PHPReader.php

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<?php
namespace LocalisationUpdate;
 
class PHPReader implements Reader {
    protected $code;
 
    public function __construct( $code = null ) {
        $this->code = $code;
    }
 
    public function parse( $contents ) {
        if ( strpos( $contents, '$messages' ) === false ) {
            // This happens for some core languages that only have a fallback.
            return [];
        }
 
        $php = $this->cleanupFile( $contents );
        $reader = new \QuickArrayReader( "<?php $php" );
        $messages = $reader->getVar( 'messages' );
 
        if ( $this->code ) {
            return [ $this->code => $messages ];
        }
 
        // Assuming that the array is keyed by language codes
        return $messages;
    }
 
    protected function cleanupFile( $contents ) {
        // We hate the windows vs linux linebreaks.
        $contents = preg_replace( '/\r\n?/', "\n", $contents );
 
        // We only want message arrays.
        $results = [];
        preg_match_all( '/\$messages(?:.*\s)*?\);/', $contents, $results );
 
        // But we want them all in one string.
        return implode( "\n\n", $results[0] );
    }
}