MediaWiki 1.30.2

[autoinstalls/mediawiki.git] / includes / diff / ArrayDiffFormatter.php

<?php
/**
 * Portions taken from phpwiki-1.3.3.
 *
 * Copyright © 2000, 2001 Geoffrey T. Dairiki <dairiki@dairiki.org>
 * You may copy this code freely under the conditions of the GPL.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup DifferenceEngine
 */

/**
 * A pseudo-formatter that just passes along the Diff::$edits array
 * @ingroup DifferenceEngine
 */
class ArrayDiffFormatter extends DiffFormatter {

        /**
         * @param Diff $diff A Diff object.
         *
         * @return array[] List of associative arrays, each describing a difference.
         */
        public function format( $diff ) {
                $oldline = 1;
                $newline = 1;
                $retval = [];
                foreach ( $diff->getEdits() as $edit ) {
                        switch ( $edit->getType() ) {
                                case 'add':
                                        foreach ( $edit->getClosing() as $line ) {
                                                $retval[] = [
                                                        'action' => 'add',
                                                        'new' => $line,
                                                        'newline' => $newline++
                                                ];
                                        }
                                        break;
                                case 'delete':
                                        foreach ( $edit->getOrig() as $line ) {
                                                $retval[] = [
                                                        'action' => 'delete',
                                                        'old' => $line,
                                                        'oldline' => $oldline++,
                                                ];
                                        }
                                        break;
                                case 'change':
                                        foreach ( $edit->getOrig() as $key => $line ) {
                                                $retval[] = [
                                                        'action' => 'change',
                                                        'old' => $line,
                                                        'new' => $edit->getClosing( $key ),
                                                        'oldline' => $oldline++,
                                                        'newline' => $newline++,
                                                ];
                                        }
                                        break;
                                case 'copy':
                                        $oldline += count( $edit->getOrig() );
                                        $newline += count( $edit->getOrig() );
                        }
                }

                return $retval;
        }

}