1162 lines
33 KiB
PHP
1162 lines
33 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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* @ingroup Language
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*/
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use MediaWiki\MediaWikiServices;
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use MediaWiki\Logger\LoggerFactory;
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/**
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* Base class for language conversion.
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* @ingroup Language
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*
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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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class LanguageConverter {
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/**
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* languages supporting variants
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* @since 1.20
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* @var array
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*/
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static public $languagesWithVariants = [
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'en',
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'crh',
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'gan',
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'iu',
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'kk',
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'ku',
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'shi',
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'sr',
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'tg',
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'uz',
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'zh',
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];
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public $mMainLanguageCode;
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/**
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* @var string[]
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*/
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public $mVariants;
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public $mVariantFallbacks;
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public $mVariantNames;
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public $mTablesLoaded = false;
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public $mTables;
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// 'bidirectional' 'unidirectional' 'disable' for each variant
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public $mManualLevel;
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public $mLangObj;
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public $mFlags;
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public $mDescCodeSep = ':', $mDescVarSep = ';';
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public $mUcfirst = false;
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public $mConvRuleTitle = false;
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public $mURLVariant;
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public $mUserVariant;
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public $mHeaderVariant;
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public $mMaxDepth = 10;
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public $mVarSeparatorPattern;
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const CACHE_VERSION_KEY = 'VERSION 7';
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/**
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* @param Language $langobj
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* @param string $maincode The main language code of this language
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* @param string[] $variants The supported variants of this language
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* @param array $variantfallbacks The fallback language of each variant
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* @param array $flags Defining the custom strings that maps to the flags
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* @param array $manualLevel Limit for supported variants
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*/
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public function __construct( $langobj, $maincode, $variants = [],
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$variantfallbacks = [], $flags = [],
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$manualLevel = [] ) {
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global $wgDisabledVariants;
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$this->mLangObj = $langobj;
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$this->mMainLanguageCode = $maincode;
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$this->mVariants = array_diff( $variants, $wgDisabledVariants );
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$this->mVariantFallbacks = $variantfallbacks;
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$this->mVariantNames = Language::fetchLanguageNames();
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$defaultflags = [
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// 'S' show converted text
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// '+' add rules for alltext
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// 'E' the gave flags is error
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// these flags above are reserved for program
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'A' => 'A', // add rule for convert code (all text convert)
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'T' => 'T', // title convert
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'R' => 'R', // raw content
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'D' => 'D', // convert description (subclass implement)
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'-' => '-', // remove convert (not implement)
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'H' => 'H', // add rule for convert code (but no display in placed code)
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'N' => 'N', // current variant name
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];
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$this->mFlags = array_merge( $defaultflags, $flags );
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foreach ( $this->mVariants as $v ) {
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if ( array_key_exists( $v, $manualLevel ) ) {
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$this->mManualLevel[$v] = $manualLevel[$v];
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} else {
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$this->mManualLevel[$v] = 'bidirectional';
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}
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$this->mFlags[$v] = $v;
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}
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}
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/**
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* Get all valid variants.
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* Call this instead of using $this->mVariants directly.
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*
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* @return string[] Contains all valid variants
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*/
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public function getVariants() {
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return $this->mVariants;
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}
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/**
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* In case some variant is not defined in the markup, we need
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* to have some fallback. For example, in zh, normally people
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* will define zh-hans and zh-hant, but less so for zh-sg or zh-hk.
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* when zh-sg is preferred but not defined, we will pick zh-hans
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* in this case. Right now this is only used by zh.
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*
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* @param string $variant The language code of the variant
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* @return string|array The code of the fallback language or the
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* main code if there is no fallback
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*/
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public function getVariantFallbacks( $variant ) {
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if ( isset( $this->mVariantFallbacks[$variant] ) ) {
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return $this->mVariantFallbacks[$variant];
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}
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return $this->mMainLanguageCode;
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}
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/**
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* Get the title produced by the conversion rule.
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* @return string The converted title text
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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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/**
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* Get preferred language variant.
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* @return string The preferred language code
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*/
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public function getPreferredVariant() {
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global $wgDefaultLanguageVariant, $wgUser;
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$req = $this->getURLVariant();
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Hooks::run( 'GetLangPreferredVariant', [ &$req ] );
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if ( $wgUser->isSafeToLoad() && $wgUser->isLoggedIn() && !$req ) {
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$req = $this->getUserVariant();
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} elseif ( !$req ) {
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$req = $this->getHeaderVariant();
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}
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if ( $wgDefaultLanguageVariant && !$req ) {
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$req = $this->validateVariant( $wgDefaultLanguageVariant );
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}
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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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if ( $this->validateVariant( $req ) ) {
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return $req;
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}
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return $this->mMainLanguageCode;
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}
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/**
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* Get default variant.
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* This function would not be affected by user's settings
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* @return string The default variant code
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*/
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public function getDefaultVariant() {
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global $wgDefaultLanguageVariant;
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$req = $this->getURLVariant();
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if ( !$req ) {
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$req = $this->getHeaderVariant();
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}
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if ( $wgDefaultLanguageVariant && !$req ) {
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$req = $this->validateVariant( $wgDefaultLanguageVariant );
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}
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if ( $req ) {
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return $req;
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}
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return $this->mMainLanguageCode;
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}
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/**
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* Validate the variant
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* @param string $variant The variant to validate
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* @return mixed Returns the variant if it is valid, null otherwise
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*/
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public function validateVariant( $variant = null ) {
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if ( $variant !== null && in_array( $variant, $this->mVariants ) ) {
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return $variant;
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}
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return null;
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}
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/**
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* Get the variant specified in the URL
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*
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* @return mixed Variant if one found, false otherwise.
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*/
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public function getURLVariant() {
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global $wgRequest;
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if ( $this->mURLVariant ) {
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return $this->mURLVariant;
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}
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// see if the preference is set in the request
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$ret = $wgRequest->getText( 'variant' );
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if ( !$ret ) {
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$ret = $wgRequest->getVal( 'uselang' );
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}
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$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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* @return mixed Variant if one found, false otherwise.
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*/
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protected function getUserVariant() {
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global $wgUser, $wgContLang;
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// memoizing this function wreaks havoc on parserTest.php
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/*
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if ( $this->mUserVariant ) {
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return $this->mUserVariant;
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}
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*/
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// Get language variant preference from logged in users
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// Don't call this on stub objects because that causes infinite
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// recursion during initialisation
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if ( !$wgUser->isSafeToLoad() ) {
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return false;
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}
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if ( $wgUser->isLoggedIn() ) {
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if ( $this->mMainLanguageCode == $wgContLang->getCode() ) {
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$ret = $wgUser->getOption( 'variant' );
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} else {
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$ret = $wgUser->getOption( 'variant-' . $this->mMainLanguageCode );
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}
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} else {
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// figure out user lang without constructing wgLang to avoid
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// infinite recursion
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$ret = $wgUser->getOption( 'language' );
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}
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$this->mUserVariant = $this->validateVariant( $ret );
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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 mixed Variant if one found, false otherwise.
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*/
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protected function getHeaderVariant() {
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global $wgRequest;
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if ( $this->mHeaderVariant ) {
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return $this->mHeaderVariant;
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}
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// see if some supported language variant is set in the
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// HTTP header.
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$languages = array_keys( $wgRequest->getAcceptLang() );
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if ( empty( $languages ) ) {
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return null;
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}
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$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 ( is_string( $fallbacks ) && $fallbacks !== $this->mMainLanguageCode ) {
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$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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/**
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* Dictionary-based conversion.
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* This function would not parse the conversion rules.
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* If you want to parse rules, try to use convert() or
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* convertTo().
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*
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* @param string $text The text to be converted
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* @param bool|string $toVariant The target language code
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* @return string The converted text
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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 $text;
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}
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/* we convert everything except:
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1. HTML markups (anything between < and >)
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2. HTML entities
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3. placeholders created by the parser
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IMPORTANT: Beware of failure from pcre.backtrack_limit (T124404).
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Minimize use of backtracking where possible.
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*/
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$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 possesively 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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$startPos = 0;
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$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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while ( $startPos < strlen( $text ) ) {
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if ( preg_match( $reg, $text . "\004", $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( $element, 0, -1 );
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}
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} else {
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// If we hit here, then Language Converter could be tricked
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// into doing an XSS, so we refuse to translate.
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// If non-crazy input manages to reach this code path,
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// we should consider it a bug.
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$log = LoggerFactory::getInstance( 'languageconverter' );
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$log->error( "Hit pcre.backtrack_limit in " . __METHOD__
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. ". Disabling language conversion for this page.",
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[
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"method" => __METHOD__,
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"variant" => $toVariant,
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"startOfText" => substr( $text, 0, 500 )
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]
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);
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return $text;
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}
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// Queue the part before the markup for translation in a batch
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$sourceBlob .= substr( $text, $startPos, $elementPos - $startPos ) . "\000";
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// Advance to the next position
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$startPos = $elementPos + strlen( $element );
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// Translate any alt or title attributes inside the matched element
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if ( $element !== ''
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&& preg_match( '/^(<[^>\s]*+)\s([^>]*+)(.*+)$/', $element, $elementMatches )
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) {
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// FIXME, this decodes entities, so if you have something
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// like <div title="foo<bar"> the bar won't get
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// translated since after entity decoding it looks like
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// unclosed html and we call this method recursively
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// on attributes.
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$attrs = Sanitizer::decodeTagAttributes( $elementMatches[2] );
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// Ensure self-closing tags stay self-closing.
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$close = substr( $elementMatches[2], -1 ) === '/' ? ' /' : '';
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$changed = false;
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foreach ( [ 'title', 'alt' ] as $attrName ) {
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if ( !isset( $attrs[$attrName] ) ) {
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continue;
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}
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$attr = $attrs[$attrName];
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// Don't convert URLs
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if ( !strpos( $attr, '://' ) ) {
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$attr = $this->recursiveConvertTopLevel( $attr, $toVariant );
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}
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if ( $attr !== $attrs[$attrName] ) {
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$attrs[$attrName] = $attr;
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$changed = true;
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}
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}
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if ( $changed ) {
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$element = $elementMatches[1] . Html::expandAttributes( $attrs ) .
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$close . $elementMatches[3];
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}
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}
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$literalBlob .= $element . "\000";
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}
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// Do the main translation batch
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$translatedBlob = $this->translate( $sourceBlob, $toVariant );
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// Put the output back together
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$translatedIter = StringUtils::explode( "\000", $translatedBlob );
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$literalIter = StringUtils::explode( "\000", $literalBlob );
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$output = '';
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while ( $translatedIter->valid() && $literalIter->valid() ) {
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$output .= $translatedIter->current();
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$output .= $literalIter->current();
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$translatedIter->next();
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$literalIter->next();
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}
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return $output;
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}
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/**
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* Translate a string to a variant.
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* Doesn't parse rules or do any of that other stuff, for that use
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* convert() or convertTo().
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*
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* @param string $text Text to convert
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* @param string $variant Variant language code
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* @return string Translated text
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*/
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public function translate( $text, $variant ) {
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// If $text is empty or only includes spaces, do nothing
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// Otherwise translate it
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if ( trim( $text ) ) {
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$this->loadTables();
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$text = $this->mTables[$variant]->replace( $text );
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}
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return $text;
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}
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/**
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* Call translate() to convert text to all valid variants.
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*
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* @param string $text The text to be converted
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* @return array Variant => converted text
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*/
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public function autoConvertToAllVariants( $text ) {
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$this->loadTables();
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$ret = [];
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foreach ( $this->mVariants as $variant ) {
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$ret[$variant] = $this->translate( $text, $variant );
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}
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|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Apply manual conversion rules.
|
|
*
|
|
* @param ConverterRule $convRule
|
|
*/
|
|
protected function applyManualConv( $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 ) {
|
|
// 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 => $pair ) {
|
|
if ( !$this->validateVariant( $variant ) ) {
|
|
continue;
|
|
}
|
|
|
|
if ( $action == 'add' ) {
|
|
// More efficient than array_merge(), about 2.5 times.
|
|
foreach ( $pair as $from => $to ) {
|
|
$this->mTables[$variant]->setPair( $from, $to );
|
|
}
|
|
} elseif ( $action == 'remove' ) {
|
|
$this->mTables[$variant]->removeArray( $pair );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Auto convert a Title object to a readable string in the
|
|
* preferred variant.
|
|
*
|
|
* @param Title $title A object of Title
|
|
* @return string Converted title text
|
|
*/
|
|
public function convertTitle( $title ) {
|
|
$variant = $this->getPreferredVariant();
|
|
$index = $title->getNamespace();
|
|
if ( $index !== NS_MAIN ) {
|
|
$text = $this->convertNamespace( $index, $variant ) . ':';
|
|
} else {
|
|
$text = '';
|
|
}
|
|
$text .= $this->translate( $title->getText(), $variant );
|
|
return $text;
|
|
}
|
|
|
|
/**
|
|
* Get the namespace display name in the preferred variant.
|
|
*
|
|
* @param int $index Namespace id
|
|
* @param string|null $variant Variant code or null for preferred variant
|
|
* @return string Namespace name for display
|
|
*/
|
|
public function convertNamespace( $index, $variant = null ) {
|
|
if ( $index === NS_MAIN ) {
|
|
return '';
|
|
}
|
|
|
|
if ( $variant === null ) {
|
|
$variant = $this->getPreferredVariant();
|
|
}
|
|
|
|
$cache = MediaWikiServices::getInstance()->getLocalServerObjectCache();
|
|
$key = $cache->makeKey( 'languageconverter', 'namespace-text', $index, $variant );
|
|
$nsVariantText = $cache->get( $key );
|
|
if ( $nsVariantText !== false ) {
|
|
return $nsVariantText;
|
|
}
|
|
|
|
// 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.
|
|
$langObj = $this->mLangObj->factory( $variant );
|
|
$nsVariantText = $langObj->getFormattedNsText( $index );
|
|
}
|
|
|
|
$cache->set( $key, $nsVariantText, 60 );
|
|
|
|
return $nsVariantText;
|
|
}
|
|
|
|
/**
|
|
* Convert text to different variants of a language. The automatic
|
|
* conversion is done in autoConvert(). Here we parse the text
|
|
* marked with -{}-, which specifies special conversions of the
|
|
* text that can not be accomplished in autoConvert().
|
|
*
|
|
* Syntax of the markup:
|
|
* -{code1:text1;code2:text2;...}- or
|
|
* -{flags|code1:text1;code2:text2;...}- or
|
|
* -{text}- in which case no conversion should take place for text
|
|
*
|
|
* @param string $text Text to be converted
|
|
* @return string Converted text
|
|
*/
|
|
public function convert( $text ) {
|
|
$variant = $this->getPreferredVariant();
|
|
return $this->convertTo( $text, $variant );
|
|
}
|
|
|
|
/**
|
|
* Same as convert() except a extra parameter to custom variant.
|
|
*
|
|
* @param string $text Text to be converted
|
|
* @param string $variant The target variant code
|
|
* @return string Converted text
|
|
*/
|
|
public function convertTo( $text, $variant ) {
|
|
global $wgDisableLangConversion;
|
|
if ( $wgDisableLangConversion ) {
|
|
return $text;
|
|
}
|
|
// Reset converter state for a new converter run.
|
|
$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 = 1;
|
|
|
|
$noScript = '<script.*?>.*?<\/script>(*SKIP)(*FAIL)';
|
|
$noStyle = '<style.*?>.*?<\/style>(*SKIP)(*FAIL)';
|
|
// phpcs:ignore Generic.Files.LineLength
|
|
$noHtml = '<(?:[^>=]*+(?>[^>=]*+=\s*+(?:"[^"]*"|\'[^\']*\'|[^\'">\s]*+))*+[^>=]*+>|.*+)(*SKIP)(*FAIL)';
|
|
while ( $startPos < $length && $continue ) {
|
|
$continue = preg_match(
|
|
// Only match -{ outside of html.
|
|
"/$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
|
|
*
|
|
* @throws MWException
|
|
* @return string Converted text
|
|
*/
|
|
protected function recursiveConvertRule( $text, $variant, &$startPos, $depth = 0 ) {
|
|
// Quick sanity check (no function calls)
|
|
if ( $text[$startPos] !== '-' || $text[$startPos + 1] !== '{' ) {
|
|
throw new MWException( __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;
|
|
continue;
|
|
}
|
|
// 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 MWException( __METHOD__ . ': invalid regex match' );
|
|
}
|
|
}
|
|
|
|
// Unclosed rule
|
|
if ( $startPos < $length ) {
|
|
$inner .= substr( $text, $startPos );
|
|
}
|
|
$startPos = $length;
|
|
return '-{' . $this->autoConvert( $inner, $variant );
|
|
}
|
|
|
|
/**
|
|
* If a language supports multiple variants, it is possible that
|
|
* non-existing link in one variant actually exists in another variant.
|
|
* This function tries to find it. See e.g. LanguageZh.php
|
|
* The input parameters may be modified upon return
|
|
*
|
|
* @param string &$link The name of the link
|
|
* @param Title &$nt The title object of the link
|
|
* @param bool $ignoreOtherCond To disable other conditions when
|
|
* we need to transclude a template or update a category's link
|
|
*/
|
|
public function findVariantLink( &$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 ( is_object( $nt ) && $nt->exists() ) {
|
|
return;
|
|
}
|
|
|
|
global $wgDisableLangConversion, $wgDisableTitleConversion, $wgRequest;
|
|
$isredir = $wgRequest->getText( 'redirect', 'yes' );
|
|
$action = $wgRequest->getText( 'action' );
|
|
if ( $action == 'edit' && $wgRequest->getBool( 'redlink' ) ) {
|
|
$action = 'view';
|
|
}
|
|
$linkconvert = $wgRequest->getText( 'linkconvert', 'yes' );
|
|
$disableLinkConversion = $wgDisableLangConversion
|
|
|| $wgDisableTitleConversion;
|
|
$linkBatch = new LinkBatch();
|
|
|
|
$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 ( !is_null( $varnt ) ) {
|
|
$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;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns language specific hash options.
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getExtraHashOptions() {
|
|
$variant = $this->getPreferredVariant();
|
|
|
|
return '!' . $variant;
|
|
}
|
|
|
|
/**
|
|
* Guess if a text is written in a variant. This should be implemented in subclasses.
|
|
*
|
|
* @param string $text The text to be checked
|
|
* @param string $variant Language code of the variant to be checked for
|
|
* @return bool True if $text appears to be written in $variant, false if not
|
|
*
|
|
* @author Nikola Smolenski <smolensk@eunet.rs>
|
|
* @since 1.19
|
|
*/
|
|
public function guessVariant( $text, $variant ) {
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Load default conversion tables.
|
|
* This method must be implemented in derived class.
|
|
*
|
|
* @private
|
|
* @throws MWException
|
|
*/
|
|
function loadDefaultTables() {
|
|
$class = static::class;
|
|
throw new MWException( "Must implement loadDefaultTables() method in class $class" );
|
|
}
|
|
|
|
/**
|
|
* Load conversion tables either from the cache or the disk.
|
|
* @private
|
|
* @param bool $fromCache Load from memcached? Defaults to true.
|
|
*/
|
|
function loadTables( $fromCache = true ) {
|
|
global $wgLanguageConverterCacheType;
|
|
|
|
if ( $this->mTablesLoaded ) {
|
|
return;
|
|
}
|
|
|
|
$this->mTablesLoaded = true;
|
|
$this->mTables = false;
|
|
$cache = ObjectCache::getInstance( $wgLanguageConverterCacheType );
|
|
$cacheKey = $cache->makeKey( 'conversiontables', $this->mMainLanguageCode );
|
|
if ( $fromCache ) {
|
|
$this->mTables = $cache->get( $cacheKey );
|
|
}
|
|
if ( !$this->mTables || !array_key_exists( self::CACHE_VERSION_KEY, $this->mTables ) ) {
|
|
// not in cache, or we need a fresh reload.
|
|
// We will first load the default tables
|
|
// then update them using things in MediaWiki:Conversiontable/*
|
|
$this->loadDefaultTables();
|
|
foreach ( $this->mVariants as $var ) {
|
|
$cached = $this->parseCachedTable( $var );
|
|
$this->mTables[$var]->mergeArray( $cached );
|
|
}
|
|
|
|
$this->postLoadTables();
|
|
$this->mTables[self::CACHE_VERSION_KEY] = true;
|
|
|
|
$cache->set( $cacheKey, $this->mTables, 43200 );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Hook for post processing after conversion tables are loaded.
|
|
*/
|
|
function postLoadTables() {
|
|
}
|
|
|
|
/**
|
|
* Reload the conversion tables.
|
|
*
|
|
* Also used by test suites which need to reset the converter state.
|
|
*
|
|
* @private
|
|
*/
|
|
private function reloadTables() {
|
|
if ( $this->mTables ) {
|
|
unset( $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
|
|
*/
|
|
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 === '' ) {
|
|
$txt = MessageCache::singleton()->getMsgFromNamespace( $key, $code );
|
|
} else {
|
|
$txt = false;
|
|
$title = Title::makeTitleSafe( NS_MEDIAWIKI, $key );
|
|
if ( $title && $title->exists() ) {
|
|
$revision = Revision::newFromTitle( $title );
|
|
if ( $revision ) {
|
|
if ( $revision->getContentModel() == CONTENT_MODEL_WIKITEXT ) {
|
|
$txt = $revision->getContent( Revision::RAW )->getNativeData();
|
|
}
|
|
|
|
// @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 trailling 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;
|
|
}
|
|
}
|
|
|
|
if ( $this->mUcfirst ) {
|
|
foreach ( $ret as $k => $v ) {
|
|
$ret[$this->mLangObj->ucfirst( $k )] = $this->mLangObj->ucfirst( $v );
|
|
}
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Enclose a string with the "no conversion" tag. This is used by
|
|
* various functions in the Parser.
|
|
*
|
|
* @param string $text Text to be tagged for no conversion
|
|
* @param bool $noParse Unused
|
|
* @return string The tagged text
|
|
*/
|
|
public function markNoConversion( $text, $noParse = false ) {
|
|
# don't mark if already marked
|
|
if ( strpos( $text, '-{' ) || strpos( $text, '}-' ) ) {
|
|
return $text;
|
|
}
|
|
|
|
$ret = "-{R|$text}-";
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* Convert the sorting key for category links. This should make different
|
|
* keys that are variants of each other map to the same key.
|
|
*
|
|
* @param string $key
|
|
*
|
|
* @return string
|
|
*/
|
|
function convertCategoryKey( $key ) {
|
|
return $key;
|
|
}
|
|
|
|
/**
|
|
* Refresh the cache of conversion tables when
|
|
* MediaWiki:Conversiontable* is updated.
|
|
*
|
|
* @param Title $titleobj The Title of the page being updated
|
|
*/
|
|
public function updateConversionTable( Title $titleobj ) {
|
|
if ( $titleobj->getNamespace() == NS_MEDIAWIKI ) {
|
|
$title = $titleobj->getDBkey();
|
|
$t = explode( '/', $title, 3 );
|
|
$c = count( $t );
|
|
if ( $c > 1 && $t[0] == 'Conversiontable' ) {
|
|
if ( $this->validateVariant( $t[1] ) ) {
|
|
$this->reloadTables();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get the cached separator pattern for ConverterRule::parseRules()
|
|
* @return string
|
|
*/
|
|
function getVarSeparatorPattern() {
|
|
if ( is_null( $this->mVarSeparatorPattern ) ) {
|
|
// varsep_pattern for preg_split:
|
|
// text should be splited by ";" only if a valid variant
|
|
// name exist 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] => ''
|
|
// ]
|
|
$pat = '/;\s*(?=';
|
|
foreach ( $this->mVariants as $variant ) {
|
|
// zh-hans:xxx;zh-hant:yyy
|
|
$pat .= $variant . '\s*:|';
|
|
// xxx=>zh-hans:yyy; xxx=>zh-hant:zzz
|
|
$pat .= '[^;]*?=>\s*' . $variant . '\s*:|';
|
|
}
|
|
$pat .= '\s*$)/';
|
|
$this->mVarSeparatorPattern = $pat;
|
|
}
|
|
return $this->mVarSeparatorPattern;
|
|
}
|
|
}
|