LanguageEn.php

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<?php
class EnConverter extends LanguageConverter {
    function loadDefaultTables() {
        $this->mTables = [
            'en' => new ReplacementArray(),
            'en-x-piglatin' => new ReplacementArray(),
        ];
    }
 
    function translate( $text, $toVariant ) {
        if ( $toVariant === 'en-x-piglatin' ) {
            // Only process words composed of standard English alphabet, leave the rest unchanged.
            // This skips some English words like 'naïve' or 'résumé', but we can live with that.
            // Ignore single letters and words which aren't lowercase or uppercase-first.
            return preg_replace_callback( '/[A-Za-z][a-z\']+/', function ( $matches ) {
                $word = $matches[0];
                if ( preg_match( '/^[aeiou]/i', $word ) ) {
                    return $word . 'way';
                } else {
                    return preg_replace_callback( '/^(s?qu|[^aeiou][^aeiouy]*)(.*)$/i', function ( $m ) {
                        $ucfirst = strtoupper( $m[1][0] ) === $m[1][0];
                        if ( $ucfirst ) {
                            return ucfirst( $m[2] ) . lcfirst( $m[1] ) . 'ay';
                        } else {
                            return $m[2] . $m[1] . 'ay';
                        }
                    }, $word );
                }
            }, $text );
        } else {
            return $text;
        }
    }
}
 
class LanguageEn extends Language {
    function __construct() {
        global $wgUsePigLatinVariant, $wgHooks;
 
        parent::__construct();
 
        if ( $wgUsePigLatinVariant ) {
            $this->mConverter = new EnConverter( $this, 'en', [ 'en', 'en-x-piglatin' ] );
            $wgHooks['PageContentSaveComplete'][] = $this->mConverter;
        }
    }
}