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| 1 | <?php |
| 2 | /** |
| 3 | * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com" |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | */ |
| 22 | |
| 23 | use MediaWiki\Languages\LanguageNameUtils; |
| 24 | use MediaWiki\MainConfigNames; |
| 25 | use MediaWiki\Title\Title; |
| 26 | use MediaWiki\Utils\UrlUtils; |
| 27 | use Wikimedia\ParamValidator\ParamValidator; |
| 28 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 29 | |
| 30 | /** |
| 31 | * A query module to list all langlinks (links to corresponding foreign language pages). |
| 32 | * |
| 33 | * @ingroup API |
| 34 | */ |
| 35 | class ApiQueryLangLinks extends ApiQueryBase { |
| 36 | |
| 37 | private LanguageNameUtils $languageNameUtils; |
| 38 | private Language $contentLanguage; |
| 39 | private UrlUtils $urlUtils; |
| 40 | |
| 41 | public function __construct( |
| 42 | ApiQuery $query, |
| 43 | $moduleName, |
| 44 | LanguageNameUtils $languageNameUtils, |
| 45 | Language $contentLanguage, |
| 46 | UrlUtils $urlUtils |
| 47 | ) { |
| 48 | parent::__construct( $query, $moduleName, 'll' ); |
| 49 | $this->languageNameUtils = $languageNameUtils; |
| 50 | $this->contentLanguage = $contentLanguage; |
| 51 | $this->urlUtils = $urlUtils; |
| 52 | } |
| 53 | |
| 54 | public function execute() { |
| 55 | $pages = $this->getPageSet()->getGoodPages(); |
| 56 | if ( $pages === [] ) { |
| 57 | return; |
| 58 | } |
| 59 | |
| 60 | $params = $this->extractRequestParams(); |
| 61 | $prop = array_fill_keys( (array)$params['prop'], true ); |
| 62 | |
| 63 | if ( isset( $params['title'] ) && !isset( $params['lang'] ) ) { |
| 64 | $this->dieWithError( |
| 65 | [ |
| 66 | 'apierror-invalidparammix-mustusewith', |
| 67 | $this->encodeParamName( 'title' ), |
| 68 | $this->encodeParamName( 'lang' ), |
| 69 | ], |
| 70 | 'invalidparammix' |
| 71 | ); |
| 72 | } |
| 73 | |
| 74 | // Handle deprecated param |
| 75 | $this->requireMaxOneParameter( $params, 'url', 'prop' ); |
| 76 | if ( $params['url'] ) { |
| 77 | $prop = [ 'url' => 1 ]; |
| 78 | } |
| 79 | |
| 80 | $this->addFields( [ |
| 81 | 'll_from', |
| 82 | 'll_lang', |
| 83 | 'll_title' |
| 84 | ] ); |
| 85 | |
| 86 | $this->addTables( 'langlinks' ); |
| 87 | $this->addWhereFld( 'll_from', array_keys( $pages ) ); |
| 88 | if ( $params['continue'] !== null ) { |
| 89 | $db = $this->getDB(); |
| 90 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'int', 'string' ] ); |
| 91 | $op = $params['dir'] == 'descending' ? '<=' : '>='; |
| 92 | $this->addWhere( $db->buildComparison( $op, [ |
| 93 | 'll_from' => $cont[0], |
| 94 | 'll_lang' => $cont[1], |
| 95 | ] ) ); |
| 96 | } |
| 97 | |
| 98 | // FIXME: (follow-up) To allow extensions to add to the language links, we need |
| 99 | // to load them all, add the extra links, then apply paging. |
| 100 | // Should not be terrible, it's not going to be more than a few hundred links. |
| 101 | |
| 102 | // Note that, since (ll_from, ll_lang) is a unique key, we don't need |
| 103 | // to sort by ll_title to ensure deterministic ordering. |
| 104 | $sort = ( $params['dir'] == 'descending' ? ' DESC' : '' ); |
| 105 | if ( isset( $params['lang'] ) ) { |
| 106 | $this->addWhereFld( 'll_lang', $params['lang'] ); |
| 107 | if ( isset( $params['title'] ) ) { |
| 108 | $this->addWhereFld( 'll_title', $params['title'] ); |
| 109 | } |
| 110 | $this->addOption( 'ORDER BY', 'll_from' . $sort ); |
| 111 | } else { |
| 112 | // Don't order by ll_from if it's constant in the WHERE clause |
| 113 | if ( count( $pages ) === 1 ) { |
| 114 | $this->addOption( 'ORDER BY', 'll_lang' . $sort ); |
| 115 | } else { |
| 116 | $this->addOption( 'ORDER BY', [ |
| 117 | 'll_from' . $sort, |
| 118 | 'll_lang' . $sort |
| 119 | ] ); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | $this->addOption( 'LIMIT', $params['limit'] + 1 ); |
| 124 | $res = $this->select( __METHOD__ ); |
| 125 | |
| 126 | $count = 0; |
| 127 | foreach ( $res as $row ) { |
| 128 | if ( ++$count > $params['limit'] ) { |
| 129 | // We've reached the one extra which shows that |
| 130 | // there are additional pages to be had. Stop here... |
| 131 | $this->setContinueEnumParameter( 'continue', "{$row->ll_from}|{$row->ll_lang}" ); |
| 132 | break; |
| 133 | } |
| 134 | |
| 135 | $languageNameMap = $this->getConfig()->get( MainConfigNames::InterlanguageLinkCodeMap ); |
| 136 | $displayLanguageCode = $languageNameMap[ $row->ll_lang ] ?? $row->ll_lang; |
| 137 | |
| 138 | // This is potentially risky and confusing (request `no`, but get `nb` in the result). |
| 139 | $entry = [ 'lang' => $displayLanguageCode ]; |
| 140 | if ( isset( $prop['url'] ) ) { |
| 141 | $title = Title::newFromText( "{$row->ll_lang}:{$row->ll_title}" ); |
| 142 | if ( $title ) { |
| 143 | $entry['url'] = (string)$this->urlUtils->expand( $title->getFullURL(), PROTO_CURRENT ); |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | if ( isset( $prop['langname'] ) ) { |
| 148 | $entry['langname'] = $this->languageNameUtils |
| 149 | ->getLanguageName( $displayLanguageCode, $params['inlanguagecode'] ); |
| 150 | } |
| 151 | if ( isset( $prop['autonym'] ) ) { |
| 152 | $entry['autonym'] = $this->languageNameUtils->getLanguageName( $displayLanguageCode ); |
| 153 | } |
| 154 | ApiResult::setContentValue( $entry, 'title', $row->ll_title ); |
| 155 | $fit = $this->addPageSubItem( $row->ll_from, $entry ); |
| 156 | if ( !$fit ) { |
| 157 | $this->setContinueEnumParameter( 'continue', "{$row->ll_from}|{$row->ll_lang}" ); |
| 158 | break; |
| 159 | } |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | public function getCacheMode( $params ) { |
| 164 | return 'public'; |
| 165 | } |
| 166 | |
| 167 | public function getAllowedParams() { |
| 168 | return [ |
| 169 | 'prop' => [ |
| 170 | ParamValidator::PARAM_ISMULTI => true, |
| 171 | ParamValidator::PARAM_TYPE => [ |
| 172 | 'url', |
| 173 | 'langname', |
| 174 | 'autonym', |
| 175 | ], |
| 176 | ApiBase::PARAM_HELP_MSG_PER_VALUE => [], |
| 177 | ], |
| 178 | 'lang' => null, |
| 179 | 'title' => null, |
| 180 | 'dir' => [ |
| 181 | ParamValidator::PARAM_DEFAULT => 'ascending', |
| 182 | ParamValidator::PARAM_TYPE => [ |
| 183 | 'ascending', |
| 184 | 'descending' |
| 185 | ] |
| 186 | ], |
| 187 | 'inlanguagecode' => $this->contentLanguage->getCode(), |
| 188 | 'limit' => [ |
| 189 | ParamValidator::PARAM_DEFAULT => 10, |
| 190 | ParamValidator::PARAM_TYPE => 'limit', |
| 191 | IntegerDef::PARAM_MIN => 1, |
| 192 | IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1, |
| 193 | IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
| 194 | ], |
| 195 | 'continue' => [ |
| 196 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
| 197 | ], |
| 198 | 'url' => [ |
| 199 | ParamValidator::PARAM_DEFAULT => false, |
| 200 | ParamValidator::PARAM_DEPRECATED => true, |
| 201 | ], |
| 202 | ]; |
| 203 | } |
| 204 | |
| 205 | protected function getExamplesMessages() { |
| 206 | $title = Title::newMainPage()->getPrefixedText(); |
| 207 | $mp = rawurlencode( $title ); |
| 208 | |
| 209 | return [ |
| 210 | "action=query&prop=langlinks&titles={$mp}&redirects=" |
| 211 | => 'apihelp-query+langlinks-example-simple', |
| 212 | ]; |
| 213 | } |
| 214 | |
| 215 | public function getHelpUrls() { |
| 216 | return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Langlinks'; |
| 217 | } |
| 218 | } |