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<?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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/** |
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* Parser for rules of language conversion , parse rules in -{ }- tag. |
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* @ingroup Language |
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* @author fdcn <[email protected]>, PhiLiP <[email protected]> |
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*/ |
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class ConverterRule { |
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public $mText; // original text in -{text}- |
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public $mConverter; // LanguageConverter object |
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public $mRuleDisplay = ''; |
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public $mRuleTitle = false; |
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public $mRules = '';// string : the text of the rules |
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public $mRulesAction = 'none'; |
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public $mFlags = []; |
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public $mVariantFlags = []; |
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public $mConvTable = []; |
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public $mBidtable = [];// array of the translation in each variant |
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public $mUnidtable = [];// array of the translation in each variant |
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/** |
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* Constructor |
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* |
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* @param string $text The text between -{ and }- |
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* @param LanguageConverter $converter |
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*/ |
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public function __construct( $text, $converter ) { |
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$this->mText = $text; |
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$this->mConverter = $converter; |
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} |
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/** |
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* Check if variants array in convert array. |
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* |
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* @param array|string $variants Variant language code |
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* @return string Translated text |
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*/ |
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public function getTextInBidtable( $variants ) { |
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$variants = (array)$variants; |
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if ( !$variants ) { |
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return false; |
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} |
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foreach ( $variants as $variant ) { |
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if ( isset( $this->mBidtable[$variant] ) ) { |
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return $this->mBidtable[$variant]; |
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} |
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} |
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return false; |
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} |
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/** |
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* Parse flags with syntax -{FLAG| ... }- |
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* @private |
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*/ |
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function parseFlags() { |
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$text = $this->mText; |
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$flags = []; |
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$variantFlags = []; |
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$sepPos = strpos( $text, '|' ); |
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if ( $sepPos !== false ) { |
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$validFlags = $this->mConverter->mFlags; |
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$f = StringUtils::explode( ';', substr( $text, 0, $sepPos ) ); |
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foreach ( $f as $ff ) { |
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$ff = trim( $ff ); |
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if ( isset( $validFlags[$ff] ) ) { |
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$flags[$validFlags[$ff]] = true; |
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} |
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} |
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$text = strval( substr( $text, $sepPos + 1 ) ); |
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} |
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if ( !$flags ) { |
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$flags['S'] = true; |
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} elseif ( isset( $flags['R'] ) ) { |
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$flags = [ 'R' => true ];// remove other flags |
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} elseif ( isset( $flags['N'] ) ) { |
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$flags = [ 'N' => true ];// remove other flags |
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} elseif ( isset( $flags['-'] ) ) { |
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$flags = [ '-' => true ];// remove other flags |
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} elseif ( count( $flags ) == 1 && isset( $flags['T'] ) ) { |
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$flags['H'] = true; |
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} elseif ( isset( $flags['H'] ) ) { |
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// replace A flag, and remove other flags except T |
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$temp = [ '+' => true, 'H' => true ]; |
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if ( isset( $flags['T'] ) ) { |
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$temp['T'] = true; |
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} |
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if ( isset( $flags['D'] ) ) { |
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$temp['D'] = true; |
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} |
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$flags = $temp; |
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} else { |
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if ( isset( $flags['A'] ) ) { |
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$flags['+'] = true; |
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$flags['S'] = true; |
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} |
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if ( isset( $flags['D'] ) ) { |
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unset( $flags['S'] ); |
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} |
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// try to find flags like "zh-hans", "zh-hant" |
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// allow syntaxes like "-{zh-hans;zh-hant|XXXX}-" |
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$variantFlags = array_intersect( array_keys( $flags ), $this->mConverter->mVariants ); |
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if ( $variantFlags ) { |
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$variantFlags = array_flip( $variantFlags ); |
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$flags = []; |
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} |
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} |
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$this->mVariantFlags = $variantFlags; |
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$this->mRules = $text; |
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$this->mFlags = $flags; |
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} |
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/** |
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* Generate conversion table. |
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* @private |
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*/ |
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function parseRules() { |
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$rules = $this->mRules; |
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$bidtable = []; |
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$unidtable = []; |
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$variants = $this->mConverter->mVariants; |
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$varsep_pattern = $this->mConverter->getVarSeparatorPattern(); |
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// Split according to $varsep_pattern, but ignore semicolons from HTML entities |
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$rules = preg_replace( '/(&[#a-zA-Z0-9]+);/', "$1\x01", $rules ); |
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$choice = preg_split( $varsep_pattern, $rules ); |
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$choice = str_replace( "\x01", ';', $choice ); |
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foreach ( $choice as $c ) { |
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$v = explode( ':', $c, 2 ); |
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if ( count( $v ) != 2 ) { |
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// syntax error, skip |
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continue; |
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} |
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$to = trim( $v[1] ); |
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$v = trim( $v[0] ); |
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$u = explode( '=>', $v, 2 ); |
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// if $to is empty (which is also used as $from in bidtable), |
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// strtr() could return a wrong result. |
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if ( count( $u ) == 1 && $to !== '' && in_array( $v, $variants ) ) { |
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$bidtable[$v] = $to; |
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} elseif ( count( $u ) == 2 ) { |
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$from = trim( $u[0] ); |
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$v = trim( $u[1] ); |
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// if $from is empty, strtr() could return a wrong result. |
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if ( array_key_exists( $v, $unidtable ) |
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&& !is_array( $unidtable[$v] ) |
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&& $from !== '' |
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&& in_array( $v, $variants ) ) { |
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$unidtable[$v] = [ $from => $to ]; |
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} elseif ( $from !== '' && in_array( $v, $variants ) ) { |
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$unidtable[$v][$from] = $to; |
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} |
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} |
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// syntax error, pass |
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if ( !isset( $this->mConverter->mVariantNames[$v] ) ) { |
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$bidtable = []; |
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$unidtable = []; |
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break; |
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} |
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} |
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$this->mBidtable = $bidtable; |
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$this->mUnidtable = $unidtable; |
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} |
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/** |
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* @private |
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* |
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* @return string |
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*/ |
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function getRulesDesc() { |
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$codesep = $this->mConverter->mDescCodeSep; |
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$varsep = $this->mConverter->mDescVarSep; |
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$text = ''; |
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foreach ( $this->mBidtable as $k => $v ) { |
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$text .= $this->mConverter->mVariantNames[$k] . "$codesep$v$varsep"; |
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} |
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foreach ( $this->mUnidtable as $k => $a ) { |
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foreach ( $a as $from => $to ) { |
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$text .= $from . '⇒' . $this->mConverter->mVariantNames[$k] . |
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"$codesep$to$varsep"; |
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} |
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} |
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return $text; |
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} |
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/** |
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* Parse rules conversion. |
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* @private |
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* |
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* @param string $variant |
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* |
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* @return string |
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*/ |
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function getRuleConvertedStr( $variant ) { |
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$bidtable = $this->mBidtable; |
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$unidtable = $this->mUnidtable; |
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if ( count( $bidtable ) + count( $unidtable ) == 0 ) { |
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return $this->mRules; |
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} else { |
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// display current variant in bidirectional array |
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$disp = $this->getTextInBidtable( $variant ); |
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// or display current variant in fallbacks |
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if ( $disp === false ) { |
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$disp = $this->getTextInBidtable( |
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$this->mConverter->getVariantFallbacks( $variant ) ); |
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} |
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// or display current variant in unidirectional array |
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if ( $disp === false && array_key_exists( $variant, $unidtable ) ) { |
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$disp = array_values( $unidtable[$variant] )[0]; |
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} |
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// or display frist text under disable manual convert |
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if ( $disp === false && $this->mConverter->mManualLevel[$variant] == 'disable' ) { |
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if ( count( $bidtable ) > 0 ) { |
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$disp = array_values( $bidtable )[0]; |
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} else { |
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$disp = array_values( array_values( $unidtable )[0] )[0]; |
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} |
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} |
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return $disp; |
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} |
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} |
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/** |
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* Similar to getRuleConvertedStr(), but this prefers to use original |
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* page title if $variant === $this->mConverter->mMainLanguageCode |
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* and may return false in this case (so this title conversion rule |
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* will be ignored and the original title is shown). |
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* |
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* @since 1.22 |
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* @param string $variant The variant code to display page title in |
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* @return string|bool The converted title or false if just page name |
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*/ |
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function getRuleConvertedTitle( $variant ) { |
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if ( $variant === $this->mConverter->mMainLanguageCode ) { |
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// If a string targeting exactly this variant is set, |
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// use it. Otherwise, just return false, so the real |
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// page name can be shown (and because variant === main, |
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// there'll be no further automatic conversion). |
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$disp = $this->getTextInBidtable( $variant ); |
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if ( $disp ) { |
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return $disp; |
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} |
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if ( array_key_exists( $variant, $this->mUnidtable ) ) { |
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$disp = array_values( $this->mUnidtable[$variant] )[0]; |
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} |
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// Assigned above or still false. |
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return $disp; |
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} else { |
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return $this->getRuleConvertedStr( $variant ); |
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} |
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} |
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/** |
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* Generate conversion table for all text. |
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* @private |
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*/ |
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function generateConvTable() { |
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// Special case optimisation |
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if ( !$this->mBidtable && !$this->mUnidtable ) { |
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$this->mConvTable = []; |
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return; |
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} |
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$bidtable = $this->mBidtable; |
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$unidtable = $this->mUnidtable; |
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$manLevel = $this->mConverter->mManualLevel; |
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$vmarked = []; |
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foreach ( $this->mConverter->mVariants as $v ) { |
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/* for bidirectional array |
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fill in the missing variants, if any, |
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with fallbacks */ |
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if ( !isset( $bidtable[$v] ) ) { |
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$variantFallbacks = |
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$this->mConverter->getVariantFallbacks( $v ); |
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$vf = $this->getTextInBidtable( $variantFallbacks ); |
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if ( $vf ) { |
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$bidtable[$v] = $vf; |
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} |
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} |
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if ( isset( $bidtable[$v] ) ) { |
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foreach ( $vmarked as $vo ) { |
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// use syntax: -{A|zh:WordZh;zh-tw:WordTw}- |
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// or -{H|zh:WordZh;zh-tw:WordTw}- |
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// or -{-|zh:WordZh;zh-tw:WordTw}- |
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// to introduce a custom mapping between |
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// words WordZh and WordTw in the whole text |
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View Code Duplication |
if ( $manLevel[$v] == 'bidirectional' ) { |
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$this->mConvTable[$v][$bidtable[$vo]] = $bidtable[$v]; |
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} |
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View Code Duplication |
if ( $manLevel[$vo] == 'bidirectional' ) { |
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$this->mConvTable[$vo][$bidtable[$v]] = $bidtable[$vo]; |
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} |
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} |
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$vmarked[] = $v; |
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} |
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/* for unidirectional array fill to convert tables */ |
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if ( ( $manLevel[$v] == 'bidirectional' || $manLevel[$v] == 'unidirectional' ) |
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&& isset( $unidtable[$v] ) |
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) { |
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if ( isset( $this->mConvTable[$v] ) ) { |
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$this->mConvTable[$v] = $unidtable[$v] + $this->mConvTable[$v]; |
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} else { |
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$this->mConvTable[$v] = $unidtable[$v]; |
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} |
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} |
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} |
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} |
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/** |
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* Parse rules and flags. |
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* @param string $variant Variant language code |
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*/ |
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public function parse( $variant = null ) { |
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if ( !$variant ) { |
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$variant = $this->mConverter->getPreferredVariant(); |
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} |
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$this->parseFlags(); |
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$flags = $this->mFlags; |
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|
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// convert to specified variant |
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// syntax: -{zh-hans;zh-hant[;...]|<text to convert>}- |
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if ( $this->mVariantFlags ) { |
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// check if current variant in flags |
349
|
|
|
if ( isset( $this->mVariantFlags[$variant] ) ) { |
350
|
|
|
// then convert <text to convert> to current language |
351
|
|
|
$this->mRules = $this->mConverter->autoConvert( $this->mRules, |
352
|
|
|
$variant ); |
353
|
|
|
} else { |
354
|
|
|
// if current variant no in flags, |
355
|
|
|
// then we check its fallback variants. |
356
|
|
|
$variantFallbacks = |
357
|
|
|
$this->mConverter->getVariantFallbacks( $variant ); |
358
|
|
|
if ( is_array( $variantFallbacks ) ) { |
359
|
|
|
foreach ( $variantFallbacks as $variantFallback ) { |
360
|
|
|
// if current variant's fallback exist in flags |
361
|
|
|
if ( isset( $this->mVariantFlags[$variantFallback] ) ) { |
362
|
|
|
// then convert <text to convert> to fallback language |
363
|
|
|
$this->mRules = |
364
|
|
|
$this->mConverter->autoConvert( $this->mRules, |
365
|
|
|
$variantFallback ); |
366
|
|
|
break; |
367
|
|
|
} |
368
|
|
|
} |
369
|
|
|
} |
370
|
|
|
} |
371
|
|
|
$this->mFlags = $flags = [ 'R' => true ]; |
372
|
|
|
} |
373
|
|
|
|
374
|
|
|
if ( !isset( $flags['R'] ) && !isset( $flags['N'] ) ) { |
375
|
|
|
// decode => HTML entities modified by Sanitizer::removeHTMLtags |
376
|
|
|
$this->mRules = str_replace( '=>', '=>', $this->mRules ); |
377
|
|
|
$this->parseRules(); |
378
|
|
|
} |
379
|
|
|
$rules = $this->mRules; |
380
|
|
|
|
381
|
|
|
if ( !$this->mBidtable && !$this->mUnidtable ) { |
382
|
|
|
if ( isset( $flags['+'] ) || isset( $flags['-'] ) ) { |
383
|
|
|
// fill all variants if text in -{A/H/-|text}- is non-empty but without rules |
384
|
|
|
if ( $rules !== '' ) { |
385
|
|
|
foreach ( $this->mConverter->mVariants as $v ) { |
386
|
|
|
$this->mBidtable[$v] = $rules; |
387
|
|
|
} |
388
|
|
|
} |
389
|
|
|
} elseif ( !isset( $flags['N'] ) && !isset( $flags['T'] ) ) { |
390
|
|
|
$this->mFlags = $flags = [ 'R' => true ]; |
391
|
|
|
} |
392
|
|
|
} |
393
|
|
|
|
394
|
|
|
$this->mRuleDisplay = false; |
|
|
|
|
395
|
|
|
foreach ( $flags as $flag => $unused ) { |
396
|
|
|
switch ( $flag ) { |
397
|
|
|
case 'R': |
398
|
|
|
// if we don't do content convert, still strip the -{}- tags |
399
|
|
|
$this->mRuleDisplay = $rules; |
400
|
|
|
break; |
401
|
|
|
case 'N': |
402
|
|
|
// process N flag: output current variant name |
403
|
|
|
$ruleVar = trim( $rules ); |
404
|
|
|
if ( isset( $this->mConverter->mVariantNames[$ruleVar] ) ) { |
405
|
|
|
$this->mRuleDisplay = $this->mConverter->mVariantNames[$ruleVar]; |
406
|
|
|
} else { |
407
|
|
|
$this->mRuleDisplay = ''; |
408
|
|
|
} |
409
|
|
|
break; |
410
|
|
|
case 'D': |
411
|
|
|
// process D flag: output rules description |
412
|
|
|
$this->mRuleDisplay = $this->getRulesDesc(); |
413
|
|
|
break; |
414
|
|
|
case 'H': |
415
|
|
|
// process H,- flag or T only: output nothing |
416
|
|
|
$this->mRuleDisplay = ''; |
417
|
|
|
break; |
418
|
|
|
case '-': |
419
|
|
|
$this->mRulesAction = 'remove'; |
420
|
|
|
$this->mRuleDisplay = ''; |
421
|
|
|
break; |
422
|
|
|
case '+': |
423
|
|
|
$this->mRulesAction = 'add'; |
424
|
|
|
$this->mRuleDisplay = ''; |
425
|
|
|
break; |
426
|
|
|
case 'S': |
427
|
|
|
$this->mRuleDisplay = $this->getRuleConvertedStr( $variant ); |
428
|
|
|
break; |
429
|
|
|
case 'T': |
430
|
|
|
$this->mRuleTitle = $this->getRuleConvertedTitle( $variant ); |
|
|
|
|
431
|
|
|
$this->mRuleDisplay = ''; |
432
|
|
|
break; |
433
|
|
|
default: |
434
|
|
|
// ignore unknown flags (but see error case below) |
435
|
|
|
} |
436
|
|
|
} |
437
|
|
|
if ( $this->mRuleDisplay === false ) { |
438
|
|
|
$this->mRuleDisplay = '<span class="error">' |
439
|
|
|
. wfMessage( 'converter-manual-rule-error' )->inContentLanguage()->escaped() |
440
|
|
|
. '</span>'; |
441
|
|
|
} |
442
|
|
|
|
443
|
|
|
$this->generateConvTable(); |
444
|
|
|
} |
445
|
|
|
|
446
|
|
|
/** |
447
|
|
|
* Checks if there are conversion rules. |
448
|
|
|
* @return bool |
449
|
|
|
*/ |
450
|
|
|
public function hasRules() { |
451
|
|
|
return $this->mRules !== ''; |
452
|
|
|
} |
453
|
|
|
|
454
|
|
|
/** |
455
|
|
|
* Get display text on markup -{...}- |
456
|
|
|
* @return string |
457
|
|
|
*/ |
458
|
|
|
public function getDisplay() { |
459
|
|
|
return $this->mRuleDisplay; |
460
|
|
|
} |
461
|
|
|
|
462
|
|
|
/** |
463
|
|
|
* Get converted title. |
464
|
|
|
* @return string |
465
|
|
|
*/ |
466
|
|
|
public function getTitle() { |
467
|
|
|
return $this->mRuleTitle; |
468
|
|
|
} |
469
|
|
|
|
470
|
|
|
/** |
471
|
|
|
* Return how deal with conversion rules. |
472
|
|
|
* @return string |
473
|
|
|
*/ |
474
|
|
|
public function getRulesAction() { |
475
|
|
|
return $this->mRulesAction; |
476
|
|
|
} |
477
|
|
|
|
478
|
|
|
/** |
479
|
|
|
* Get conversion table. (bidirectional and unidirectional |
480
|
|
|
* conversion table) |
481
|
|
|
* @return array |
482
|
|
|
*/ |
483
|
|
|
public function getConvTable() { |
484
|
|
|
return $this->mConvTable; |
485
|
|
|
} |
486
|
|
|
|
487
|
|
|
/** |
488
|
|
|
* Get conversion rules string. |
489
|
|
|
* @return string |
490
|
|
|
*/ |
491
|
|
|
public function getRules() { |
492
|
|
|
return $this->mRules; |
493
|
|
|
} |
494
|
|
|
|
495
|
|
|
/** |
496
|
|
|
* Get conversion flags. |
497
|
|
|
* @return array |
498
|
|
|
*/ |
499
|
|
|
public function getFlags() { |
500
|
|
|
return $this->mFlags; |
501
|
|
|
} |
502
|
|
|
} |
503
|
|
|
|
In PHP, under loose comparison (like
==
, or!=
, orswitch
conditions), values of different types might be equal.For
string
values, the empty string''
is a special case, in particular the following results might be unexpected: