Просмотр архива Contao (бывшая TYPOlight)


<?php
/**
 * Side by Side HTML diff generator for PHP DiffLib.
 *
 * PHP version 5
 *
 * Copyright (c) 2009 Chris Boulton <chris.boulton@interspire.com>
 * 
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the Chris Boulton nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @package DiffLib
 * @author Chris Boulton <chris.boulton@interspire.com>
 * @copyright (c) 2009 Chris Boulton
 * @license New BSD License http://www.opensource.org/licenses/bsd-license.php
 * @version 1.1
 * @link http://github.com/chrisboulton/php-diff
 */

require_once dirname(__FILE__).'/Array.php';

class Diff_Renderer_Html_SideBySide extends Diff_Renderer_Html_Array
{
    /**
     * Render a and return diff with changes between the two sequences
     * displayed side by side.
     *
     * @return string The generated side by side diff.
     */
    public function render()
    {
        $changes = parent::render();

        $html = '';
        if(empty($changes)) {
            return $html;
        }

        $html .= '<table class="Differences DifferencesSideBySide">';
        $html .= '<thead>';
        $html .= '<tr>';
        $html .= '<th colspan="2">Old Version</th>';
        $html .= '<th colspan="2">New Version</th>';
        $html .= '</tr>';
        $html .= '</thead>';
        foreach($changes as $i => $blocks) {
            if($i > 0) {
                $html .= '<tbody class="Skipped">';
                $html .= '<th>&hellip;</th><td>&nbsp;</td>';
                $html .= '<th>&hellip;</th><td>&nbsp;</td>';
                $html .= '</tbody>';
            }

            foreach($blocks as $change) {
                $html .= '<tbody class="Change'.ucfirst($change['tag']).'">';
                // Equal changes should be shown on both sides of the diff
                if($change['tag'] == 'equal') {
                    foreach($change['base']['lines'] as $no => $line) {
                        $fromLine = $change['base']['offset'] + $no + 1;
                        $toLine = $change['changed']['offset'] + $no + 1;
                        $html .= '<tr>';
                        $html .= '<th>'.$fromLine.'</th>';
                        $html .= '<td class="Left"><span>'.$line.'</span>&nbsp;</span></td>';
                        $html .= '<th>'.$toLine.'</th>';
                        $html .= '<td class="Right"><span>'.$line.'</span>&nbsp;</span></td>';
                        $html .= '</tr>';
                    }
                }
                // Added lines only on the right side
                else if($change['tag'] == 'insert') {
                    foreach($change['changed']['lines'] as $no => $line) {
                        $toLine = $change['changed']['offset'] + $no + 1;
                        $html .= '<tr>';
                        $html .= '<th>&nbsp;</th>';
                        $html .= '<td class="Left">&nbsp;</td>';
                        $html .= '<th>'.$toLine.'</th>';
                        $html .= '<td class="Right"><ins>'.$line.'</ins>&nbsp;</td>';
                        $html .= '</tr>';
                    }
                }
                // Show deleted lines only on the left side
                else if($change['tag'] == 'delete') {
                    foreach($change['base']['lines'] as $no => $line) {
                        $fromLine = $change['base']['offset'] + $no + 1;
                        $html .= '<tr>';
                        $html .= '<th>'.$fromLine.'</th>';
                        $html .= '<td class="Left"><del>'.$line.'</del>&nbsp;</td>';
                        $html .= '<th>&nbsp;</th>';
                        $html .= '<td class="Right">&nbsp;</td>';
                        $html .= '</tr>';
                    }
                }
                // Show modified lines on both sides
                else if($change['tag'] == 'replace') {
                    if(count($change['base']['lines']) >= count($change['changed']['lines'])) {
                        foreach($change['base']['lines'] as $no => $line) {
                            $fromLine = $change['base']['offset'] + $no + 1;
                            $html .= '<tr>';
                            $html .= '<th>'.$fromLine.'</th>';
                            $html .= '<td class="Left"><span>'.$line.'</span>&nbsp;</td>';
                            if(!isset($change['changed']['lines'][$no])) {
                                $toLine = '&nbsp;';
                                $changedLine = '&nbsp;';
                            }
                            else {
                                $toLine = $change['base']['offset'] + $no + 1;
                                $changedLine = '<span>'.$change['changed']['lines'][$no].'</span>';
                            }
                            $html .= '<th>'.$toLine.'</th>';
                            $html .= '<td class="Right">'.$changedLine.'</td>';
                            $html .= '</tr>';
                        }
                    }
                    else {
                        foreach($change['changed']['lines'] as $no => $changedLine) {
                            if(!isset($change['base']['lines'][$no])) {
                                $fromLine = '&nbsp;';
                                $line = '&nbsp;';
                            }
                            else {
                                $fromLine = $change['base']['offset'] + $no + 1;
                                $line = '<span>'.$change['base']['lines'][$no].'</span>';
                            }
                            $html .= '<tr>';
                            $html .= '<th>'.$fromLine.'</th>';
                            $html .= '<td class="Left"><span>'.$line.'</span>&nbsp;</td>';
                            $toLine = $change['changed']['offset'] + $no + 1;
                            $html .= '<th>'.$toLine.'</th>';
                            $html .= '<td class="Right">'.$changedLine.'</td>';
                            $html .= '</tr>';
                        }
                    }
                }
                $html .= '</tbody>';
            }
        }
        $html .= '</table>';
        return $html;
    }
}