids = [];
+ $titles = [];
+ $count = 0;
+ $result = $this->getResult();
+ foreach ( $res as $row ) {
+ if ( ++$count > $limit ) {
+ // We've reached the one extra which shows that there are
+ // additional pages to be had. Stop here...
+ if ( $params['unique'] ) {
+ $this->setContinueEnumParameter( 'continue', $row->pl_title );
+ } else {
+ $this->setContinueEnumParameter( 'continue', $row->pl_title . '|' . $row->pl_from );
+ }
+ break;
+ }
+
+ if ( is_null( $resultPageSet ) ) {
+ $vals = [
+ ApiResult::META_TYPE => 'assoc',
+ ];
+ if ( $fld_ids ) {
+ $vals['fromid'] = intval( $row->pl_from );
+ }
+ if ( $fld_title ) {
+ $title = Title::makeTitle( $namespace, $row->pl_title );
+ ApiQueryBase::addTitleInfo( $vals, $title );
+ }
+ foreach ( $this->props as $name => $field ) {
+ if ( isset( $prop[$name] ) && $row->$field !== null && $row->$field !== '' ) {
+ $vals[$name] = $row->$field;
+ }
+ }
+ $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
+ if ( !$fit ) {
+ if ( $params['unique'] ) {
+ $this->setContinueEnumParameter( 'continue', $row->pl_title );
+ } else {
+ $this->setContinueEnumParameter( 'continue', $row->pl_title . '|' . $row->pl_from );
+ }
+ break;
+ }
+ } elseif ( $params['unique'] ) {
+ $titles[] = Title::makeTitle( $namespace, $row->pl_title );
+ } else {
+ $pageids[] = $row->pl_from;
+ }
+ }
+
+ if ( is_null( $resultPageSet ) ) {
+ $result->addIndexedTagName( [ 'query', $this->getModuleName() ], $this->indexTag );
+ } elseif ( $params['unique'] ) {
+ $resultPageSet->populateFromTitles( $titles );
+ } else {
+ $resultPageSet->populateFromPageIDs( $pageids );
+ }
+ }
+
+ public function getAllowedParams() {
+ $allowedParams = [
+ 'continue' => [
+ ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
+ ],
+ 'from' => null,
+ 'to' => null,
+ 'prefix' => null,
+ 'unique' => false,
+ 'prop' => [
+ ApiBase::PARAM_ISMULTI => true,
+ ApiBase::PARAM_DFLT => 'title',
+ ApiBase::PARAM_TYPE => array_merge(
+ [ 'ids', 'title' ], array_keys( $this->props )
+ ),
+ ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
+ ],
+ 'namespace' => [
+ ApiBase::PARAM_DFLT => $this->dfltNamespace,
+ ApiBase::PARAM_TYPE => 'namespace',
+ ApiBase::PARAM_EXTRA_NAMESPACES => [ NS_MEDIA, NS_SPECIAL ],
+ ],
+ 'limit' => [
+ ApiBase::PARAM_DFLT => 10,
+ ApiBase::PARAM_TYPE => 'limit',
+ ApiBase::PARAM_MIN => 1,
+ ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
+ ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
+ ],
+ 'dir' => [
+ ApiBase::PARAM_DFLT => 'ascending',
+ ApiBase::PARAM_TYPE => [
+ 'ascending',
+ 'descending'
+ ]
+ ],
+ ];
+ if ( !$this->hasNamespace ) {
+ unset( $allowedParams['namespace'] );
+ }
+
+ return $allowedParams;
+ }
+
+ protected function getExamplesMessages() {
+ $p = $this->getModulePrefix();
+ $name = $this->getModuleName();
+ $path = $this->getModulePath();
+
+ return [
+ "action=query&list={$name}&{$p}from=B&{$p}prop=ids|title"
+ => "apihelp-$path-example-B",
+ "action=query&list={$name}&{$p}unique=&{$p}from=B"
+ => "apihelp-$path-example-unique",
+ "action=query&generator={$name}&g{$p}unique=&g{$p}from=B"
+ => "apihelp-$path-example-unique-generator",
+ "action=query&generator={$name}&g{$p}from=B"
+ => "apihelp-$path-example-generator",
+ ];
+ }
+
+ public function getHelpUrls() {
+ $name = ucfirst( $this->getModuleName() );
+
+ return "https://www.mediawiki.org/wiki/Special:MyLanguage/API:{$name}";
+ }
+}