wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Lib\Formatters;

use DataValues\StringValue;
use InvalidArgumentException;
use ValueFormatters\ValueFormatter;

/**
 * Formats the StringValue from a snak as an Wikitext link.
 *
 * @license GPL-2.0-or-later
 * @author Jonas Kress
 */
class InterWikiLinkWikitextFormatter implements ValueFormatter {

    /**
     * @var string
     */
    private $baseUrl;

    /**
     * @param string $baseUrl Base URL, used to build links to the geo shape storage.
     */
    public function __construct( $baseUrl ) {
        $this->baseUrl = $baseUrl;
    }

    /**
     * @see ValueFormatter::format
     *
     * Formats the given page title as an Wikitext link
     *
     * @param StringValue $value The page title to  be turned into a link
     *
     * @throws InvalidArgumentException
     * @return string Wikitext external link
     */
    public function format( $value ) {
        if ( !( $value instanceof StringValue ) ) {
            throw new InvalidArgumentException( 'Data value type mismatch. Expected a StringValue.' );
        }

        return '[' .
            wfUrlencode( $this->baseUrl . $this->encodeSpaces( $value->getValue() ) ) .
            ' ' .
            wfEscapeWikiText( $value->getValue() ) .
            ']';
    }

    /**
     * @param string $pageName
     *
     * @return string
     */
    private function encodeSpaces( $pageName ) {
        return str_replace( ' ', '_', $pageName );
    }

}