--- /dev/null
+<?php
+/**
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Language
+ */
+
+/**
+ * Parser for rules of language conversion , parse rules in -{ }- tag.
+ * @ingroup Language
+ * @author fdcn <fdcn64@gmail.com>, PhiLiP <philip.npc@gmail.com>
+ */
+class ConverterRule {
+ public $mText; // original text in -{text}-
+ public $mConverter; // LanguageConverter object
+ public $mRuleDisplay = '';
+ public $mRuleTitle = false;
+ public $mRules = '';// string : the text of the rules
+ public $mRulesAction = 'none';
+ public $mFlags = [];
+ public $mVariantFlags = [];
+ public $mConvTable = [];
+ public $mBidtable = [];// array of the translation in each variant
+ public $mUnidtable = [];// array of the translation in each variant
+
+ /**
+ * @param string $text The text between -{ and }-
+ * @param LanguageConverter $converter
+ */
+ public function __construct( $text, $converter ) {
+ $this->mText = $text;
+ $this->mConverter = $converter;
+ }
+
+ /**
+ * Check if variants array in convert array.
+ *
+ * @param array|string $variants Variant language code
+ * @return string Translated text
+ */
+ public function getTextInBidtable( $variants ) {
+ $variants = (array)$variants;
+ if ( !$variants ) {
+ return false;
+ }
+ foreach ( $variants as $variant ) {
+ if ( isset( $this->mBidtable[$variant] ) ) {
+ return $this->mBidtable[$variant];
+ }
+ }
+ return false;
+ }
+
+ /**
+ * Parse flags with syntax -{FLAG| ... }-
+ * @private
+ */
+ function parseFlags() {
+ $text = $this->mText;
+ $flags = [];
+ $variantFlags = [];
+
+ $sepPos = strpos( $text, '|' );
+ if ( $sepPos !== false ) {
+ $validFlags = $this->mConverter->mFlags;
+ $f = StringUtils::explode( ';', substr( $text, 0, $sepPos ) );
+ foreach ( $f as $ff ) {
+ $ff = trim( $ff );
+ if ( isset( $validFlags[$ff] ) ) {
+ $flags[$validFlags[$ff]] = true;
+ }
+ }
+ $text = strval( substr( $text, $sepPos + 1 ) );
+ }
+
+ if ( !$flags ) {
+ $flags['S'] = true;
+ } elseif ( isset( $flags['R'] ) ) {
+ $flags = [ 'R' => true ];// remove other flags
+ } elseif ( isset( $flags['N'] ) ) {
+ $flags = [ 'N' => true ];// remove other flags
+ } elseif ( isset( $flags['-'] ) ) {
+ $flags = [ '-' => true ];// remove other flags
+ } elseif ( count( $flags ) == 1 && isset( $flags['T'] ) ) {
+ $flags['H'] = true;
+ } elseif ( isset( $flags['H'] ) ) {
+ // replace A flag, and remove other flags except T
+ $temp = [ '+' => true, 'H' => true ];
+ if ( isset( $flags['T'] ) ) {
+ $temp['T'] = true;
+ }
+ if ( isset( $flags['D'] ) ) {
+ $temp['D'] = true;
+ }
+ $flags = $temp;
+ } else {
+ if ( isset( $flags['A'] ) ) {
+ $flags['+'] = true;
+ $flags['S'] = true;
+ }
+ if ( isset( $flags['D'] ) ) {
+ unset( $flags['S'] );
+ }
+ // try to find flags like "zh-hans", "zh-hant"
+ // allow syntaxes like "-{zh-hans;zh-hant|XXXX}-"
+ $variantFlags = array_intersect( array_keys( $flags ), $this->mConverter->mVariants );
+ if ( $variantFlags ) {
+ $variantFlags = array_flip( $variantFlags );
+ $flags = [];
+ }
+ }
+ $this->mVariantFlags = $variantFlags;
+ $this->mRules = $text;
+ $this->mFlags = $flags;
+ }
+
+ /**
+ * Generate conversion table.
+ * @private
+ */
+ function parseRules() {
+ $rules = $this->mRules;
+ $bidtable = [];
+ $unidtable = [];
+ $variants = $this->mConverter->mVariants;
+ $varsep_pattern = $this->mConverter->getVarSeparatorPattern();
+
+ // Split according to $varsep_pattern, but ignore semicolons from HTML entities
+ $rules = preg_replace( '/(&[#a-zA-Z0-9]+);/', "$1\x01", $rules );
+ $choice = preg_split( $varsep_pattern, $rules );
+ $choice = str_replace( "\x01", ';', $choice );
+
+ foreach ( $choice as $c ) {
+ $v = explode( ':', $c, 2 );
+ if ( count( $v ) != 2 ) {
+ // syntax error, skip
+ continue;
+ }
+ $to = trim( $v[1] );
+ $v = trim( $v[0] );
+ $u = explode( '=>', $v, 2 );
+ // if $to is empty (which is also used as $from in bidtable),
+ // strtr() could return a wrong result.
+ if ( count( $u ) == 1 && $to !== '' && in_array( $v, $variants ) ) {
+ $bidtable[$v] = $to;
+ } elseif ( count( $u ) == 2 ) {
+ $from = trim( $u[0] );
+ $v = trim( $u[1] );
+ // if $from is empty, strtr() could return a wrong result.
+ if ( array_key_exists( $v, $unidtable )
+ && !is_array( $unidtable[$v] )
+ && $from !== ''
+ && in_array( $v, $variants ) ) {
+ $unidtable[$v] = [ $from => $to ];
+ } elseif ( $from !== '' && in_array( $v, $variants ) ) {
+ $unidtable[$v][$from] = $to;
+ }
+ }
+ // syntax error, pass
+ if ( !isset( $this->mConverter->mVariantNames[$v] ) ) {
+ $bidtable = [];
+ $unidtable = [];
+ break;
+ }
+ }
+ $this->mBidtable = $bidtable;
+ $this->mUnidtable = $unidtable;
+ }
+
+ /**
+ * @private
+ *
+ * @return string
+ */
+ function getRulesDesc() {
+ $codesep = $this->mConverter->mDescCodeSep;
+ $varsep = $this->mConverter->mDescVarSep;
+ $text = '';
+ foreach ( $this->mBidtable as $k => $v ) {
+ $text .= $this->mConverter->mVariantNames[$k] . "$codesep$v$varsep";
+ }
+ foreach ( $this->mUnidtable as $k => $a ) {
+ foreach ( $a as $from => $to ) {
+ $text .= $from . '⇒' . $this->mConverter->mVariantNames[$k] .
+ "$codesep$to$varsep";
+ }
+ }
+ return $text;
+ }
+
+ /**
+ * Parse rules conversion.
+ * @private
+ *
+ * @param string $variant
+ *
+ * @return string
+ */
+ function getRuleConvertedStr( $variant ) {
+ $bidtable = $this->mBidtable;
+ $unidtable = $this->mUnidtable;
+
+ if ( count( $bidtable ) + count( $unidtable ) == 0 ) {
+ return $this->mRules;
+ } else {
+ // display current variant in bidirectional array
+ $disp = $this->getTextInBidtable( $variant );
+ // or display current variant in fallbacks
+ if ( $disp === false ) {
+ $disp = $this->getTextInBidtable(
+ $this->mConverter->getVariantFallbacks( $variant ) );
+ }
+ // or display current variant in unidirectional array
+ if ( $disp === false && array_key_exists( $variant, $unidtable ) ) {
+ $disp = array_values( $unidtable[$variant] )[0];
+ }
+ // or display first text under disable manual convert
+ if ( $disp === false && $this->mConverter->mManualLevel[$variant] == 'disable' ) {
+ if ( count( $bidtable ) > 0 ) {
+ $disp = array_values( $bidtable )[0];
+ } else {
+ $disp = array_values( array_values( $unidtable )[0] )[0];
+ }
+ }
+ return $disp;
+ }
+ }
+
+ /**
+ * Similar to getRuleConvertedStr(), but this prefers to use original
+ * page title if $variant === $this->mConverter->mMainLanguageCode
+ * and may return false in this case (so this title conversion rule
+ * will be ignored and the original title is shown).
+ *
+ * @since 1.22
+ * @param string $variant The variant code to display page title in
+ * @return string|bool The converted title or false if just page name
+ */
+ function getRuleConvertedTitle( $variant ) {
+ if ( $variant === $this->mConverter->mMainLanguageCode ) {
+ // If a string targeting exactly this variant is set,
+ // use it. Otherwise, just return false, so the real
+ // page name can be shown (and because variant === main,
+ // there'll be no further automatic conversion).
+ $disp = $this->getTextInBidtable( $variant );
+ if ( $disp ) {
+ return $disp;
+ }
+ if ( array_key_exists( $variant, $this->mUnidtable ) ) {
+ $disp = array_values( $this->mUnidtable[$variant] )[0];
+ }
+ // Assigned above or still false.
+ return $disp;
+ } else {
+ return $this->getRuleConvertedStr( $variant );
+ }
+ }
+
+ /**
+ * Generate conversion table for all text.
+ * @private
+ */
+ function generateConvTable() {
+ // Special case optimisation
+ if ( !$this->mBidtable && !$this->mUnidtable ) {
+ $this->mConvTable = [];
+ return;
+ }
+
+ $bidtable = $this->mBidtable;
+ $unidtable = $this->mUnidtable;
+ $manLevel = $this->mConverter->mManualLevel;
+
+ $vmarked = [];
+ foreach ( $this->mConverter->mVariants as $v ) {
+ /* for bidirectional array
+ fill in the missing variants, if any,
+ with fallbacks */
+ if ( !isset( $bidtable[$v] ) ) {
+ $variantFallbacks =
+ $this->mConverter->getVariantFallbacks( $v );
+ $vf = $this->getTextInBidtable( $variantFallbacks );
+ if ( $vf ) {
+ $bidtable[$v] = $vf;
+ }
+ }
+
+ if ( isset( $bidtable[$v] ) ) {
+ foreach ( $vmarked as $vo ) {
+ // use syntax: -{A|zh:WordZh;zh-tw:WordTw}-
+ // or -{H|zh:WordZh;zh-tw:WordTw}-
+ // or -{-|zh:WordZh;zh-tw:WordTw}-
+ // to introduce a custom mapping between
+ // words WordZh and WordTw in the whole text
+ if ( $manLevel[$v] == 'bidirectional' ) {
+ $this->mConvTable[$v][$bidtable[$vo]] = $bidtable[$v];
+ }
+ if ( $manLevel[$vo] == 'bidirectional' ) {
+ $this->mConvTable[$vo][$bidtable[$v]] = $bidtable[$vo];
+ }
+ }
+ $vmarked[] = $v;
+ }
+ /* for unidirectional array fill to convert tables */
+ if ( ( $manLevel[$v] == 'bidirectional' || $manLevel[$v] == 'unidirectional' )
+ && isset( $unidtable[$v] )
+ ) {
+ if ( isset( $this->mConvTable[$v] ) ) {
+ $this->mConvTable[$v] = $unidtable[$v] + $this->mConvTable[$v];
+ } else {
+ $this->mConvTable[$v] = $unidtable[$v];
+ }
+ }
+ }
+ }
+
+ /**
+ * Parse rules and flags.
+ * @param string $variant Variant language code
+ */
+ public function parse( $variant = null ) {
+ if ( !$variant ) {
+ $variant = $this->mConverter->getPreferredVariant();
+ }
+
+ $this->parseFlags();
+ $flags = $this->mFlags;
+
+ // convert to specified variant
+ // syntax: -{zh-hans;zh-hant[;...]|<text to convert>}-
+ if ( $this->mVariantFlags ) {
+ // check if current variant in flags
+ if ( isset( $this->mVariantFlags[$variant] ) ) {
+ // then convert <text to convert> to current language
+ $this->mRules = $this->mConverter->autoConvert( $this->mRules,
+ $variant );
+ } else {
+ // if current variant no in flags,
+ // then we check its fallback variants.
+ $variantFallbacks =
+ $this->mConverter->getVariantFallbacks( $variant );
+ if ( is_array( $variantFallbacks ) ) {
+ foreach ( $variantFallbacks as $variantFallback ) {
+ // if current variant's fallback exist in flags
+ if ( isset( $this->mVariantFlags[$variantFallback] ) ) {
+ // then convert <text to convert> to fallback language
+ $this->mRules =
+ $this->mConverter->autoConvert( $this->mRules,
+ $variantFallback );
+ break;
+ }
+ }
+ }
+ }
+ $this->mFlags = $flags = [ 'R' => true ];
+ }
+
+ if ( !isset( $flags['R'] ) && !isset( $flags['N'] ) ) {
+ // decode => HTML entities modified by Sanitizer::removeHTMLtags
+ $this->mRules = str_replace( '=>', '=>', $this->mRules );
+ $this->parseRules();
+ }
+ $rules = $this->mRules;
+
+ if ( !$this->mBidtable && !$this->mUnidtable ) {
+ if ( isset( $flags['+'] ) || isset( $flags['-'] ) ) {
+ // fill all variants if text in -{A/H/-|text}- is non-empty but without rules
+ if ( $rules !== '' ) {
+ foreach ( $this->mConverter->mVariants as $v ) {
+ $this->mBidtable[$v] = $rules;
+ }
+ }
+ } elseif ( !isset( $flags['N'] ) && !isset( $flags['T'] ) ) {
+ $this->mFlags = $flags = [ 'R' => true ];
+ }
+ }
+
+ $this->mRuleDisplay = false;
+ foreach ( $flags as $flag => $unused ) {
+ switch ( $flag ) {
+ case 'R':
+ // if we don't do content convert, still strip the -{}- tags
+ $this->mRuleDisplay = $rules;
+ break;
+ case 'N':
+ // process N flag: output current variant name
+ $ruleVar = trim( $rules );
+ if ( isset( $this->mConverter->mVariantNames[$ruleVar] ) ) {
+ $this->mRuleDisplay = $this->mConverter->mVariantNames[$ruleVar];
+ } else {
+ $this->mRuleDisplay = '';
+ }
+ break;
+ case 'D':
+ // process D flag: output rules description
+ $this->mRuleDisplay = $this->getRulesDesc();
+ break;
+ case 'H':
+ // process H,- flag or T only: output nothing
+ $this->mRuleDisplay = '';
+ break;
+ case '-':
+ $this->mRulesAction = 'remove';
+ $this->mRuleDisplay = '';
+ break;
+ case '+':
+ $this->mRulesAction = 'add';
+ $this->mRuleDisplay = '';
+ break;
+ case 'S':
+ $this->mRuleDisplay = $this->getRuleConvertedStr( $variant );
+ break;
+ case 'T':
+ $this->mRuleTitle = $this->getRuleConvertedTitle( $variant );
+ $this->mRuleDisplay = '';
+ break;
+ default:
+ // ignore unknown flags (but see error case below)
+ }
+ }
+ if ( $this->mRuleDisplay === false ) {
+ $this->mRuleDisplay = '<span class="error">'
+ . wfMessage( 'converter-manual-rule-error' )->inContentLanguage()->escaped()
+ . '</span>';
+ }
+
+ $this->generateConvTable();
+ }
+
+ /**
+ * Checks if there are conversion rules.
+ * @return bool
+ */
+ public function hasRules() {
+ return $this->mRules !== '';
+ }
+
+ /**
+ * Get display text on markup -{...}-
+ * @return string
+ */
+ public function getDisplay() {
+ return $this->mRuleDisplay;
+ }
+
+ /**
+ * Get converted title.
+ * @return string
+ */
+ public function getTitle() {
+ return $this->mRuleTitle;
+ }
+
+ /**
+ * Return how deal with conversion rules.
+ * @return string
+ */
+ public function getRulesAction() {
+ return $this->mRulesAction;
+ }
+
+ /**
+ * Get conversion table. (bidirectional and unidirectional
+ * conversion table)
+ * @return array
+ */
+ public function getConvTable() {
+ return $this->mConvTable;
+ }
+
+ /**
+ * Get conversion rules string.
+ * @return string
+ */
+ public function getRules() {
+ return $this->mRules;
+ }
+
+ /**
+ * Get conversion flags.
+ * @return array
+ */
+ public function getFlags() {
+ return $this->mFlags;
+ }
+}
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