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 {
    protected $hasError;

    function __construct() {
        parent::__construct();
        $this->addOption( 'list-file', 'A file containing a list of extension setup files, one per line.', false, 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, $wgExtensionEntryPointListFiles;

        if ( !count( $wgExtensionEntryPointListFiles )
            && !$this->hasOption( 'list-file' )
            && !$this->hasOption( 'extensions-dir' )
        ) {
            $this->error( "Either --list-file or --extensions-dir must be provided if " .
                "\$wgExtensionEntryPointListFiles is not set", 1 );
        }

        $mmfl = array( 'setupFiles' => array() );

        # Add setup files contained in file passed to --list-file
        if ( $this->hasOption( 'list-file' ) ) {
            $extensionPaths = $this->readFile( $this->getOption( 'list-file' ) );
            $mmfl['setupFiles'] = array_merge( $mmfl['setupFiles'], $extensionPaths );
        }

        # Now find out files in a directory
        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 {
                    $this->hasError = true;
                    $this->error( "Extension {$extname} in {$extdir} lacks expected {$extname}.php" );
                }
            }
        }

        # Add setup files defined via configuration
        foreach ( $wgExtensionEntryPointListFiles as $points ) {
            $extensionPaths = $this->readFile( $points );
            $mmfl['setupFiles'] = array_merge( $mmfl['setupFiles'], $extensionPaths );
        }

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

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

    private function readFile( $fileName ) {
        global $IP;

        $files = array();
        $fileLines = file( $fileName );
        if ( $fileLines === false ) {
            $this->hasError = true;
            $this->error( "Unable to open list file $fileName." );
            return $files;
        }
        # Strip comments, discard empty lines, and trim leading and trailing
        # whitespace. Comments start with '#' and extend to the end of the line.
        foreach ( $fileLines as $extension ) {
            $extension = trim( preg_replace( '/#.*/', '', $extension ) );
            if ( $extension !== '' ) {
                # Paths may use the string $IP to be substituted by the actual value
                $extension = str_replace( '$IP', $IP, $extension );
                if ( file_exists( $extension ) ) {
                    $files[] = $extension;
                } else {
                    $this->hasError = true;
                    $this->error( "Extension {$extension} doesn't exist" );
                }
            }
        }
        return $files;
    }
}

require_once RUN_MAINTENANCE_IF_MAIN;

foreach ( $mmfl['setupFiles'] as $fileName ) {
    if ( strval( $fileName ) === '' ) {
        continue;
    }
    if ( empty( $mmfl['quiet'] ) ) {
        fwrite( STDERR, "Loading data from $fileName\n" );
    }
    // Include the extension to update $wgExtensionMessagesFiles
    if ( !( include_once( $fileName ) ) ) {
        fwrite( STDERR, "Unable to read $fileName\n" );
        exit( 1 );
    }
}
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;
}