wikimedia/mediawiki-extensions-Translate

<?php
/**
 * Contains a simple string compare class.
 * @license GPL-2.0-or-later
 */

namespace MediaWiki\Extension\Translate\Utilities\StringComparators;

/**
 * A simple string comparator, that compares two strings and determines if they are an exact match.
 * @since 2019.10
 */
class SimpleStringComparator implements StringComparator {
    /** @inheritDoc */
    public function getSimilarity( $addedMessage, $deletedMessage ) {
        if ( $addedMessage === $deletedMessage ) {
            return 1;
        }

        if ( trim( mb_strtolower( $addedMessage ) ) === trim( mb_strtolower( $deletedMessage ) ) ) {
            // This is an arbitrarily chosen number to differentiate it from an exact match.
            return 0.95;
        }

        return 0;
    }
}