fallbacks-graph.php

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<?php
use MediaWiki\Languages\LanguageFallback;
use MediaWiki\Maintenance\Maintenance;
use MediaWiki\MediaWikiServices;
use MediaWiki\Xml\Xml;
 
// Standard boilerplate to define $IP
if ( getenv( 'MW_INSTALL_PATH' ) !== false ) {
    $IP = getenv( 'MW_INSTALL_PATH' );
} else {
    $dir = __DIR__;
    $IP = "$dir/../../..";
}
require_once "$IP/maintenance/Maintenance.php";
 
class FallbacksCompare extends Maintenance {
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Creates graphml xml file of language fallbacks.' );
    }
 
    public function execute() {
        $template =
            <<<'XML'
            <?xml version="1.0" encoding="UTF-8"?>
            <graphml
                xmlns="http://graphml.graphdrawing.org/xmlns"
                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
                    http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd"
                xmlns:y="http://www.yworks.com/xml/graphml">
 
                <key id="code" for="node" yfiles.type="nodegraphics"/>
                <graph id="G" edgedefault="directed">
            $1
                </graph>
            </graphml>
 
            XML;
 
        $services = MediaWikiServices::getInstance();
        $langs = $services
            ->getLanguageNameUtils()
            ->getLanguageNames();
        $languageFallback = $services->getLanguageFallback();
        $nodes = $edges = [];
        foreach ( $langs as $code => $name ) {
            $fallbacks = $languageFallback->getAll( $code, LanguageFallback::STRICT );
            if ( $fallbacks === [] ) {
                continue;
            }
 
            $nodes[$code] = $this->createNode( $code );
 
            $prev = $code;
            foreach ( $fallbacks as $fb ) {
                $nodes[$fb] = $this->createNode( $fb );
                $edges[$fb . $prev] = Xml::element( 'edge', [ 'source' => $prev, 'target' => $fb ] );
                $prev = $fb;
            }
        }
 
        $output = array_merge( $nodes, $edges );
        $output = "\t\t" . implode( "\n\t\t", $output );
        echo str_replace( '$1', $output, $template );
    }
 
    protected function createNode( $code ) {
        return Xml::openElement( 'node', [ 'id' => $code ] )
            . Xml::openElement( 'data', [ 'key' => 'code' ] )
            . Xml::openElement( 'y:Shapenode' )
            . Xml::element(
                'y:Geometry',
                [ 'height' => 40, 'width' => max( 40, 20 * strlen( $code ) ) ],
                ''
            )
            . Xml::element( 'y:NodeLabel', [ 'fontSize' => '24' ], $code )
            . Xml::element( 'y:BorderStyle', [ 'hasColor' => 'false' ], '' )
            . Xml::element( 'y:Fill', [ 'hasColor' => 'false' ], '' )
            . Xml::closeElement( 'y:Shapenode' )
            . Xml::closeElement( 'data' )
            . Xml::closeElement( 'node' );
    }
}
 
$maintClass = FallbacksCompare::class;
require_once RUN_MAINTENANCE_IF_MAIN;