LanguageConverterIcu.php

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<?php
abstract class LanguageConverterIcu extends LanguageConverterSpecific {
 
    protected $mTransliterators;
 
    protected function loadDefaultTables(): array {
        $tables = [];
        foreach ( $this->getVariants() as $variant ) {
            $tables[$variant] = new ReplacementArray();
        }
        return $tables;
    }
 
    public function translate( $text, $variant ) {
        $text = parent::translate( $text, $variant );
        if ( trim( $text ) ) {
            $text = $this->icuTranslate( $text, $variant );
        }
        return $text;
    }
 
    public function icuTranslate( $text, $variant ) {
        return $this->getTransliterators()[$variant]->transliterate( $text );
    }
 
    abstract protected function getIcuRules();
 
    protected function getTransliterators() {
        if ( $this->mTransliterators === null ) {
            $this->mTransliterators = [];
            foreach ( $this->getIcuRules() as $variant => $rule ) {
                $this->mTransliterators[$variant] = Transliterator::createFromRules( $rule );
            }
            foreach ( $this->getTransliteratorAliases() as $alias => $variant ) {
                $this->mTransliterators[$alias] = $this->mTransliterators[$variant];
            }
        }
        return $this->mTransliterators;
    }
 
    protected function getTransliteratorAliases() {
        return [];
    }
}