countMessages.php

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<?php
require_once( __DIR__ . '/../Maintenance.php' );

class CountMessages extends Maintenance {
        public function __construct() {
                parent::__construct();
                $this->mDescription = "Count how many messages we have defined for each language";
        }

        public function execute() {
                global $IP;
                $dir = $this->getArg( 0, "$IP/languages/messages" );
                $total = 0;
                $nonZero = 0;
                foreach ( glob( "$dir/*.php" ) as $file ) {
                        $baseName = basename( $file );
                        if ( !preg_match( '/Messages([A-Z][a-z_]+)\.php$/', $baseName, $m ) ) {
                                continue;
                        }

                        $numMessages = $this->getNumMessages( $file );
                        // print "$code: $numMessages\n";
                        $total += $numMessages;
                        if ( $numMessages > 0 ) {
                                $nonZero ++;
                        }
                }
                $this->output( "\nTotal: $total\n" );
                $this->output( "Languages: $nonZero\n" );
        }

        private function getNumMessages( $file ) {
                // Separate function to limit scope
                require( $file );
                if ( isset( $messages ) ) {
                        return count( $messages );
                } else {
                        return 0;
                }
        }
}

$maintClass = "CountMessages";
require_once( RUN_MAINTENANCE_IF_MAIN );