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<?php |
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/** |
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* File holding the Lingo\Backend class |
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* |
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* This file is part of the MediaWiki extension Lingo. |
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* |
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* @copyright 2011 - 2016, Stephan Gambke |
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* @license GNU General Public License, version 2 (or any later version) |
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* |
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* The Lingo extension 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 the Free |
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* Software Foundation; either version 2 of the License, or (at your option) any |
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* later version. |
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* |
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* The Lingo extension is distributed in the hope that it will be useful, but |
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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* 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, see <http://www.gnu.org/licenses/>. |
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* |
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* @author Stephan Gambke |
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* @file |
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* @ingroup Lingo |
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*/ |
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namespace Lingo; |
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use ApprovedRevs; |
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use Page; |
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use Parser; |
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use ParserOptions; |
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use Revision; |
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use Title; |
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use User; |
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/** |
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* The Lingo\BasicBackend class. |
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* |
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* @ingroup Lingo |
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*/ |
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class BasicBackend extends Backend { |
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protected $mArticleLines = array(); |
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/** |
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* Lingo\BasicBackend constructor. |
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* @param MessageLog|null $messages |
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*/ |
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public function __construct( MessageLog &$messages = null ) { |
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global $wgexLingoPage, $wgRequest; |
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$page = $wgexLingoPage ? $wgexLingoPage : wfMessage( 'lingo-terminologypagename' )->inContentLanguage()->text(); |
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parent::__construct( $messages ); |
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// Get Terminology page |
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$title = Title::newFromText( $page ); |
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if ( $title->getInterwiki() ) { |
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$this->getMessageLog()->addError( wfMessage( 'lingo-terminologypagenotlocal', $page )->inContentLanguage()->text() ); |
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return; |
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} |
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// FIXME: This is a hack special-casing the submitting of the terminology |
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// page itself. In this case the Revision is not up to date when we get |
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// here, i.e. $rev->getText() would return outdated Test. |
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// This hack takes the text directly out of the data from the web request. |
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if ( $wgRequest->getVal( 'action', 'view' ) === 'submit' |
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&& Title::newFromText( $wgRequest->getVal( 'title' ) )->getArticleID() === $title->getArticleID() |
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) { |
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$content = $wgRequest->getVal( 'wpTextbox1' ); |
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} else { |
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$rev = $this->getRevision( $title ); |
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if ( !$rev ) { |
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$this->getMessageLog()->addWarning( wfMessage( 'lingo-noterminologypage', $page )->inContentLanguage()->text() ); |
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return false; |
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} |
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$content = $rev->getText(); |
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} |
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$parser = new Parser; |
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// expand templates and variables in the text, producing valid, static wikitext |
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// have to use a new anonymous user to avoid any leakage as Lingo is caching only one user-independant glossary |
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$content = $parser->preprocess( $content, $title, new ParserOptions( new User() ) ); |
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$this->mArticleLines = array_reverse( explode( "\n", $content ) ); |
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} |
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/** |
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* This function returns the next element. The element is an array of four |
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* strings: Term, Definition, Link, Source. For the Lingo\BasicBackend Link |
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* and Source are set to null. If there is no next element the function |
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* returns null. |
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* |
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* @return Array | null |
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*/ |
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public function next() { |
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wfProfileIn( __METHOD__ ); |
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static $term = null; |
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static $definitions = array(); |
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static $ret = array(); |
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// find next valid line (yes, the assignation is intended) |
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while ( ( count( $ret ) == 0 ) && ( $entry = each( $this->mArticleLines ) ) ) { |
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if ( empty( $entry[ 1 ] ) || ( $entry[ 1 ][ 0 ] !== ';' && $entry[ 1 ][ 0 ] !== ':' ) ) { |
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continue; |
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} |
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$chunks = explode( ':', $entry[ 1 ], 2 ); |
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// found a new definition? |
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if ( count( $chunks ) == 2 ) { |
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// wipe the data if its a totaly new term definition |
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if ( !empty( $term ) && count( $definitions ) > 0 ) { |
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$definitions = array(); |
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$term = null; |
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} |
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$definitions[] = trim( $chunks[ 1 ] ); |
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} |
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// found a new term? |
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if ( count( $chunks ) >= 1 && strlen( $chunks[ 0 ] ) >= 1 ) { |
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$term = trim( substr( $chunks[ 0 ], 1 ) ); |
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} |
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if ( $term !== null ) { |
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foreach ( $definitions as $definition ) { |
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$ret[] = array( |
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Element::ELEMENT_TERM => $term, |
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Element::ELEMENT_DEFINITION => $definition, |
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Element::ELEMENT_LINK => null, |
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Element::ELEMENT_SOURCE => null |
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); |
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} |
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} |
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} |
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wfProfileOut( __METHOD__ ); |
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return array_pop( $ret ); |
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} |
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/** |
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* Returns revision of the terms page. |
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* |
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* @param Title $title |
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* @return Revision |
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*/ |
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public function getRevision( $title ) { |
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global $wgexLingoEnableApprovedRevs; |
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if ( $wgexLingoEnableApprovedRevs ) { |
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if ( defined( 'APPROVED_REVS_VERSION' ) ) { |
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$rev_id = ApprovedRevs::getApprovedRevID( $title ); |
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return Revision::newFromId( $rev_id ); |
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} else { |
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wfDebug( 'Support for ApprovedRevs is enabled in Lingo. But ApprovedRevs was not found.\n' ); |
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} |
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} |
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return Revision::newFromTitle( $title ); |
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} |
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/** |
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* Initiates the purging of the cache when the Terminology page was saved or purged. |
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* |
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* @param Page $wikipage |
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* @return Bool |
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*/ |
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public static function purgeCache( &$wikipage ) { |
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global $wgexLingoPage; |
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$page = $wgexLingoPage ? $wgexLingoPage : wfMessage( 'lingo-terminologypagename' )->inContentLanguage()->text(); |
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if ( !is_null( $wikipage ) && ( $wikipage->getTitle()->getText() === $page ) ) { |
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LingoParser::purgeCache(); |
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} |
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return true; |
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} |
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/** |
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* The basic backend is cache-enabled so this function returns true. |
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* |
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* Actual caching is done by the parser, the backend just calls |
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* Lingo\LingoParser::purgeCache when necessary. |
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* |
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* @return boolean |
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*/ |
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public function useCache() { |
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return true; |
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} |
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} |
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Instead of relying on
globalstate, we recommend one of these alternatives:1. Pass all data via parameters
2. Create a class that maintains your state