mergeMessageFileList.php

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<?php
# Start from scratch
define( 'MW_NO_EXTENSION_MESSAGES', 1 );

require_once( __DIR__ . '/Maintenance.php' );
$maintClass = 'MergeMessageFileList';
$mmfl = false;

class MergeMessageFileList extends Maintenance {

        function __construct() {
                parent::__construct();
                $this->addOption( 'list-file', 'A file containing a list of extension setup files, one per line.', true, true );
                $this->addOption( 'extensions-dir', 'Path where extensions can be found.', false, true );
                $this->addOption( 'output', 'Send output to this file (omit for stdout)', false, true );
                $this->mDescription = 'Merge $wgExtensionMessagesFiles from various extensions to produce a ' .
                        'single array containing all message files.';
        }

        public function execute() {
                global $mmfl;

                # Add setup files contained in file passed to --list-file
                $lines = file( $this->getOption( 'list-file' ) );
                if ( $lines === false ) {
                        $this->error( 'Unable to open list file.' );
                }
                $mmfl = array( 'setupFiles' => array_map( 'trim', $lines ) );

                # Now find out files in a directory
                $hasError = false;
                if ( $this->hasOption( 'extensions-dir' ) ) {
                        $extdir = $this->getOption( 'extensions-dir' );
                        $entries = scandir( $extdir );
                        foreach( $entries as $extname ) {
                                if ( $extname == '.' || $extname == '..' || !is_dir( "$extdir/$extname" ) ) {
                                        continue;
                                }
                                $extfile = "{$extdir}/{$extname}/{$extname}.php";
                                if ( file_exists( $extfile ) ) {
                                        $mmfl['setupFiles'][] = $extfile;
                                } else {
                                        $hasError = true;
                                        $this->error( "Extension {$extname} in {$extdir} lacks expected {$extname}.php" );
                                }
                        }
                }

                if ( $hasError ) {
                        $this->error( "Some files are missing (see above). Giving up.", 1 );
                }

                if ( $this->hasOption( 'output' ) ) {
                        $mmfl['output'] = $this->getOption( 'output' );
                }
        }
}

require_once( RUN_MAINTENANCE_IF_MAIN );

foreach ( $mmfl['setupFiles'] as $fileName ) {
        if ( strval( $fileName ) === '' ) {
                continue;
        }
        $fileName = str_replace( '$IP', $IP, $fileName );
        fwrite( STDERR, "Loading data from $fileName\n" );
        include_once( $fileName );
}
fwrite( STDERR, "\n" );
$s =
        "<" . "?php\n" .
        "## This file is generated by mergeMessageFileList.php. Do not edit it directly.\n\n" .
        "if ( defined( 'MW_NO_EXTENSION_MESSAGES' ) ) return;\n\n" .
        '$wgExtensionMessagesFiles = ' . var_export( $wgExtensionMessagesFiles, true ) . ";\n\n";

$dirs = array(
        $IP,
        dirname( __DIR__ ),
        realpath( $IP )
);

foreach ( $dirs as $dir ) {
        $s = preg_replace(
                "/'" . preg_quote( $dir, '/' ) . "([^']*)'/",
                '"$IP\1"',
                $s );
}

if ( isset( $mmfl['output'] ) ) {
        file_put_contents( $mmfl['output'], $s );
} else {
        echo $s;
}