1281 lines
36 KiB
PHP
1281 lines
36 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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* @author Zhengzhu Feng <zhengzhu@gmail.com>
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* @author fdcn <fdcn64@gmail.com>
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* @author shinjiman <shinjiman@gmail.com>
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* @author PhiLiP <philip.npc@gmail.com>
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*/
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namespace MediaWiki\Language;
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use InvalidArgumentException;
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use MediaWiki\Context\RequestContext;
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use MediaWiki\Debug\DeprecationHelper;
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use MediaWiki\HookContainer\HookRunner;
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use MediaWiki\Html\Html;
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use MediaWiki\Linker\LinkTarget;
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use MediaWiki\Logger\LoggerFactory;
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use MediaWiki\MainConfigNames;
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use MediaWiki\MediaWikiServices;
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use MediaWiki\Page\PageIdentity;
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use MediaWiki\Parser\Parser;
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use MediaWiki\Parser\Sanitizer;
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use MediaWiki\Revision\RevisionRecord;
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use MediaWiki\Revision\SlotRecord;
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use MediaWiki\StubObject\StubUserLang;
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use MediaWiki\Title\Title;
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use MediaWiki\User\User;
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use RuntimeException;
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use StringUtils;
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use UnexpectedValueException;
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use Wikimedia\ObjectCache\BagOStuff;
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/**
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* Base class for multi-variant language conversion.
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*
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* @ingroup Language
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*/
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abstract class LanguageConverter implements ILanguageConverter {
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use DeprecationHelper;
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/**
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* languages supporting variants
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* @since 1.20
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* @var string[]
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*/
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public static $languagesWithVariants = [
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'ban',
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'en',
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'crh',
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'gan',
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'iu',
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'ku',
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'mni',
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'sh',
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'shi',
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'sr',
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'tg',
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'tly',
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'uz',
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'wuu',
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'zgh',
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'zh',
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];
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/**
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* static default variant of languages supporting variants
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* for use with DefaultOptionsLookup.php
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* @since 1.40
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* @var array<string,string>
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*/
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public static $languagesWithStaticDefaultVariant = [
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'ban' => 'ban',
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'en' => 'en',
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'crh' => 'crh',
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'gan' => 'gan',
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'iu' => 'iu',
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'ku' => 'ku',
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'mni' => 'mni',
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'sh' => 'sh-latn',
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'shi' => 'shi',
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'sr' => 'sr',
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'tg' => 'tg',
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'tly' => 'tly',
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'uz' => 'uz',
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'wuu' => 'wuu',
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'zgh' => 'zgh',
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'zh' => 'zh',
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];
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/** @var bool */
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private $mTablesLoaded = false;
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/** @var ReplacementArray[] */
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protected $mTables = [];
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/** @var Language|StubUserLang */
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private $mLangObj;
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/** @var string|false */
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private $mConvRuleTitle = false;
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/** @var string|null */
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private $mURLVariant;
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/** @var string|null */
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private $mUserVariant;
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/** @var string|null */
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private $mHeaderVariant;
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/** @var int */
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private $mMaxDepth = 10;
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/** @var string|null */
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private $mVarSeparatorPattern;
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private const CACHE_VERSION_KEY = 'VERSION 7';
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/**
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* @param Language|StubUserLang $langobj
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*/
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public function __construct( $langobj ) {
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$this->mLangObj = $langobj;
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}
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/**
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* Get the language code with converter (the "main" language code).
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* Page language code would be the same of the language code with converter.
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* Note that this code might not be included as one of the variant languages.
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* @since 1.36
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*
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* @return string
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*/
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abstract public function getMainCode(): string;
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/**
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* Get static default variant.
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* For use of specify the default variant form when it different from the
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* default "unconverted/mixed-variant form".
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* @since 1.40
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*
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* @return string
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*/
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protected function getStaticDefaultVariant(): string {
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$code = $this->getMainCode();
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return self::$languagesWithStaticDefaultVariant[$code] ?? $code;
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}
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/**
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* Get supported variants of the language.
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* @since 1.36
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*
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* @return array
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*/
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abstract protected function getLanguageVariants(): array;
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/**
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* Get language variants fallbacks.
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* @since 1.36
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*
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* @return array
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*/
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abstract public function getVariantsFallbacks(): array;
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/**
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* Get the strings that map to the flags.
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* @since 1.36
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*
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* @return array
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*/
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final public function getFlags(): array {
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$defaultflags = [
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// 'S' show the converted text
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// '+' add rules for alltext
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// 'E' the flags have an error
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// these flags above are reserved for program
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'A' => 'A', // add rule for convert code (all text converted)
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'T' => 'T', // title convert
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'R' => 'R', // raw content
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'D' => 'D', // convert description (subclass implement)
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'-' => '-', // remove convert (not implement)
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'H' => 'H', // add rule for convert code (but no display in placed code)
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'N' => 'N', // current variant name
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];
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$flags = array_merge( $defaultflags, $this->getAdditionalFlags() );
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foreach ( $this->getVariants() as $v ) {
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$flags[$v] = $v;
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}
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return $flags;
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}
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/**
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* Provides additional flags for converter. By default, it returns empty array and
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* typically should be overridden by implementation of converter.
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*
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* @return array
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*/
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protected function getAdditionalFlags(): array {
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return [];
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}
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/**
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* Get manual level limit for supported variants.
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* @since 1.36
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*
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* @return array
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*/
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final public function getManualLevel() {
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$manualLevel = $this->getAdditionalManualLevel();
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$result = [];
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foreach ( $this->getVariants() as $v ) {
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if ( array_key_exists( $v, $manualLevel ) ) {
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$result[$v] = $manualLevel[$v];
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} else {
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$result[$v] = 'bidirectional';
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}
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}
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return $result;
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}
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/**
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* Provides additional flags for converter. By default, this function returns an empty array and
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* typically should be overridden by the implementation of converter.
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* @since 1.36
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*
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* @return array
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*/
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protected function getAdditionalManualLevel(): array {
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return [];
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}
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/**
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* Get desc code separator. By default returns ":", can be overridden by
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* implementation of converter.
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* @since 1.36
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*
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* @return string
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*/
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public function getDescCodeSeparator(): string {
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return ':';
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}
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/**
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* Get desc var separator. By default returns ";", can be overridden by
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* implementation of converter.
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* @since 1.36
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*
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* @return string
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*/
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public function getDescVarSeparator(): string {
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return ';';
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}
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/**
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* Get variant names.
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*
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* @return array
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*/
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public function getVariantNames(): array {
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return MediaWikiServices::getInstance()
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->getLanguageNameUtils()
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->getLanguageNames();
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}
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final public function getVariants() {
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$disabledVariants = MediaWikiServices::getInstance()->getMainConfig()->get(
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MainConfigNames::DisabledVariants );
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return array_diff( $this->getLanguageVariants(), $disabledVariants );
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}
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public function getVariantFallbacks( $variant ) {
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return $this->getVariantsFallbacks()[$variant] ?? $this->getStaticDefaultVariant();
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}
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public function getConvRuleTitle() {
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return $this->mConvRuleTitle;
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}
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public function getPreferredVariant() {
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$req = $this->getURLVariant();
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$services = MediaWikiServices::getInstance();
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( new HookRunner( $services->getHookContainer() ) )->onGetLangPreferredVariant( $req );
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if ( !$req ) {
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$user = RequestContext::getMain()->getUser();
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// NOTE: For some calls there may not be a context user or session that is safe
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// to use, see (T235360)
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// Use case: During user autocreation, UserNameUtils::isUsable is called which uses interface
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// messages for reserved usernames.
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if ( $user->isSafeToLoad() && $user->isRegistered() ) {
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$req = $this->getUserVariant( $user );
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} else {
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$req = $this->getHeaderVariant();
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}
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}
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$defaultLanguageVariant = $services->getMainConfig()
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->get( MainConfigNames::DefaultLanguageVariant );
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if ( !$req && $defaultLanguageVariant ) {
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$req = $this->validateVariant( $defaultLanguageVariant );
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}
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$req = $this->validateVariant( $req );
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// This function, unlike the other get*Variant functions, is
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// not memoized (i.e., there return value is not cached) since
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// new information might appear during processing after this
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// is first called.
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return $req ?? $this->getStaticDefaultVariant();
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}
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public function getDefaultVariant() {
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$defaultLanguageVariant = MediaWikiServices::getInstance()->getMainConfig()->get(
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MainConfigNames::DefaultLanguageVariant );
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$req = $this->getURLVariant() ?? $this->getHeaderVariant();
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if ( !$req && $defaultLanguageVariant ) {
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$req = $this->validateVariant( $defaultLanguageVariant );
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}
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return $req ?? $this->getStaticDefaultVariant();
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}
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public function validateVariant( $variant = null ) {
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if ( $variant === null ) {
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return null;
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}
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// Our internal variants are always lower-case; the variant we
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// are validating may have mixed cases.
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$variant = LanguageCode::replaceDeprecatedCodes( strtolower( $variant ) );
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if ( in_array( $variant, $this->getVariants() ) ) {
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return $variant;
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}
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// Browsers are supposed to use BCP 47 standard in the
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// Accept-Language header, but not all of our internal
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// mediawiki variant codes are BCP 47. Map BCP 47 code
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// to our internal code.
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foreach ( $this->getVariants() as $v ) {
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// Case-insensitive match (BCP 47 is mixed-case)
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if ( strtolower( LanguageCode::bcp47( $v ) ) === $variant ) {
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return $v;
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}
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}
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return null;
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}
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public function getURLVariant() {
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if ( $this->mURLVariant ) {
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return $this->mURLVariant;
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}
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$request = RequestContext::getMain()->getRequest();
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// see if the preference is set in the request
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$ret = $request->getText( 'variant' );
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if ( !$ret ) {
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$ret = $request->getVal( 'uselang' );
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}
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$this->mURLVariant = $this->validateVariant( $ret );
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return $this->mURLVariant;
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}
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/**
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* Determine if the user has a variant set.
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*
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* @param User $user
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* @return string|null Variant if one found, null otherwise
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*/
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protected function getUserVariant( User $user ) {
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// This should only be called within the class after the user is known to be
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// safe to load and logged in, but check just in case.
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if ( !$user->isSafeToLoad() ) {
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return null;
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}
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if ( !$this->mUserVariant ) {
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$services = MediaWikiServices::getInstance();
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if ( $user->isRegistered() ) {
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// Get language variant preference from logged in users
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if (
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$this->getMainCode() ===
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$services->getContentLanguage()->getCode()
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) {
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$optionName = 'variant';
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} else {
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$optionName = 'variant-' . $this->getMainCode();
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}
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} else {
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// figure out user lang without constructing wgLang to avoid
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// infinite recursion
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$optionName = 'language';
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}
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$ret = $services->getUserOptionsLookup()->getOption( $user, $optionName );
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$this->mUserVariant = $this->validateVariant( $ret );
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}
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return $this->mUserVariant;
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}
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/**
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* Determine the language variant from the Accept-Language header.
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*
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* @return string|null Variant if one found, null otherwise
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*/
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protected function getHeaderVariant() {
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if ( $this->mHeaderVariant ) {
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return $this->mHeaderVariant;
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}
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$request = RequestContext::getMain()->getRequest();
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// See if some supported language variant is set in the
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// HTTP header.
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$languages = array_keys( $request->getAcceptLang() );
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if ( !$languages ) {
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return null;
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}
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$fallbackLanguages = [];
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foreach ( $languages as $language ) {
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$this->mHeaderVariant = $this->validateVariant( $language );
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if ( $this->mHeaderVariant ) {
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break;
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}
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// To see if there are fallbacks of current language.
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// We record these fallback variants, and process
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// them later.
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$fallbacks = $this->getVariantFallbacks( $language );
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if (
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is_string( $fallbacks ) &&
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$fallbacks !== $this->getStaticDefaultVariant()
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) {
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$fallbackLanguages[] = $fallbacks;
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} elseif ( is_array( $fallbacks ) ) {
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$fallbackLanguages =
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array_merge( $fallbackLanguages, $fallbacks );
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}
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}
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if ( !$this->mHeaderVariant ) {
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// process fallback languages now
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$fallback_languages = array_unique( $fallbackLanguages );
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foreach ( $fallback_languages as $language ) {
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$this->mHeaderVariant = $this->validateVariant( $language );
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if ( $this->mHeaderVariant ) {
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break;
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}
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}
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}
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return $this->mHeaderVariant;
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}
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public function autoConvert( $text, $toVariant = false ) {
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$this->loadTables();
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if ( !$toVariant ) {
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$toVariant = $this->getPreferredVariant();
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if ( !$toVariant ) {
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return $text;
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}
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}
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if ( $this->guessVariant( $text, $toVariant ) ) {
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return $text;
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}
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/**
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* We convert everything except:
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* 1. HTML markups (anything between < and >)
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* 2. HTML entities
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* 3. placeholders created by the parser
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* IMPORTANT: Beware of failure from pcre.backtrack_limit (T124404).
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* Minimize the use of backtracking where possible.
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*/
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static $reg;
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if ( $reg === null ) {
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$marker = '|' . Parser::MARKER_PREFIX . '[^\x7f]++\x7f';
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// this one is needed when the text is inside an HTML markup
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$htmlfix = '|<[^>\004]++(?=\004$)|^[^<>]*+>';
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// Optimize for the common case where these tags have
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// few or no children. Thus try and possessively get as much as
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// possible, and only engage in backtracking when we hit a '<'.
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// disable convert to variants between <code> tags
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$codefix = '<code>[^<]*+(?:(?:(?!<\/code>).)[^<]*+)*+<\/code>|';
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// disable conversion of <script> tags
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$scriptfix = '<script[^>]*+>[^<]*+(?:(?:(?!<\/script>).)[^<]*+)*+<\/script>|';
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// disable conversion of <pre> tags
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$prefix = '<pre[^>]*+>[^<]*+(?:(?:(?!<\/pre>).)[^<]*+)*+<\/pre>|';
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// The "|.*+)" at the end, is in case we missed some part of html syntax,
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// we will fail securely (hopefully) by matching the rest of the string.
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$htmlFullTag = '<(?:[^>=]*+(?>[^>=]*+=\s*+(?:"[^"]*"|\'[^\']*\'|[^\'">\s]*+))*+[^>=]*+>|.*+)|';
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$reg = '/' . $codefix . $scriptfix . $prefix . $htmlFullTag .
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'&[a-zA-Z#][a-z0-9]++;' . $marker . $htmlfix . '|\004$/s';
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}
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$startPos = 0;
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$sourceBlob = '';
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$literalBlob = '';
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// Guard against delimiter nulls in the input
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// (should never happen: see T159174)
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$text = str_replace( "\000", '', $text );
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$text = str_replace( "\004", '', $text );
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$markupMatches = null;
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$elementMatches = null;
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// We add a marker (\004) at the end of text, to ensure we always match the
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// entire text (Otherwise, pcre.backtrack_limit might cause silent failure)
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$textWithMarker = $text . "\004";
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while ( $startPos < strlen( $text ) ) {
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if ( preg_match( $reg, $textWithMarker, $markupMatches, PREG_OFFSET_CAPTURE, $startPos ) ) {
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$elementPos = $markupMatches[0][1];
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$element = $markupMatches[0][0];
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if ( $element === "\004" ) {
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// We hit the end.
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$elementPos = strlen( $text );
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$element = '';
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} elseif ( substr( $element, -1 ) === "\004" ) {
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// This can sometimes happen if we have
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// unclosed html tags. For example,
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// when converting a title attribute
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// during a recursive call that contains
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// a < e.g. <div title="<">.
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$element = substr( $element, 0, -1 );
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}
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} else {
|
|
// If we hit here, then Language Converter could be tricked
|
|
// into doing an XSS, so we refuse to translate.
|
|
// If expected input manages to reach this code path,
|
|
// we should consider it a bug.
|
|
$log = LoggerFactory::getInstance( 'languageconverter' );
|
|
$log->error( "Hit pcre.backtrack_limit in " . __METHOD__
|
|
. ". Disabling language conversion for this page.",
|
|
[
|
|
"method" => __METHOD__,
|
|
"variant" => $toVariant,
|
|
"startOfText" => substr( $text, 0, 500 )
|
|
]
|
|
);
|
|
return $text;
|
|
}
|
|
// Queue the part before the markup for translation in a batch
|
|
$sourceBlob .= substr( $text, $startPos, $elementPos - $startPos ) . "\000";
|
|
|
|
// Advance to the next position
|
|
$startPos = $elementPos + strlen( $element );
|
|
|
|
// Translate any alt or title attributes inside the matched element
|
|
if ( $element !== ''
|
|
&& preg_match( '/^(<[^>\s]*+)\s([^>]*+)(.*+)$/', $element, $elementMatches )
|
|
) {
|
|
// FIXME, this decodes entities, so if you have something
|
|
// like <div title="foo<bar"> the bar won't get
|
|
// translated since after entity decoding it looks like
|
|
// unclosed html and we call this method recursively
|
|
// on attributes.
|
|
$attrs = Sanitizer::decodeTagAttributes( $elementMatches[2] );
|
|
// Ensure self-closing tags stay self-closing.
|
|
$close = substr( $elementMatches[2], -1 ) === '/' ? ' /' : '';
|
|
$changed = false;
|
|
foreach ( [ 'title', 'alt' ] as $attrName ) {
|
|
if ( !isset( $attrs[$attrName] ) ) {
|
|
continue;
|
|
}
|
|
$attr = $attrs[$attrName];
|
|
// Don't convert URLs
|
|
if ( !str_contains( $attr, '://' ) ) {
|
|
$attr = $this->recursiveConvertTopLevel( $attr, $toVariant );
|
|
}
|
|
|
|
if ( $attr !== $attrs[$attrName] ) {
|
|
$attrs[$attrName] = $attr;
|
|
$changed = true;
|
|
}
|
|
}
|
|
if ( $changed ) {
|
|
// @phan-suppress-next-line SecurityCheck-DoubleEscaped Explained above with decodeTagAttributes
|
|
$element = $elementMatches[1] . Html::expandAttributes( $attrs ) .
|
|
$close . $elementMatches[3];
|
|
}
|
|
}
|
|
$literalBlob .= $element . "\000";
|
|
}
|
|
|
|
// Do the main translation batch
|
|
$translatedBlob = $this->translate( $sourceBlob, $toVariant );
|
|
|
|
// Put the output back together
|
|
$translatedIter = StringUtils::explode( "\000", $translatedBlob );
|
|
$literalIter = StringUtils::explode( "\000", $literalBlob );
|
|
$output = '';
|
|
while ( $translatedIter->valid() && $literalIter->valid() ) {
|
|
$output .= $translatedIter->current();
|
|
$output .= $literalIter->current();
|
|
$translatedIter->next();
|
|
$literalIter->next();
|
|
}
|
|
|
|
return $output;
|
|
}
|
|
|
|
public function translate( $text, $variant ) {
|
|
// If $text is empty or only includes spaces, do nothing
|
|
// Otherwise translate it
|
|
if ( trim( $text ) ) {
|
|
$this->loadTables();
|
|
$text = $this->mTables[$variant]->replace( $text );
|
|
}
|
|
return $text;
|
|
}
|
|
|
|
/**
|
|
* @param string $text Text to convert
|
|
* @param string $variant Variant language code
|
|
* @return string Translated text
|
|
*/
|
|
protected function translateWithoutRomanNumbers( $text, $variant ) {
|
|
$breaks = '[^\w\x80-\xff]';
|
|
|
|
// regexp for roman numbers
|
|
// Lookahead assertion ensures $roman doesn't match the empty string
|
|
$roman = '(?=[MDCLXVI])M{0,4}(C[DM]|D?C{0,3})(X[LC]|L?X{0,3})(I[VX]|V?I{0,3})';
|
|
|
|
$reg = '/^' . $roman . '$|^' . $roman . $breaks . '|' . $breaks
|
|
. $roman . '$|' . $breaks . $roman . $breaks . '/';
|
|
|
|
$matches = preg_split( $reg, $text, -1, PREG_SPLIT_OFFSET_CAPTURE );
|
|
|
|
$m = array_shift( $matches );
|
|
$this->loadTables();
|
|
if ( !isset( $this->mTables[$variant] ) ) {
|
|
throw new RuntimeException( "Broken variant table: "
|
|
. implode( ',', array_keys( $this->mTables ) ) );
|
|
}
|
|
$ret = $this->mTables[$variant]->replace( $m[0] );
|
|
$mstart = (int)$m[1] + strlen( $m[0] );
|
|
foreach ( $matches as $m ) {
|
|
$ret .= substr( $text, $mstart, (int)$m[1] - $mstart );
|
|
$ret .= $this->translate( $m[0], $variant );
|
|
$mstart = (int)$m[1] + strlen( $m[0] );
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
public function autoConvertToAllVariants( $text ) {
|
|
$this->loadTables();
|
|
|
|
$ret = [];
|
|
foreach ( $this->getVariants() as $variant ) {
|
|
$ret[$variant] = $this->translate( $text, $variant );
|
|
}
|
|
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Apply manual conversion rules.
|
|
*
|
|
* @param ConverterRule $convRule
|
|
*/
|
|
protected function applyManualConv( ConverterRule $convRule ) {
|
|
// Use syntax -{T|zh-cn:TitleCN; zh-tw:TitleTw}- to custom
|
|
// title conversion.
|
|
// T26072: $mConvRuleTitle was overwritten by other manual
|
|
// rule(s) not for title, this breaks the title conversion.
|
|
$newConvRuleTitle = $convRule->getTitle();
|
|
if ( $newConvRuleTitle !== false ) {
|
|
// So I add an empty check for getTitle()
|
|
$this->mConvRuleTitle = $newConvRuleTitle;
|
|
}
|
|
|
|
// merge/remove manual conversion rules to/from global table
|
|
$convTable = $convRule->getConvTable();
|
|
$action = $convRule->getRulesAction();
|
|
foreach ( $convTable as $variant => $pair ) {
|
|
$v = $this->validateVariant( $variant );
|
|
if ( !$v ) {
|
|
continue;
|
|
}
|
|
|
|
if ( $action == 'add' ) {
|
|
// More efficient than array_merge(), about 2.5 times.
|
|
foreach ( $pair as $from => $to ) {
|
|
$this->mTables[$v]->setPair( $from, $to );
|
|
}
|
|
} elseif ( $action == 'remove' ) {
|
|
$this->mTables[$v]->removeArray( $pair );
|
|
}
|
|
}
|
|
}
|
|
|
|
public function convertSplitTitle( $title ) {
|
|
$variant = $this->getPreferredVariant();
|
|
|
|
$index = $title->getNamespace();
|
|
$nsText = $this->convertNamespace( $index, $variant );
|
|
|
|
$name = str_replace( '_', ' ', $title->getDBKey() );
|
|
$mainText = $this->translate( $name, $variant );
|
|
|
|
return [ $nsText, ':', $mainText ];
|
|
}
|
|
|
|
public function convertTitle( $title ) {
|
|
[ $nsText, $nsSeparator, $mainText ] = $this->convertSplitTitle( $title );
|
|
return $nsText !== '' ?
|
|
$nsText . $nsSeparator . $mainText :
|
|
$mainText;
|
|
}
|
|
|
|
public function convertNamespace( $index, $variant = null ) {
|
|
if ( $index === NS_MAIN ) {
|
|
return '';
|
|
}
|
|
|
|
$variant ??= $this->getPreferredVariant();
|
|
|
|
$cache = MediaWikiServices::getInstance()->getLocalServerObjectCache();
|
|
$key = $cache->makeKey( 'languageconverter', 'namespace-text', $index, $variant );
|
|
return $cache->getWithSetCallback(
|
|
$key,
|
|
BagOStuff::TTL_MINUTE,
|
|
function () use ( $index, $variant ) {
|
|
return $this->computeNsVariantText( $index, $variant );
|
|
}
|
|
);
|
|
}
|
|
|
|
/**
|
|
* @param int $index
|
|
* @param string|null $variant
|
|
* @return string
|
|
*/
|
|
private function computeNsVariantText( int $index, ?string $variant ): string {
|
|
$nsVariantText = false;
|
|
|
|
// First check if a message gives a converted name in the target variant.
|
|
$nsConvMsg = wfMessage( 'conversion-ns' . $index )->inLanguage( $variant );
|
|
if ( $nsConvMsg->exists() ) {
|
|
$nsVariantText = $nsConvMsg->plain();
|
|
}
|
|
|
|
// Then check if a message gives a converted name in content language
|
|
// which needs extra translation to the target variant.
|
|
if ( $nsVariantText === false ) {
|
|
$nsConvMsg = wfMessage( 'conversion-ns' . $index )->inContentLanguage();
|
|
if ( $nsConvMsg->exists() ) {
|
|
$nsVariantText = $this->translate( $nsConvMsg->plain(), $variant );
|
|
}
|
|
}
|
|
|
|
if ( $nsVariantText === false ) {
|
|
// No message exists, retrieve it from the target variant's namespace names.
|
|
$mLangObj = MediaWikiServices::getInstance()
|
|
->getLanguageFactory()
|
|
->getLanguage( $variant );
|
|
$nsVariantText = $mLangObj->getFormattedNsText( $index );
|
|
}
|
|
return $nsVariantText;
|
|
}
|
|
|
|
public function convert( $text ) {
|
|
$variant = $this->getPreferredVariant();
|
|
return $this->convertTo( $text, $variant );
|
|
}
|
|
|
|
public function convertTo( $text, $variant, bool $clearState = true ) {
|
|
$languageConverterFactory = MediaWikiServices::getInstance()->getLanguageConverterFactory();
|
|
if ( $languageConverterFactory->isConversionDisabled() ) {
|
|
return $text;
|
|
}
|
|
// Reset converter state for a new converter run.
|
|
if ( $clearState ) {
|
|
$this->mConvRuleTitle = false;
|
|
}
|
|
return $this->recursiveConvertTopLevel( $text, $variant );
|
|
}
|
|
|
|
/**
|
|
* Recursively convert text on the outside. Allow to use nested
|
|
* markups to custom rules.
|
|
*
|
|
* @param string $text Text to be converted
|
|
* @param string $variant The target variant code
|
|
* @param int $depth Depth of recursion
|
|
* @return string Converted text
|
|
*/
|
|
protected function recursiveConvertTopLevel( $text, $variant, $depth = 0 ) {
|
|
$startPos = 0;
|
|
$out = '';
|
|
$length = strlen( $text );
|
|
$shouldConvert = !$this->guessVariant( $text, $variant );
|
|
$continue = true;
|
|
|
|
$noScript = '<script.*?>.*?<\/script>(*SKIP)(*FAIL)';
|
|
$noStyle = '<style.*?>.*?<\/style>(*SKIP)(*FAIL)';
|
|
// phpcs:ignore Generic.Files.LineLength
|
|
$noHtml = '<(?:[^>=]*+(?>[^>=]*+=\s*+(?:"[^"]*"|\'[^\']*\'|[^\'">\s]*+))*+[^>=]*+>|.*+)(*SKIP)(*FAIL)';
|
|
while ( $startPos < $length && $continue ) {
|
|
$continue = preg_match(
|
|
// Only match "-{" outside the html.
|
|
"/$noScript|$noStyle|$noHtml|-\{/",
|
|
$text,
|
|
$m,
|
|
PREG_OFFSET_CAPTURE,
|
|
$startPos
|
|
);
|
|
|
|
if ( !$continue ) {
|
|
// No more markup, append final segment
|
|
$fragment = substr( $text, $startPos );
|
|
$out .= $shouldConvert ? $this->autoConvert( $fragment, $variant ) : $fragment;
|
|
return $out;
|
|
}
|
|
|
|
// Offset of the match of the regex pattern.
|
|
$pos = $m[0][1];
|
|
|
|
// Append initial segment
|
|
$fragment = substr( $text, $startPos, $pos - $startPos );
|
|
$out .= $shouldConvert ? $this->autoConvert( $fragment, $variant ) : $fragment;
|
|
// -{ marker found, not in attribute
|
|
// Advance position up to -{ marker.
|
|
$startPos = $pos;
|
|
// Do recursive conversion
|
|
// Note: This passes $startPos by reference, and advances it.
|
|
$out .= $this->recursiveConvertRule( $text, $variant, $startPos, $depth + 1 );
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
/**
|
|
* Recursively convert text on the inside.
|
|
*
|
|
* @param string $text Text to be converted
|
|
* @param string $variant The target variant code
|
|
* @param int &$startPos
|
|
* @param int $depth Depth of recursion
|
|
* @return string Converted text
|
|
*/
|
|
protected function recursiveConvertRule( $text, $variant, &$startPos, $depth = 0 ) {
|
|
// Quick check (no function calls)
|
|
if ( $text[$startPos] !== '-' || $text[$startPos + 1] !== '{' ) {
|
|
throw new InvalidArgumentException( __METHOD__ . ': invalid input string' );
|
|
}
|
|
|
|
$startPos += 2;
|
|
$inner = '';
|
|
$warningDone = false;
|
|
$length = strlen( $text );
|
|
|
|
while ( $startPos < $length ) {
|
|
$m = false;
|
|
preg_match( '/-\{|\}-/', $text, $m, PREG_OFFSET_CAPTURE, $startPos );
|
|
if ( !$m ) {
|
|
// Unclosed rule
|
|
break;
|
|
}
|
|
|
|
$token = $m[0][0];
|
|
$pos = $m[0][1];
|
|
|
|
// Markup found
|
|
// Append initial segment
|
|
$inner .= substr( $text, $startPos, $pos - $startPos );
|
|
|
|
// Advance position
|
|
$startPos = $pos;
|
|
|
|
switch ( $token ) {
|
|
case '-{':
|
|
// Check max depth
|
|
if ( $depth >= $this->mMaxDepth ) {
|
|
$inner .= '-{';
|
|
if ( !$warningDone ) {
|
|
$inner .= '<span class="error">' .
|
|
wfMessage( 'language-converter-depth-warning' )
|
|
->numParams( $this->mMaxDepth )->inContentLanguage()->text() .
|
|
'</span>';
|
|
$warningDone = true;
|
|
}
|
|
$startPos += 2;
|
|
break;
|
|
}
|
|
// Recursively parse another rule
|
|
$inner .= $this->recursiveConvertRule( $text, $variant, $startPos, $depth + 1 );
|
|
break;
|
|
case '}-':
|
|
// Apply the rule
|
|
$startPos += 2;
|
|
$rule = new ConverterRule( $inner, $this );
|
|
$rule->parse( $variant );
|
|
$this->applyManualConv( $rule );
|
|
return $rule->getDisplay();
|
|
default:
|
|
throw new UnexpectedValueException( __METHOD__ . ': invalid regex match' );
|
|
}
|
|
}
|
|
|
|
// Unclosed rule
|
|
if ( $startPos < $length ) {
|
|
$inner .= substr( $text, $startPos );
|
|
}
|
|
$startPos = $length;
|
|
return '-{' . $this->autoConvert( $inner, $variant );
|
|
}
|
|
|
|
public function findVariantLink( &$link, &$nt, $ignoreOtherCond = false ) {
|
|
# If the article has already existed, there is no need to
|
|
# check it again. Otherwise it may cause a fault.
|
|
if ( $nt instanceof LinkTarget ) {
|
|
$nt = Title::castFromLinkTarget( $nt );
|
|
if ( $nt->exists() ) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
if ( $nt instanceof PageIdentity && $nt->exists() ) {
|
|
return;
|
|
}
|
|
|
|
$request = RequestContext::getMain()->getRequest();
|
|
|
|
$isredir = $request->getText( 'redirect', 'yes' );
|
|
$action = $request->getText( 'action' );
|
|
if ( $action == 'edit' && $request->getBool( 'redlink' ) ) {
|
|
$action = 'view';
|
|
}
|
|
$linkconvert = $request->getText( 'linkconvert', 'yes' );
|
|
$disableLinkConversion =
|
|
MediaWikiServices::getInstance()->getLanguageConverterFactory()
|
|
->isLinkConversionDisabled();
|
|
$linkBatchFactory = MediaWikiServices::getInstance()->getLinkBatchFactory();
|
|
$linkBatch = $linkBatchFactory->newLinkBatch();
|
|
|
|
$ns = NS_MAIN;
|
|
|
|
if ( $disableLinkConversion ||
|
|
( !$ignoreOtherCond &&
|
|
( $isredir == 'no'
|
|
|| $action == 'edit'
|
|
|| $action == 'submit'
|
|
|| $linkconvert == 'no' )
|
|
)
|
|
) {
|
|
return;
|
|
}
|
|
|
|
if ( is_object( $nt ) ) {
|
|
$ns = $nt->getNamespace();
|
|
}
|
|
|
|
$variants = $this->autoConvertToAllVariants( $link );
|
|
if ( !$variants ) { // give up
|
|
return;
|
|
}
|
|
|
|
$titles = [];
|
|
|
|
foreach ( $variants as $v ) {
|
|
if ( $v != $link ) {
|
|
$varnt = Title::newFromText( $v, $ns );
|
|
if ( $varnt !== null ) {
|
|
$linkBatch->addObj( $varnt );
|
|
$titles[] = $varnt;
|
|
}
|
|
}
|
|
}
|
|
|
|
// fetch all variants in single query
|
|
$linkBatch->execute();
|
|
|
|
foreach ( $titles as $varnt ) {
|
|
if ( $varnt->getArticleID() > 0 ) {
|
|
$nt = $varnt;
|
|
$link = $varnt->getText();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
public function getExtraHashOptions() {
|
|
$variant = $this->getPreferredVariant();
|
|
|
|
return '!' . $variant;
|
|
}
|
|
|
|
public function guessVariant( $text, $variant ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Load default conversion tables.
|
|
*
|
|
* @return array
|
|
*/
|
|
abstract protected function loadDefaultTables(): array;
|
|
|
|
/**
|
|
* Load conversion tables either from the cache or the disk.
|
|
* @private
|
|
* @param bool $fromCache Whether to load from cache. Defaults to true.
|
|
*/
|
|
protected function loadTables( $fromCache = true ) {
|
|
$services = MediaWikiServices::getInstance();
|
|
$languageConverterCacheType = $services
|
|
->getMainConfig()->get( MainConfigNames::LanguageConverterCacheType );
|
|
|
|
if ( $this->mTablesLoaded ) {
|
|
return;
|
|
}
|
|
|
|
$this->mTablesLoaded = true;
|
|
$cache = $services->getObjectCacheFactory()->getInstance( $languageConverterCacheType );
|
|
$cacheKey = $cache->makeKey(
|
|
'conversiontables', $this->getMainCode(),
|
|
md5( implode( ',', $this->getVariants() ) ), self::CACHE_VERSION_KEY
|
|
);
|
|
if ( !$fromCache ) {
|
|
$cache->delete( $cacheKey );
|
|
}
|
|
$this->mTables = $cache->getWithSetCallback( $cacheKey, $cache::TTL_HOUR * 12, function () {
|
|
// We will first load the default tables
|
|
// then update them using things in MediaWiki:Conversiontable/*
|
|
$tables = $this->loadDefaultTables();
|
|
foreach ( $this->getVariants() as $var ) {
|
|
$cached = $this->parseCachedTable( $var );
|
|
$tables[$var]->mergeArray( $cached );
|
|
}
|
|
|
|
$this->postLoadTables( $tables );
|
|
return $tables;
|
|
} );
|
|
}
|
|
|
|
/**
|
|
* Hook for post-processing after conversion tables are loaded.
|
|
*
|
|
* @param ReplacementArray[] &$tables
|
|
*/
|
|
protected function postLoadTables( &$tables ) {
|
|
}
|
|
|
|
/**
|
|
* Reload the conversion tables.
|
|
*
|
|
* Also used by test suites which need to reset the converter state.
|
|
*
|
|
* Called by ParserTestRunner with the help of TestingAccessWrapper
|
|
*/
|
|
private function reloadTables() {
|
|
if ( $this->mTables ) {
|
|
$this->mTables = [];
|
|
}
|
|
|
|
$this->mTablesLoaded = false;
|
|
$this->loadTables( false );
|
|
}
|
|
|
|
/**
|
|
* Parse the conversion table stored in the cache.
|
|
*
|
|
* The tables should be in blocks of the following form:
|
|
* -{
|
|
* word => word ;
|
|
* word => word ;
|
|
* ...
|
|
* }-
|
|
*
|
|
* To make the tables more manageable, subpages are allowed
|
|
* and will be parsed recursively if $recursive == true.
|
|
*
|
|
* @param string $code Language code
|
|
* @param string $subpage Subpage name
|
|
* @param bool $recursive Parse subpages recursively? Defaults to true.
|
|
*
|
|
* @return array
|
|
*/
|
|
private function parseCachedTable( $code, $subpage = '', $recursive = true ) {
|
|
static $parsed = [];
|
|
|
|
$key = 'Conversiontable/' . $code;
|
|
if ( $subpage ) {
|
|
$key .= '/' . $subpage;
|
|
}
|
|
if ( array_key_exists( $key, $parsed ) ) {
|
|
return [];
|
|
}
|
|
|
|
$parsed[$key] = true;
|
|
|
|
if ( $subpage === '' ) {
|
|
$messageCache = MediaWikiServices::getInstance()->getMessageCache();
|
|
$txt = $messageCache->getMsgFromNamespace( $key, $code );
|
|
} else {
|
|
$txt = false;
|
|
$title = Title::makeTitleSafe( NS_MEDIAWIKI, $key );
|
|
if ( $title && $title->exists() ) {
|
|
$revision = MediaWikiServices::getInstance()
|
|
->getRevisionLookup()
|
|
->getRevisionByTitle( $title );
|
|
if ( $revision ) {
|
|
$model = $revision->getSlot(
|
|
SlotRecord::MAIN,
|
|
RevisionRecord::RAW
|
|
)->getModel();
|
|
if ( $model == CONTENT_MODEL_WIKITEXT ) {
|
|
// @phan-suppress-next-line PhanUndeclaredMethod
|
|
$txt = $revision->getContent(
|
|
SlotRecord::MAIN,
|
|
RevisionRecord::RAW
|
|
)->getText();
|
|
}
|
|
|
|
// @todo in the future, use a specialized content model, perhaps based on json!
|
|
}
|
|
}
|
|
}
|
|
|
|
# Nothing to parse if there's no text
|
|
if ( $txt === false || $txt === null || $txt === '' ) {
|
|
return [];
|
|
}
|
|
|
|
// get all subpage links of the form
|
|
// [[MediaWiki:Conversiontable/zh-xx/...|...]]
|
|
$linkhead = $this->mLangObj->getNsText( NS_MEDIAWIKI ) .
|
|
':Conversiontable';
|
|
$subs = StringUtils::explode( '[[', $txt );
|
|
$sublinks = [];
|
|
foreach ( $subs as $sub ) {
|
|
$link = explode( ']]', $sub, 2 );
|
|
if ( count( $link ) != 2 ) {
|
|
continue;
|
|
}
|
|
$b = explode( '|', $link[0], 2 );
|
|
$b = explode( '/', trim( $b[0] ), 3 );
|
|
if ( count( $b ) == 3 ) {
|
|
$sublink = $b[2];
|
|
} else {
|
|
$sublink = '';
|
|
}
|
|
|
|
if ( $b[0] == $linkhead && $b[1] == $code ) {
|
|
$sublinks[] = $sublink;
|
|
}
|
|
}
|
|
|
|
// parse the mappings in this page
|
|
$blocks = StringUtils::explode( '-{', $txt );
|
|
$ret = [];
|
|
$first = true;
|
|
foreach ( $blocks as $block ) {
|
|
if ( $first ) {
|
|
// Skip the part before the first -{
|
|
$first = false;
|
|
continue;
|
|
}
|
|
$mappings = explode( '}-', $block, 2 )[0];
|
|
$stripped = str_replace( [ "'", '"', '*', '#' ], '', $mappings );
|
|
$table = StringUtils::explode( ';', $stripped );
|
|
foreach ( $table as $t ) {
|
|
$m = explode( '=>', $t, 3 );
|
|
if ( count( $m ) != 2 ) {
|
|
continue;
|
|
}
|
|
// trim any trailing comments starting with '//'
|
|
$tt = explode( '//', $m[1], 2 );
|
|
$ret[trim( $m[0] )] = trim( $tt[0] );
|
|
}
|
|
}
|
|
|
|
// recursively parse the subpages
|
|
if ( $recursive ) {
|
|
foreach ( $sublinks as $link ) {
|
|
$s = $this->parseCachedTable( $code, $link, $recursive );
|
|
$ret = $s + $ret;
|
|
}
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
public function markNoConversion( $text, $noParse = false ) {
|
|
# don't mark if already marked
|
|
if ( str_contains( $text, '-{' ) || str_contains( $text, '}-' ) ) {
|
|
return $text;
|
|
}
|
|
|
|
return "-{R|$text}-";
|
|
}
|
|
|
|
public function convertCategoryKey( $key ) {
|
|
return $key;
|
|
}
|
|
|
|
public function updateConversionTable( LinkTarget $linkTarget ) {
|
|
if ( $linkTarget->getNamespace() === NS_MEDIAWIKI ) {
|
|
$t = explode( '/', $linkTarget->getDBkey(), 3 );
|
|
$c = count( $t );
|
|
if ( $c > 1 && $t[0] == 'Conversiontable' && $this->validateVariant( $t[1] ) ) {
|
|
$this->reloadTables();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the cached separator pattern for ConverterRule::parseRules()
|
|
* @return string
|
|
*/
|
|
public function getVarSeparatorPattern() {
|
|
if ( $this->mVarSeparatorPattern === null ) {
|
|
// varsep_pattern for preg_split:
|
|
// The text should be split by ";" only if a valid variant
|
|
// name exists after the markup.
|
|
// For example
|
|
// -{zh-hans:<span style="font-size:120%;">xxx</span>;zh-hant:\
|
|
// <span style="font-size:120%;">yyy</span>;}-
|
|
// we should split it as:
|
|
// [
|
|
// [0] => 'zh-hans:<span style="font-size:120%;">xxx</span>'
|
|
// [1] => 'zh-hant:<span style="font-size:120%;">yyy</span>'
|
|
// [2] => ''
|
|
// ]
|
|
$expandedVariants = [];
|
|
foreach ( $this->getVariants() as $variant ) {
|
|
$expandedVariants[ $variant ] = 1;
|
|
// Accept standard BCP 47 names for variants as well.
|
|
$expandedVariants[ LanguageCode::bcp47( $variant ) ] = 1;
|
|
}
|
|
// Accept old deprecated names for variants
|
|
foreach ( LanguageCode::getDeprecatedCodeMapping() as $old => $new ) {
|
|
if ( isset( $expandedVariants[ $new ] ) ) {
|
|
$expandedVariants[ $old ] = 1;
|
|
}
|
|
}
|
|
$expandedVariants = implode( '|', array_keys( $expandedVariants ) );
|
|
|
|
$pat = '/;\s*(?=';
|
|
// zh-hans:xxx;zh-hant:yyy
|
|
$pat .= '(?:' . $expandedVariants . ')\s*:';
|
|
// xxx=>zh-hans:yyy; xxx=>zh-hant:zzz
|
|
$pat .= '|[^;]*?=>\s*(?:' . $expandedVariants . ')\s*:';
|
|
$pat .= '|\s*$)/';
|
|
$this->mVarSeparatorPattern = $pat;
|
|
}
|
|
return $this->mVarSeparatorPattern;
|
|
}
|
|
|
|
public function hasVariants() {
|
|
return count( $this->getVariants() ) > 1;
|
|
}
|
|
|
|
public function hasVariant( $variant ) {
|
|
return $variant && ( $variant === $this->validateVariant( $variant ) );
|
|
}
|
|
|
|
public function convertHtml( $text ) {
|
|
// @phan-suppress-next-line SecurityCheck-DoubleEscaped convert() is documented to return html
|
|
return htmlspecialchars( $this->convert( $text ) );
|
|
}
|
|
}
|
|
|
|
/** @deprecated class alias since 1.43 */
|
|
class_alias( LanguageConverter::class, 'LanguageConverter' );
|