86 lines
3.1 KiB
PHP
86 lines
3.1 KiB
PHP
<?php
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/**
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* This program 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
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more 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, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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namespace MediaWiki\Title;
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use MediaWiki\Language\Language;
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/**
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* A parser that translates page titles on a foreign wiki into ForeignTitle
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* objects, with no knowledge of the namespace setup on the foreign site.
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*/
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class NaiveForeignTitleFactory implements ForeignTitleFactory {
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private Language $contentLanguage;
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public function __construct( Language $contentLanguage ) {
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$this->contentLanguage = $contentLanguage;
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}
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/**
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* Create a ForeignTitle object.
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*
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* Based on the page title and optionally the namespace ID, of a page on a foreign wiki.
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* These values could be, for example, the `<title>` and `<ns>` attributes found in an
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* XML dump.
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*
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* Although exported XML dumps have contained a map of namespace IDs to names
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* since MW 1.5, the importer used to completely ignore the `<siteinfo>` tag
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* before MW 1.25. It is therefore possible that custom XML dumps (i.e. not
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* generated by Special:Export) have been created without this metadata.
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* As a result, this code falls back to using namespace data for the local
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* wiki (similar to buggy pre-1.25 behaviour) if $ns is not supplied.
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*
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* @param string $title The page title
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* @param int|null $ns The namespace ID, or null if this data is not available
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* @return ForeignTitle
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*/
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public function createForeignTitle( $title, $ns = null ) {
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$pieces = explode( ':', $title, 2 );
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/**
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* Can we assume that the part of the page title before the colon is a
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* namespace name?
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*
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* XML export schema version 0.5 and earlier (MW 1.18 and earlier) does not
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* contain a <ns> tag, so we need to be able to handle that case.
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*
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* If we know the namespace ID, we assume a non-zero namespace ID means
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* the ':' sets off a valid namespace name. If we don't know the namespace
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* ID, we fall back to using the local wiki's namespace names to resolve
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* this -- better than nothing, and mimics the old crappy behavior
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*/
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$isNamespacePartValid = $ns === null
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? $this->contentLanguage->getNsIndex( $pieces[0] ) !== false
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: $ns != 0;
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if ( count( $pieces ) === 2 && $isNamespacePartValid ) {
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[ $namespaceName, $pageName ] = $pieces;
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} else {
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$namespaceName = '';
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$pageName = $title;
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}
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return new ForeignTitle( $ns, $namespaceName, $pageName );
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}
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}
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/** @deprecated class alias since 1.41 */
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class_alias( NaiveForeignTitleFactory::class, 'NaiveForeignTitleFactory' );
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