MediaWikiMessageGroup.php

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<?php
class MediaWikiMessageGroup extends FileBasedMessageGroup {
    public function mapCode( $code ) {
        return ucfirst( str_replace( '-', '_', parent::mapCode( $code ) ) );
    }

    public function getTags( $type = null ) {
        $path = $this->getFromConf( 'BASIC', 'metadataPath' );

        if ( $path === null ) {
            throw new MWException( "metadataPath is not configured." );
        }

        $filename = "$path/messageTypes.inc";

        if ( !is_readable( $filename ) ) {
            throw new MWException( "$filename is not readable." );
        }

        $data = file_get_contents( $filename );

        if ( $data === false ) {
            throw new MWException( "Failed to read $filename." );
        }

        $reader = new ConfEditor( $data );
        $vars = $reader->getVars();

        $tags = array();
        $tags['optional'] = $vars['wgOptionalMessages'];
        $tags['ignored'] = $vars['wgIgnoredMessages'];

        if ( !$type ) {
            return $tags;
        }

        if ( isset( $tags[$type] ) ) {
            return $tags[$type];
        }

        return array();
    }
}